CN110856328B

CN110856328B - A closed-loop static electricity monitoring and elimination system

Info

Publication number: CN110856328B
Application number: CN201911002737.6A
Authority: CN
Inventors: 孙卫星; 杨庆瑞; 罗先军; 李鹏
Original assignee: SHANGHAI ANPING STATIC TECHNOLOGY CO LTD
Current assignee: SHANGHAI ANPING STATIC TECHNOLOGY CO LTD
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2025-03-14
Anticipated expiration: 2039-10-21
Also published as: CN110856328A

Abstract

A closed-loop static electricity monitoring and elimination system belongs to the field of static electricity elimination. Along the running route of the product to be eliminated, above the guide rail, a first static electricity monitoring device, a first static electricity elimination device, a second static electricity monitoring device, a second static electricity elimination device and a third static electricity monitoring device are sequentially arranged; the first static electricity monitoring device monitors the initial static electricity voltage of the product to be eliminated; the first static electricity elimination device performs the first static electricity elimination on the product to be eliminated; the second static electricity monitoring device monitors the residual static electricity voltage of the product to be eliminated; the second static electricity elimination device performs the second static electricity elimination on the product to be eliminated; the third static electricity monitoring device monitors the residual static electricity voltage of the product to be eliminated. By setting an static electricity monitoring device at the front and rear positions of each static electricity elimination device, a closed-loop feedback mode is adopted to automatically perform static electricity monitoring and static electricity elimination functions on the product to be eliminated; the static electricity elimination ability of the static electricity elimination device can also be monitored or evaluated.

Description

Closed-loop type static monitoring and eliminating system

Technical Field

The invention belongs to the field of static electricity elimination, and particularly relates to an active static electricity elimination system.

Background

With the continuous improvement of the electrostatic protection requirements of the production line, online electrostatic monitoring and immediate elimination of products become more and more standard requirements.

For example, in a production line of liquid crystal panels, there are cases where the same (same structural size) liquid crystal panel flows through various process operation devices, and in order to timely eliminate static electricity of the liquid crystal panel on the production line, it is necessary to perform online static electricity monitoring and timely elimination of the product.

There are many brands of static electricity monitoring instruments on the market, such as handheld static voltage monitoring meters, static electricity sensors, etc., but the static electricity monitoring instruments can be used for monitoring and feeding back the static electricity on the surface of an object, and meanwhile, the static electricity eliminating instruments are also used for eliminating static electricity on the surface of the object, such as various types of ion fans, ion bars, etc.

At present, networking technology of a computer local area network is mature, various industrial computers, wireless communication modules, smart phones and the like have network connection capability, and various wired or wireless local area network networks can be conveniently built by setting different IP addresses for various devices.

However, between the existing apparatus for electrostatic monitoring and the apparatus for eliminating static electricity on the surface of an object, connection or transmission of the monitoring signal must be performed through a dedicated signal transmission line (typically, a dedicated coaxial shielding signal line) configured by a manufacturer. The system has no universal connection mode which is convenient for network connection and unified and standard data exchange mode, is very difficult to establish an electrostatic monitoring signal transmission system or an electrostatic monitoring-electrostatic eliminating system on a production site, has various signal lines on the site, has huge workload for laying control cables and has large one-time investment cost.

Meanwhile, based on the difference of manufacturing process or monitoring method, the comparison of the monitoring effect of the existing two static monitoring instruments or the static eliminating effect of static eliminating equipment on the surface of two objects can be usually performed only by equipment manufacturers, and the static eliminating equipment cannot be performed on production sites, which brings great inconvenience to the using units of the static eliminating devices, and the monitoring effect or eliminating effect of the static eliminating devices on site cannot be monitored or compared for users, and is inconvenient for the using units to judge whether the functions of the installed static monitoring devices or static eliminating devices are partially lost or reduced in capability on production sites.

Disclosure of Invention

The invention aims to provide a closed-loop type electrostatic monitoring and eliminating system. The static electricity eliminating device comprises a static electricity eliminating device, a static electricity monitoring device, a closed loop feedback mode, a static electricity sensing device, a static electricity eliminating device, a plurality of static electricity monitoring devices and a plurality of static electricity monitoring device judgment devices, wherein the static electricity eliminating device is provided with independent IP addresses for each static electricity monitoring device or the static electricity eliminating device, the corresponding relation is established between the static electricity monitoring devices and the static electricity eliminating device through the IP addresses, the static electricity monitoring devices are respectively arranged at the front position and the rear position of the static electricity eliminating device, the linkage control is implemented by one static electricity sensing device and one static electricity eliminating device in a one-to-one correspondence mode, the static electricity monitoring and the static electricity eliminating function of a product object to be eliminated can be automatically carried out, the static electricity eliminating capability of the static electricity eliminating device can be monitored or judged, the static electricity eliminating device is arranged at different vertical distances, the static electricity monitoring devices are arranged, the actual measurement values of the static electricity monitoring devices on the same object are judged and the static electricity monitoring accuracy of the static electricity monitoring devices under the same static electricity pressure under the same static electricity eliminating condition under a plurality of different monitoring distances is judged.

The invention provides a closed-loop electrostatic monitoring and eliminating system, which comprises an electrostatic eliminating device, an electrostatic monitoring device and a movable product object to be eliminated, wherein the product object to be eliminated is positioned on a guide rail, and is characterized in that:

A first static electricity monitoring device, a first static electricity eliminating device, a second static electricity monitoring device, a second static electricity eliminating device and a third static electricity monitoring device are sequentially arranged above the guide rail along the running route and the running direction of the product object to be eliminated on the guide rail;

the first static monitoring device is used for monitoring the initial static voltage of a product object to be eliminated;

The first static electricity eliminating device is used for eliminating static electricity of a product object to be eliminated for the first time;

The second static monitoring device is used for monitoring the residual static voltage of the product object to be eliminated;

the second static electricity eliminating device is used for eliminating static electricity again for the product object to be eliminated;

the third static monitoring device is used for monitoring the residual static voltage of the product object to be eliminated;

the first static electricity monitoring device and the first static electricity eliminating device are arranged in an associated mode to realize linkage control;

When a product object to be eliminated moves along the guide rail, sequentially passing through the first electrostatic monitoring device to the third electrostatic monitoring device, controlling the first electrostatic eliminating device to output first electrostatic eliminating capacity corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product object to be eliminated, and eliminating the first electrostatic of the product object to be eliminated by the first electrostatic eliminating device;

Then the second static electricity monitoring device monitors the residual static voltage of the product object to be eliminated after the primary static electricity elimination, and if the residual static voltage of the product object to be eliminated is lower than a preset threshold value, the second static electricity eliminating device stands by; if the residual static voltage of the product object to be eliminated is higher than the preset threshold value, the second static electricity monitoring device controls the second static electricity eliminating device to output static electricity eliminating capacity corresponding to the residual static voltage value according to the residual static voltage of the product object to be eliminated, and the second static electricity eliminating device eliminates the static electricity of the product object to be eliminated again;

and finally, the third static monitoring device monitors whether the residual static voltage of the product object to be eliminated meets the process specification requirement, if the residual static voltage meets the specification, the process is released, and if the residual static voltage exceeds the specification, an alarm signal is output.

Further, the first, second and third static electricity monitoring devices, the first and second static electricity eliminating devices are respectively provided with independent IP addresses, and the first, second and third static electricity monitoring devices, the first and second static electricity eliminating devices are respectively connected with the control computer in a communication way through a wired or wireless local area network.

Specifically, the input ends of the first, second and third electrostatic monitoring devices are respectively and electrically connected with the output end of the integrated power supply and are in communication connection with the control computer through a communication module in the integrated power supply; and the power input ends of the first and second static elimination devices are respectively and correspondingly connected with the power output ends of the integrated power supply.

