Gap detection bypass device of platform door system and control method of gap detection bypass device

Abstract

The invention provides a gap detection bypass control method for a platform door system. The gap detection bypass control method comprises the steps that sliding door safety circuit state information of the platform door system is read periodically; according to the state information of the sliding door safety circuit, judging whether the sliding door safety circuit is closed again after being disconnected, and if yes, obtaining the LCB state of the sliding door corresponding to the gap detection device; when the LCB state is a bypass state, the detection end of the gap detection device is bypassed; when the LCB state is not the bypass state, the gap detection device is controlled to normally execute a gap detection function; if the state of the detection end of the gap detection device detected within the detection duration is a normal detection state, the gap detection is ended; if it is detected that the detection end state of the gap detection device is a detection abnormal state within the detection duration, a gap detection device control panel is controlled to give an alarm, a gap detection safety loop is disconnected, and a door state indicator lamp corresponding to the sliding door is lightened.

Description

Technical Field

[0001] The present invention relates to the field of rail transit platform safety protection equipment, and in particular to a platform door system gap detection bypass device and a control method thereof. Background Art

[0002] In the operation of rail transit, platform door systems are generally installed on the platform to separate the platform from the track area and enable passengers to get on and off the train. Considering the train clearance during the operation of the train, the platform door system is often required to have a certain distance from the train that stops at the station, so that there is a certain width of gap between the platform door system and the train that stops at the station, resulting in certain safety hazards in the operation of the platform door system.

[0003] In order to improve the safety of rail transit operations, in addition to installing safety baffles on the edges of the sliding doors of platform doors, a more common method is to add a gap detection device to automatically determine whether there are foreign objects between the platform door system and the train at the station. For example, CN202311252476.X provides a platform door gap detection system and a control method thereof. After a single sliding door is closed, the gap detection device corresponding to the sliding door is triggered for detection. When an abnormality occurs, the gap detection device and the sliding door are synchronously isolated, which is safer. However, in actual work, it is too costly to set up a set of gap detection devices for a single sliding door. Most subways still use multiple sliding doors to share a set of gap detection devices for gap detection.

[0004] For curved platforms, multiple gap detection devices need to be installed in a single carriage to provide more comprehensive monitoring coverage, improve the safety factor, and ensure that the train can remain safe under various operating conditions; however, due to the large curvature of the curved platform, gap detection is very prone to false alarm failures. When a false alarm failure occurs, the device controller bypass function directly bypasses the detection end of the gap detection device corresponding to the entire carriage. At this time, if all the corresponding sliding doors are disabled, it will be a continuous failure of 3 or more sliding doors, and the sliding doors must be separated and personnel must be arranged for duty; if the sliding doors are not disabled, the multiple sliding doors corresponding to the entire carriage will operate without gap detection, posing a major safety hazard.

[0005] Therefore, in order to solve the problem of platform door systems with multiple gap detection devices in a single carriage, it is very necessary to provide a gap detection bypass device that can synchronously bypass the gap detection device and disable the corresponding sliding door, and a control method thereof.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0007] The purpose of the present invention is to address the deficiencies of the prior art and to provide a platform door system gap detection bypass device and a control method thereof, so as to effectively reduce the impact of gap detection failures on train operation when multiple gap detection devices are installed in a single carriage, and to improve fault handling efficiency.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is: A first aspect provides a platform door system gap detection bypass control method, comprising the following steps: Periodically read the status information of the sliding door safety circuit of the platform door system; Determine whether the sliding door safety circuit is disconnected and then closed again according to the sliding door safety circuit status information, and if so, obtain the LCB status of the sliding door corresponding to the gap detection device; When the LCB state is the bypass state, the detection end of the gap detection device is bypassed; When the LCB state is not the bypass state, the control gap detection device normally performs the gap detection function; If the detection end states of the gap detection devices detected within the detection time are all in the normal detection state, then the gap detection is terminated; If the detection end state of the gap detection device is detected as an abnormal detection state within the detection time, the control panel of the gap detection device will alarm and disconnect the gap detection safety circuit, and light up the door status indicator light of the corresponding sliding door.

[0009] Further, when it is detected for the first time that the detection end state of the gap detection device is in the detection abnormal state and the LCB state is detected as the bypass state, the door state indicator light control function is cancelled and the gap detection bypass function is not started; When it is not the first time that the detection end state of the gap detection device is detected as a detection abnormal state, and when the LCB state is detected as a bypass state, the gap detection bypass function is started synchronously when the door state indicator light control function is canceled.

