A monitoring device for BGM type asymmetric high voltage pulse track circuit

Abstract

The utility model discloses a kind of monitoring equipment for BGM type asymmetric high-voltage pulse track circuit, including multiple groups of monitoring unit, with the communication host computer connected to multiple groups of monitoring unit and with the monitoring host computer connected to communication host computer;Each group of monitoring unit includes multiple monitoring extension, the number of monitoring extension in each group of monitoring unit and each track section BGM type asymmetric high-voltage pulse track circuit is identical;Monitoring extension detects monitoring to each BGM type asymmetric high-voltage pulse track circuit, and each monitoring extension includes pulse peak voltage sampling unit, head effective value voltage sampling unit, tail effective value voltage sampling unit, switching quantity acquisition unit and CAN communication unit.The utility model simple structure, to high-voltage pulse decoder input, output voltage and binary differential relay and interlocking relay state are monitored on line, overcome the malpractice that existing monitoring system cannot monitor track circuit state.

Description

Technical Field

[0001] This utility model belongs to the field of railway signal lighting monitoring technology, and in particular relates to a monitoring device for BGM type asymmetrical high voltage pulse track circuit. Background Technology

[0002] In the daily maintenance of railway signaling, the detection and adjustment of the electrical characteristics of track circuits to ensure their normal operation is a fundamental condition for ensuring traffic safety and maintaining traffic order. Asymmetrical high-voltage pulse track circuits are a type of track circuit system. This circuit consists of transmitting, channeling, and receiving equipment. It transmits asymmetrical pulse signals on the rail surface with high amplitude, which can penetrate moderate rust layers and semi-insulating dust contamination on the rail surface, thus achieving a better shunting effect.

[0003] The BGM-type asymmetrical high-voltage pulse track circuit includes a high-voltage pulse transmitter, a high-voltage pulse decoder, a binary differential relay, and a track interlocking relay. Currently, the electrical characteristics monitoring of the BGM-type asymmetrical high-voltage pulse track circuit only monitors the input and output voltage signals of the high-voltage pulse decoder, without monitoring the status of the relays. This makes it impossible to determine the track circuit status and hinders effective track circuit fault analysis.

[0004] Therefore, there is a current need for a monitoring device for BGM-type asymmetrical high-voltage pulse track circuits. This device should have a simple structure and reasonable design, enabling online monitoring of the input and output voltages of the high-voltage pulse decoder, as well as the status of the binary differential relays and interlocking relays. This overcomes the shortcomings of existing monitoring systems that cannot monitor the track circuit status, providing timely fault analysis data for maintenance personnel, thereby greatly improving railway transportation efficiency and ensuring train operation safety. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a monitoring device for BGM-type asymmetrical high-voltage pulse track circuit, which addresses the shortcomings of the existing technology. The device has a simple structure and reasonable design, and can monitor the input and output voltages of the high-voltage pulse decoder, as well as the status of the binary differential relay and interlocking relay online. This overcomes the shortcomings of existing monitoring systems that cannot monitor the status of track circuits, and provides maintenance personnel with timely fault analysis basis, thereby greatly improving railway transportation efficiency and ensuring train operation safety.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a monitoring device for BGM type asymmetrical high voltage pulse track circuit, including multiple monitoring units for detecting BGM type asymmetrical high voltage pulse track circuit in multiple track sections, a communication host connected to the multiple monitoring units, and a monitoring host connected to the communication host. Each monitoring unit includes a monitoring sub-unit for detecting multiple BGM-type asymmetric high-voltage pulse track circuits on a track section. The number of monitoring sub-units in each monitoring unit is the same as the number of BGM-type asymmetric high-voltage pulse track circuits on each track section. The monitoring unit detects and monitors each BGM-type asymmetrical high-voltage pulse track circuit. Each monitoring unit includes a pulse peak voltage sampling unit, a head effective voltage sampling unit, a tail effective voltage sampling unit, a switch quantity acquisition unit, a processing unit, and a CAN communication unit.

