CN117885766A - Platform door gap detection system and control method thereof - Google Patents
Platform door gap detection system and control method thereof Download PDFInfo
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- CN117885766A CN117885766A CN202311252476.XA CN202311252476A CN117885766A CN 117885766 A CN117885766 A CN 117885766A CN 202311252476 A CN202311252476 A CN 202311252476A CN 117885766 A CN117885766 A CN 117885766A
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Abstract
The invention discloses a platform door gap detection system and a control method thereof, wherein the system comprises a DCU, an LCB, a safety loop, a door state indicator lamp and a gap detection device, the gap detection device is started after the DCU detects that a controlled sliding door is closed, and when the gap detection device detects that no foreign matters exist, a relay contact of the safety loop of the gap detection device is kept closed, and a corresponding sliding door safety loop is closed; when foreign matters exist, the relay contacts of the safety loop of the clearance detection device are disconnected, the safety loop of the corresponding sliding door is disconnected, the whole side safety loop is not communicated, the DCU controls the door status indicator lamp of the corresponding sliding door to flash, after the foreign matters are taken out, the whole side safety loop is closed, and the train can normally go out; when the gap detection device is abnormal in action, after the corresponding sliding door is isolated through the LCB, the whole side safety loop is closed, the train can be normally discharged, the operation is simpler, and meanwhile, when the device is abnormal, the device and the corresponding sliding door can be synchronously isolated, so that the safety is higher.
Description
Technical Field
The invention belongs to the technical field of safety protection equipment, and particularly relates to a platform door gap detection system and a control method thereof.
Background
In the operation of rail traffic, a platform door system is generally provided on a platform thereof for distinguishing the platform from a track and enabling passengers to get on and off the vehicle. Because of considering the train limit in the running process of the train, the arrangement of the platform door system often needs to meet the requirement that a certain distance is reserved between the platform door system and the stopped train, so that a certain width gap exists between the platform door system and the stopped train, and a certain potential safety hazard exists in the running process of the platform door system.
In order to improve the safety of rail transit operation, besides the safety baffle is additionally arranged at the edge of the sliding door of the platform door, a common mode is to add an infrared detection, laser detection, radar detection or video detection mode to automatically judge whether foreign matters exist between the platform door system and the stop train, the gap detection system and the platform door system in the control mode are two sets of systems, the control between the systems depends on the safety loop state or the interlocking release state of the platform door system, when the detection device is abnormal, the bypass function of the device controller can only bypass the device, and at the moment, the single-gear or multi-gear sliding door corresponding to the device can operate in the state of no-gap detection, so that great potential safety hazards exist; meanwhile, the operation of the detection device is greatly different from the conventional operation of the platform door system, and when an emergency occurs on site, the risk of late time caused by the fact that the fault emergency treatment time is prolonged due to misoperation of personnel can occur.
Disclosure of Invention
In order to solve the technical problems, the invention provides a platform door gap detection system and a control method thereof.
The specific scheme of the invention is as follows:
the system comprises a platform door gap detection system, wherein each sliding door is provided with a DCU, an LCB, a safety loop, a door state indicator lamp and a gap detection device, the DCU controls the corresponding sliding door to conduct door opening and closing actions, the DCU at each sliding door also controls the gap detection device at the corresponding sliding door, state feedback of each gap detection device is transmitted to the DCU of the corresponding sliding door, and the DCU transmits the state of the gap detection device to the door state indicator lamp;
the LCB and the safety loop are both in bidirectional communication connection with the DCU, and the LCB is connected in parallel at two ends of the safety loop and used for bypassing the safety loop.
The safety loop comprises a sliding door safety loop and a gap detection device safety loop, the sliding door safety loop and the gap detection device safety loop are connected in series, the sliding door safety loop is a sliding door detection switch contact, the gap detection device safety loop comprises a gap detection relay and a gap detection relay contact, and the gap detection relay contact is connected in series with the sliding door detection switch contact.
The gap detection devices are arranged on two sides or the top of each sliding door, and gap detection control and state feedback signals of the gap detection devices output by the DCU can be performed in a switching value or serial port communication mode.
The door state indicator lamp comprises a foreign matter detection alarm indicator lamp and a sliding door opening and closing indicator lamp, and the priority of the foreign matter detection alarm indicator lamp is higher than that of the sliding door opening and closing indicator lamp.
