Rail transit door centralized system and control method

Abstract

The invention discloses a rail transit door centralized system and a control method, and belongs to the technical field of rail transit automatic door control, the rail transit door centralized system comprises a domain controller, a door controller and an intelligent IO, the software architecture of the domain controller, the door controller and the intelligent IO comprises an application layer, a safety platform layer and a basic software layer, the security platform layer of the door controller and the security platform layer of the intelligent IO are both in communication connection with the security platform layer of the domain controller; the domain controller, the door controller and the intelligent IO respectively acquire state data of connected external equipment through own software hierarchical structures, and the door controller and the intelligent IO upload the acquired state data to the domain controller; the application layer of the domain controller carries out operation and judgment on the received state data, generates a corresponding control command, and respectively issues the control command to the gate controller, the intelligent IO and the external equipment of the domain controller for execution; according to the invention, centralized management and unified scheduling of control logic of the platform door system are realized, the integration level and expansibility of the system are improved, and the safety and maintenance convenience of the system are enhanced.

Description

Technical Field

[0001] This invention relates to a centralized system and control method for rail transit doors, belonging to the field of rail transit automatic door control technology. Background Technology

[0002] With the rapid development of urban rail transit, platform screen door systems have become an important component for ensuring passenger safety, improving operational efficiency, and achieving automated operation. Platform screen door systems typically need to be linked with signaling systems, vehicle systems, integrated monitoring systems, and on-site control equipment to achieve functions such as door opening and closing control, status monitoring, fault detection, and emergency handling.

[0003] Existing technologies typically employ a distributed control architecture, where an independent controller is set up at each or several gate units to achieve local status acquisition, logic judgment, and execution control. While distributed control architectures offered some flexibility in early applications, their shortcomings have become increasingly apparent as system scale and functional complexity have increased. These shortcomings are generally manifested in the following ways: each gate control unit usually possesses independent control logic, resulting in limited cross-gate collaborative control capabilities. When multi-gate linkage, coordination with signal systems, or unified scheduling of the entire station are involved, complex communication interactions are required to achieve status synchronization, increasing implementation difficulty and communication burden. Furthermore, due to the dispersed logic of each control node, modifications to system functions often require adjustments to multiple control units separately, leading to significant maintenance difficulties.

[0004] In addition, the acquisition, control and communication functions in existing distributed systems usually do not involve standardized layered design, the software and hardware drivers are strongly coupled, and the software structure of different control nodes varies greatly, making system expansion difficult.

[0005] In terms of communication, multiple control nodes are usually connected through multiple signal lines or ordinary Ethernet, resulting in a variety of interface types, complex wiring, and scattered communication resources, making it difficult to achieve unified scheduling and integrated management, and increasing construction and maintenance costs.

[0006] Furthermore, gate drive control, peripheral data acquisition, and network communication functions are often implemented within the same control node, resulting in unclear functional boundaries and hindering modular deployment and hierarchical expansion of the system. Summary of the Invention

[0007] This invention provides a centralized system and control method for rail transit doors, which solves the problems of centralized management difficulties, low communication integration, and poor scalability and maintainability of the existing distributed architecture of rail transit platform door control systems.

[0008] Firstly, a centralized rail transit door system is provided, comprising: A domain controller, at least one gate controller, and at least one intelligent I / O; The software architecture of the domain controller, gate controller, and intelligent I / O all includes an application layer, a security platform layer, and a basic software layer; the security platform layers of the gate controller and intelligent I / O communicate with the security platform layer of the domain controller. The application layer of the domain controller obtains the status data C of the connected external device through its own security platform layer and basic software layer in sequence. The application layer of the gate controller obtains the status data A of the connected external device through its own security platform layer and basic software layer in sequence, and sends the status data A to the application layer of the domain controller through the communication security platform layer. The application layer of the intelligent IO obtains the status data B of the connected external device through its own security platform layer and basic software layer in sequence, and sends the status data B to the application layer of the domain controller through the communication security platform layer. The application layer of the domain controller generates control commands A, B, and C respectively based on the received status data A, B, and C, and generates execution instructions C based on control commands C. The execution instructions C are then fed back to the external devices connected to the controller. Control commands A and B are fed back to the application layer of the door controller and the application layer of the intelligent IO respectively through the secure communication platform layer. The application layer of the door controller generates execution instruction A based on control command A and feeds back execution instruction A to the external device it is connected to. The application layer of the intelligent IO generates execution instruction B based on control command B and feeds back execution instruction B to the external device it is connected to.

