Railway vehicle brake control unit maintenance device and method

Abstract

The invention provides a railway vehicle brake control unit maintenance device and method. The device comprises a brake control unit, a server and a maintenance terminal. The brake control unit comprises a case, a back plate, a plurality of control plates and a wireless communication plate; each control board communicates with the wireless communication board through a bus on the back board in the case, and is used for performing brake control and sending brake data to the wireless communication board; the wireless communication board communicates with the server in a wireless mode and is used for generating early warning information according to the braking data, generating a feedback result according to a maintenance request of the maintenance terminal and the braking data and sending the feedback result and the early warning information to the maintenance terminal through the server; and the maintenance terminal communicates with the server through the Internet and is used for sending a maintenance request to the wireless communication board through the server and receiving a feedback result and early warning information. According to the invention, remote wireless maintenance of the brake control unit is realized, the cost is saved, and the maintenance efficiency of the brake system is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicle braking, and in particular to a rail vehicle braking control unit maintenance device and method. Background Art

[0002] The Brake Control Unit (BCU) of a rail vehicle is also called a brake controller. Its core function is to control the output of the corresponding braking force according to the brake level command issued by the control handle in the train driver's cab through logic and calculation, so as to slow down or stop the vehicle. According to the design requirements of the rail vehicle, each car can be equipped with 1 or 2 sets of brake control units.

[0003] At present, the maintenance of rail vehicle brake control units generally adopts Ethernet or CAN communication methods. It is necessary to connect the computer to the debug port of the brake control unit through an Ethernet cable or a CAN adapter before performing relevant maintenance operations. This traditional wired maintenance method requires a dedicated person to go to the site for operation, and it is necessary to report to the relevant management department in advance to apply for the operation time. It consumes a lot of manpower and time costs and has low efficiency. With the development of the economy and society, the scale of the rail transit industry has grown rapidly, and the pace of rail transit operation and maintenance has significantly accelerated. Rail vehicle users have put forward higher and higher requirements for the response speed of vehicle debugging, fault handling, and intelligent operation and maintenance. The disadvantages of the inefficiency of traditional wired maintenance methods have become more and more obvious. Summary of the invention

[0004] In view of the problems in the prior art, an embodiment of the present application provides a rail vehicle brake control unit maintenance device, which can at least partially solve the problems in the prior art.

[0005] In a first aspect, the present application provides a rail vehicle brake control unit maintenance device, including: a brake control unit, a server and a maintenance terminal;

[0006] The brake control unit comprises a chassis, a back plate, a plurality of control boards and a wireless communication board; the back plate is mounted at the bottom of the chassis;

[0007] Each of the control boards communicates with the wireless communication board via the bus of the backplane in the chassis, so as to perform brake control and send brake data to the wireless communication board;

[0008] The wireless communication board communicates with the server wirelessly, and is used to generate warning information according to the braking data and generate feedback results according to the maintenance request of the maintenance terminal and the braking data, and send the feedback results and the warning information to the maintenance terminal through the server;

[0009] The maintenance terminal communicates with the server via the Internet, and is used to send the maintenance request to the wireless communication board via the server, receive the feedback result and the warning information, and display them on an interface.

[0010] Furthermore, the wireless communication board includes a transceiver module, a processor, a wireless communication module and an antenna;

[0011] The transceiver module communicates with each of the control boards via the bus on the backplane, and is used to send a maintenance request from the processor to each of the control boards, obtain braking data of each of the control boards and send the braking data to the processor;

[0012] The processor is connected to the transceiver module, and is used to process the braking data, generate the warning information, and generate the feedback result according to the maintenance request and the braking data;

[0013] The wireless communication module is connected to the processor and the antenna, and is used to receive the maintenance request through the antenna and send the maintenance request to the processor, and send the warning information and the feedback result from the processor to the server through the antenna.

[0014] Furthermore, the wireless communication board further comprises: a storage module;

[0015] The storage module is connected to the processor and is used for storing the braking data.

[0016] Further, the warning information includes first warning information and second warning information; the processor includes: a first warning module;

[0017] The first warning module is used to record the response time of the brake cylinder pressure changing to a preset pressure when the braking state of the train is switched, and generate the first warning information if the response time is greater than the preset time.

[0018] Furthermore, the processor further includes: a second early warning module;

[0019] The second warning module is used to calculate the brake cylinder pressure drop within a preset time interval, and if the brake cylinder pressure drop is greater than a preset value, the second warning information is generated.

[0020] Furthermore, the maintenance request includes at least one of an information reading request, a data monitoring request, a relay control request, a software upgrade request and a data download request.

[0021] Furthermore, the wireless communication module adopts a 4G communication mode or a 5G communication mode.

