Digital platform door control system and control method

Abstract

The invention discloses a digital platform door control system and method. The control system comprises a full-electronic control box, a platform local control panel, a comprehensive backup panel and a plurality of intelligent door control units. The full-electronic control box is in communication connection with the platform local control panel, the comprehensive backup panel and the plurality of intelligent door control units through a CAN (Controller Area Network) bus; the platform local control panel is used for sending a door opening and closing instruction to the full-electronic control box through a CAN bus; the comprehensive backup panel is used for sending a door opening and closing instruction to the full-electronic control box through the CAN bus; the full-electronic control box is further used for receiving door opening and closing instructions transmitted by the vehicle-mounted controller through a network, determining the final door opening and closing instructions according to the priority sequence of the comprehensive backup panel, the platform local control panel and the vehicle-mounted controller and broadcasting the final door opening and closing instructions to all the intelligent door control units through the CAN bus. The intelligent door control units correspond to the platform doors in a one-to-one mode, respond to the door opening and closing instructions sent by the full-electronic control box and control the corresponding platform doors to execute door opening and closing actions.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a digital platform screen door control system and control method. Background Technology

[0002] Both urban rail transit signaling systems and platform screen door systems are critical to ensuring passenger safety and efficient train operation. Currently, existing platform screen door systems and signaling systems generally use relay interfaces, resulting in numerous transmission links, poor maintainability, and significant bottlenecks in linkage efficiency. To overcome these efficiency and maintainability bottlenecks, existing technologies offer integrated solutions for signaling and platform screen door systems. These solutions replace hard-wired interfaces between the platform screen door controller and the urban rail transit signaling system with secure network communication, achieving reduced construction and maintenance costs, improved operational efficiency, simplified system interfaces, extended safety boundaries, and enhanced overall maintenance levels. However, existing integrated solutions are still limited to replacing the communication method between indoor platform screen door control cabinets and the signaling system. Extensive use of hard-wired cables still connects the platform screen door controller and outdoor platform-side control equipment, leading to numerous drive and acquisition devices, many fault points, limited maintenance information, and high debugging and maintenance difficulties. Overall costs are high, the system architecture remains complex, and renovation projects face long construction periods and significant challenges. Furthermore, the hard-wired communication between indoor and outdoor areas cannot flexibly adapt to various scenario requirements; in the overall platform screen door control system, the part that undertakes the function of controlling the opening and closing of doors throughout the station still has room for improvement in terms of safety; and some users have further needs to improve the efficiency of the existing integrated platform screen door control system.

[0003] Overall, the existing integrated solutions for signal-platform doors in the industry still have room for improvement in terms of cost, functionality, maintainability, safety, and efficiency. Summary of the Invention

[0004] The purpose of this invention is to further upgrade the existing integrated "signal-platform door" solution in the industry into a digital platform door control system. This upgrades the indoor and outdoor hard-wired connections to a digital bus-type network connection, realizing a digital platform door control system based on secure CAN bus communication. This achieves efficient and reliable network communication between devices within the system, thereby reducing the difficulty of platform door retrofitting, shortening the construction period, and improving the flexibility, safety, and reliability of platform door control. It also overcomes the shortcomings of fiber optic network connections and further optimizes and improves subsystem architecture and priority judgment modes, resulting in a more cost-effective and architecturally reasonable digital platform door control system.

[0005] To achieve the above objectives, the present invention provides a digital platform door control system, comprising: a platform local control panel interconnected via a CAN bus, a comprehensive backup panel, a fully electronic control box, and multiple intelligent door control units;

[0006] The platform local control panel is deployed in the station hall and is used to send door opening and closing commands to the fully electronic control box via CAN bus;

[0007] The integrated rear cargo box is deployed in the vehicle control room and is used to send door opening and closing commands to the fully electronic control box via the CAN bus;

[0008] The fully electronic control box is deployed in the station hall and communicates with the vehicle controller via a network. The vehicle controller transmits door opening and closing commands to the fully electronic control box via the network. The fully electronic control box is configured to determine the final door opening and closing command according to the control priority order of the integrated backup panel being higher than the platform local control panel, and the platform local control panel being higher than the vehicle controller, and broadcasts the command to all the intelligent door control units via the CAN bus.

[0009] Multiple intelligent door control units are configured one-to-one with platform doors. Each intelligent door control unit responds to the door opening and closing commands sent by the fully electronic control box and controls the corresponding platform door to perform the door opening and closing actions.

[0010] Optionally, the fully electronic control box is connected to all the intelligent door control units via hard wires, and the intelligent door control units collect the closing and locking status of the corresponding platform door via hard wires and transmit it to the fully electronic control box via hard wires;

[0011] The fully electronic control box is configured to generate a closing and locking signal based on the closing and locking status of each platform door, and transmit it to the vehicle controller and computer interlocking system via a network.

[0012] Optionally, the digital platform door control system further includes:

[0013] A maintenance monitoring terminal is deployed in the vehicle control room, and the maintenance monitoring terminal is connected to the all-electronic control box via network communication.

