A platform door system emergency door and end door status detection device and method

Abstract

The present invention discloses a device for detecting the status of emergency doors and end doors of a platform door system, comprising an MCU, a power module, an address code, a door status indicator light control module, a voice prompt module, a travel switch status detection module, a travel switch status display module, a status feedback module and a communication module; the MCU periodically reads door body status information, the door body information including emergency door switch status information or end door switch status information, detects whether the door body switch status changes, and judges which state the door body is in; if the door body is in a closed state, the closed state of the emergency door or the end door is detected and judged; if the door body is in an open state, the open state of the emergency door or the end door is detected and judged, thereby reducing the problem that the emergency door and the end door in the platform door system may accidentally open due to improper emergency handling.

Description

Technical Field

[0001] The present invention belongs to the technical field of subway platform doors, and in particular relates to a device and method for detecting the status of emergency doors and end doors of a platform door system. Background Art

[0002] Platform door systems are installed at the edge of platforms at stations along urban rail transit lines, separating the platform waiting area from the track travel area. Similar to train doors, they are electromechanical systems. They isolate passengers from the tracks and trains, improving operational safety, enhancing the platform waiting environment, and saving operating and construction costs.

[0003] The end doors are set at both ends of the platform. They are the passenger evacuation passages in the event of a fire or failure in the section tunnel, and the passages for staff to enter and exit the public area of ​​the platform; the emergency doors are the passenger emergency evacuation passages. When there are abnormal operating conditions such as the train entering the station and unable to align with the sliding doors or other emergencies, the emergency doors can be used as passenger emergency evacuation passages. The emergency doors can be manually unlocked and opened to form boarding and alighting passages.

[0004] Emergency doors and end doors must be kept locked under normal operating conditions. Once a closing failure occurs and the equipment opens abnormally, passengers can directly enter non-public areas or even fall directly into the track area, which directly affects the safety of passengers on the platform.

[0005] In the existing technology, most of the equipment detects the status of emergency doors and end doors through travel switches, displays the open and close door status through door status indicators, and sends the status data to the PSC cabinet after analysis by the DCU. When using this method, the DCU and indicator light only detect one set of contacts of the travel switch, and it is impossible to determine whether the cause of the on-site fault is due to abnormal door body status or travel switch failure. All fault causes can only use one fault emergency handling process. Improper operation on site may cause the emergency door or end door to be blown open by the piston wind when the train enters and exits the station, which poses a certain safety risk. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a device and method for detecting the status of emergency doors and end doors of a platform door system.

[0007] The specific scheme of the present invention is as follows:

[0008] A platform door system emergency door and end door status detection device, including an MCU, a power module, an address code, a door status indicator light control module, a voice prompt module, a travel switch status detection module, a travel switch status display module, a status feedback module and a communication module;

[0009] The MCU detects at least two sets of contacts of the same travel switch, and reflects the status of the travel switch according to the different states of the two sets of contacts of the same travel switch when the emergency door and the end door are in motion, and determines the actual status of the emergency door and the end door at this time;

[0010] The power module is used to convert the DC110V driving power of the platform door system into the device operating voltage;

[0011] The address code is used to set the module communication address. The platform door system identifies the location of the detected unit by the difference in address.

[0012] The door status indicator light control module is used to control the door status indicator light. The MCU controls the door status indicator light to display the corresponding status according to the status of the travel switch.

[0013] The voice prompt module is used to provide voice prompts. For situations with high operating risks, it prompts on-site personnel to perform relevant emergency measures through voice.

[0014] The travel switch status detection module is used to detect the status of the travel switch contacts; the travel switch status display module is used to display the actual status of each travel switch contact in real time;

[0015] The status feedback module is used to feed back the status of the detected unit to the DCU, and the DCU completes the data upload;

[0016] The communication module is used to directly feed back the status of the detected unit to the platform door system monitoring host.

[0017] A detection method for a platform door system emergency door and end door status detection device comprises the following steps:

[0018] S1): According to the principle of door opening status priority, the system assigns corresponding sound, light and voice alarm prompts to various travel switch states detected by the system;

[0019] S2): The MCU periodically reads the door status information, which includes the emergency door switch status information or the end door switch status information, detects whether the door switch status changes, and determines what state the door is in. If the door is in a closed state, the closed state of the emergency door or the end door is detected and determined; if the door is in an open state, the open state of the emergency door or the end door is detected and determined.