[0022] Furthermore, the bus is a CAN bus.

[0023] Furthermore, the storage module is an SD card memory.

[0024] In a second aspect, the present application provides a rail vehicle brake control unit maintenance method, which is applied to the rail vehicle brake control unit maintenance device described in any of the above embodiments, comprising:

[0025] The maintenance terminal sends the maintenance request to the wireless communication board through the server;

[0026] The wireless communication board generates warning information according to the acquired braking data of each control board and generates a feedback result according to the maintenance request and the braking data, and sends the feedback result and the warning information to the maintenance terminal through the server;

[0027] The maintenance terminal receives the feedback result and the warning information and displays them on an interface.

[0028] Further, the wireless communication board includes a transceiver module, a processor, a wireless communication module and an antenna; the wireless communication board generates warning information according to the braking data and generates a feedback result according to the maintenance request of the maintenance terminal and the braking data, and sends the feedback result and the warning information to the maintenance terminal through the server, including:

[0029] The wireless communication module receives the maintenance request through the antenna and sends the maintenance request to the processor;

[0030] The transceiver module sends the maintenance request from the processor to each of the control boards, obtains the braking data of each of the control boards and sends the braking data to the processor;

[0031] The processor processes the braking data, generates the warning information, and generates the feedback result according to the maintenance request and the braking data;

[0032] The wireless communication module sends the warning information and the feedback result from the processor to the server through the antenna.

[0033] Further, the warning information includes first warning information and second warning information; the processor includes: a first warning module; the processor processes the braking data to generate the warning information including:

[0034] When the braking state of the train is switched, the first warning module records the response time for the brake cylinder pressure to change to a preset pressure, and generates the first warning information if the response time is greater than the preset time.

[0035] Furthermore, the processor further includes: a second warning module; the processor processes the braking data to generate the warning information including:

[0036] The second warning module calculates the brake cylinder pressure drop within a preset time interval, and generates the second warning information if the brake cylinder pressure drop is greater than a preset value.

[0037] The rail vehicle brake control unit maintenance device and method provided in the present application include a brake control unit, a server and a maintenance terminal; the brake control unit includes a chassis, a backplane, a plurality of control boards and a wireless communication board; the backplane is installed at the bottom of the chassis; each of the control boards communicates with the wireless communication board through a bus on the backplane in the chassis, for performing brake control and sending brake data to the wireless communication board; the wireless communication board communicates with the server in a wireless manner, for generating early warning information according to the brake data and generating feedback results according to the maintenance request of the maintenance terminal and the brake data, and sending the feedback results and the early warning information to the maintenance terminal through the server; the maintenance terminal communicates with the server through the Internet, for sending the maintenance request to the wireless communication board through the server, receiving the feedback results and the early warning information and displaying them on the interface, thereby realizing remote wireless maintenance of the brake control unit, eliminating the debugging cables and tools required for wired maintenance, saving labor costs, time costs and transportation costs, and greatly improving the maintenance efficiency of the brake system. In addition, through the control board and wireless communication board of the braking control unit, the braking control function and remote wireless maintenance function of the braking control unit can be made independent of each other; through the first warning module and the second warning module of the processor in the wireless communication board, the health status of the braking control unit can be evaluated to improve the safety of the braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a structural schematic diagram of a rail vehicle brake control unit maintenance device provided by an embodiment of the present application;

[0040] Figure 2 is a structural schematic diagram of a wireless communication board provided by an embodiment of the present application;

[0041] Figure 3 is a structural schematic diagram of a wireless communication board provided by an embodiment of the present application;

[0042] Figure 4 is a structural diagram of a processor provided in an embodiment of the present application;

[0043] Figure 5 is a structural diagram of a processor provided in an embodiment of the present application;

[0044] Figure 6 It is a flowchart of a rail vehicle brake control unit maintenance method provided by an embodiment of the present application;

[0045] Figure 7 It is a flow chart of a rail vehicle brake control unit maintenance method provided in one embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiments of the present application and their descriptions are used to explain the present application, but are not intended to limit the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0047] Figure 1 is a schematic diagram of the structure of a rail vehicle brake control unit maintenance device provided in an embodiment of the present application, such as Figure 1 As shown, the rail vehicle brake control unit maintenance device provided by the present application includes: a brake control unit 1, a server 2 and a maintenance terminal 3;

[0048] The brake control unit 1 comprises a chassis, a back panel, a plurality of control panels 11 and a wireless communication panel 12; the back panel is mounted at the bottom of the chassis;

[0049] Each of the control boards 11 communicates with the wireless communication board 12 via the bus 13 on the backplane in the chassis, so as to perform brake control and send brake data to the wireless communication board 12;

[0050] The wireless communication board 12 communicates with the server 2 wirelessly, and is used to generate warning information according to the braking data and generate feedback results according to the maintenance request of the maintenance terminal 3 and the braking data, and send the feedback results and the warning information to the maintenance terminal 3 through the server 2;

[0051] The maintenance terminal 3 communicates with the server 2 via the Internet, and is used to send the maintenance request to the wireless communication board 12 via the server 2, receive the feedback result and the warning information, and display them on an interface.

