CN110091879A - A kind of gate anti-pinch detection system and its control method based on image recognition - Google Patents
A kind of gate anti-pinch detection system and its control method based on image recognition Download PDFInfo
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- CN110091879A CN110091879A CN201910390021.1A CN201910390021A CN110091879A CN 110091879 A CN110091879 A CN 110091879A CN 201910390021 A CN201910390021 A CN 201910390021A CN 110091879 A CN110091879 A CN 110091879A
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- 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
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
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Abstract
The invention discloses a kind of gate anti-pinch detection system and its control method based on image recognition, belong to gate safety detection technology field, it is by being correspondingly arranged Laser emission component, laser pick-off component and image identification unit, two components can invade train limit at work, and when not working far from limit, and several visible lasers are emitted to laser pick-off component by Laser emission component and form several hot spots, it is identified again by image of the image identification unit to hot spot, can effectively realize the anti-pinch detection of gate.Gate anti-pinch detection system of the invention, its structure is simple, setting is easy, can effectively realize the detection of people or object between platform door component and train body, it is ensured that the safety of station operation, the accuracy and serious forgiveness of detection are high, error is small, and anti-pinch detection system does not invade train limit in train operation, can substantially ensure the stability of train operation, extend the service life of anti-pinch detection system, with good application prospect.
Description
Technical field
The invention belongs to gate safety detection technology fields, and in particular to a kind of gate anti-pinch based on image recognition
Detection system and its control method.
Background technique
With the continuous quickening of urbanization process, the application of rail traffic is also more and more common.It is handed over compared to other cities
For way system, the freight volume of rail traffic is big, punctuality rate is high, can greatly facilitate the trip of people, and rail traffic is often not
There is very obvious action in the road surface running vehicle space for occupying automobile, public transport for improving urban congestion problem.
During the operation of rail traffic, generally platform door system can be set on its platform, be used for platform and rail
Row distinguishes, and realizes getting on or off the bus for passenger.Due to consideration that the train limit in train travelling process, platform door system are set
It sets to generally require to meet and has certain spacing between the train that stops, so that there are one between platform door system and the train that stops
The gap of fixed width degree, causes platform door system to there is some potential safety problems in the process of running.In recent years, rail traffic passenger
The accident being sandwiched between the gate of closing and train door is commonplace, and this accident is particularly susceptible generation in gate and column
Passenger still wants to situation crowded when the situation for squeezing into vehicle by force or upper Train when car door will close.
Obviously, the safety to promote rail transportation operation, it is necessary first to which passenger improves awareness of safety, rides safely；Its
It is secondary, it is also desirable to relevant improvement to be carried out to existing rail traffic station, to promote the safety of station operation.Therefore, Bu Shaoyun
Battalion headquarter's door is additionally arranged anti-pinch safety measure on rail traffic platform, existing anti-pinch safety measure generally there are several types of: 1,
Safety screen is installed additional at the sliding door edge of gate, gap between train door and gate is reduced with it, is reduced passenger and is entered
A possibility that gap.This method often can only prevent passenger from actively entering interstitial area, cannot but prevent passenger from passively being squeezed by car
Enter the gap, then risk is bigger for launch train at this time；2, correlation active infrared line detection system is set AT STATION, usually
Infrared transmitting tube and infrared electro reception pipe including being divided into platform two sides, from infrared transmitting tube between gate and train
Space in emit infrared signal, and it is received by infrared electro reception pipe.When there is barrier between gate and train
When hindering object, infrared receiving tube cannot receive the infrared signal of opposite sending and issue alarm.Although the above method can be certain
The safety of lift station door system in degree, but due to infrared transmitting tube issue light beam the angle of divergence and hot spot often compared with
Greatly, power density decaying is big when transmission, is easy to appear irregular reference phenomenon in narrow gap transmission and fails to report alert or random report
It is alert, cause accuracy poor, has some limitations；3, correlation laser detection system is set AT STATION, by AT STATION
Laser transmitter and terminal receiver is respectively set in both ends, from laser transmitter to terminal receiver transmitting laser signal, then by
The modulated optical signal received is converted into corresponding electric signal by receiver, when light beam is interdicted, is then issued to control host
Alarm signal, to ensure the safety of platform door system operation.Above system can lift station operation to a certain extent safety
Property, reduce the case where passenger is sandwiched in front of gate and car body generation.But point-to-point inspection when due to above-mentioned laser detection
Survey, it is very high to the setting required precision of detection device, along with laser-correlation distance often farther out, once detection device occurs
Slight deviation will lead to the misalignment of testing result, the accident failed to report, misrepresented deliberately occurs, and add existing laser detection system
System generally requires fouling of clearance gauge, and there are certain influences for the safety in operation of setting stability and train to detection system；Together
When, existing laser detection system is in the long-term use, it will usually because the vibration of environment generates displacement, cause to injection
Show deviation and report an error, needs often artificially to be overhauled and safeguarded, increase the operation cost at station, cause great inconvenience.
