Platform door system adopting PEDC hot standby redundancy design

Abstract

The invention relates to the field of rail transit, and particularly discloses a platform door system adopting PEDC hot standby redundancy design, a platform on each side of the system adopts at least two sets of complete and independent PEDCs, and a platform door on the same side is subjected to redundancy control by a master PEDC board and a slave PEDC board. And a safety relay group and a communication module are integrated on the PEDC board and are used for realizing door opening and closing actions and communication exchange of each interface. According to the control system in the platform door PSC cabinet, master-slave redundancy switching information is adopted by the platform on each side of the control system, and a hard line design is adopted, so that the overall safety of the platform door system is improved. The defects that when a PEDC board card breaks down in the normal operation period, a train is delayed, and a platform door cannot be linked are overcome, the problem that the PEDC board card cannot be replaced is solved, the maintainability of the platform door system is improved, and through support of alignment isolation, the situation that the platform door cannot be linked due to the fact that a train door or the platform door breaks down can be avoided. Operators operate platform doors, and consequently people stream chaos and train delay are caused.

Description

Technical Field

[0001] The present invention relates to the field of rail transit, and in particular to a platform door system adopting a PEDC hot standby redundancy design. Background Art

[0002] Fully automatic unmanned driving is a trend in the modernization of rail transit. Almost all new projects require unmanned driving. Unmanned driving places high demands on the safety, reliability and maintainability of the involved professions and equipment. Unmanned driving involves the opening and closing of platform doors. PEDC is the core control unit in the platform door system. Technical solutions of existing technologies:

[0003] Each platform is controlled by a single PEDC unit. PEDC includes power supply, logic analysis control, fault diagnosis, communication processing, relay logic control, interface, and display output.

[0004] The power supply part is responsible for supplying power to each functional module;

[0005] Logical analysis control performs logical analysis on the input and output of each module and the input status of each DCU (door control unit);

[0006] Fault diagnosis is to identify the power input, control input, communication status of the entire system and various states of each DCU (door control unit);

[0007] The communication part transmits the status, alarm information and other data of DCU to PEDC. PEDC sorts out the bit status information of other modules and then sends it to the upper computer MMS (monitoring management system) and comprehensive monitoring.

[0008] Relay logic control is to output the input signals such as IBP (emergency brake pedal), PLS (passenger detection logic system), SIG (signal system), door opening and closing signals, enabling operation, etc. to each DCU through relay logic control to control the door opening and closing control of DCU;

[0009] The interface part is the interface between PEDC and external signal input and output, such as IBP, PSL, SIG, etc.

[0010] The display part indicates the main working status of the platform door system through the indicator lights on the PSC (control cabinet) panel.

[0011] Since the traditional method is to use a single PEDC unit for control, once the PEDC fails, it will affect the operation of the system, and the PEDC cannot be replaced in a short time. For unmanned driving systems with increasingly stringent operating environment requirements, traditional PEDCs cannot meet them at all. Therefore, technical personnel in this field provide a platform door system using a PEDC hot standby redundant design to solve the problems raised in the above background technology. Summary of the invention

[0012] In order to solve the above technical problems, the present invention provides a platform door system adopting PEDC hot standby redundant design, wherein each side of the platform of the system adopts at least two complete and independent PEDCs, and the platform door on the same side is controlled by a master and a slave PEDC board at the same time. The safety relay group integrated on the PEDC board is used to realize the opening and closing door actions of each interface, and the hard-wired input and output interfaces of the master and slave PEDC adopt switching and parallel types.

[0013] Preferably, the hard-wired lines and communication lines of the master and slave PEDCs and the entire DCU are connected in parallel, and the lines are designed to be redundant.

[0014] Preferably, the master and slave PEDCs perform information exchange and logic switching control via a hard-wire interface.

[0015] Preferably, each PEDC in the PSC cabinet is connected to the monitoring host using an independent interface to ensure that the status information of all devices in the system can be uploaded to the monitoring host.

[0016] Preferably, the platform door system is connected to the SIG subsystem by a hard-wire connection, so as to receive door opening and closing commands sent from the signal system.

[0017] Preferably, the platform door system is connected to the ISCS system by connecting the monitoring host inside the PSC cabinet to the ISCS system for transmitting the operating status, real-time data and fault information of the equipment in the platform door system.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention adopts a master-slave redundant hardware overall structure redundant design for each platform on the platform of the platform door PSC cabinet control system, thereby improving the overall safety of the platform door system.

[0020] 2. The present invention overcomes the disadvantages of train delays and failure of platform doors to work together when a PEDC board fails during normal operation, and overcomes the problem that a PEDC board cannot be replaced when a PEDC board fails during normal operation, thereby improving the maintainability of the platform door system.

