CN104597319A - Carrier wave guide rail type ammeter and shell part thereof - Google Patents

Abstract

The invention discloses a carrier rail type electric meter, which includes a body, and the body includes: a first electrical part having a signal acquisition terminal and a metering circuit connected thereto; a second electrical part plugged in with the first electrical part; part, through which the MCU obtains the power signal for data processing, stores it through its first memory, and carries out carrier data communication through the built-in carrier module; wherein an electrical pin is provided on the side of the first electrical part, and the The side of the second electrical part is provided with an electrical slot matched with it to realize plug-in combination. The invention can realize convenient disassembly and assembly, the weak current part, that is, the second electrical part can be removed by the installer, and the carrier module and data are stored in it, which is convenient for the tester to test, and in the process of removing the weak current part, the strong current part , that is, the first electrical part can still be used for normal metering or data collection, and when reassembled, the data can be read correctly.

Description

Carrier rail type electric meter and its shell components

technical field

The present invention relates to intelligent centralized meter reading technology, more specifically, the present invention relates to a carrier-type single-phase electric measuring equipment and its supporting equipment.

Background technique

Automatic meter reading system (AMR) refers to the system in which the remote master station server reads the energy record value data of the electric energy meter in the station area through the transmission medium (such as wireless, cable, power line carrier (PLC), etc.), which is mainly composed of Composed of electric energy meter, collector, concentrator and remote master station server. The concentrator is an intermediate component of the AMR system. It communicates with the master station through the data channel, completes the instructions of the master station, automatically completes the meter reading record data, and transmits it to the master station according to the rules specified by the master station. As the scale and complexity of the power supply market gradually increase, higher requirements are placed on the concentrator in the automatic meter reading system.

When the power management department or power product manufacturer reads or tests the power grid monitoring and metering equipment, it mainly relies on the tester to use the handheld device to perform wireless data acquisition in a certain preset area in the station area, or During the commissioning process, for example, a twisted-pair cable hundreds of meters long is laid in a building, and it is connected to the power line in the building for carrier meter reading. However, due to problems such as signal strength, it may occur when replacing another building. There are no practical problems such as signal or wiring difficulties, and different testers need to work in sections, so the technical problems are highlighted: first, the test process is not repeatable, and the test operation needs to be repeated in different environments, relying entirely on the testers' field experience ; secondly, the labor cost and test cost are relatively large, and it is inconvenient to use; furthermore, the tester cannot control the specific transmission/reception strength of the carrier signal, which will cause the tester to try repeatedly, time-consuming, and the collected The strength of the signal cannot be analyzed qualitatively and quantitatively, which makes it impossible to analyze the test results, which is not helpful to the test process.

In the prior art, there is no use of portable on-site testing devices, and testers carry different types of testing instruments, which cannot meet the purpose of data collection and integration.

Furthermore, in the prior art, there is no use of split rail type ammeters, that is, the strong current part and the weak current part are isolated from each other and can be disassembled, and the data information of the carrier power line is still commonly used to read.

Contents of the invention

The present invention aims to solve the above-mentioned defects, and designs a single-phase guide rail type electric meter, which can be applied to data acquisition equipment in the power system of the grid, such as electric meters, collectors or concentrators, or used in strong power distribution transformer terminals in some occasions. Another embodiment of the present invention designs a casing for equipment, which is convenient for inspection personnel to use and can protect internal electrical components from damage. The technical effect of the present invention is embodied by the following technical solutions:

Technical solution 1: A carrier rail type electric meter, which has a body, and the body includes: a first electrical part, with a signal acquisition terminal connected to the AC power line of the external power grid, and a metering circuit connected to it, to obtain the collected data The electric power consumption uses the pulse signal and calculates the power signal; the second electric part plugged with the first electric part obtains the electric power signal through the MCU for data processing, stores it through its first memory, Carrier data communication is carried out through the built-in carrier module; wherein, electrical pins are provided on the side of the first electrical part, and electrical slots matched with it are provided on the side of the second electrical part to realize plug-in combination .

