Track circuit fault searching, positioning and analyzing system

Abstract

The utility model relates to a track circuit fault searching, positioning and analyzing system, which comprises a detection module, the detection module comprises a locomotive signal detection unit, a track surface voltage electrical measurement unit, a stroke detection unit, a positioning unit and a posture detection unit, and a master control module comprises an MCU chip; the locomotive signal detection unit and the rail surface voltage electrical measurement unit are electrically connected with the MCU chip, the stroke detection unit is electrically connected with the MCU chip, the positioning unit is in communication connection with the MCU chip, and the posture detection unit is in communication connection with the MCU chip; the MCU chip is in communication connection with the display module, the MCU chip is in communication connection with the communication module, and the MCU chip is connected with an upper computer through the communication module. The embedded system is provided with the locomotive signal detection unit and the rail surface voltage electrical measurement unit to detect a rail circuit, the travel detection unit and the posture detection unit are arranged to monitor operation of a rail car, and the positioning unit is arranged to provide a hardware circuit for fault positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of railway signal detection, and particularly relates to a track circuit fault search, positioning and analysis system. Background Art

[0002] With the increase of railway speed and the operation of EMUs at 200 - 250 km / h, higher requirements are put forward for the operation quality of supporting equipment such as ground track circuits. The ZPW2000 type insulated jointless track circuit has been widely promoted and used. However, due to the characteristics of audio transmission and non-insulation of this track circuit system, the equipment has disadvantages such as easy occurrence of frequency interference and susceptibility to external electromagnetic environment interference. Especially for the frequency interference between adjacent lines and adjacent sections, it is very difficult to use existing instruments for positioning, qualitative and quantitative analysis.

[0003] In addition, during the process of dealing with such problems, it is often necessary to make multiple round trips to the site for testing and continuously adjust the treatment plan. This not only has low efficiency and great impact on transportation, but also easily causes potential safety hazards. Therefore, there is an urgent need for a track detection device that can perform daily detection, fault positioning and data uploading to meet the detection needs. Summary of the Invention

[0004] The utility model provides a track circuit fault search, positioning and analysis system to solve the problems of cumbersome detection and low detection accuracy of existing instruments. An embedded system is used to set a locomotive signal detection unit and a rail surface voltage detection unit to detect the track circuit, a travel detection unit and an attitude detection unit to monitor the operation of the rail vehicle, and a positioning unit to provide a hardware circuit for realizing fault positioning.

[0005] A track circuit fault search, positioning and analysis system includes a rail vehicle, on which a detection module, a main control module, a display module, a communication module and a power supply module are arranged. The detection module includes a locomotive signal detection unit, a rail surface voltage detection unit, a travel detection unit, a positioning unit and an attitude detection unit, and the main control module includes an MCU chip;

[0006] The locomotive signal detection unit and the rail surface voltage detection unit are electrically connected to the MCU chip, the travel detection unit is electrically connected to the MCU chip, the positioning unit is communicatively connected to the MCU chip, and the attitude detection unit is communicatively connected to the MCU chip;

[0007] The MCU chip is communicatively connected to the display module, the MCU chip is communicatively connected to the communication module, and the MCU chip is connected to a host computer through the communication module;

[0008] The power supply module supplies power to the detection module, the main control module, the display module and the communication module.

[0009] Further, the locomotive signal detection unit includes locomotive induction coils, which are respectively arranged on both sides of the railcar. The locomotive induction coils are fixed to the bottom surface of the railcar, arranged above the rail, and there is a gap between the locomotive induction coils and the rail surface;

[0010] The rail surface voltage measurement unit includes wires and the left and right wheels of the railcar. Both the left and right wheels are made of metal conductive materials, both are in contact with the rail, and the wires are respectively connected to the left and right wheels;

[0011] The MCU chip is connected to a high-speed ADC module. The MCU chip is connected to the locomotive induction coils through the high-speed ADC module, and the MCU chip is connected to the wires through the high-speed ADC module;

[0012] The wire connected to the left wheel is connected to the positive input end of the high-speed ADC module, and the wire connected to the right wheel is connected to the negative input end of the high-speed ADC module.

[0013] The locomotive induction coils receive the rail surface signals, and the locomotive induction coils send the detection information to the MCU chip through the high-speed ADC module.

[0014] In order to simplify the device structure, the wheels are used as the devices to receive the rail surface voltage, and the current is transmitted to the MCU chip through the wheels and wires via the high-speed ADC module.