[0014] The all-electronic control box receives parameter modification and / or remote upgrade commands for the intelligent gate control unit sent by the maintenance monitoring terminal via the network, and forwards them to all the intelligent gate control units via the CAN bus;

[0015] The all-electronic control box receives maintenance and status information from the intelligent gate control unit, the platform local control panel, and the integrated backup panel via the CAN bus, and sends the maintenance and status information of the intelligent gate control unit, the platform local control panel, the integrated backup panel, and itself to the maintenance monitoring terminal via the network.

[0016] Optionally, the intelligent door control unit is further configured to respond to manual operation and local single-door opening / closing control operations of the local control box via a hard-wired interface. The control priority of manual operation and local control box is higher than the door opening / closing commands of the integrated backup panel, the platform local control panel and the vehicle controller, and the control priority of manual operation is higher than the control priority of local control box.

[0017] Optionally, the all-electronic control box is also configured to interact with the vehicle controller via a network to exchange alignment and isolation information, and transmit it to the corresponding intelligent gate control unit via a CAN bus.

[0018] Optionally, the platform local control panel includes a PSL controller, the integrated backup panel includes an IBP controller, and the all-electronic control box includes an ECB controller;

[0019] The ECB controller, the PSL controller, and the IBP controller all include the same core processing module and different interface expansion modules, with the core processing module plugged into the interface expansion module.

[0020] The core processing module adopts a security platform with SIL4 level 2oo2 architecture.

[0021] Optionally, the interface expansion module of the ECB controller includes:

[0022] The hard-wire acquisition port is connected to the intelligent door control unit via a hard wire and is used to receive the closing and locking status of the platform door acquired by the intelligent door control unit.

[0023] A secure network port is used to receive door opening and closing commands and alignment isolation information transmitted by the vehicle controller, as well as to send closing and locking signals to the vehicle controller and the computer interlocking system.

[0024] The CAN bus port is used to send parameter modification, remote upgrade commands, and final door opening and closing commands to all the intelligent door control units, to receive maintenance and status information from the intelligent door control units, the platform local control panel, and the integrated backup panel, and to send alignment and isolation information to the corresponding intelligent door control unit.

[0025] The non-secure network port is used to send maintenance and status information of the intelligent gate control unit, the platform local control panel, the integrated backup panel, and the all-electronic control box, and to receive parameter modification and remote upgrade commands from the intelligent gate control unit.

[0026] Optionally, the interface expansion module of the PSL controller includes:

[0027] The hard-wired acquisition port connects to the operation enable button, switch button, door close button, and interlock release button via hard-wired connection.

[0028] The non-safety drive port is connected to multiple indicator lights via hard wiring;

[0029] The CAN bus port is connected to the fully electronic control box via the CAN bus.

[0030] Optionally, the interface expansion module of the IBP controller includes:

[0031] The hard-wired data acquisition port is connected via hard-wired operation enable button, door open button, and door close button;

[0032] The non-safety drive port is connected to multiple indicator lights via hard wiring;

[0033] The CAN bus port is connected to the fully electronic control box via the CAN bus.

[0034] Optionally, the number of platform local control panels is 1 to 3. A single platform local control panel can control all the intelligent gate control units on the same side, and only one platform local control panel is allowed to perform control operations at any given time.

[0035] In a second aspect, the present invention provides a method for controlling the opening of a digital platform screen door, implemented using any of the digital platform screen door control systems provided in the first aspect of the present invention, comprising:

[0036] Once the train has come to a complete stop, the on-board controller issues a door-opening command and transmits it to the fully electronic control box via the network.

[0037] After receiving the door opening command, the all-electronic control box sends the door opening command to all the intelligent door control units via the CAN bus, and the door opening command includes the door opening time.

[0038] After receiving an opening command that matches its own identifier via the CAN bus, the intelligent door control unit controls its corresponding platform door to perform the opening action at the time specified by the opening time.

[0039] Thirdly, the present invention provides a closing control method for a digital platform screen door, implemented using any of the digital platform screen door control systems provided in the first aspect of the present invention, comprising:

[0040] The vehicle controller issues a door closing command and transmits it to the fully electronic control box via the network;

[0041] After receiving the door closing message, the all-electronic control box sends a door closing command to all the intelligent door control units via the CAN bus, and the door closing command includes the closing time.

[0042] After receiving the closing command via the CAN bus, the intelligent door control unit controls the corresponding platform door to perform the closing action at the time specified by the closing time, and collects the closing and locking status of the corresponding platform door via hard wire and transmits it to the fully electronic control box via hard wire.

[0043] The fully electronic control box receives the closing and locking status sent by the intelligent door control unit. After confirming that it has received the closing and locking status sent by the intelligent door control unit corresponding to all platform doors, it sends a closing and locking signal indicating that all platform doors are closed and locked to the vehicle controller and computer interlocking system via the network.

[0044] After receiving the locking signal, the on-board controller controls the train to leave the platform. After receiving the locking signal, the computer interlocking system illuminates the departure signal to allow the train to leave the station.

