Control system and control method for self-adaptive opening of platform door

Abstract

The invention discloses a control system and a control method for self-adaptive opening of a platform door. The control method comprises the following steps: setting an information transmission protocol and a transmission information format between a signal system and a platform door system; establishing connection between the platform door system and the signal system, and sending heartbeat information; in the train running process, when a train is pressed into a platform rail, a signal system sends train information to a platform door system of a corresponding platform, and the platform door system makes a corresponding opening degree according to the train type in the train information so that the opening degree of a platform door can be matched with the opening degree of a train door; the problem that potential safety hazards exist when passengers get on and off the bus due to different bus door positions is solved, user requirements are better met, and the riding experience of the passengers is improved.

Description

Technical Field

[0001] The invention relates to the field of subway platform doors, and in particular to a control system and a control method for adaptively opening platform doors. Background Art

[0002] At present, with the continuous development of subway construction and subway vehicle technology, many lines have multi-phase projects. During the extension process, some lines have slightly different door positions of vehicles in different construction periods. Therefore, when new and old trains are running on the line, since there is only one platform door position and the door opening width set by the system, when trains of different models stop, the door opening positions of some trains and the platform doors may not completely correspond. The main reason for this phenomenon is the information isolation between systems: the signal system is a system with a high degree of security, and all its external interfaces need to have a high degree of security to complete the connection. In existing subway projects, only some key information between the signal system and the platform door is transmitted through the hard-wired interface, such as the signal sending door opening and closing commands to the platform door system, and the platform door system sending door closing and locking information to the signal system, while other information cannot be transmitted and shared between the platform door system and the signal system.

[0003] Although it is possible to set up additional hard wires to send the vehicle model information of the signal system to the platform door system through hard wires, it is necessary to add a lot of hard wires between the signal system and the platform door system. This project requires a large change, which increases the complexity of the circuit and is not conducive to later maintenance. Alternatively, external equipment can be added to identify incoming trains, but due to the complexity of the subway line operating environment and the limitations of current technology, the vehicle model information will be misidentified, resulting in incorrect door opening, affecting passengers getting on and off, and also increasing the corresponding construction cost.

[0004] Therefore, it is necessary to propose a system and method that is efficient, simplifies the circuit and can solve the problem that the train door opening position and the platform door cannot completely correspond. Summary of the invention

[0005] The purpose of the present invention is to provide a control system and a control method for adaptively opening platform doors, which can simplify the circuit and solve the problem that the door opening positions of some trains cannot completely correspond to the platform doors.

[0006] To achieve the above object, the present invention proposes a control method for adaptively opening a platform door, comprising the following steps:

[0007] S1. Set the information transmission protocol and transmission information format between the signal system and the platform door system;

[0008] S2, the platform door system and the signal system establish a connection and send heartbeat information;

[0009] S3. During the train operation, when the train presses into the platform track, the signal system sends the train information to the platform door system of the corresponding platform. The platform door system makes the corresponding opening according to the train model in the train information, so that the opening of the platform door matches the train door opening.

[0010] Preferably, the step S1 specifically includes the following steps:

[0011] S11. Number each station and platform on the line;

[0012] S12, setting up network interfaces on the signal system and the platform door system respectively, and setting up optical cables and firewalls between the two, and dividing dedicated VLANs of network channels on the switches of the signal system;

[0013] S13, setting up TCP / IP protocol between the signal system and the platform door system, and assigning an IP address to the platform door corresponding to each platform;

[0014] S14, set the function code of the signal system and platform door system;

[0015] S15, storing the train information to be sent to the platform door system in the signal system;

[0016] S16, setting the transmission format of the information to be transmitted between the platform door system and the signal system;

[0017] Among them, steps S11 to S16 are performed in no particular order.

[0018] Preferably, in step S12, a firewall is set between the platform door system and the signal system, and by setting a whitelist mechanism of the firewall, setting information between the platform door system and the signal system can pass through the firewall, while other information cannot pass through the firewall.

[0019] Preferably, in step S15, the train information to be sent to the platform door system includes vehicle model information, train number, and marshaling information.

[0020] Preferably, in step S2, the platform door system and the signal system establish a connection through a handshake mechanism.

[0021] Preferably, when the platform door system and the signal system execute the handshake mechanism, if the platform door system or the signal system does not receive a correct response request, a fault alarm is given.

