NL2025618A - Rail transit platform screen door system and use method thereof - Google Patents
Rail transit platform screen door system and use method thereof Download PDFInfo
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- NL2025618A NL2025618A NL2025618A NL2025618A NL2025618A NL 2025618 A NL2025618 A NL 2025618A NL 2025618 A NL2025618 A NL 2025618A NL 2025618 A NL2025618 A NL 2025618A NL 2025618 A NL2025618 A NL 2025618A
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- screen door
- train
- passenger flow
- data
- platform
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012790 confirmation Methods 0.000 claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims description 40
- 238000006073 displacement reaction Methods 0.000 claims description 36
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 210000002310 elbow joint Anatomy 0.000 claims description 6
- 210000000323 shoulder joint Anatomy 0.000 claims description 6
- 210000003857 wrist joint Anatomy 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000012217 deletion Methods 0.000 claims description 3
- 230000037430 deletion Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 5
- 230000001276 controlling effect Effects 0.000 claims 3
- 238000012546 transfer Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B1/00—General arrangement of stations, platforms, or sidings; Railway networks; Rail vehicle marshalling systems
- B61B1/02—General arrangement of stations and platforms including protection devices for the passengers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0072—On-board train data handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/04—Automatic systems, e.g. controlled by train; Change-over to manual control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/40—Handling position reports or trackside vehicle data
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Platform Screen Doors And Railroad Systems (AREA)
Abstract
The present invention relates to a rail transit Platform Screen Door system and a use method thereof, belongs to the technical field of screen doors, and solves the problem 5 that the screen door system in the prior art cannot count the passenger flow volume and cannot accurately guarantee the safety of passengers and trains. The system includes: a carriage passenger flow counter, configured to collect passenger stock data of a carriage before a screen door opens, a stereoscopic vision passenger flow counter, configured to collect passenger on-off flow data during a period from opening of the screen door to 10 readiness to close, and identify whether a person or an object exists in a screen door region at a moment when the screen door is ready to close to obtain passenger flow data and an identification result; and a screen door controller, configured to control the screen door to open after a train arrives at a station to enter an entry convenience counting mode, determine whether the train is overloaded according to the passenger flow data 15 and in combination with the stock data, enter a safety confirmation mode at a moment when the screen door is ready to close if the vehicle is not overloaded, determine whether the screen door region is safe according to the identification result, send an alarm if the screen door region is not safe, and control the screen door to close after the screen door region is safe.
Description
-1-
[0001] The present invention relates to the technical field of screen doors, and in particular to a rail transit Platform Screen Door system and a use method thereof.
[0002] With the rapid development of rail transit and the continuous improvement of trolleybus technologies, the requirements of users on convenience and safety of the traffic are increasingly high. The rail transit Platform Screen Door (PSD) serves as an important element in the rail transit operation systems. It can guarantee the safety of passengers and trains, and can further reduce the noise during operation of the trains and the influences of the airflow on platforms, thus achieving the effects of safety, energy conservation, environmental protection, etc.
[0003] Generally, the existing rail transit screen door cannot count the passenger flow data effectively. They cannot monitor overload conditions of the trains effectively, cannot be fully adapted to the peak travel of the passengers who wait to get on the trains, and further cannot make an analysis on the travel habits of the passengers for the rail transit companies to provide a data basis for the improvement of the traffic conditions.
[0004] Meanwhile, most of the existing rail transit screen door systems use infrared detectors as safety protection devices; and the infrared emitters and the infrared receivers are respectively installed on and under the screen door. As is known toall, the infrared detectors are susceptible to the environment. For example, when the environmental temperatures are close to the temperatures of human bodies, the detectors are obviously decreased in detection sensitivity, and have short-time failure sometimes, that is, persons or objects exist in the spaces (screen door regions) between the screen doors and the vehicle doors in such a case, and cannot be detected by the
22.
infrared detectors possibly. In case of an error of the drivers or the station staffs, it is very easy to cause the safety accidents.
[0005] In view of the above analysis, an objective of the embodiments of the present invention is to provide a rail transit Platform Screen Door system and a use method thereof, to solve the problem that the existing rail transit screen door system cannot count the passenger flow volume and cannot accurately guarantee the safety of passengers and trains.
[0006] According to one aspect, the embodiments of the present invention provide a rail transit Platform Screen Door system, including:
[0007] a carriage passenger flow counter, configured to collect passenger stock data of a carriage before a screen door opens, and send the passenger stock data to a screen door controller;
[0008] a stereoscopic vision passenger flow counter, configured to collect passenger on-off flow data during a period from opening of the screen door to readiness to close, identify whether a person or an object exists in a screen door region at a moment when the screen door is ready to close, and send obtained passenger flow data and identification result to the screen door controller; and
[0009] the screen door controller, configured to control the screen door to open after a train arrives at a station to enter an entry convenience counting mode, determine whether the train 1s overloaded according to the passenger flow data and in combination with the stock data, send an alarm if the train is overloaded till the train is not overloaded, enter a safety confirmation mode at a moment when the screen door is ready to close, determine whether the screen door region is safe according to the identification result, send an alarm if the screen door region is not safe, and control the screen door to close after the screen door region is safe.
