Platform door control device

Abstract

The utility model discloses a platform door control device which comprises a first DCU, a second DCU, a change-over switch assembly and a platform door driving mechanism, the first DCU is used for monitoring the health state of the first DCU and platform door state information, and the health state of the first DCU comprises fault information; the second DCU is used for monitoring own health state and platform door state information, and is connected with the first DCU to exchange the platform door state information and own health state; the platform door driving mechanism is connected with the first DCU and the second DCU through the change-over switch assembly and used for driving the platform door to be opened and closed according to control instructions from the first DCU and the second DCU. The change-over switch assembly is used for cutting off the connection between the first DCU / second DCU and a platform door driving mechanism when the first DCU / second DCU breaks down and correspondingly switching to the second DCU / first DCU to work.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit control, and more specifically to a platform door control device. Background Art

[0002] With the rapid development of urban scale, the demand for urban rail transit has increased rapidly, greatly facilitating people's travel. In the existing subway line network, for the safety of passengers waiting for the train, platform doors are set along the edge of the subway platform to isolate the train from the subway platform waiting area. At present, each platform door in the subway platform door system is equipped with a DCU (Door Control Unit) to control the opening, closing, and communication of the platform door. Due to the relatively complex situation on the subway site and the high requirements for safety and time in subway operation, if the DCU fails, the platform door cannot be controlled, and the platform door cannot be opened / closed, affecting passengers getting on and off the train, thereby affecting train operations and causing adverse effects. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a platform door control device which can ensure the reliable operation of the platform door system.

[0004] In order to solve the above technical problems, the utility model provides a platform door control device, including a first DCU, a second DCU, a switching switch assembly and a platform door driving mechanism, wherein:

[0005] The first DCU is used to monitor its own health status and platform door status information, wherein the own health status includes fault information;

[0006] The second DCU is used to monitor its own health status and platform door status information, and connect with the first DCU to exchange platform door status information and their own health status;

[0007] The platform door driving mechanism is connected to the first DCU and the second DCU through the switching switch assembly, and is used to drive the platform door to open and close according to control instructions from the first DCU and the second DCU;

[0008] The switching switch assembly is used to cut off the connection between the first DCU / second DCU and the platform door driving mechanism when the first DCU / second DCU fails, and switch to the second DCU / first DCU to work accordingly.

[0009] A further technical solution is: the platform door control device also includes an in-place sensor for detecting whether the platform door is opened and closed in place, and the in-place sensor is connected to the first DCU and the second DCU.

[0010] A further technical solution is: the in-place sensor includes an in-place switch arranged on the platform door and / or an electromagnetic lock in-place switch arranged on the electromagnetic lock.

[0011] A further technical solution is as follows: the switching switch assembly includes two relays, and the first DCU and the second DCU are respectively connected to the two relays.

[0012] A further technical solution is: the first DCU and the second DCU are connected via a communication bus and / or hard wire.

[0013] Compared with the prior art, the platform door control device of the utility model is provided with two DCUs, a first DCU and a second DCU, and is also provided with a switching switch assembly. The two DCUs are connected to the platform door drive mechanism through the switching switch assembly, and only one DCU is valid at the same time. When the working DCU fails, the connection between the DCU and the platform door drive mechanism can be cut off by the switching switch assembly, and the other DCU can be switched to work, so as to cooperate with the platform door drive mechanism to realize the opening and closing of the platform door. It can be seen that the platform door control device of the utility model is configured with redundant DCUs, and the first DCU and the second DCU are backed up for each other. When one DCU fails, it can be switched to the other backup DCU to realize the control functions such as opening and closing of the platform door, thereby improving the reliability of the system to ensure the reliable operation of the platform door system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural block diagram of a specific embodiment of the platform door control device of the utility model.

[0015] Figure 2 It is a flow chart of a specific embodiment of the platform door control method of the utility model. DETAILED DESCRIPTION

[0016] In order to enable ordinary technicians in the field to more clearly understand the purpose, technical solutions and advantages of the utility model, the utility model is further explained below in conjunction with the accompanying drawings and embodiments.