[0009] Furthermore, the application layer of the door controller includes a status acquisition unit for acquiring status data A and a command execution unit for generating and sending execution instruction A; The application layer of the intelligent IO includes a status acquisition unit for acquiring status data B and a command execution unit for generating and sending execution instructions B.

[0010] Furthermore, the status acquisition unit of the door controller sends an acquisition command A to its own security platform layer. The security platform layer of the door controller obtains status data A according to the acquisition command A and sends it to the status acquisition unit. After obtaining the status data A, the status acquisition unit of the door controller sends the status data A to the application layer of the domain controller through the communication security platform layer. The intelligent IO status acquisition unit sends an acquisition command B to its own security platform layer. The intelligent IO security platform layer acquires status data B according to the acquisition command B and sends it to the status acquisition unit. After acquiring the status data B, the intelligent IO status acquisition unit sends the status data B to the application layer of the domain controller through the communication security platform layer.

[0011] Furthermore, the security platform layer includes a communication interface and an external communication module connected to the communication interface, and the security platform layers communicate with each other through the external communication module; In the door controller, the security platform layer and the application layer transmit status data A and control commands A through a communication interface; In intelligent I / O, the security platform layer and the application layer transmit status data B and control commands B through a communication interface; In a domain controller, the security platform layer and the application layer transmit status data A, control command A, status data B, and control command B through a communication interface.

[0012] Furthermore, the security platform layer also includes an interface module and a preprocessing module; In the door controller, the preprocessing module obtains the status data A from the basic software layer, performs preprocessing, and sends the preprocessed status data A to its own application layer through the interface module; the preprocessing module receives the execution instruction A sent by its own application layer through the interface module, performs preprocessing on the execution instruction A, and feeds back the preprocessed execution instruction A to the external device it is connected to. In intelligent IO, the preprocessing module obtains state data B from the basic software layer, performs preprocessing, and sends the preprocessed state data B to its own application layer through the interface module; the preprocessing module receives execution instructions B sent by its own application layer through the interface module, performs preprocessing on the execution instructions B, and feeds back the preprocessed execution instructions B to the external device it is connected to. In the domain controller, the preprocessing module obtains the status data C from the basic software layer, preprocesses it, and sends the preprocessed status data C to its own application layer through the interface module; the preprocessing module receives the execution instruction C sent by its own application layer through the interface module, preprocesses the execution instruction C, and feeds back the preprocessed execution instruction C to the external device it is connected to.

[0013] Furthermore, the external devices of the door controller include a door control execution device, which is a motor. The interface module and preprocessing module corresponding to the motor are the motor interface and the motor control module, respectively. The motor is connected to the basic software layer through a motor drive circuit.

[0014] Furthermore, the external devices of the domain controller, gate controller, and intelligent IO all include non-gated execution devices with network communication and non-gated execution devices with network communication; the non-gated execution devices with network communication are connected to the basic software layer through input / output circuits; the non-gated execution devices with network communication are connected to the basic software layer through network communication circuits.

[0015] Secondly, a centralized control method for rail transit doors is provided, applied to a centralized rail transit door system as described in the first aspect, the method comprising the following steps: The application layer of the domain controller obtains the status data C of the connected external devices sequentially through its own security platform layer and basic software layer; The application layer of the gate controller obtains the status data A of the connected external device through its own security platform layer and basic software layer, and sends the status data A to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of intelligent IO obtains the status data B of the connected external device through its own security platform layer and basic software layer, and sends the status data B to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of the domain controller generates control commands A, B, and C based on the received status data A, B, and C, respectively. It then generates execution instruction C based on control command C and feeds back execution instruction C to the external device connected to the domain controller. At the same time, control commands A and B are sent to the application layer of the door controller and the application layer of the intelligent IO through the secure communication platform layer, respectively. The application layer of the door controller generates an execution instruction A based on the control command A, and then feeds back the execution instruction A to the external device connected to the door controller. The application layer of the intelligent IO generates an execution instruction B based on the control command B, and then feeds back the execution instruction B to the external device connected to the intelligent IO.