[0020] When the door body is in a closed state, the method for detecting and judging the closed state of the emergency door or the end door is:

[0021] P1): MCU detects whether the state of each contact is consistent with the door being closed and locked according to the travel switch state detection module. If it is consistent, it determines that the door is in the closed and locked state;

[0022] P2): When the MCU detects that the state of a certain contact in the locked position is abnormal according to the limit switch state detection module, it will judge the state of each contact of the limit switch again after a delay;

[0023] P21): If only the locked position contact is in abnormal state, it is judged that there is a fault in the locked position limit switch on site;

[0024] P22): If it is detected at the same time that the status of the two sets of closed position limit switches are reversed, it is judged that the door body is in the open state and the locked position limit switch is faulty;

[0025] P23): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit and locked position limit switches are faulty at the same time.

[0026] P3): When the MCU detects that the locked position limit switch status is reversed, it will judge the status of each contact point of the travel again after a delay;

[0027] P31): If the state of the travel switch is still only locked, it is judged that the door is unlocked but not opened;

[0028] P32): If it is detected at the same time that the status of the two sets of closed limit switches are reversed, it is judged that the door is in the open state;

[0029] P33): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit switch is faulty;

[0030] P4): When the MCU detects that a contact of the closed position limit switch is in an abnormal state, it determines that a closed position limit switch fault has occurred on site;

[0031] P5): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay;

[0032] P51): If the state of the travel switch in the closed position is still reversed, it is judged that the door body is in the open state and the travel switch in the locked position is faulty;

[0033] P52): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the open state;

[0034] P53): If a group of lock-in-place travel switches are detected to have changed at the same time, it is judged that the door is in the open state and the lock-in-place travel switch is faulty.

[0035] When the door body is in the open state, the method for detecting and judging the opening state of the emergency door or the end door is:

[0036] M1): MCU detects that the state of each contact of the travel switch is consistent with the door being open, and then determines that the door is in the open state;

[0037] M2): When the MCU detects that a contact of the closed limit switch is abnormal, it will judge the status of each contact of the limit switch again after a delay;

[0038] M21): If only the contact state of the closed position limit switch is abnormal, it is judged that a closed position limit switch failure occurs on site;

[0039] M22): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the closed and locked state and the closed position limit limit switch is faulty;

[0040] M23): If a set of lock position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the close position limit and lock position limit switches are faulty at the same time;

[0041] M3): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay;

[0042] M31): If the state of the travel switch in the closed position is still reversed, it is judged that the door is closed but not locked;

[0043] M32): If the status of the two sets of locked position limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state;

[0044] M32): If a group of lock-in position switches are detected to have changed at the same time, it is judged that the door body is in a closed and unlocked state and the lock-in position travel switch is faulty.

[0045] M4): When the MCU detects that a contact of the lock-in position limit switch is abnormal, it determines that a lock-in position limit switch fault occurs on site;

[0046] M5): When the MCU detects that the locked position limit switch state is reversed, it will judge the state of each contact of the limit switch again after a delay;

[0047] M51): If only the locked position limit switch status is reversed, it is determined that the door is in the open state and the locked position limit switch is faulty;

[0048] M52): If the status of the two sets of closed limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state;

[0049] M53): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door body is in a closed and locked state, and the closed position limit switch is faulty.

[0050] For platform door systems that use a single-detection travel switch, when the door is in the closed state, if one set of contacts on the travel switch flips, it is determined that the door is in the open state and the travel switch is faulty; if both sets of contacts on the travel switch flip, it is determined that the door is in the open state.

[0051] When the door is in the open state: when one set of contacts of the travel switch flips, it is judged that the door is in the open state and the travel switch is faulty; when two sets of contacts of the travel switch flip, it is judged that the door is in the closed and locked state.

[0052] When the MCU detects the status of an emergency door or end door, it will use sound and light alarms to remind on-site personnel to take relevant emergency measures and upload specific information to the PSC cabinet. When it detects that the door is closed but not locked, unlocked but not opened, or the closed and locked travel switches are faulty at the same time, it will use voice to remind on-site personnel to confirm the door status. When the personnel confirm that there is no abnormality in the door status, the voice prompt will be cancelled after a delay.