The closed-loop type static electricity monitoring and eliminating system adopts a closed-loop feedback mode, and one static electricity sensing device and one static electricity eliminating device are in one-to-one correspondence to implement linkage control, so that static electricity monitoring and eliminating functions are automatically carried out on a product object to be eliminated.

The closed-loop type static electricity monitoring and eliminating system provided by the invention is characterized in that the static electricity to-be-eliminated product object is subjected to static electricity monitoring at least twice, the next static electricity eliminating capacity is controlled according to the result of each static electricity monitoring, and the static electricity to-be-eliminated product object is automatically subjected to multiple static electricity elimination.

The invention also provides a static electricity monitoring and eliminating system demonstration device which adopts the closed-loop static electricity monitoring and eliminating system principle to work, and is characterized in that:

The static monitoring and eliminating system demonstration device is further provided with a fourth static sensing device, a fifth static sensing device, a test panel capable of controlled movement along the guide rail, a high-voltage direct-current power supply, a guide rail PLC controller and an integrated power supply;

The fourth electrostatic sensing device, the fifth electrostatic sensing device or the integrated power supply are respectively provided with independent IP addresses and are respectively connected with the control computer through a wired or wireless local area network;

The control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working conditions of each electrostatic sensing device and each electrostatic eliminating device;

The vertical mounting heights of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test plate are unequal, so that the monitoring accuracy of the plurality of electrostatic sensors under the same electrostatic voltage or the consistency of the electrostatic voltage is verified under the premise that the electrostatic voltage values of the surfaces of the target objects are the same and different monitoring distances;

The test panel is used for bearing a product object to be eliminated, and can reciprocate along the guide rail, stay at a certain position of the guide rail or stay at a certain preset position for preset time under the control of the guide rail PLC;

The high-voltage direct-current power supply is used for applying initial static voltage to a product object to be eliminated, which moves to the head end or the tail end of the guide rail, wherein the initial static voltage comprises positive voltage or negative voltage;

The guide rail PLC controller is used for controlling the movement speed or the movement range of the test flat plate on the guide rail, so that the test flat plate can move to a certain set position, and after the test flat plate is stationary for a preset time at the set position, the test flat plate continues to move to other set positions;

The integrated power supply is used for supplying power to each electrostatic sensing device and each electrostatic eliminating device, and simultaneously, the working states and working parameters of each device are transmitted to system monitoring software in the control computer in real time through a wired or wireless network.

Specifically, the vertical installation height of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test panel is unequal to the vertical installation height of the first electrostatic sensing device to the third electrostatic sensing device from the test panel.

The closed-loop electrostatic monitoring and eliminating system operates in the following manner:

a) The head and tail ends of the guide rail are respectively provided with a positive high-voltage conductive plug and a negative high-voltage conductive plug, the positive high-voltage conductive plug and the negative high-voltage conductive plug are respectively and correspondingly connected with the positive high-voltage output end and the negative high-voltage output end of the high-voltage direct-current power supply and are used for respectively applying positive and negative voltages to the test flat plate moving to the head and tail end positions of the guide rail;

b) Respectively setting a plurality of preset positions along the length direction of the guide rail, respectively setting two sets of static electricity eliminating devices above two preset positions, and respectively setting one static electricity monitoring device above the front preset position and the rear preset position of each set of static electricity eliminating device;

c) Respectively arranging an electrostatic monitoring device above at least two adjacent preset positions along the length direction of the guide rail, wherein the vertical installation heights of the two electrostatic monitoring devices from the test panel are unequal;

d) Establishing corresponding association relation between each static electricity monitoring device and each static electricity eliminating device in system monitoring software through IP addresses, and establishing corresponding control association relation between the static electricity monitoring devices positioned at the front and rear positions of each static electricity eliminating device and the corresponding static electricity eliminating devices, wherein the control association relation at least comprises static electricity monitoring output signals of the static electricity monitoring devices positioned at the front positions of each static electricity eliminating device along the moving direction of a test flat plate, and is used for controlling the operation start control of the static electricity eliminating devices positioned at the rear positions of the static electricity monitoring devices;

e) When the system monitoring software is initially operated, the test panel is positioned at a first position of the head end of the guide rail, and the test panel is electrically contacted with a positive high-voltage output end of a high-voltage direct-current power supply, so that the test panel is positively charged;

the head-end electrostatic sensor is positioned at a first position of the head end of the guide rail, monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic sensor on monitoring software;

f) The guide rail PLC controller controls the test panel to move, sequentially passes through the second position, the third position and the fourth position, and each electrostatic sensing device arranged at the positions respectively monitors the electrostatic voltage on the test panel at the corresponding position and transmits a monitoring signal to the industrial touch screen computer, and if the electrostatic voltage monitored by the electrostatic sensor at a certain position exceeds a set alarm threshold value, the corresponding electrostatic sensor outputs a red alarm signal;

g) When the test panel moves to the fourth position, the corresponding electrostatic sensing device monitors the electrostatic voltage exceeding the threshold value and transmits an alarm signal to the industrial touch screen computer, and linkage control exists between the electrostatic sensing device and the first electrostatic eliminating device, so that the industrial touch screen computer starts the first electrostatic eliminating device to work to eliminate electrostatic charge on the test panel;

h) When the test flat plate moves to the sixth position, the static electricity on the test flat plate is eliminated by the first static electricity eliminating device, so that the static electricity sensing device corresponding to the position cannot monitor that the static electricity or the static voltage value on the flat plate is lower than a set static electricity threshold value;

i) When the test flat plate moves to the eighth position, the test flat plate is electrically contacted with the negative high-voltage output end of the high-voltage direct-current power supply to enable the test flat plate to be provided with negative static electricity, and the static electricity sensing device corresponding to the position monitors that the test flat plate is provided with the negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to an industrial touch screen computer, and the test flat plate returns under the control of the guide rail PLC controller;

j) When the test flat plate with negative static electricity returns to the seventh position, the corresponding static electricity sensing device monitors that the static voltage exceeds the threshold value in the previous position and transmits an alarm signal to the industrial touch screen computer, and the static electricity sensing device 6 and the second static electricity eliminating device are in linkage control, so that the monitoring system starts the second static electricity eliminating device to work, and negative charges on the test flat plate are eliminated.

K) When the test flat plate is powered off by the ion fan, the test flat plate moves to a sixth position, and the corresponding electrostatic sensing device monitors that negative charges on the test flat plate are eliminated;

l) subsequently, the test panel passes through the fifth, fourth, third and second positions in sequence and after a set time of residence at each position, returns to the initial first position.

Further, the static monitoring and eliminating system demonstration device monitors the static pressure of the test flat plate by arranging at least two static monitoring devices with unequal vertical installation heights from the test flat plate on the moving path of the test flat plate, and judges and verifies the monitoring accuracy of the static monitoring devices under the same static pressure under a plurality of different monitoring distances by comparing the measured values of the static monitoring devices;

The static electricity monitoring and eliminating system demonstration device is characterized in that at least two sets of static electricity eliminating devices are arranged on the moving path of the test panel, and the static electricity eliminating performance of various static electricity eliminating devices or sets of static electricity eliminating devices is judged and verified by comparing the respective static electricity eliminating effects;

The static monitoring and eliminating system demonstration device is used as a static monitoring and eliminating demonstration device and plays a role in technical demonstration.

Specifically, the test flat plate comprises an upper square stainless steel metal flat plate and a lower square stainless steel metal flat plate which have the same structural dimensions, the lower flat plate is fixedly arranged on a sliding platform of a guide rail, and the upper flat plate and the lower flat plate are isolated and supported and fixed by polytetrafluoroethylene cylinders;

The bottom of the upper flat plate is provided with a front end and a rear end at the central line position in the movement direction of the test flat plate, and each of the front end and the rear end is fixed with a conductive end which is of a hollow columnar structure and is used for contacting positive and negative high-voltage conductive plugs arranged at the head end and the tail end of a guide rail;

The positive and negative high-voltage conductive plugs are respectively arranged at the head and tail ends of the guide rail and are respectively and correspondingly and electrically connected with the positive and negative high-voltage output ends of the high-voltage direct-current power supply.