[0010] Further, after lighting up the door status indicator light corresponding to the sliding door, the station personnel press the emergency stop button and check the clearance between the sliding door and the train door according to the prompt of the door status indicator light; If there is a foreign object, the gap detection device is judged to be functioning normally, and the foreign object is removed by reopening the sliding door; and when the LCB is detected to be in bypass state during the process of reopening the sliding door through the LCB, the door status indicator light control state is cancelled, and the door status indicator light is controlled again when the LCB returns to the automatic position; If there is no foreign matter, the gap detection device is judged to be malfunctioning, and the detection end of the gap detection device and the sliding door are bypassed through the LCB; at the same time, the door status indicator light control state is canceled, but the normal detection state is not sent to the gap detection device.

[0011] Furthermore, after the receiving end of the gap detection device receives the normal detection status sent by the detection end, the gap detection alarm state is cancelled and the gap detection safety circuit is closed, the platform door system safety circuit is closed, and the train leaves the station normally; Alternatively, when the receiving end of the gap detection device does not receive the normal detection status sent by the detection end, the gap detection safety circuit of the corresponding circuit is bypassed through the gap detection device control panel, the platform door system safety circuit is closed, and the train leaves the station normally.

[0012] Further, if the detection time has not ended, when the detection end state of the gap detection device is detected to be abnormal again, the LCB state of the sliding door is reacquired; When the LCB status is in bypass status, the door status indicator light control status is cancelled; When the LCB status is in the automatic position, the door status indicator light of the corresponding sliding door is re-lit.

[0013] Further, when the detection end of the gap detection device and the sliding door are bypassed by LCB, the following is performed: Each time a sliding door is bypassed, the corresponding door status indicator light control status is cancelled; After bypassing all the sliding doors corresponding to the detection end of the gap detection device, bypass the detection end of the gap detection device.

[0014] A second aspect of the present invention provides a platform door system gap detection bypass device, comprising a safety circuit state detection module, a gap detection state detection module, a gap detection bypass module, a door state indicator light control module and a detection controller; The safety circuit state detection module is used to detect the state of the sliding door safety circuit of the platform door system or receive the gap detection start and stop signal sent by the detection controller; The gap detection state detection module is used to detect the state of the detection end of the gap detection device; The gap detection bypass module is used to detect the LCB state of the sliding door corresponding to the gap detection device; The door status indicator light control module is used to control the door status indicator light; The detection controller is respectively connected to the safety circuit status detection module, the gap detection status detection module, the gap detection bypass module, and the door status indicator light detection controller to execute the platform door system gap detection bypass control method described in the first aspect.

[0015] The third aspect provides a platform door system gap detection system, wherein each sliding door is provided with a DCU, an LCB, a safety circuit, a door status indicator light and a gap detection device, and also includes the platform door system gap detection bypass device described in the second aspect.

[0016] Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, after the sliding door safety circuit of the platform door system is disconnected and then closed again, the present invention detects whether the gap detection device outputs a gap detection normal state. If the gap detection normal state is detected, it is determined that there is no foreign matter in the gap between the sliding door and the car door; if the gap detection normal state is not detected, it is determined that there may be foreign matter in the gap between the sliding door and the car door, and at this time the gap detection device alarms and the corresponding door status indicator lamp alarms. After the station staff presses the emergency stop button, they check the gap between the sliding door and the car door according to the prompt of the door status indicator lamp. If there is foreign matter, they can remove the foreign matter by reopening the sliding door; if there is no foreign matter, it is determined that the gap detection device is abnormal, and the gap detection door status indicator lamp control state is cancelled after the LCB is used to bypass the corresponding sliding door. After the station operates the gap detection device bypass switch, the train leaves the station normally; the gap detection device and sliding door corresponding to the subsequent train will be in the bypass state.