[0053] The emergency door status detection has the function of safety circuit breakpoint detection. When the emergency door safety circuit contact is disconnected, the door status indicator light corresponding to the emergency door will be lit immediately;

[0054] When the MCU detects that the emergency door has completed a door opening and closing action, it re-detects the safety circuit status. If the safety circuit returns to normal, the door status indicator light goes out; if the safety circuit is abnormal, the door status indicator light remains on.

[0055] The present invention discloses a device and method for detecting the status of an emergency door and a short-haired cat of a platform door system. The device adds two states of a locked-position travel switch failure and a closed-position travel switch failure on the basis of the original four states of open, closed, closed but not locked, and locked but not closed. The device formulates different alarm prompts according to the influence of the several states. On-site personnel adopt different emergency handling procedures according to different fault causes, thereby reducing the problem of accidental opening of emergency doors and end doors in the platform door system due to improper emergency handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0057] Figure 2 This is the schematic diagram of the end door contact detection principle.

[0058] Figure 3 This is the schematic diagram of the normally closed contact detection of the emergency door.

[0059] Figure 4 Schematic diagram of emergency door normally open contact detection DETAILED DESCRIPTION

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the implementation of the present invention, not the entire implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0061] like Figures 1 to 4 As shown, a platform door system emergency door and end door status detection device includes an MCU, a power module, an address code, a door status indicator light control module, a voice prompt module, a travel switch status detection module, a travel switch status display module, a status feedback module and a communication module;

[0062] The MCU detects at least two sets of contacts of the same travel switch, and reflects the status of the travel switch according to the different states of the two sets of contacts of the same travel switch when the emergency door and the end door are in motion, and determines the actual status of the emergency door and the end door at this time;

[0063] The power module is used to convert the DC110V driving power of the platform door system into the device operating voltage;

[0064] The address code is used to set the module communication address. The platform door system identifies the location of the detected unit by the difference in address.

[0065] The door status indicator light control module is used to control the door status indicator light. The MCU controls the door status indicator light to display the corresponding status according to the status of the travel switch.

[0066] The voice prompt module is used to provide voice prompts. For situations with high operating risks, it prompts on-site personnel to perform relevant emergency measures through voice.

[0067] The travel switch status detection module is used to detect the status of the travel switch contacts; the travel switch status display module is used to display the actual status of each travel switch contact in real time;

[0068] The status feedback module is used to feed back the status of the detected unit to the DCU, and the DCU completes the data upload;

[0069] The communication module is used to directly feed back the status of the detected unit to the platform door system monitoring host.

[0070] A detection method for a platform door system emergency door and end door status detection device comprises the following steps:

[0071] S1): According to the principle of door opening status priority, the system assigns corresponding sound, light and voice alarm prompts to various travel switch states detected by the system;

[0072] S2): The MCU periodically reads the door status information, which includes the emergency door switch status information or the end door switch status information, detects whether the door switch status changes, and determines what state the door is in. If the door is in a closed state, the closed state of the emergency door or the end door is detected and determined; if the door is in an open state, the open state of the emergency door or the end door is detected and determined.

[0073] When the door body is in a closed state, the method for detecting and judging the closed state of the emergency door or the end door is:

[0074] P1): MCU detects whether the state of each contact is consistent with the door being closed and locked according to the travel switch state detection module. If it is consistent, it determines that the door is in the closed and locked state;

[0075] P2): When the MCU detects that the state of a certain contact in the locked position is abnormal according to the limit switch state detection module, it will judge the state of each contact of the limit switch again after a delay;

[0076] P21): If only the locked position contact is in abnormal state, it is judged that there is a fault in the locked position limit switch on site;

[0077] P22): If it is detected at the same time that the status of the two sets of closed position limit switches are reversed, it is judged that the door body is in the open state and the locked position limit switch is faulty;

[0078] P23): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit and locked position limit switches are faulty at the same time.

