Control and communication device of subway platform door system

Abstract

The invention belongs to the technical field of rail transit, and provides a control and communication device of a subway platform door system, which comprises four controllers and switches in communication connection with the controllers to form a ring network, the device is configured with a control command and a communication command, and the control command indicates that the controller executes a command of the signal system to send a door opening and closing command to the platform door control device and determines a fault existing in the controller according to a feedback signal of the door opening and closing command; the communication command indicates that the controller shares data information acquired by the controller through the switch, and the data information at least comprises communication data. The system has the advantages that the four controllers form a ring network through the switch, so that each controller records and marks directly acquired communication data, and the marked communication data is shared to other controllers through the switch, so that the functions of mutual diagnosis and communication information interaction of uplink and downlink control boards are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to a control and communication device for a subway platform door system. Background Art

[0002] With the development of Chinese cities, more and more cities have a demand for rail transit. Rail transit has developed rapidly in China, and the number of subway platform doors has also increased rapidly.

[0003] The train platform door system includes a logic control unit PEDC (platform electrical door controller), an integrated supervision and control system ISCS (Integrated Supervision and Control System), a door control unit DCU (door control unit) and a signaling system SIG (signaling system). Among them, the logic control unit PEDC is set in the main control cabinet in the platform door equipment room, and is a device for monitoring the operation of the platform door. The door controller DCU is a device for controlling a single door on site, and the signaling system SIG is a system for monitoring the operation of the train and the opening and closing of the platform doors. The integrated supervision system ISCS is a highly integrated comprehensive automation monitoring system. By integrating and interconnecting various weak current systems and major electromechanical equipment of rail transit, a unified monitoring layer hardware platform and software platform are formed, thereby realizing the centralized monitoring and management functions of rail transit weak current systems, power, and electromechanical equipment.

[0004] The invention patent with application number CN201910640092.2 discloses "a signal and platform door interface and working method based on unmanned driving requirements" which solves the technical problems of signal control of platform doors, monitoring of relevant status information, and alignment and isolation functions of train doors and platform doors in the unmanned driving system mode. However, the patent has the following deficiencies: (1) It does not involve the monitoring of the subsystems of the platform door; (2) It does not involve the communication interface between the platform door and the ISCS; (3) It does not involve the problem of how the communication data flows in the event of a failure in the monitoring host computer. Summary of the invention

[0005] The object of the present invention is to provide a control and communication device for a subway platform door system to solve the above-mentioned problem.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A control and communication device for a subway platform door system, comprising: four controllers and switches respectively connected to the controllers for communication to form a ring network;

[0008] The device is configured with control commands and communication commands. The control commands are represented by executing the commands of the signal system through the controller to send door opening and closing commands to the platform door control device, and feedback signals based on the door opening and closing commands to determine the fault of the controller;

[0009] The communication command indicates that the controllers share the data information obtained by each controller through the switch, and the data information at least includes the communication data.

[0010] Furthermore, the four controllers are divided into two groups, and the two groups of controllers are used for command processing of the up platform door and the down platform door respectively;

[0011] Each group includes two controllers, and the two controllers in the group are marked as a main controller and a standby controller respectively; when it is determined that the main controller has a fault, the communication data obtained by the standby controller is circulated.

[0012] Furthermore, the controller marks the communication data acquired by itself, and the marked communication data is transferred to other controllers through the switch, and the communication data transferred by each controller is different.

[0013] Furthermore, the controller is configured to obtain corresponding communication data after determining a valid communication interface according to its location when executing a communication command.

[0014] Furthermore, the content of the marked communication data at least includes: real-time data of the device, the location of the device, the communication status of the device, and the master-slave information.

[0015] Furthermore, after any controller obtains the communication data transmitted by other controllers, the communication data is processed to filter out valid data therein.

[0016] Furthermore, the steps of filtering out valid data include:

[0017] Cache the real-time data of the device, the master / slave information and the communication status of the device in the communication data obtained by the flow;

[0018] According to the device communication status, it is determined whether the communication between the controllers is normal. If not, the data cache is modified to mark the device associated with the controller as a communication failure;

[0019] If yes, determine whether the communication status of the master controller or the standby controller is normal according to the master-standby information;

[0020] The real-time data of the device corresponding to the controller in normal communication state is written into the valid data buffer as valid data.

[0021] Furthermore, the controller is configured to, after receiving a query instruction from the integrated monitoring system, use the valid data of each device stored in the valid data buffer area as a data source to feed back to the integrated monitoring system.

[0022] Furthermore, the specific steps of sending the door opening and closing command to the platform door control device include:

[0023] Obtain the door opening and closing signals input by the signal system, and filter the door opening and closing signals;

[0024] An enable signal, or an enable signal and a door opening signal are output according to the signal status after filtering; when an enable signal and a door opening signal are output, it indicates that a door opening command is sent to the platform door control device; outputting only an enable signal indicates that a door closing command is sent to the platform door control device.

