Rail vehicle braking command redundant transmission system and method

Abstract

The application discloses a kind of track vehicle brake instruction redundancy transmission systems and methods, comprising: the first central control device and the second central control device being set in each cab, and the communication between the two is connected by network line;Terminal control device and brake system are set in each passenger room, and the communication between the two is connected by line, simultaneously, also by network line connection communication;The driver controller in each cab is connected with the first central control device and the second central control device in the cab by line respectively;Each driver controller is connected with the brake system in each passenger room by line;The first central control device and the second central control device in each cab are connected with the communication of terminal control device of each passenger room by network line respectively.The application can ensure that driver controller brake instruction can be transmitted to each car brake system in real time, when network exception also can guarantee that vehicle is parked in time, guarantees driving safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle braking control, in particular to a rail vehicle braking command redundant transmission system and method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The rail vehicle braking system can realize the speed reduction and parking of the vehicle, and ensure that the brake command of the controller can be transmitted to each vehicle braking system in real time, effectively and without difference, which is of great significance to the safe operation of the rail vehicle.

[0004] In the prior art, the transmission of the brake system command is through a separate network transmission or a separate hard-wire transmission, and such a transmission has poor reliability. Once the transmission path fails, the rail vehicle cannot obtain accurate brake commands, thereby affecting the safe operation of the vehicle.

[0005] Although the prior art discloses a brake command transmission mode assisted by a hard-wire, in this mode, the hard-wire transmission as an auxiliary can only transmit emergency brake commands or only transmit part of the brake commands, which is suitable for emergency traction mode, such as: only 100% maximum brake command and 50% minimum brake command can be transmitted, which cannot meet the transmission of all brake commands. At the same time, when the network abnormally switches to the hard-wire transmission, it needs to switch to the emergency brake mode, which prolongs the time required for braking, which is not conducive to the safe and stable operation of the rail vehicle. SUMMARY

[0006] In order to solve the above problems, the present application provides a rail vehicle braking command redundant transmission system and method, which can transmit brake commands to each vehicle braking system through multiple redundant transmission paths; each vehicle braking system compares the brake commands obtained through various transmission paths in real time, adopts the largest brake command, and the transmission path switching has no time difference, which ensures that the vehicle brake command is real-time and effective, and guarantees the safe operation of the vehicle.

[0007] According to a first aspect of the embodiment of the present application, a rail vehicle braking command redundant transmission system is provided, comprising:

[0008] A first central control device and a second central control device are arranged in each cab; the first central control device and the second central control device are redundant to each other and are connected in communication through a network line;

[0009] The terminal control device and the braking system are connected through a line and also communicate through a network line.

[0010] The driver controller in each driver room is connected to the first central control device and the second central control device in the driver room through a line.

[0011] The first central control device and the second central control device in each driver room are connected to the terminal control device in each passenger room through a network line.

[0012] The braking instruction from the driver controller can be transmitted to the braking system in each passenger room through different transmission paths.

[0013] When the braking levels transmitted through different paths are different, the braking system selects the maximum value among the received braking levels to control the braking of the corresponding passenger room.

[0014] The braking instruction from the driver controller is transmitted to the braking system in each passenger room through the following transmission paths:

[0015] The braking instruction from the driver controller is transmitted to the first central control device and the second central control device connected to it through a line.

[0016] The first central control device and the second central control device respectively transmit the received braking instruction to the terminal control device in each passenger room through a network line.

[0017] Alternatively, the braking instruction from the driver controller is transmitted to the first central control device and the second central control device connected to it through a line.

[0018] The first central control device and the second central control device respectively transmit the received braking instruction to the terminal control device in each passenger room through a network line.

[0019] Or, the brake instruction sent by the controller is transmitted to the brake system of each passenger room through a line to realize brake control of the passenger room.