[0079] P3): When the MCU detects that the locked position limit switch status is reversed, it will judge the status of each contact point of the travel again after a delay;

[0080] P31): If the state of the travel switch is still only locked, it is judged that the door is unlocked but not opened;

[0081] P32): If it is detected at the same time that the status of the two sets of closed limit switches are reversed, it is judged that the door is in the open state;

[0082] P33): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit switch is faulty;

[0083] P4): When the MCU detects that a contact of the closed position limit switch is in an abnormal state, it determines that a closed position limit switch fault has occurred on site;

[0084] P5): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay;

[0085] P51): If the state of the travel switch in the closed position is still reversed, it is judged that the door body is in the open state and the travel switch in the locked position is faulty;

[0086] P52): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the open state;

[0087] P53): If a group of lock-in-place travel switches are detected to have changed at the same time, it is judged that the door is in the open state and the lock-in-place travel switch is faulty.

[0088] When the door body is in the open state, the method for detecting and judging the opening state of the emergency door or the end door is:

[0089] M1): MCU detects that the state of each contact of the travel switch is consistent with the door being open, and then determines that the door is in the open state;

[0090] M2): When the MCU detects that a contact of the closed limit switch is abnormal, it will judge the status of each contact of the limit switch again after a delay;

[0091] M21): If only the contact state of the closed position limit switch is abnormal, it is judged that a closed position limit switch failure occurs on site;

[0092] M22): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the closed and locked state and the closed position limit limit switch is faulty;

[0093] M23): If a set of lock position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the close position limit and lock position limit switches are faulty at the same time;

[0094] M3): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay;

[0095] M31): If the state of the travel switch in the closed position is still reversed, it is judged that the door is closed but not locked;

[0096] M32): If the status of the two sets of locked position limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state;

[0097] M32): If a group of lock-in position switches are detected to have changed at the same time, it is judged that the door body is in a closed and unlocked state and the lock-in position travel switch is faulty.

[0098] M4): When the MCU detects that a contact of the lock-in position limit switch is abnormal, it determines that a lock-in position limit switch fault occurs on site;

[0099] M5): When the MCU detects that the locked position limit switch state is reversed, it will judge the state of each contact of the limit switch again after a delay;

[0100] M51): If only the locked position limit switch status is reversed, it is determined that the door is in the open state and the locked position limit switch is faulty;

[0101] M52): If the status of the two sets of closed limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state;

[0102] M53): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door body is in a closed and locked state, and the closed position limit switch is faulty.

[0103] For platform door systems that use a single-detection travel switch, when the door is in the closed state, if one set of contacts on the travel switch flips, it is determined that the door is in the open state and the travel switch is faulty; if both sets of contacts on the travel switch flip, it is determined that the door is in the open state.

[0104] When the door is in the open state: when one set of contacts of the travel switch flips, it is judged that the door is in the open state and the travel switch is faulty; when two sets of contacts of the travel switch flip, it is judged that the door is in the closed and locked state.

[0105] When the MCU detects the status of an emergency door or end door, it will use sound and light alarms to remind on-site personnel to take relevant emergency measures and upload specific information to the PSC cabinet. When it detects that the door is closed but not locked, unlocked but not opened, or the closed and locked travel switches are faulty at the same time, it will use voice to remind on-site personnel to confirm the door status. When the personnel confirm that there is no abnormality in the door status, the voice prompt will be cancelled after a delay.

[0106] In this embodiment, an emergency door with two normally open and two normally closed travel switches is used. The emergency door status detection has a safety circuit breakpoint detection function. When the emergency door safety circuit contacts are disconnected, the door status indicator corresponding to the emergency door is immediately lit;

[0107] When the MCU detects that the emergency door has completed a door opening and closing action, it re-detects the safety circuit status. If the safety circuit returns to normal, the door status indicator light goes out; if the safety circuit is abnormal, the door status indicator light remains on.

[0108] The emergency door adopts a normally open and normally closed travel switch. When the door is in the closed state:

[0109] The system detects that the status of each contact of the travel switch is consistent with the door being in a closed and locked state, and the system determines that the door is in a closed and locked state.

[0110] When the system detects that the emergency door safety circuit contacts are disconnected, the door status indicator light corresponding to the emergency door will be lit immediately. When the system detects that the emergency door has completed one door opening and closing action, it will re-check the safety circuit status. If the safety circuit returns to normal, the door status indicator light will go out. If the safety circuit is abnormal, the door status indicator light will remain on.

[0111] When the system detects that the locked position travel switch state is reversed, the system will judge the state of each contact of the travel switch again after a system delay; if only the locked position travel switch state is reversed, the system will judge that the door is unlocked but the door is not open; if the closed position travel switch state is detected to be reversed at the same time, the system will judge that the door is open.