[0045] Compared with the prior art, the technical solution of the present invention has at least the following technical effects:

[0046] 1. This invention enables high real-time and high-reliability digital network transmission of data between various devices, eliminating the need for hard-wired cables, drive boards, and acquisition boards used for door opening and closing control, thereby significantly reducing the cost of platform screen door systems, reducing construction and maintenance difficulties, and improving system safety and reliability.

[0047] 2. The system of the present invention transmits digital network messages between devices via CAN bus, and can load relevant information of the target device into the standard CAN bus data packet, thereby enabling the platform door to be controlled in different combinations according to different control requirements, thus improving the flexibility of platform door control.

[0048] 3. This invention replaces traditional hard-wired connections with Platform Screen Doors Local Control (PSL) and Integrated Backup Panel (IBP), enabling the control of keys, buttons, and indicator lights on the PSL and IBP panels, thus improving the security of PSL / IBP control. The PSL / IBP allows for flexible definition and configuration of the display logic for keys, buttons, and indicator lights on the control panel according to different project requirements. In contrast, the existing hard-wired connections for PSL / IBP require separate configuration cables and I / O interfaces for each combination, making flexible adjustments difficult.

[0049] 4. In existing control schemes, all control interface functions are hardwired, requiring all wiring and functional testing to be performed on-site. The system function verification of this invention can be performed through laboratory simulation testing; on-site, only CAN bus connection is needed. This allows skipping interface, consistency, and single-system function debugging, and directly performing functional integration testing, reducing on-site construction time.

[0050] 5. The system of this invention eliminates all hard-wired control cables, replacing them with a fully electronic control box (ECB), PSL, and IBP. This enables precise fault location, eliminating the need to troubleshoot each cable individually and reducing maintenance complexity. All systems in this invention communicate via a safe and redundant CAN bus, improving the safety and reliability of platform screen door control compared to traditional single-relay / hard-wired methods.

[0051] 6. The system of the present invention uses a miniaturized and lightweight control box such as ECB to realize the opening and closing control of the entire station doors. It can be installed in a very small area at the door head or next to the end door to replace the traditional platform screen door control system (PSC) cabinet, eliminating the need for data acquisition and drive cables, which can significantly reduce the system cost.

[0052] 7. The opening and closing commands of the vehicle-borne controller (CC) of this invention are sent directly to the ECB through the safe network communication device (DCS switch). The ECB then sends the commands to each intelligent door control unit (iDCU) through the CAN bus. The iDCU drives the door to move. The entire message transmission process eliminates the traditional relay and drive board links, which can greatly improve the efficiency of platform door linkage.

[0053] 8. In this invention, the alignment isolation message is directly transmitted from the vehicle controller to the ECB via a secure network communication device (DCS switch), and then from the ECB to the iDCU via a secure CAN bus, further enhancing the security of the alignment isolation message.

[0054] Therefore, compared with the traditional platform screen door control scheme based on hard-wired circuits, the system of the present invention has improvements in safety, cost, compatibility, maintenance and efficiency, and is more in line with the needs of industry development. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the architecture of a digital platform door control system according to an embodiment of the present invention;

[0056] Figure 2This is a schematic diagram of the security control data flow of a fully electronic control box according to an embodiment of the present invention;

[0057] Figure 3 This is a schematic diagram of the architecture of an ECB controller / PSL controller / IBP controller according to an embodiment of the present invention;

[0058] Figure 4 This is a schematic diagram of the architecture and interface expansion module of an ECB controller according to an embodiment of the present invention;

[0059] Figure 5 This is a schematic diagram of the architecture and interface expansion module of a PSL controller according to an embodiment of the present invention;

[0060] Figure 6 This is a schematic diagram of the architecture and interface expansion module of an IBP controller according to an embodiment of the present invention;

[0061] Figure 7 This is a diagram showing the architecture and external interface of an intelligent gate control unit according to an embodiment of the present invention;

[0062] Figure 8 This is a flowchart illustrating a digital platform door opening control method according to an embodiment of the present invention;

[0063] Figure 9 This is a flowchart illustrating a method for controlling the closing of a digital platform door according to an embodiment of the present invention.

[0064] Figure 10 This is a schematic diagram of priority control in the opening control method of a digital platform door according to an embodiment of the present invention. Detailed Implementation

[0065] The following will be combined with the appendix in the embodiments of the present invention. Figure 1 ~Attached Figure 10 The technical solutions, structural features, objectives and effects achieved in the embodiments of the present invention will be described in detail.

[0066] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the purpose of illustrating the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in the present invention, provided that they do not affect the effects and objectives that the present invention can produce.

[0067] It should be noted that, in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only the expressly listed elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0068] This invention proposes a digital platform screen door control system based on CAN bus secure communication. The overall architecture of the digital platform screen door control system in this embodiment is as follows: Figure 1 As shown. Figure 1 The components within the light gray background represent the platform screen door control system. This system includes the Electronic Control Box (ECB), Platform Screen Doors Local Control (PSL), Integrated Backup Panel (IBP), Intelligent Door Control Unit (iDCU), and Platform Maintenance & Monitor Terminal (PMM). Figure 1 The components in the upper half of the dashed line are deployed in the vehicle control room, while the components in the lower half of the dashed line are deployed in the station hall.