In one embodiment, the first electrical part further includes: a second memory, configured to store the calculated power signal synchronously with the first memory; and a display circuit, configured to display the power signal.

In one embodiment, it further includes a cover plate for enclosing the first electrical part and covering the pins when the second electrical part is detached from the first electrical part.

In one embodiment, a slot hole is provided on the other side of the first electrical part, and a part of the cover plate penetrates the slot hole and extends until completely covering the pins.

In one embodiment, the second electrical part is connected to an external carrier signal reading device, and the data in the first memory thereof is read.

Technical solution 2: a shell part of a guide rail type electric meter, the shell part has a first shell plate covering the electrical connection part of the guide rail type electric meter, which further includes a second shell plate covering another electrical connection part of the guide rail type electric meter, the The first shell board described above includes: the first electrical part, which has a signal acquisition terminal connected to the AC power line of the external power grid, and a metering circuit connected to it, which acquires the pulse signal of the collected power consumption and calculates it to obtain a power signal ; The second electrical part, which is plugged with the first electrical part, obtains the power signal through the MCU for data processing, stores it through its first memory, and performs carrier data communication through the built-in carrier module; wherein The side of the first electrical part is provided with electrical pins, and the side of the second electrical part is provided with a matching electrical slot to realize plug-in combination; the second shell plate is used as the first shell The additional protective structure of the plate, the side is fixed in a certain number of correspondingly arranged slots for positioning.

In one embodiment, the second housing board includes a first panel and a second panel, wherein an electronic label contact is provided in the first panel for electrically connecting with the electrical pins and recording the The power signal in the first memory, the second panel as an extension part outside the first shell plate, is fixed by means of a lead seal.

In one embodiment, the lead seal is made of plastic, and the plastic is selected from a heat-deformable material, and there is a fixed breaking part between the first panel, and when the operator needs to pull out the second shell panel, the The heating method makes the second panel break, and the second shell plate is ejected through the cover plate opening button on the first shell plate.

In one embodiment, the first electrical part is provided with a cover opening unit, and when the second electrical part is plugged in again, it is determined whether to open the second electrical part through the inductive induction between the electronic label contact piece and the second electrical part. Two shell plates, if so, press the control key of the cover plate opening unit to push out the second panel through the spring assembly in the first shell plate.

In one embodiment, the electrical connection between the electronic tag contact member and the first electrical part or the second electrical part is realized by means of electromagnetic induction or photoelectric induction.

Based on this, the technical effect of the present invention is prominently reflected. First, the rail-type electric meter of this embodiment can be easily disassembled and assembled. The weak current part, that is, the second electrical part can be removed by the installer, and the carrier module and data are stored in it, which is convenient for testers. Test, and in the process of dismantling the weak current part, the strong current part, that is, the first electrical part can still measure or collect data normally, and when reassembling, the data can be read correctly.

Description of drawings

Fig. 1 is a schematic perspective view of disassembly and assembly of the carrier rail type electric meter of the present invention.

Detailed ways

Referring to Fig. 1, an embodiment of the carrier rail type ammeter, for example, the carrier meter includes a cube-shaped body composed of a first electrical part 2 and a second electrical part 1 that can be plugged into each other. Of course, for an ANSI type ammeter, it can be Form a circular frustum-shaped structure, the bottom is the first electrical part, and the top is the second electrical part. The first electrical part 2 is connected to the 220V or 380V AC AC mains user power line through the power signal acquisition terminal, and reads the AC power line The voltage and current signals, that is, the input and output terminals of the L line and N line shown in the figure, are converted into digital signal values through the A/D circuit, and the power signals of the voltage U and current I are obtained and calculated through the metering circuit; The second electrical part 1 obtains the calculated power signal P=ΣU·I through the MCU for data processing, stores it through its first rewritable (MTP) memory, and performs external carrier data communication through the built-in PLC carrier module ; wherein as shown in Figure 1, the top of the first electrical part 2 is provided with an electrical pin 31, and the bottom of the second electrical part 1 is provided with an electrical slot matched with it (not shown in the figure out) to achieve plug-in combinations.