Compared with the prior art, the invention has the advantages that:

1. Each static monitoring device or each static eliminating device is provided with an independent IP address, and corresponding relations are established for the static monitoring devices and the static eliminating devices through the IP addresses, so that each system component has networking capability, a static monitoring and eliminating system capable of meeting the demands of customers is conveniently constructed on a production site in a local area network building mode, and the system is good in expandability;

2. The static electricity eliminating device can monitor or judge the static electricity eliminating capability of the static electricity eliminating device, thereby enhancing the self-judging capability and static electricity eliminating effect of the whole static electricity monitoring and eliminating system, helping users to judge or judge whether the functions of all the monitoring and static electricity eliminating components are normal or not by themselves, reducing the work load of field service of manufacturers and shortening the time or period of solving problems and processing faults on site;

3. the static monitoring devices are arranged at different vertical distances, actual measurement values of the static monitoring devices on the same charged object are compared to judge and verify the monitoring accuracy of the static monitoring devices under the same static voltage at a plurality of different monitoring distances, and the performance of the static monitoring devices is compared and judged;

4. The method adopts a logic control mode of multiple static electricity monitoring and multiple static electricity elimination, monitors the static voltage of the product object to be eliminated after eliminating electricity, automatically determines whether the static electricity elimination needs to be carried out again according to the result of each static electricity monitoring, automatically controls the capacity of the next static electricity elimination, eliminates the static electricity of the product object to be eliminated for multiple times, and realizes intelligent automatic monitoring and static electricity elimination in the true sense.

Drawings

FIG. 1 is a schematic diagram of the basic structure of a closed loop electrostatic monitoring and elimination system of the present invention;

FIG. 2 is a schematic diagram of the electrical principle of the closed loop electrostatic monitoring and elimination system of the present invention;

FIG. 3 is a schematic diagram of a mechanical layout of a first embodiment of the present invention;

FIG. 4 is a schematic diagram of a mechanical layout of a second embodiment of the present invention;

FIG. 5 is a schematic diagram of the relative positions of the conductive terminals and positive and negative high voltage conductive plugs;

FIG. 6a is a schematic diagram of the logic control flow of an ion bar according to the first embodiment;

FIG. 6b is a schematic diagram of the logic control flow of an ion blower in the first embodiment;

FIG. 7a is a schematic diagram of the logic control flow of an ion bar in a second embodiment;

FIG. 7b is a schematic diagram of a logic control flow of an ion blower in a second embodiment;

FIG. 8a is a schematic diagram of the logic control flow of an ion bar in a third embodiment;

fig. 8b is a schematic diagram of a logic control flow of an ion blower in the third embodiment.

In the figure, 1 is a guide rail, 1a is the head end of the guide rail, 1b is the tail end of the guide rail, 1c is a guide rail sliding platform, 2 is a test plate, 2a and 2b are conductive ends, 3 is a first static electricity monitoring device, 4 is a first static electricity eliminating device, 5 is a second static electricity monitoring device, 6 is a second static electricity eliminating device, 7 is a third static electricity monitoring device, 8 is a control computer, 9 is a centralized power supply, 10 is a high-voltage direct-current power supply, and 11 is a guide rail PLC controller;

① Position 1, ② is position 2,.. ⑧ is position 8, ⑨ is position 9;

CGQn is an electrostatic sensor (n is a natural number, hereinafter the same) with number n, XCQn is an electrostatic eliminator (n is a natural number) with number n, +HV is a positive high voltage conductive plug, and-HV is a negative high voltage conductive plug.

Detailed Description

The invention is further described below with reference to the drawings and examples.

In fig. 1, the technical solution of the present invention provides a closed-loop electrostatic monitoring and eliminating system, which includes an electrostatic eliminating device, an electrostatic monitoring device, and a movable product object to be eliminated (or referred to as a test plate, denoted by reference numeral 2 in fig. 1, and the following is the following) located on a guide rail, where the invention is as follows:

Along the running route and the running direction of the product object to be eliminated on the guide rail 1, a first static electricity monitoring device 3, a first static electricity eliminating device 4, a second static electricity monitoring device 5, a second static electricity eliminating device 6 and a third static electricity monitoring device 7 are sequentially arranged above the guide rail;

The first static monitoring device is used for monitoring the initial static voltage of the product object 2 to be eliminated;

The third static monitoring device is used for monitoring the residual static voltage of the product object to be eliminated.

The first static electricity monitoring device and the first static electricity eliminating device are arranged in an associated mode, and linkage control is achieved;

The linkage control is that the signal output end of the first static electricity monitoring device is correspondingly connected with the control signal input end of the first static electricity eliminating device, so that the first static electricity monitoring device can control the starting of the first static electricity eliminating device or can control the starting of the first static electricity eliminating device and the static electricity eliminating capacity output by the first static electricity eliminating device.

Similarly, the second static electricity monitoring device and the second static electricity eliminating device are arranged in an associated mode, and linkage control is achieved;

When the product object to be eliminated (represented by the test panel 2 in the figure) moves along the guide rail (an example of right-to-left movement is given in the figure), the product object to be eliminated sequentially passes through the first electrostatic monitoring device to the third electrostatic monitoring device, and the first electrostatic monitoring device controls the first electrostatic eliminating device to output the first electrostatic eliminating capability corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product object to be eliminated, and the first electrostatic eliminating device eliminates the first electrostatic of the product object to be eliminated.

And if the residual static voltage of the product object to be eliminated is higher than the preset threshold value, the second static monitoring device controls the second static eliminating device to output static eliminating capacity corresponding to the residual static voltage value according to the residual static voltage of the product object to be eliminated, and the second static eliminating device eliminates the static electricity again.

And finally, the third static monitoring device monitors whether the residual static voltage of the product object to be eliminated meets the process specification requirement, if the residual static voltage meets the specification, the process is released, if the residual static voltage exceeds the specification, an alarm signal is output, and an audible and visual alarm device sends out an audible or visual alarm.

Further, the first, second and third static electricity monitoring devices are respectively provided with independent IP addresses, and the first, second and third static electricity monitoring devices are respectively connected with the control computer through a wired or wireless local area network.

Further, the electrostatic monitoring device is an electrostatic monitoring head and/or an electrostatic sensor, and the first electrostatic eliminating device and the second electrostatic eliminating device can be an ion rod and/or an ion blower.

In fig. 2, the signal output ends of the first, second and third electrostatic monitoring devices 3, 5 and 7 are respectively connected with a control computer 8;

The power input ends of the first and second static eliminating devices 4 and 6 are respectively and correspondingly connected with the power output ends of the integrated power supply.

By the arrangement of the module structure, two independent closed-loop feedback units are formed between the first static electricity monitoring device and the first static electricity eliminating device and between the second static electricity monitoring device and the second static electricity eliminating device, and the two closed-loop feedback units form a complete closed-loop feedback system and a working mode from the whole system.

According to the closed-loop type static electricity monitoring and eliminating system disclosed by the technical scheme of the invention, a closed-loop feedback mode is adopted, one static electricity sensing device and one static electricity eliminating device are in one-to-one correspondence to implement linkage control, and the static electricity monitoring and eliminating function is automatically carried out on a product object to be eliminated.

According to the closed-loop type static electricity monitoring and eliminating system, the product object to be eliminated is subjected to static electricity monitoring at least twice, the next static electricity eliminating capacity is controlled according to the result of each static electricity monitoring, and multiple static electricity elimination is automatically carried out on the product object to be eliminated.