[0052] Specifically, the wireless communication board 12 and each control board 11 exchange data through the bus 13 of the chassis backplane. The control board 11 is used to implement the brake control function, and the wireless communication board 12 is used to maintain the brake control unit 1, and does not assume the brake control function. The wireless communication board 12 establishes two-way wireless communication with the server 2, thereby realizing the remote wireless maintenance function.

[0053] After the brake control unit 1 is powered on, the wireless communication board 12 automatically logs in to the server 2 through a preset communication method. After successful login, the brake control unit 1 is online on the server 2. The maintenance terminal 3 is connected to the server 2, and also logs in to the server 2 through the Internet, and requests the server 2 to obtain a list of all currently online brake control units 1, which is displayed on the maintenance terminal 3 interface.

[0054] The user selects the brake control unit 1 (one or more) to be accessed on the maintenance terminal 3 interface, and then the server 2 establishes a two-way wireless transmission channel between the maintenance terminal 3 and the brake control unit 1 to be accessed: the information sent by the maintenance terminal 3 is forwarded to the wireless communication board 12 of the brake control unit 1 through the server 2, and at the same time, the information sent by the wireless communication board 12 of the brake control unit 1 through the preset communication method is forwarded to the maintenance terminal 3 through the server 2. After completing the above preparations, the user can access the brake control unit 1 wirelessly to realize the maintenance function.

[0055] In one embodiment, the chassis is a 3U chassis.

[0056] In one embodiment, the bus 13 is a CAN bus.

[0057] In one embodiment, the braking control function includes receiving and processing braking instructions, calculating braking force, and adjusting braking force.

[0058] In one embodiment, the type and quantity of the control panels 11 can be flexibly configured according to specific braking function requirements.

[0059] In one embodiment, the maintenance terminal 3 is human-computer interaction software running on a computer.

[0060] In one embodiment, the remote wireless maintenance function includes version information reading, historical fault reading, real-time data monitoring, relay output control, software upgrade and data download, etc.

[0061] Figure 2 is a schematic diagram of the structure of a wireless communication board 12 provided in an embodiment of the present application. Figure 2 As shown, the wireless communication board 12 includes a transceiver module 121, a processor 122, a wireless communication module 123 and an antenna 124;

[0062] The transceiver module 121 communicates with each of the control boards 11 through the bus 13 on the backplane, and is used to send the maintenance request from the processor 122 to each of the control boards 11, obtain the braking data of each of the control boards 11 and send the braking data to the processor 122;

[0063] The processor 122 is connected to the transceiver module 121, and is used to process the braking data, generate the warning information, and generate the feedback result according to the maintenance request and the braking data;

[0064] The wireless communication module 123 is connected to the processor 122 and the antenna 124, and is used to receive the maintenance request through the antenna 124 and send the maintenance request to the processor 122, and send the warning information and the feedback result from the processor 122 to the server 2 through the antenna 124.

[0065] Specifically, the wireless communication module 123 can realize remote wireless communication with the server 2 , and the transceiver module 121 can realize data interaction with each control board 11 in the brake control unit 1 .

[0066] In one embodiment, the preset communication mode adopted by the wireless communication module 123 is a 4G communication mode or a 5G communication mode, etc., but the present application is not limited thereto.

[0067] In one embodiment, in order to improve the security and reliability of communication, the communication process is encrypted using the AES (Advanced Encryption Standard) encryption algorithm.

[0068] In one embodiment, the maintenance request includes at least one of an information reading request, a data monitoring request, a relay control request, a software upgrade request, and a data download request.

[0069] Specifically, when the maintenance request is an information reading request, the feedback result is the version information or historical fault information of the brake control unit 1; when the maintenance request is a data monitoring request, the feedback result is the real-time data of the monitoring variables of the target control board 11; when the maintenance request is a relay control request, the feedback result is the relay status; when the maintenance request is a software upgrade request, the feedback result is the software upgrade result; when the maintenance request is a data download request, the feedback result is a data file.