[0015] Compared with using instrument devices for detection, it avoids electromagnetic environment interference, and since the locomotive induction coils and wheels move on the track, the detection method is simple and the efficiency of the detection work is improved.

[0016] Further, the travel detection unit includes an encoder, and the output end of the encoder is electrically connected to the input end of the MCU chip.

[0017] One encoder is provided on both the left and right wheels.

[0018] Further, the positioning unit includes a Beidou positioning module, and the Beidou positioning module communicates with the MCU chip through the UART serial port.

[0019] Further, the attitude detection unit includes an acceleration sensor, and the acceleration sensor communicates with the MCU chip through the I2C serial port.

[0020] Further, the communication module includes one or both of an Ethernet module and a WiFi module, and both the Ethernet module and the WiFi module communicate with the MCU chip through the UART serial port.

[0021] Further, the power supply module includes a power input interface and a voltage conversion module. The power input interface is connected to a battery, and the other end of the power input interface is connected to the voltage conversion module. The voltage conversion module outputs DC5V and DC3.3V currents.

[0022] Further, the MCU chip is connected to a USB interface, and the USB interface is connected to a USB flash drive;

[0023] The MCU chip is communicatively connected to the USB flash drive through the USB interface. The USB flash drive is set to write the original measurement data, providing a hardware basis for reproducing the entire measurement process.

[0024] Further, a control box is provided on the rail vehicle. A detection module, a main control module, a communication module, a power supply module, and a temperature sensor are arranged in the control box. The output end of the temperature sensor is connected to the input end of the MCU chip.

[0025] Through the above technical solutions, the beneficial effects of the present utility model are as follows:

[0026] The present utility model realizes the detection of the track circuit when the rail vehicle is moving. Part of the circuit of the detection module, the main control module, the communication module, and the power supply module are arranged in the control box. The display module is fixed inside the upper part of the control box, and the control box is fixed to the rail vehicle. Compared with the instrument detection, it can avoid the interference of the external electromagnetic environment and improve the detection accuracy. The detection of the locomotive signal system is realized through the locomotive signal detection unit. The detection of the rail surface voltage is realized through the rail surface voltage measurement unit. The real-time detection of the driving distance and the attitude of the rail vehicle is realized through the travel detection unit and the attitude detection unit. The position of the rail vehicle is detected through the positioning unit, and the MCU chip records the time. The MCU chip sends the detection parameters to the host computer through the communication module. In addition, the hardware circuit adopts an embedded system, the circuit wiring is simple, and it is convenient to maintain. The display module is set to facilitate human-computer interaction, and the operation is simple. Description of the Drawings

[0027] Figure 1 It is the electrical schematic diagram of a track circuit fault finding, positioning and analysis system of the present utility model.

[0028] Figure 2 It is the structural schematic diagram of a track circuit fault finding, positioning and analysis system of the present utility model.

[0029] Reference numerals in the drawings: 1 is the display module, 2 is the power supply module, 3 is the locomotive signal detection unit, 4 is the rail surface voltage measurement unit, 5 is the travel detection unit, 6 is the positioning unit, 7 is the attitude detection unit, 8 is the MCU chip, 9 is the high-speed ADC module, 10 is the communication module, 11 is the USB interface, 12 is the USB flash drive, 13 is the temperature sensor, 14 is the rail vehicle. Detailed Embodiment

[0030] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0031] Embodiment 1

[0032] As Figures 1-2 shown, a track circuit fault finding, positioning and analysis system includes a rail vehicle 14, and a detection module, a main control module, a display module 1, a communication module 10 and a power supply module 2 are arranged on the rail vehicle 14. The detection module includes a locomotive signal detection unit 3, a rail surface voltage detection unit 4, a travel detection unit 5, a positioning unit 6 and an attitude detection unit 7. The main control module includes an MCU chip 8;

[0033] The locomotive signal detection unit 3 and the rail surface voltage detection unit 4 are electrically connected to the MCU chip 8. The travel detection unit 5 is electrically connected to the MCU chip 8. The positioning unit 6 is communicatively connected to the MCU chip 8. The attitude detection unit 7 is communicatively connected to the MCU chip 8;

[0034] The MCU chip 8 is communicatively connected to the display module 1. The MCU chip 8 is communicatively connected to the communication module 10. The MCU chip 8 is connected to a host computer through the communication module 10;

[0035] The power supply module 2 supplies power to the detection module, the main control module, the display module 1 and the communication module 10.