[0017] Reference Figure 1 , Figure 1It is a schematic structural block diagram of a specific embodiment of the platform door control device 100 of the utility model. In the embodiment shown in the accompanying drawings, the platform door control device 100 includes a first DCU 10, a second DCU 20, a switching switch assembly 30 and a platform door driving mechanism 40. In this embodiment, the platform door driving mechanism 40 includes a motor 41 and an electromagnet 42, etc., wherein the first DCU 10 is used to monitor its own health status and platform door status information, wherein the own health status includes fault information; the second DCU 20 is used to monitor its own health status and platform door status information, and is connected to the first DCU 10 to exchange platform door status information and their own health status; the platform door driving mechanism 40 is connected to the first DCU 10 and the second DCU 20 through the switching switch assembly 30, and is used to drive the platform door to open and close according to the control instructions from the first DCU 10 and the second DCU 20; the switching switch assembly 30 is used to shut down the first DCU 10 / second DCU 20 when the first DCU 10 / second DCU 20 fails. 20 is connected to the platform door driving mechanism 40, and the second DCU 20 / first DCU 10 is switched to work accordingly. Based on the above design, the platform door control device 100 of the utility model is equipped with a redundant DCU. When in use, only one DCU is effective at the same time. The first DCU 10 and the second DCU 20 are backups for each other. When the working DCU fails, the connection between the DCU and the platform door driving mechanism 40 can be cut off by switching the switch assembly 30, and the other DCU can be switched to work, so as to cooperate with the platform door driving mechanism 40 to realize the opening and closing of the platform door, and ensure the reliable operation of the platform door system.

[0018] In some embodiments, the first DCU 10 and the second DCU 20 are connected via a communication bus and / or hard wire. It is understandable that when the first DCU 10 / second DCU 20 fails, the platform drive mechanism and platform door status information are correspondingly updated to the second DCU 20 / first DCU 10 via hard wire or communication bus (e.g., RS485). Preferably, during the data and signal transmission process, the communication bus has a higher communication priority than the hard wire.

[0019] In some embodiments, the platform door control device 100 may further include an in-place sensor for detecting whether the platform door is fully opened or closed. The in-place sensor is connected to the first DCU 10 and the second DCU 20. Specifically, the in-place sensor includes an in-place switch provided on the platform door and / or an electromagnetic lock in-place switch provided on the electromagnetic lock. Based on the above design, the in-place switch or the electromagnetic lock in-place switch can be used to detect whether the platform door is fully opened or closed. If the platform door is not fully opened or closed within a preset time, the corresponding working DCU fails and another DCU is switched to work.

[0020] Preferably, in this embodiment, the switching switch assembly 30 includes two relays, namely a first relay 31 and a second relay 32, and the first DCU 10 and the second DCU 20 are respectively connected to the first relay 31 and the second relay 32 to control the connection between the first DCU 10 and the second DCU 20 and the platform door driving mechanism 40 through the relay.

[0021] As can be seen from the above, the platform door control device 100 of the utility model is provided with two DCUs, a first DCU 10 and a second DCU 20. Only one DCU is working at the same time, and the other DCU is used as a backup, that is, after power-on, both DCUs are in a healthy state under normal circumstances, that is, both can work normally. Any one of the first DCU 10 and the second DCU 20 is used as the main DCU, and the platform door driving mechanism 40 is controlled by the switching switch component 30. The other DCU is used as a backup DCU. When the main DCU fails, the connection between the DCU and the platform door driving mechanism 40 is cut off by the switching switch component 30, and the backup DCU is switched to work. At the same time, the failed DCU updates the platform door status information to the backup DCU, so that the backup DCU controls the closing of the platform door. At this time, the backup DCU is transformed into the main DCU, and the failed DCU is used as the backup DCU of the main DCU. The two DCUs back up each other to ensure the reliable operation of the platform door system.

[0022] Reference Figure 2 , Figure 2 This is a flow chart of a specific embodiment of the platform door control method of the utility model. Figure 2 As shown, the platform door control method includes:

[0023] S101. The first DCU and the second DCU monitor platform door status information in real time, and set one of the first DCU and the second DCU as a main DCU and the other DCU as a backup DCU of the main DCU.

[0024] In this step, the platform door status information includes whether the platform door is in an open state or a closed state. Understandably, initially, the first DCU can be the main DCU and the second DCU can be the backup DCU; or the second DCU can be the main DCU and the first DCU can be the backup DCU.

[0025] S102: The primary DCU monitors its own health status in real time, and the backup DCU monitors its own health status in real time.

[0026] In this step, the self-health status includes fault information. The real-time monitoring of the self-health status of the main DCU specifically includes: the arrival switch on the platform door detects whether the platform door is fully opened or fully closed. If it is not fully opened or fully closed within a preset time, it is determined that the main DCU has a fault; or the electromagnetic lock arrival switch on the electromagnetic lock detects whether the electromagnetic lock is opened or locked. If it is not opened or locked within a preset time, it is determined that the main DCU has a fault.