[0069] The fully electronic control box is installed in the top box above the platform screen door and serves as the core control module of the digital platform screen door to realize the opening and closing control function of the entire side door. The fully electronic control box adopts a dual-system primary and backup redundancy design, with both the primary and backup systems connected to the same CAN bus (the bus is A / B system redundant) to ensure the high reliability of the entire system. In each cycle, the fully electronic control box receives the door opening and closing command sent by the vehicle controller (Carborne Controller, abbreviated as CC) of the signal system through network communication related equipment, performs logical operations, and then sends the final door opening and closing command to each intelligent door control unit through secure communication via the CAN bus to execute the entire side door opening / closing operation in the fully automatic operation mode.

[0070] In this embodiment, the ECB, iDCU, PSL, and IBP communicate via a CAN bus. A secure communication processing algorithm is overlaid on the standard CAN 2.0B protocol to ensure that the communication transmission process complies with EN50159 requirements and meets the SIL4 functional safety requirements of the ECB / PSL / IBP modules. Even with a relatively low bandwidth (e.g., 125K), the CAN bus can meet the information transmission needs of devices over long distances (e.g., 400 meters) (for example, when the distance between the fully electronic control box and the furthest intelligent gate control unit it manages exceeds 100 meters).

[0071] The fully electronic control box is connected to the DCS switch in the signal equipment room via a security network port and network cable to enable communication with the Computer Interlocking (CI) system or the vehicle controller (see...). Figure 1 The communication protocols all adopt mature signal safety protocols FSFB2 or RSSP-I, and the communication transmission process also complies with the requirements of EN50159. The fully electronic control box can issue corresponding door opening and closing commands to the intelligent door control unit based on the door opening / closing commands received from the vehicle controller.

[0072] The platform local control panel is used for platform-level control and is a device for station staff to control the opening and closing of platform doors locally. One to three platform local control panels can be installed on one side of the platform. These panels are interlocked, allowing only one panel to operate at a time. Each panel can control all intelligent door control units on the same side. Figure 1 Taking a three-station local control panel on one side as an example, the station local control panel sends station door opening and closing commands to the fully electronic control box via a redundant CAN bus.

[0073] The integrated backup panel is used for emergency control. Located in the duty room / operations room, it can be configured to control the number and range of intelligent door control units as needed. Theoretically, one integrated backup panel can control all intelligent door control units in the entire station. In station emergencies, such as platform fires, system-level or platform-level control failures, station staff can open and close doors from the station control room via the integrated backup panel. The integrated backup panel sends station-wide door opening and closing commands to the fully electronic control box via a redundant CAN bus, achieving emergency control.

[0074] In the event of a malfunction or abnormal event in the fully electronic control box, the train driver or station staff can perform local operations through the local control panel on any platform in the station hall. Station staff can also perform emergency operations in the train control room through the integrated backup panel, driving the iDCUs within their respective control ranges to perform door opening / closing operations in emergency situations.

[0075] The intelligent door control unit is responsible for opening and closing the platform screen doors. Each platform screen door is equipped with one intelligent door control unit, and a single fully electronic control box can manage all intelligent door control units located on the same side (upward or downward). Figure 1 (Taking 40 intelligent door control units as an example). These intelligent door control units are installed in the top box (full-height door) or side box (half-height door) of the platform screen door to achieve single-door opening and closing operations. The intelligent door control unit communicates with the fully electronic control box via a redundant CAN bus, receives the entire side door opening and closing command from the fully electronic control box, drives the motor to realize the platform screen door opening and closing action, and activates the audible and visual alarm device to alert passengers and platform staff. In the event of a single-door opening / closing malfunction or a person or object being trapped, the intelligent door control unit can also respond to manual operation and local single-door opening / closing control operations (performed by staff) via a hard-wired interface through the Local Control Box (LCB). Manual operation and LCB control have higher priority than system-level control commands (IBP, PSL, CC).

[0076] like Figure 2 During normal operation, the entire platform door control system's multi-priority arbitration and final output of all door opening / closing operations are handled by the fully electronic control box. The fully electronic control box receives door opening / closing commands from the local control panel and the integrated backup panel via a secure CAN bus, and from the onboard controller via network communication. When two or three door opening / closing commands are received simultaneously, priority is determined according to the order "IBP control > PSL control > CC control" to confirm the final door opening / closing command. This command is then sent to the intelligent door control units via the CAN bus to drive each unit to perform the entire side's opening / closing operation. Because priority determination is centralized within the fully electronic control box during normal operation, it uniformly issues the same overall door opening / closing control command to all intelligent door control units based on the determination results, thus preventing different intelligent door control units from receiving conflicting door opening / closing control commands.

[0077] The Maintenance Monitoring Terminal (PMM) is mainly responsible for the maintenance and diagnostic support of the platform screen door control system. The PMM is placed on the desktop of the control room in the form of a desktop computer to display maintenance information. The maintenance monitoring terminal communicates with external interfaces such as the Maintenance Support System (MSS) and the Integrated Supervisory Control System (ISCS).