[0112] When the system detects that the state of the closed position travel switch is reversed, the system will judge the state of each contact of the travel switch again after a system delay; if only the closed position travel switch state is reversed, the system will judge that the on-site door body is in the open state and the locked position switch is faulty; if the locked position travel switch state is detected to be reversed at the same time, the system will judge that the on-site door body is in the open state.

[0113] When the door is open:

[0114] The system detects that the status of each contact of the travel switch is consistent with the door being in the open state, and the system determines that the door is in the open state.

[0115] When the system detects that the state of the closed position travel switch is reversed, the system will judge the state of each contact of the travel switch again after a system delay; if only the closed position travel switch state is reversed, the system will judge that the door is in a closed but not locked state; if the locked position travel switch state is detected to be reversed at the same time, the system will judge that the door is in a closed and locked state.

[0116] When the system detects that the state of the locked position travel switch is reversed, the system will judge the state of each contact of the travel switch again after a system delay; if only the locked position travel switch state is reversed, the system will judge that the on-site door body is in the open state and the locked position switch is faulty; if the closed position travel switch state is detected to be reversed at the same time, the system will judge that the on-site door body is in the closed and locked state.

[0117] When the system detects the corresponding status, it will alert the on-site personnel through sound and light alarms to take relevant emergency measures and upload the specific information to the PSC cabinet.

[0118] When using a single-stroke switch for detection, when the door is in the closed state:

[0119] When one set of contacts of the travel switch flips, the system determines that the door is in the open state and the travel switch is faulty; when two sets of contacts of the travel switch flip, the system determines that the door is in the open state.

[0120] When the door is in the open state: when one set of contacts of the travel switch flips, the system determines that the door is in the open state and the travel switch is faulty; when two sets of contacts of the travel switch flip, the system determines that the door is in the closed and locked state.

[0121] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A detection method for a platform door system emergency door and end door status detection device, characterized by: The steps include: S1): According to the principle of door opening status priority, the system assigns corresponding sound, light and voice alarm prompts to various travel switch states detected by the system; S2): The MCU periodically reads the door status information, which includes the emergency door switch status information and the end door switch status information, detects whether the door switch status changes, and determines what state the door is in. If the door is in a closed state, the closed state of the emergency door and the end door is detected and determined; if the door is in an open state, the open state of the emergency door and the end door is detected and determined; When the door body is in the closed state, the method for detecting and judging the closed state of the emergency door and the end door is: P1): MCU detects whether the state of each contact is consistent with the door being closed and locked according to the travel switch state detection module. If it is consistent, it determines that the door is in the closed and locked state; P2): When the MCU detects that the state of a certain contact in the locked position is abnormal according to the limit switch state detection module, it will judge the state of each contact of the limit switch again after a delay; P21): If only the locked position contact is in abnormal state, it is judged that there is a fault in the locked position limit switch on site; P22): If it is detected at the same time that the status of the two sets of closed position limit switches are reversed, it is judged that the door body is in the open state and the locked position limit switch is faulty; P23): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit and locked position limit switches are faulty at the same time; P3): When the MCU detects that the locked position limit switch status is reversed, it will judge the status of each contact point of the travel again after a delay; P31): If the state of the travel switch is still only locked, it is judged that the door is unlocked but not opened; P32): If it is detected at the same time that the status of the two sets of closed limit switches are reversed, it is judged that the door is in the open state; P33): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the closed position limit switch is faulty; P4): When the MCU detects that a contact of the closed position limit switch is in an abnormal state, it determines that a closed position limit switch fault has occurred on site; P5): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay; P51): If the state of the travel switch in the closed position is still reversed, it is judged that the door body is in the open state and the travel switch in the locked position is faulty; P52): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the open state; P53): If a group of lock-in-place travel switches are detected to have changed at the same time, it is judged that the door is in the open state and the lock-in-place travel switch is faulty.