[0022] Preferably, after the platform door system and the signal system are connected, the signal system periodically sends the heartbeat information to the platform door system; if the signal system does not receive a response from the platform door system within the specified time, it is considered that the information transmission has failed, and the system needs to be repaired at this time. Subsequently, the door is opened according to the conventional mechanism when the train enters the station; if the heartbeat information between the signal system and the platform door system is sent and received normally, step S3 is continued.

[0023] Preferably, in the process of the handshake mechanism and the sending and receiving of heartbeat information, the platform door system and the signal system both encrypt the sent information and decrypt the received information.

[0024] Preferably, in step S3, the signal system encrypts the train information and then sends it to the platform door system, and the platform door system decrypts the received train information.

[0025] Preferably, when the train leaves the platform area, the signal system sends a reset message to the platform door system, and the platform door system decrypts the reset message after receiving it, and then the platform door system clears the train information previously received.

[0026] The present invention also proposes a control system for adaptive opening of platform doors, comprising a platform door system and a signal system, wherein the signal system adopts the above-mentioned control method for adaptive opening of platform doors to control the adaptive opening of the platform door system.

[0027] Preferably, the control system for adaptive opening of the platform doors further comprises a firewall disposed between the platform door system and the signal system.

[0028] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0029] This solution proposes a control system and control method for adaptive opening of platform doors, the control method comprising the steps of: setting an information transmission protocol and a transmission information format between a signal system and a platform door system; establishing a connection between the platform door system and the signal system, and sending heartbeat information; during the operation of a train, when a train presses into the platform track, the signal system sends the train information to the platform door system of the corresponding platform, and the platform door system makes a corresponding opening according to the train model in the train information, so that the opening of the platform door matches the opening of the train door; this solution solves the problem of potential safety hazards for passengers getting on and off the train due to different door positions, better covers user needs, and improves the riding experience of passengers;

[0030] The equipment of this solution is simple, and only needs to set up network interfaces and corresponding equipment on both the signal system and the platform door system, and transmit through network protocols without adding complex hard-wire circuits;

[0031] This solution can transmit more information by setting the transmission protocol and data format between the signal system and the platform door system. It adopts the security module network transmission, which is safe and convenient, simple to deploy and easy to implement.

[0032] This solution can improve the automation level of line operations and provide greater flexibility for unmanned driving transformation lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a connection schematic diagram of a control system for adaptively opening platform doors of the present invention;

[0034] Figure 2 It is a flow chart of a control method for adaptively opening a platform door according to the present invention;

[0035] Figure 3 This is a flow chart of a train entering a platform in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the embodiments of the present invention Figure 1 to Figure 3 , the technical solutions, structural features, objectives achieved and effects in the embodiments of the present invention are described in detail.

[0037] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0038] It should be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] The control system and control method of the adaptive opening of platform doors of the present invention propose a simple and efficient transmission method. The signal system safely transmits the vehicle model information of the train to the corresponding platform door system, so that the platform door can adaptively open according to the type of incoming train. The control system and control method reduce the transmission of hard-wired circuit information, simplify the circuit, and solve the problem of mismatch between train doors and platform doors (platform screen doors) after the train stops.

[0040] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] like Figure 1 As shown, the control system for adaptive opening of platform doors in this embodiment includes a platform door system (PSD) and a signal system (SIG), wherein the platform door system and the signal system are connected via a network interface, wherein information can be transmitted between the platform door system and the signal system by dividing a dedicated VLAN (virtual local area network) of a network channel on a switch of the signal system. A firewall is also provided between the platform door system and the signal system, and by setting a corresponding whitelist mechanism, the setting information between the platform door system and the signal system can pass through the firewall, while other information cannot pass through the firewall, thereby ensuring the security of network boundary protection. The setting information includes train information and reset information sent by the signal system to the platform door system; the reset information means that after the train passes through the platform door and leaves, the platform door system clears the previously received train information, so that it can receive the next train information to continue adaptive door opening.

[0042] The control method for adaptively opening the platform door of this embodiment is as follows: Figure 2 As shown, the following steps are included:

[0043] S1. Set the information transmission protocol and information transmission format between the signal system and the platform door system;

[0044] S2, the platform door system and the signal system establish a connection, and send heartbeat information between the platform door system and the signal system;

[0045] S3, such as Figure 3 As shown, during the operation of the train, when the front of the train presses into the platform area, that is, when the train presses into the platform track, the signal system sends the train information to the platform door system of the corresponding platform. The platform door system makes the corresponding opening according to the train model in the train information, so that the opening of the platform door matches the opening of the train door.

