Rail transit door control system and control method

Abstract

The present invention discloses a rail transit door control system and control method, the control system includes a network configuration control unit, a door control integration platform and a door control terminal device, a door system master control unit is arranged in the door control integration platform, and is used to control the door control terminal device; the door control terminal device is used to execute control; the network configuration control unit is used to configure the priority and transmission time slot of system security data and non-security data, and the network configuration control unit, the door control integration platform and the door control terminal device are connected through a TSN real-time network. The control system of the present invention does not change the overall layout of the existing rail transit door system, does not add additional network equipment, and can conveniently realize application function expansion on the door control integration platform to realize software-defined functions; at the same time, it reduces the problem of synchronously changing the door system master control unit and the door control terminal device hardware and software caused by the change of door system requirements.

Description

Technical Field

[0001] The present invention relates to a control system and a control method, in particular to a rail transit door system control system and a control method. Background Art

[0002] The existing rail transit door system adopts a device-based control architecture. Take the door system as an example: a control unit is set in the vehicle TCMS (Train Control and Monitoring System), and a control unit is set in the door system. The control units of both parties interact in real time and operate collaboratively. Two sets of networks are generally used between the vehicle TCMS and the door system: a control network and a maintenance network. The control unit of the door system is connected to the vehicle control network and the maintenance network respectively. The vehicle TCMS collects the information of the door system through the control network to perform safety control processing on the door system; it collects the maintenance information of the door system through the maintenance network to perform non-safety processing on the door system. Figure 1 As shown. Under this architecture, since the control unit in the vehicle TCMS and the control unit of the door system both contain logic control parts, once the functional requirements of the door system change, the software and hardware of the TCMS control unit and the software and hardware of the door system need to be updated at the same time. Hardware changes increase costs; software changes increase maintenance workload and increase re-certification costs. At the same time, the coexistence of two networks not only increases the cost and weight of cables, but also makes it impossible to integrate the data of the two networks in real time to complete more intelligent control and operation and maintenance. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a function-based rail transit door control system and control method. The door system master control unit of the gate control integration platform adopts the design architecture of the middleware layer to decouple the application program from the underlying hardware. The hardware platform is standardized to avoid frequent hardware changes. At the same time, the application function expansion can be easily implemented on the gate control integration platform to realize software-defined functions. At the same time, the function-based control system decouples the gate control integration platform from the gate control terminal equipment, reducing the problem of synchronously changing the hardware and software of the door system master control unit and the door control terminal equipment caused by changes in door system requirements. The gate control terminal equipment is standardized, and the gate control integration platform is expandable, avoiding the problem of increased hardware costs caused by changes in door system requirements, and also avoiding maintenance problems and repeated authentication problems caused by software changes. Technical solution: The rail transit door control system described in the present invention includes: a network configuration control unit, a gate control integration platform and a gate control terminal equipment;

[0004] The door control integrated platform is provided with a door system master control unit for controlling the door control terminal device; the door control terminal device is used to perform rail transit door control;

[0005] The network configuration control unit is used to configure the priority and transmission time slot of system security data and non-security data to meet the co-network transmission requirements of real-time data and best-effort data of the door system;

[0006] The network configuration control unit, door control integration platform and door control terminal equipment are connected via the TSN real-time network.

[0007] Furthermore, the door control integration platform is provided with a standardized interface, and performs secure data transmission with the door control terminal equipment through a standard interface protocol, and is compatible with door control terminal equipment of different manufacturers having a standard interface.

[0008] Furthermore, two sets of door system master control units are provided to realize hot standby redundant control; the two sets of door system master control units simultaneously receive configuration information of the network configuration control unit and information of the door control terminal device for system data processing, and only a single door system master control unit sends data to the door control terminal device at the same time.

[0009] Furthermore, the network configuration control unit, the gate control integration platform and the gate control terminal device are connected through a TSN real-time network, and the network connection mode includes: a linear TSN network, a ring TSN network, a trapezoidal TSN network or a bus with TSN characteristics.

