CN106429860A - Crane jib false-touch-preventing wireless reminding device - Google Patents

Abstract

The invention discloses a wireless reminder device for preventing accidental touch of a crane arm, which comprises a mechanical casing, an MCU main control circuit and a power supply circuit. The MCU main control circuit and a power supply circuit are arranged inside the mechanical casing. It is connected with an ultrasonic ranging circuit, a wireless transmission circuit, a system protection circuit, and a display and alarm circuit. The power circuit includes a charging circuit, a battery and a step-down circuit. The power circuit is connected to the MCU main control circuit and its connection circuit. The MCU The main control circuit is connected to the receiving terminal through the wireless transmission circuit, the wireless transmission circuit adopts a 433MHZ micro-power wireless transmission circuit, and the ultrasonic ranging circuit adopts a piezoelectric ultrasonic ranging circuit, and the measuring distance is 0.01m~ 10.50m, the ranging accuracy is ±0.3cm, and the output mode is TTL level pulse width output. The invention can prompt the crane driver to correct and control the position of the boom, ensure that the boom is in a safe position, and reduce the occurrence of safety accidents.

Description

Crane arm anti-mis-touch wireless reminder device

Technical field:

The invention relates to an anti-mistouch wireless reminder device, in particular to a crane arm anti-mistouch wireless reminder device.

Background technique:

At present, the normal work of a crane requires the cooperation of two people, the crane driver and the on-site commander of the lifting equipment, and the crane driver is responsible for controlling the movement of the boom in six directions including front, rear, left, right, up and down. The on-site commander is the eyes of the driver, and the driver realizes fine control of the crane boom through the on-site commander to achieve more efficient and precise hoisting work; During the working process, the focus of observation is often somewhat different, and the angle and distance of observation are also limited. Therefore, it happens from time to time that the boom collides with other objects, especially in the power industry. Or colliding with a charged high-voltage overhead line is very dangerous, ranging from causing leakage tripping, to causing short circuits, large-scale power outages, and casualties.

Invention content:

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a crane boom that can effectively reduce the number of times the boom of the crane collides with obstacles or other equipment, improve the working efficiency of the crane, and reduce the safety accidents of the crane. Anti-mistouch wireless reminder device.

The technical scheme that the present invention takes for solving technical problems is:

A crane arm anti-mis-touch wireless reminder device, including a mechanical casing, an MCU main control circuit and a power supply circuit, the MCU main control circuit and a power supply circuit are arranged inside the mechanical casing, and an ultrasonic measuring circuit is connected to the MCU main control circuit. distance circuit, wireless transmission circuit, system protection circuit and display and alarm circuit, the power circuit includes a charging circuit, a battery and a step-down circuit, and the power circuit is connected to the MCU main control circuit and its connecting circuit.

The MCU main control circuit is connected to the receiving terminal through the wireless transmission circuit, and the receiving terminal is provided with a display screen and an alarm. The MCU main control circuit adopts an industrial-grade single-chip microcomputer, which can complete a series of information calculations and Functions such as judging, reading and storing data, receiving and sending commands; the wireless transmission circuit adopts a 433MHZ micro-power wireless transmission circuit, and the effective transmission distance is greater than 800 meters. The wireless transmission circuit is the main control of the MCU The hub for information exchange between the circuit and the receiving terminal, completes the issuing of commands (device parameter setting, testing, etc.), data uploading (parameter uploading, real-time ranging data uploading, etc.) and other work.

The ultrasonic ranging circuit adopts a piezoelectric ultrasonic ranging circuit to provide the MCU main control circuit with the distance from obstacles or equipment, and output TTL level pulse width to judge the distance from obstacles. The MCU main control circuit real-time The ultrasonic ranging circuit is triggered to emit ultrasonic waves to measure the distance from obstacles. The ultrasonic ranging circuit measures a distance of 0.01m to 10.50m, and the ranging accuracy is ±0.3cm.

The power supply circuit adopts high-power lithium battery charging and discharging management technology, and the battery in the power supply circuit adopts two 4.2V5000mA polymer physical batteries connected in series to generate 8.4V5000mA power supply.

The system protection circuit is provided with a power monitoring chip of a watchdog, which is mainly responsible for power-on reset, anti-crash, and anti-program running monitoring. The MCU main control circuit will send a reset level to reset the MCU main control circuit.

The display and alarm circuit is provided with two LED lamps and a buzzer alarm circuit. When an event occurs, the buzzer will sound an alarm. When the MCU main control circuit is successfully initialized, the LED lamp connected to it will be lit. If the device is in the charging state, the LED lamp connected to it will be lit, and the display and alarm circuit has the minimum safe distance alarm function between the boom and the obstacle.

The positive beneficial effect of the present invention is:

1. The present invention has the function of ultrasonic detection of the distance between the obstacle and the boom and the alarm function according to the minimum safe distance between the boom and the obstacle. It can measure the distance between each position of the crane boom and the obstacle in real time according to the actual application environment. The distance between the booms will be sent to the receiving terminal in the cab in a timely manner when the boom exceeds the minimum safe distance, and an alarm display will be issued to remind the driver to pay attention to the unsafe position of the boom, so that the driver can correct and control the boom, reducing and avoiding accidents. Hidden danger.

2. The invention not only integrates technologies such as ultrasonic distance measurement, wireless transmission, battery charging and management, and single-chip microcomputer control, but also has a small size and is easy to carry and install. The staff can install the device at a position where the boom used is prone to collision In all directions, it has very good practicability.

3. The present invention is an auxiliary accessory of the crane, which can effectively reduce the impact of the crane boom on obstacles.