[0025] Furthermore, the step of determining whether the controller has a fault based on the feedback signal of the door opening and closing command includes: using the output state of the door opening and enabling relay in the platform door control device as the feedback signal, and comparing the feedback signal with the output state of the controller. When the time of inconsistent state exceeds a threshold, it is determined that the controller has a fault.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] (1) The four controllers form a ring network through switches and simultaneously communicate with the signal system SIG and the integrated monitoring system ISCS, thereby improving the reliability of communication on the platform door system;

[0028] (2) The four controllers are divided into two groups. The two groups of controllers are used for command processing of the up platform door and the down platform door respectively. At the same time, the two controllers in the group are marked as the main controller and the backup controller respectively. When it is determined that the main controller has a fault, the communication data obtained by the backup controller is transferred to avoid affecting the control function and communication function of the platform door system after a single device fails;

[0029] (3) Each controller records the communication data directly obtained and marks the communication data of each device according to the location of the controller. The marked communication data is shared with other controllers through a switch, and the communication data shared by each control board is different, thereby realizing the functions of mutual diagnosis and communication information exchange between the upstream and downstream control boards, avoiding the problem that the data corresponding to the control board cannot be collected due to a control board failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a ring network framework diagram formed by the controller and the switch in the embodiment provided by the present invention;

[0032] Figure 2 is a flow chart of realizing the opening and closing of the platform door in the embodiment provided by the present invention;

[0033] Figure 3 It is a flow chart of screening effective data in the embodiment provided by the present invention. DETAILED DESCRIPTION

[0034] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0038] This embodiment provides a control and communication device for a subway platform door system. The device is composed of four controllers and a switch. The controllers and the switches respectively connected to the controllers for communication form a ring network.

[0039] Each controller has 2 CAN interfaces, 2 MVB interfaces, 2 independent M12 interfaces, 24 input interfaces and 16 output interfaces. The four controllers are named upstream PEDC_A board, upstream PEDC_B board, downstream PEDC_A board and downstream PEDC_B board according to their functional differences. The PEDC interface planning is as follows: Figure 1 shown.

[0040] According to the above-mentioned structural configuration of the single controller, the following functions are realized: (1) receiving the hard-wired door opening and closing commands issued by the signal system SIG, and issuing door opening and closing instructions to the door control unit DCU; (2) realizing communication with the signal system SIG to exchange the platform door and car door alignment and isolation information; (3) realizing the CAN communication function between the controller and the door control unit DCU, obtaining the real-time faults and status of the door control unit DCU, and issuing alignment and isolation instructions to the door control unit DCU; (4) realizing the Ethernet communication function between the controller and the gap detection system, obtaining the real-time faults and status of the gap detection system; (5) realizing the Ethernet communication function between the controller and the power supply system, obtaining the real-time faults and status of the power supply system; (6) realizing the Ethernet communication function between the controller and the integrated monitoring system ISCS, and sending the real-time faults and status of each component of the platform door system to the integrated monitoring system ISCS; (7) realizing the Ethernet communication function between the controller and the train control room operation indicator panel PSA, and sending the real-time faults and status of each component of the platform door system to PSA; (8) realizing the internal Ethernet communication function between each controller to share real-time data.

[0041] The platform door control and communication interface device designed for smart subway is universal and scalable with high reliability, safety, availability and other requirements. It is divided into two categories according to functional attributes: control function and communication function. The control function is a safety function that runs independently and is not affected by the communication function. The four controllers run independently and do not affect each other. The communication function is a non-safety function, and the four controllers share real-time data. Among them, the control function includes: door opening and closing control function, fault diagnosis function; the communication function includes: internal communication function, data processing function, comprehensive monitoring communication function, signal system communication function, alignment isolation function, and PSA communication function.

[0042] Specifically, the controller is configured with a control command to execute the control function. The control command is represented by the controller executing the command of the signal system to send the door opening and closing command to the platform door control device and determine the fault of the controller according to the feedback signal of the door opening and closing command, that is, to realize the door opening and closing control function and fault diagnosis function.

[0043] In the door opening and closing control function, the controller controls the door control unit DCU according to the hard-line input signal of the signal system SIG to realize the opening and closing of the platform door. The specific process is as follows Figure 2 shown.

[0044] After obtaining the door opening and closing signals input by the signal system, it filters the door opening and closing signals, and then outputs an enable signal, or an enable signal and a door opening signal according to the signal status after filtering; when the enable signal and the door opening signal are output, it means sending an open door command to the platform door control device; outputting only the enable signal means sending a close door command to the platform door control device.

[0045] In the fault diagnosis function, the feedback signal output by the door opening and enabling relay is used to determine whether the controller is faulty. Specifically, the output state of the door opening and enabling relay in the platform door control device is used as the feedback signal, and the feedback signal is compared with the output state of the controller. When the state inconsistency time exceeds the threshold, it is determined that the controller is faulty.

[0046] The controller is configured with communication instructions to execute the communication function. In the internal communication function of the controller, the communication command is represented by the controllers sharing the data information obtained by each controller through the switch, and the data information at least includes the communication data.

[0047] Specifically, each controller records the communication data directly obtained, and marks the communication data of each device according to the location of the controller. The marking content includes: real-time data of the device, device location, device communication status, master and backup information, etc. The marked communication data is shared to other controllers through the switch, and the communication data shared by each control board is different.