[0010] The above technical solutions have the following beneficial effects: the rail transit Platform Screen Door system has a passenger flow counting function; and
3. after the train enters the station, two working modes, namely, an entry convenience counting mode and a safety counting mode, are provided. In the entry convenience counting mode, the carriage passenger flow counter counts the passenger stock data in the carriage and sends the passenger stock data to the screen door controller; and then, the stereoscopic vision passenger flow counter counts the passenger on-off flow data and also sends the passenger on-off flow data to the screen door controller, and enters the safety confirmation mode after confirming that the train is not overloaded; and in the safety confirmation mode, the stereoscopic vision passenger flow counter monitors the screen door region (i.e, a gap between the screen door and the train); and in case of the person or the object, the screen door controller sends out the alarm to remind the passengers of getting away from the dangerous region and notify the staffs, thus ensuring the safety of passengers and trains. The system alleviates the working pressure of the staffs greatly, improves the traveling efficiency of the passengers, and may provide a large amount of data for the rail transit companies to make an analysis on the travel habits of the passengers. As the screen door is not closed until the stereoscopic vision passenger flow counter confirms that the train is not overloaded and no person or no object exists in the screen door region, the safety of passengers and trains is fully guaranteed, the risk of safety accidents is lowered and the user experience is improved.
[0011] Based on a further improvement of the above system, the rail transit Platform Screen Door system further includes:
[0012] a screen door switch detection unit, configured to detect time when the train arrives at each platform, and send the time to a central control system; and
[0013] the central control system, configured to obtain opening time of the screen door at each platform according to the time when the train arrives at each platform and preset departure time, and send the opening time and a full load capacity of each carriage of the train to the screen door controller of each carriage of the train, so that the screen door controller controls the screen door to open at the opening time, and compares the full load capacity with a sum of the passenger flow data and the
4- stock data to determine whether the train is overloaded.
[0014] The above further improvement solutions have the following beneficial effects: the screen door switch detection unit detects the time when the train arrives at each platform; and the central control system sends the opening time of the screen door and the full load capacity of each carriage to the screen door controller. While guaranteeing the safety of passengers and trains, the system counts the time when the train arrives at each platform, thereby improving the efficiency that the subway train enters and exits the station.
[0015] Further, the stereoscopic vision passenger flow counter is disposed in the screen door region, and includes:
[0016] a counter movement unit, configured to drive the stereoscopic vision passenger flow counter to move to a platform pedestrian side after opening of the screen door and before entry of the entry convenience counting mode, and drive the stereoscopic vision passenger flow counter to move to a platform track side after end of the entry convenience counting mode and before entry of the safety confirmation mode;
[0017] a camera, configured to collect an image of the platform pedestrian side in the entry convenience counting mode after the screen door opens, collect an image of the screen door region in the carriage of the train in the safety confirmation mode, and send the image of the pedestrian side and the image of the screen door region to a data processor; and
[0018] the data processor, configured to identify a human shape and an object in the image of the pedestrian side and the image of the screen door region, obtain passenger on-off flow data by counting, identify whether the person or the object exists in the screen door region in the safety confirmation mode, and send the obtained passenger flow data and identification result to the screen door controller.
[0019] The above further improvement solutions have the following beneficial effects: before the train arrives, the screen door is closed, and the stereoscopic vision passenger flow counter is disposed in the screen door region (the gap between the
-5.
screen door and the train) of the screen door; and after the train arrives, the screen door is opened, the counter movement unit drives the camera to respectively move to the positions suitable for collecting the images of the platform pedestrian side and the screen door region for image collection; and then, the data processor identifies the images to obtain the accurate passenger flow data and identification result; and thus, the safety and reliability of the stereoscopic vision passenger flow counter in use are improved.