Obstacles or other equipment can improve the working efficiency of the crane, reduce the safety accidents of the crane, improve the safety factor in the working process, reduce the input of manpower and material resources, and have good economic benefits.

Description of drawings:

Fig. 1 is a logical structural block diagram of the crane boom anti-mistouch wireless reminder device of the present invention;

Fig. 2 is a connection block diagram of the MCU main control circuit and the receiving terminal in the present invention.

detailed description:

Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further explained and illustrated:

See Figure 1: In the figure, 1-mechanical casing, 2-MCU main control circuit, 3-ultrasonic distance measuring circuit, 4-wireless transmission circuit, 5-system protection circuit, 6-display and alarm circuit, 7-power supply circuit, 8-charging circuit, 9-battery, 10-step-down circuit, 11-receiving terminal.

Embodiment: A wireless reminder device for crane arm anti-mis-touch, comprising a mechanical casing 1, an MCU main control circuit 2 and a power supply circuit 7, the mechanical casing 1 is provided with an MCU main control circuit 2 and a power supply circuit 7, and the MCU main control circuit 2 is connected with ultrasonic ranging circuit 3, wireless transmission circuit 4, system protection circuit 5 and display and alarm circuit 6, power circuit 7 includes charging circuit 8, battery 9 and step-down circuit 10, power circuit 7 and MCU main control circuit 2 and its connecting circuit connection.

The MCU main control circuit 2 is connected with the receiving terminal 11 through the wireless transmission circuit 4, and the receiving terminal 11 is provided with a display screen and an alarm. function of reading and storing, receiving and sending commands; the wireless transmission circuit 4 adopts a 433MHZ micro-power wireless transmission circuit, and the effective transmission distance is greater than 800 meters. The wireless transmission circuit 4 is the MCU main control circuit 2 and the receiving terminal 11. The hub of information exchange, completes the issuing of commands (device parameter setting, testing, etc.), data uploading (parameter uploading, real-time ranging data uploading, etc.) and other work.

Ultrasonic ranging circuit 3 adopts piezoelectric ultrasonic ranging circuit to provide MCU main control circuit 2 with the distance from obstacles or equipment, output TTL level pulse width to judge the distance from obstacles, MCU main control circuit 2 triggers in real time The ultrasonic distance measuring circuit 3 emits ultrasonic waves to measure the distance from obstacles. The distance measured by the ultrasonic distance measuring circuit is 0.01m~10.50m, and the ranging accuracy is ±0.3cm.

The power supply circuit 7 adopts high-power lithium battery charging and discharging management technology, and the battery in the power supply circuit 7 adopts two 4.2V5000mA polymer physical batteries connected in series to generate 8.4V5000mA power supply.

The system protection circuit 5 is provided with a watchdog power monitoring chip, which is mainly responsible for the operation monitoring work of power-on reset, anti-crash, and anti-program runaway. The MCU main control circuit 2 will send a reset level to reset the MCU main control circuit 2 .

The display and alarm circuit 6 is provided with two LED lamps and a buzzer alarm circuit. When an event occurs, the buzzer will sound an alarm. When the MCU main control circuit 2 is successfully initialized, the LED lamp connected to it will be lit. If the device is in the charging state, the LED lamp connected to it will be lighted, and the display and alarm circuit 6 has the minimum safe distance alarm function between the boom and the obstacle.

When working, install the device on the boom of the crane, and the device will control the ultrasonic ranging circuit 3 through the MCU main control circuit 2 to measure the distance between each position of the crane boom and obstacles in real time. If the minimum safe distance is exceeded, Then, the alarm display is carried out through the display and alarm circuit 6, and then the position where the boom exceeds the minimum safe distance is sent to the cab receiving terminal 11 in time through the wireless transmission circuit 4, and the system protection circuit 5 can monitor the MCU main control circuit 2 to prevent the Its program runs away or crashes, and the power supply circuit 7 will supply power to the whole device.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to Within the scope of protection of the technical solutions of the present invention.

Claims (5)

1. a kind of crane arm mistaken collision preventing wireless reminding device, including mechanical cover, MCU governor circuit and power circuit, its Feature is：It is provided with MCU governor circuit and power circuit in described mechanical cover, described MCU governor circuit is connected with ultrasonic Ripple range-measuring circuit, wireless transmission circuit, system protection circuit and display and warning circuit, described power circuit includes the electricity that charges Road, battery and reduction voltage circuit, described power circuit and described MCU governor circuit and its be connected circuit and connect.

2. crane arm mistaken collision preventing wireless reminding device according to claim 1, is characterized in that：Described MCU master control electricity Road is connected with receiving terminal by described wireless transmission circuit, and described wireless transmission circuit adopts the micro power consumption wireless of 433MHZ to pass Transmission of electricity road.

3. crane arm mistaken collision preventing wireless reminding device according to claim 1, is characterized in that：Described ultrasonic ranging Circuit adopts piezoelectric ultrasonic range-measuring circuit, and measurement distance is 0.01m ~ 10.50m, and range accuracy is ± 0.3cm, output side Formula is the output of Transistor-Transistor Logic level pulsewidth.

4. crane arm mistaken collision preventing wireless reminding device according to claim 1, is characterized in that：Described power circuit is adopted With high-power lithium battery charging and discharging management technique, described MCU governor circuit is using the single-chip microcomputer of technical grade.

5. crane arm mistaken collision preventing wireless reminding device according to claim 1, is characterized in that：Described system protection electricity The power monitoring chip of house dog is provided with road, described display and warning circuit are provided with LED and buzzer warning electricity Road.