Contact network monitoring system

Abstract

The utility model relates to a contact network monitoring system, which comprises a detection box, the detection box is arranged close to the lower end of a boundary frame, a detection circuit is arranged in the detection box, the detection circuit comprises a controller, a positioning module and a communication module, the controller is in communication connection with the positioning module and the communication module, and the input end of the controller is connected with the detection module. The detection module comprises a stay wire sensor, a temperature sensor and an attitude sensor; a hoop is arranged on the balance weight, the hoop is fixed with a pull rope of the pull wire sensor, and an attitude sensor is fixedly arranged on the balance weight; the controller is further connected with a power circuit, and the power circuit comprises a battery and a solar charging module. According to the utility model, the stay wire sensor is adopted to collect the displacement change of the balance weight, the shaking influence of the compensation rope and the balance weight caused by external force is eliminated, and the communication module and the positioning module are additionally arranged to provide a hardware basis for realizing real-time online detection.

Description

Technical Field

[0001] The utility model relates to the technical field of railway contact network system maintenance, in particular to a contact network monitoring system. Background Art

[0002] The overhead contact system is subject to erosion by natural environments such as wind, frost, rain, and snow all year round. The electrified equipment is arranged in the open air along the line, and the working environment is harsh. It is greatly affected by natural disasters such as wind, snow, salinity, and fog. In particular, the overhead contact anchor device, whose working state will directly affect the dynamic characteristics and current-collecting quality of the pantograph and the overhead contact network, and will affect driving safety in the event of a fault. The main cause of compensator failure is the breakage of the compensation rope of the overhead contact anchor device or the jamming of the weight, which will cause great interference to normal operation and seriously affect the operational safety of the electrified railway.

[0003] At present, the overhead line system mainly relies on manual inspection to check for hidden dangers. There are problems such as long inspection cycle, high labor intensity, incomplete inspection and lack of timeliness, and failure to warn of sudden accidents in advance.

[0004] With the rapid development of sensor and electronic technology, the state monitoring technology of the overhead contact system will also have great progress. For example, a distance measuring sensor is set to detect the distance between the weight and the ground and the distance between the weight and the overhead contact network to determine whether the anchoring device is operating normally. However, due to the shaking of the compensation rope and the weight, the detection is not accurate.

[0005] Therefore, it is urgent to improve the contact network monitoring equipment and improve the detection accuracy. Summary of the invention

[0006] The utility model solves the problem of low detection accuracy of the existing anchor device status monitoring system. A contact network monitoring system is proposed, which is equipped with a detection box, a controller and a detection module, and uses a pull-wire sensor to collect the displacement change of the weight, eliminating the shaking influence of the compensation rope and the weight caused by external force, and also provides a communication module and a positioning module to provide a hardware basis for realizing real-time online detection.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a contact network monitoring system, including a limit frame, a weight and a compensation rope, wherein the weight is arranged between the limit frames, and the upper end of the weight is connected to the compensation rope, and also includes a detection box, which is arranged near the lower end of the limit frame, and a detection circuit is arranged in the detection box, and the detection circuit includes a controller, a positioning module and a communication module, and the controller is communicatively connected with the positioning module and the communication module, and the input end of the controller is connected with the detection module, and the detection module includes a wire sensor, a temperature sensor and a posture sensor;

[0008] A hoop is provided on the weight, the hoop is fixed to the pull rope of the pull wire sensor, and a posture sensor is fixedly provided on the weight;

[0009] The controller is also connected to a power circuit, which includes a battery and a solar charging module.

[0010] Furthermore, the detection box comprises a shell, an upper fixing frame, a lower fixing frame and a pulley block bracket, wherein one end of the upper fixing frame and the lower fixing frame is fixed to the shell, and the other end is fixed to the limit frame.

[0011] The upper fixing frame and the lower fixing frame are L-shaped plates, and the upper fixing frame and the lower fixing frame are fixed to the shell and the limit frame by bolts. The upper fixing frame and the lower fixing frame are arranged to facilitate the fixing of the detection box.

