Detection mechanism of intelligent detection trolley for railway signal equipment

Abstract

The utility model relates to a detection mechanism of an intelligent detection trolley for railway signal equipment, which comprises a detection vehicle, the detection vehicle comprises an equipment box, a seat and wheels, the seat is arranged above the equipment box, the wheels are respectively arranged on two sides of the lower end of the equipment box, the wheels are rotatably connected with the equipment box, and a support is arranged on the equipment box close to the wheels. A track circuit detection antenna is arranged at the bottom end of the support, a transponder reading antenna is fixedly arranged in the middle of the bottom face of the equipment box, a plurality of compensation capacitance sensors are symmetrically arranged along the position of the transponder reading antenna, the compensation capacitance sensors are fixed to the bottom face of the equipment box, and a signal processing circuit is arranged in the equipment box. According to the detection vehicle with the seat, a worker can sit on the detection vehicle to obtain detection data, and the signal processing circuit is arranged to receive a plurality of detection signals and synchronously process the detection data.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track detection, and particularly relates to a detection mechanism of an intelligent detection trolley for railway signal equipment. Background Art

[0002] A railway signal detection trolley is a track vehicle carrying railway signal detection equipment. Under the control of technicians, it can actively or passively detect railway signals. The detection data is fed back to the upper computer. Technicians judge the condition of railway signals according to the detection results of the upper computer and assist the staff to quickly handle faults when the track signals are abnormal.

[0003] Since technicians need to work on-site, most of the existing railway signal detection trolleys are manually operated or move forward automatically with technicians. Multiple technicians walk along the side of the railway track, with a large workload. Moreover, the detection trolley is relatively heavy, and multiple technicians are required to lift the detection trolley before and after operation to get it onto or off the track, which is inconvenient to operate.

[0004] Therefore, there is an urgent need for a detectable vehicle that can be ridden, with a simple structure, which can synchronously detect a variety of railway signals and improve the efficiency of railway signal detection. Summary of the Invention

[0005] The utility model aims to solve the problems that the existing detection trolleys cannot carry technicians and multiple detection data cannot be synchronously collected. A detection mechanism of an intelligent detection trolley for railway signal equipment is proposed, including a detection vehicle with a seat. The staff can sit on the detection vehicle to obtain detection data. A signal processing circuit is set to receive multiple detection signals and perform synchronous processing of multiple detection data.

[0006] To achieve the above object, a detection mechanism of an intelligent detection trolley for railway signal equipment of the utility model includes a positioning module, a track circuit detection antenna, a compensation capacitance sensor, a wheel axle speed sensor, and a transponder reading antenna. It also includes a detection vehicle, which includes an equipment box, a seat, and wheels. The seat is arranged above the equipment box, and wheels are respectively arranged on both sides of the lower end of the equipment box. The wheels are rotatably connected to the equipment box. A bracket is arranged on the equipment box near the wheels. The bottom end of the bracket is provided with a track circuit detection antenna. The transponder reading antenna is fixedly arranged in the middle of the bottom surface of the equipment box. Multiple compensation capacitance sensors are symmetrically arranged along the position of the transponder reading antenna. The compensation capacitance sensors are fixed to the bottom surface of the equipment box. A signal processing circuit is arranged inside the equipment box;

[0007] The input ends of the signal processing circuit are respectively connected to the positioning module, the track circuit detection antenna, the compensation capacitance sensor, the wheel axle speed sensor, and the transponder reading antenna. The signal processing circuit is also communicatively connected to a communication module.

[0008] Further, the signal processing circuit includes a first MCU chip, an interface circuit, a signal amplification circuit, and an AD circuit. The interface circuit is respectively connected to the track circuit detection antenna and multiple compensation capacitance sensors. The output end of the interface circuit is connected to the input end of the signal amplification circuit. The output end of the signal amplification circuit is connected to the input end of the AD circuit. The output end of the AD circuit is connected to the ADC pin of the first MCU chip.

[0009] The circuit structure is simple and convenient for wiring.