Summary of the invention
One or more of aiming at the above defects or improvement requirements of the prior art, the present invention provides one kind to be based on
The gate anti-pinch detection system and its control method of image recognition, by distinguishing in platform both ends respective column track row region
Laser emission component and laser pick-off component are set, and being emitted on the projection plate with certain projected area by laser emitter can
See laser beam, and whether the number of spots for detecting light beam formation is vertically equal with the laser emitter of work, judges two with this
Whether someone or object exist between component, by the anti-pinch detection system, can effectively realize point-to-area detection, it is ensured that detection
The case where accuracy, reduction missing inspection, false retrieval, occurs, and promotes the safety during rail traffic platform operation.
To achieve the above object, one aspect of the present invention provides a kind of gate anti-pinch detection based on image recognition
System, which is characterized in that including being divided into platform slab the Laser emission component and laser pick-off component at both ends and right along longitudinal direction
The image identification unit for answering the laser pick-off component to be correspondingly arranged；Wherein,
The Laser emission component is respectively corresponded on the both ends top surface of the platform slab and the laser pick-off component opens up
There are a sliding slot, i.e. first sliding groove and second sliding slot, two sliding slots extend through the platform slab close to the side wall surface in rail row region,
And two the sliding slot be respectively protruding into train limit, and from one end of the train limit is protruded into the side for deviating from the train limit
To extension；
The Laser emission component includes the laser emitter and vertically arranged that at least one can emit visible laser
One column, and the first sliding shoe being fixedly connected with first column bottom；The laser emitter is fixedly connected on institute
The periphery of the first column is stated, and the visible laser beam that the laser emitter is issued projects along longitudinal direction；And described first is sliding
Motion block is correspondingly embedded in the first sliding groove, and can in the first sliding groove along the chute length direction move back and forth, to drive
Laser emitter is stated to protrude into or far from the train limit；
The laser pick-off component includes the projection plate being vertically arranged respectively and the second column, and the projection plate is with side
Be fixed on the second column periphery, and the projection plate is that plate face is not parallel to longitudinal plate structure, can with described in whole
Laser emitter protrudes into opposite in the longitudinal direction when the train limit, and reception when not having barrier between two components at the same time
All visible lasers launched by the Laser emission component, and show that correspondence is each visible in the plate face of the projection plate
The hot spot of laser；Meanwhile corresponding second column is provided with the second sliding shoe, be correspondingly embedded in the second sliding slot and with
The bottom of second column is fixedly connected, so that the second sliding shoe can pass through the reciprocating movement in the second sliding slot
To drive the projection plate to protrude into or far from the train limit；
Described image recognition unit corresponds to the projection plate setting, can recognize all hot spots in the projection plate plate face,
And the visible laser that the number of spots and the Laser emission component of comparison described image recognition unit identification issue can be passed through
Number of beams, to judge between two components whether someone or object exist, to realize the anti-pinch detection of gate.
As a further improvement of the present invention, the first sliding groove and/or the second sliding slot transversely open up.
As a further improvement of the present invention, the plate face of the projection plate is transversely arranged, i.e., the plate face of the described projection plate
It is transversely to the machine direction.
As a further improvement of the present invention, the quantity of the laser emitter is three, and each laser emitter exists
It sets gradually, and is in alignment with each other on vertical.
As a further improvement of the present invention, the end of laser pick-off component side is arranged in described image recognition unit
Men Shang.