[0007] The aforementioned monitoring device for a BGM-type asymmetric high-voltage pulse track circuit further includes a pulse peak voltage sampling unit comprising a first voltage sensor and a first shaping and amplifying module connected to the output terminal of the first voltage sensor. The input terminal of the first voltage sensor is connected to the input terminal of the high-voltage pulse decoder via two transmission lines, and the output terminal of the first shaping and amplifying module is connected to the processing unit.

[0008] The aforementioned monitoring device for a BGM-type asymmetric high-voltage pulse track circuit further includes a head effective voltage sampling unit comprising a second voltage sensor and a second shaping and amplifying module connected to the output terminal of the second voltage sensor. The input terminal of the second voltage sensor is connected to the head DC pulse output terminal of the high-voltage pulse decoder via two transmission lines, and the output terminal of the second shaping and amplifying module is connected to the processing unit.

[0009] The aforementioned monitoring device for a BGM-type asymmetric high-voltage pulse track circuit further includes a tail effective voltage sampling unit comprising a third voltage sensor and a third shaping and amplifying module connected to the output terminal of the third voltage sensor. The input terminal of the third voltage sensor is connected to two transmission lines at the tail DC pulse output terminal of the high-voltage pulse decoder, and the output terminal of the third shaping and amplifying module is connected to the processing unit.

[0010] The aforementioned monitoring device for a BGM-type asymmetric high-voltage pulse track circuit further includes a CAN communication unit connected to a processing unit, a CAN communication unit connected to a CAN bus, and a processing unit connected to a communication host via a CAN bus.

[0011] The aforementioned monitoring device for BGM-type asymmetrical high-voltage pulse track circuit further includes a power supply module, which supplies power to the processing unit, pulse peak voltage sampling unit, head effective voltage sampling unit, tail effective voltage sampling unit, switch quantity acquisition unit, and CAN communication unit.

[0012] The aforementioned monitoring device for BGM-type asymmetrical high-voltage pulse track circuit further includes a switch quantity acquisition unit comprising a first switch quantity acquisition module, a second switch quantity acquisition module, and a third switch quantity acquisition module. The first switch quantity acquisition module is connected to the front contact of a binary differential relay GJR, the second switch quantity acquisition module is connected to the front contact of a track interlocking relay DGJ, and the third switch quantity acquisition module is connected to the rear contact of a track interlocking relay DGJ. The output terminals of the first, second, and third switch quantity acquisition modules are all connected to a processing unit.

[0013] The aforementioned monitoring device for BGM-type asymmetric high-voltage pulse track circuit further includes a processing unit that is a microcontroller, a communication host that is connected to a monitoring host via a network cable, and a monitoring host that is located in a monitoring room.

[0014] This utility model has the following advantages compared with the prior art: 1. This utility model has a simple structure and reasonable design, which can effectively adapt to the monitoring of multiple BGM-type asymmetrical high-voltage pulse track circuits in multiple track sections, thus improving the scope of application.

[0015] 2. This utility model is equipped with a communication host, the output of which is connected to a CAN bus. Each monitoring unit is connected in parallel on the CAN bus, realizing information interaction. In addition, the communication host and the CAN bus enable the parallel connection of multiple outdoor monitoring units, which not only increases the monitoring range, but also increases the communication distance of the CAN bus in the communication host, thereby improving the integration of each outdoor monitoring unit in the system and facilitating centralized monitoring.

[0016] 3. The monitoring unit of this utility model is equipped with a pulse peak voltage sampling unit, a head effective value voltage sampling unit, and a tail effective value voltage sampling unit, which respectively detect the input voltage, the output head voltage, and the tail voltage of the high voltage pulse decoder, providing rapid support for finding and analyzing high voltage pulse decoder faults and improving the work efficiency of maintenance personnel.

[0017] 4. In this utility model, the voltage sensor sampling in the pulse peak voltage sampling unit, the head effective voltage sampling unit, and the tail effective voltage sampling unit is all sampled through an isolation transformer. The sampling circuit of the switch quantity sampling unit is connected to the relay contacts and has no direct electrical connection with the original asymmetrical high-voltage pulse track circuit. Therefore, the connection of the monitoring unit will not affect the normal operation of the original asymmetrical high-voltage pulse track circuit.