And each sliding door is provided with a gap detection device control module, the DCU is electrically connected with the gap detection device through the gap detection device control module, and the gap detection device control module is a singlechip or a PLC.
The control method of the clearance detection system comprises the following steps,
s1): after the DCU detects that the controlled sliding door is closed, starting control authorities of a gap detection device and a gap detection relay, and feeding back detection results to the DCU and the gap detection relay by the gap detection device, wherein the detection results comprise no abnormality and abnormality, if no abnormality exists, contacts of the gap detection relay keep a closed state, a corresponding sliding door is closed in a safety loop, when all the whole side foreign matters are detected normally, the whole side safety loop is closed, and a train normally goes out of the station, if abnormality exists, the step S2 is carried out;
s2): when the gap detection device detects abnormality, the gap detection relay contacts are disconnected and kept, the corresponding sliding door self safety loop is disconnected, the whole side safety loop is not communicated, the DCU controls a door state indicator lamp of the corresponding sliding door to flash, station personnel confirms whether a foreign object exists between a platform door system and a stop train on site, if the foreign object exists, the corresponding sliding door is opened to take out the foreign object, then the sliding door is closed, and the step S1) is carried out, and if the foreign object does not exist, the step S3 is carried out;
s3): when no foreign matter is found, the gap device is judged to be abnormal, the gap detection relay contacts are opened and kept, the corresponding sliding door safety loop is opened, the whole side safety loop is not communicated, the DCU controls the door state indicator lamp of the corresponding sliding door to flash, after the corresponding sliding door is isolated by station personnel through LCB, the corresponding sliding door safety loop is closed, the whole side safety loop is closed, the train can normally go out, and the sliding door does not perform door opening and closing actions.
When the DCU receives a door closing instruction, the DCU synchronously starts a gap detection device when the DCU performs a door closing action, and when the gap detection device detects an obstacle, the DCU controls the sliding door to stop closing and automatically open, and the sliding door is closed after the obstacle disappears.
The detection duration of the gap detection and the obstacle duration can be modified by PSC software, wherein the detection duration of the gap detection is the time from the closing of the sliding door to the stopping of the gap detection device, the obstacle duration is the minimum obstacle duration, the obstacle duration is smaller than the obstacle duration, and the system does not determine that the system is a foreign object.
When the gap detection device detects the foreign matters, the DCU uploads data through the communication line, so that software alarm display and recording are realized.
The gap detection device has the functions of hardware forced triggering and program forced triggering, when the gap detection device is overhauled, the gap detection device of a single or a plurality of whole side sliding doors is triggered by a switch or software according to the requirement, and the gap detection device is always in a trigger state after the gap detection device is triggered until the gap detection device is reset by the switch or the software.
The invention discloses a platform door gap detection system and a control method thereof, which have the following beneficial effects compared with the prior art:
1. the triggering mode is triggered by the safety loop or the interlocking release state of the original platform door system, and is optimized to trigger the gap detection device corresponding to the sliding door after the single sliding door is closed, so that the detection range is more comprehensive.
2. The bypass mode is that the original bypass clearance detection device only, the sliding door can still normally open and close the door, the synchronous isolation clearance detection device and the sliding door are optimized, and the safety is higher.
3. The gap detection system is deeply combined into the platform door system, a separate gap detection host is not needed, the gap detection state becomes one of the running states of the single sliding door, and the operation is simpler.
Drawings
Fig. 1 is a schematic diagram of a system architecture.
Fig. 2 is a schematic diagram of a safety circuit.
Fig. 3 is a schematic diagram of a system architecture with a gap detection device control module.
Fig. 4 is a flowchart of the platform door gap detection control.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. It will be apparent to those skilled in the art that the described embodiments are only a part, but not all, of the implementations of the invention, and that all other embodiments, based on which those skilled in the art will come to lie within the scope of the invention without making any inventive effort.