[0017] This method can effectively reduce the impact of gap detection failure on driving when multiple gap detection devices are installed in a single carriage, and improve the efficiency of fault handling. The fault has a smaller impact range and is simpler to operate. For a single carriage on a curved platform, multiple gap detection devices need to be installed. Only the LCB of the sliding door corresponding to the faulty gap detection device needs to be bypassed, which will not affect other sliding doors in the same carriage. The display is more intuitive, and the door status indicator shows that there is an abnormal gap detection device, so station personnel can directly lock the faulty unit; The safety of the system is not affected. When the bypass device detects that the output status of the detection end of the gap detection device is abnormal, if the LCB bypass signal is detected, only the door status indicator light control function is cancelled, and the gap detection bypass function is not started. The gap detection bypass function will only be started when the platform door system receives the signal that the sliding door safety circuit is disconnected and then closed again and the LCB is in the bypass state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of the platform door system gap detection bypass method described in the present invention.

[0019] Figure 2 It is a structural diagram of the platform door system gap detection bypass device described in the present invention.

[0020] Figure 3 It is a structural diagram of the platform door system gap detection system described in the present invention. DETAILED DESCRIPTION

[0021] Glossary: The door controller (DCU for short) is the control device for the sliding door motor, which is mainly composed of an interface unit, a drive unit and a main control unit. Its main functions are to control the electronic mechanical lock, drive the motor to complete the opening and closing of the sliding door, read the status of the travel switch, and control the peripheral sound and light alarm devices.

[0022] The local control box (LCB for short) includes automatic position, bypass position, manual closing position and manual opening position. When it is in the bypass position, the single sliding door unit is isolated from the system, cutting off the power supply of the door without affecting the normal operation of the entire system, making maintenance easier.

[0023] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0024] Example 1 This embodiment provides a platform door system gap detection bypass control method, such as Figure 2 As shown, the following steps are included: Step 1: Periodically read the status information of the sliding door safety circuit of the platform door system.

[0025] Specifically, the sliding door safety circuit status information includes isolation status, automatic status, door closing status and door opening status.

[0026] Among them, the isolation state means: when the sliding door control function is cut off, if the safety circuit is normal after the door is closed and locked, the train can enter and exit the station normally; if the safety circuit is disconnected when the door is open, the train cannot enter and exit the station normally.

[0027] Automatic status indicates: the sliding door operates normally, and there is no special safety circuit status indication.

[0028] Door closing status indicates: when the sliding door power supply is normal, the IBP / PSL / SIG control circuit is cut off, the safety circuit bypass allows the train to enter and exit the station normally, and local door closing operations can be performed.

[0029] Door opening status indicates: When the sliding door power supply is normal, the IBP / PSL / SIG control circuit is cut off and the safety circuit is bypassed, allowing trains to enter and exit the station normally, and local door opening operations can be performed.

[0030] These states reflect the working modes of the sliding door's safety circuit in different situations, ensuring the safety of train operation and passengers.

[0031] Step 2: determine whether the sliding door safety circuit is disconnected and then closed again based on the sliding door safety circuit status information. If so, obtain the LCB status of the sliding door corresponding to the gap detection device.

[0032] Specifically, when passengers get on and off the platform, the sliding door closes synchronously with the train door under the control of the signal system. At this time, the safety of the gap between the platform door system and the train needs to be tested. Since the sliding door safety circuit is disconnected and then closed again at this time, it can be judged whether the sliding door has completed a door opening and closing action based on the sliding door safety circuit state. Specifically, when the sliding door safety circuit is disconnected and then closed again, it means that the sliding door has completed a door opening and closing action.

[0033] In the specific implementation, when the read sliding door safety circuit status information includes continuous door opening and closing status, the sliding door safety circuit status is determined to be disconnected and then closed again. At this time, the gap detection device is controlled to start detection and begin to detect the detection end status of the gap detection device.

[0034] Step 3, when the LCB state is not the bypass state, controlling the gap detection device to normally perform the gap detection function; If the detection end status of the gap detection device detected within the detection time is all in the normal detection state, the gap detection is terminated and the bypass device does not operate until all the detections on this side are normal. The safety circuit of the platform door system is closed and the train can leave the station normally. If the detection end of the gap detection device is detected to be in an abnormal detection state within the detection time, the control panel of the gap detection device will alarm and disconnect the gap detection safety circuit, light up the door status indicator of the corresponding sliding door, disconnect the platform door system safety circuit, and the train cannot leave the station.

[0035] Among them, the control panel of the gap detection device is equipped with a two-position switch of "normal" and "bypass". Under normal working conditions, the switch is in the "normal" position; when switched to the "bypass" position, the "bypass indication" alarm indicator lights up to alarm, and the gap detection protection device is not connected to the platform door safety circuit.