[0020] Further, the screen door controller includes:
[0021] a passenger carrying data obtaining module, configured to calculate a current passenger capacity of the carriage according to the received passenger flow data and in combination with the stock data, and send the passenger capacity to an analysis control module; and
[0022] the analysis control module, configured to control the screen door by executing the following processes:
[0023] S1. controlling the screen door to open at the opening time after the train arrives at the station, sending a first control instruction to the counter movement unit, and controlling the counter movement unit via the first control instruction to drive the camera to move from the screen door region to a standard position at the platform pedestrian side;
[0024] S2. obtaining, by using the entry convenience counting mode, the current passenger capacity of the carriage obtained by the passenger carrying data obtaining module, comparing with the full load capacity according to the current passenger capacity of the carriage to determine whether the train is overloaded, and determining that the train is overloaded and sending a first alarm if the former is greater than the full load capacity till the train is not overloaded;
[0025] S3. after the train is not overloaded, controlling the stereoscopic vision passenger flow counter to move from the standard position to the screen door region at the platform track side; and
[0026] S4. using the safety confirmation mode, determining whether the screen
-6- door region is safe according to the identification result, if a person or an object exists in the screen door region at a moment when the screen door is ready to close, determining that the screen door region is not safe and sending a second alarm, and after the train is safe, controlling the screen door to close.
[0027] The above further improvement solutions have the following beneficial effects: the passenger carrying data obtaining module calculates the current passenger capacity of the carriage; and the analysis control module determines, via the current passenger capacity of the carriage, whether the train is overloaded, enters the safety confirmation mode after the train is not overloaded, controls the screen door to close correctly after the screen door region is safe, and sends an alarm signal timely to remind the passengers of paying attention to the on-time travel plan and route; and thus, the stability of the whole system is improved.
[0028] Further, the screen door controller further includes:
[0029] a communication module, configured to receive, via a wireless network, the opening time of the screen door at each platform and the full load capacity of each carriage of the train that are sent by the central control system, and transmit the opening time and the full load capacity to the analysis control module; and
[0030] an early-warning module, configured to obtain the first alarm and the second alarm, and send different real-time early-warning signals according to the alarms, the real-time early-warning signals including at least one of a sound early warning, a light early warning, an image early warning or a text early warning.
[0031] The above further improvement solutions have the following beneficial effects: the wireless interconnection with the central control system may be implemented via the communication module; and through the early warning module, the system may intelligently remind the passengers or the staffs of taking an action to prevent the overloading of the carriage or the safety accident; and thus, the safety of the system is improved to a great extent.
[0032] Further, the counter movement unit includes a position sensor, a controller, a drive unit, and an execution mechanism; first and second input ends of the
7.
controller are respectively connected to an output end of the analysis control module and an output end of the displacement sensor, and an output end of the controller is connected to the execution mechanism via the drive unit;
[0033] the position sensor is configured to detect actual displacement and angle that a current position of the camera is deviated from a standard position, and transmit the actual displacement and angle to the controller;
[0034] the controller is configured to control, upon the reception of the first control instruction, the execution mechanism via the drive unit to drive the camera to move from the screen door region to the standard position at the platform pedestrian side, then determine, according to the actual displacement and angle of the current position of the camera deviated from the standard position that are obtained by the position sensor, whether a position of the camera needs to be adjusted, determine that the position of the camera does not need to be adjusted if the displacement and the angle are both 0, or otherwise, reversely control the execution mechanism via the drive unit according to the displacement and the angle to drive the camera to be adjusted to the standard position, control, upon the reception of a second instruction, the execution mechanism via the drive unit to drive the camera to move from the standard position at the platform pedestrian side to the screen door region, and repeat the above determination and adjustment; and
[0035] the drive unit is configured to drive, according to control of the controller, the execution mechanism to drive the camera to move, thus changing the position.
[0036] The above further improvement solutions have the following beneficial effects: through the position sensor, controller, drive unit and execution mechanism, the counter movement unit can drive the camera at a high precision to change various positions for photographing, so that the camera meets various photographing requirements to prevent the deflection; and thus, the reliability of the system control is improved.
[0037] Further, the execution mechanism uses a form of a mechanical arm, and
-8- sequentially includes a machine seat, a shoulder joint, a big arm, an elbow joint, a small arm, a wrist joint and a handle;
[0038] the machine seat is disposed on a top of the screen door, and configured to provide fixation and support for the stereoscopic vision passenger flow counter;
[0039] the shoulder joint is configured to connect the machine seat and the big arm, and provide a force bearing point for movement of the big arm;
[0040] the elbow joint is configured to connect the big arm and the small arm, and provide a force bearing point for movement of the small arm;
[0041] the wrist joint is configured to connect the small arm and the handle, and provide a force bearing point for movement of the handle; and
[0042] the handle is configured to fix the camera.
[0043] The above further improvement solutions have the following beneficial effects: the execution mechanism uses the form of the mechanical arm, so the system is suitable for various environments to move to a specified position (a safe position). For example, in case of an obstacle, the system may bypass the obstacle; and thus, the stability and precision in the movement process are improved.