As shown in fig. 1, in the platform door gap detection system, DCU, LCB, safety loop, door status indicator lamps and gap detection devices are disposed at each sliding door, the DCU controls the corresponding sliding door to open and close the door, the DCU at each sliding door also controls the gap detection device at the corresponding sliding door, status feedback of each gap detection device is transmitted to the DCU of the corresponding sliding door, and the DCU transmits the status of the gap detection device to the door status indicator lamps;
the LCB and the safety loop are both in bidirectional communication connection with the DCU, and the LCB is connected in parallel at two ends of the safety loop and used for bypassing the safety loop.
The DCU is a door machine controller, and the LCB is an in-situ control box.
As shown in fig. 2, the safety circuit comprises a sliding door safety circuit and a clearance detection device safety circuit, the sliding door safety circuit and the clearance detection device safety circuit are connected in series, and when any one of the safety circuits is not connected, the train cannot normally go out; the safety loop of the sliding door is a sliding door detection switch contact, the safety loop of the gap detection device comprises a gap detection relay and a gap detection relay contact, and the gap detection relay contact is connected with the sliding door detection switch contact in series.
The gap detection devices are arranged on two sides or the top of each sliding door, gap detection control output by the DCU and state feedback signals of the gap detection devices can be in a switching value or serial port communication mode, and the DCU starts the gap detection devices after detecting that the controlled sliding doors are closed.
The door status indicator lamp includes foreign matter detection alarm indicator lamp and sliding door open and shut indicator lamp, the priority of foreign matter detection alarm indicator lamp is higher than sliding door open and shut indicator lamp, in this embodiment, the status indicator lamp that corresponds sliding door department can be two pilot lamps or an pilot lamp, and when two pilot lamps, one is used for the foreign matter detection alarm, and another is used for sliding door open and shut indication, if be when an pilot lamp, then can distinguish foreign matter detection alarm and sliding door open and shut indication according to the frequency that the pilot lamp twinkle, also can distinguish foreign matter detection alarm and sliding door open and shut indication according to the colour that the pilot lamp shows.
When the sliding door is abnormal, the DCU controls the door status indicator lamp to flash, reminds station personnel of carrying out fault emergency treatment, and simultaneously uploads gap detection abnormal status data to the comprehensive monitoring.
As shown in fig. 3, each sliding door is provided with a gap detection device control module, the DCU is electrically connected with the gap detection device through the gap detection device control module, and the gap detection device control module is a single-chip microcomputer or a PLC. And the data conversion between the DCU and different gap detection devices is completed through the gap detection device control module, so that the compatibility of the system is ensured.
The gap detection device control module is used for completing the functions of closing judgment, indicator light control, gap detection control and gap detection state uploading of the sliding door and is used for realizing the function transformation of the existing line.
The gap detection device scheme at the present stage is very mature for the person skilled in the art, and the gap detection related to the invention adopts a mature technology, so that the specific gap detection process is not excessively described.
As shown in fig. 4, the control method of the gap detection system includes the steps of,
s1): after the DCU detects that the controlled sliding door is closed, starting control authorities of a gap detection device and a gap detection relay, and feeding back detection results to the DCU and the gap detection relay by the gap detection device, wherein the detection results comprise no abnormality and abnormality, if no abnormality exists, contacts of the gap detection relay keep a closed state, a corresponding sliding door is closed in a safety loop, when all the whole side foreign matters are detected normally, the whole side safety loop is closed, and a train normally goes out of the station, if abnormality exists, the step S2 is carried out;
the gap detection device can be started to detect the gap when the DCU is electrified again, the door is opened and closed remotely and the door is opened and closed manually according to whether the sliding door is closed or not, and the safety coefficient is higher.
Aiming at the platform door system adopting the photoelectric switch as the state detection of the sliding door, when the DCU detects that the self detection switch of the sliding door is closed and the state of the gap detection device is normal, the safety loop relay is controlled to be closed, and the safety loop of the sliding door is closed.
S2): when the gap detection device detects abnormality, the gap detection relay contacts are disconnected and kept, the corresponding sliding door self safety loop is disconnected, the whole side safety loop is not communicated, the DCU controls a door state indicator lamp of the corresponding sliding door to flash, station personnel confirms whether a foreign object exists between a platform door system and a stop train on site, if the foreign object exists, the corresponding sliding door is opened to take out the foreign object, then the sliding door is closed, and the step S1) is carried out, and if the foreign object does not exist, the step S3 is carried out;
s3): when no foreign matter is found, the gap device is judged to be abnormal, the gap detection relay contacts are opened and kept, the corresponding sliding door safety loop is opened, the whole side safety loop is not communicated, the DCU controls the door state indicator lamp of the corresponding sliding door to flash, after the corresponding sliding door is isolated by station personnel through LCB, the corresponding sliding door safety loop is closed, the whole side safety loop is closed, the train can normally go out, and the sliding door does not perform door opening and closing actions.