[0036] When the LCB state is in the bypass state, the detection end of the gap detection device is bypassed so that the detection end of the gap detection device feeds back information that there is no abnormality in the gap detection state to the receiving end of the gap detection device; specifically, the LCB can bypass the gap detection device in the closed state, open state or isolated state.

[0037] Specifically, further, when it is detected for the first time that the detection end state of the gap detection device is a detection abnormal state, and the LCB state is detected to be a bypass state, the door state indicator light control function is cancelled, and the gap detection bypass function is not started; When it is not the first time that the detection end state of the gap detection device is detected as a detection abnormal state, and when the LCB state is detected as a bypass state, the gap detection bypass function is started synchronously when the door state indicator light control function is canceled.

[0038] Furthermore, each time the detection end of the gap detection device is detected to be abnormal, the door status indicator light of the corresponding sliding door is turned on, and the station personnel quickly determine that the gap detection abnormality occurs on site, and lock the specific position of the sliding door where the gap detection abnormality occurs, and check the gap between the sliding door and the car door after pressing the emergency stop button; If there is a foreign object, the gap detection device is judged to be functioning normally, and the sliding door is manually opened through the LCB to remove the foreign object and then the sliding door is closed; after the sliding door is manually opened and closed through the LCB, the LCB is restored to the automatic position. After the bypass device detects that the LCB is in the manual position, the door status indicator light control function is cancelled, and the sliding door safety circuit of the platform door system is closed after the sliding door is closed; The detection end of the gap detection device detects that the foreign object has disappeared and feeds back a normal gap detection signal to the control panel of the gap detection device. The gap detection safety circuit is closed, the safety circuit of the entire side is closed, and the train can leave the station normally.

[0039] If there is no foreign object, it is judged that the detection end of the gap detection device itself is abnormal. The detection end and the sliding door unit of the gap detection device are bypassed through LCB. After the bypass device detects that the LCB is in the bypass position, the door status indicator light control function is canceled. When the receiving end of the gap detection device does not receive the normal detection status sent by the detection end, the gap detection safety circuit of the corresponding circuit is bypassed through the gap detection device control panel, the platform door system safety circuit is closed, and the train leaves the station normally.

[0040] Further, if the detection time has not ended, when the detection end state of the gap detection device is detected to be abnormal again, the LCB state of the sliding door is reacquired; When the LCB status is bypass status, cancel the door status indicator light control status; When the LCB status is in the automatic position, the door status indicator light of the corresponding sliding door is re-lit.

[0041] Furthermore, when multiple sliding doors share a set of gap detection devices, several sliding doors are controlled simultaneously by enabling the detection controller selection device; after the corresponding gap detection bypass module detects the LCB bypass signal, its door status indicator light control state is canceled; after all gap detection bypass modules detect the LCB bypass signal, a gap detection bypass signal is generated, and subsequently when it is detected that the platform door system has a sliding door safety circuit status that is disconnected and then reopened, the corresponding gap detection device detection end and the sliding door will be in a bypass state.

[0042] It should be noted that the priority of the sliding door safety circuit status of the platform door system is higher than the continuous detection time. If the sliding door safety circuit is disconnected before the continuous detection time ends, the detection of the detection end status of the gap detection device will be immediately terminated.

[0043] It should be noted that when the output status of the detection end of the gap detection device is detected to be abnormal for the first time, after the LCB bypass signal is detected, only the door status indicator light control function is cancelled, and the gap detection bypass function is not started. The gap detection bypass function will only be started when the platform door system receives the signal that the sliding door safety circuit is disconnected and then closed again and the LCB is in the bypass state.

[0044] Example 2 The difference between this embodiment and embodiment 1 is that: If multiple sliding doors share one gap detection device, the detection end of the gap detection device and the sliding door are bypassed by LCB: Each time a sliding door is bypassed, the corresponding door status indicator light control status is cancelled; After bypassing all the sliding doors corresponding to the detection end of the gap detection device, bypass the detection end of the gap detection device.

[0045] Specifically, when multiple sliding doors share a set of gap detection devices, a gap detection device can be selected to control several sliding doors at the same time; after the corresponding gap detection bypass module detects the LCB bypass signal, its door status indicator light control state is canceled; after all gap detection bypass modules detect the LCB bypass signal, a gap detection bypass signal is generated, and subsequently when it is detected that the platform door system has a sliding door safety circuit that is disconnected and then reopened, the corresponding gap detection device detection end and sliding door will be in a bypass state.