In fig. 3, in order to meet the above needs, the technical solution of the present invention further provides a static electricity monitoring and eliminating system demonstration device that works by adopting the principle of the closed-loop static electricity monitoring and eliminating system, and the invention is characterized in that:

Based on the hardware structure and the working mode of the closed-loop electrostatic monitoring and eliminating system, the electrostatic monitoring and eliminating system demonstration device is further provided with a fourth electrostatic sensing device (marked by CGQ2 in the figure), a fifth electrostatic sensing device (marked by CGQ3 in the figure), a test flat plate 2 (namely the object to be eliminated) capable of controlled movement along the guide rail 1, a high-voltage direct-current power supply 10, a guide rail PLC (programmable logic controller) 11 and an integrated power supply 9.

The fourth electrostatic sensing device, the fifth electrostatic sensing device or the integrated power supply are respectively provided with independent IP addresses, and are respectively connected with the control computer 8 through a wired or wireless local area network.

The control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working state of each electrostatic sensing device and each electrostatic eliminating device.

The vertical installation heights of the fourth electrostatic sensing device and the fifth electrostatic sensing device from the test panel are unequal, so that the monitoring accuracy of the plurality of electrostatic sensors under the same electrostatic voltage or the consistency of the electrostatic voltage is verified under the premise that the electrostatic voltage values of the surfaces of the target objects are the same and different monitoring distances.

The test panel 2 is located on a guide rail sliding platform 1c capable of moving along the guide rail, and is used for bearing the object of the product to be eliminated, and the test panel can reciprocate along the guide rail, stay at a certain position of the guide rail or stay at a certain preset position for a preset time under the control of the guide rail PLC 11.

The high-voltage direct-current power supply is used for applying initial static voltage to the to-be-eliminated product object moving to the head end or the tail end of the guide rail, wherein the initial static voltage comprises positive voltage or negative voltage.

The guide rail PLC controller is used for controlling the movement speed or the movement range of the test flat plate on the guide rail, so that the test flat plate can move to a certain set position, and after the test flat plate is stationary for a preset time at the set position, the test flat plate can continue to move to other set positions.

The integrated power supply is used for supplying power to each electrostatic sensing device and each electrostatic eliminating device, and simultaneously, the working state and the working parameters of each device are transmitted to system monitoring software in the control computer in real time through a wired or wireless network.

Regarding the problem of monitoring the same static voltage value of the surface of an object by the electrostatic sensor under different monitoring distances in the technical scheme, the following is further described:

1. The same charged target object is monitored by the electrostatic sensor of the same model under different monitoring distances, and the accuracy of the sensor for monitoring the parameter of the electrostatic voltage on the surface of the object can be verified.

2. The electrostatic sensor monitors the same electrostatic voltage value of different charged target objects at different monitoring distances, and the accuracy of the sensor on the parameter monitoring of the electrostatic voltage of the object surface can be verified.

The application background according to the monitoring scheme is as follows:

In the production line of liquid crystal panels, the same (same structural size) liquid crystal panel flows through various process operation devices, so that the installation distance of the electrostatic sensor (i.e. the monitoring distance, the distance between the electrostatic sensor head and the target object) is inevitably determined according to the space installation requirement of the process operation devices, and in more complex cases, the same production line can exist to produce different types (different structural sizes) of liquid crystal panels.

Reasons for implementing the above monitoring scheme:

The same liquid crystal panel should generate substantially the same static voltage value through the same process, and should obtain substantially the same static eliminating effect (i.e., substantially the same residual static voltage) after the same static eliminator. The installation heights of the electrostatic sensors may be different, so that the electrostatic sensors are convenient to better control the production quality in order to ensure the consistency of the electrostatic voltage monitoring (alarming) standard, and the electrostatic sensors are required to monitor the target objects carrying the same electrostatic voltage value under different monitoring distances.

The implementation of the monitoring scheme has the advantages that:

In principle, objects with the same surface static voltage value do not necessarily carry the same static charge amount, i.e. the capacitance of the objects is different. The static charge on the surface of the object can radiate the static electric field outwards, and the static electric field formed by the static electric charge is zero at the grounding conductor at or near infinity, so that the farther the static electric charge is away, the weaker the field intensity is, namely the smaller the static voltage value monitored by the static sensor is (the static sensor in the patent is essentially used for monitoring the static electric field formed by the static electric charge on the surface of the object).

The electrostatic sensor in the patent realizes different target objects under different monitoring distances by setting different monitoring coefficients (amplification coefficients) and adopting a method of an electronic element with higher resolution, but the electrostatic voltage value monitored by the sensor is consistent as long as the electrostatic voltage value on the surface of the electrostatic sensor is the same.

The monitoring result has the advantages of consistency, uniqueness and repeatability, strong operability and convenience for static control in the production process of products, and good practical application effect.

As shown in fig. 3, the closed-loop electrostatic monitoring and eliminating system according to the technical solution of the present invention is performed and operated as follows:

a) At the first and the tail ends 1a and 1b of the guide rail, a positive high-voltage conductive plug and a negative high-voltage conductive plug (shown as +HV and-HV in figure 3) are respectively arranged, the positive high-voltage conductive plug and the negative high-voltage conductive plug are respectively and correspondingly connected with the positive high-voltage output end and the negative high-voltage output end of the high-voltage direct-current power supply 10 and are used for respectively applying positive voltage and negative voltage to the test flat plate 2 moving to the first and the tail end positions of the guide rail;

b) Along the length of the guide rail, a plurality of predetermined positions (positions 1 to 9 are indicated by ① to ⑨ in the drawing, and the same applies hereinafter), two sets of static electricity eliminating devices (first static electricity eliminating device is indicated by XCQ1 in the drawing, second static electricity eliminating device is indicated by XCQ 2) are respectively provided above two predetermined positions (positions ⑤ and ⑦ in the drawing), and one static electricity monitoring device (reference numerals are indicated by CGQ4, CGQ5 and CGQ 6) is respectively provided above the front and rear predetermined positions (position ④、⑥、⑧ in the drawing) of each set of static electricity eliminating devices.

The rightmost static monitoring device CGQ 6 in the figure has two functions, namely, monitoring whether residual static electricity or static voltage value on the test flat plate 2 is lower than a set alarm threshold value after the second static eliminating device XCQ2 is powered off, and monitoring a negative voltage initial value on the test flat plate 2 at the end position of the guide rail after the high-voltage direct-current power supply 10 applies negative voltage to the test flat plate 2 moving to the end position of the guide rail;

the static monitoring device CGQ 6 can also be respectively arranged by adopting two static monitoring devices CGQ 6 'and CGQ 6' ', wherein one static monitoring device CGQ 6' is used for monitoring whether the residual static electricity or the static voltage value on the test panel 2 after the second static eliminating device XCQ2 is powered down is lower than a set alarm threshold value, the other static monitoring device CGQ 6'' is used for monitoring the initial value of the negative voltage on the test panel 2 at the tail end position of the guide rail, in this case, the static monitoring device CGQ 6'' is arranged above the position ⑧, and the static monitoring device CGQ 6 'is arranged at the position ⑧' between the position ⑦ and the position ⑧ (not shown in the figure);

c) Respectively arranging an electrostatic monitoring device (at a position 2 and a position 3 in the figure) above at least two adjacent preset positions along the length direction of the guide rail, wherein the vertical installation heights of the two electrostatic monitoring devices (marked as CGQ2 and CGQ3 in the figure) from the test flat plate 2 are unequal (in fact, in the figure 3, the vertical installation heights of the electrostatic monitoring devices marked as CGQ1 to CGQ6 from the test flat plate 2 are unequal, so that the same monitoring data verification function can be completed);

d) In system monitoring software, establishing corresponding association relation between each static electricity monitoring device and each static electricity eliminating device through IP addresses, and establishing corresponding control association relation between the static electricity monitoring devices positioned at the front and rear positions of each static electricity eliminating device and the corresponding static electricity eliminating devices, wherein the control association relation at least comprises static electricity monitoring output signals of the static electricity monitoring devices positioned at the front positions of each static electricity eliminating device along the moving direction of a test flat plate, and is used for controlling operation starting control of the static electricity eliminating devices positioned at the rear positions of the static electricity monitoring devices;

e) When the system monitoring software is initially operated, the test panel is positioned at a first position (① is shown in the figure and is the same as the description below) of the head end 1a of the guide rail, and the test panel is electrically contacted with the positive high-voltage output end +HV of the high-voltage direct-current power supply to enable the test panel to be positively charged;