As a further improvement of the present invention, the vertical extension of the projection plate is 1.0~1.5m, further preferably
1.2m。
As a further improvement of the present invention, the bottom of the projection plate 0.1 at a distance from the platform plate top surface~
0.3m。
As a further improvement of the present invention, described image recognition unit is video camera, and identifiable visual field area is not
Less than the plate face area of the projection plate.
Another aspect of the present invention provides the control of the gate anti-pinch detection system described in one kind based on image recognition
Method processed, rate-determining steps are as follows:
S1: after train enters the station and comes to a complete stop, the Laser emission component and the laser pick-off component receive control letter respectively
Number, and it is mobile to the rail row region of platform under the drive of corresponding sliding shoe；
S2: the laser emitter and the projection plate are respectively protruding into the train limit, and the laser emitter and
The projection plate is opposite in the longitudinal direction；
S3: at least one described laser emitter is started to work, and is generated visible laser and is emitted on the projection plate, and
Corresponding hot spot is formed on the projection plate；Meanwhile described image recognition unit is started to work, it is corresponding to identify on the projection plate
The whole hot spot；
S4: before train i.e. will be outbound, the laser of number of spots and work that described image recognition unit is identified
The quantity of transmitter compares, and feeds back corresponding signal according to comparing result, if comparing result is equal, feeds back normal letter
Number, gate is closed at this time, and train prepares outbound；If comparing result etc., abnormal signal is fed back, gate is postponed at this time
It closes, train postponement is outbound, until feeding back normal signal；
S5: feedback signal is shown as normally, and gate is closed, launch train；Meanwhile the laser emitter and the throwing
Shadow plate is driven and, the separate train limit mobile to the direction away from rail row region from corresponding sliding shoe respectively；
S6: the Laser emission component and the laser pick-off component move back to initial position, and two sliding shoes stop movement,
Train next time is waited to enter the station.
As a further improvement of the present invention, in step s 4, if comparing result is unequal, abnormal signal is being fed back
Before, the trim process of the laser emitter and/or the projection plate is first carried out, trim process is as follows:
Control first sliding shoe and/or the mobile certain length of the second sliding shoe；If comparing result phase after fine tuning
Deng, then feed back normal signal, if fine tuning after comparing result still differ, feed back abnormal signal.
Above-mentioned improved technology feature can be combined with each other as long as they do not conflict with each other.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have below beneficial to effect
Fruit:
(1) the gate anti-pinch detection system of the invention based on image recognition, by rail traffic platform both ends
Platform slab on be correspondingly arranged Laser emission component and laser pick-off component, and corresponding two components open up respectively in platform board ends
The sliding slot of train limit is protruded into one end, and sliding shoe is respectively set in sliding slot, through two sliding shoes in corresponding sliding slot
It is mobile, it is corresponding to drive Laser emission component and laser pick-off component mobile, so that gate anti-pinch detection system can be transported in train
Far from train limit when row, and protruded into train limit when detecting, it may be to column so as to effectively reduce anti-pinch detection system
Vehicle scratches, and greatly promotes the accuracy of anti-pinch detection simultaneously, it is ensured that the safe operation of train promotes anti-pinch detection system
Stability is set, the service life of anti-pinch detection system is extended；
(2) the gate anti-pinch detection system of the invention based on image recognition, by be correspondingly arranged laser emitter,
Plate and image identification unit are projected, emits visible laser from laser emitter to projection plate, and known by image identification unit is corresponding
The quantity of other detection hot spot can be determined whether effectively by the comparison of number of spots and the laser emitter quantity of work
People or object are clipped between gate and train, and since projection plate is not parallel to longitudinal direction, are realized to a certain extent point-to-area
The case where detecting, effectively ensuring the accuracy of detection, reduce missing inspection, false retrieval generation, has substantially ensured rail traffic platform
Safety during operation；
(3) the gate anti-pinch detection system of the invention based on image recognition, can be by corresponding sliding shoe in sliding slot
In short-distance movement realize the calibration of gate anti-pinch detection system, and calibration process can be automatic in the empty window time AT STATION
It completes, does not influence the normal use at station, the calibration control process of anti-pinch detection system is simple, and accuracy is high, can effectively avoid