[0012] Further, a pulley block bracket is provided at the lower end of the housing, the pulley block bracket is a straight-line plate, one end of the pulley block bracket is fixed to the lower end surface of the housing, and a pulley is provided on the upper end surface of the other end of the pulley block bracket, and the pulley and the pulley block bracket are connected by bolts;

[0013] The pull rope of the pull wire sensor is fixed to the clamp and then enters the interior of the housing through a pulley, and the detection part of the pull wire sensor is fixed to the interior of the housing.

[0014] The pulley block bracket is used to install the pulley. Setting the pulley is conducive to the stable movement of the pull rope and is conducive to improving the detection accuracy of the system.

[0015] Furthermore, the shell is a trapezoidal structure with a hollow interior, and the upper end surface of the shell is an inclined surface;

[0016] The solar charging module comprises a photovoltaic panel and a charging circuit. The photovoltaic panel is fixed to the upper end surface of the shell. The charging circuit is arranged in the shell. The output end of the charging circuit is connected to the battery.

[0017] The shell is arranged in a trapezoidal structure to facilitate the photovoltaic panel to be exposed to sunlight.

[0018] Furthermore, the communication module includes a ZigBee module.

[0019] Furthermore, an AD converter is provided between the controller and the wire sensor, the input end of the AD converter is connected to the output end of the wire sensor, and the output end of the AD converter is connected to the input end of the controller;

[0020] The input end of the controller is also connected to the attitude sensor.

[0021] Furthermore, the temperature sensor includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged inside the shell, the second temperature sensor is arranged outside the shell, and the first temperature sensor and the second temperature sensor are both connected to the input end of the controller.

[0022] Furthermore, the positioning module includes a GPS module.

[0023] Through the above technical solution, the beneficial effects of the utility model are:

[0024] (1) When a fault occurs, the weight of the utility model will be displaced. When the weight of the utility model is displaced, the drawstring of the drawstring sensor will be stretched or shortened. According to the working principle of the drawstring sensor, the electrical signal output by the drawstring sensor changes with the stretching or shortening of the drawstring. The control receives the electrical signal output by the drawstring sensor. Compared with the distance measuring sensor, the detection accuracy is high.

[0025] (2) The utility model is provided with a temperature sensor and an attitude sensor. The temperature sensor detects the temperature of the working environment, and the attitude sensor detects the attitude of the weight. The detection accuracy is further improved by combining the output parameters of the pull-wire sensor, thus providing a hardware basis for judging the state of the contact network anchor device.

[0026] (3) The utility model provides a detection box to protect the hardware circuit, and provides a communication module and a positioning module to provide a hardware basis for realizing real-time online detection.

[0027] (4) The utility model uses a solar charging module to charge the battery, so that the battery can provide energy for the entire system. Frequent manual maintenance is not required, which reduces the workload of maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the structural schematic diagrams of a contact network monitoring system of the utility model;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 This is one of the electrical schematic diagrams of a contact network monitoring system of the utility model;

[0031] Figure 4 This is the second electrical schematic diagram of a contact network monitoring system of the utility model.

[0032] Figure numbers: 1 is a limit frame, 2 is a weight, 3 is a compensation rope, 4 is a controller, 5 is a positioning module, 6 is a communication module, 7 is a pull wire sensor, 8 is a temperature sensor, 9 is a posture sensor, 10 is a clamp, 11 is a solar charging module, 12 is a shell, 13 is an upper fixing frame, 14 is a lower fixing frame, 15 is a pulley block bracket, 16 is a pulley, and 17 is an AD converter. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0034] Example 1

[0035] like Figures 1 to 4 As shown, a contact network monitoring system includes a limit frame 1, a weight 2 and a compensation rope 3, wherein the weight 2 is arranged between the limit frames 1, and the upper end of the weight 2 is connected to the compensation rope 3, and is characterized in that it also includes a detection box, which is arranged near the lower end of the limit frame 1, and a detection circuit is arranged in the detection box, and the detection circuit includes a controller 4, a positioning module 5 and a communication module 6, and the controller 4 is communicatively connected with the positioning module 5 and the communication module 6, and the input end of the controller 4 is connected with the detection module, and the detection module includes a wire sensor 7, a temperature sensor 8 and a posture sensor 9;

