CN105548818B - A kind of low-voltage network broken string inspection device - Google Patents

Abstract

The invention relates to a low-voltage distribution network disconnection inspection device, which is characterized in that the inspection device includes a starting module, a power module, a pressure sensing module, an infrared sensing module, a sliding module and a wireless communication module; the input of the starting module connected to the end of the power line of the low-voltage distribution network, and the output end is connected to the input end of the power module; the power module supplies power for the pressure sensing module, infrared sensing module, sliding module and wireless communication module; the pressure sensing module and the infrared The output terminals of the sensing module are all connected to the input terminals of the wireless communication module; the sliding module includes a pulley drive motor, a pulley transmission structure, a guide wire and a collar; the starting module includes a voltage sensor, a first A/D conversion circuit, The first single-chip microcomputer, the signal generator and the first pressure sensor; the primary side of the voltage sensor is connected to the end of the power line between the two towers of the low-voltage distribution network, and the secondary side of the voltage sensor is connected to the input of the first A/D conversion circuit end.

Description

A low-voltage distribution network disconnection inspection device

technical field

The invention relates to the technical field of line inspection of a low-voltage distribution network, in particular to a line inspection device for a low-voltage distribution network.

Background technique

The low-voltage distribution network is an important part of the power grid, and it is also a part closely connected with the user side. As the current smart grid continues to improve and various parts become more and more intelligent, the development of the low-voltage distribution network needs to be optimized, especially When a disconnection fault occurs in the low-voltage distribution network, most of the time, the line inspectors manually inspect the entire line, which is time-consuming and laborious. This not only causes unnecessary waste of human resources, but also delays the time for troubleshooting. Huge losses have been caused to the power grid and the people. Aiming at the aspect of intelligent identification of power grid faults, people continue to conduct research. The Chinese patent application number 2015100111691 discloses an automatic fault detection system for power lines. The system uses a groove hole composed of an upper groove and a lower groove to pass through The power line is fixed on the power line. The disadvantage is that when the power line breaks, the system will fall to the ground due to gravity, causing a certain loss, and the system cannot detect the zero line break fault. analyze.

Contents of the invention

Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a low-voltage distribution network disconnection inspection device (hereinafter referred to as the inspection device), which is based on infrared temperature sensing technology The device for detecting line disconnection realizes the automatic inspection of power line disconnection faults, avoids unnecessary troubles caused by manual line inspection, and creatively solves the automatic inspection caused by zero line disconnection problems, thus greatly improving the inspection efficiency of disconnection faults.

The present invention solves the above technical problems by taking the following technical solutions:

A low-voltage distribution network disconnection inspection device, characterized in that the inspection device includes a starting module, a power module, a pressure sensing module, an infrared sensing module, a sliding module and a wireless communication module; the input end of the starting module is connected to The end of the power line between the two towers of the low-voltage distribution network, the output end is connected to the input end of the power module; the power module supplies power for the pressure sensing module, infrared sensing module, sliding module and wireless communication module; the pressure sensing module and the output end of the infrared sensing module are connected to the input end of the wireless communication module; the sliding module includes a pulley drive motor, a pulley transmission structure, a guide line and a collar;

The starting module includes a voltage sensor, a first A/D conversion circuit, a first single-chip microcomputer, a signal generator and a first pressure sensor; the primary side of the voltage sensor is connected to the end of the power line between the two towers of the low-voltage power distribution network , the secondary side of the voltage sensor is connected to the input terminal of the first A/D conversion circuit, the output terminal of the first A/D conversion circuit is connected to the input terminal of the first single-chip microcomputer, and the output terminal of the first single-chip microcomputer is connected to the signal generator; A pressure sensor is fixed at the end of the power line between the two towers, and one end is connected to the first single-chip microcomputer;

The power module includes a solar cell, a relay, and a signal receiver; one end of the signal receiver is connected to the signal generator, and the other end is connected to a relay, and the relay is simultaneously connected to the solar cell and the pulley drive motor on the sliding module;

The pressure sensing module includes a second pressure sensor, a second A/D conversion circuit and a second single-chip microcomputer, the secondary side of the second pressure sensor is connected to the second A/D conversion circuit, and the other side of the second A/D conversion circuit The side is connected to the input end of the second single-chip microcomputer, and the output end of the second single-chip microcomputer is connected to the wireless communication module; the pressure sensing module is powered by the solar battery;