[0010] Further, the signal amplification circuit includes a 1 - 0.5 times amplification circuit, a 1.2 - 7 times amplification circuit, and a signal zeroing amplification circuit;

[0011] The number of the track circuit detection antennas is 2, and the number of the compensation capacitance sensors is 4. Corresponding to the number of the detection antennas and the compensation capacitance sensors, the number of the interface circuit, the signal amplification circuit, and the AD circuit is 2.

[0012] Multi - group data synchronous detection is realized. The first MCU chip is used to collect the processing signals of the track circuit detection antenna and the compensation capacitance sensors.

[0013] Further, the signal processing circuit includes a second MCU chip, a transponder antenna interface, and a transponder processor. The transponder antenna interface is connected to the transponder reading antenna. The output end of the transponder antenna interface is connected to the transponder processor. The transponder processor is communicatively connected to the second MCU chip through a UART serial port.

[0014] The transponder processor receives the signal received by the transponder antenna and transmits the processed signal to the second MCU chip.

[0015] Further, the axle speed sensor is arranged close to the wheel position;

[0016] The signal processing circuit includes a third MCU chip and a speed sensor interface. The input end of the speed sensor interface is connected to the output end of the axle speed sensor. The output end of the speed sensor interface is connected to the third MCU chip.

[0017] Further, the positioning module includes a Beidou satellite positioning unit. The Beidou satellite positioning unit is connected to the third MCU chip through a UART serial port.

[0018] The third MCU chip collects the input signal of the speed sensor and the positioning signal.

[0019] Further, the communication module includes an Ethernet unit. The signal processing circuit is connected to a host computer through the Ethernet unit.

[0020] Further, the equipment box includes a box body and a box cover. The box body is a rectangular structure with a hollow interior and an open upper end. One side of the box cover is hinged to the open position of the box body, and the other side of the box cover is connected to the box body through a lock.

[0021] The seat includes a seat cushion and a backrest. The bottom end of the seat cushion is fixed to the box cover, and the upper end of the seat cushion is rotatably connected to the backrest. Two handles are fixedly arranged on both sides of the box cover close to the seat cushion.

[0022] The rotatable connection between the seat cushion and the backrest improves the riding comfort of the technicians.

[0023] Further, an installation groove is formed at the lower end of the box body. The installation groove is a square groove, and a through hole is formed in the installation groove. A bolt is arranged in the through hole.

[0024] The inspection vehicle needs to be connected to the power vehicle, and the power vehicle provides the driving power for the inspection vehicle. The provision of the installation groove, the through hole and the bolt facilitates the combination of the inspection vehicle and the power vehicle.

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

[0026] (1) The inspection vehicle of the present utility model includes an equipment box, a seat and wheels. Wheels are arranged at the bottom of the equipment box. In order to facilitate the signal detection of the transponder, the compensation capacitor on the rail and the rail, the equipment box is an installation platform for the track circuit detection antenna, the compensation capacitor sensor and the transponder reading antenna, so that they are close to the rail. A signal processing circuit is arranged inside the equipment box, and the equipment box protects the signal processing circuit. A seat is arranged on the equipment box. During the detection process, technicians can sit on the inspection vehicle to detect the rail without walking beside the track. The operation comfort is improved.

[0027] (2) The present utility model arranges a signal processing circuit to synchronously collect, amplify, filter and perform AD conversion processing on multiple detection signals of the positioning module, the track circuit detection antenna, the compensation capacitor sensor, the axle speed sensor and the transponder reading antenna. The efficiency of data collection and processing is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is one of the structural schematic diagrams of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model;

[0029] Figure 2 It is the second structural schematic diagram of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model;

[0030] Figure 3 It is the installation structural schematic diagram of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model, the power vehicle and the inspection vehicle;

[0031] Figure 4 This is one of the electrical schematic diagrams of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model;

[0032] Figure 5 This is the second electrical schematic diagram of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model;

[0033] Figure 6 This is the third electrical schematic diagram of the detection mechanism of an intelligent detection trolley for railway signal equipment of the present utility model.

