Hard wire redundancy instruction control system and method for unmanned urban rail train

Abstract

The invention provides a hard wire redundancy instruction control system and method for an unmanned urban rail train. The system comprises a train network control system, a remote input and output module, a digital quantity acquisition board card and a central control unit. The digital quantity acquisition board card is used for collecting instruction signals of a head train and a tail train, and the instruction signals comprise a train direction, a traction instruction, a braking instruction and a rapid braking instruction; the remote input and output module is used for collecting the command signal collected by the digital quantity collection board card through a hard wire and transmitting the command signal to a train network control system; the train network control system is used for receiving the signals collected by the remote input and output module, integrating the signals and then sending the signals to the central control unit; and the central control unit is used for receiving a signal of the train network control system and carrying out logic calculation and judgment. According to the invention, the availability and reliability of the system are improved by establishing a method for coupling the network signals of the acquisition equipment and the gateway equipment with the electrical signals transmitted by the hard wires.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent transportation systems, and in particular to a hard-wired redundant command control system and method for an unmanned urban rail train. Background Art

[0002] Unmanned vehicles generally have two RIOM chassis installed at the head and tail cars respectively, and four chassis installed for the entire train. For key train control signals such as train direction, traction command, braking command, and rapid braking command, redundant signal collection is achieved through a single-end dual-board design. However, unlike high-level signals, braking commands and rapid braking commands use a low-level signal effective design method to ensure driving safety. During the operation of the vehicle, the traction command and the braking command are generally at the same high level. When the board fails or the chassis loses power, the signal of the braking command changes from a high level to a low level. In addition, when the vehicle receives a traction command and a braking command at the same time, the vehicle gives priority to the braking command, so if the above situation occurs, the vehicle will apply the brakes.

[0003] Since this type of design has four acquisition channels for the same signal, when the CCU processes the signal, it will use an algorithm to determine the validity of the instruction. If there is a signal inconsistency, a fault will be reported on the driver's cab display screen, and the driver can then handle the fault according to the guidance suggestions. However, there is no vehicle operator in the unmanned train, so if the vehicle is completely guided to safety when a fault occurs, the vehicle will stop immediately, which will reduce the availability of the vehicle to a certain extent, causing the overall vehicle operation line to be disturbed, and having a greater impact on operations during peak hours.

[0004] The existing technology uses quantity judgment for the braking command and rapid braking command collected by four-way signals, and considers that the signal is credible when it is greater than or equal to two, and the vehicle will apply the braking command and rapid braking command. Therefore, when any two braking command input boards of the whole vehicle fail, the vehicle will brake immediately and stop in the platform section, and can only continue to run after manual operation and processing, which affects the operation efficiency and easily causes panic among passengers.

[0005] In addition, the braking command and rapid braking command collected by the four-way signal are taken by single-end OR logic, and then the results at the head and tail ends of the train are taken by AND logic respectively. It can be understood that when the head and tail cars have one signal collected to the braking command and rapid braking command, the whole car will apply the braking and rapid braking commands. When the two braking command input boards of the head car or the tail car fail at the same time, the train will apply the braking command, but when one board fails at each end, the logic will think that the vehicle is in a normal state. At this time, the vehicle will brake only when any board fails. This method will reduce the safety of the vehicle when the board or chassis loses power.

[0006] Therefore, a control method is needed that can simultaneously determine the validity of the board and the accuracy of the braking command. Summary of the invention

[0007] According to the technical problems raised above, a hard-wired redundant command control system and method for unmanned urban rail trains are provided. The present invention solves the problem that the vehicle cannot continue to operate when the RIOM chassis loses power or the board fails during the operation of the vehicle, and reduces the risk that the vehicle emergency brake stops in the section and cannot be handled in time by humans, thereby improving the safety and availability of unmanned trains.