The infrared sensing module includes a non-contact infrared temperature sensor, a third A/D conversion circuit, a third single-chip microcomputer, a drive circuit, a stepping motor and a mechanical arm; the power supply side of the non-contact infrared temperature sensor is connected to the relay in the power module, The output end of the non-contact infrared temperature sensor is connected to the input end of the third A/D conversion circuit, the output end of the third A/D conversion circuit is connected to the input end of the third single-chip microcomputer, and the output end of the third single-chip microcomputer is connected to the input of the drive circuit terminal, the output terminal of the drive circuit is connected with the input terminal of the stepping motor, and the output terminal of the stepping motor is connected with the mechanical arm; the pin of the third single-chip microcomputer is connected with the wireless communication module;

The device also includes a device body, a telescopic structure and a supporting base. A pulley transmission structure is installed at the bottom of the device body. The supporting base is installed in the middle of the device body, on the upper surface of the device body, and on both sides of the supporting base. Both are laid with solar cells; on the upper part of the support base are provided signal receivers, telescopic structures and mechanical arms, non-contact infrared temperature sensors are fixed on the mechanical arms, and the mechanical arms are driven by stepping motors; ring, and the collar is placed on the guide wire;

The second pressure sensor is fixed at the contact point between the collar and the guide wire; the telescopic structure includes an upper part, a middle part and a lower part, the middle part is a ring buckle connecting rod, and the ring buckle connecting rod is vertically provided with Buckle groove, the upper end of the upper part is connected with the collar, the lower part of the upper part is provided with the upper buckle, and the upper part of the lower part is provided with the lower buckle, and the upper buckle and the lower buckle are connected through the buckle connecting rod fixed in the buckle groove;

The pulley transmission structure includes a pulley and a conveyor belt. The pulley is provided with a roller and a roller. The rollers are evenly strung in the roller, and the bottom of the roller is fastened by bolts; one end of the conveyor belt is connected to the roller in the pulley through a pinion. , the other end is connected with the pulley drive motor through another large gear.

Compared with the prior art, the outstanding substantive features of the present invention are:

1) Make full use of solar energy, save energy and protect the environment. The present invention adopts solar cells, utilizes solar cells to absorb sunlight, and directly or indirectly converts solar radiation energy into electrical energy through photoelectric effect or photochemical effect, and provides power for the entire device, avoiding the need Electricity, which causes certain interference to the operation of the power line, in the present invention, the movable solar cells are arranged on the horizontal plane of the device body, which is not only conducive to good collection of solar energy, but also conducive to the distribution of the entire device. When the light source is sufficient, let the solar cell be attached to the horizontal surface of the device body, and when the solar light source is insufficient, let it move downward and protect it with a protective structure, which can effectively prolong the service life of the solar cell.

2) Automatic inspection The combination of the voltage sensor and the relay in the starting module of the present invention can make the distribution network detect the change of the voltage at the first time when a fault occurs, and trigger the relay to start the inspection device, and use the voltage sensor to The voltage change of the three-phase power distribution line is sensed, and the start time of the inspection device is determined according to the voltage change signal, which avoids the waste of resources caused by timing the inspection device and realizes the automatic start of the inspection device.

3) The signal is reliable. The present invention adopts the combination of the pulley and the guide wire. During the operation of the inspection device, the pulley slides on the power line driven by the pulley drive motor and the gear. The guide wire can not only assist the running direction of the inspection device, but also It can control the balance of the inspection device, and it can also prevent the inspection device from falling due to the loss of support when the zero line breaks down. In addition, it adopts the structure combining the guide wire and the collar. The second pressure sensor is installed at the top contact of the zero line, so that when the zero line breaks down, the gravity of the inspection device is all borne by the guide line, and the second pressure sensor feels the sudden increase in the pressure of the inspection device on the guide line. Thereby it is judged whether the zero line is disconnected, and the zero line disconnection signal is sent back to the control personnel through the second A/D conversion circuit, the second single-chip microcomputer and the wireless communication module, thereby ensuring the reliability of signal transmission.