[0020] According to a second aspect of the embodiment of the present application, a rail vehicle brake instruction redundant transmission method is provided, comprising:

[0021] The brake instruction of the controller room can be transmitted to the brake system of each passenger room through different transmission paths, and priority is set between each transmission path, when the brake level of each path is the same, the brake system preferentially receives the brake instruction transmitted by the transmission path with the highest priority; when one of the transmission paths is abnormal, the brake system automatically receives the brake instruction transmitted by the transmission path with the highest priority among the remaining transmission paths;

[0022] When the brake levels of each path are different, the brake system selects the maximum value in the received brake levels to control the brake of the corresponding passenger room.

[0023] The transmission paths include:

[0024] Path ①: the brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through a line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through a network line;

[0025] Path ②: the brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through a line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through a line;

[0026] Path ③: the brake instruction sent by the controller is directly transmitted to the brake system of each passenger room through a line.

[0027] According to a third aspect of the embodiment of the present application, a rail vehicle is provided, comprising the above-mentioned rail vehicle brake instruction redundant transmission system.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] (1) the application transmits the brake instruction of the controller to the brake system of each passenger car through three redundant transmission paths by combining network communication and circuit communication, ensures that the brake instruction of the controller can be transmitted to the brake system of each car in real time, realizes time difference-free switching of the transmission path when the network is abnormal, ensures that the vehicle stops in time, and each transmission path can realize real-time transmission of all brake instructions, ensuring driving safety.

[0030] (2) the three redundant transmission paths of the application are transmitted simultaneously, when one transmission path is abnormal, the transmission path is switched according to the priority principle, and there is no time difference when the paths are switched; ensure the timeliness and reliability of data transmission, ensure the comprehensiveness of transmission information and the consistency of vehicle signals.

[0031] (3) the brake system of each passenger car compares the brake instructions obtained by various transmission paths in real time, and adopts the largest brake instruction, which fully ensures the safety of vehicle braking.

[0032] The advantages of the additional aspects of the application will be partially given in the following description, partially become obvious from the following description, or be known by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 the structure diagram of the redundant transmission system of the brake instruction of the rail vehicle in the embodiment of the application;

[0034] Figure 2 the transmission process diagram when the three paths are normal in the embodiment of the application;

[0035] Figure 3 the transmission process diagram when two paths are normal in the embodiment of the application;

[0036] Figure 4 the transmission process diagram when one path is normal in the embodiment of the application. DETAILED DESCRIPTION

[0037] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0039] Embodiment One

[0040] In one or more embodiments, a rail vehicle braking instruction redundant transmission system is disclosed, in combination Figure 1 , specifically comprising:

[0041] A first central control device and a second central control device are arranged in each cab; the first central control device and the second central control device are redundant to each other and are connected in communication through a network line;

[0042] A terminal control device and a braking system are arranged in each passenger compartment; the terminal control device and the braking system are connected through a line, and the terminal control device and the braking system are also connected in communication through a network line;

[0043] Each cab controller is connected with the first central control device and the second central control device in the cab through a line; each cab controller is connected with the braking system in each passenger compartment through a line;

[0044] The first central control device and the second central control device in each cab are connected in communication with the terminal control device in each passenger compartment through a network line.

[0045] Figure 1 In this embodiment, the cab 1 and the cab 2 are two cabs at the front and the rear of the rail vehicle, and one of the two cabs is selected for operation when the rail vehicle is running, and the operation is usually performed in the cab at the front.

[0046] In this embodiment, when the network line is connected in communication, the network line adopts a double network cable (redundant to each other) mode to ensure the double reliability of network communication; the network cable can adopt the form of optical fiber, Ethernet and WTB cable, etc.

[0047] In this embodiment, the terminal control device and the braking system are connected through a line, and each cab controller is connected with the braking system in each passenger compartment through a line; there are multiple connection lines, which can simultaneously transmit various different braking instructions to ensure the accuracy and comprehensiveness of instruction transmission.

[0048] Based on the above structure, the brake instruction of the controller can be transmitted to the brake system of the passenger car through three paths, which are as follows:

[0049] Path ①: The brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through the line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through the network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through the network line.

[0050] Path ②: The brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through the line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through the network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through the line.