[0044] According to another aspect, the embodiments of the present invention provide a use method of the rail transit Platform Screen Door system, including the following steps:
[0045] collecting, by a carriage passenger flow counter, passenger stock data of a carriage at a preset moment after a train arrives at a station and before a screen door opens, and sending the passenger stock data to a screen door controller;
[0046] controlling, by the screen door controller, the screen door to open, so that a stereoscopic vision passenger flow counter moves from a screen door region to a standard position at a platform pedestrian side;
[0047] entering an entry convenience counting mode, obtaining passenger on-off real-time flow data via the stereoscopic vision passenger flow counter, comparing the passenger flow data with a full load capacity of the carriage in combination with the stock data to determine whether the train is overloaded, and
<9. sending a first alarm if the train is overloaded till the train is not overloaded;
[0048] moving the stereoscopic vision passenger flow counter from the standard position at the platform pedestrian side to a preset position in a platform track screen door region; and
[0049] entering a safety confirmation mode, obtaining, via the stereoscopic vision passenger flow counter, a moment when the screen door is ready to close to identify whether a person or an object exists in the screen door region, determining whether the screen door region is safe according to an obtained identification result, determining that the screen door region is not safe if the identification result is that the person or the object exists in the screen door region and sending an alarm, and controlling the screen door to close after the train is safe.
[0050] The above solutions have the following beneficial effects: the rail transit Platform Screen Door system has a passenger flow counting function; and after the train enters the station, two working modes, namely, an entry convenience counting mode and a safety counting mode, are provided. In the entry convenience counting mode, the carriage passenger flow counter counts the passenger stock data in the carriage and sends the passenger stock data to the screen door controller; and then, the stereoscopic vision passenger flow counter counts the passenger on-off flow data and also sends the passenger on-off flow data to the screen door controller, and enters the safety confirmation mode after confirming that the train is not overloaded; and in the safety confirmation mode, the stereoscopic vision passenger flow counter monitors the screen door region (i.e, a gap between the screen door and the train); and in case of the person or the object, the screen door controller sends out the alarm to remind the passengers of getting away from the dangerous region and notify the staffs, thus ensuring the safety of passengers and trains. The system alleviates the working pressure of the staffs greatly, improves the traveling efficiency of the passengers, and may provide a large amount of data for the rail transit companies to make an analysis on the travel habits of the passengers. As the screen door is not closed until the stereoscopic vision passenger flow counter confirms that the train is not overloaded
-10- and no person or no object exists in the screen door region, the safety of passengers and trains is fully guaranteed, the risk of safety accidents is lowered and the user experience is improved.
[0051] Based on a further improvement of the method, the controlling, by the screen door controller, the screen door to open, so that a stereoscopic vision passenger flow counter moves from a screen door region to a standard position at a platform pedestrian side further includes the following steps:
[0052] within preset opening time after the train arrives at the station, controlling, by the screen door controller, the screen door to open at opening time, and sending a first control instruction to a counter movement unit;
[0053] according to the first control instruction, driving, by the counter movement unit, a camera via an execution mechanism to move to a preset position of the platform pedestrian side;
[0054] collecting, via a position sensor, actual displacement and angle that a current position of the camera is deviated from a standard position; and
[0055] determining, according to the actual displacement and angle, whether a position of the camera needs to be adjusted, determining that the position of the camera does not need to be adjusted if the displacement and the angle are both 0, or otherwise, reversely controlling, via a drive unit according to the displacement and the angle, the execution mechanism to drive the camera to be adjusted to the standard position.
[0056] The above further improvement solutions have the following beneficial effects: with the adoption of displacement and angle feedback information, the execution mechanism is controlled to drive the camera to move to a position where is the best to photograph the image, so that the deflection can be prevented, the movement precision is improved, and the error is reduced.
[0057] Further, the comparing the passenger flow data with a full load capacity of the carriage in combination with the stock data to determine whether the train is overloaded includes the following steps:
[0058] collecting the passenger flow data and the stock data for multiple times,
-11- deleting passenger flow data and stock data that are obviously deviated from other values, and seeking for an average of data obtained after deletion to serve as measured passenger flow data and stock data;
[0059] performing adding operation on the obtained passenger flow data and stock data to obtain a current passenger flow volume of the carriage; and
[0060] comparing the current passenger flow volume of the carriage with the full load capacity of the carriage to determine whether the train is overloaded; if the former is greater than the latter, determining that the train is overloaded; or otherwise, the train is not overloaded.
[0061] The above further improvement solutions have the following beneficial effects: the passenger flow data and the stock data are statistically optimized; and through a large number of tests, it 1s proved that the system can effectively improve the data accuracy and reduce the error.
[0062] In the present invention, the above technical solutions may further be combined to each other to implement more preferred combined solutions. Other characteristics and advantages of the present invention will be elaborated in the subsequent description; and some advantages may become apparent from the description, or may be understood by implementing the present invention. The objective and other advantages of the present invention may be implemented and obtained from the content particularly specified in the description and accompanying drawings.