4) The accuracy of data collection is high. The present invention uses a non-contact infrared temperature sensor to collect the operating conditions of the power line during the operation of the inspection device. The collected signals are passed through the third A/D conversion circuit, the third single-chip microcomputer and wireless communication. The module is sent back to the control center. At the same time, during the operation of the inspection device, due to environmental factors (such as wind factors) and the suspension of the line itself, the inspection device can adjust the angle of the mechanical arm through a stepping motor to achieve non-contact The accurate collection of data by the infrared temperature sensor ensures reliable collection of the operating conditions of the power line.

Significant progress of the present invention is:

The invention has simple structure and reliable operation, and provides an intelligent and convenient low-voltage distribution network disconnection inspection device for the complex problem of line inspection of power lines in low-voltage distribution networks. The invention uses voltage sensors to accurately The voltage change of the three-phase power line is accurately sensed, and the relay is triggered in real time, so that the inspection device is started, which avoids the waste of resources caused by regular start-up and the shortcoming of not being able to detect disconnection faults in time; the present invention uses solar energy to supply power to the entire device, reducing The unnecessary interference caused by the lead-in from the power line is avoided, and the solar battery is laid on the body of the inspection device, which ensures the reliable absorption of solar energy and the reliability of power supply of the entire inspection device; the present invention uses photoresistors and protection The structure protects the solar cells at night and when solar energy is insufficient, which can prolong the life of the solar panels; the invention uses pulleys, guide wires and collars to control the advancement of the inspection device, which can effectively control the advancement of the inspection device direction and the overall balance of the inspection device; the invention uses a non-contact infrared temperature sensor to collect the operation of the power line, avoiding the shortcomings of video acquisition at night to supplement the light, and increasing the reliability of the inspection device; the present invention A stepping motor is used to automatically adjust the angle of the mechanical arm connected to the non-contact infrared temperature sensor, and judge whether the power line is disconnected or not according to the signal of the non-contact infrared temperature sensor. When a disconnection fault occurs in the line, the line fault can be accurately judged , the control personnel can be notified in time through the wireless communication module, which reduces the workload of the line patrol personnel and can save manpower and material resources; the present invention uses the second pressure sensor to judge whether the zero line is broken. Since the zero line is broken, the inspection device All the weight is applied on the guide line, the second pressure sensor can accurately judge the running state of the zero line, and quickly reflect the fault situation to the control personnel through the wireless communication module; the present invention uses the first pressure sensor to judge whether the inspection device is patrolling After the inspection is completed, when the inspection device moves into the docking base, the pressure sensor detects the pressure of the inspection device on it, and transmits the signal to the first single-chip microcomputer, and the first single-chip microcomputer sends a signal to stop the operation of the inspection device through the signal generator, and the signal receiver When the signal is received, the trigger relay is disconnected, and the inspection device stops running.

Description of drawings

Fig. 1 is a block diagram of the overall structure of an embodiment of the low-voltage distribution network disconnection inspection device of the present invention.

Fig. 2 is a three-dimensional structural schematic diagram of an embodiment of the low-voltage distribution network disconnection inspection device of the present invention.

Fig. 3 is a three-dimensional structural schematic diagram of a pulley transmission structure 51 of an embodiment of the low-voltage distribution network disconnection inspection device of the present invention.

Fig. 4 is a three-dimensional structural schematic diagram of the telescopic structure 7 of an embodiment of the low-voltage distribution network disconnection inspection device of the present invention.

Fig. 5 is a schematic diagram of the installation structure of the protection structure 24 of an embodiment of the low-voltage distribution network disconnection inspection device of the present invention.

In the figure, 1-starting module, 2-power supply module, 3-pressure sensing module, 4-infrared sensing module, 5-sliding module, 6-wireless communication module, 7-telescopic structure, 8-support base, 9-device body ; 11-voltage sensor, 12-the first A/D conversion circuit, 13-the first single-chip microcomputer, 14-signal generator, 15-the first pressure sensor; 21-solar battery, 22-relay, 23-signal receiver, 24-protection structure; 31-the second pressure sensor, 32-the second A/D conversion circuit, 33-the second single-chip microcomputer; 41-non-contact infrared temperature sensor, 42-the third A/D conversion circuit, 43-the first Three single-chip microcomputers, 44-drive circuit, 45-stepping motor, 46-mechanical arm, 51-pulley transmission structure, 52-collar, 53-pulley drive motor, 54-guide line, 511-pulley, 512-conveyor belt; 701 -Small roller, 702-top buckle, 703-ring groove, 704-ring connecting rod, 705-bottom buckle; 2401-transmission belt, 2402-reel, 2403-protective cover, 2404-reel, 2405- Small pulley, 2406-telescopic belt, 2407-sleeve shaft.