[0078] The all-electronic control box also receives maintenance and status information from the station's local control panel, integrated backup panel, and intelligent gate control unit via a redundant CAN bus. It then sends maintenance and status information from the station's local control panel, integrated backup panel, intelligent gate control unit, and itself to the PMM via the dark gray / light gray redundant network port. Simultaneously, it interacts with the PMM to receive message commands such as parameter modification and remote upgrade for the intelligent gate control unit. After receiving these commands, it forwards them to each intelligent gate control unit via the CAN bus.

[0079] In some embodiments, the fully electronic control box also receives the closing and locking status corresponding to each platform screen door from each intelligent gate control unit via hard wiring, and forms an overall platform screen door closing and locking signal based on the closing and locking status of each platform screen door. This signal is then transmitted via network communication to the on-board controller and computer interlocking system to control the train's departure from the platform. The closing and locking signal, connected and transmitted via hard wiring, ensures the safety of the closing and locking status.

[0080] In some embodiments, the all-electronic control box also interacts directly with the vehicle controller via network communication to exchange alignment isolation messages, and then notifies the corresponding intelligent gating unit of the alignment isolation messages via a safety redundant CAN bus, thereby improving the security of the alignment isolation messages.

[0081] In this embodiment, the security network port (red / blue) and non-security network port (dark gray / light gray) of the all-electronic control box use different physical network ports, which are connected to the DCS switch for VLAN isolation of the security network and non-security network. Simultaneously, the DCS and related equipment adopt targeted information security protection measures, the ISCS is equipped with an industrial firewall, and the DCS meets the relevant information security protection requirements for urban rail signaling equipment.

[0082] Specifically, the platform local control panel includes a PSL controller, the integrated backup panel includes an IBP controller, and the fully electronic control box includes an ECB controller, such as... Figure 3 The ECB controller, PSL controller, and IBP controller all adopt a unified "core processing module + interface expansion module" design. Each of these controllers includes the same core processing module and different interface expansion modules, with the core processing module plugged into the interface expansion modules. The core processing module uses a SIL4-level 2oo2 architecture security platform (VCU-P), while the interface expansion modules employ different hardware and driver port designs based on their respective functional requirements. This design, using the same core processing module and different interface expansion modules, further reduces R&D and production costs and simplifies system architecture and hardware / software complexity.

[0083] like Figure 3The VCU-P safety platform adopts a dual-microcontroller architecture. Its hardware circuit design follows the SIL4 functional safety requirements of EN50129, employing a dual-channel heterogeneous 2oo2 design. The CPU has an embedded CAN port supporting the CAN2.0B protocol and a built-in Ethernet controller (10M / 100M). The platform features safety designs such as a safety clock, watchdog timer, power-on self-test / in-circuit self-test, and dual-channel 2oo2 voting. Simultaneously, the VCU-P safety platform software includes the FSFB2 / RSSP-I secure communication protocol and a CAN2.0B protocol communication processing module with added security layer logic processing.

[0084] Specifically, such as Figure 4 The diagram shows the architecture and interface expansion module of the ECB controller. The core processing module is plugged into the interface expansion module of the ECB controller. It acquires various input information through external I / O ports, processes it, and then outputs it to the outside world through the interface expansion module. The ECB controller acquires the closing and locking status of each intelligent door control unit through a hard-wired acquisition port to ensure the safety of the relevant status; it receives door opening and closing information and alignment isolation information from the vehicle control through a security network port, and sends closing and locking signals to the vehicle control and computer interlocking system. It acquires safety operation commands such as "operation permission / door opening / door closing / interlock release command" as well as various non-safety maintenance information and status information from iDCU / PSL / IBP through the CAN bus port, and sends alignment isolation messages to the intelligent door control units. It also issues door opening and closing commands to the intelligent door control units through the redundant CAN bus (when receiving door opening and closing commands from different sources, the execution order is IBP>PSL>CC priority control). The system sends maintenance and status messages of the iDCU / PSL / IBP and ECB itself to the PMM via a non-secure network port, and simultaneously receives parameter modification and remote upgrade instructions for the intelligent gate control unit from the PMM.

[0085] Specifically, such as Figure 5The diagram shows the architecture and interface expansion module of the PSL controller. The PSL controller uses the same VCU-P safety platform as the ECB controller, while the interface expansion module defines different drive and acquisition ports according to the specific needs of the platform's local control panel. The PSL controller acquires the status of the operation permission button / door opening button / door closing button / interlock release button through the hard-wired acquisition port, and then forwards the relevant status to the fully electronic control box via a redundant CAN bus. It also forwards maintenance and status messages from the platform's local control panel to the fully electronic control box via the CAN bus port. The PSL controller performs various indicator light activation operations through the non-safety drive and acquisition ports of the interface expansion module and a hard-wired connection, while also acquiring test light button data via hard-wired acquisition. This PSL controller design replaces the existing purely hard-wired operation panel. The PSL controller has I / O drive and acquisition capabilities, enabling local drive and acquisition and information exchange with other platform door devices via the CAN bus. It eliminates the original hard-wired interface, saving significant cabling, reducing construction workload, and simplifying fault finding.