[0070] In one embodiment, the user can read the version information of the brake control unit 1 by remote wireless means. The version information includes the software name, software version number, software creation date, board name and hardware version number of each board (wireless communication board 12 and each control board 11) of the brake control unit 1. The specific process is as follows:

[0071] (1) The user operates the maintenance terminal 3 and sends a request to the server 2 to read the version information of the brake control unit 1;

[0072] (2) Server 2 sends a request to the brake control unit 1 to read version information;

[0073] (3) The wireless communication board 12 of the brake control unit 1 receives a request to read the version information via 5G, and forwards it to each control board 11 via the backplane CAN bus 13;

[0074] (4) Each control board 11 of the brake control unit 1 sends version information to the wireless communication board 12 via the backplane CAN bus 13;

[0075] (5) The wireless communication board 12 of the brake control unit 1 forwards the above version information to the server 2 via 5G;

[0076] (6) The server 2 forwards the version information of the brake control unit 1 to the maintenance terminal 3 for display.

[0077] In one embodiment, the user can read the historical faults of the brake control unit 1 by remote wireless means. The historical fault information includes the board where the fault is located, the fault code, the fault name, the state of the fault occurrence / disappearance and the corresponding time. The specific process is as follows:

[0078] (1) The user operates the maintenance terminal 3 and sends a request to the server 2 to read the historical fault information of the brake control unit 1;

[0079] (2) Server 2 sends a request to the brake control unit 1 to read historical fault information;

[0080] (3) The wireless communication board 12 of the brake control unit 1 receives a request to read historical fault information via 5G, and forwards it to each control board 11 via the backplane CAN bus 13;

[0081] (4) Each control board 11 of the brake control unit 1 sends historical fault information to the wireless communication board 12 via the backplane CAN bus 13;

[0082] (5) The wireless communication board 12 of the brake control unit 1 forwards the above historical fault information to the server 2 via 5G;

[0083] (6) The server 2 forwards the historical fault information of the brake control unit 1 to the maintenance terminal 3 for display.

[0084] In one embodiment, the user can monitor the data of the brake control unit 1 in real time through remote wireless means. The monitoring data includes the current speed, brake level and brake cylinder pressure, etc. The specific process is as follows:

[0085] (1) The user operates the maintenance terminal 3 to send a data monitoring request for the control board y in the brake control unit 1 (any control board 1 in the brake control unit 1) to the server 2. The monitoring request includes a monitoring variable list of the target control board y;

[0086] (2) Server 2 sends a data monitoring request for control board y to brake control unit 1;

[0087] (3) The wireless communication board 12 of the brake control unit 1 receives the data monitoring request of the control board y via 5G, and forwards it to the control board y via the backplane CAN bus 13;

[0088] (4) The control board y in the brake control unit 1 sends real-time data of monitoring variables to the wireless communication board 12 via the backplane CAN bus 13;

[0089] (5) The wireless communication board 12 of the brake control unit 1 forwards the real-time data of the control board y to the server 2 via 5G;

[0090] (6) The server 2 forwards the real-time data of the control board y in the brake control unit 1 to the maintenance terminal 3 for display.

[0091] In one embodiment, the user can control the relay output signal of the brake control unit 1 by remote wireless means. The output signal includes a zero speed signal, an overspeed signal, and a brake application status signal. The specific process is as follows:

[0092] (1) The user operates the maintenance terminal 3 to send a relay control request (an instruction to energize or de-energize the relay) of the control board y (any control board in the brake control unit 1) in the brake control unit 1 to the server 2;

[0093] (2) The server 2 forwards the relay control instruction of the control panel y to the brake control unit 1;

[0094] (3) The wireless communication board 12 of the brake control unit 1 receives the relay control request from the control board y via 5G, and forwards it to the control board y via the backplane CAN bus 13;

[0095] (4) The control board y of the brake control unit 1 controls the relay to be energized or de-energized according to the above relay control request, and feeds back the relay status.

[0096] In one embodiment, the user can implement the software upgrade of the brake control unit 1 by remote wireless means, and the specific process is as follows:

[0097] (1) The user operates the maintenance terminal 3 to send a software upgrade request for the control board y (any control board in the brake control unit 1) in the brake control unit 1 to the server 2;

[0098] (2) Server 2 sends a software upgrade request for control board y to brake control unit 1;

[0099] (3) The wireless communication board 12 of the brake control unit 1 receives the software upgrade request from the control board y via 5G, and forwards it to the control board y via the backplane CAN bus 13;

[0100] (4) The control board y of the brake control unit 1 sends a software upgrade response signal to the wireless communication board 12 through the backplane CAN bus 13, waiting for the program upgrade;

[0101] (5) The wireless communication board 12 of the brake control unit 1 forwards the software upgrade response signal to the server 2 via 5G;

[0102] (6) The server 2 forwards the software upgrade response signal to the maintenance terminal 3;

[0103] (7) The maintenance terminal 3 sends the executable program of the control board y in the brake control unit 1 to the server 2;

[0104] (8) The server 2 forwards the executable program of the control board y to the brake control unit 1;

[0105] (9) The wireless communication board 12 of the brake control unit 1 receives the executable program of the control board y via 5G, and forwards it to the control board y via the CAN bus 13;

[0106] (10) Complete the software upgrade of control board y and feedback the software upgrade results.