Detailed ways

The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but these are not intended to limit the scope of protection of the claims of the present application.

The low-voltage distribution network disconnection inspection device of the present invention (referred to as the inspection device, see Figure 1) includes a starting module 1, a power module 2, a pressure sensing module 3, an infrared sensing module 4, a sliding module 5 and a wireless communication module 6; The input end of the starting module 1 is connected to the power line end of the low-voltage power distribution network, and the output end is connected to the input end of the power module 2; the power module 2 is a pressure sensing module 3, an infrared sensing module 4, a sliding module 5 and a wireless The communication module 6 supplies power; the output ends of the pressure sensing module 3 and the infrared sensing module 4 are all connected to the input end of the wireless communication module 6; the sliding module 5 includes a pulley drive motor 53, a pulley transmission structure 51, a guide wire 54 and collar 52;

The starting module 1 includes a voltage sensor 11, a first A/D conversion circuit 12, a first single-chip microcomputer 13, a signal generator 14 and a first pressure sensor 15; the primary side of the voltage sensor 11 is connected to the power of the low-voltage power distribution network At the end of the line, the secondary side of the voltage sensor 11 is connected to the input terminal of the first A/D conversion circuit 12, the output terminal of the first A/D conversion circuit 12 is connected to the input terminal of the first single-chip microcomputer 13, and the output terminal of the first single-chip microcomputer 13 is connected to Signal generator 14; The first pressure sensor 15 is fixed at the end of the power line between the two towers, and one end is connected with the first single-chip microcomputer 13;

The power module 2 includes a solar battery 21, a relay 22 and a signal receiver 23; one end of the signal receiver 23 is connected to the signal generator 14, and the other end is connected to the relay 22, and the relay 22 is connected to the solar battery 21 and the sliding module 5 at the same time. The pulley drive motor connection on the

The pressure sensing module 3 includes a second pressure sensor 31, a second A/D conversion circuit 32 and a second single-chip microcomputer 33, the secondary side of the second pressure sensor 31 is connected to the second A/D conversion circuit 32, and the second A/D conversion circuit 32 is connected to the second A/D conversion circuit 32. The other side of the D conversion circuit 32 is connected to the input terminal of the second single-chip microcomputer 33, and the output terminal of the second single-chip microcomputer 33 is connected to the wireless communication module 6; the pressure-sensitive module 3 is powered by the solar battery 21;

Described infrared sensing module 4 comprises non-contact infrared temperature sensor 41, the 3rd A/D conversion circuit 42, the 3rd single-chip microcomputer 43, drive circuit 44, stepping motor 45 and mechanical arm 46; Non-contact infrared temperature sensor 41 power supply The side is connected to the relay 22 in the power module, the output end of the non-contact infrared temperature sensor 41 is connected to the input end of the third A/D conversion circuit 42, and the output end of the third A/D conversion circuit 42 is connected to the input of the third single-chip microcomputer 43 end, the output end of the third single-chip microcomputer 43 is connected to the input end of the drive circuit 44, the output end of the drive circuit 44 is connected with the input end of the stepping motor 45, and the output end of the stepping motor 45 is connected with the mechanical arm 46; The third single-chip microcomputer 43 The pin is connected with the wireless communication module 6;

The device also includes a device body 9, a telescoping structure 7 and a support base 8, a pulley transmission structure 51 is installed at the bottom of the device body 9, and the support base 8 is installed in the middle of the device body, on the upper surface of the device body 9, And be positioned at the both sides of support base 8 and all lay solar battery 21; Be provided with signal receiver 23, telescopic structure 7 and mechanical arm 46 on the top of support base 8, non-contact infrared temperature sensor 41 is fixed on the mechanical arm 46, mechanical The arm 46 is driven by a stepping motor 45; a collar 52 is installed on the upper end of the telescopic structure 7, and the collar 52 is set on the guide wire 54;