[0021] 3. The present invention supports unmanned driving scenarios, greatly reduces the number of operating personnel, and reduces the operating costs of rail transit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the PEDC hot standby provided by this application;

[0023] Figure 2 It is a schematic diagram of the connection structure of PEDC and I BP provided in this application;

[0024] Figure 3 It is a schematic diagram of the hard-wire connection structure of PEDC and PSL provided in this application;

[0025] Figure 4 It is a schematic diagram of the communication line connection structure between PEDC and SIG provided by this application;

[0026] Figure 5 It is a schematic diagram of the communication connection structure between PEDC and DCU provided in this application;

[0027] Figure 6 It is a schematic diagram of the connection structure between the master-slave PEDC and the power supply provided by this application;

[0028] Figure 7 It is a schematic diagram of the connection structure of the master-slave PEDC information interaction provided by this application; DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0030] See also Figures 1 to 7 In this embodiment, a platform door system adopting PEDC hot standby redundancy design is provided, including:

[0031] 1) Hardware construction

[0032] a) Overall hardware architecture

[0033] The system uses two complete and independent PEDCs on each platform, and the platform doors on the same side are controlled by the master and slave PEDC boards at the same time. The safety relay group integrated on the board is used to realize the opening and closing of each interface. The hard-wired input and output interfaces of the master and slave PEDCs adopt the switching and parallel type ( Figure 2-5 );

[0034] b) Connection between PEDC and DCU

[0035] The hard-wired lines and communication lines of the master and slave PEDC and the entire DCU are connected in parallel, and the lines are designed to be redundant ( Figure 5 );

[0036] c) Connection between master and slave PEDC

[0037] The master and slave PEDCs are connected through a hard-wired interface for information transmission. The master and slave PEDCs transmit information and receive judgments in real time, so that the master and slave PEDCs can perform logical analysis and switch control based on the information received from each other and their own information. Figure 7 );

[0038] d) Connection between PEDC and MMS monitoring host

[0039] Each PEDC in the PSC cabinet uses an independent interface to connect to the monitoring host to ensure that the status information of all devices in the system can be uploaded to the monitoring host ( Figure 1 );

[0040] 2) External interface

[0041] a) Connection with the signal system SIG subsystem

[0042] The platform door system is connected to the SIG subsystem using a hardwire connection to receive the door opening and closing commands sent from the signal system ( Figure 4 );

[0043] b) Connection with ISCS system

[0044] The connection between the platform door system and the ISCS system is connected by the monitoring host inside the PSC cabinet and the ISCS system to transmit the equipment operating status, real-time data, and fault information in the platform door system ( Figure 1 ).

[0045] 3) Redundant processing method in case of failure

[0046] When the main PEDC on one platform has input anomalies, power failure, or communication failure, the main PEDC will stop output and trigger a PEDC board-level failure. From PEDC monitoring to the immediate operation when the main PEDC fails, there is complete hardware redundancy. Even if a board failure occurs during the door opening and closing process, it will not affect the linkage between the platform door and the train door.

[0047] 4) Door opening and closing action

[0048] The platform door system is connected to the interfaces of CI, I BP, and PSL through hard wires. When the platform door system receives the door opening and closing commands from the system-level (SI G, I BP, PSL) interfaces, the relay groups on the master and slave PEDC boards on the same side act according to the logical analysis of their own states and the master-slave relationship, and send the door opening and closing commands to the entire side DCU connected by hard wire through switching relay contacts to control the door opening and closing actions of the entire side platform doors.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A platform door system adopting PEDC hot standby redundancy design, characterized in that: The system uses at least two complete and independent PEDCs on each platform, and the platform doors on the same side are controlled simultaneously by the master and slave PEDC boards. The safety relay group integrated on the PEDC board is used to realize the opening and closing door actions of each interface. The hard-wired input and output interfaces of the master and slave PEDCs adopt switching and parallel types.

2. A platform door system using PEDC hot standby redundancy design according to claim 1, characterized in that: The hard-wired lines and communication lines of the master and slave PEDC and the entire DCU are all connected in parallel, and the lines are designed to be redundant.

3. The platform door system using PEDC hot standby redundancy design according to claim 1 is characterized in that: The master and slave PEDCs are connected via hardwires to transmit various status and alarm information to each other.

4. The platform door system using PEDC hot standby redundancy design according to claim 1 is characterized in that: Each PEDC in the PSC cabinet uses an independent communication interface to connect and communicate with the monitoring host to ensure that the status information of all devices in the system can be uploaded to the monitoring host for monitoring and recording.

5. The platform door system using PEDC hot standby redundancy design according to claim 1 is characterized in that: The platform door system is connected to the SIG subsystem using a hard-wire connection to receive operation enable and door opening and closing commands sent from the signal system.

6. The platform door system using PEDC hot standby redundancy design according to claim 1, characterized in that: The platform door system is connected to the ISCS system by the monitoring host inside the PSC cabinet being connected to the ISCS system for transmitting the operating status, real-time data and fault information of the equipment in the platform door system.

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