[0046] Wherein, step S1 specifically includes the following steps:

[0047] S11. Number each station and platform on the line;

[0048] There may be multiple stations on a line. Each station usually includes two platforms, one for the up and one for the down. Each station and platform is numbered and stored in the signal system and platform door system, so as to ensure that when the subsequent signal system sends train information, the train information can be sent to the platform door system of the correct platform.

[0049] S12. At each station, network interfaces are respectively set up on the signal system and the platform door system, and optical cables and firewalls are set up between the two. In addition, dedicated VLANs for dividing network channels are set up on the switches of the signal system.

[0050] The signal system network is an independent and closed backbone network structure. Switch network nodes are configured on the signal system of each station along the entire line. By dividing the dedicated VLAN of the network channel on the switch of the signal system of each station and combining it with optical cables, the signal system can send information to the corresponding platform in the platform door system.

[0051] When the signal system and the platform door system transmit information, there is a direct network interface between the two. Considering that the subway signal system is a secure and independent network system, in order to meet the information security level protection requirements of the subway system, the network needs to be isolated and boundary protected. Therefore, a firewall is added between the platform door system and the signal system, and by setting up a whitelist mechanism of the firewall, the setting information between the platform door system and the signal system can pass through the firewall, while other information cannot pass through the firewall, thereby ensuring the information security between the network interfaces.

[0052] Among them, it is also necessary to configure optical-electrical conversion equipment to convert the information transmitted by the optical cable;

[0053] S13, setting up a TCP / IP protocol between the signal system and the platform door system, and assigning an IP address to the platform door corresponding to each platform;

[0054] Define the signal system as the sender (client) and the platform door system as the receiver (server). When the platform door system receives the information sent by the signal system, it can parse the information according to the interface protocol defined by both parties. This setting helps to ensure the accuracy of information transmission between the two parties.

[0055] Assign an IP address to the platform door system corresponding to each platform, so as to ensure the uniqueness of the information received by each station;

[0056] S14, set the function code of the signal system and platform door system;

[0057] The ATS and the platform door system are set up so that they can obtain the function code of the holding register data of the previous peer device, so as to read the starting address and the number of registers of the holding register of the previous peer device;

[0058] S15, storing the train information to be sent to the platform door system in the signal system;

[0059] The train information that needs to be sent to the platform door system may include vehicle type information, train number, marshaling information, etc. The train information is stored in a register of the signal system. The signal system has multiple registers, each with different functions, storing train information of different vehicle types. The following table is an example of register storage information.

[0060] register Function High byte (15-8) Low byte (7-0) 0 Platform door status 0 0-3 means platform data is valid 1 Train number for model 1 0 Train CCID number 2 Train number for model 2 0 Train CCID number 3 Train number for model 3 0 Train CCID number

[0061] Later, when a train of the corresponding model enters the platform, the signal system sends the corresponding train information to the platform door system.

[0062] S16, setting the transmission format of the information to be transmitted between the platform door system and the signal system;

[0063] The format of the transmission information is determined according to the quantity and content of the transmission information between the platform door system and the signal system; wherein the signal system can send vehicle model information, vehicle number information, marshaling information and response information between the ATS system and the platform door system to the platform door system according to the operation diagram, and the data length of the transmission information is determined according to the quantity and content of these information; subsequently, when the platform door system receives the above information sent by the signal system, it determines the door opening strategy according to the received vehicle model, vehicle number and marshaling information.

[0064] It should be noted that the sequence of the above steps S11 to S16 does not affect the execution of this solution, so there is no limitation on it.

[0065] In step S2, the platform door system and the signal system establish a connection through a handshake mechanism; when the platform door system and the signal system execute the handshake mechanism, if the platform door system or the signal system does not receive a correct response request, a fault alarm is given.

[0066] In step S2, after the platform door system and the signal system establish a connection, the signal system periodically sends the heartbeat information to the platform door system. If the signal system does not receive a response from the platform door system within the specified time, it is considered that the information transmission has failed. At this time, the system needs to be repaired. Subsequently, when the train enters the station, the door is opened according to the conventional mechanism. If the heartbeat information between the signal system and the platform door system is sent and received normally, continue to step S3.

[0067] Step S2, during the handshake mechanism and the process of sending and receiving the heartbeat information, the platform door system and the signal system both encrypt the sent information and decrypt the received information to improve the security of information transmission.