The second pressure sensor 31 (see Fig. 4) is fixed at the contact point of the collar 52 and the guide wire 54; The buckle connecting rod 704 is provided with a buckle groove 703 along the vertical direction, the upper end of the upper part is connected with the collar, the lower part of the upper part is provided with the upper buckle 702, and the upper part of the lower part is provided with the lower buckle 705, and the connecting rod is connected through the buckle. 704 fixes the upper buckle 702 and the lower buckle 705 in the buckle groove 703; adjust the height of the entire telescopic structure 7 by adjusting the position of the upper buckle 702 and the lower buckle 705 in the buckle groove 703, and the specific height is according to Specific power line condition regulation;

Described pulley transmission structure 51 (referring to Fig. 3) comprises pulley 511 and conveyer belt 512, and described pulley 511 is provided with roller shaft and roller, and roller is evenly strung in roller, and just below roller axle is fastened by bolt; One end of conveyer belt 512 The pinion is connected with the roller in the pulley 511, and the other end is connected with the pulley drive motor 53 through another large gear; the pulley drive motor 53 converts electric energy into kinetic energy to drive the large gear to rotate, and the conveyor belt 512 is driven by the large gear. Start to rotate, and drive the pinion to rotate, and the roller connected to the pinion starts to rotate at the same time, and at the same time, the roller fixed on the roller starts to rotate; use bolts directly below the outer wall of the pulley according to the zero line set by the actual pulley 511 Adjust the size of the roller and the pulley in the cross section, so that the roller fits on the inner wall of the pulley and slides. The roller is installed inside the pulley, one end is attached to the inner wall of the pulley, and the other end is attached to the power line. According to the actual situation, the roller can be adjusted by bolts according to the cross section of the zero line, so that the roller can be adjusted to a most suitable position.

A further feature of the present invention is that the solar cell 21 is provided with a protective structure 24; the protective structure 24 (see FIG. 5 ) is arranged on both sides of the support base 8, and is located on the top of the solar cell 21, including a transmission belt 2401, Roller 2402, protective cover 2403, small pulley 2405, telescopic belt 2406 and sleeve shaft 2407; below the solar cell 21, a small pulley 2405 is fixedly installed. The height of the wheel 2402 is equal to the level of the device body 9. On the edge side of the device body 9 and at the same height as the reel 2402, a sleeve shaft 2407 and a reel 2404 are installed. Transmission belt 2401 is installed between them, and telescopic belt 2406 is installed between the inner shaft of small pulley 2405 and sleeve shaft 2407, and protective cover 2403 is rolled on the reel 2404, and reel 2402 and sleeve shaft 2407 pass through protective structure motor (not marked in the figure) out) drive.

The present invention utilizes solar cells to convert solar radiation energy directly or indirectly into electric energy through photoelectric effect or photochemical effect to provide power for the whole device, while considering that solar cells are in a non-working state at night and when solar energy is insufficient, at this time according to the photoresistor The function of using the protection structure to intelligently protect the solar cells can effectively prolong the life of the solar panels. When the solar light source is not sufficient, the resistance of the photoresistor is very large, and the protection structure automatically lowers the solar cells to the level of the device body and close the protective cover to avoid unnecessary damage when the solar cell is not working; when the solar light source is sufficient, the resistance of the photoresistor is small, and the protective structure automatically raises the solar cell to the level of the device body. Start charging the solar battery.

The working principle and the process of concrete protective structure 24 are:

When the solar light source is insufficient at night or in cloudy days, under the action of the photoresistor, a signal is sent to the protective structure motor, so that the protective structure motor drives the sleeve shaft 2407 and the reel 2402 to start to rotate counterclockwise at the same time, and the reel 2404 is on the sleeve shaft 2407 With the rotation of the reel 2402, the protective cover 2403 rolled on the reel 2404 begins to cover the entire horizontal surface under the traction of the transmission belt 2401, and at the same time, is wound between the sleeve shaft 2407 and the small pulley 2405 The stretchable belt 2406 also begins to stretch slowly, driving the solar battery 21 to move downward.

On the contrary, when the solar light source is sufficient, under the action of the photoresistor, a signal is sent to the protective structure motor, so that the protective structure motor drives the sleeve shaft 2407 and the reel 2402 to start to rotate clockwise at the same time, and the reel 2404 is driven by the sleeve shaft 2407 Start to rotate, along with the rotation of the reel 2402, the protective cover 2403 on the reel 2404 begins to shrink in the reel 2404 under the traction of the transmission belt 2401, and at the same time, the telescopic belt wrapped between the sleeve shaft 2407 and the small pulley 2405 2406 also begins to shrink slowly, driving the solar cell 21 to move upwards, so that the solar cell 21 returns to the horizontal plane.

