Device for monitoring condition of contact suspension and controlling current collector of vehicle

Abstract

FIELD: electric rolling stock.SUBSTANCE: invention relates to diagnostics of the state of the contact network and control of current collectors of electric rolling stock. A device for monitoring the state of a contact suspension and controlling a pantograph of a vehicle comprises a measuring unit installed on the roof of the front part of the vehicle, including video cameras and a lidar, a processing unit, a control unit for emergency lowering of the pantograph, a comparison unit, a moving average calculation unit, a delay element connected to a vehicle speed sensor, and a pantograph pressure regulator. The output of the measuring unit is connected to the input of the processing unit, the output of which is connected to the input of the emergency lowering control unit of the pantograph. One input of the comparison block is connected to the output of the processing block directly, and the second one is connected through the moving average calculation block. The output of the comparison block is connected via a delay element to the input of the controller for pressing the current collector onto the contact wire. In this case, the measuring unit and the current collector are located along the length of the vehicle.EFFECT: increasing the stability of current collection and reducing the wear rate of the contact wire and current collector.1 cl, 1 dwg

Description

[0001] The invention relates to the field of railway transport, namely to devices for diagnosing the state of the contact network and adaptive control of pantographs of electric rolling stock, primarily high-speed ones.

[0002] The closest to the claimed device is a device for monitoring the state of the overhead contact suspension and controlling the pantograph of a vehicle, comprising a measuring unit mounted on the roof of the frontal part of the vehicle, including video cameras and a lidar, the output of which is connected to the input of the processing unit, the output of which is connected to the input of the control unit for the emergency lowering of the pantograph, wherein the measuring unit and the pantograph are spaced along the length of the vehicle (Patent No. CN 116605251 A for invention (CN), IPC B60M 1 / 13, B61C 17 / 00, B61L 15 / 00, B61L 23 / 00, G01D 21 / 02, G01R 31 / 08 Catenary fault detection and vehicle control device, train and method / G. Chao; W. Yankui; W. Tiannong; Z. Xinying; H. Qingjun / / No. 202310639242.4; Claimed on May 31, 2023; Published on August 18, 2023.).

[0003] A disadvantage of the known device for monitoring the condition of the contact suspension and controlling the pantograph of a vehicle is the lack of the ability to adjust the force of pressure of the pantograph on the contact wire during the movement of the electric rolling stock, since at high speeds even a slight decrease in the height of the contact wire leads to a significant increase in the vertical dynamic forces in the contact, leading to increased wear, impacts and separation of the runner from the contact wire with the occurrence of an arc and increased electrical erosion wear of the contact pairs.

[0004] The aim of the invention is to increase the stability of current collection and reduce the wear rate of the contact wire and current collector by quickly changing the pressing force of the current collector before it enters the zone with a deviation in the height of the contact wire.

[0005] The stated objective is achieved in that the known device for monitoring the state of the contact suspension and controlling the pantograph of a vehicle, comprising a measuring unit mounted on the roof of the frontal part of the vehicle, including video cameras and a lidar, the output of which is connected to the input of a processing unit, the output of which is connected to the input of a control unit for the emergency lowering of the pantograph, wherein the measuring unit and the pantograph are spaced along the length of the vehicle, supplemented by a comparison unit, one input of which is connected to the output of the processing unit directly, and the second - through a moving average calculation unit, and the output of the comparison unit through a delay element connected to a vehicle speed sensor is connected to the input of a regulator for pressing the pantograph on the contact wire.

[0006] The figure shows a functional diagram of the device for monitoring the state of the contact suspension and controlling the pantograph of a vehicle.

[0007] A device for monitoring the state of a contact suspension and controlling a pantograph of a vehicle, comprising a measuring unit 2 mounted on the roof of the frontal part of the vehicle 1, including video cameras and a lidar, the output of which is connected to the input of a processing unit 3, the output of which is connected to the input of a control unit for the emergency lowering of the pantograph 4, wherein the measuring unit 2 and the pantograph 5 are spaced along the length of the vehicle 1. In this case, a comparison unit 6, one input of which is connected to the output of the processing unit 3 directly, and the second - through a moving average calculation unit 7, and the output of the comparison unit 6 through a delay element 8, connected to a speed sensor 9 of the vehicle, is connected to the input of a regulator for pressing the pantograph on the contact wire 10.

[0008] The device operates as follows.

[0009] As the vehicle moves, measuring unit 2 continuously scans the overhead contact wire and transmits video and lidar data to recording and processing unit 3, which processes them to obtain information about the overhead contact wire's vertical position at discrete points along the track. Recording and processing unit 3 generates a primary digital stream and sends it to comparison unit 6 and emergency lowering control unit 4 for emergency response in the event of critical deviations (e.g., a sudden change in the overhead contact wire's vertical position, indicating a malfunction) or objects in the pantograph runner's path (an overturned clamp, retainer, etc.).

[0010] The measurement array obtained over the specified interval is accumulated and transmitted to moving average calculation block 7, which calculates the current average height value. The smoothed average height value is fed to the first input of comparison block 6, and the current measured value is fed to the second input of comparison block 6. Comparison block 6 calculates the deviation of the current overhead wire height position relative to the average value and transmits the value to delay block 8.

[0011] At the same time, the delay unit 8 receives information about the current speed of the vehicle from the speed sensor 9. The delay unit 8 calculates the delay time and holds the signal for the time required for the pantograph 5 to reach the point of change in the height position of the contact wire, after which it outputs it to the input of the pressure control unit 10. The pressure control unit 10, based on the received signal, generates a control action on the pantograph 5 (for example, a change in the pressure in the standard pneumatic element of the pantograph), changing the force of its pressing to the contact wire in proportion to the magnitude of the deviation.

[0012] Thus, by the time the current collector 5 approaches the point on the track where the deviation was recorded, the pressing force has already been adjusted, which ensures compensation, stable current collection and reduced wear.

[0013] The implementation of the proposed device will improve current collection stability and reduce wear on the overhead wire and pantograph by promptly adjusting the pantograph's pressure before it enters an area with overhead wire height deviation. It can be used on high-speed electric trains, as well as on traction rolling stock operating on sections with frequent overhead wire height variations.

Claims

A device for monitoring the state of a contact suspension and controlling a pantograph of a vehicle, comprising a measuring unit mounted on the roof of the frontal part of the vehicle, including video cameras and a lidar, the output of which is connected to the input of a processing unit, the output of which is connected to the input of a control unit for the emergency lowering of the pantograph, wherein the measuring unit and the pantograph are spaced along the length of the vehicle, characterized in that it is supplemented by a comparison unit, one input of which is connected to the output of the processing unit directly, and the second - through a unit for calculating a moving average, and the output of the comparison unit through a delay element connected to a vehicle speed sensor is connected to the input of a regulator for pressing the pantograph on the contact wire.

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