[0046] When the level corresponding to the abnormal output state of the detection end of the gap detection device is detected, the door status indicator light corresponding to the enabled circuit is lit to notify the station personnel of the gap detection abnormality.

[0047] Station personnel can quickly determine whether gap detection anomalies occur on site based on the alarm information from the gap detection device control panel and the status of the door status indicator light, and lock the specific location of the sliding door where the gap detection anomaly occurs.

[0048] Example 3 This embodiment provides a platform door system gap detection bypass device, such as Figure 2 As shown, it includes a safety circuit state detection module, a gap detection state detection module, a gap detection bypass module, a door state indicator light control module and a detection controller; The safety circuit state detection module is used to detect the state of the sliding door safety circuit of the platform door system or receive the gap detection start and stop signal sent by the detection controller; The gap detection state detection module is used to detect the state of the detection end of the gap detection device; Specifically, the detection end state of the gap detection device includes a normal state and an abnormal state, wherein the levels in the normal state and the abnormal state are different, so the detection end state can be distinguished according to the difference in levels.

[0049] It can be understood that when the detection end of the gap detection device is in an abnormal state, it means that there is a foreign object between the platform door system and the train or the detection end of the gap detection device malfunctions.

[0050] The gap detection bypass module is used to detect the LCB state of the gap detection device corresponding to the sliding door; specifically, when the LCB state is the automatic state, the receiving end of the gap detection device is controlled by the state of the detection end of the gap detection device; when the LCB state is the bypass state, it is divided into two cases: When it is detected for the first time that the detection end state of the gap detection device is abnormal and the LCB state is in the bypass position state, the door state indicator light control function is canceled and the gap detection bypass function is not started, that is, the gap detection is not bypassed.

[0051] When it is subsequently detected that the detection end state of the gap detection device is abnormal and the LCB state is in the bypass position state, the gap detection bypass function will be started while the door status indicator light control function is canceled to bypass the gap detection.

[0052] It can be understood that after the bypass function is activated, the detection end of the gap detection device feeds back information that there is no abnormality in the gap detection state to the receiving end of the gap detection device.

[0053] The door status indicator light control module is used to control the door status indicator light. Specifically, when the detection end of the gap detection device is in a normal state or the LCB is in a bypass state, the door status indicator light normally displays the operating state of the sliding door. When there is a foreign object between the platform door system and the train or the detection end of the gap detection device malfunctions, the door status indicator light is forcibly lit until the corresponding sliding door LCB is in a bypass state, and the door status indicator light control state is canceled.

[0054] The detection controller is respectively connected to the safety circuit status detection module, the gap detection status detection module, the gap detection bypass module, and the door status indicator light detection controller to execute the platform door system gap detection bypass control method described in Example 1 or Example 2.

[0055] It can be understood that the platform door system gap detection bypass device can also be equipped with a separate bypass switch. When a gap detection malfunction occurs, the sliding door corresponding to the gap detection device detection end is bypassed through the LCB, and the gap detection detection end is bypassed through the gap detection bypass switch.

[0056] Furthermore, the platform door system gap detection bypass device can also be equipped with a separate safety circuit contact, which is connected in series in the platform door system safety circuit, and synchronously bypasses the gap detection detection end, the gap detection device detection end safety circuit, the sliding door and the sliding door safety circuit through the LCB.

[0057] In addition, the platform door system gap detection bypass device is also equipped with an independent communication interface to feed back the status of the gap detection device to the platform door system, thereby realizing software display of gap detection faults.

[0058] In another embodiment, the platform door system gap detection bypass device can eliminate the gap detection device receiving end related equipment, and the gap detection bypass device cooperates with the door status indicator light and LCB to complete the control, status display and bypass of the gap detection.

[0059] Example 4 This embodiment provides a platform door system gap detection system, such as Figure 3 As shown, each sliding door is provided with a DCU, an LCB, a safety circuit, a door status indicator light, a gap detection device, a gap detection device control panel and a sliding door relay, and also includes the platform door system gap detection bypass device described in Example 3.

[0060] Specifically, the gap detection device is arranged on both sides or the top of each sliding door, and includes a detection end and a receiving end. The gap detection device control panel is used to control the detection device.