[0051] Path ③: The brake instruction sent by the controller is directly transmitted to the brake system of each passenger room through the line.

[0052] The priority order of the above three paths is: path ①> path ②> path ③, because the network transmission method transmits a large amount of data, has high transmission speed and transmits comprehensive information, so the priority of network communication is higher than that of line communication.

[0053] When the network communication between the devices is normal, the brake instruction is transmitted to the brake system through paths ①-③ at the same time, it is judged whether the brake instructions transmitted through the three paths are consistent, if consistent, such as all 50% of the maximum brake instruction, the brake instruction corresponding to the transmission path with the highest priority is adopted; if not consistent, the maximum value in the brake instruction is adopted.

[0054] When the network communication between the terminal device and the brake system is abnormal, the brake instruction can only be transmitted to the brake system through paths ② and ③; the above method is used to judge whether the instructions are consistent, if consistent, the brake instruction corresponding to the transmission path with the highest priority is adopted; if not consistent, the maximum value in the brake instruction is adopted.

[0055] When the network ring communication is abnormal and the terminal device cannot obtain the brake instruction, the brake instruction can only be transmitted to the brake system through path ③, and the brake instruction of this path is adopted.

[0056] The switching of the three brake instruction transmission paths has no time difference, ensuring real-time transmission of the brake instruction.

[0057] Example Two

[0058] In one or more embodiments, a track vehicle brake instruction redundancy transmission method is disclosed, specifically comprising:

[0059] The brake instruction of the control room can be transmitted to the brake system of each passenger room through different transmission paths, and priorities are set between the transmission paths. When the brake levels transmitted by each path are the same, the brake system preferentially adopts the brake instruction transmitted by the transmission path with the highest priority. When an abnormality occurs in one of the transmission paths, the brake system automatically adopts the brake instruction transmitted by the transmission path with the highest priority among the remaining transmission paths.

[0060] When the brake levels transmitted by each path are different, the brake system selects the maximum value among the received brake levels to perform brake control of the corresponding passenger room.

[0061] Specifically, in combination with Figure 2 , the brake instruction of the control room can be transmitted to the brake system of each passenger room through three different transmission paths. It is determined whether the transmission of each path is normal. If the transmission of the three paths is normal, it is determined whether the brake instructions of the three paths are the same. If they are the same, the brake system adopts the brake instruction of the transmission path with the highest priority to perform brake control. If they are not the same, the brake system adopts the maximum brake instruction to perform brake control.

[0062] In combination with Figure 3 , if only two of the three paths are normally transmitted, it is determined whether the brake instruction values of the two paths are the same. If they are the same, the brake system adopts the brake instruction of the transmission path with the highest priority to perform brake control. If they are not the same, the brake system adopts the maximum brake instruction to perform brake control.

[0063] In combination with Figure 4 , if only one of the three paths is normally transmitted, the brake system adopts the brake instruction value of the normally transmitted path to perform brake control.

[0064] The embodiment adopts a data transmission mode combining network communication and circuit communication. The brake instruction of the controller can be transmitted to the brake system of each passenger car through three redundant transmission paths. The brake instruction of the controller can be transmitted to the brake system of each passenger car in real time. When the network is abnormal, the vehicle can be stopped in time to ensure driving safety.

[0065] The brake system of each passenger car compares the brake instructions obtained through various transmission paths in real time, adopts the maximum brake instruction, and fully ensures the safety of vehicle braking.

[0066] Embodiment Three

[0067] In one or more embodiments, a rail transit vehicle is disclosed, comprising the rail vehicle brake instruction redundant transmission system in embodiment one; the rail vehicle brake instruction redundant transmission method in embodiment one is adopted to perform vehicle brake control.

[0068] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application rather than limit them, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or replaced by the equivalent, without departing from the spirit and scope of the present application, any modification or equivalent replacement, which should be covered within the protection scope of the claims of the present application.