[0068] In step S3, during the operation of the train, the on-board controller reads the positioning information of the trackside beacon and the pitch of the encoded odometer, thereby calculating the position of the train on the line in real time, and sending the real-time calculated positioning information to the ATS system; the ATS system divides the line into different small sections, and based on the positioning information sent by the on-board controller, the ATS system determines the small section where the train is actually located. When the ATS determines that the train has reached the small section at the platform, it means that the train has entered the platform track. At this time, the ATS system sends the information that the train has arrived at the platform track to the signal system.

[0069] The signal system encrypts the train information and sends it to the platform door system of the corresponding platform. The platform door system decrypts the received information, obtains the vehicle model information, marshaling information, etc. in the train information, and formulates the corresponding door opening strategy.

[0070] Furthermore, after step S3, when the train leaves the platform area, that is, when the rear end of the train leaves the platform track, the signal system sends an encrypted reset message to the platform door system. After receiving the encrypted reset message, the platform door system decrypts it, and then the platform door system clears the train information it has previously received.

[0071] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A control method for adaptively opening platform doors, characterized in that: The following steps are involved: S1. Set the information transmission protocol and transmission information format between the signal system and the platform door system; S2, the platform door system and the signal system establish a connection and send heartbeat information; S3. During the train operation, when the train presses into the platform track, the signal system sends the train information to the platform door system of the corresponding platform. The platform door system makes the corresponding opening according to the train model in the train information, so that the opening of the platform door matches the train door opening.

2. The method for controlling the adaptive opening of platform doors as claimed in claim 1, characterized in that: Step S1 specifically includes the following steps: S11. Number each station and platform on the line; S12, setting up network interfaces on the signal system and the platform door system respectively, and setting up optical cables and firewalls between the two, and dividing dedicated VLANs of network channels on the switches of the signal system; S13, setting up TCP / IP protocol between the signal system and the platform door system, and assigning an IP address to the platform door corresponding to each platform; S14, set the function code of the signal system and platform door system; S15, storing the train information to be sent to the platform door system in the signal system; S16, setting the transmission format of the information to be transmitted between the platform door system and the signal system; Among them, steps S11 to S16 are performed in no particular order.

3. The method for controlling the adaptive opening of platform doors as claimed in claim 2, characterized in that: In step S12, a firewall is set between the platform door system and the signal system, and by setting a whitelist mechanism of the firewall, the setting information between the platform door system and the signal system can pass through the firewall, while other information cannot pass through the firewall.

4. The method for controlling the adaptive opening of platform doors as claimed in claim 2, characterized in that: In step S15, the train information that needs to be sent to the platform door system includes vehicle model information.

5. The method for controlling the adaptive opening of platform doors as claimed in claim 1, characterized in that: In step S2, the platform door system and the signal system establish a connection through a handshake mechanism.

6. The method for controlling the adaptive opening of platform doors as claimed in claim 5, characterized in that: When the platform door system and the signal system execute the handshake mechanism, if the platform door system or the signal system does not receive a correct response request, a fault alarm is given.

7. The method for controlling the adaptive opening of platform doors as claimed in claim 5, characterized in that: After the platform door system and the signal system are connected, the signal system periodically sends the heartbeat information to the platform door system; if the signal system does not receive a response from the platform door system within the specified time, it is considered that the information transmission has failed. At this time, the system needs to be repaired and the door is opened according to the conventional mechanism when the train enters the station; if the heartbeat information between the signal system and the platform door system is sent and received normally, step S3 is continued.

8. The method for controlling the adaptive opening of platform doors as claimed in claim 6, characterized in that: In the process of the handshake mechanism and the sending and receiving of the heartbeat information, the platform door system and the signal system both encrypt the sent information and decrypt the received information.

9. The method for controlling the adaptive opening of platform doors as claimed in claim 1, characterized in that: Step S3 In the process, the signal system encrypts the train information and then sends it to the platform door system, and the platform door system decrypts the received train information.

10. The method for controlling the adaptive opening of platform doors as claimed in claim 1, characterized in that: When the train leaves the platform area, the signal system sends a reset message to the platform door system. After receiving the reset message, the platform door system decrypts it, and then the platform door system clears the train information previously received.

11. A control system for adaptive opening of platform doors, characterized in that: It comprises a platform door system and a signal system, wherein the signal system adopts the platform door adaptive door opening control method as described in any one of claims 1 to 10 to control the adaptive door opening of the platform door system.

12. The platform door adaptive door opening control system according to claim 11, characterized in that: Also included is a firewall disposed between the platform door system and the signal system.

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