[0008] The technical means adopted by the present invention are as follows:

[0009] A hard-wired redundant command control system for an unmanned urban rail train comprises: a train network control system, a remote input and output module, a digital quantity acquisition board and a central control unit, wherein:

[0010] The digital quantity acquisition board is used to collect the command signals of the head and tail trains, and the command signals include: train direction, traction command, braking command and rapid braking command;

[0011] The remote input and output module is used to collect the command signal collected by the digital quantity acquisition board through hard wires and transmit the command signal to the train network control system;

[0012] The train network control system is used to receive signals collected by the remote input and output modules and send the signals to the central control unit after integration;

[0013] The central control unit is used to receive signals from the train network control system, perform logical calculations and judgments, and send the judgment results and output instructions to the train network control system.

[0014] Furthermore, the train network control system is responsible for the overall control of the entire vehicle. When receiving a braking command or a rapid braking command, the train network control system transmits a braking signal to the traction system and the braking system to perform a deceleration braking operation.

[0015] Furthermore, the command signal includes a low-level output signal and a high-level output signal. When the digital quantity acquisition board fails, the high-level output signal is automatically converted into a low-level output signal, and the output braking command and rapid braking command are invalid.

[0016] The present invention also includes a hard-wired redundant instruction control method for an unmanned urban rail train, the specific steps of which include:

[0017] After the command signals collected by the four digital quantity acquisition boards on the train are transmitted to the central control unit, the central control unit calculates the number of online digital quantity acquisition boards and the effective number of braking commands and rapid braking commands;

[0018] Determine the train's braking instructions and rapid braking instructions;

[0019] The central control unit outputs instructions to the train network control system based on the judgment results, and the train network control system performs overall control.

[0020] Furthermore, the online quantity calculation method of the digital quantity acquisition board is:

[0021] When the central control unit can normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is online, and the number of digital quantity acquisition boards online in the logical judgment is increased by 1; when the central control unit cannot normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is in an offline state, and the number of digital quantity acquisition boards online in the logical judgment is not accumulated.

[0022] Furthermore, the effective number of the braking instructions and the rapid braking instructions is calculated as follows:

[0023] When the digital quantity acquisition board is in offline state, the corresponding braking command and rapid braking command are invalid, and the effective number of braking command and rapid braking command is not accumulated;

[0024] When the digital quantity acquisition board is in the online state, if the corresponding braking command and rapid braking command are valid, the effective number of braking command and rapid braking command is accumulated by 1; if the corresponding braking command and rapid braking command are invalid, the braking command and rapid braking command are not accumulated.

[0025] Furthermore, the method for determining the braking instruction and the rapid braking instruction of the train is:

[0026] If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking instructions and rapid braking instructions is ≥2, it is determined that the braking instruction and rapid braking instruction need to be executed;

[0027] If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking commands and rapid braking commands is <2, it is determined that the braking command and rapid braking command do not need to be executed;

[0028] If the number of online digital quantity acquisition boards is less than 3, and the number of effective braking instructions and rapid braking instructions is greater than or equal to 1, it is determined that the braking instruction and rapid braking instruction need to be executed;

[0029] If the number of online digital quantity acquisition boards is less than 3, and the effective number of braking instructions and rapid braking instructions is less than 1, it is determined that the braking instruction and rapid braking instruction do not need to be executed.

[0030] Furthermore, when the judgment result is to perform a braking operation, the central control unit converts the braking signal into an electrical signal and transmits it to the train network control system, and the train network control system transmits the braking signal to the traction system and the braking system to perform a deceleration braking operation; when the judgment result is no instruction, normal operation is maintained.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] The hard-wire redundant command control system and method of the unmanned urban rail train provided by the present invention solves the problem that when multiple digital quantity acquisition boards of the RIOM chassis of the TCMS system fail, the unmanned vehicle stops in the section and cannot be immediately handled by the maintenance personnel. In this way, the train can be safely operated to the platform, which is convenient for the driver and crew to detect and handle the vehicle;

[0033] The hard-wire redundant command control system and method for unmanned urban rail trains provided by the present invention optimize the problem that the whole vehicle cannot accurately identify vehicle commands when the acquisition board fails for low-level hard-wire redundant signals, can greatly improve the availability of the train, and avoid the problem of train delays on the entire line due to vehicle failures.

[0034] Based on the above reasons, the present invention can be widely promoted in the field of intelligent transportation systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 The flowchart is a hard-wired redundant instruction control method of the unmanned urban rail train in the present invention.