Claims

1. A redundant transmission system of braking commands for a rail vehicle, characterized in that, The system comprises: a first central control device and a second central control device arranged in each driver's room; the first central control device and the second central control device are redundant to each other and are connected in communication through a network line; a terminal control device and a braking system arranged in each passenger room, the terminal control device and the braking system are connected through a line, and at the same time, the terminal control device and the braking system are connected in communication through a network line; a driver controller in each driver's room is connected through a line with the first central control device and the second central control device in the driver's room respectively; each driver controller is connected through a line with the braking system in each passenger room; the first central control device and the second central control device in each driver's room are connected in communication with the terminal control device of each passenger room through a network line respectively; the braking instruction of the driver control room can be transmitted to the braking system of each passenger room through different transmission paths at the same time; a priority is arranged between each transmission path, when the braking levels transmitted by each path are the same, the braking system preferentially receives the braking instruction transmitted by the transmission path with the highest priority; when one of the transmission paths is abnormal, the braking system automatically receives the braking instruction transmitted by the transmission path with the highest priority among the remaining transmission paths.

2. A rail vehicle brake command redundancy transmission system as claimed in claim 1, characterized in that The braking instruction of the driver control room can be transmitted to the braking system of each passenger room through different transmission paths at the same time; when the braking levels transmitted by each path are different, the braking system selects the maximum value in the received braking levels to control the braking of the corresponding passenger room.

3. A redundant transmission system of brake commands for a rail vehicle according to claim 1 or 2, characterized in that, The paths for transmitting the braking instruction of the driver control room to the braking system of each passenger room are as follows: the braking instruction sent by the driver controller is transmitted through a line to the first central control device and the second central control device connected thereto; the first central control device and the second central control device respectively transmit the received braking instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received braking instruction to the braking system of the passenger room through a network line to realize the braking control of the passenger room.

4. A redundant transmission system of brake commands for a rolling stock according to claim 1 or 2, characterized in that, The paths for transmitting the braking instruction of the driver control room to the braking system of each passenger room are as follows: the braking instruction sent by the driver controller is transmitted through a line to the first central control device and the second central control device connected thereto; the first central control device and the second central control device respectively transmit the received braking instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received braking instruction to the braking system of the passenger room through a line to realize the braking control of the passenger room.

5. A redundant transmission system of brake commands for a rolling stock according to claim 1 or 2, characterized in that, The paths for transmitting the braking instruction of the driver control room to the braking system of each passenger room are as follows: the braking instruction sent by the driver controller is directly transmitted through a line to the braking system of each passenger room to realize the braking control of the passenger room.

6. A rail vehicle brake command redundancy transmission system as claimed in claim 1, characterized in that, The network line comprises double network cables, and the two network cables are redundant to each other.

7. A method for redundant transmission of a rail vehicle braking command, characterized in that, The rail vehicle braking instruction redundant transmission system according to any one of claims 1-6 comprises: The brake instruction of the control room can be transmitted to the brake system of each passenger room through different transmission paths at the same time, and priority is set between each transmission path. When the brake levels transmitted by each path are the same, the brake system preferentially adopts the brake instruction transmitted by the transmission path with the highest priority. When an abnormality occurs in one of the transmission paths, the brake system automatically adopts the brake instruction transmitted by the transmission path with the highest priority among the remaining transmission paths. When the brake levels transmitted by each path are different, the brake system selects the maximum value among the received brake levels to perform brake control on the corresponding passenger room.

8. A redundant transmission method of a braking command of a rail vehicle according to claim 7, characterized in that, The transmission paths include: Path ①: the brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through a line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through a network line; Path ②: the brake instruction sent by the controller is transmitted to the first central control device and the second central control device connected thereto through a line; the first central control device and the second central control device respectively transmit the received brake instruction to the terminal control device of each passenger room through a network line, and the terminal control device transmits the received brake instruction to the brake system of the passenger room through a line; Path ③: the brake instruction sent by the controller is directly transmitted to the brake system of each passenger room through a line.

9. A rail vehicle, characterized by The rail vehicle brake instruction redundant transmission system according to any one of claims 1-6.

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