When the gap detection device detects abnormality, whether the safety loop of the sliding door is normal or not, the DCU data and the door state indicator lamp prompt that the gap detection is abnormal; when the clearance detection device detects that the safety loop of the sliding door is abnormal, the DCU data and the door state indicator lamp prompt the safety loop to be abnormal.
When the DCU receives a door closing instruction, the DCU synchronously starts a gap detection device when the DCU performs a door closing action, and when the gap detection device detects an obstacle, the DCU controls the sliding door to stop closing and automatically open, and the sliding door is closed after the obstacle disappears.
The detection duration of the gap detection and the obstacle duration can be modified by PSC software, wherein the detection duration of the gap detection is the time from the closing of the sliding door to the stopping of the gap detection device, the obstacle duration is the minimum obstacle duration, the obstacle duration is smaller than the obstacle duration, and the system does not determine that the system is a foreign object.
When the gap detection device detects the foreign matters, the DCU uploads data through the communication line, so that software alarm display and recording are realized.
The gap detection device has the functions of hardware forced triggering and program forced triggering, when the gap detection device is overhauled, the gap detection device of a single or a plurality of whole side sliding doors is triggered by a switch or software according to the requirement, and the gap detection device is always in a trigger state after the gap detection device is triggered until the gap detection device is reset by the switch or the software.
The specific working process of the platform door gap detection system is as follows:
when the platform finishes the passenger getting on or off, the sliding door and the train door are synchronously closed under the control of the signal system, and after the side sliding door DCU detects that the controlled sliding door is closed, the gap detection device is controlled to start detection.
When the clearance detection device detects no abnormality, a clearance detection normal signal is fed back to the DCU, the contacts of the sliding door clearance detection relay are kept in a closed state, after all sliding door clearance detection on the side is normal, the safety loop of the platform door system is closed, and the train can normally go out.
When the gap detection device detects abnormality, the relay contact of the safety loop of the gap detection device is disconnected and kept, the safety loop of the sliding door of the gap detection device is disconnected, the safety loop on the whole side is not communicated, the DCU controls the door status indicator lamp of the corresponding sliding door to flash, and station personnel judge whether foreign matters exist on site.
When foreign matters exist, the corresponding sliding door is opened to take out the foreign matters, then the sliding door is closed, the DCU controls the foreign matter detection device to detect the foreign matters again, when the clearance detection device detects no abnormality, the contact of the safety loop relay of the clearance detection device is closed, the safety loop of the sliding door is closed, the whole side safety loop is closed, and the train can normally go out.
When no foreign matter is found, the device can be judged to be abnormal, the relay contact of the safety loop of the clearance detection device is disconnected and kept, the safety loop of the sliding door is disconnected, the whole side safety loop is not communicated, the DCU controls the door status indicator lamp of the corresponding sliding door to flash, after the station personnel isolate the corresponding sliding door through the LCB, the LCB bypasses the safety loop of the sliding door, the safety loop of the sliding door is closed, the whole side safety loop is closed, the train can normally go out, and meanwhile, the sliding door does not respond to a remote door opening and closing instruction any more.
The whole emergency disposal process is basically consistent with the operation of the gapless detection station, the operation is simpler, and the device can be synchronously isolated from the corresponding sliding door when the device is abnormal, so that the safety is higher.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. A platform door gap detection system, characterized by: each sliding door is provided with a DCU, an LCB, a safety loop, a door state indicator lamp and a gap detection device, the DCU controls the corresponding sliding door to open and close the door, the DCU at each sliding door also controls the gap detection device at the corresponding sliding door, state feedback of each gap detection device is transmitted to the DCU of the corresponding sliding door, and the DCU transmits the state of the gap detection device to the door state indicator lamp;
the LCB and the safety loop are both in bidirectional communication connection with the DCU, and the LCB is connected in parallel at two ends of the safety loop and used for bypassing the safety loop.