[0086] Specifically, such as Figure 5 When a platform screen door malfunctions and the signaling system cannot receive the door locking signal, preventing train departure, a backup degraded mode is required to ensure train operation is not affected by the malfunction. To implement this interlock release function, an interlock release button is installed on the platform's local control panel, connected via hardwire to the PSL controller. The PSL controller collects the button's status and transmits it to the fully electronic control box via a redundant CAN bus. The fully electronic control box then forwards this information to the signaling system via network communication. In the event of a platform screen door malfunction, to allow train departure, under safe manual operation of the interlock release button, the signaling system receives a signal that all platform screen doors are closed and locked, allowing train departure.

[0087] Specifically, such as Figure 6The diagram shows the architecture and interface expansion modules of the IBP controller. The core processing module of the IBP controller uses the same VCU-P safety platform as the fully electronic control box. The interface expansion modules are defined with different drive and acquisition ports according to the specific needs of the integrated backup panel. The IBP controller acquires the status of the operation permission buttons / open / close buttons through the hard-wired acquisition port, and then forwards the relevant status to the fully electronic control box via the CAN bus port. It also forwards maintenance information and status messages from the integrated backup panel to the fully electronic control box via the CAN bus port. The IBP controller performs the lighting operation of various indicator lights on the panel through a non-safety drive and acquisition port and a hard-wired connection, while also acquiring the test light buttons on the panel via hard-wired acquisition. This IBP controller design replaces the existing purely hard-wired operation panel. The IBP controller has I / O drive and acquisition functions, enabling local drive and acquisition, and information exchange with other equipment on the platform screen door via the CAN bus. It eliminates the original hard-wired interface, saving a significant amount of cabling, reducing construction workload, and simplifying fault finding.

[0088] Specifically, such as Figure 7 As shown, the intelligent door control unit includes a microcontroller CPU, a motor drive module, a power supply module, and I / O acquisition ports and a CAN bus port. The microcontroller CPU supports the CAN bus and can supply power to necessary modules within the intelligent door control unit via the port power supply module. The I / O acquisition module of the intelligent door control unit has local I / O driving and acquisition functions. It can acquire door opening and closing commands from the local control box and manual unlocking, as well as the status of buttons, door position limit switches, etc., and can drive the status adjustment of local door indicator lights, buzzers, etc., to provide prompts to the operator. Based on the received open / close commands, the drive module of the intelligent door control unit can drive the motor to move the door, realizing the corresponding open / close action. The CAN bus interface of the intelligent door control unit can receive open / close control commands from the fully electronic control box via a redundant CAN bus. In the absence of local door opening / closing commands (LCB and manual unlocking), it directly executes the door opening and closing operation according to the door opening and closing control commands sent by the fully electronic control box. If a local door opening / closing command is received, the door opening / closing operation will be executed in the priority order of "manual unlock > LCB > ECB". In addition, the intelligent door control unit also sends the status and fault information of the intelligent door control unit and the motor curve information to the fully electronic control box via the CAN bus, which is then forwarded to the PMM by the fully electronic control box.

[0089] Specifically, priority control is a crucial function of the platform screen door control system provided in this embodiment, and it should ensure the priority logic of "manual operation > LCB control > IBP control > PSL control > CC control". In the original control scheme, a priority circuit built using relays was required to achieve gate control. This system eliminates circuit gate control, such as... Figure 10As shown, priority control is implemented in two levels. First, at the overall door opening / closing level, the fully electronic control box uniformly receives overall door opening / closing control commands from the vehicle controller, IBP controller, and PSL controller. Upon receiving a command from any one of the IBP controller, PSL controller, or system-level (from the vehicle CC), the fully electronic control box will send an overall door opening / closing control command to the intelligent door control unit via the CAN bus. When receiving three or two types of commands simultaneously, the fully electronic control box will send the processed door opening / closing command to the intelligent door control unit according to the priority order: IBP > PSL > CC.

[0090] like Figure 10 Each intelligent door control unit, upon receiving the open / close command from the fully electronic control box, also receives and responds to manual and LCB (Local Control Block) open / close commands via hardwire at the single-door control level. Upon receiving any command from the fully electronic control box, manual operation, or LCB operation, the intelligent door control unit will instruct the door it controls to perform the corresponding action. If an intelligent door control unit receives two or three operation commands simultaneously, it will execute the open / close operation according to the priority order of "manual > LCB > ECB". For example, during the process of issuing a full-side door opening / closing command from the fully electronic control box, if a platform door corresponding to a certain intelligent door control unit malfunctions, the local control box (LCB) corresponding to the malfunctioning door can perform a local open / close operation, isolating the door operator system of the malfunctioning door from the door operator systems of other doors on the same side. In this case, the intelligent door control unit prioritizes the LCB operation, does not respond to the open / close command from the fully electronic control box, and does not affect the normal operation of other doors.