[0063] The accompanying drawings are merely used to illustrate the specific embodiments but are not considered as a limit to the present invention. Throughout the accompanying drawings, the same reference symbol indicates the same component.
[0064] Fig. 1 is a compositional schematic diagram of a rail transit Platform Screen Door system according to Embodiment 1 of the present invention.
[0065] Fig. 2 is a compositional schematic diagram of a stereoscopic vision
-12- passenger flow counter according to Embodiment 2 of the present invention.
[0066] Fig. 3 is a compositional schematic diagram of a screen door controller according to Embodiment 2 of the present invention.
[0067] Fig. 4 is a compositional schematic diagram of a counter movement unit according to Embodiment 2 of the present invention.
[0068] Fig. 5 is a compositional schematic diagram of an execution mechanism according to Embodiment 2 of the present invention.
[0069] In the figures:
[0070] 1-machine seat, 2-shoulder joint, 3-big arm, 4-elbow joint, S-small arm, 6-wrist joint, and
[0071] 7-handle.
[0072] The preferred embodiments of the present invention are described below in detail in combination with the accompanying drawings. The accompanying drawings form a part of the present invention, serve to explain the principle of the present invention together with the embodiments of the present invention, and are not intended to limit the scope of the present invention.
[0073] Embodiment 1
[0074] A specific embodiment of the present invention discloses a rail transit Platform Screen Door system suitable for a subway or a light rail. As shown in Fig. 1, the rail transit Platform Screen Door system includes a carriage passenger flow counter, a stereoscopic vision passenger flow counter and a screen door controller. An output end of the carriage passenger flow counter and an output end of the stereoscopic vision passenger flow counter are respectively connected to an input end of the screen door controller.
[0075] The carriage passenger flow counter is configured to collect passenger stock data of a carriage before a screen door opens, and send the passenger stock data to a screen door controller.
-13-
[0076] The stereoscopic vision passenger flow counter is configured to collect passenger on-off flow data during a period from opening of the screen door to readiness to close, identify whether a person or an object exists in a screen door region at a moment when the screen door is ready to close, and send obtained passenger flow data and identification result to the screen door controller.
[0077] The screen door controller is configured to control the screen door to open after a train arrives at a station to enter an entry convenience counting mode, determine whether the train is overloaded according to the passenger flow data and in combination with the stock data, send an alarm if the train is overloaded till the train is not overloaded, enter a safety confirmation mode at a moment when the screen door is ready to close, determine whether the screen door region is safe according to the identification result, send an alarm if the screen door region is not safe, and control the screen door to close after the screen door region is safe.
[0078] Optionally, the carriage passenger flow counter is respectively disposed in each carriage of the train, and may be disposed on a top or a sidewall of the carriage. The stereoscopic vision passenger flow counter is disposed at a preset position of the screen door region at the platform pedestrian side, and may be specifically disposed on a top, a bottom or a sidewall of the platform in the screen door region.
[0079] Compared with the prior art, the rail transit Platform Screen Door system provided by this embodiment has a passenger flow counting function; and after the train enters the station, two working modes, namely, an entry convenience counting mode and a safety counting mode, are provided. In the entry convenience counting mode, the carriage passenger flow counter counts the passenger stock data in the carriage and sends the passenger stock data to the screen door controller; and then, the stereoscopic vision passenger flow counter counts the passenger on-off flow data and also sends the passenger on-off flow data to the screen door controller, and enters the safety confirmation mode after confirming that the train is not overloaded; and in the safety confirmation mode, the stereoscopic vision passenger flow counter monitors the screen door region (i.e., a gap between the screen door and the train); and in case of the
-14- person or the object, the screen door controller sends out the alarm to remind the passengers of getting away from the dangerous region and notify the staffs, thus ensuring the safety of passengers and trains. The system alleviates the working pressure of the staffs greatly, improves the traveling efficiency of the passengers, and may provide a large amount of data for the rail transit companies to make an analysis on the travel habits of the passengers. As the screen door is not closed until the stereoscopic vision passenger flow counter confirms that no person or no object exists in the screen door region, the safety of passengers and trains is fully guaranteed, the risk of safety accidents is lowered and the user experience is improved.
[0080] Embodiment 2
[0081] With improvement on the basis of Embodiment 1, the carriage passenger flow counter may use the existing 3D MLI sensor to serve as the high-precision passenger flow counter. The counter can identify the number of dense crowds reliably without omission or addition.
[0082] Preferably, the rail transit Platform Screen Door system further includes a screen door switch detection unit and a central control system that are connected sequentially.
[0083] The screen door switch detection unit is configured to detect time when the train arrives at each platform, and send the time to the central control system.