[0107] Figure 3 is a schematic diagram of the structure of a wireless communication board 12 provided in an embodiment of the present application. Figure 3 As shown, the wireless communication board 12 further includes: a storage module 125;

[0108] The storage module 125 is connected to the processor 122 and is used to store the braking data.

[0109] Specifically, the wireless communication board 12 periodically receives application data sent by each control board 11 through the bus 13 of the chassis backplane, and stores the application data in its own storage module 125. The maintenance terminal 3 can remotely download the data in the storage module 125 by connecting to the server 2 for user analysis.

[0110] In one embodiment, the storage module 125 is an SD card memory.

[0111] In one embodiment, the wireless communication board 12 of the brake control unit 1 periodically collects the application data sent by each control board 11 through the backplane CAN bus 13, and stores it in the form of a file to the SD card for data analysis. The user can read the SD card data remotely by wireless means, and the specific process is as follows:

[0112] (1) The user operates the maintenance terminal 3 to send a request to download the SD card data of the brake control unit 1 to the server 2;

[0113] (2) Server 2 sends a SD card data download request to the brake control unit 1;

[0114] (3) After receiving the SD card data download request via 5G, the wireless communication board 12 of the brake control unit 1 sends the SD card data file to the server 2 via 5G;

[0115] (4) The server 2 forwards the SD card data file to the maintenance terminal 3.

[0116] Figure 4 is a schematic diagram of the structure of the processor 122 provided in an embodiment of the present application, such as Figure 4 As shown, the warning information includes first warning information and second warning information; the processor 122 includes: a first warning module 1221;

[0117] The first warning module 1221 is used to record the response time of the brake cylinder pressure changing to a preset pressure when the braking state of the train is switched, and generate the first warning information if the response time is greater than the preset time.

[0118] Specifically, the wireless communication board 12 obtains the train braking command and the status information of the braking control unit 1 in real time through the backplane CAN bus 13 of the braking control unit 1, evaluates the health status of the braking control unit 1 by analyzing the relevant data, and generates relevant warning information when the state of the braking control unit 1 is abnormal and reports it to the maintenance terminal 3 through the server 2 for pop-up prompts. The first warning information includes the brake application delay warning information and the brake relief delay warning information.

[0119] In one embodiment, the status information includes train speed, braking / traction status, brake cylinder pressure of the brake control unit 1 and brake air cylinder pressure of the brake control unit 1 .

[0120] In one embodiment, when the train changes from a non-braking state to an emergency braking state, the wireless communication board 12 starts timing; when the brake cylinder pressure rises to a first preset pressure (90% of the target pressure, and the preset value can be adjusted according to the application conditions), the wireless communication board 12 stops timing and obtains the time T1; if T1 is greater than 3 seconds (the threshold can be adjusted according to the application conditions), the wireless communication board 12 determines that there is a delay in the application of the brake, generates a brake application delay warning message and sends it to the server 2 via 5G; the server 2 forwards the brake application delay warning message to the maintenance terminal 3 for a pop-up prompt.

[0121] In one embodiment, when the train changes from a braking state to a non-braking state, the wireless communication board 12 starts timing; when the brake cylinder pressure drops below a second preset pressure (20 kPa, which can be adjusted according to the application conditions), the wireless communication board 12 stops timing and obtains the time T2; if T2 is greater than 3 seconds (this threshold can be adjusted according to the application conditions), the wireless communication board 12 determines that there is a delay in braking relief, generates a braking relief delay warning message and sends it to the server 2 via 5G; the server 2 forwards the braking relief delay warning message to the maintenance terminal 3 for a pop-up prompt.

[0122] Figure 5 is a schematic diagram of the structure of the processor 122 provided in an embodiment of the present application, such as Figure 5 As shown, the processor 122 further includes: a second early warning module 1222;

[0123] The second warning module 1222 is used to calculate the brake cylinder pressure drop within a preset time interval, and if the brake cylinder pressure drop is greater than a preset value, the second warning information is generated.