[0048] During the marking process, each controller determines the effective communication interface based on its location information and calls it to obtain the corresponding communication data. The communication data is then marked and sent to other controllers. The output data of each controller is shown in the table below.

[0049]

[0050]

[0051] For each communication data output through the internal communication function, data processing needs to be performed again to filter out the valid data of each device.

[0052] like Figure 3 As shown, the steps of filtering out valid data include: caching the real-time data of the device, the master-slave information and the communication status of the device in the communication data obtained by circulation; judging whether the communication between the controllers is normal according to the communication status of the device, if not, modifying the data cache to mark the device associated with the controller as a communication failure; if so, judging whether the communication status of the main controller or the standby controller is normal according to the master-slave information; writing the real-time data of the device corresponding to the controller in the normal communication status as valid data into the valid data cache area.

[0053] In the integrated monitoring communication function, after receiving the query command of the integrated monitoring system, the valid data of each device stored in the valid data buffer area will be used as the data source to feed back to the integrated monitoring system, so that the valid data of each device will be summarized and fed back to the integrated monitoring system.

[0054] In the signal system communication function and the alignment isolation function, it is expressed as feeding back the door control unit DCU information that meets the alignment isolation conditions to the signal system and sending an alignment isolation instruction to the door control unit DCU based on the received signal system door isolation information.

[0055] The PSA communication function is represented by each controller sending the device data directly obtained by the controller to PSA. For each device, PSA will receive two sets of data. Under normal circumstances, PSA will display and record the device data (primary) and the primary and backup communication status. When the primary communication status of the device fails, the device data (backup) will be used for display. When both the primary and backup devices fail to communicate, no recording will be performed.

[0056] In this embodiment, the four controllers form a ring network through a switch and communicate with other systems in the subway station at the same time, thereby improving the reliability of the platform door system communication; at the same time, it avoids affecting the control function and communication function of the platform door system after a single device fails.

[0057] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A control and communication device for a subway platform door system, characterized in that: include: Four controllers and switches respectively connected to each controller for communication to form a ring network; The device is configured with control commands and communication commands. The control commands are represented by executing the commands of the signal system through the controller to send door opening and closing commands to the platform door control device, and feedback signals based on the door opening and closing commands to determine the faults of the controller. The communication command indicates that the controllers share the data information obtained by each controller through the switch, and the data information at least includes the communication data.

2. A control and communication device for a subway platform door system according to claim 1, characterized in that: The four controllers are divided into two groups, which are used for command processing of the up platform door and the down platform door respectively; Each group includes two controllers, and the two controllers in the group are marked as a main controller and a standby controller respectively; when it is determined that the main controller has a fault, the communication data obtained by the standby controller is circulated.

3. A control and communication device for a subway platform door system according to claim 1, characterized in that: The controller marks the communication data it obtains, and the marked communication data is transferred to other controllers through the switch. The communication data transferred by each controller is different.

4. A control and communication device for a subway platform door system according to claim 3, characterized in that: The controller is configured to obtain corresponding communication data after determining a valid communication interface according to its location when executing a communication command.

5. A control and communication device for a subway platform door system according to claim 3, characterized in that: The marked contents of the communication data include at least: real-time data of the device, the location of the device, the communication status of the device, and the master-slave information.

6. A control and communication device for a subway platform door system according to claim 5, characterized in that: After any controller obtains the communication data transmitted by other controllers, it processes the communication data to filter out the valid data.

7. A control and communication device for a subway platform door system according to claim 6, characterized in that: The steps to filter out valid data include: Cache the real-time data of the device, the master / slave information and the communication status of the device in the communication data obtained by the flow; According to the device communication status, it is determined whether the communication between the controllers is normal. If not, the data cache is modified to mark the device associated with the controller as a communication failure; If yes, determine whether the communication status of the master controller or the standby controller is normal according to the master-standby information; The real-time data of the device corresponding to the controller in normal communication state is written into the valid data buffer as valid data.

8. A control and communication device for a subway platform door system according to claim 6, characterized in that: The controller is configured to, after receiving a query instruction from the integrated monitoring system, use the valid data of each device stored in the valid data buffer area as a data source to feed back to the integrated monitoring system.

9. A control and communication device for a subway platform door system according to claim 1, characterized in that: The specific steps of sending door opening and closing instructions to the platform door control device include: Obtain the door opening and closing signals input by the signal system, and filter the door opening and closing signals; An enable signal, or an enable signal and a door opening signal are output according to the signal status after filtering. When an enable signal and a door opening signal are output, it indicates that a door opening command is sent to the platform door control device. When only an enable signal is output, it indicates that a door closing command is sent to the platform door control device.

10. A control and communication device for a subway platform door system according to claim 1, characterized in that: The steps of determining whether the controller is faulty based on the feedback signal of the door opening and closing command include: using the output state of the door opening and enabling relays in the platform door control device as the feedback signal, and comparing the feedback signal with the output state of the controller. When the time of inconsistent state exceeds a threshold, it is determined that the controller is faulty.

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