Exemplarily, the screen door switch detection unit may be implemented by the use of a monitoring device (such as a camera) disposed on the platform.
[0084] The central control system is configured to obtain opening time (and closing time) of the screen door at each platform according to the time when the train arrives at each platform and preset departure time, and send the opening time and a full load capacity of each carriage of the train to the screen door controller of each carriage of the train, so that the screen door controller controls the screen door to open at the opening time, and compares the full load capacity with a sum of the passenger flow data and the stock data to determine whether the train is overloaded. The commander inputs the preset departure time to the central control system for commanding, so as to
-15- schedule each route. Exemplarily, the opening time t may be calculated according to the following formula:
[0085] t=t + f(t, hb) (1)
[0086] In the formula, the ti denotes the time when the train arrives at the platform, the t2 denotes the preset departure time, and the function f() may be selected according to the specialist experience.
[0087] Preferably, the stereoscopic vision passenger flow counter further includes a camera, a counter movement unit and a data processor that are connected sequentially, as shown in Fig. 2.
[0088] The counter movement unit is configured to drive the stereoscopic vision passenger flow counter to move to a platform pedestrian side after opening of the screen door and before entry of the entry convenience counting mode, and drive the stereoscopic vision passenger flow counter to move to a platform track side after end of the entry convenience counting mode and before entry of the safety confirmation mode.
[0089] The camera is configured to collect an image of the platform pedestrian side in the entry convenience counting mode after the screen door opens, collect an image of the screen door region in the carriage of the train in the safety confirmation mode, and send the image of the pedestrian side and the image of the screen door region to a data processor. Exemplary, the camera may use the existing Hikvision iDS-2CD6810F/C.
[0090] The data processor is configured to identify a human shape and an object in the image of the pedestrian side and the image of the screen door region, obtain passenger on-off flow data by counting, identify whether the person or the object exists in the screen door region in the safety confirmation mode, and send the obtained passenger flow data and identification result to the screen door controller.
[0091] Preferably, the screen door controller further includes a passenger carrying data obtaining module and an analysis control module, as shown in Fig. 3. The functions of the passenger carrying data obtaining module and the analysis control
-16- module may be implemented by means of software programming.
[0092] The passenger carrying data obtaining module is configured to calculate a current passenger capacity of the carriage according to the received passenger flow data and in combination with the stock data, and send the passenger capacity to the analysis control module.
[0093] The analysis control module is configured to control the screen door by executing the following processes:
[0094] S1. Control the screen door to open at the opening time after the train arrives at the station, send a first control instruction to the counter movement unit, and control the counter movement unit via the first control instruction to drive the camera to move from the screen door region to a standard position at the platform pedestrian side.
[0095] S2. Obtain, by using the entry convenience counting mode, the current passenger capacity of the carriage obtained by the passenger carrying data obtaining module, compare with the full load capacity according to the current passenger capacity of the carriage to determine whether the train is overloaded, and determine that the train is overloaded and send a first alarm if the former is greater than the full load capacity till the train is not overloaded.
[0096] S3. After the train is not overloaded, control the stereoscopic vision passenger flow counter to move from the standard position to the screen door region at the platform track side.
[0097] S4. Use the safety confirmation mode, determine whether the screen door region is safe according to the identification result, if a person or an object exists in the screen door region at a moment when the screen door is ready to close, determine that the screen door region is not safe and sending a second alarm, and after the train is safe, control the screen door to close.
[0098] Preferably, the screen door controller further includes a communication module and an early warning module, as shown in Fig. 3. An output end of the communication module is connected to an input end of the analysis control module,
-17- and a data output end of the analysis control module is connected to an input end of the early warning module.
[0099] The communication module is configured to receive, via a wireless network, the opening time of the screen door at each platform and the full load capacity of each carriage of the train that are sent by the central control system, and transmit the opening time and the full load capacity to the analysis control module.
[00100] The early-warning module is configured to obtain the first alarm and the second alarm, and send different real-time early-warning signals according to the alarms, the real-time early-warning signals including at least one of a sound early warning, a light early warning, an image early warning or a text early warning.
[00101] Preferably, as shown in Fig. 4, the counter movement unit includes: a position sensor, a controller, a drive unit and an execution mechanism. First and second input ends of the controller are respectively connected to an output end of the analysis control module and an output end of the displacement sensor, and an output end of the controller is connected to the execution mechanism via the drive unit.
[00102] The position sensor is configured to detect actual displacement and angle that a current position of the camera is deviated from a standard position, and transmit the actual displacement and angle to the controller.