[0036] In this embodiment, the display module 1 is an HMI module, and the display module 1 is connected to the MCU chip 8 through an RS232 module. The MCU chip 8 uses an STM32 type single-chip microcomputer.

[0037] The locomotive signal detection unit 3 includes locomotive induction coils, which are respectively arranged on both sides of the rail vehicle 14. The locomotive induction coils are fixed to the bottom surface of the rail vehicle 14. The locomotive induction coils are arranged above the rail. There is a spacing between the locomotive induction coils and the rail surface;

[0038] The rail surface voltage detection unit 4 includes wires and the left and right wheels of the rail vehicle 14. Both the left and right wheels are made of metal conductive materials. The left and right wheels are both in contact with the rail. The wires are respectively connected to the left and right wheels;

[0039] The MCU chip 8 is connected to a high-speed ADC module 9. The MCU chip 8 is connected to the locomotive induction coils through the high-speed ADC module 9. The MCU chip 8 is connected to the wires through the high-speed ADC module 9;

[0040] The wire connected to the left wheel is connected to the positive input end of the high-speed ADC module 9, and the wire connected to the right wheel is connected to the negative input end of the high-speed ADC module 9.

[0041] The locomotive induction coil is specifically the JT•JS-II dual-channel receiving coil for locomotive signals. The distance between the locomotive induction coil and the upper end face of the rail is 155 ± 5 mm. The high-speed ADC module 9 is the ADS1271IPWR chip, and the number of high-speed ADC modules 9 is two, which are respectively connected to the locomotive signal detection unit 3 and the rail surface voltage detection unit 4.

[0042] The travel detection unit 5 includes an encoder, and the output end of the encoder is electrically connected to the input end of the MCU chip 8.

[0043] The encoder is fixed on the left and right wheels. The MCU chip 8 simultaneously acquires the signals of the two encoders for compensation and averaging. The rotational speed of the motor is obtained by detecting the parameters of the encoder, and then the displacement of the railcar 14 is obtained.

[0044] The positioning unit 6 includes a Beidou positioning module, and the Beidou positioning module communicates with the MCU chip 8 through the UART serial port. The Beidou positioning module includes a positioning chip and an antenna. The positioning chip selects the ATGM336H chip, and the positioning chip receives satellite signals through the antenna to achieve the positioning of the railcar 14.

[0045] The attitude detection unit 7 includes an acceleration sensor, and the acceleration sensor communicates with the MCU chip 8 through the I2C serial port.

[0046] The speed sensor selects the LSM6DS3TR chip.

[0047] The communication module 10 includes one or both of an Ethernet module and a WiFi module, and both the Ethernet module and the WiFi module communicate with the MCU chip 8 through the UART serial port.

[0048] The WiFi module selects the RW007 chip. The Ethernet module includes the KSZ8041NL Ethernet chip, the HY601680 network transformer, and the RJ45 network interface.

[0049] The power supply module 2 includes a power input interface and a voltage conversion module. The power input interface is connected to a battery, the other end of the power input interface is connected to the voltage conversion module, and the voltage conversion module outputs DC5V and DC3.3V currents.

[0050] The battery outputs a DC12V current. The voltage conversion module includes two TPS5431DDAR chips. One of them outputs a DC5V current for DC12V-DC5V conversion, and the other outputs a DC3.3V current for DC5V-DC3.3V conversion.

[0051] The MCU chip 8 is connected to a USB interface 11, and the USB interface 11 is connected to a USB flash drive 12;

[0052] The MCU chip 8 is communicatively connected to the USB flash drive 12 through the USB interface 11.

[0053] The USB interface 11 includes a USB3300-EZ module. The USB3300-EZ module is provided with a TYPE-C-USB interface. The MCU chip 8 is also connected to an FM25CL64B ferroelectric storage module. The FM25CL64B ferroelectric storage module is connected to the MCU chip 8 through an SPI serial port.

[0054] A control box is provided on the rail vehicle 14. A detection module, a main control module, a communication module 10, a power supply module 2 and a temperature sensor 13 are arranged in the control box. The output end of the temperature sensor 13 is connected to the input end of the MCU chip 8.

[0055] The temperature sensor uses a DS18B20 chip.