2. The platform door gap detection system according to claim 1, wherein: the safety loop comprises a sliding door safety loop and a gap detection device safety loop, the sliding door safety loop and the gap detection device safety loop are connected in series, the sliding door safety loop is a sliding door detection switch contact, the gap detection device safety loop comprises a gap detection relay and a gap detection relay contact, and the gap detection relay contact is connected in series with the sliding door detection switch contact.
3. The platform door gap detection system according to claim 1, wherein: the gap detection devices are arranged on two sides or the top of each sliding door, and gap detection control and state feedback signals of the gap detection devices output by the DCU can be performed in a switching value or serial port communication mode.
4. The platform door gap detection system according to claim 1, wherein: the door state indicator lamp comprises a foreign matter detection alarm indicator lamp and a sliding door opening and closing indicator lamp, and the priority of the foreign matter detection alarm indicator lamp is higher than that of the sliding door opening and closing indicator lamp.
5. The platform door gap detection system according to claim 1, wherein: and each sliding door is provided with a gap detection device control module, the DCU is electrically connected with the gap detection device through the gap detection device control module, and the gap detection device control module is a singlechip or a PLC.
6. A control method of a gap detection system according to any one of claims 1 to 5, characterized by: comprises the following steps of the method,
s1): after the DCU detects that the controlled sliding door is closed, starting control authorities of a gap detection device and a gap detection relay, and feeding back detection results to the DCU and the gap detection relay by the gap detection device, wherein the detection results comprise no abnormality and abnormality, if no abnormality exists, contacts of the gap detection relay keep a closed state, a corresponding sliding door is closed in a safety loop, when all the whole side foreign matters are detected normally, the whole side safety loop is closed, and a train normally goes out of the station, if abnormality exists, the step S2 is carried out;
s2): when the gap detection device detects abnormality, the gap detection relay contacts are disconnected and kept, the corresponding sliding door self safety loop is disconnected, the whole side safety loop is not communicated, the DCU controls a door state indicator lamp of the corresponding sliding door to flash, station personnel confirms whether a foreign object exists between a platform door system and a stop train on site, if the foreign object exists, the corresponding sliding door is opened to take out the foreign object, then the sliding door is closed, and the step S1) is carried out, and if the foreign object does not exist, the step S3 is carried out;
s3): when no foreign matter is found, the gap device is judged to be abnormal, the gap detection relay contacts are opened and kept, the corresponding sliding door safety loop is opened, the whole side safety loop is not communicated, the DCU controls the door state indicator lamp of the corresponding sliding door to flash, after the corresponding sliding door is isolated by station personnel through LCB, the corresponding sliding door safety loop is closed, the whole side safety loop is closed, the train can normally go out, and the sliding door does not perform door opening and closing actions.
7. The control method of gap detection according to claim 6, characterized in that: when the DCU receives a door closing instruction, the DCU synchronously starts a gap detection device when the DCU performs a door closing action, and when the gap detection device detects an obstacle, the DCU controls the sliding door to stop closing and automatically open, and the sliding door is closed after the obstacle disappears.
8. The control method of gap detection according to claim 6, characterized in that: the detection duration of the gap detection and the obstacle duration can be modified by PSC software, wherein the detection duration of the gap detection is the time from the closing of the sliding door to the stopping of the gap detection device, the obstacle duration is the minimum obstacle duration, the obstacle duration is smaller than the obstacle duration, and the system does not determine that the system is a foreign object.
9. The control method of gap detection according to claim 6, characterized in that: when the gap detection device detects the foreign matters, the DCU uploads data through the communication line, so that software alarm display and recording are realized.
10. The control method of gap detection according to claim 6, characterized in that: the gap detection device has the functions of hardware forced triggering and program forced triggering, when the gap detection device is overhauled, the gap detection device of a single or a plurality of whole side sliding doors is triggered by a switch or software according to the requirement, and the gap detection device is always in a trigger state after the gap detection device is triggered until the gap detection device is reset by the switch or the software.
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| CN202311252476.XA CN117885766A (en) | 2023-09-26 | 2023-09-26 | Platform door gap detection system and control method thereof |
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