A further feature of the present invention is that the model of the driving circuit 44 is ULN2003.

A further feature of the present invention is that a slidable small roller 701 is provided inside the collar 52. One side of the small roller is attached to the inner wall of the collar, and the other side is attached to the guide line. When the inspection device starts to slide , through the contact between the small roller and the guide line, the frictional force can be reduced, which is beneficial to the running of the entire inspection device, and avoids the situation that the inspection device slides and is blocked during work.

The inspection steps of the low-voltage distribution network disconnection inspection device of the present invention are: the pulley 511 is set on the zero line of the distribution network, and the guide line is arranged above the zero line through the telescopic structure 7. The height of the telescopic structure 7 can be adjusted according to Actual self-adjustment is required;

In the starting module 1, the voltage sensor 11 senses the voltage change of the power line, converts the collected analog signal into a digital signal through the first A/D conversion circuit 12, and passes it to the first single-chip microcomputer 13, and the first single-chip microcomputer 13 transmits the signal to The signal generator 14, the signal receiver 23 in the power module 2 receives the signal transmitted by the signal generator 14, and the trigger relay 22 is closed, so that the pulley drive motor 53 is connected to the solar battery 21 and starts to work. The pulley drive motor passes through the pulley transmission structure 51 drives the pulley 511 to move, and the inspection device starts to travel. Since the orientation of the guide line is determined, the inspection device can run in a fixed direction; at the same time, the second pressure sensor 31 on the sensing module 3 starts to function, and the second pressure sensor 31 The collected analog signal is converted into a digital signal through the second A/D conversion circuit 32, and passed to the second single-chip microcomputer 33. When the zero line where the inspection device was located was disconnected, the bottom of the inspection device lost support, and the inspection device's The whole weight will be borne by the guide wire, the second pressure sensor collects the sudden change of the signal, the second single-chip microcomputer 33 automatically analyzes the digital signal sent by the second A/D conversion circuit 32, and transmits the zero line fault signal through the wireless communication module 6. To the control center; when the inspection device was in normal operation, the non-contact infrared temperature sensor 41 on the infrared sensing module 4 collected the operating conditions of the power line, and when the signal collected by the non-contact infrared temperature sensor 41 was non-full-phase operation (a phase or two-phase disconnection), the third single-chip microcomputer 43 drives the stepper motor 45 to adjust the angle of the mechanical arm 46, and the non-contact infrared temperature sensor 41 continues to collect signals. degree), if the signal collected by the non-contact infrared temperature sensor 41 is still not in full-phase operation (one phase or two phases are disconnected), the third single-chip microcomputer 43 transmits the corresponding abnormal signal to the control center through the wireless communication module 6 , the inspection device docking base is set at the end of the power line between the two poles and towers, and the first pressure sensor is installed on the docking base. When the inspection device enters the docking base, the first pressure sensor 15 detects the inspection device. Pressure, the signal is passed to the first single-chip microcomputer 13, the first single-chip microcomputer sends the inspection device stop operation signal through the signal generator, the signal receiver receives the signal, the trigger relay is disconnected, and the inspection device stops running.

The wireless communication module 6 in the present invention adopts wireless communication equipment, and the wireless communication equipment transmits the actual operating conditions of the power line to the control center according to the signals collected by the inspection device.

Finally, it should be noted that the descriptions of the above embodiments are more specific and detailed, but are only used to illustrate the technical solutions of the present invention rather than limit them. It should be noted that those skilled in the art can make appropriate modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the claims of the present invention.

What is not mentioned in the present invention is applicable to the prior art.