[0016] 1. This invention solves the problem of insufficient independent decision-making and cross-gate coordination capabilities of each control node in the existing system by setting up a domain controller, a gate controller, and intelligent I / O, and by having the application layer of the domain controller perform unified calculations and judgments on the status data A, status data B, and status data C from each node, and centrally generate control commands A, B, and C, thereby improving the centralized coordination capability of the system.

[0017] 2. This invention solves the problems of inconsistent software structure and high coupling in existing systems by uniformly setting up the application layer, security platform layer and basic software layer in the domain controller, gate controller and intelligent IO, so that the acquisition and processing of status data and the generation and execution of control commands form a standard data transmission structure, and realizes layered isolation between applications and drivers.

[0018] 3. This invention enables communication between the security platform layer of the gate controller and the intelligent IO and the security platform layer of the domain controller, so that the uploading of status data and the issuance of control commands are all transmitted through the security platform layer, thereby solving the problem of inconsistent data interaction methods in the prior art; and the domain controller centrally generates control commands, and the child nodes generate execution instructions based on the control commands and feed them back to their respective connected external devices, realizing a control mode of centralized decision-making and hierarchical execution, thereby improving the overall coordination of system operation. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic diagram of the domain controller structure of a centralized rail transit door system provided in an embodiment of the present invention; Figure 2 The diagram shown is a schematic diagram of the door controller structure of a centralized rail transit door system provided in an embodiment of the present invention; Figure 3 The diagram shown is a schematic diagram of the intelligent I / O structure of a centralized rail transit door system provided in an embodiment of the present invention; Figure 4 The diagram shown is an overall structural framework diagram of a centralized rail transit door system provided in an embodiment of the present invention. Detailed Implementation

[0020] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0021] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0022] In one specific implementation, such as Figure 4 As shown, a centralized rail transit door system is provided, including a domain controller, at least one door controller, and at least one intelligent I / O.

[0023] like Figure 1 As shown, the domain controller is the decision-making core of the centralized rail transit door system. The software architecture of the domain controller includes an application layer, a security platform layer, and a basic software layer. The security platform layer of the door controller and the intelligent IO both communicate with the security platform layer of the domain controller.

[0024] The application layer of the domain controller sequentially obtains the status data C of the connected external devices through its own security platform layer and basic software layer, and simultaneously receives status data A uploaded from the gate controller and status data B uploaded from the intelligent IO. The application layer of the domain controller performs calculations and judgments based on status data A, status data B, and status data C, and generates control commands A, B, and C respectively, and generates execution instructions C based on control commands C. Control commands A and B are sent to the gate controller and intelligent IO respectively through the communication security platform layer, and execution instructions C are fed back to the external devices connected to the domain controller itself.

[0025] The security platform layer of the domain controller includes a communication interface and an external communication module connected to the communication interface. The security platform layers communicate with each other through the external communication module. In the domain controller, the security platform layer and the application layer transmit status data A, control command A, status data B and control command B through the communication interface, thereby realizing bidirectional data interaction between the domain controller and the gate controller and intelligent IO.

[0026] The security platform layer of the domain controller also includes an interface module and a preprocessing module. The preprocessing module obtains state data C from the basic software layer, performs preprocessing, and sends the preprocessed state data C to the application layer through the interface module. At the same time, the preprocessing module receives the execution instruction C sent by the application layer through the interface module, performs preprocessing on the execution instruction C, and then feeds it back to the external device connected to the domain controller through the basic software layer.

[0027] The external devices of the domain controller include network-communication non-gated execution devices and non-network-communication non-gated execution devices; the non-network-communication non-gated execution devices are connected to the basic software layer through input / output circuits; the network-communication non-gated execution devices are connected to the basic software layer through network communication circuits.

[0028] Combination Figure 1 The application layer of the domain controller includes a door logic processing unit, a gap detection logic processing unit, a signal interface logic processing unit, and a local control panel / emergency control panel logic processing unit. The door logic processing unit comprehensively judges the door status, opening and closing commands, and safety interlocking conditions. The gap detection logic processing unit judges the gap status between the platform door and the train. The signal interface logic processing unit enables data interaction with the signal system. The local control panel / emergency control panel logic processing unit responds to on-site manual control and emergency control requests.