[0061] Specifically, the safety circuit includes a sliding door safety circuit and a gap detection safety circuit, and the sliding door safety circuit and the gap detection safety circuit are connected in series. When any one of the safety circuits is blocked, the train will not be able to leave the station normally; the sliding door safety circuit includes a sliding door relay and a sliding door relay contact, and the gap detection safety circuit includes a gap detection relay and a gap detection relay contact, and the gap detection relay contact is connected in series with the sliding door relay contact, wherein the sliding door relay contact is a normally closed contact, and the gap detection relay contact is a normally open contact.

[0062] In one embodiment, the LCB is connected in parallel at both ends of the safety circuit to bypass the safety circuit; the platform door system gap detection bypass device is provided with a separate bypass contact, and the bypass contact is connected in series in the safety circuit to synchronously bypass the gap detection detection end, the gap detection device detection end safety circuit, the sliding door and the sliding door safety circuit through the LCB.

[0063] In another embodiment, the LCB is connected in parallel to both ends of the sliding door safety circuit, and the platform door system gap detection bypass device is provided with a separate gap detection bypass switch, and the gap detection bypass switch is connected in parallel to both ends of the gap detection safety circuit. When a gap detection malfunction occurs, the sliding door and the sliding door safety circuit corresponding to the detection end of the gap detection device are bypassed through the LCB, and the detection end of the gap detection device and the safety circuit of the gap detection device detection end are bypassed through the gap detection bypass switch.

[0064] Specifically, the working principle is: When passengers have finished getting on and off the train at the platform, the sliding doors close synchronously with the train doors under the control of the signal system; When the gap detection device control panel receives information that the platform door system's sliding door safety circuit is disconnected and then closed again, the gap detection device is controlled to start detection, and the gap detection bypass device starts status detection.

[0065] When the detection end of the gap detection device detects no abnormality, it feeds back a normal gap detection signal to the gap detection device control panel, and the bypass device does not operate. After all gap detections on this side are normal, the platform door system safety circuit is closed and the train can leave the station normally.

[0066] When the detection end of the gap detection device detects an abnormality, it feeds back a gap detection abnormality signal to the gap detection device control panel. The gap detection control end issues a fault alarm and disconnects the gap detection safety circuit. The platform door system safety circuit is disconnected, and the train cannot leave the station normally.

[0067] When the bypass device detects that the output status of the detection end of the gap detection device is abnormal, the door status indicator light of the corresponding sliding door is lit; station personnel can quickly determine whether there is a gap detection abnormality on site based on the alarm information of the receiving end of the gap detection device and the status of the door status indicator light, and lock the specific position of the sliding door where the gap detection abnormality occurs.

[0068] When checking the site, if there is foreign matter, manually open the sliding door through the LCB to remove the foreign matter and then close the sliding door. Manually open and close the sliding door through the LCB and restore the LCB to the automatic position. After the bypass device detects that the LCB is in the manual position, the door status indicator light control function is canceled. After the sliding door is closed, the sliding door safety circuit of the platform door system is closed; the detection end of the gap detection device detects that the foreign matter has disappeared, and feeds back a normal gap detection signal to the gap detection device control panel. The gap detection safety circuit is closed, the safety circuit of the entire side is closed, and the train can leave the station normally.

[0069] If no foreign object is found, it is judged that the detection end of the gap detection device itself is abnormal. The detection end and the sliding door unit of the gap detection device are bypassed through LCB. After the bypass device detects that the LCB is in the bypass position, the door status indicator light control function is canceled. When the receiving end of the gap detection device does not receive the normal detection status sent by the detection end, the gap detection safety circuit of the corresponding circuit is bypassed through the gap detection device control panel, the platform door system safety circuit is closed, and the train leaves the station normally.

[0070] It should be noted that when the bypass device detects an abnormal output state of the detection end of the gap detection device for the first time, if the LCB bypass signal is detected, only the door status indicator light control function is canceled, and the gap detection bypass function is not started. The gap detection bypass function will only be started when the platform door system receives a signal that the sliding door safety circuit is disconnected and then closed again and the LCB is in the bypass state.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A platform door system gap detection bypass control method, characterized in that: The following steps are involved: Periodically read the status information of the sliding door safety circuit of the platform door system; Determine whether the sliding door safety circuit is disconnected and then closed again according to the sliding door safety circuit status information, and if so, obtain the LCB status of the sliding door corresponding to the gap detection device; When the LCB state is the bypass state, the detection end of the gap detection device is bypassed; When the LCB state is not the bypass state, the control gap detection device normally performs the gap detection function; If the detection end states of the gap detection devices detected within the detection time are all in the normal detection state, then the gap detection is terminated; If the detection end state of the gap detection device is detected as an abnormal detection state within the detection time, the control panel of the gap detection device will alarm and disconnect the gap detection safety circuit, and light up the door status indicator light of the corresponding sliding door.