Claims (2)

1. A low-voltage distribution network disconnection inspection device is characterized in that the inspection device includes a starting module, a power supply module, a pressure sensing module, an infrared sensing module, a sliding module and a wireless communication module; the input terminal of the starting module Connected to the end of the power line between the two towers of the low-voltage distribution network, the output end is connected to the input end of the power supply module; the power supply module supplies power for the pressure sensing module, infrared sensing module, sliding module and wireless communication module; the sensing The output ends of the pressure module and the infrared sensing module are connected to the input end of the wireless communication module; the sliding module includes a pulley drive motor, a pulley transmission structure, a guide line and a collar; The starting module includes a voltage sensor, a first A/D conversion circuit, a first single-chip microcomputer, a signal generator and a first pressure sensor; the primary side of the voltage sensor is connected to the end of the power line of the low-voltage power distribution network, and the two ends of the voltage sensor The secondary side is connected to the input terminal of the first A/D conversion circuit, the output terminal of the first A/D conversion circuit is connected to the input terminal of the first single-chip microcomputer, and the output terminal of the first single-chip microcomputer is connected to the signal generator; the first pressure sensor is fixed on At the end of the power line between the two towers, one end of the first pressure sensor is connected to the first single-chip microcomputer; The power module includes a solar cell, a relay, and a signal receiver; one end of the signal receiver is connected to the signal generator, and the other end is connected to a relay, and the relay is simultaneously connected to the solar cell and the pulley drive motor on the sliding module; The pressure sensing module includes a second pressure sensor, a second A/D conversion circuit and a second single-chip microcomputer, the secondary side of the second pressure sensor is connected to the second A/D conversion circuit, and the other side of the second A/D conversion circuit The side is connected to the input end of the second single-chip microcomputer, and the output end of the second single-chip microcomputer is connected to the wireless communication module; the pressure sensing module is powered by the solar battery; The infrared sensing module includes a non-contact infrared temperature sensor, a third A/D conversion circuit, a third single-chip microcomputer, a drive circuit, a stepping motor and a mechanical arm; the power supply side of the non-contact infrared temperature sensor is connected to the relay in the power module, The output end of the non-contact infrared temperature sensor is connected to the input end of the third A/D conversion circuit, the output end of the third A/D conversion circuit is connected to the input end of the third single-chip microcomputer, and the output end of the third single-chip microcomputer is connected to the input of the drive circuit terminal, the output terminal of the drive circuit is connected with the input terminal of the stepping motor, and the output terminal of the stepping motor is connected with the mechanical arm; the pin of the third single-chip microcomputer is connected with the wireless communication module; The inspection device also includes a device body, a telescopic structure and a supporting base, and a pulley transmission structure is installed at the bottom of the device body, and the supporting base is installed in the middle of the device body, on the upper surface of the device body, and is located Solar cells are laid on both sides; a signal receiver, a telescopic structure and a mechanical arm are arranged on the upper part of the support base, a non-contact infrared temperature sensor is fixed on the mechanical arm, and the mechanical arm is driven by a stepping motor; the upper end of the telescopic structure is installed There is a collar, and the collar is placed on the guide wire; The second pressure sensor is fixed at the contact point between the collar and the guide wire; the telescopic structure includes an upper part, a middle part and a lower part, the middle part is a ring buckle connecting rod, and the ring buckle connecting rod is vertically provided with Buckle groove, the upper end of the upper part is connected with the collar, the lower part of the upper part is provided with the upper buckle, and the upper part of the lower part is provided with the lower buckle, and the upper buckle and the lower buckle are connected through the buckle connecting rod fixed in the buckle groove; The pulley transmission structure includes a pulley and a conveyor belt. The pulley is provided with a roller and a roller. The rollers are evenly strung in the roller, and the bottom of the roller is fastened by bolts; one end of the conveyor belt is connected to the roller in the pulley through a pinion. , the other end is connected with the pulley drive motor through another large gear. 2. The low-voltage distribution network disconnection inspection device according to claim 1, wherein a protective structure is provided on the solar cell; the protective structure is arranged on both sides of the supporting base and is located on the upper part of the solar cell , including a transmission belt, a reel, a protective cover, a small pulley, a telescopic belt and a sleeve shaft; a small pulley is fixedly installed under the solar cell, and the reel is installed on both side edges of the support base, and the height of the reel is the same as The horizontal height of the device body is equal, the sleeve shaft and the reel are installed at the edge side of the device body and at the same height as the reel, the transmission belt is installed between the outer shaft of the sleeve shaft and the reel, and the small pulley and the sleeve A telescopic belt is installed between the inner shafts of the shaft, the protective cover is wound on the reel, and the reel and the sleeve are driven by a protective structure motor.