[0029] Combination Figure 1The security platform layer of the domain controller includes an input interface, an output interface, a communication interface, and platform function modules. The platform function modules include a system management module, an input processing module, an output processing module, an internal communication module, an external communication module, a system maintenance module, a self-test module, a clock synchronization module, and a fault handling module. The input processing module filters, parses, and validates the status data C from the basic software layer. The output processing module performs permission verification and format conversion on the execution instruction C. The external communication module enables data communication between the gate controller and the intelligent I / O.

[0030] Combination Figure 1 The basic software layer of the domain controller includes an operating system and a hardware driver layer, which are used to drive input / output circuits and network communication circuits. The basic software layer collects status data of non-network communication external devices through input / output circuits and collects status data of network communication external devices through network communication circuits, and uploads the collected data to the security platform layer. At the same time, it controls the input / output circuits or network communication circuits according to the execution instruction C to realize the control of external devices.

[0031] like Figure 2 As shown, the door controller is used to implement door execution control and status acquisition. The software architecture of the door controller includes an application layer, a security platform layer, and a basic software layer, and the security platform layer of the door controller communicates with the security platform layer of the domain controller.

[0032] The application layer of the gate controller includes a status acquisition unit for acquiring status data A and a command execution unit for generating and sending execution instruction A.

[0033] Specifically, the status acquisition unit is used to send an acquisition command A to the security platform layer and receive status data A processed by the security platform layer; the command execution unit is used to receive a control command A from the domain controller, parse the control command A, and generate an execution command A.

[0034] The status acquisition unit of the gate controller sends an acquisition command A to its own security platform layer. The security platform layer obtains status data A through the basic software layer according to the acquisition command A and sends the status data A to the status acquisition unit. After obtaining the status data A, the status acquisition unit sends the status data A to the application layer of the domain controller through the communication security platform layer.

[0035] like Figure 2As shown, the basic software layer of the door controller includes an operating system and a hardware driver layer, which are used to complete the low-level drive control of the input / output circuit, motor drive circuit and network communication circuit. The door controller collects status data of non-network communication external devices such as door opening / closing status, electromagnet status, indicator light status, and buzzer status through the input / output circuit; collects status data of network communication devices through the network communication circuit; and obtains the operating status data of the door control actuator motor through the motor drive circuit.

[0036] like Figure 2 As shown, the security platform layer of the door controller is located between the application layer and the basic software layer, and includes an input interface, an output interface, a communication interface, a motor interface, and platform function modules; the platform function modules include a system management module, a fault handling module, an input processing module, an output processing module, an internal communication module, an external communication module, a system maintenance module, a self-test function module, a clock synchronization module, and a motor control module.

[0037] The input processing module is used to filter, parse, and validate the status data A from the basic software layer; the output processing module is used to validate permissions and convert the format of the execution command A issued by the application layer; the external communication module is used to realize data communication with the domain controller; the motor control module is used to generate a motor drive curve according to the execution command A to realize motor start-stop control, speed control, position control, and fault protection.

[0038] The security platform layer of the door controller also includes an interface module and a preprocessing module. The preprocessing module preprocesses the status data A obtained from the basic software layer and sends the preprocessed status data A to the application layer through the interface module. At the same time, the preprocessing module receives the execution instruction A sent by the application layer through the interface module, preprocesses the execution instruction A, and then feeds it back to the connected external device through the basic software layer.

[0039] The external devices of the door controller include a door control execution device, which is a motor; the interface module corresponding to the motor is a motor interface, and the corresponding preprocessing module is a motor control module; the motor is connected to the basic software layer through a motor drive circuit, thereby realizing the drive control of the door.

[0040] During operation, the status acquisition unit of the gate controller first sends a data acquisition request to the basic software layer through the security platform layer. The basic software layer obtains the status data A through the input / output circuit, motor drive circuit and network communication circuit, and sends it to the input processing module of the security platform layer for processing. Then, it is uploaded to the application layer through the interface module. Subsequently, the status acquisition unit sends the status data A to the domain controller through the external communication module.

[0041] When the door controller receives the control command A issued by the domain controller, the command execution unit parses the control command A, generates the execution instruction A, and sends it to the preprocessing module for processing through the interface module. Then, it controls the corresponding external devices to execute through the output interface, motor interface or communication interface, so as to realize the door control and related peripheral control.

[0042] like Figure 3 As shown, the intelligent IO is an input / output extension node in a centralized system. Its software architecture includes an application layer, a security platform layer, and a basic software layer, and the security platform layer is communicatively connected to the security platform layer of the domain controller.