[00103] The controller is configured to control, upon the reception of the first control instruction, the execution mechanism via the drive unit to drive the camera to move from the screen door region to the standard position at the platform pedestrian side, then determine, according to the actual displacement and angle of the current position of the camera deviated from the standard position that are obtained by the position sensor, whether a position of the camera needs to be adjusted, determine that the position of the camera does not need to be adjusted if the displacement and the angle are both 0, or otherwise, reversely control the execution mechanism via the drive unit according to the displacement and the angle to drive the camera to be adjusted to the standard position, control, upon the reception of a second instruction, the execution mechanism via the drive unit to drive the camera to move from the standard position at
-18- the platform pedestrian side to the screen door region, and repeat the above determination and adjustment.
[00104] The drive unit is configured to drive, according to control of the controller, the execution mechanism to drive the camera to move, thus changing the position.
[00105] Preferably, the execution mechanism may use a form of a mechanical arm, and sequentially includes a machine seat 1, a shoulder joint 2, a big arm 3, an elbow joint 4, a small arm 5, a wrist joint 6 and a handle 7, as shown in Fig. 5.
[00106] The machine seat 1 is disposed on a top of the screen door, and configured to provide fixation and support for the stereoscopic vision passenger flow counter.
[00107] The shoulder joint 2 is configured to connect the machine seat 1 and the big arm 3, and provide a force bearing point for movement of the big arm 3.
[00108] The elbow joint 4 is configured to connect the big arm 3 and the small arm 5, and provide a force bearing point for movement of the small arm 5.
[00109] The wrist joint 6 is configured to connect the small arm 5 and the handle 7, and provide a force bearing point for movement of the handle 7.
[00110] The handle 7 is configured to fix the camera.
[00111] Compared with Embodiment 1, the system in this embodiment uses the screen door switch detection unit to detect the time when the train arrives at each platform; and the central control system sends the opening time of the screen door that is calculated according to the time when the train arrives at the platform and the full load capacity of each carriage to the screen door controller. The screen door controller controls the screen door to open at the opening time, then controls the high-precision counter movement unit to move the camera at a high precision via displacement and angle feedback to a position where is the best to collect the image for data collection, and closes the screen door till determining that the train is not overloaded and confirming that the screen door region is safe. The system fully guarantees the safety of passengers and trains, and thus improves the safety, stability and reliability of the
-19- screen door system.
[00112] Embodiment 3
[00113] The present invention further discloses a use method of the rail transit Platform Screen Door system in Embodiment 1, including the following steps:
[00114] SSI. A carriage passenger flow counter collects passenger stock data of a carriage at a preset moment after a train arrives at a station and before a screen door opens, and sending the passenger stock data to a screen door controller.
[00115] SS2. The screen door controller controls the screen door to open, so that a stereoscopic vision passenger flow counter moves from a screen door region to a standard position at a platform pedestrian side.
[00116] SS3. The screen door controller enters an entry convenience counting mode, obtains passenger on-off real-time flow data via the stereoscopic vision passenger flow counter, compares the passenger flow data with a full load capacity of the carriage in combination with the stock data to determine whether the train is overloaded, and sends an alarm if the train is overloaded till the train is not overloaded.
[00117] SS4. The stereoscopic vision passenger flow counter moves from the standard position at the platform pedestrian side to a preset position in a platform track screen door region.
[00118] SS5. The screen door controller enters a safety confirmation mode, obtains, via the stereoscopic vision passenger flow counter, a moment when the screen door is ready to close to identify whether a person or an object exists in the screen door region, determines whether the screen door region is safe according to an obtained identification result, determines that the screen door region is not safe if the identification result is that the person or the object exists in the screen door region and sends an alarm, and controls the screen door to close after the train is safe.
[00119] Embodiment 4
[00120] With optimization on the basis of Embodiment 3, the present invention further discloses a use method of the rail transit Platform Screen Door system in Embodiment 2. The above step SS2 further includes the following steps.
-20-
[00121] SS21. Within preset opening time after the train arrives at the station, the screen door controller controls the screen door to open at the opening time, and sends a first control instruction to a counter movement unit.
[00122] S822. According to the first control instruction, the counter movement unit drives a camera via an execution mechanism to move to a preset position of the platform pedestrian side.
[00123] SS23. The counter movement unit collects, via a position sensor, actual displacement and angle that a current position of the camera is deviated from a standard position.
[00124] SS24. The counter movement unit determines, according to the actual displacement and angle, whether a position of the camera needs to be adjusted, determines that the position of the camera does not need to be adjusted if the displacement and the angle are both 0, or otherwise, reversely controls, via a drive unit according to the displacement and the angle, the execution mechanism to drive the camera to be adjusted to the standard position.
[00125] Preferably, the above step SS4 further includes the following steps:
[00126] SS41. The screen door controller sends a second control instruction to the counter movement unit.
[00127] SS42. According to the second control instruction, the counter movement unit drives the camera via the execution mechanism to move to the preset position of the platform pedestrian side.