[0037] Figure 2 This is an electrical schematic diagram of a hard-wired redundant command control system for an unmanned urban rail train in the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] like Figure 1 As shown, the present invention provides a hard-wired redundant command control system for an unmanned urban rail train, characterized in that it includes: a train network control system, a remote input and output module, a digital quantity acquisition board and a central control unit, wherein:

[0041] The digital quantity acquisition board is used to collect the command signals of the head and tail trains, and the command signals include: train direction, traction command, braking command and rapid braking command;

[0042] The remote input and output module is used to collect the command signal collected by the digital quantity acquisition board through hard wires and transmit the command signal to the train network control system;

[0043] The train network control system is used to receive signals collected by the remote input and output modules and send the signals to the central control unit after integration;

[0044] The central control unit is used to receive signals from the train network control system, perform logical calculations and judgments, and send the judgment results and output instructions to the train network control system.

[0045] In order to improve the reliability and availability of unmanned vehicles, the present invention is planned and designed by combining electrical hard wiring with logic algorithms. Different from manned vehicles, the key signals for controlling the vehicle are designed with independent chassis and independent boards, so that the key signals are transmitted and collected through independent channels, improving the reliability of the input of the source end signal.

[0046] In specific implementation, as a preferred embodiment of the present invention, the train network control system is responsible for the overall control of the entire vehicle. When receiving a braking command or a rapid braking command, the train network control system transmits the braking signal to the traction system and the braking system to perform a deceleration braking operation.

[0047] In specific implementation, as a preferred embodiment of the present invention, the command signal includes a low-level output signal and a high-level output signal. When the digital quantity acquisition board fails, the high-level output signal is automatically converted into a low-level output signal, and the output braking command and rapid braking command are invalid.

[0048] The present invention also includes a hard-wired redundant instruction control method for an unmanned urban rail train, the specific steps of which include:

[0049] After the command signals collected by the four digital quantity acquisition boards on the train are transmitted to the central control unit, the central control unit calculates the number of online digital quantity acquisition boards and the effective number of braking commands and rapid braking commands;

[0050] Determine the train's braking instructions and rapid braking instructions;

[0051] The central control unit outputs instructions to the train network control system based on the judgment results, and the train network control system performs overall control.

[0052] In specific implementation, as a preferred embodiment of the present invention, the online quantity calculation method of the digital quantity acquisition board is:

[0053] When the central control unit can normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is online, and the number of digital quantity acquisition boards online in the logical judgment is increased by 1; when the central control unit cannot normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is in an offline state, and the number of digital quantity acquisition boards online in the logical judgment is not accumulated.

[0054] In specific implementation, as a preferred embodiment of the present invention, the effective number calculation method of the braking command and the rapid braking command is as follows:

[0055] When the digital quantity acquisition board is in offline state, the corresponding braking command and rapid braking command are invalid, and the effective number of braking command and rapid braking command is not accumulated;

[0056] When the digital quantity acquisition board is in the online state, if the corresponding braking command and rapid braking command are valid, the effective number of braking command and rapid braking command is accumulated by 1; if the corresponding braking command and rapid braking command are invalid, the braking command and rapid braking command are not accumulated.

[0057] In specific implementation, as a preferred embodiment of the present invention, the method for determining the braking instruction and the rapid braking instruction of the train is:

[0058] If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking instructions and rapid braking instructions is ≥2, it is determined that the braking instruction and rapid braking instruction need to be executed;

[0059] If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking commands and rapid braking commands is <2, it is determined that the braking command and rapid braking command do not need to be executed;

[0060] If the number of online digital quantity acquisition boards is less than 3, and the number of effective braking instructions and rapid braking instructions is greater than or equal to 1, it is determined that the braking instruction and rapid braking instruction need to be executed;

[0061] If the number of online digital quantity acquisition boards is less than 3, and the effective number of braking instructions and rapid braking instructions is less than 1, it is determined that the braking instruction and rapid braking instruction do not need to be executed.

[0062] In specific implementation, as a preferred embodiment of the present invention, when the judgment result is to perform a braking operation, the central control unit converts the braking signal into an electrical signal and transmits it to the train network control system, and the train network control system transmits the braking signal to the traction system and the braking system to perform a deceleration braking operation; when the judgment result is that there is no instruction, normal operation is maintained.