[0043] The basic software layer of the intelligent IO includes an operating system and a hardware driver layer, which are used to drive input / output circuits and network communication circuits to realize the low-level data acquisition and control execution of external devices.

[0044] The intelligent IO security platform layer is located between the application layer and the basic software layer. It is used to standardize the status data from the basic software layer and to convert and verify the execution instructions issued by the application layer. The security platform layer includes an input interface, an output interface, a communication interface, as well as a system management module, an input processing module, an output processing module, an internal communication module, an external communication module, a system maintenance module, a self-test module, and a fault handling module.

[0045] The application layer of the intelligent IO includes a status acquisition unit and a command execution unit; the status acquisition unit is used to acquire status data B of the external device connected to the intelligent IO, and the command execution unit is used to receive control commands B from the domain controller and generate execution instructions B.

[0046] In the status data uplink process, the status acquisition unit sends acquisition command B to the security platform layer. The security platform layer, based on acquisition command B, calls the basic software layer to acquire status data from the local control panel, emergency control panel, and other external system devices via input / output circuits, and also acquires status data from network communication devices via network communication circuits. The acquired data is filtered, parsed, and validated by the input processing module, and then uploaded to the application layer status acquisition unit via the interface module. The status acquisition unit encapsulates the status data B and sends it to the domain controller via the external communication module of the security platform layer.

[0047] In the control command downlink process, the intelligent IO receives control command B from the domain controller through the external communication module of the security platform layer; the control command B is uploaded to the application layer command execution unit for parsing via the communication interface; the command execution unit generates execution instruction B based on the control command B; the execution instruction B is sent to the preprocessing module for conversion and verification through the interface module, and then sent down to the basic software layer through the output interface or communication interface, whereby the basic software layer controls the corresponding external device to execute through input / output circuits or network communication circuits.

[0048] It should be noted that, compared with the door controller, the intelligent IO does not include the motor interface and motor control module, and does not participate in the door drive control. Its function is limited to external input and output control and network communication data interaction, thereby realizing the modular separation of control functions.

[0049] This embodiment also provides a centralized control method for rail transit doors, the method comprising the following steps: The application layer of the domain controller obtains the status data C of the connected external devices sequentially through its own security platform layer and basic software layer; The application layer of the gate controller obtains the status data A of the connected external device through its own security platform layer and basic software layer, and sends the status data A to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of intelligent IO obtains the status data B of the connected external device through its own security platform layer and basic software layer, and sends the status data B to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of the domain controller generates control commands A, B, and C based on the received status data A, B, and C, respectively. It then generates execution instruction C based on control command C and feeds back execution instruction C to the external device connected to the domain controller. At the same time, control commands A and B are sent to the application layer of the door controller and the application layer of the intelligent IO through the secure communication platform layer, respectively. The application layer of the door controller generates an execution instruction A based on the control command A, and then feeds back the execution instruction A to the external device connected to the door controller. The application layer of the intelligent IO generates an execution instruction B based on the control command B, and then feeds back the execution instruction B to the external device connected to the intelligent IO.

[0050] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A centralized door system for rail transit, characterized in that, include: A domain controller, at least one gate controller, and at least one intelligent I / O; The software architecture of the domain controller, gate controller, and intelligent I / O all includes an application layer, a security platform layer, and a basic software layer; the security platform layers of the gate controller and intelligent I / O communicate with the security platform layer of the domain controller. The application layer of the domain controller obtains the status data C of the connected external device through its own security platform layer and basic software layer in sequence. The application layer of the gate controller obtains the status data A of the connected external device through its own security platform layer and basic software layer in sequence, and sends the status data A to the application layer of the domain controller through the communication security platform layer. The application layer of the intelligent IO obtains the status data B of the connected external device through its own security platform layer and basic software layer in sequence, and sends the status data B to the application layer of the domain controller through the communication security platform layer. The application layer of the domain controller generates control commands A, B, and C respectively based on the received status data A, B, and C, and generates execution instructions C based on control commands C. The execution instructions C are then fed back to the external devices connected to the controller. Control commands A and B are fed back to the application layer of the door controller and the application layer of the intelligent IO respectively through the secure communication platform layer. The application layer of the door controller generates execution instruction A based on control command A and feeds back execution instruction A to the external device it is connected to. The application layer of the intelligent IO generates execution instruction B based on control command B and feeds back execution instruction B to the external device it is connected to.