In one embodiment, the first electrical part 2 further includes: a second memory for synchronously storing the calculated power signal with the first memory; a display circuit 32 for displaying the power signal.

In one embodiment, it further includes a cover plate 4 for enclosing the first electrical part 2 when the second electrical part 1 is detached from the first electrical part 2, covering and contacting the upper end of the pin 31 .

In one embodiment, a slot 34 is provided on the other side 3 of the first electrical part 2, a part 41 of the cover plate 4 penetrates into the slot and extends along the H1 direction until completely covering the pins. Section 31.

In one embodiment, the second electrical part 1 can be connected to an external carrier signal reading device (such as a PC in the electric power management department), and the data in the first memory thereof can be read.

Or in another embodiment, the housing part of this DIN-rail type ammeter has first housing plates 1 and 2, covering the electrical wiring part in the DIN-rail type ammeter, and it further includes a second housing plate 4, covering the other part of the DIN-rail type ammeter An electrical wiring part, the first shell plate includes: the first electrical part 1, which has a signal acquisition terminal connected to the AC power line of the external power grid, and a metering circuit connected to it, to obtain the collected electric energy consumption pulse signal and calculate the power signal; the second electric part 2, which is plugged with the first electric part 2, obtains the power signal through the MCU for data processing, stores it through its first memory, and uses the built-in The carrier module performs carrier data communication; wherein electrical pins are provided on the side of the first electrical part 2, and electrical slots matched with it are provided on the bottom side of the second electrical part 1 to realize plug-in combination ; The second shell plate 4 is used as an additional protective structure for the first shell plate 2, and its side is fixed in the corresponding slot 42 for positioning.

In one embodiment, the second housing plate 4 includes a first panel 41 and a second panel 42, wherein the first panel 41 is provided with an electronic label contact for electrically connecting with the electrical pin 31 And record the power signal or fault maintenance information in the first memory, the second panel 42, as an extension part outside the first shell plate 4, does not extend into the control 34, by means of a lead seal (not shown in the figure) out) to be fixed.

In one embodiment, the lead seal is made of plastic, and the plastic is selected from a heat-deformable material, and there is a fixed breaking part between the first panel, and when the operator needs to pull out the second shell panel, the The heating method makes the second panel break, and the second shell plate is ejected through the cover plate opening button on the first shell plate.

In one embodiment, the first electrical part 2 is provided with a cover-opening unit 33, and when the second electrical part is re-plugged against the direction of H2, the electronic label contacts and the second electrical part 1 The electric induction of (for example) infrared interface determines whether to open the second shell plate 4, if so, then press the control key 33 of the cover plate unit to push out the second panel 4 by the spring assembly in the first shell plate 2.

In one embodiment, the electrical connection between the electronic tag contact member and the first electrical part 2 or the second electrical part 1 is realized by means of electromagnetic induction (such as RF) or photoelectric induction (such as infrared).

In one embodiment, the first electrical part 2 further includes a second MTP memory for storing the calculated power signal P according to a preset time sequence TN with the first MTP memory. That is, in a normal working state, the data in the first MTP memory and the second MTP memory should be kept the same and synchronized. And because the normal measurement of the carrier meter cannot be affected during the separation of modules 1 and 2, two memories are designed. According to the principle of electric measurement technology, electric energy and electric quantity W=∫P·t, so in the case of normal power signal storage in Baocheng, the clock signal TN should be kept normal at the same time. Or in another embodiment, the power signal in the second memory is recorded by the module 4, and the clock is given. When the modules 1 and 2 need to be rejoined, the information in the electronic label contact of the module 4 can be read by the MCU. Pick.

Or in another embodiment, the second shell plate 4 is further provided with a clock for triggering the preset timing TN, wherein the preset timing TN is designed to: start from the second electrical part 1 When an electrical part 2 is separated, the first preset time sequence TN1 is triggered to stop sending the current power signal P to the MCU and store it in the second MTP memory; and when the second electrical part 1 is plugged into the first When the electrical part 2 is used, the second preset timing TN2 is triggered, and the power signal stored in the second MTP memory 32 after the preset timing TN1 is inserted into the first MTP memory.