2. The detection method of the platform door system emergency door and end door status detection device according to claim 1, characterized in that: When the door body is in the open state, the method for detecting and judging the opening state of the emergency door and the end door is: M1): MCU detects that the state of each contact of the travel switch is consistent with the door being open, and then determines that the door is in the open state; M2): When the MCU detects that a contact of the closed limit switch is abnormal, it will judge the status of each contact of the limit switch again after a delay; M21): If only the contact state of the closed position limit switch is abnormal, it is judged that a closed position limit switch failure occurs on site; M22): If it is detected at the same time that the status of the two sets of locked position limit switches are reversed, it is judged that the door body is in the closed and locked state and the closed position limit limit switch is faulty; M23): If a set of lock position limit switches are detected to have changed at the same time, it is judged that the door is in the open state and the close position limit and lock position limit switches are faulty at the same time; M3): When the MCU detects that the state of the travel switch in the closed position has been reversed, it will judge the state of each contact of the travel switch again after a delay; M31): If the state of the travel switch in the closed position is still reversed, it is judged that the door is closed but not locked; M32): If the status of the two sets of locked position limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state; M32): If a group of lock position switches are detected to have changed at the same time, it is judged that the door body is in a closed and unlocked state and the lock position limit switch is faulty; M4): When the MCU detects that a contact of the lock-in position limit switch is abnormal, it determines that a lock-in position limit switch fault occurs on site; M5): When the MCU detects that the locked position limit switch state is reversed, it will judge the state of each contact of the limit switch again after a delay; M51): If only the locked position limit switch status is reversed, it is determined that the door is in the open state and the locked position limit switch is faulty; M52): If the status of the two sets of closed limit switches are detected to be reversed at the same time, it is judged that the door body is in the closed and locked state; M53): If a group of closed position limit switches are detected to have changed at the same time, it is judged that the door body is in a closed and locked state, and the closed position limit switch is faulty.

3. The detection method of the platform door system emergency door and end door status detection device according to claim 1, characterized in that: For platform door systems that use a single-detection travel switch, when the door is in the closed state, if one set of contacts on the travel switch flips, it is determined that the door is in the open state and the travel switch is faulty; if both sets of contacts on the travel switch flip, it is determined that the door is in the open state. When the door is in the open state: when one set of contacts of the travel switch flips, it is judged that the door is in the open state and the travel switch is faulty; when two sets of contacts of the travel switch flip, it is judged that the door is in the closed and locked state.

4. The detection method of the platform door system emergency door and end door status detection device according to claim 1, characterized in that: When the MCU detects the status of the emergency door and end door, it will use sound and light alarms to remind on-site personnel to take relevant emergency measures and upload specific information to the PSC cabinet. When it detects that the door is closed but not locked, unlocked but not opened, or the closed and locked travel switches are faulty at the same time, it will remind on-site personnel to confirm the door status through voice. When the personnel confirm that there is no abnormality in the door status, the voice prompt will be cancelled after a delay.

5. The detection method of the platform door system emergency door and end door status detection device according to claim 1, characterized in that: The emergency door status detection has the function of safety circuit breakpoint detection. When the emergency door safety circuit contact is disconnected, the door status indicator light corresponding to the emergency door will be lit immediately; When the MCU detects that the emergency door has completed a door opening and closing action, it re-detects the safety circuit status. If the safety circuit returns to normal, the door status indicator light goes out; if the safety circuit is abnormal, the door status indicator light remains on.

6. A platform door system emergency door and end door status detection device according to any one of claims 1 to 5, characterized in that: It includes MCU, power module, address code, door status indicator light control module, voice prompt module, travel switch status detection module, travel switch status display module, status feedback module and communication module; The MCU detects at least two sets of contacts of the same travel switch, and reflects the status of the travel switch according to the different states of the two sets of contacts of the same travel switch when the emergency door and the end door are in motion, and determines the actual status of the emergency door and the end door at this time; The power module is used to convert the DC110V driving power of the platform door system into the device operating voltage; The address code is used to set the module communication address. The platform door system identifies the location of the detected unit by the difference in address. The door status indicator light control module is used to control the door status indicator light. The MCU controls the door status indicator light to display the corresponding status according to the status of the travel switch. The voice prompt module is used to provide voice prompts. For situations with high operating risks, it prompts on-site personnel to perform relevant emergency measures through voice. The travel switch status detection module is used to detect the status of the travel switch contacts; the travel switch status display module is used to display the actual status of each travel switch contact in real time; The status feedback module is used to feed back the status of the detected unit to the DCU, and the DCU completes the data upload; The communication module is used to directly feed back the status of the detected unit to the platform door system monitoring host.

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