2. A platform door system gap detection bypass control method according to claim 1, characterized in that: When it is detected for the first time that the detection end state of the gap detection device is in the detection abnormal state and the LCB state is detected as the bypass state, the door state indicator light control function is canceled and the gap detection bypass function is not started; When it is not the first time that the detection end state of the gap detection device is detected as a detection abnormal state, and when the LCB state is detected as a bypass state, the gap detection bypass function is started synchronously when the door state indicator light control function is canceled.

3. A platform door system gap detection bypass control method according to claim 2, characterized in that: After lighting up the door status indicator of the corresponding sliding door, the station staff presses the emergency stop button and checks the clearance between the sliding door and the train door according to the prompt of the door status indicator; If there is a foreign object, the gap detection device is judged to be functioning normally, and the foreign object is removed by reopening the sliding door; and the door status indicator light control state is cancelled during the process of reopening the sliding door through the LCB, and the door status indicator light is controlled again when the LCB returns to the automatic position; If there is no foreign matter, the gap detection device is judged to be malfunctioning, and the detection end of the gap detection device and the sliding door are bypassed through the LCB; at the same time, the door status indicator light control state is canceled, but the normal detection state is not sent to the gap detection device.

4. A platform door system gap detection bypass control method according to claim 3, characterized in that: After the receiving end of the gap detection device receives the normal detection status sent by the detection end, the gap detection alarm state is cancelled and the gap detection safety circuit is closed. The platform door system safety circuit is closed, and the train leaves the station normally. Alternatively, when the receiving end of the gap detection device does not receive the normal detection status sent by the detection end, the gap detection safety circuit of the corresponding circuit is bypassed through the gap detection device control panel, the platform door system safety circuit is closed, and the train leaves the station normally.

5. A platform door system gap detection bypass control method according to claim 4, characterized in that: If the detection time has not ended, when the detection end state of the gap detection device is detected to be abnormal again, the LCB state of the sliding door is reacquired; When the LCB status is in bypass status, the door status indicator light control status is cancelled; When the LCB status is in the automatic position, the door status indicator light of the corresponding sliding door is re-lit.

6. A platform door system gap detection bypass control method according to any one of claims 1 to 5, characterized in that: When bypassing the detection end of the gap detection device and the sliding door via LCB: Each time a sliding door is bypassed, the corresponding door status indicator light control status is cancelled; After bypassing all the sliding doors corresponding to the detection end of the gap detection device, bypass the detection end of the gap detection device.

7. A platform door system gap detection bypass device, characterized in that: It includes a safety circuit state detection module, a gap detection state detection module, a gap detection bypass module, a door state indicator light control module and a detection controller; The safety circuit state detection module is used to detect the state of the sliding door safety circuit of the platform door system or receive the gap detection start and stop signal sent by the detection controller; The gap detection state detection module is used to detect the state of the detection end of the gap detection device; The gap detection bypass module is used to detect the LCB state of the sliding door corresponding to the gap detection device; The door status indicator light control module is used to control the door status indicator light; The detection controller is respectively connected to the safety circuit status detection module, the gap detection status detection module, the gap detection bypass module, and the door status indicator light detection controller to execute the platform door system gap detection bypass control method described in any one of claims 1-6.

8. A platform door system gap detection bypass device according to claim 7, characterized in that: A gap detection bypass switch is also provided, and the gap detection bypass switch is used to bypass the gap detection detection end.

9. A platform door system gap detection bypass device according to claim 7 or 8, characterized in that: A safety circuit contact is also provided, which is connected in series in the safety circuit of the platform door system, and synchronously bypasses the detection end of the gap detection device, the gap detection safety circuit, the sliding door and the sliding door safety circuit through the LCB.

10. A platform door system gap detection system, each sliding door is provided with a DCU, an LCB, a safety circuit, a door status indicator light and a gap detection device, characterized in that: It also includes the platform door system gap detection bypass device as described in any one of claims 7-9.

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