The head-end electrostatic sensor positioned at the first position of the head end of the guide rail monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic sensor on monitoring software;

f) The guide rail PLC controls the test flat plate to move, sequentially passes through each preset position, each electrostatic sensing device arranged at each position respectively monitors the electrostatic voltage on the test flat plate at each corresponding position, and transmits a monitoring signal to the industrial touch screen computer, and if the electrostatic voltage monitored by the electrostatic sensor at a certain position exceeds a set alarm threshold, the corresponding electrostatic sensor outputs a red alarm signal;

g) When the test panel moves to the position 4, the corresponding electrostatic sensing device No. 4 (CGQ 4 in the figure) monitors the electrostatic voltage exceeding the threshold value and transmits an alarm signal to the industrial touch screen computer, and linkage control exists between the electrostatic sensing device 4 and the first electrostatic eliminating device (XCQ 1 in the figure as an example) positioned behind the electrostatic sensing device, so that the industrial touch screen computer (monitoring system) starts the electrostatic eliminating device to work to eliminate the electrostatic charge on the test panel;

h) When the test panel moves to the position 6, the static electricity on the test panel is eliminated by the first static electricity eliminating device (marked as XCQ 1), so that the static electricity on the panel cannot be monitored by the static electricity sensing device No. 5 (marked as CGQ 5) corresponding to the position or the static electricity is lower than a set alarm threshold value;

i) When the test flat plate 2 moves to the position 8, the test flat plate is electrically contacted with a negative high voltage output end-HV of a high voltage direct current power supply to enable the test flat plate to be provided with negative static electricity, and the static electricity sensing device CGQ6 corresponding to the position monitors that the test flat plate is provided with the negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to an industrial touch screen computer, and the test flat plate returns under the control of a guide rail PLC controller;

j) When the test flat plate with negative static electricity returns to the position 7, the monitoring system starts the ion fan to work because the corresponding 6 # static electricity sensing device CGQ6 monitors that the static voltage exceeds the threshold value at the previous position and transmits an alarm signal to the industrial touch screen computer, and the 6 # static electricity sensing device CGQ6 and the second static electricity eliminating device (taking the ion fan as an example and the label is XCQ 2) are in linkage control, so that the negative charge on the test flat plate is eliminated.

K) When the test flat plate moves to the position 6 after the test flat plate is powered off by the ion fan, the corresponding electrostatic sensing device CGQ5 monitors that negative charges on the test flat plate are eliminated or the electrostatic voltage is lower than a set alarm threshold value;

l) subsequently, the test plate passes sequentially through the 5 th, 4 th, 3 rd and 2 nd positions and after a set time of stay at each position, returns to the original 1 st position.

Further, the static monitoring and eliminating system demonstration device is characterized in that at least two static monitoring devices (in the figure, the static sensors No. 2 and No.3 are taken as examples, and the marks are CGQ2 and CGQ 3) with unequal vertical installation heights from the test panel are arranged on the moving path of the test panel, the static pressure of the test panel is monitored, and the actual measurement values of the two static monitoring devices are compared to judge and verify the monitoring accuracy of the static monitoring devices under the same static pressure at a plurality of different monitoring distances.

According to the static electricity monitoring and eliminating system demonstration device, at least two sets of static electricity eliminating devices are arranged on the moving path of the test plate, and the static electricity eliminating performance of various static electricity eliminating devices or various sets of static electricity eliminating devices is judged and verified by comparing the static electricity eliminating effects of the static electricity eliminating devices.

Meanwhile, the static monitoring and eliminating system demonstration device provided by the invention can be used as a static monitoring and eliminating demonstration device and can also play a role in technical demonstration.

In fig. 5, the test plate 2 comprises an upper square stainless steel metal plate and a lower square stainless steel metal plate with the same structural dimension, the lower square stainless steel metal plate is fixedly arranged on a sliding platform 1c of a guide rail, and the upper square stainless steel metal plate and the lower square stainless steel metal plate are isolated by polytetrafluoroethylene cylinders in an insulating manner and supported and fixed;

at the bottom of the upper plate, at the front and rear ends of the center line in the movement direction of the test plate, a conductive end 2a and 2b are respectively fixed, and the conductive end is a hollow columnar structure and is used for contacting positive and negative high-voltage conductive plugs (in the figure, negative high-voltage conductive plug-HV is taken as an example) arranged at the head and tail ends of the guide rail;

as shown in fig. 3 and 5, the positive and negative high-voltage conductive plugs are respectively arranged at the head end 1a and the tail end 1b of the guide rail and are respectively and correspondingly electrically connected with the positive and negative high-voltage output ends of the high-voltage direct-current power supply.

The implementation of the technical scheme has the advantages that:

In principle, objects with the same surface static voltage value do not necessarily carry the same static charge amount, i.e. the capacitance of the objects is different. The static charge on the surface of the object can radiate the static field outwards, and the ground conductor at or near infinity is zero potential, so that the farther the static charge is away from the static charge, the weaker the field strength is, namely the smaller the static voltage value monitored by the static sensor is (in the technical scheme of the patent, the static sensor is essentially used for monitoring the static field formed by the static charge on the surface of the object).

Examples:

Example 1:

The hardware arrangement is shown in fig. 3 and 5, and the logic control flow of the ion rod and the ion blower is shown in fig. 6a and 6b respectively:

1. And building the demonstration device frame by using the aluminum alloy section.

2. The industrial touch screen computer 8, the integrated power supply 9, the high-voltage direct-current power supply 10, the guide rail PLC controller 11 and the sliding guide rail 1 are installed and fixed on a demonstration frame.

3. A test panel device (abbreviated as a test panel, reference numeral 2 in the figure) is mounted and fixed on the rail slide platform 1 c. The test flat plate device is two square stainless steel flat plates with identical structural shapes, the middle of the test flat plate device is fixed by 4 polytetrafluoroethylene cylinders in an insulating way, and the two flat plates are parallel to each other and are projected and overlapped with each other. And the front end and the rear end of the central line of the movement direction are respectively welded with a conductive hollow hexagonal column at the bottom of the upper flat plate (the power-on plate) for electrically contacting with the high-voltage plug. The lower plate is fixed on the guide rail sliding platform and is grounded together with the whole demonstration device frame.

4. The electrostatic sensor 1 (i.e., the electrostatic sensor numbered 1, the electrostatic sensor numbered CGQ1, the electrostatic sensor numbered 2, the electrostatic sensor numbered 1) is mounted at the position 2 by using a mounting round bar, a mounting pendant, a mounting bracket, and the like in this order (i.e., the aforementioned first position, the reference symbol ①, and the like in the drawing), the electrostatic sensor 3 is mounted at the position 3, the electrostatic sensor 4 is mounted at the position 4, the ion rod (marked with XCQ 1 in the figure) is mounted at the position 5, the electrostatic sensor 5 is mounted at the position 6, the ion blower (marked with XCQ 2 in the figure) is mounted at the position 7, and the electrostatic sensor 6 is mounted at the position 8. Position 1 is located at the leftmost end of the slide rail (i.e., the rail head end described above) and position 8 is located at the rightmost end of the slide rail (i.e., the rail tail end described above).