[00128] SS23. The counter movement unit collects, via the position sensor, the actual displacement and angle that the current position of the camera is deviated from the standard position.
[00129] SS44. The counter movement unit determines, according to the actual displacement and angle, whether the position of the camera needs to be adjusted, determines that the position of the camera does not need to be adjusted if the displacement and the angle are both 0, or otherwise, reversely controls, via the drive unit according to the displacement and the angle, the execution mechanism to drive the
21- camera to be adjusted to the standard position.
[00130] Preferably, in the step SS3, comparing the passenger flow data with the full load capacity of the carriage in combination with the stock data to determine whether the train is overloaded further includes the following steps:
[00131] SS31. Collect the passenger flow data and the stock data for multiple times, delete passenger flow data and stock data that are obviously deviated from other values, and seek for an average of data obtained after deletion to serve as measured passenger flow data OQ, and stock data P , the i denoting an i-th carriage of the train.
[00132] SS32. Perform adding operation on the obtained passenger flow data OQ, and stock data P,
[00133] R=F+0, (2)
[00134] to obtain a current passenger flow volume R, of the carriage.
[00135] SS33. Compare the current passenger flow volume R, of the carriage with the full load capacity IR | of the carriage to determine whether the train is overloaded; if the former is greater than the latter, determine that the train is overloaded; or otherwise, the train is not overloaded.
[00136] A person skilled in the art may know that all or part of the steps of the methods in the above embodiments may be implemented by instructing related hardware through a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a magnetic disk, an optical disc, a Read-Only Memory (ROM) or a Random Access Memory (RAM).
[00137] The above is only the preferred specific implementation manners of the present invention and not intended to limit the scope of protection of the present invention. Any variations or replacements apparent to the person skilled in the art within the technical scope disclosed by the present invention shall fall within the scope of protection of the present invention.
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| CN201910680614.1A CN110395271B (en) | 2019-07-26 | 2019-07-26 | A rail transit platform screen door system and using method thereof |
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| CN112124379B (en) * | 2020-09-29 | 2022-03-15 | 合肥工业大学 | A platform guidance method based on subway passenger flow analysis |
| CN113183989B (en) * | 2021-03-18 | 2023-07-18 | 浙江警察学院 | a station system |
| JP7675369B2 (en) * | 2021-04-12 | 2025-05-13 | パナソニックＩｐマネジメント株式会社 | Surveillance device and surveillance system |
| EP4519147A4 (en) * | 2022-06-09 | 2026-02-25 | Tridonic Gmbh & Co Kg | SYSTEM FOR CONTROLLING A LIGHTING DEVICE, PREDICTION DEVICE, CONTROL AND METHOD FOR IT |
| CN117125110B (en) * | 2023-08-01 | 2026-02-03 | 中建三局集团有限公司 | Full-automatic driving method, system, medium and equipment based on intelligent station |
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| EP2117901A1 (en) * | 2006-09-18 | 2009-11-18 | Knorr-Bremse Rail Systems (UK) Limited | Platform screen door |
| EP2778014A1 (en) * | 2013-03-15 | 2014-09-17 | ALSTOM Transport SA | Method for controlling traffic along an automatic subway line and related system |
| WO2018096371A1 (en) * | 2016-11-28 | 2018-05-31 | University Of Lancaster | Passenger transport monitoring system |
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| CN201120890Y (en) * | 2007-11-26 | 2008-09-24 | 陈代 | Overload alarming control device for underground carriage |
| CN201882010U (en) * | 2010-12-03 | 2011-06-29 | 山东理工大学 | Anti-clamping and anti-overload control device of bus |
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| CN206696862U (en) * | 2017-03-22 | 2017-12-01 | 西南交通大学 | Subway number identifies and delivery system |
| CN207875674U (en) * | 2018-01-10 | 2018-09-18 | 中车青岛四方机车车辆股份有限公司 | A kind of overload warning system of rail vehicle and station information linkage |
| CN109977927A (en) * | 2019-04-25 | 2019-07-05 | 苏州雷格特智能设备股份有限公司 | A kind of train passenger crowding early warning system |
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|---|---|---|---|---|
| EP2117901A1 (en) * | 2006-09-18 | 2009-11-18 | Knorr-Bremse Rail Systems (UK) Limited | Platform screen door |
| EP2778014A1 (en) * | 2013-03-15 | 2014-09-17 | ALSTOM Transport SA | Method for controlling traffic along an automatic subway line and related system |
| WO2018096371A1 (en) * | 2016-11-28 | 2018-05-31 | University Of Lancaster | Passenger transport monitoring system |
| WO2018156096A1 (en) * | 2017-02-21 | 2018-08-30 | Khazin Marat Borisovich | Method and system for automatic passenger counting in public transport |
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