At the same time, the power signal acquisition terminal of the carrier meter is designed as a resistance-capacitance step-down input method to replace the current transformer and voltage transformer used in conventional technology. This can save the internal design structure of the carrier meter and make the structural parts tend to be flat shape, which in turn makes the design of module 2 of the carrier-type meter more portable and simple. Therefore, the test equipment can be made more portable on the basis of considering the normal electrical isolation design and heat insulation design, which is convenient for the power management personnel. carry.

Claims (10)

1. a carrier wave guide rail electric meter, it has a body, it is characterized in that described body comprises:

First electric part, has the signals collecting end connecting the external electrical network alternating current line of force, and the metering circuit be attached thereto, and obtains its power consumption pulse signal collected and in addition computing draws electric power signal;

With the second electric part of the mutual grafting of described first electric part, obtain described electric power signal by MCU wherein and carry out data processing, stored by its first memory, and carry out carrier data communication by built-in carrier module; Wherein

Be provided with electric contact pin at the sidepiece of the first electric part, be provided with electric slot with matching to realize grafting combination at the sidepiece of described second electric part.

2. carrier wave guide rail electric meter according to claim 1, is characterized in that described first electric part comprises further: second memory, for the electric power signal after calculating with described first memory stores synchronized; Display circuit, for showing described electric power signal.

3. carrier wave guide rail electric meter according to claim 1, is characterized in that: comprise cover plate further, for described first electric part fenced when described second electric part departs from the first electric part, covers described contact pin.

4. carrier wave guide rail electric meter according to claim 3, is characterized in that: be provided with slotted eye in the other side of described first electric part, and a part for described cover plate penetrates described slotted eye and extends until cover contact pin completely.

5. carrier wave guide rail electric meter according to claim 1, is characterized in that: described second electric part connects external carrier signal fetch equipment, and the data in its first memory are read.

6. the case member of guide rail electric meter, described case member has the first Shell Plate, covers the electrical connector portion of guide rail electric meter, it is characterized in that: comprise second housing plate further, cover another electrical connector portion of guide rail electric meter, the first described Shell Plate includes:

First electric part, has the signals collecting end connecting the external electrical network alternating current line of force, and the metering circuit be attached thereto, and obtains its power consumption pulse signal collected and in addition computing draws electric power signal;

With the second electric part of the mutual grafting of described first electric part, obtain described electric power signal by MCU wherein and carry out data processing, stored by its first memory, and carry out carrier data communication by built-in carrier module;

Wherein be provided with electric contact pin at the sidepiece of the first electric part, be provided with electric slot with matching to realize grafting combination at the sidepiece of described second electric part;

Described second housing plate, as the additional protection structure of the first Shell Plate, is located in the slotted eye that side is fixed on some relative set.

7. the case member of guide rail electric meter according to claim 6, it is characterized in that: described second housing plate comprises the first panel and the second panel, wherein in described first panel, be provided with electronic tag contact element, for being electrically connected with described electric contact pin and being recorded the electric power signal in described first memory, described second panel, as the extension component outside the first Shell Plate, is fixed by means of lead sealing.

8. the case member of guide rail electric meter according to claim 7, is characterized in that: described lead sealing is made up of plastics.

9. the case member of the guide rail electric meter according to claim 6 and 7, it is characterized in that: described first electric part is provided with Slab element of uncapping, described second electric part again with it grafting time, determine whether to open second housing plate by the electro-induction of electronic tag contact element and the second electric part, if, then press the operating key of Slab element of uncapping, release described second panel by the spring assembly in the first Shell Plate.

10. the case member of guide rail electric meter according to claim 9, is characterized in that: the electrical connection between described electronic tag contact element and the first electric part or the second electric part is realized by electromagnetic induction, optoelectronic induction mode.