The distance between the center of the position 1 and the center of the position 2 is 25cm, the distance between the center of the position 2 and the center of the position 3 is 25cm, the distance between the center of the position 3 and the center of the position 4 is 35cm, the distance between the center of the position 4 and the center of the position 5 is 25cm, the distance between the center of the position 5 and the center of the position 6 is 25cm, the distance between the center of the position 6 and the center of the position 7 is 35cm, and the distance between the center of the position 7 and the center of the position 8 is 35cm.

The sensor is installed so that a detection window of the sensor faces the center of the test panel, the ion rod is installed so that the ion rod faces the center of the test panel, and the ion fan is installed so that an air outlet of the ion fan faces the center of the test panel.

The electrostatic sensor 1 is installed at a height of 5mm from a detection window, the electrostatic sensor 2 is installed at a height of 50mm from a detection window, the electrostatic sensor 3 is installed at a height of 100mm from a detection window, the electrostatic sensor 4 is installed at a height of 200mm from a detection window, the ion rod is installed at a height of 50mm from an electrode needle, the electrostatic sensor 5 is installed at a height of 300mm from a detection window, the ion fan is installed at a height of 300mm from an air outlet, and the electrostatic sensor 6 is installed at a height of 500mm from a detection window.

5. Positive and negative high-voltage plugs of the high-voltage direct-current power supply 8 are respectively fixed at the first end 1a and the second end 1b of the guide rail in an insulating manner, and can be inserted into hollow hexagonal conductive columns at the front end and the rear end of the central line of the bottom of the upper flat plate (the power-on plate) when the test flat plate moves to the positions 1 and 8.

6. Through the guide rail PLC controller, a test panel running program is compiled, so that the test panel runs from the initial position 1 to the position 2, the position 3, the position 4, the position 5, the position 6, the position 7 and the position 8 sequentially and accurately, then runs back, sequentially passes through the position 7, the position 6, the position 5, the position 4, the position 3 and the position 2, and finally returns to the initial position 1.

7. The test plate is programmed to stay at position 1 for 1.5s, at position 2 for 1.5s, at position 3 for 1.5s, at position 4 for 1.5s, at position 5 for 1.5s, at position 6 for 2s, and at position 8 for 1.5s by the rail PLC controller.

The test plate should stay at each electrostatic sensor for a period of time greater than the time required for the electrostatic signal to be transmitted to the monitoring system plus the sensor monitoring response time.

The residence time of the test plate at the ion rod and the ion fan is larger than the time required by the wireless transmission of the control signal to the power eliminator, the work starting time of the power eliminator and the power eliminator.

Namely, the retention time of the test plate at the ion rod (position 5) is greater than the normal power-off time of the ion rod, the time required for the ion rod to recover to normal operation from a standby state, and the time required for the control signal of the monitoring system to be transmitted to the ion rod.

The residence time of the test plate at the ion fan (position 7) is greater than the normal power-off time of the ion fan, the time required for the ion fan to recover to normal operation from a standby state, and the time required for the control signal of the monitoring system to be transmitted to the ion fan.

8. And turning on a power switch of the integrated power supply to supply power to the electrostatic sensor, the ion rod and the ion fan.

The integrated power supply comprises a wireless transmitting module, monitoring data and working state data can be transmitted to monitoring software of the industrial touch screen computer, and meanwhile, the monitoring software selects corresponding output control signals to instruct the ion rod and the ion fan to operate or stand by according to the monitoring signals of the electrostatic sensor.

9. Opening an industrial touch screen computer, establishing wireless network connection with an integrated power supply, starting a monitoring software program, setting a static sensor 4 and an ion bar XCQ1 to control in a linkage manner in the monitoring system software, and controlling a static sensor 6 and an ion fan XCQ2 to control in a linkage manner;

as shown in fig. 6a and 6b in combination, the electrostatic warning threshold is set to ±500V.

When the static voltage value is monitored to exceed 500V, the static sensor outputs an alarm signal to the monitoring software through the wireless module, and the monitoring software sends out an instruction to start the ion rod or the ion fan to continuously work for a set time so as to eliminate static charges on the test panel.

And when the static voltage value is not more than 500V, the monitoring software sends a standby instruction to the ion rod or the ion fan. The electrostatic sensor is always in a monitoring working state, monitoring data are immediately transmitted to the monitoring software in the whole monitoring process, electrostatic voltage data are displayed in real time, and when the electrostatic voltage threshold exceeds a set electrostatic voltage threshold, a red lightning alarm mark appears. The standby state, the working state and the real-time running parameters of the ion rod and the ion fan are continuously transmitted to the monitoring software, and the state parameters of the ion rod and the ion fan are displayed in real time.

10. And regulating the positive high voltage output and the negative high voltage output of the high-voltage direct current power supply to +/-1500V, and simultaneously outputting the positive high voltage and the negative high voltage to a positive high voltage plug and a negative high voltage plug.

11. Starting a guide rail PLC running program, and running a test panel according to a set program, wherein the positive high-voltage output is used for testing the upper panel at the position 1, and the electrostatic sensor 1 monitors the static voltage value of +1500V on the test panel;

When the test flat plate moves to the position 2, the electrostatic sensor 2 monitors the static voltage value of +1500V on the test flat plate, and when the test flat plate moves to the position 3, the electrostatic sensor 3 monitors the static voltage value of +1500V on the test flat plate;

When the test flat plate moves to the position 4, the electrostatic sensor 4 monitors that the test flat plate is provided with a +1500V electrostatic voltage value, and as the electrostatic sensor 4 and the ion rod are set to be in linkage control, when the test flat plate moves to the position 5, the ion rod is in a working state, the electrostatic charge on the test flat plate is eliminated until the set working time is reached, and the test flat plate enters a standby state.

The test plate after the power is removed moves to the position 6, and the electrostatic sensor 5 detects that the static voltage value on the test plate is not detected or is lower than the set static threshold value.

When the test plate moves to position 7, the ion blower is still in standby state.

The test plate moves to the position 8, the upper plate (the power-on plate) is powered by negative high-voltage output, the electrostatic sensor 6 monitors a static voltage value of-1500V, then an alarm signal is sent out, and the monitoring system sends out a command to enable the ion fan to work.

When the test flat plate returns to the position 7, the ion fan is in a working state, and the static charge on the test flat plate is eliminated until the set working time is reached, and the test flat plate enters a standby state.

The test plate continues to move back in the program, and as the static charge on the test plate has been eliminated by the ion blower, at positions 6, 4,3, 2, the electrostatic sensors 5,4, 3, 2 monitor that there is no electrostatic voltage value on the test plate or that the electrostatic voltage value is below a set electrostatic threshold.

In the embodiment, the key point is that a high-voltage direct-current power supply is used for powering up a test panel to simulate a charged object in an artificial deliberate experimental mode, the charged object is taken as a monitoring object, the monitoring accuracy of a plurality of electrostatic sensors under the same electrostatic voltage at a plurality of monitoring distances is verified, the electricity eliminating performance of an ion fan and an ion rod can be verified together, and the operation reliability of a monitoring system can be verified because the linkage control of the electrostatic sensors and the electricity eliminating devices (the linkage control of CGQ4 and XCQ1 and the linkage control of CGQ6 and XCQ 2) can be set through monitoring software.

Example 2:

The hardware arrangement is shown in fig. 4, and the logic control flows of the ion rod and the ion blower are shown in fig. 7a and 7b respectively.

Embodiment 2 differs from embodiment 1 in that:

1. And a position 9 is additionally arranged at a position 25cm far from the center of the position 6, and a static sensor 7 is correspondingly arranged at the position 9, and the static sensor 5 is arranged at the same height.