[0018] In summary, this utility model has a simple structure and reasonable design. It enables online monitoring of the input and output voltages of the high-voltage pulse decoder, as well as the status of the binary differential relay and interlocking relay. This overcomes the shortcomings of existing monitoring systems that cannot monitor the status of track circuits, and provides timely fault analysis information for maintenance personnel, thereby greatly improving railway transportation efficiency and ensuring train operation safety.

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a circuit block diagram of the present invention.

[0021] Figure 2 This is a circuit diagram of the monitoring unit of this utility model.

[0022] Explanation of reference numerals in the attached figures: 100—Monitoring host; 200—Communication host; 300—Monitoring extension; 400—Network cable; 500—CAN bus; 10—Pulse peak voltage sampling unit; 11—First voltage sensor; 12—First shaping and amplification module; 20—Head RMS voltage sampling unit; 21—Second voltage sensor; 22—Second shaping and amplification module; 30—Tail RMS voltage sampling unit; 31—Third voltage sensor; 32—Third shaping and amplification module; 40—Switch input acquisition unit; 50—Power supply module; 60—CAN communication unit; 70—Processing unit; 80—High voltage pulse decoder. Detailed Implementation

[0023] like Figures 1 to 2 As shown, this utility model includes multiple monitoring units that detect BGM-type asymmetric high-voltage pulse track circuits in multiple track sections, a communication host 200 connected to the multiple monitoring units, and a monitoring host 100 connected to the communication host 200. Each monitoring unit group includes a monitoring sub-unit 300 for detecting multiple BGM-type asymmetric high-voltage pulse track circuits on a track section. The number of monitoring sub-units 300 in each monitoring unit group is the same as the number of BGM-type asymmetric high-voltage pulse track circuits on each track section. The monitoring unit 300 detects and monitors each BGM-type asymmetric high-voltage pulse track circuit. Each monitoring unit 300 includes a pulse peak voltage sampling unit 10, a head effective value voltage sampling unit 20, a tail effective value voltage sampling unit 30, a switch quantity acquisition unit 40, a processing unit 70, and a CAN communication unit 60.

[0024] In this embodiment, the pulse peak voltage sampling unit 10 includes a first voltage sensor 11 and a first shaping and amplifying module 12 connected to the output terminal of the first voltage sensor 11. The input terminal of the first voltage sensor 11 is connected to the input terminal of the high voltage pulse decoder 80 via two transmission lines. The output terminal of the first shaping and amplifying module 12 is connected to the processing unit 70.

[0025] In this embodiment, the head effective voltage sampling unit 20 includes a second voltage sensor 21 and a second shaping and amplifying module 22 connected to the output terminal of the second voltage sensor 21. The input terminal of the second voltage sensor 21 is connected to the head DC pulse output terminal of the high voltage pulse decoder 80 via two transmission lines. The output terminal of the second shaping and amplifying module 22 is connected to the processing unit 70.

[0026] In this embodiment, the tail effective value voltage sampling unit 30 includes a third voltage sensor 31 and a third shaping and amplifying module 32 connected to the output terminal of the third voltage sensor 31. The input terminal of the third voltage sensor 31 is connected to the tail DC pulse output terminal of the high voltage pulse decoder 80 via two transmission lines. The output terminal of the third shaping and amplifying module 32 is connected to the processing unit 70.

[0027] In this embodiment, the CAN communication unit 60 is connected to the processing unit 70, the CAN communication unit 60 is connected to the CAN bus 500, and the processing unit 70 is connected to the communication host 200 via the CAN bus 500.

[0028] In this embodiment, the monitoring unit 300 further includes a power supply module 50, which supplies power to the processing unit 70, the pulse peak voltage sampling unit 10, the head effective value voltage sampling unit 20, the tail effective value voltage sampling unit 30, the switch quantity acquisition unit 40, and the CAN communication unit 60.