[0056] During operation, first, the rail vehicle 14 is lifted onto the track, and then the detection length and detection parameters are input through the HMI module. Then the rail vehicle 14 moves on the rail. During the movement, the locomotive signal detection unit 3 and the rail surface voltage detection unit 4 detect the detection parameters of the track circuit. Two high-speed ADC modules 9 are set to simultaneously complete the detection of the locomotive signal system and the detection of the rail surface voltage. The positioning unit sends the position of the rail vehicle 14, and the MCU chip 8 marks the fault point. The running distance of the rail vehicle 14 and the attitude of the rail vehicle 14 are detected in real time through the travel detection unit and the attitude detection unit. The parking control of the rail vehicle 14 is completed. After the detection is completed, the rail vehicle 14 moves backward to the initial position. The MCU chip 8 processes the detection signal and uploads it to the host computer through the communication module 10, and the detection data is stored in the USB flash drive 12.

[0057] The above embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent shall be included in the scope of the present invention patent application.

Claims

1. An analysis system for fault finding and location of track circuits, including a rail vehicle (14), characterized in that, A detection module, a main control module, a display module (1), a communication module (10) and a power supply module (2) are provided on the rail vehicle (14). The detection module includes a locomotive signal detection unit (3), a rail surface voltage measurement unit (4), a travel detection unit (5), a positioning unit (6) and an attitude detection unit (7). The main control module includes an MCU chip (8); The locomotive signal detection unit (3) and the rail surface voltage measurement unit (4) are electrically connected to the MCU chip (8). The travel detection unit (5) is electrically connected to the MCU chip (8). The positioning unit (6) is communicatively connected to the MCU chip (8). The attitude detection unit (7) is communicatively connected to the MCU chip (8); The MCU chip (8) is communicatively connected to the display module (1). The MCU chip (8) is communicatively connected to the communication module (10). The MCU chip (8) is connected to a host computer through the communication module (10); The power supply module (2) supplies power to the detection module, the main control module, the display module (1) and the communication module (10).

2. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that, The locomotive signal detection unit (3) includes locomotive induction coils. The locomotive induction coils are respectively arranged on both sides of the rail vehicle (14). The locomotive induction coils are fixed to the bottom surface of the rail vehicle (14). The locomotive induction coils are arranged above the rail. There is a spacing between the locomotive induction coils and the rail surface; The rail surface voltage measurement unit (4) includes wires and the left and right wheels of the rail vehicle (14). Both the left and right wheels are made of metal conductive materials. The left and right wheels are both in contact with the rail. The wires are respectively connected to the left and right wheels; The MCU chip (8) is connected to a high-speed ADC module (9). The MCU chip (8) is connected to the locomotive induction coils through the high-speed ADC module (9). The MCU chip (8) is connected to the wires through the high-speed ADC module (9); The wire connected to the left wheel is connected to the positive input end of the high-speed ADC module (9). The wire connected to the right wheel is connected to the negative input end of the high-speed ADC module (9).

3. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that The travel detection unit (5) includes an encoder. The output end of the encoder is electrically connected to the input end of the MCU chip (8).

4. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that, The positioning unit (6) includes a Beidou positioning module. The Beidou positioning module communicates with the MCU chip (8) through a UART serial port.

5. The track circuit fault finding, positioning and analysis system according to claim 1, wherein, The attitude detection unit (7) includes an acceleration sensor. The acceleration sensor communicates with the MCU chip (8) through an I2C serial port.

6. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that The communication module (10) includes one or both of an Ethernet module and a WiFi module. Both the Ethernet module and the WiFi module communicate with the MCU chip (8) through a UART serial port.

7. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that The power supply module (2) includes a power input interface and a voltage conversion module. The power input interface is connected to a battery. The other end of the power input interface is connected to the voltage conversion module. The voltage conversion module outputs DC5V and DC3.3V currents.

8. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that, The MCU chip (8) is connected to a USB interface (11). The USB interface (11) is connected to a USB flash drive (12); The MCU chip (8) is communicatively connected to the USB flash drive (12) through a USB interface (11).

9. The track circuit fault finding, positioning and analysis system according to claim 1, characterized in that A control box is provided on the rail vehicle (14). A detection module, a main control module, a communication module (10), a power module (2), and a temperature sensor (13) are provided in the control box. The output end of the temperature sensor (13) is connected to the input end of the MCU chip (8).

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