[0010] Furthermore, the door control terminal device is a standard execution device, provided with a standardized interface, and communicates with the door control integration platform.

[0011] Furthermore, the door system master control unit includes a safety control unit circuit and a digital control unit circuit; the safety control unit circuit is used to perform safety functions and realize SIL2, SIL3 or SIL4 safety level functions, and the digital control unit circuit is used to perform non-safety functions and realize multimedia information processing functions such as image processing and video detection; the safety control unit circuit and the digital control unit circuit are physically isolated.

[0012] Furthermore, the safety control unit circuit achieves SIL4 functional safety level through a functional safety method, and the functional safety method includes 2 times 2 to get 2, or 3 times 2, or 2 times 2; other equivalent implementation methods may also be used.

[0013] Furthermore, the software architecture of the digital control unit circuit includes a hardware driver layer, an operating system layer, a middleware layer, and an application layer. The middleware layer separates the application software and the underlying driver by standardizing the interface between the hardware driver layer and the application layer, and can adapt to different hardware platforms and different communication methods to achieve software standardization on different hardware platforms. The functional expansion of the application software only requires adding corresponding program modules to the application layer, and the hardware driver layer does not need to be changed, thereby achieving the decoupling of the application layer software and the underlying hardware driver layer software.

[0014] The rail transit door control method of the present invention comprises the following steps:

[0015] The door control terminal equipment is connected to the network configuration control unit and the door control integration platform through the TSN real-time network, and the door control terminal equipment is controlled by the door system master control unit in the door control integration platform;

[0016] The network configuration control unit configures the priority and transmission time slot of system safety data and non-safety data to meet the common network transmission requirements of the door system's real-time data and best-effort data.

[0017] The computer-readable storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, the rail transit door control method is implemented.

[0018] Beneficial effects: Compared with the prior art, the advantages of the present invention are: (1) The control system of the present invention does not change the overall layout of the vehicle network. It only needs to replace the existing standard Ethernet switch with a TSN network switch without adding other network devices; (2) The door system master control unit of the present invention adopts the design architecture of the middleware layer to decouple the application program from the underlying hardware, and the hardware platform is standardized to avoid frequent changes in the hardware. At the same time, it can easily implement application function expansion on the door control integration platform to realize software-defined trains; (3) The door system master control unit of the present invention contains a safety control unit circuit for executing safety functions and a digital control unit circuit for executing non-safety functions, which not only ensures the isolation of safety functions from non-safety functions, but also ensures the scalability of non-safety function units; (4) The present invention reduces the coupling degree between the door control integration platform and the door control terminal equipment, and reduces the problem of synchronously changing the hardware and software of the door control integration platform and the door control terminal equipment caused by changes in door system requirements; (5) The door control terminal equipment of the present invention only retains the terminal execution function and is provided in the form of standard parts, which not only avoids the problem of increased hardware cost caused by changes in door system requirements, but also avoids the maintenance problems and re-authentication problems caused by software changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the architecture of a device-based door control system in the prior art;

[0020] Figure 2 This is a schematic diagram of the rail transit door control system of the present invention;

[0021] Figure 3 The hardware architecture diagram of the door system master control unit of the present invention;

[0022] Figure 4 The software architecture diagram of the door system master control unit of the present invention;

[0023] Figure 5 1 is a diagram of the control system architecture of a door system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0025] like Figure 2 As shown, the rail transit door control system of the present invention changes the existing device-based control system into a function-based control system. The door system master control unit runs on the door control integrated platform. The hardware platform is universal and has a standardized interface. It transmits secure data with the door control terminal equipment through a standard interface protocol and is compatible with door control terminal equipment from different manufacturers with a standard interface. The door control integrated platform controls the door control terminal equipment through the TSN real-time network.

[0026] Add a network configuration control unit in the control system to complete the priority configuration and transmission time slot configuration of various data in the door system, so as to realize the real-time transmission of safety data and non-safety data on the same network, and realize system network integration and intelligent control. The network configuration control unit is the control data configuration center of the entire network, and is only configured when the system network is initialized. If other terminal devices other than the door system terminal devices are connected to the network, the network configuration control unit can be used to increase the priority configuration of various data streams of other terminal devices.