[0029] In this embodiment, the switch quantity acquisition unit 40 includes a first switch quantity acquisition module, a second switch quantity acquisition module, and a third switch quantity acquisition module. The first switch quantity acquisition module is connected to the front contact of the binary differential relay GJR, the second switch quantity acquisition module is connected to the front contact of the track interlocking relay DGJ, and the third switch quantity acquisition module is connected to the rear contact of the track interlocking relay DGJ. The output terminals of the first, second, and third switch quantity acquisition modules are all connected to the processing unit 70.

[0030] In this embodiment, the processing unit 70 is a microcontroller, the communication host 200 is connected to the monitoring host 100 via a network cable 400, and the monitoring host 100 is located in the monitoring room.

[0031] In this embodiment, the output terminals of the first shaping and amplifying module 12, the second shaping and amplifying module 22, and the third shaping and amplifying module 32 are connected to the ADC interface of the processing unit 70 to realize ADC conversion; the output terminals of the first switch quantity acquisition module, the second switch quantity acquisition module, and the third switch quantity acquisition module are all connected to the IO port of the processing unit 70 to realize switch quantity acquisition.

[0032] In this embodiment, the CAN communication unit 60 can refer to the CAN communication unit of SJA1000, and is powered by 5V. The CAN communication unit 60 and the processing unit 70 are connected via a serial port.

[0033] In this embodiment, the power module 50 includes an AC / DC conversion module and a 5V to 3.3V power module connected to the output of the AC / DC conversion module. The AC / DC conversion module can refer to the TP20AU220T05D24W AC-DC power module, which outputs +5V, +24V, and -24V power. The 5V to 3.3V power module can refer to the TPS54336 AD / DA conversion module. The function of the power module is to perform conversion, thereby providing operating power to the relevant units and modules. The actual use of the power module 50 is not specifically limited, as long as it meets the usage requirements.

[0034] In this embodiment, the processing unit 70 is an AT32F435RG7 microcontroller, which integrates an ADC converter and is powered by 3.3V. The function of the processing unit 70 is to convert the voltage signal using the ADC, analyze and process the information transmitted by the switch quantity acquisition unit, and transmit it to the CAN communication unit 60.

[0035] In this embodiment, the first voltage sensor 11, the second voltage sensor 21, and the third voltage sensor 31 can all refer to the HVS-AS3.3 voltage sensor, with a power supply voltage of 3.3V.

[0036] In this embodiment, the first shaping and amplification module 12, the second shaping and amplification module 22, and the third shaping and amplification module 22 can all refer to the CR200-50ns shaping and amplification module, which is powered by 24V.

[0037] In this embodiment, the first voltage sensor 11 has two functions: first, to collect the input pulse voltage signal of the high voltage pulse decoder; and second, to electrically isolate the voltage sampling unit from the high voltage pulse decoder. The first shaping and amplification module 12 has the function of shaping and amplifying the voltage signal collected by the first voltage sensor 11 and then transmitting it to the processing unit 70. The second voltage sensor 21 has two functions: first, to collect the DC voltage signal output by the high voltage pulse decoder; and second, to electrically isolate the voltage sampling unit from the high voltage pulse decoder. The second shaping and amplifying module 22 shapes and amplifies the voltage signal collected by the second voltage sensor 21 and then transmits it to the processing unit 70. The third voltage sensor 31 has two functions: first, to collect the tail DC voltage signal output by the high voltage pulse decoder; and second, to electrically isolate the voltage sampling unit from the high voltage pulse decoder. The third shaping and amplifying module 32 shapes and amplifies the voltage signal collected by the third voltage sensor 31 and then transmits it to the processing unit 70.

[0038] In this embodiment, the first, second, and third switch quantity acquisition modules can all refer to the opto-isolated PC817C switch quantity acquisition module. In actual connection, the positive terminals of the first, second, and third switch quantity acquisition modules are connected to the front contact of the binary differential relay GJR, and the front contact of the track interlocking relay DGJ is connected to the rear contact of the track interlocking relay, respectively. The negative terminals of the first, second, and third switch quantity acquisition modules are all connected to 24V ground.