[0124] Specifically, the second warning information is airtightness warning information. When the train is in a non-braking state and the brake control unit 1 is not isolated, the wireless communication board 12 performs airtightness monitoring of the brake control unit 1. The specific process is as follows:

[0125] Record the current brake cylinder pressure P1 and wait for a preset time interval; record the current brake cylinder pressure P2 after the preset time interval; calculate the pressure drop P3=P1-P2 of the brake cylinder within the preset time interval; if P3 is greater than the preset value (20kPa, the preset value can be adjusted according to the application conditions), the wireless communication board 12 determines that the air tightness is abnormal, generates air tightness warning information and sends it to the server 2 via 5G; the server 2 forwards the air tightness warning information to the maintenance terminal 3 for a pop-up prompt.

[0126] In one embodiment, the preset time interval is 5 minutes, but the present application is not limited thereto.

[0127] The present application provides a rail vehicle brake control unit maintenance device, which includes a brake control unit, a server and a maintenance terminal; the brake control unit includes a chassis, a backplane, a plurality of control boards and a wireless communication board; the backplane is installed at the bottom of the chassis; each of the control boards communicates with the wireless communication board through a bus on the backplane in the chassis, so as to perform brake control and send brake data to the wireless communication board; the wireless communication board communicates with the server in a wireless manner, so as to generate early warning information according to the brake data and generate feedback results according to the maintenance request of the maintenance terminal and the brake data, and send the feedback results and the early warning information to the maintenance terminal through the server; the maintenance terminal communicates with the server through the Internet, so as to send the maintenance request to the wireless communication board through the server, receive the feedback results and the early warning information and display them on an interface, thereby realizing remote maintenance of the brake control unit, eliminating the debugging cables and tools required for wired maintenance, saving labor costs, time costs and transportation costs, and greatly improving the maintenance efficiency of the brake system. In addition, through the control board and wireless communication board of the braking control unit, the braking function and remote wireless maintenance function of the braking control unit can be made independent of each other; through the first early warning module and the second early warning module of the processor in the wireless communication board, the health status of the control board can be evaluated to improve the safety of the braking system.

[0128] In addition, the present application also provides a rail vehicle brake control unit maintenance method, which completes the rail vehicle brake control unit maintenance by using the rail vehicle brake control unit maintenance device described in the above embodiment.

[0129] Figure 6 FIG. 1 is a flow chart of a rail vehicle brake control unit maintenance method provided by an embodiment of the present application, such as Figure 6 As shown, the rail vehicle brake control unit maintenance method provided by the present application includes:

[0130] S601: The maintenance terminal sends the maintenance request to the wireless communication board through the server;

[0131] S602: the wireless communication board generates warning information according to the acquired braking data of each control board and generates a feedback result according to the maintenance request and the braking data, and sends the feedback result and the warning information to the maintenance terminal through the server;

[0132] S603: The maintenance terminal receives the feedback result and the warning information and displays them on an interface.

[0133] Specifically, the wireless communication board and each control board exchange data through the bus of the chassis backplane. The control board is used to realize the brake control function, and the wireless communication board is used to maintain the brake control unit, and does not bear the brake control function. The wireless communication board establishes two-way wireless communication with the server, thereby realizing the remote wireless maintenance function.

[0134] After the brake control unit is powered on, the wireless communication board automatically logs into the server through the preset communication method. After successful login, the brake control unit is online on the server. The maintenance terminal connects to the server and also logs into the server through the Internet, and requests the server to obtain a list of all currently online brake control units, which is displayed on the maintenance terminal interface.

[0135] The user selects the brake control unit (or units) to be accessed on the maintenance terminal interface, and then the server establishes a two-way wireless transmission channel between the maintenance terminal and the brake control unit to be accessed: the information sent by the maintenance terminal is forwarded to the wireless communication board of the brake control unit through the server, and at the same time, the information sent by the wireless communication board of the brake control unit through the preset communication method is forwarded to the maintenance terminal through the server. After completing the above preparations, the user can access the brake control unit wirelessly to realize the maintenance function.

[0136] Figure 7 FIG. 1 is a flow chart of a rail vehicle brake control unit maintenance method provided by an embodiment of the present application, such as Figure 7 As shown, S602 includes:

[0137] S701: The wireless communication module receives the maintenance request through the antenna and sends the maintenance request to the processor;

[0138] S702: the transceiver module sends the maintenance request from the processor to each of the control boards, obtains the braking data of each of the control boards and sends the braking data to the processor;

[0139] S703: the processor processes the braking data, generates the warning information, and generates the feedback result according to the maintenance request and the braking data;

[0140] S704: The wireless communication module sends the warning information and the feedback result from the processor to the server via the antenna.

[0141] Specifically, the wireless communication module can realize remote wireless communication with the server, and the transceiver module can realize data interaction with each control board in the brake control unit.

[0142] In one embodiment, the preset communication mode adopted by the wireless communication module is a 4G communication mode or a 5G communication mode, etc., but the present application is not limited thereto.