The electrostatic sensor 7 is additionally arranged to perfect linkage arrangement (linkage control of CGQ4, CGQ5 and XCQ1, linkage control of CGQ6, CGQ7 and XCQ 2) of the electric eliminator and the electrostatic sensor, and strengthen accurate adjustment of the electric eliminator. If the electrostatic sensor CGQ5 detects that the test flat plate after the charge elimination of the charge eliminator (ion rod) XCQ1 still has larger residual electrostatic voltage (exceeds a set electrostatic threshold), the CGQ5 sends an alarm signal to the monitoring system, the monitoring system adjusts the ion output performance (charge eliminating performance) of the XCQ1 according to the electrostatic voltage signal monitored by the monitoring system, and when the test flat plate moves from the 1a end and passes through the XCQ1 again, the electrostatic charge on the test flat plate is thoroughly eliminated.

2. And programming a test panel running program through the guide rail PLC controller, so that the test panel stays at the position 9 for 1.5s.

3. And the electrostatic sensor 4 and the electrostatic sensor 5 are arranged in the monitoring system software to control in a linkage way with the ion rod XCQ 1, and the electrostatic sensor 6 and the electrostatic sensor 7 are controlled in a linkage way with the ion fan XCQ 2.

4. Because the electrostatic sensor 4 and the electrostatic sensor 5 are both linked with the ion rod, when the test flat plate moves to the position 4, the electrostatic sensor 4 monitors the static voltage of the test flat plate with +1500V, exceeds the set static threshold value, the electrostatic sensor 4 sends an alarm signal to the monitoring system through the wireless transmitting module in the integrated power supply, and the monitoring system sends a control instruction to start the ion rod to work.

When the test plate moves to position 5, the ion rod then de-energizes the static charge on the test plate.

When the test flat plate moves to the position 6, the electrostatic sensor 5 monitors that the test flat plate has no electrostatic voltage or the electrostatic voltage is less than 500V, and transmits the monitored electrostatic signal to the monitoring system, and the monitoring system sends out a control instruction to enable the ion rod to stop power-off and enter a standby state.

In contrast, if the electrostatic sensor 5 monitors that the static voltage of the test plate is greater than or equal to 500V, it indicates that the charge eliminating performance of the ion rod is reduced, the electrostatic sensor 5 transmits an electrostatic alarm signal to the monitoring system, and the monitoring system sends a red lightning alarm mark or sends an adjustment instruction for the operation parameters of the ion rod so as to improve the charge eliminating capacity of the ion rod.

5. Because the electrostatic sensor 6 and the electrostatic sensor 7 are both linked with the ion fan XCQ1, when the test flat plate moves to the position 8, the electrostatic sensor 6 monitors the static voltage of the test flat plate belt-1500V, exceeds the set static threshold value, the electrostatic sensor 6 sends an alarm signal to the monitoring system through the wireless transmitting module in the integrated power supply, and the monitoring system sends a control instruction to start the ion fan to work.

When the test plate moves to the position 7, the electrostatic charge on the test plate is eliminated by the ion blower XCQ 2.

When the test flat plate moves to the position 9, the electrostatic sensor 7 monitors that the test flat plate has no electrostatic voltage or the electrostatic voltage is less than 500V, and transmits the monitored electrostatic signal to the monitoring system, and the monitoring system sends out a control instruction to enable the ion fan to stop power-off and enter a standby state.

In contrast, if the electrostatic sensor 7 monitors that the static voltage of the test plate is greater than or equal to 500V, it indicates that the static eliminating performance of the ion fan is reduced, the electrostatic sensor 7 transmits a static alarm signal to the monitoring system, and the monitoring system sends a red lightning alarm mark or sends an adjustment instruction for the running parameters of the ion fan so as to improve the static eliminating capacity of the ion fan.

In the embodiment, the important point is that by additionally arranging the electrostatic sensor, the current eliminator is arranged in linkage with the sensors arranged at the front end and the rear end of the current eliminator at the same time, and the accurate adjustment of the current eliminator is enhanced. .

Example 3:

1. The hardware arrangement structure relationship is shown in fig. 4, and the logic control flow of the ion rod and the ion blower are shown in fig. 8a and 8b respectively.

And the electrostatic sensor 4, the electrostatic sensor 5 and the ion rod are arranged to be linked, and the electrostatic sensor 6, the electrostatic sensor 7 and the ion blower are arranged to be linked.

2. When the electrostatic sensor 4 monitors that the flat electrode is provided with +1500V electrostatic voltage, the electrostatic sensor sends an alarm signal to the monitoring system through a wireless transmitting module in the integrated power supply, and the monitoring system sends a control command to start the ion rod to work so as to eliminate electrostatic charge on the flat plate.

3. When the static voltage of the flat plate is larger than +500V (such as +600V) after the ion rod is powered off, the sensor 5 and the sensor 7 indicate that the power consumption capacity of the ion rod is reduced, the sensor 7 sends out a static alarm signal to a monitoring system through a wireless transmitting module in an integrated power supply, and the monitoring system sends out a control instruction to start the ion fan to work so as to continuously eliminate the static charge on the flat plate.

4. When the electrostatic sensor 6 monitors that the flat electrode is provided with-1500V electrostatic voltage, the electrostatic sensor sends an alarm signal to the monitoring system through a wireless transmitting module in the integrated power supply, and the monitoring system sends a control command to start the ion fan to work so as to eliminate the electrostatic charge on the flat plate.

5. When the static voltage of the flat plate is smaller than-500V (for example, -600V) after the ion fan is powered off, the sensor 7 and the sensor 5 show that the power-off capability of the ion fan is reduced, the sensor 5 sends out a static alarm signal to a monitoring system through a wireless transmitting module in the integrated power supply, and the monitoring system sends out a control instruction to start the ion rod to work so as to continuously eliminate the static charge on the flat plate.

In this embodiment, compared with embodiment 2, the function of eliminating the residual static electricity on the test panel again by the eliminator is added.

In the embodiment, the key point is that after the first power-off, static voltage exceeding a set threshold value still exists on the flat electrode, and at the moment, the monitoring system instructs the subsequent power-off device to continue working to eliminate residual static on the flat electrode.

In conjunction with the above 3 embodiments, in fig. 6a, 6b, 7a, 7b, 8a and 8b, the working logic relationship and control modes of the electrostatic sensor, the electrostatic eliminating device (including the ion rod and/or the ion blower) and the monitoring system are clearly shown in the technical solutions of the present invention, and since they are drawn by the conventional art, the meaning and the logic relationship thereof will be completely known to those skilled in the art without any ambiguity, and will not be described herein.

The technical scheme of the invention establishes a corresponding association relation between each static monitoring device and each static eliminating device through the IP address, is convenient for constructing a static monitoring and eliminating system which can meet the demands of customers in a production field in a local area network construction mode, has good expandability, adopts a closed-loop feedback mode, implements linkage control in a one-to-one correspondence manner between the static monitoring and eliminating devices, enhances the self-judging capability and static eliminating effect of the whole static monitoring and eliminating system, is beneficial to users to judge or judge whether the functions of each monitoring and static eliminating component are normal or not by themselves, shortens the time or period of solving problems and processing faults on the spot, can judge and verify the monitoring accuracy of a plurality of static monitoring devices under the same static pressure under a plurality of different monitoring distances, and adopts a logic control mode of repeated static monitoring and repeated static elimination, thereby realizing intelligent automatic monitoring and static elimination in a true sense.

The invention can be widely used in the field of design and management of static electricity monitoring and eliminating systems.