[0091] The digital platform screen door control system provided in this embodiment can flexibly adapt to various needs. For example, for requirements such as opening doors according to different train formations or opening the first and last doors in case of fire, existing control schemes require separate cabling for the relevant platform screen doors according to different requirements. The central interface panel (PSC), local operation panel, and emergency operation panel also need to be equipped with hard-wired interfaces. Once the connection is completed, it is difficult to temporarily change the train formation. However, this system eliminates indoor and outdoor control cables. When the all-electronic control box sends open / close commands to each intelligent door control unit, the identification range of the intelligent door control unit can be set in the CAN data frame. This allows control of the intelligent door control unit with the specified identification. The intelligent door control unit will only drive the controlled door to move when it determines that its identification is within the identification range of the received CAN bus message. This allows for highly flexible implementation of requirements such as opening doors according to different train formations or opening the first and last doors in case of fire.

[0092] The digital platform screen door control system provided in this embodiment can be used in platform screen door renovation projects to replace the original control scheme based on hard-wired circuits. That is, this system eliminates cables, indoor and outdoor hard-wired connections, and related circuits and interfaces for hard-wired drive / acquisition. Through the setting of a fully electronic control box, this system eliminates the central interface panel, the relay group that originally processed hard-wired commands related to the central interface panel, and the interfaces for communication with the train signaling system, door control unit, local operation panel, and emergency operation panel. All these modules are replaced by a fully electronic control box installed at the door head, which completes digital communication via a CAN bus.

[0093] In summary, this embodiment proposes a digital platform screen door control system. Compared with the traditional platform screen door control system based on hard-wired circuits, the system of this invention has improvements in cost, compatibility, maintenance, and efficiency. It can effectively reduce the difficulty of platform screen door renovation and construction, shorten the construction period, and improve the flexibility, safety, and reliability of the platform screen door control system, which is of great significance to the platform screen door industry.

[0094] Based on the same inventive concept, this embodiment also provides a method for controlling the opening of a digital platform screen door, such as... Figure 8 As shown, it includes the following steps:

[0095] A1. Once the train has come to a complete stop, the onboard controller issues a door-opening command and transmits it to the fully electronic control box via the network.

[0096] A2. After receiving the door opening command, the all-electronic control box sends the door opening command to all the intelligent door control units it manages via the CAN bus, and the door opening command includes the door opening time.

[0097] A3. After each intelligent door control unit receives the door opening command that matches its identifier via the CAN bus, it drives the door it controls to perform the door opening action at the time specified by the door opening time.

[0098] Based on the same inventive concept, this embodiment also provides a method for controlling the closing of a digital platform screen door, such as... Figure 9 As shown, it includes the following steps:

[0099] B1. The vehicle controller issues a door closing command and transmits it to the fully electronic control box via the network.

[0100] B2. The all-electronic control box receives the door closing command and sends the door closing command to all the intelligent door control units it manages via the CAN bus, and the door closing command includes the door closing time.

[0101] B3. After receiving the closing command via the CAN bus, each intelligent door control unit drives the door it controls to perform the closing action at the time specified by the closing time, and collects the closing and locking status via hard wire, and then transmits it to the fully electronic control box via hard wire.

[0102] B4. After receiving the closed and locked status sent by each of the intelligent door control units, the all-electronic control box performs a logical AND operation to ensure that all the intelligent door control units corresponding to the platform doors it manages have sent the signal. That is, after ensuring that all platform doors are closed and locked, it sends a closed and locked signal indicating that all platform doors are closed and locked to the vehicle controller and computer interlocking system via the network.

[0103] B5. After receiving the closing and locking signals from all platform doors, the onboard controller controls the train to leave the platform; upon receiving this signal, the computer interlocking system illuminates the departure signal, allowing the train to leave the station.

[0104] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A digital platform screen door control system, characterized in that, include: The station's local control panel, integrated backup panel, fully electronic control box, and multiple intelligent gate control units are interconnected via CAN bus. The platform local control panel is deployed in the station hall and is used to send door opening and closing commands to the fully electronic control box via CAN bus; The integrated rear cargo box is deployed in the vehicle control room and is used to send door opening and closing commands to the fully electronic control box via the CAN bus; The fully electronic control box is deployed in the station hall and communicates with the vehicle controller via a network. The vehicle controller transmits door opening and closing commands to the fully electronic control box via the network. The fully electronic control box is configured to determine the final door opening and closing command according to the control priority order of the integrated backup panel being higher than the platform local control panel, and the platform local control panel being higher than the vehicle controller, and broadcasts the command to all the intelligent door control units via the CAN bus. Multiple intelligent door control units are configured one-to-one with platform doors. Each intelligent door control unit responds to the door opening and closing commands sent by the fully electronic control box and controls the corresponding platform door to perform the door opening and closing actions.

2. The digital platform door control system as described in claim 1, characterized in that, The fully electronic control box is connected to all the intelligent door control units via hard wires. The intelligent door control units collect the closing and locking status of the corresponding platform doors via hard wires and transmit the data to the fully electronic control box via hard wires. The fully electronic control box is configured to generate a closing and locking signal based on the closing and locking status of each platform door, and transmit it to the vehicle controller and computer interlocking system via a network.