[0143] In one embodiment, in order to improve the security and reliability of communication, the communication process is encrypted using the AES (Advanced Encryption Standard) encryption algorithm.

[0144] In one embodiment, the maintenance request includes at least one of an information reading request, a data monitoring request, a relay control request, a software upgrade request, and a data download request.

[0145] Specifically, when the maintenance request is an information reading request, the feedback result is the version information or historical fault information of the brake control unit; when the maintenance request is a data monitoring request, the feedback result is the real-time data of the monitoring variables of the target control board; when the maintenance request is a relay control request, the feedback result is the relay status; when the maintenance request is a software upgrade request, the feedback result is the software upgrade result; when the maintenance request is a data download request, the feedback result is a data file.

[0146] In one embodiment, the warning information includes first warning information and second warning information; the processor processes the braking data to generate the warning information including:

[0147] When the braking state of the train is switched, the processor records the response time for the brake cylinder pressure to change to a preset pressure, and generates the first warning information if the response time is greater than the preset time.

[0148] Specifically, the wireless communication board obtains the train braking command and the status information of the brake control unit in real time through the backplane CAN bus of the brake control unit, evaluates the health status of the brake control unit by analyzing relevant data, and generates relevant warning information when the state of the brake control unit is abnormal and reports it to the maintenance terminal through the server for pop-up prompts. The first warning information includes brake application delay warning information and brake relief delay warning information.

[0149] In one embodiment, the status information includes train speed, braking / traction status, brake cylinder pressure of the brake control unit, brake air cylinder pressure of the brake control unit, etc.

[0150] In one embodiment, when the train changes from a non-braking state to an emergency braking state, the wireless communication board starts timing; when the brake cylinder pressure rises to a first preset pressure (90% of the target pressure, which can be adjusted according to the operating conditions), the wireless communication board stops timing and obtains the time T1; if T1 is greater than 3 seconds (this threshold can be adjusted according to the specific vehicle model), the wireless communication board determines that there is a delay in the application of the brakes, generates a brake application delay warning message and sends it to the server via 5G; the server forwards the brake application delay warning message to the maintenance terminal for a pop-up prompt.

[0151] In one embodiment, when the train changes from a braking state to a non-braking state, the wireless communication board starts timing; when the brake cylinder pressure drops below a second preset pressure (20 kPa, which can be adjusted according to the operating conditions), the wireless communication board stops timing and obtains the time T2; if T2 is greater than 3 seconds (this threshold can be adjusted according to the specific vehicle model), the wireless communication board determines that there is a delay in braking relief, generates a braking relief delay warning message and sends it to the server via 5G; the server forwards the braking relief delay warning message to the maintenance terminal for a pop-up prompt.

[0152] In one embodiment, the processor processes the braking data to generate the warning information, including:

[0153] The processor calculates the brake cylinder pressure drop within a preset time interval, and generates the second warning information if the brake cylinder pressure drop is greater than a preset value.

[0154] Specifically, the second warning information is an airtightness warning information. When the train is in a non-braking state and the brake control unit is not isolated, the wireless communication board performs airtightness monitoring of the brake control unit. The specific process is as follows:

[0155] Record the current brake cylinder pressure P1 and wait for the preset time interval; record the current brake cylinder pressure P2 after the preset time interval; calculate the pressure drop of the brake cylinder within the preset time interval P3 = P1-P2; if P3 is greater than the preset value (20kPa, the preset value can be adjusted according to the application conditions), the wireless communication board will determine that the air tightness is abnormal, generate air tightness warning information and send it to the server via 5G; the server will forward the air tightness warning information to the maintenance terminal for a pop-up prompt.

[0156] In one embodiment, the preset time interval is 5 minutes, but the present application is not limited thereto.

[0157] The present application provides a rail vehicle brake control unit maintenance method, wherein the maintenance terminal sends the maintenance request to the wireless communication board through the server; the wireless communication board generates warning information based on the acquired braking data of each control board and generates feedback results based on the maintenance request and the braking data, and sends the feedback results and the warning information to the maintenance terminal through the server; the maintenance terminal receives the feedback results and the warning information and displays them on the interface, thereby realizing remote maintenance of the brake control unit, eliminating the debugging cables and tools required for wired maintenance, saving labor costs, time costs and transportation costs, and greatly improving the maintenance efficiency of the brake system. In addition, through the control board and wireless communication board of the brake control unit, the braking function and remote wireless maintenance function of the brake control unit can be made independent of each other; through the first warning module and the second warning module of the processor in the wireless communication board, the health status of the control board can be evaluated to improve the safety of the brake system.

[0158] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0159] The descriptions with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. The order of steps involved in each embodiment is used to schematically illustrate the implementation of the present application, and the order of steps therein is not limited and may be appropriately adjusted as needed.