[0034] Reference numerals in the attached drawings: 1 is the track circuit detection antenna, 2 is the compensation capacitance sensor, 3 is the axle speed sensor, 4 is the transponder reading antenna, 5 is the equipment box, 6 is the seat, 7 is the wheel, 8 is the bracket, 9 is the interface circuit, 10 is the signal amplification circuit, 11 is the AD circuit, 12 is the transponder antenna interface, 13 is the transponder processor, 14 is the speed sensor interface, 15 is the Beidou satellite positioning unit, 17 is the Ethernet unit, 19 is the handle, 20 is the installation groove, 21 is the bolt. Specific implementation manner

[0035] The present utility model will be further described below in conjunction with the attached drawings and specific implementation manners:

[0036] Embodiment 1

[0037] As Figures 1 - 6 shown, a detection mechanism of an intelligent detection trolley for railway signal equipment includes a positioning module, a track circuit detection antenna 1, a compensation capacitance sensor 2, an axle speed sensor 3, and a transponder reading antenna 4, and further includes a detection vehicle. The detection vehicle includes an equipment box 5, a seat 6, and wheels 7. The seat 6 is arranged above the equipment box 5, and the wheels 7 are respectively arranged on both sides of the lower end of the equipment box 5. The wheels 7 are rotatably connected to the equipment box 5. A bracket 8 is arranged on the equipment box 5 near the position of the wheels 7. The track circuit detection antenna 1 is arranged at the bottom end of the bracket 8. The transponder reading antenna 4 is fixedly arranged in the middle of the bottom surface of the equipment box 5. A plurality of compensation capacitance sensors 2 are symmetrically arranged along the position of the transponder reading antenna 4. The compensation capacitance sensors 2 are fixed to the bottom surface of the equipment box 5. A signal processing circuit is arranged inside the equipment box 5;

[0038] The input ends of the signal processing circuit are respectively connected to the positioning module, the track circuit detection antenna 1, the compensation capacitance sensor 2, the axle speed sensor 3, and the transponder reading antenna 4. The signal processing circuit is also communicatively connected to a communication module.

[0039] Preferably, the equipment box 5 includes a box body and a box cover. The box body is a rectangular structure with a hollow interior and an open upper end. One side of the box cover is hinged to the open position of the box body, and the other side of the box cover is connected to the box body by a lock.

[0040] The seat 6 includes a seat cushion and a backrest. The bottom end of the seat cushion is fixed to the box cover, and the upper end of the seat cushion is rotatably connected to the backrest. Two handles 19 are fixedly arranged on both sides of the box cover close to the seat cushion.

[0041] Preferably, an installation groove 20 is formed at the lower end of the box body. The installation groove 20 is a square groove, and a through hole is formed in the installation groove 20. A bolt 21 is arranged in the through hole.

[0042] Before operation, the inspection vehicle needs to be lifted onto the track. Then, the transponder reading antenna 4 is located above the position where the transponder is installed on the track, the compensation capacitance sensor 2 is arranged above the position where the compensation capacitance is placed on the track, and the track circuit detection antenna 1 is arranged above the track.

[0043] The inspection vehicle needs a power vehicle as the head, and the power vehicle drives the inspection vehicle to move on the track. As Figure 3 shown. After installation, insert the bolt 21 into the installation groove 20 so that the bolt 21 passes through the inspection vehicle and the power vehicle in sequence to fix the two.

[0044] A safety belt is arranged on the seat 6. After the staff takes their seats, they fasten the safety belt and drive the inspection trolley on the track.

[0045] Embodiment 2

[0046] Based on the above Embodiment 1, the inspection of the railway track is described in Embodiment 2.

[0047] The railway track is made of metal conductive material. In modern railway transportation, the signals of the railway are transmitted through the railway track. It is necessary to detect the signal frequency, the current, voltage and power factor of the compensation capacitance on the railway track, and the signal quality of the transponder. The signal quality of the transponder includes detecting whether the signal emitted by the transponder is clear and accurate, whether the received signal is complete and whether there is interference.

[0048] Preferably, the communication module includes an Ethernet unit 17. The signal processing circuit is connected to a host computer through the Ethernet unit 17. The Ethernet unit 17 is a YT8512H chip. The first MCU chip, the second MCU chip and the third MCU chip are all connected to a YT8512H chip to facilitate data synchronization processing.