[0063] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0064] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0066] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0067] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0068] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hard-wired redundant command control system for an unmanned urban rail train, characterized in that: include: Train network control system, remote input and output module, digital quantity acquisition board and central control unit, including: The digital quantity acquisition board is used to collect the command signals of the head and tail trains, and the command signals include: train direction, traction command, braking command and rapid braking command; The remote input and output module is used to collect the command signal collected by the digital quantity acquisition board through hard wires and transmit the command signal to the train network control system; The train network control system is used to receive signals collected by the remote input and output modules and send the signals to the central control unit after integration; The central control unit is used to receive signals from the train network control system, perform logical calculations and judgments, and send the judgment results and output instructions to the train network control system.

2. The hard-wired redundant command control system of the unmanned urban rail train according to claim 1 is characterized in that: The train network control system is responsible for the overall control of the entire vehicle. When receiving a braking command or a rapid braking command, the train network control system transmits a braking signal to the traction system and the braking system to perform a deceleration braking operation.

3. The hard-wired redundant command control system of the unmanned urban rail train according to claim 1, characterized in that: The command signal includes a low-level output signal and a high-level output signal. When the digital quantity acquisition board fails, the high-level output signal is automatically converted into a low-level output signal, and the output braking command and rapid braking command are invalid.

4. A hard-wire redundant instruction control method for an unmanned urban rail train according to any of claims 1 to 3, characterized in that: The specific steps include: After the command signals collected by the four digital quantity acquisition boards on the train are transmitted to the central control unit, the central control unit calculates the number of online digital quantity acquisition boards and the effective number of braking commands and rapid braking commands; Determine the train's braking instructions and rapid braking instructions; The central control unit outputs instructions to the train network control system based on the judgment results, and the train network control system performs overall control.

5. The hard-wire redundant instruction control method for an unmanned urban rail train according to claim 4, characterized in that: The online quantity calculation method of the digital quantity acquisition board is as follows: When the central control unit can normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is online, and the number of digital quantity acquisition boards online in the logical judgment is increased by 1; when the central control unit cannot normally receive the signal of the digital quantity acquisition board, it indicates that the current digital quantity acquisition board is in an offline state, and the number of digital quantity acquisition boards online in the logical judgment is not accumulated.

6. The hard-wire redundant instruction control method for an unmanned urban rail train according to claim 4, characterized in that: The effective number calculation method of the braking command and the rapid braking command is as follows: When the digital quantity acquisition board is in offline state, the corresponding braking command and rapid braking command are invalid, and the effective number of braking command and rapid braking command is not accumulated; When the digital quantity acquisition board is in the online state, if the corresponding braking command and rapid braking command are valid, the effective number of braking command and rapid braking command is accumulated by 1; if the corresponding braking command and rapid braking command are invalid, the braking command and rapid braking command are not accumulated.

7. The hard-wire redundant instruction control method for an unmanned urban rail train according to claim 4, characterized in that: The method for determining the braking command and the rapid braking command of the train is: If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking instructions and rapid braking instructions is ≥2, it is determined that the braking instruction and rapid braking instruction need to be executed; If the number of online digital quantity acquisition boards is ≥3, and the number of effective braking commands and rapid braking commands is <2, it is determined that the braking command and rapid braking command do not need to be executed; If the number of online digital quantity acquisition boards is less than 3, and the number of effective braking instructions and rapid braking instructions is greater than or equal to 1, it is determined that the braking instruction and rapid braking instruction need to be executed; If the number of online digital quantity acquisition boards is less than 3, and the effective number of braking instructions and rapid braking instructions is less than 1, it is determined that the braking instruction and rapid braking instruction do not need to be executed.

8. The hard-wire redundant instruction control method for an unmanned urban rail train according to claim 4, characterized in that: When the judgment result is that the braking operation is to be performed, the central control unit converts the braking signal into an electrical signal and transmits it to the train network control system, and the train network control system transmits the braking signal to the traction system and the braking system to perform a deceleration braking operation; when the judgment result is that there is no instruction, normal operation is maintained.

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