3. The digital platform door control system as described in claim 1, characterized in that, Also includes: A maintenance monitoring terminal is deployed in the vehicle control room, and the maintenance monitoring terminal is connected to the all-electronic control box via network communication. The all-electronic control box receives parameter modification and / or remote upgrade commands for the intelligent gate control unit sent by the maintenance monitoring terminal via the network, and forwards them to all the intelligent gate control units via the CAN bus; The all-electronic control box receives maintenance and status information from the intelligent gate control unit, the platform local control panel, and the integrated backup panel via the CAN bus, and sends the maintenance and status information of the intelligent gate control unit, the platform local control panel, the integrated backup panel, and itself to the maintenance monitoring terminal via the network.

4. The digital platform door control system as described in claim 1, characterized in that, The intelligent door control unit is also configured to respond to manual operation and local single-door opening and closing control operations of the local control box via a hard-wired interface. The control priority of manual operation and local control box is higher than the door opening and closing commands of the integrated backup panel, the platform local control panel and the vehicle controller, and the control priority of manual operation is higher than the control priority of local control box.

5. The digital platform door control system as described in claim 1, characterized in that, The all-electronic control box is also configured to interact with the vehicle controller via a network to exchange alignment and isolation information, and transmit the information to the corresponding intelligent gate control unit via a CAN bus.

6. The digital platform door control system as described in claim 1, characterized in that, The platform local control panel includes a PSL controller, the integrated backup panel includes an IBP controller, and the all-electronic control box includes an ECB controller. The ECB controller, the PSL controller, and the IBP controller all include the same core processing module and different interface expansion modules, with the core processing module plugged into the interface expansion module. The core processing module adopts a security platform with SIL4 level 2oo2 architecture.

7. The digital platform door control system as described in claim 6, characterized in that, The interface expansion module of the ECB controller includes: The hard-wire acquisition port is connected to the intelligent door control unit via a hard wire and is used to receive the closing and locking status of the platform door acquired by the intelligent door control unit. A secure network port is used to receive door opening and closing commands and alignment isolation information transmitted by the vehicle controller, as well as to send closing and locking signals to the vehicle controller and the computer interlocking system. The CAN bus port is used to send parameter modification, remote upgrade commands, and final door opening and closing commands to all the intelligent door control units, to receive maintenance and status information from the intelligent door control units, the platform local control panel, and the integrated backup panel, and to send alignment and isolation information to the corresponding intelligent door control unit. The non-secure network port is used to send maintenance and status information of the intelligent gate control unit, the platform local control panel, the integrated backup panel, and the all-electronic control box, and to receive parameter modification and remote upgrade commands from the intelligent gate control unit.

8. The digital platform door control system as described in claim 6, characterized in that, The interface expansion module of the PSL controller includes: The hard-wired acquisition port connects to the operation enable button, switch button, door close button, and interlock release button via hard-wired connection. The non-safety drive port is connected to multiple indicator lights via hard wiring; The CAN bus port is connected to the fully electronic control box via the CAN bus.

9. The digital platform door control system as described in claim 6, characterized in that, The interface expansion module of the IBP controller includes: The hard-wired data acquisition port is connected via hard-wired operation enable button, door open button, and door close button; The non-safety drive port is connected to multiple indicator lights via hard wiring; The CAN bus port is connected to the fully electronic control box via the CAN bus.

10. The digital platform screen door control system as described in claim 1, characterized in that, The number of platform local control panels is 1 to 3. A single platform local control panel can control all the intelligent gate control units on the same side. Only one platform local control panel is allowed to perform control operations at any given time.

11. A method for controlling the opening of a digital platform screen door, implemented using the digital platform screen door control system as described in any one of claims 1-10, characterized in that, include: Once the train has come to a complete stop, the on-board controller issues a door-opening command and transmits it to the fully electronic control box via the network. After receiving the door opening command, the all-electronic control box sends the door opening command to all the intelligent door control units via the CAN bus, and the door opening command includes the door opening time. After receiving an opening command that matches its own identifier via the CAN bus, the intelligent door control unit controls its corresponding platform door to perform the opening action at the time specified by the opening time.

12. A method for controlling the closing of a digital platform screen door, implemented using the digital platform screen door control system as described in any one of claims 1-10, characterized in that, include: The vehicle controller issues a door closing command and transmits it to the fully electronic control box via the network; After receiving the door closing message, the all-electronic control box sends a door closing command to all the intelligent door control units via the CAN bus, and the door closing command includes the closing time. After receiving the closing command via the CAN bus, the intelligent door control unit controls the corresponding platform door to perform the closing action at the time specified by the closing time, and collects the closing and locking status of the corresponding platform door via hard wire and transmits it to the fully electronic control box via hard wire. The fully electronic control box receives the closing and locking status sent by the intelligent door control unit. After confirming that it has received the closing and locking status sent by the intelligent door control unit corresponding to all platform doors, it sends a closing and locking signal indicating that all platform doors are closed and locked to the vehicle controller and computer interlocking system via the network. After receiving the locking signal, the on-board controller controls the train to leave the platform. After receiving the locking signal, the computer interlocking system illuminates the departure signal to allow the train to leave the station.

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