[0049] Preferably, the signal processing circuit includes a first MCU chip, an interface circuit 9, a signal amplification circuit 10, and an AD circuit 11. The interface circuit 9 is respectively connected to the track circuit detection antenna 1 and multiple compensation capacitance sensors 2. The output end of the interface circuit 9 is connected to the input end of the signal amplification circuit 10. The output end of the signal amplification circuit 10 is connected to the input end of the AD circuit 11. The output end of the AD circuit 11 is connected to the ADC pin of the first MCU chip.

[0050] In this embodiment, the first MCU chip uses an ARM chip, the interface circuit 9 is KF2EDGR, the signal amplification circuit 10 uses an OPA27GU amplifier, and the AD circuit 11 uses an AD736JRZ chip.

[0051] Preferably, the signal amplification circuit 10 includes a 1 - 0.5 times amplification circuit, a 1.2 - 7 times amplification circuit, and a signal zero - adjustment amplification circuit; the 1 - 0.5 times amplification circuit is A in the figure, the 1.2 - 7 times amplification circuit is B in the figure, and the signal zero - adjustment amplification circuit is C in the figure;

[0052] The number of the track circuit detection antennas is 2, and the number of the compensation capacitance sensors 2 is 4. Corresponding to the number of the detection antennas and the number of the compensation capacitance sensors 2, the numbers of the interface circuit 9, the signal amplification circuit 10, and the AD circuit 11 are all 2.

[0053] When performing track circuit detection, the track circuit detection antenna receives the electrical signal on the track, and after being amplified, filtered, and AD - converted by the interface circuit 9, the processed signal is transmitted to the first MCU chip and then externally transmitted by the first MCU chip.

[0054] Similarly, multiple compensation capacitance sensors 2 respectively detect the compensation capacitances connected in series on the track, and the current and voltage signals of the compensation capacitances are transmitted to the first MCU chip after being amplified and AD - converted, and then externally transmitted by the first MCU chip. The power factor is calculated from the current signal and will not be elaborated here.

[0055] Preferably, the signal processing circuit includes a second MCU chip, a transponder antenna interface 12, and a transponder processor 13. The transponder antenna interface 12 is connected to the transponder reading antenna 4. The output end of the transponder antenna interface 12 is connected to the transponder processor 13. The transponder processor 13 is connected to the second MCU chip through UART serial communication.

[0056] The second MCU chip uses an STM32F765VGT6 single - chip microcomputer, the transponder antenna interface 12 uses BX - VH, and the transponder processor 13 uses an XC6SLX9 chip. The transponder antenna interface 12 and the transponder processor 13 are connected by an SP3485EN duplex transceiver.

[0057] The bottom of the inspection vehicle is equivalent to being installed with a transponder to detect the transponder installed between the rails. During the detection, the transponder reading antenna 4 receives the signal sent by the ground transponder. This signal is transmitted through the transponder antenna interface 12 to the transponder processor 13 for reading, and then the detection parameters are sent to the second MCU chip and transmitted outward by the second MCU chip.

[0058] Preferably, the axle speed sensor 3 is arranged on the wheel 7;

[0059] The signal processing circuit includes a third MCU chip and a speed sensor interface 14. The input end of the speed sensor interface 14 is connected to the output end of the axle speed sensor 3, and the output end of the speed sensor interface 14 is connected to the third MCU chip.

[0060] Preferably, the positioning module includes a Beidou satellite positioning unit 15, and the Beidou satellite positioning unit 15 is connected to the third MCU chip through a UART serial port.

[0061] The third MCU chip selects an ARM chip, the speed sensor interface 14 selects a KF2EDGR interface, and the Beidou satellite positioning unit 15 selects a UM980 chip.

[0062] During the detection process, in order to facilitate setting the detection section, setting the detection distance, and facilitating the confirmation of the fault occurrence point, the speed sensor 3 and the positioning module are set. The positioning module transmits the position information to the third MCU chip, and the speed sensor 3 transmits the detection parameters to the third MCU chip, which are transmitted outward by the third MCU chip.

[0063] Finally, the detection parameters collected by the first MCU chip, the second MCU chip, and the third MCU chip are respectively transmitted to the host computer through the Ethernet unit 17. Technicians hold the host computer to observe the detection data and judge whether there is an abnormality in the rails.