[0036] A hoop 10 is provided on the weight 2, and the hoop 10 is fixed to the pull rope of the pull wire sensor 7, and a posture sensor 9 is fixedly provided on the weight 2;

[0037] The controller 4 is also connected to a power circuit, which includes a battery and a solar charging module 11 .

[0038] Preferably, the detection box comprises a shell 12 , an upper fixing frame 13 , a lower fixing frame 14 and a pulley bracket 15 , wherein one end of the upper fixing frame 13 and the lower fixing frame 14 are fixed to the shell 12 and the other end are fixed to the limit frame 1 .

[0039] Preferably, a pulley block bracket 15 is provided at the lower end of the housing 12, and the pulley block bracket 15 is a straight-line plate, one end of the pulley block bracket 15 is fixed to the lower end surface of the housing 12, and a pulley 16 is provided on the upper end surface of the other end of the pulley block bracket 15, and the pulley 16 and the pulley block bracket 15 are connected by bolts;

[0040] The pull rope of the pull wire sensor 7 is fixed to the clamp 10 and then enters the interior of the housing 12 through the pulley 16 , and the detection part of the pull wire sensor 7 is fixed to the interior of the housing 12 .

[0041] Preferably, the shell 12 is a trapezoidal structure with a hollow interior, and the upper end surface of the shell 12 is an inclined surface;

[0042] The solar charging module 11 includes a photovoltaic panel and a charging circuit. The photovoltaic panel is fixed to the upper end surface of the shell 12. The charging circuit is arranged in the shell 12. The output end of the charging circuit is connected to the battery.

[0043] The charging circuit includes a BQ24210 charging chip.

[0044] Preferably, the communication module 6 includes a ZigBee module.

[0045] Preferably, an AD converter 17 is provided between the controller 4 and the wire sensor 7, the input end of the AD converter 17 is connected to the output end of the wire sensor 7, and the output end of the AD converter 17 is connected to the input end of the controller 4;

[0046] The input end of the controller 4 is also connected to a posture sensor 9 .

[0047] Preferably, the temperature sensor 8 includes a first temperature sensor and a second temperature sensor, the first temperature sensor is arranged inside the shell 12, and the second temperature sensor is arranged outside the shell 12, and both the first temperature sensor and the second temperature sensor are connected to the input end of the controller 4.

[0048] Preferably, the positioning module 5 includes a GPS module.

[0049] In this embodiment, the controller 4 uses an STM32 single-chip microcomputer, the controller 4 is connected to the ZigBee module through a UART serial port, and the controller 4 is connected to a 4G communication detection board through the ZigBee module wireless communication. Multiple detection systems are set up in one area, so that multiple controllers 4 transmit detection information to the 4G communication detection board through the ZigBee modules connected thereto, and then the 4G communication detection board uploads it to the server.

[0050] The detection information includes temperature parameters detected by the temperature sensor 8 and state information of the weight 2 determined by the controller 4 through the parameters detected by the posture sensor 9 and the wire sensor 7 .

[0051] The attitude sensor 9 uses a gyroscope chip, and the attitude sensor 9 is connected to the controller 4 through an SPI serial port.

[0052] During operation, if the compensation rope 3 moves upward, the weight 2 moves upward with the compensation rope 3, the pull rope of the pull rope sensor 7 is stretched upward, the length of the pull rope changes (displacement), and the analog signal output by the pull rope sensor 7 changes. The analog signal is converted into a digital signal through the AD converter 17 and transmitted to the controller 4, providing a data basis for the controller 4 to use the threshold method to determine whether the state of the anchoring device is abnormal.