[0027] The control system of the present invention does not change the overall layout of the existing vehicle network. It only needs to replace the existing vehicle switch with a real-time Ethernet (TSN) switch without adding other network devices.

[0028] This embodiment describes the control system of the door system in detail. The logic control part of the door system is separated to the door system master control unit in the door control integration platform, and the door control terminal device only retains the terminal execution function and is provided in the form of standard parts.

[0029] The control system between the door system master control unit and the door control terminal equipment in the door control integrated platform is as follows: Figure 2 As shown, the system realizes redundant control through two sets of door system master control units, ensuring that the damage of a single door system master control unit does not affect the system control function, and at the same time ensuring that the damage of a single point of the door system network does not affect the control of the door, ensuring the safety of door control. The door system master control unit communicates with the door control terminal device through TSN Ethernet or a bus with TSN characteristics. If it is based on TSN Ethernet, the connection method can be linear, ring, trapezoidal or other. If it is based on a bus with TSN characteristics, it is directly connected in the form of a bus. Figure 2 The figure shows a schematic diagram of network connection based on TSN Ethernet in this embodiment.

[0030] like Figure 3As shown in the figure, the door system master control unit consists of two parts. One part is the safety control unit circuit that performs safety functions. The safety control unit can run a safe real-time operating system or not. The other part is the digital control unit circuit that performs non-safety functions. Various operating systems can be run on the digital control unit to process non-safety functions. The safety control and digital control units are physically isolated, and the isolation and interaction of safety functions and non-safety functions are achieved through protection management methods such as shared memory.

[0031] The safety control unit circuit realizes the SIL4 functional safety level of the door system safety function by multiplying 2 by 2 or taking 2 out of 3 or other functional safety implementation methods.

[0032] The digital control unit circuit uses a CPU with strong compatibility and computing power. There is no need to change the hardware platform in the future, and the application function integration and expansion can be directly carried out in the door control integration platform. The software of the digital control unit circuit is designed according to the hardware driver layer, operating system layer, middleware layer, and application layer. Figure 4 As shown. The hardware driver layer is responsible for abstracting the underlying hardware and communication methods; the operation driver layer is responsible for providing hardware with services such as thread creation; the middleware layer is responsible for connecting with different operating systems and providing communication, resource management and other services to upper-level applications; the application layer is responsible for system application functions. In this control system, the middleware layer isolates the application from the underlying hardware, which not only improves the standardization of the hardware platform, but also allows for flexible addition and subtraction of application configurations.

[0033] The control system of the present invention is used to control the rail transit door system. Figure 5 As shown in the figure, the system network architecture is implemented using the TSN network. The network configuration control unit configures the priority of all data streams in the entire system through the TSN network. The door system master control unit includes the door application, the middleware layer (runtime environment), the operating system, the hardware abstraction layer, the network abstraction layer, and the hardware driver layer. If other applications need to be added, only the corresponding application program needs to be added to the door system master control unit, which can facilitate the expansion and integration of functions.

[0034] The rail transit door control method of the present invention comprises the following steps:

[0035] After the system is established, the network configuration control unit completes the priority configuration and transmission time slot configuration of the data stream during initialization. If the system changes, the network initialization configuration needs to be completed again.

[0036] The door control integration platform receives control information from the door control terminal equipment and other systems (such as TCMS, etc.), completes the processing of safety functions and non-safety functions, transmits safety control instructions to the door control terminal equipment through the TSN network to complete the door control; transmits non-safety instructions to the door control terminal equipment through the TSN network to complete the door maintenance. The door control terminal equipment is connected to the door control integration platform through the TSN Ethernet, receives control instructions from the door control integration platform to complete the door execution, receives maintenance instructions from the door control integration platform to complete the door maintenance; at the same time, it receives local sensor signals and feeds them back to the door control integration platform through the TSN network.