[0160] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0161] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A rail vehicle brake control unit maintenance device, characterized in that: include: Braking control unit, server and maintenance terminal; The brake control unit includes a chassis, a back panel, a plurality of control panels and a wireless communication board; The back plate is mounted on the bottom of the chassis; Each of the control boards communicates with the wireless communication board via the bus on the backplane in the chassis to perform brake control and send brake data to the wireless communication board; The wireless communication board communicates with the server wirelessly, and is used to generate warning information according to the braking data and generate feedback results according to the maintenance request of the maintenance terminal and the braking data, and send the feedback results and the warning information to the maintenance terminal through the server; The maintenance terminal communicates with the server via the Internet, and is used to send the maintenance request to the wireless communication board via the server, receive the feedback result and the warning information, and display them on an interface.

2. The rail vehicle brake control unit maintenance device according to claim 1, characterized in that: The wireless communication board includes a transceiver module, a processor, a wireless communication module and an antenna; The transceiver module communicates with each of the control boards via the bus on the backplane, and is used to send a maintenance request from the processor to each of the control boards, obtain braking data of each of the control boards and send the braking data to the processor; The processor is connected to the transceiver module, and is used to process the braking data, generate the warning information, and generate the feedback result according to the maintenance request and the braking data; The wireless communication module is connected to the processor and the antenna, and is used to receive the maintenance request through the antenna and send the maintenance request to the processor, and send the warning information and the feedback result from the processor to the server through the antenna.

3. The rail vehicle brake control unit maintenance device according to claim 2, characterized in that: The wireless communication board further includes: a storage module; The storage module is connected to the processor and is used for storing the braking data.

4. The rail vehicle brake control unit maintenance device according to claim 2, characterized in that: The warning information includes first warning information and second warning information; the processor includes: a first warning module; The first warning module is used to record the response time of the brake cylinder pressure changing to a preset pressure when the braking state of the train is switched, and generate the first warning information if the response time is greater than the preset time.

5. The rail vehicle brake control unit maintenance device according to claim 4, characterized in that: The processor further includes: a second early warning module; The second warning module is used to calculate the brake cylinder pressure drop within a preset time interval, and if the brake cylinder pressure drop is greater than a preset value, the second warning information is generated.

6. The rail vehicle brake control unit maintenance device according to claim 1, characterized in that: The maintenance request includes at least one of an information reading request, a data monitoring request, a relay control request, a software upgrade request, and a data download request.

7. The rail vehicle brake control unit maintenance device according to claim 2, characterized in that: The wireless communication module adopts a 4G communication mode or a 5G communication mode.

8. The rail vehicle brake control unit maintenance device according to claim 1, characterized in that: The bus is a CAN bus.

9. The rail vehicle brake control unit maintenance device according to claim 3, characterized in that: The storage module is an SD card memory.

10. A rail vehicle brake control unit maintenance method, applied to the rail vehicle brake control unit maintenance device according to any one of claims 1 to 9, characterized in that: include: The maintenance terminal sends the maintenance request to the wireless communication board through the server; The wireless communication board generates warning information according to the acquired braking data of each control board and generates a feedback result according to the maintenance request and the braking data, and sends the feedback result and the warning information to the maintenance terminal through the server; The maintenance terminal receives the feedback result and the warning information and displays them on an interface.

11. The rail vehicle brake control unit maintenance method according to claim 10, characterized in that: The wireless communication board includes a transceiver module, a processor, a wireless communication module and an antenna; the wireless communication board generates warning information according to the braking data and generates a feedback result according to the maintenance request of the maintenance terminal and the braking data, and sends the feedback result and the warning information to the maintenance terminal through the server, including: The wireless communication module receives the maintenance request through the antenna and sends the maintenance request to the processor; The transceiver module sends the maintenance request from the processor to each of the control boards, obtains the braking data of each of the control boards and sends the braking data to the processor; The processor processes the braking data, generates the warning information, and generates the feedback result according to the maintenance request and the braking data; The wireless communication module sends the warning information and the feedback result from the processor to the server through the antenna.

12. The rail vehicle brake control unit maintenance method according to claim 11, characterized in that: The warning information includes first warning information and second warning information; The processor processes the braking data to generate the warning information, including: When the braking state of the train is switched, the processor records the response time for the brake cylinder pressure to change to a preset pressure, and generates the first warning information if the response time is greater than the preset time.

13. The rail vehicle brake control unit maintenance method according to claim 12, characterized in that: The processor processes the braking data to generate the warning information, including: The processor calculates the brake cylinder pressure drop within a preset time interval, and generates the second warning information if the brake cylinder pressure drop is greater than a preset value.

Images