2. The centralized door system for rail transit according to claim 1, characterized in that, The application layer of the gate controller includes a status acquisition unit for acquiring status data A and a command execution unit for generating and sending execution instruction A; The application layer of the intelligent IO includes a status acquisition unit for acquiring status data B and a command execution unit for generating and sending execution instructions B.

3. A centralized rail transit door system according to claim 2, characterized in that, The status acquisition unit of the door controller sends an acquisition command A to its own security platform layer. The security platform layer of the door controller obtains status data A according to the acquisition command A and sends it to the status acquisition unit. After obtaining the status data A, the status acquisition unit of the door controller sends the status data A to the application layer of the domain controller through the communication security platform layer. The intelligent IO status acquisition unit sends an acquisition command B to its own security platform layer. The intelligent IO security platform layer acquires status data B according to the acquisition command B and sends it to the status acquisition unit. After acquiring the status data B, the intelligent IO status acquisition unit sends the status data B to the application layer of the domain controller through the communication security platform layer.

4. A centralized rail transit door system according to claim 1 or 3, characterized in that, The security platform layer includes a communication interface and an external communication module connected to the communication interface. The security platform layers communicate with each other through the external communication module. In the door controller, the security platform layer and the application layer transmit status data A and control commands A through a communication interface; In intelligent I / O, the security platform layer and the application layer transmit status data B and control commands B through a communication interface; In a domain controller, the security platform layer and the application layer transmit status data A, control command A, status data B, and control command B through a communication interface.

5. A centralized door system for rail transit according to claim 4, characterized in that, The security platform layer also includes an interface module and a preprocessing module; In the door controller, the preprocessing module preprocesses the state data A obtained from the basic software layer and sends the preprocessed state data A to its own application layer through the interface module. The preprocessing module receives the execution instruction A sent by its own application layer through the interface module, preprocesses the execution instruction A, and feeds back the preprocessed execution instruction A to the external device it is connected to. In intelligent IO, the preprocessing module preprocesses the state data B obtained from the basic software layer and sends the preprocessed state data B to its own application layer through the interface module. The preprocessing module receives the execution instruction B sent by its own application layer through the interface module, preprocesses the execution instruction B, and feeds back the preprocessed execution instruction B to the external device it is connected to. In the domain controller, the preprocessing module preprocesses the state data C obtained from the basic software layer and sends the preprocessed state data C to its own application layer through the interface module. The preprocessing module receives the execution instruction C sent by its own application layer through the interface module, preprocesses the execution instruction C, and feeds back the preprocessed execution instruction C to the external device it is connected to.

6. A centralized door system for rail transit according to claim 5, characterized in that, The external devices of the door controller include a door control execution device, which is a motor. The interface module and preprocessing module corresponding to the motor are the motor interface and the motor control module, respectively. The motor is connected to the basic software layer through a motor drive circuit.

7. A centralized rail transit door system according to claim 6, characterized in that, The external devices of the domain controller, gate controller, and intelligent IO all include non-gated execution devices with network communication and non-gated execution devices with network communication; the non-gated execution devices with network communication are connected to the basic software layer through input / output circuits; the non-gated execution devices with network communication are connected to the basic software layer through network communication circuits.

8. A centralized control method for rail transit doors, characterized in that, Applied to a centralized rail transit door system according to any one of claims 1-7, the method comprises the following steps: The application layer of the domain controller obtains the status data C of the connected external devices sequentially through its own security platform layer and basic software layer; The application layer of the gate controller obtains the status data A of the connected external device through its own security platform layer and basic software layer, and sends the status data A to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of intelligent IO obtains the status data B of the connected external device through its own security platform layer and basic software layer, and sends the status data B to the application layer of the domain controller through the security platform layer that communicates with the domain controller. The application layer of the domain controller generates control commands A, B, and C based on the received status data A, B, and C, respectively. It then generates execution instruction C based on control command C and feeds back execution instruction C to the external device connected to the domain controller. At the same time, control commands A and B are sent to the application layer of the door controller and the application layer of the intelligent IO through the secure communication platform layer, respectively. The application layer of the door controller generates an execution instruction A based on the control command A, and then feeds back the execution instruction A to the external device connected to the door controller. The application layer of the intelligent IO generates an execution instruction B based on the control command B, and then feeds back the execution instruction B to the external device connected to the intelligent IO.

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