Claims

1. The utility model provides a closed-loop static electricity monitoring and eliminating system, includes static electricity eliminating device, static electricity monitoring device and is located movable waiting to disappear electric product object on the guide rail, characterized by:

When a product object to be eliminated moves along the guide rail, the product object to be eliminated sequentially passes through the first electrostatic monitoring device to the third electrostatic monitoring device, the first electrostatic monitoring device controls the first electrostatic eliminating device to output first electrostatic eliminating capacity corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product object to be eliminated, and the first electrostatic eliminating device eliminates the first electrostatic of the product object to be eliminated;

Finally, the third static monitoring device monitors whether the residual static voltage of the product object to be eliminated meets the process specification requirement, if the residual static voltage meets the specification, the process is released, and if the residual static voltage exceeds the standard, an alarm signal is output;

The closed-loop type static monitoring and eliminating system is further provided with a fourth static monitoring device, a fifth static monitoring device, a test flat plate capable of controlled movement along the guide rail, a high-voltage generator, a guide rail PLC controller and an integrated power supply;

The fourth electrostatic monitoring device or the fifth electrostatic monitoring device or the integrated power supply are respectively provided with independent IP addresses and are respectively connected with the control computer through a wired or wireless local area network;

the control computer is an industrial touch screen computer, and system monitoring software is installed in the industrial touch screen computer and used for displaying the working state of the equipment on line and monitoring the working conditions of each static monitoring device and each static eliminating device;

The vertical installation heights of the fourth electrostatic monitoring device and the fifth electrostatic monitoring device from the test panel are unequal;

Each electrostatic monitoring device realizes the aim of consistent electrostatic voltage value monitored by a sensor as long as the electrostatic voltage value of the surface of different target objects at different monitoring distances is the same by setting different monitoring coefficients for different monitoring distances and adopting a method of higher-resolution electronic elements;

The test panel is used for simulating a product object to be eliminated, and can reciprocate along the guide rail, stay at a certain position of the guide rail or stay at a certain preset position for preset time under the control of the guide rail PLC;

The high-voltage generator is used for applying initial static voltage to the test flat plate which moves to the head end or the tail end of the guide rail, wherein the initial static voltage comprises positive voltage or negative voltage;

the integrated power supply is used for supplying power to each static monitoring device and each static eliminating device, and simultaneously transmitting the working state and working parameters of each device to system monitoring software in the control computer in real time through a wired or wireless network;

The closed-loop type static electricity monitoring and eliminating system is characterized in that independent IP addresses are arranged for each static electricity monitoring device or each static electricity eliminating device, corresponding relations are established for the static electricity monitoring devices and the static electricity eliminating devices through the IP addresses, a static electricity monitoring device is respectively arranged at the front position and the rear position of the static electricity eliminating device, a closed-loop feedback mode is adopted, one static electricity monitoring device and one static electricity eliminating device are in one-to-one correspondence to implement linkage control, and the static electricity monitoring and eliminating function is automatically carried out on a product object to be eliminated, or the eliminating capacity of the static electricity eliminating device is monitored or judged, a plurality of static electricity monitoring devices are arranged at different vertical distances, the actual measurement values of the static electricity monitoring devices on the same charged object are compared, and the monitoring accuracy of the static electricity monitoring devices under the same static electricity pressure is judged and judged under a plurality of different monitoring distances.

2. The closed-loop electrostatic monitoring and eliminating system according to claim 1, wherein the first, second and third electrostatic monitoring devices are respectively provided with independent IP addresses;

The first, second and third static monitoring devices, the first and second static eliminating devices are respectively connected with the control computer in a communication way through a wired or wireless local area network.

3. The closed-loop electrostatic monitoring and eliminating system according to claim 1, wherein the input ends of the first, second and third electrostatic monitoring devices are respectively and electrically connected with the output end of the integrated power supply and are in communication connection with the control computer through a communication module in the integrated power supply;

And the power input ends of the first and second static elimination devices are respectively and correspondingly connected with the power output ends of the integrated power supply.

4. The closed-loop type static electricity monitoring and eliminating system according to claim 1, wherein the closed-loop type static electricity monitoring and eliminating system at least adopts twice static electricity monitoring to the product object to be eliminated, and according to the result of each static electricity monitoring, the capability of the next static electricity elimination is controlled, and the product object to be eliminated is automatically eliminated for multiple times.

5. The system of claim 1, wherein the vertical mounting height of the fourth and fifth static monitoring devices from the test plate is not equal to the vertical mounting height of the first through third static monitoring devices from the test plate.

6. The closed loop static monitoring and elimination system according to claim 1, wherein said closed loop static monitoring and elimination system operates as follows:

a) The head and tail ends of the guide rail are respectively provided with a positive high-voltage conductive plug and a negative high-voltage conductive plug, the positive high-voltage conductive plug and the negative high-voltage conductive plug are respectively and correspondingly connected with the positive high-voltage output end and the negative high-voltage output end of the high-voltage power supply and are used for respectively applying positive and negative voltages to the test flat plate moving to the head and tail end positions of the guide rail;

e) When the system monitoring software is initially operated, the test panel is positioned at a first position of the head end of the guide rail, and the test panel is electrically contacted with a positive high-voltage output end of a high-voltage power supply, so that the test panel is positively charged;

The head-end electrostatic monitoring device is positioned at a first position of the head end of the guide rail, monitors the electrostatic voltage on the flat plate, transmits a monitoring signal to the industrial touch screen computer, and displays the electrostatic voltage monitored by the electrostatic monitoring device on monitoring software;

f) The guide rail PLC controller controls the test panel to move, sequentially passes through the second position, the third position and the fourth position, and each static monitoring device arranged at the positions respectively monitors the static voltage of the test panel at the corresponding position and transmits a monitoring signal to the industrial touch screen computer;

g) When the test panel moves to the fourth position, the corresponding static voltage monitored by the static monitoring device exceeds a threshold value and transmits an alarm signal to the industrial touch screen computer, and linkage control exists between the static monitoring device and the first static eliminating device positioned behind the static monitoring device, so that the industrial touch screen computer starts the static eliminating device to work and eliminates static charges on the test panel;

h) When the test flat plate moves to the sixth position, the static electricity on the test flat plate is eliminated by the first static electricity eliminating device, so that the static electricity monitoring device corresponding to the position cannot monitor static electricity on the flat plate or the static voltage value is lower than a set static electricity threshold value;

i) When the test flat plate moves to the eighth position, the test flat plate is electrically contacted with the negative high-voltage output end of the high-voltage power supply to enable the test flat plate to carry negative static electricity, and the static electricity monitoring device corresponding to the position monitors that the test flat plate carries the negative static electricity and exceeds a set threshold value, so that an alarm signal is transmitted to an industrial touch screen computer, and the test flat plate returns under the control of the guide rail PLC controller;

j) When the test flat plate with negative static electricity returns to the seventh position, the corresponding static electricity monitoring device monitors that the static voltage exceeds a threshold value in the former position and transmits an alarm signal to the industrial touch screen computer, and the static electricity monitoring device and the second static electricity eliminating device are in linkage control, so that the monitoring system starts the second static electricity eliminating device to work to eliminate negative charges on the test flat plate;

k) When the test flat plate is powered off by the second static electricity eliminating device, the test flat plate moves to a sixth position, and the corresponding static electricity monitoring device monitors that negative charges on the test flat plate are eliminated;

7. The system according to claim 1, wherein the static electricity monitoring and eliminating system comprises at least two static electricity eliminating devices arranged on the moving path of the test plate, and the static electricity eliminating performance of each static electricity eliminating device or each static electricity eliminating device is evaluated and verified by comparing the static electricity eliminating effects of each static electricity eliminating device.

8. The closed-loop electrostatic monitoring and eliminating system according to claim 1, wherein the test plate comprises an upper square stainless steel metal plate and a lower square stainless steel metal plate which have the same structural dimensions, the lower square stainless steel metal plate is fixedly arranged on a sliding platform of the guide rail, and the upper square stainless steel metal plate and the lower square stainless steel metal plate are isolated and supported by polytetrafluoroethylene cylinders;

the positive and negative high-voltage conductive plugs are respectively arranged at the head and tail ends of the guide rail and are respectively and correspondingly and electrically connected with the positive and negative high-voltage output ends of the high-voltage power supply.