[0039] In this embodiment, the monitoring system has a simple structure and reasonable design, effectively adapting to the monitoring of BGM-type asymmetrical high-voltage pulse track circuits in multiple track sections along the track extension direction, thus improving its adaptability.

[0040] In this embodiment, a CAN communication unit 60 is provided, which is connected to the CAN bus 500. Each of the monitoring sub-units 300 is connected in parallel on the CAN bus, realizing information interaction between the outdoor monitoring sub-units 300 and the indoor monitoring host 100. In addition, the communication host 200 realizes the parallel connection of multiple outdoor monitoring sub-units, which not only improves the monitoring range, but also increases the number of CAN buses and improves the integrated connection of each outdoor monitoring sub-unit in the system, facilitating centralized monitoring.

[0041] In this embodiment, the communication host 200 and the monitoring host 100 are connected through a network to realize data transmission between the communication host 200 and the monitoring host 100, thereby improving the adaptability of the monitoring host 100.

[0042] In this embodiment, the communication host 200 adopts the TXGL-SY communication host.

[0043] In this embodiment, the CAN bus 500 is used because the CAN bus 500 has strong anti-interference capabilities for signal transmission, as well as a long transmission distance and multiple node outputs.

[0044] In this embodiment, it should be noted that the high-voltage pulse decoder 80, the binary differential relay GJR, and the track interlocking relay DGJ are conventional devices in the art, and the specific models are not limited.

[0045] In specific use, the primary coil input terminal of the first voltage sensor 11 is connected to the two transmission lines of the input terminal of the high-voltage pulse decoder 80; the primary coil input terminal of the second voltage sensor 21 is connected to the two transmission lines of the head DC pulse output terminal of the high-voltage pulse decoder 80; the primary coil input terminal of the third voltage sensor 31 is connected to the two transmission lines of the tail DC pulse output terminal of the high-voltage pulse decoder 80; the secondary coil output terminal of the first voltage sensor 11 is connected to the INPUT pin of the first shaping and amplifying module 12; the output terminal of the first shaping and amplifying module 12 is connected to the IO port of the processing unit 70; the secondary coil output terminal of the second voltage sensor 21 is connected to the INPUT pin of the second shaping and amplifying module 22; the output terminal of the second shaping and amplifying module 22 is connected to the IO port of the processing unit 70; the secondary coil output terminal of the third voltage sensor 31 is connected to the INPUT pin of the third shaping and amplifying module 32; the output terminal of the third shaping and amplifying module 32 is connected to the IO port of the processing unit 70. The processing unit 70 converts the received first, second, and third voltage signals into digital voltage signals using its internal ADC converter, obtaining the pulse peak voltage, head peak voltage, and tail peak voltage. It then calculates the effective values ​​of the head and tail peak voltages by taking the square root of 2. If all three voltage values ​​meet the design requirements, the high-voltage pulse decoder 80 is functioning correctly; otherwise, it is malfunctioning. The function of the switch quantity acquisition unit 40 is to convert the status information of the front contact of the binary differential relay GJR, the front contact of the track interlocking relay DGJ, and the rear contact of the track interlocking relay into switch quantity signals and transmit them to the processing unit 70. The processing unit 70 sends the received switch quantity signals to the monitoring host 100 through the communication host 200. The monitoring host 100 receives the switch quantity signals and can determine whether the front contact of the binary differential relay is in an open or closed state based on the switch quantity signal of the front contact of the binary differential relay. The track circuit is idle if the front contact of the binary differential relay is closed and the front contact of the track interlocking relay DGJ is closed and the rear contact is open, based on the switching signals of the front and rear contacts of the track interlocking relay DGJ. Conversely, if the front contact of the binary differential relay is open and the front contact of the track interlocking relay DGJ is open and the rear contact is closed, the track circuit is occupied or faulty.