[0037] The two door system master control units in the door control integration platform are hot standby redundant to each other. They simultaneously collect local sensor data, receive information from other systems (such as TCMS, etc.), and receive information from door control terminal devices, and perform logical processing independently. However, only the main door system master control unit is allowed to output at the same time. The two door system master control units communicate in real time to obtain heartbeat information. In the event of failure of the main door system master control unit, the standby door system master control unit is allowed to output. Once the main door system master control unit is detected to be restored, the output is switched to the main door system master control unit again.

[0038] If the door system needs to add additional functional applications, it only needs to add the corresponding application program in the application layer of the door system master control unit without changing the hardware and underlying software.

[0039] The computer-readable storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, the rail transit door control method is implemented.

[0040] The computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer.

[0041] The processor is used to execute the computer program stored in the memory to implement each step of the method involved in the above embodiment.

Claims

1. A rail transit door control system, characterized in that: include: Network configuration control unit, door control integration platform and door control terminal equipment; The door control integrated platform is provided with a door system master control unit for controlling the door control terminal device; the door control terminal device is used to perform rail transit door control, and it only has a terminal execution function and is provided in the form of a standard part; The network configuration control unit is used to configure the priority and transmission time slot of system security data and non-security data; The network configuration control unit, door control integration platform and door control terminal equipment are connected via the TSN real-time network; The door system master control unit includes a safety control unit circuit and a digital control unit circuit; the safety control unit circuit is used to perform safety functions, and the levels of the safety functions include SIL2, SIL3, and SIL4; the digital control unit circuit is used to perform non-safety functions and realize multimedia information processing; the safety control unit circuit and the digital control unit circuit are physically isolated; The software architecture of the digital control unit circuit includes a hardware driver layer, an operating system layer, a middleware layer and an application layer. The middleware layer separates the application software and the underlying driver by standardizing the interface between the hardware driver layer and the application layer.

2. The rail transit door control system according to claim 1, characterized in that: The door control integrated platform is provided with a standardized interface, and performs secure data transmission with the door control terminal equipment through a standard interface protocol.

3. The rail transit door control system according to claim 1, characterized in that: The door system master control unit is provided with two sets to realize hot standby redundant control; the two sets of door system master control units simultaneously receive the configuration information of the network configuration control unit and the information of the door control terminal equipment to process the system data, and only a single door system master control unit sends data to the door control terminal equipment at the same time.

4. The rail transit door control system according to claim 1, characterized in that: The network configuration control unit, the door control integration platform and the door control terminal device are connected through a TSN real-time network, and the network connection mode includes: a linear TSN network, a ring TSN network, a trapezoidal TSN network or a bus with TSN characteristics.

5. The rail transit door control system according to claim 1, characterized in that: The door control terminal device is a standard execution device, provided with a standardized interface, and communicates with the door control integration platform.

6. The rail transit door control system according to claim 1, characterized in that: The safety control unit circuit achieves SIL2, SIL3 or SIL4 functional safety level through a functional safety method, wherein the functional safety method includes 2 times 2 to get 2, or 3 times 2, or 2 times 2.

7. A rail transit door control method, characterized in that: The steps include: The door control terminal equipment is connected to the network configuration control unit and the door control integration platform through the TSN real-time network, and the door control terminal equipment is controlled by the door system master control unit in the door control integration platform; The network configuration control unit performs priority configuration and transmission time slot configuration for system security data and non-security data; The door control terminal equipment only has the terminal execution function and is provided in the form of standard parts; The door system master control unit includes a safety control unit circuit and a digital control unit circuit; the safety control unit circuit is used to perform safety functions, and the levels of the safety functions include SIL2, SIL3, and SIL4; the digital control unit circuit is used to perform non-safety functions and realize multimedia information processing; the safety control unit circuit and the digital control unit circuit are physically isolated; The software architecture of the digital control unit circuit includes a hardware driver layer, an operating system layer, a middleware layer and an application layer. The middleware layer separates the application software and the underlying driver by standardizing the interface between the hardware driver layer and the application layer.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the rail transit door control method according to claim 7 is implemented.

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