[0027] In the present invention, the backup DCU monitors the health status of the main DCU in real time. Specifically, when the main DCU fails, the main DCU will clear its health signal. At this time, the backup DCU monitors that the health signal of the main DCU is cleared, and then determines that the main DCU fails at this time, and the backup DCU works to control the opening and closing of the platform door.

[0028] S103: When the main DCU does not fail, a control instruction is output according to an external input command and sent to the platform door driving mechanism through a switching switch assembly, so that the platform door driving mechanism drives the platform door to close.

[0029] In the train operation system, when the detection sensor detects that the train has arrived at the station, it will send a command to the main DCU to control the opening and closing of the door. That is, the main DCU can control the opening and closing of the platform door according to the external input command from the external detection sensor.

[0030] In this step, the platform door driving mechanism includes a motor and an electromagnet that drive the platform door to open or close, and the switching switch assembly includes two relays, and the first DCU and the second DCU are respectively connected to the two relays to be connected to the platform door driving mechanism through the relays.

[0031] It can be understood that, initially, the relay connected to the main DCU and the platform door drive mechanism is in the normally closed state, the relay connected to the backup DCU and the platform door drive mechanism is in the normally open state, and the connection between the backup DCU and the platform door drive mechanism is disconnected. When the main DCU fails, the relay connected to it is switched to the normally open state, cutting off the connection between it and the platform door drive mechanism, while the backup DCU works, and the relay connected to the backup DCU and the platform door drive mechanism is switched to the normally closed state.

[0032] S104. When the main DCU fails, the switching switch assembly cuts off the connection between the main DCU and the platform door drive mechanism, and the switching switch assembly operates to connect the backup DCU to the platform door drive mechanism. The backup DCU receives external input commands and platform door status information from the main DCU and updates them. At this time, the backup DCU is changed to the main DCU, and the failed DCU is changed to the backup DCU of the DCU. The above steps S102 to S104 are repeated.

[0033] In this step, when the main DCU fails, its backup DCU replaces it as the main DCU to control the platform door. At this time, the failed DCU becomes the backup DCU, and the above monitoring and control steps are repeated to stably and reliably perform functions such as opening and closing the platform door. That is, if the first DCU is the main DCU, the second DCU is the backup DCU, and when the first DCU fails, the second DCU works. At this time, the second DCU replaces the first DCU as the main DCU to control the platform door. The first DCU becomes the backup DCU of the second DCU as a backup, and can replace the second DCU as the main DCU to work when the second DCU fails.

[0034] In summary, the utility model is provided with two DCUs, a first DCU and a second DCU. The first DCU and the second DCU back up each other, and only one DCU works at the same time, that is, a redundant DCU is configured. When one DCU fails and cannot work normally, it can switch to another backup DCU to realize control functions such as opening and closing of the platform door, thereby improving the reliability of the system and ensuring the reliable operation of the platform door system.

[0035] The above description is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of the utility model.

Claims

1. A platform door control device, characterized in that: The platform door control device includes a first DCU, a second DCU, a switching switch assembly and a platform door driving mechanism, wherein: The first DCU is used to monitor its own health status and platform door status information, wherein the own health status includes fault information; The second DCU is used to monitor its own health status and platform door status information, and connect with the first DCU to exchange platform door status information and their own health status; The platform door driving mechanism is connected to the first DCU and the second DCU through the switching switch assembly, and is used to drive the platform door to open and close according to control instructions from the first DCU and the second DCU; The switching switch assembly is used to cut off the connection between the first DCU / second DCU and the platform door driving mechanism when the first DCU / second DCU fails, and switch to the second DCU / first DCU to work accordingly.

2. The platform door control device according to claim 1, characterized in that: The platform door control device also includes an in-place sensor for detecting whether the platform door is fully opened or closed, and the in-place sensor is connected to the first DCU and the second DCU.

3. The platform door control device according to claim 2, characterized in that: The in-place sensor includes an in-place switch arranged on the platform door and / or an electromagnetic lock in-place switch arranged on the electromagnetic lock.

4. The platform door control device according to claim 1, characterized in that: The switching switch assembly includes two relays, and the first DCU and the second DCU are respectively connected to the two relays.

5. The platform door control device according to claim 1, characterized in that: The first DCU and the second DCU are connected via a communication bus and / or hard wire.

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