[0064] The above embodiments are only the preferred embodiments of the present invention, and do not limit the implementation scope 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 should be included in the scope of the patent application of the present invention.

Claims

1. Detection mechanism of an intelligent detection trolley for railway signal equipment, comprising a positioning module, a track circuit detection antenna (1), a compensation capacitor sensor (2), a wheel axle speed sensor (3), and a transponder reading antenna (4), characterized in that, It further includes a detection vehicle, which includes an equipment box (5), a seat (6) and wheels (7). The seat (6) is arranged above the equipment box (5), and the wheels (7) are respectively arranged on both sides of the lower end of the equipment box (5). The wheels (7) are rotationally connected to the equipment box (5). A bracket (8) is arranged on the equipment box (5) near the wheels (7). A track circuit detection antenna (1) is arranged at the bottom end of the bracket (8). A transponder reading antenna (4) is fixedly arranged in the middle of the bottom surface of the equipment box (5). A plurality of compensation capacitance sensors (2) are symmetrically arranged along the position of the transponder reading antenna (4). The compensation capacitance sensors (2) are fixed to the bottom surface of the equipment box (5). A signal processing circuit is arranged inside the equipment box (5). The input ends of the signal processing circuit are respectively connected to a positioning module, a track circuit detection antenna (1), a compensation capacitance sensor (2), a wheel axle speed sensor (3) and a transponder reading antenna (4). The signal processing circuit is also communicatively connected to a communication module.

2. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 1, characterized in that, The signal processing circuit includes a first MCU chip, an interface circuit (9), a signal amplification circuit (10) and an AD circuit (11). The interface circuit (9) is respectively connected to the track circuit detection antenna (1) and a plurality of compensation capacitance sensors (2). The output end of the interface circuit (9) is connected to the input end of the signal amplification circuit (10). The output end of the signal amplification circuit (10) is connected to the input end of the AD circuit (11). The output end of the AD circuit (11) is connected to the ADC pin of the first MCU chip.

3. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 2, characterized in that, The signal amplification circuit (10) includes a 1 - 0.5 times amplification circuit, a 1.2 - 7 times amplification circuit and a signal zeroing amplification circuit. The number of the track circuit detection antennas is 2, and the number of the compensation capacitance sensors (2) is 4. Corresponding to the number of the detection antennas and the number of the compensation capacitance sensors (2), the number of the interface circuit (9), the signal amplification circuit (10) and the AD circuit (11) is 2.

4. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 1, characterized in that The signal processing circuit includes a second MCU chip, a transponder antenna interface (12) and a transponder processor (13). The transponder antenna interface (12) is connected to the transponder reading antenna (4). The output end of the transponder antenna interface (12) is connected to the transponder processor (13). The transponder processor (13) is communicatively connected to the second MCU chip through a UART serial port.

5. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 1, characterized in that, The wheel axle speed sensor (3) is arranged near the wheels (7). The signal processing circuit includes a third MCU chip and a speed sensor interface (14). The input end of the speed sensor interface (14) is connected to the output end of the wheel axle speed sensor (3). The output end of the speed sensor interface (14) is connected to the third MCU chip.

6. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 5, characterized in that, The positioning module includes a Beidou satellite positioning unit (15). The Beidou satellite positioning unit (15) is connected to the third MCU chip through a UART serial port.

7. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 1, characterized in that, The communication module includes an Ethernet unit (17). The signal processing circuit is connected to a host computer through the Ethernet unit (17).

8. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 1, characterized in that, The equipment box (5) includes a box body and a box cover. The box body is a rectangular structure with a hollow interior and an open upper end. One side of the box cover is hinged to the open position of the box body, and the other side of the box cover is connected to the box body through a lock. The seat (6) includes a seat cushion and a backrest. The bottom end of the seat cushion is fixed to the box cover, and the upper end of the seat cushion is rotatably connected to the backrest. Two handles (19) are fixedly arranged on both sides of the box cover close to the seat cushion.

9. The detection mechanism of an intelligent detection trolley for railway signal equipment according to claim 8, characterized in that, An installation groove (20) is formed at the lower end of the box body. The installation groove (20) is a square groove, and through holes are formed in the installation groove (20). A bolt (21) is arranged in the through holes.

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