[0053] The attitude sensor 9 and the first and second temperature sensors are also tested at the same time. When the weight 2 changes its attitude, the output value of the attitude sensor 9 changes, providing a data basis for the controller 4 to use a threshold method to determine whether the state of the anchor device is abnormal.

[0054] When problems such as network disconnection occur, the force condition of the weight 2 changes, and the weight 2 falls due to gravity. At the same time, the rope restraint of the pull-wire sensor 7 disappears, the rope is reset, and the analog signal output by the pull-wire sensor 7 changes. The analog signal is converted into a digital signal through the AD converter 17 and transmitted to the controller 4, providing a data basis for the controller 4 to use the threshold method to determine whether the state of the anchoring device is abnormal.

[0055] In this embodiment, the battery is used to power the system, and the battery is charged by a solar charging module. The battery is connected to a power detection circuit, and the power detection circuit includes a MAX17048 power management chip, which is connected to the battery, and the power management chip is connected to the controller 4 through an I2C serial port.

[0056] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A contact network monitoring system, comprising a limit frame (1), a weight (2) and a compensation rope (3), wherein the weight (2) is arranged between the limit frames (1), and the upper end of the weight (2) is connected to the compensation rope (3), characterized in that: It also includes a detection box, the detection box is arranged near the lower end of the limit frame (1), a detection circuit is arranged in the detection box, the detection circuit includes a controller (4), a positioning module (5) and a communication module (6), the controller (4) is connected to the positioning module (5) and the communication module (6), the input end of the controller (4) is connected to the detection module, and the detection module includes a wire sensor (7), a temperature sensor (8) and a posture sensor (9); A hoop (10) is provided on the weight (2), the hoop (10) is fixed to the pull rope of the pull wire sensor (7), and a posture sensor (9) is fixedly provided on the weight (2); The controller (4) is also connected to a power supply circuit, which comprises a battery and a solar charging module (11).

2. A contact network monitoring system according to claim 1, characterized in that: The detection box comprises a shell (12), an upper fixing frame (13), a lower fixing frame (14) and a pulley block bracket (15); one end of the upper fixing frame (13) and the lower fixing frame (14) are fixed to the shell (12) and the other end are fixed to the limit frame (1).

3. A contact network monitoring system according to claim 2, characterized in that: A pulley block bracket (15) is provided at the lower end of the housing (12), the pulley block bracket (15) is a straight-line plate, one end of the pulley block bracket (15) is fixed to the lower end surface of the housing (12), and a pulley (16) is provided on the upper end surface of the other end of the pulley block bracket (15), and the pulley (16) and the pulley block bracket (15) are connected by bolts; After the pull rope of the pull wire sensor (7) is fixed to the clamp (10), it passes through the pulley (16) and enters the interior of the housing (12); the detection part of the pull wire sensor (7) is fixed to the interior of the housing (12).

4. A contact network monitoring system according to claim 2, characterized in that: The shell (12) is a trapezoidal structure with a hollow interior, and the upper end surface of the shell (12) is an inclined surface; The solar charging module (11) comprises a photovoltaic panel and a charging circuit, the photovoltaic panel is fixed to the upper end surface of the housing (12), the charging circuit is arranged in the housing (12), and the output end of the charging circuit is connected to a battery.

5. A contact network monitoring system according to claim 1, characterized in that: The communication module (6) comprises a ZigBee module.

6. A contact network monitoring system according to claim 1, characterized in that: An AD converter (17) is provided between the controller (4) and the wire pulling sensor (7), the input end of the AD converter (17) is connected to the output end of the wire pulling sensor (7), and the output end of the AD converter (17) is connected to the input end of the controller (4); The input end of the controller (4) is also connected to a posture sensor (9).

7. A contact network monitoring system according to claim 1, characterized in that: The temperature sensor (8) comprises a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged inside the housing (12), and the second temperature sensor is arranged outside the housing (12), and both the first temperature sensor and the second temperature sensor are connected to the input end of the controller (4).

8. A contact network monitoring system according to claim 1, characterized in that: The positioning module (5) comprises a GPS module.

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