[0046] By monitoring the pulse peak voltage, head effective voltage and tail effective voltage, the status of the front contact of the binary differential relay, and the status of the front and rear contacts of the track interlocking relay DGJ obtained by the monitoring host 100, the BGM type asymmetrical high-voltage pulse track circuit can be monitored. This also enables remote monitoring of the BGM type asymmetrical high-voltage pulse track circuit, providing rapid support for finding and analyzing track circuit faults and improving the work efficiency of maintenance personnel.

[0047] In summary, this utility model has a simple structure and reasonable design, and is highly practical for online monitoring of the input and output voltages of the high-voltage pulse decoder, as well as the status of the binary differential relay and interlocking relay.

[0048] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A monitoring device for BGM-type asymmetrical high-voltage pulse track circuits, characterized in that: It includes multiple monitoring units that detect BGM-type asymmetric high-voltage pulse track circuits in multiple track sections, a communication host (200) connected to the multiple monitoring units, and a monitoring host (100) connected to the communication host (200). Each monitoring unit group includes a monitoring sub-unit (300) for detecting multiple BGM-type asymmetric high-voltage pulse track circuits on a track section. The number of monitoring sub-units (300) in each monitoring unit group and the number of BGM-type asymmetric high-voltage pulse track circuits on each track section are the same. The monitoring unit (300) detects and monitors each BGM-type asymmetric high-voltage pulse track circuit. Each monitoring unit (300) includes a pulse peak voltage sampling unit (10), a head effective voltage sampling unit (20), a tail effective voltage sampling unit (30), a switch quantity acquisition unit (40), a processing unit (70), and a CAN communication unit (60).

2. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 1, characterized in that: The pulse peak voltage sampling unit (10) includes a first voltage sensor (11) and a first shaping and amplifying module (12) connected to the output terminal of the first voltage sensor (11). The input terminal of the first voltage sensor (11) is connected to the input terminal of the high voltage pulse decoder (80) via two transmission lines. The output terminal of the first shaping and amplifying module (12) is connected to the processing unit (70).

3. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 2, characterized in that: The head effective voltage sampling unit (20) includes a second voltage sensor (21) and a second shaping and amplifying module (22) connected to the output terminal of the second voltage sensor (21). The input terminal of the second voltage sensor (21) is connected to the head DC pulse output terminal of the high voltage pulse decoder (80) via two transmission lines. The output terminal of the second shaping and amplifying module (22) is connected to the processing unit (70).

4. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 3, characterized in that: The tail effective value voltage sampling unit (30) includes a third voltage sensor (31) and a third shaping and amplifying module (32) connected to the output terminal of the third voltage sensor (31). The input terminal of the third voltage sensor (31) is connected to the tail DC pulse output terminal of the high voltage pulse decoder (80) via two transmission lines. The output terminal of the third shaping and amplifying module (32) is connected to the processing unit (70).

5. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 1, characterized in that: The CAN communication unit (60) is connected to the processing unit (70), the CAN communication unit (60) is connected to the CAN bus (500), and the processing unit (70) is connected to the communication host (200) via the CAN bus (500).

6. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 5, characterized in that: The monitoring unit (300) also includes a power supply module (50), which supplies power to the processing unit (70), the pulse peak voltage sampling unit (10), the head effective value voltage sampling unit (20), the tail effective value voltage sampling unit (30), the switch quantity acquisition unit (40), and the CAN communication unit (60).

7. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 1, characterized in that: The digital quantity acquisition unit (40) includes a first digital quantity acquisition module, a second digital quantity acquisition module and a third digital quantity acquisition module. The first digital quantity acquisition module is connected to the front contact of the binary differential relay GJR, the second digital quantity acquisition module is connected to the front contact of the track interlocking relay DGJ, and the third digital quantity acquisition module is connected to the rear contact of the track interlocking relay DGJ. The output terminals of the first digital quantity acquisition module, the second digital quantity acquisition module and the third digital quantity acquisition module are all connected to the processing unit (70).

8. A monitoring device for a BGM-type asymmetrical high-voltage pulse track circuit according to claim 7, characterized in that: The processing unit (70) is a microcontroller, and the communication host (200) is connected to the monitoring host (100) via a network cable (400). The monitoring host (100) is located in the monitoring room.

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