The positional shift of laser emitter and projection plate, promotes the detection accuracy of anti-pinch detection system；
(4) control method of the gate anti-pinch detection system of the invention based on image recognition, step is simple, control
Simplicity, intrusion of the gate anti-pinch detection system to train limit when can effectively avoid train operation, it is ensured that the outbound front truck of train
Nobody or object exist between body and gate, fully ensure that the safety of platform operation；
(5) the gate anti-pinch detection system of the invention based on image recognition, structure is simple, and setting is easy, can have
Effect realizes the detection of people or object between platform door component and train body, it is ensured that the safety of station operation, the accuracy of detection
Height, error is small, and anti-pinch detection system does not invade train limit in train operation, can substantially ensure the stabilization of train operation
Property, damage of the anti-pinch detection system to train body is reduced, the service life of anti-pinch detection system is also longer, has and preferably answers
With prospect and promotional value.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the gate anti-pinch detection system when not working in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of gate anti-pinch detection system at work in the embodiment of the present invention；
Fig. 3 is the structural representation when Laser emission component of gate anti-pinch detection system in the embodiment of the present invention does not work
Figure；
Fig. 4 is the structural representation when laser pick-off component of gate anti-pinch detection system in the embodiment of the present invention does not work
Figure；
Structural representation when Fig. 5 is the Laser emission component operation of gate anti-pinch detection system in the embodiment of the present invention
Figure；
Structural representation when Fig. 6 is the laser pick-off component operation of gate anti-pinch detection system in the embodiment of the present invention
Figure；
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1. Laser emission components,
101. laser emitter, 102. first columns, 103. first sliding shoes；2. laser pick-off component, 201. projection plates, 202. images
Recognition unit, 203. second columns, 204. the second sliding shoes；3. platform slab, 301. first sliding grooves, 302. second sliding slots；4. station
Platform door component, 401. end doors, 402. gates.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
Gate anti-pinch detection system in the preferred embodiment of the present invention is as shown in figs. 1 and 2, wherein Fig. 1 is gate
Status diagram when anti-pinch detection system does not work, Fig. 2 are status diagram when gate anti-pinch detection system works.By
Diagram is not difficult to find out that gate anti-pinch detection system is arranged on the straight line platform of rail traffic, specifically, rail traffic
Straight line platform includes the platform slab 3 of respective column track row region setting, and platform door component 4 is correspondingly arranged in platform slab 3, is shown
And easy insight, the parking area setting of the corresponding train of platform door component 4 comprising be divided into the end door 401 at both ends and along straight line
The gate 402 being set between two end doors 401, the gate 402 in preferred embodiment include corresponding train body setting
The sliding door of safety door and corresponding Train door setting；It further, is longitudinal, then 402 edge of gate with train rail line direction
It is longitudinally disposed, and end door 401 is preferably transversely arranged, and the both ends of gate 402 are correspondingly connected with end door 401 close to rail row region
Side.
Further, gate anti-pinch detection system is arranged in the platform slab 3 of 4 two sides of platform door component, and preferably sets
It sets in the side close to rail row region, and the gate anti-pinch detection system in preferred embodiment includes being divided into 3 edge of platform slab
The Laser emission component 1 and laser pick-off component 2 at longitudinal both ends.Wherein, Laser emission component 1 includes multiple laser emitters
101, it is vertically spaced three in preferred embodiment, as shown in Figures 1 and 2；And the laser in preferred embodiment
The corresponding Laser emission component 1 of receiving unit 2 is arranged, and can receive and recognize the laser signal from Laser emission component 1.Together
When, pair it at the both ends of platform slab 3 along longitudinal direction, respectively corresponds Laser emission component 1 and laser pick-off component 2 offers sliding slot, i.e.,
Stress the second sliding slot 302 that is arranged of the first sliding groove 301 that is arranged of light emission component 1 and corresponding laser pick-off component 2, be preferably implemented
The cross section of first sliding groove 301 and/or second sliding slot 302 is in " inverted T-shaped " in example, for matching with corresponding column and sliding block.
Further and specifically, it is preferable to which first sliding groove 301 and/or second sliding slot 302 in embodiment transversely open up, and pass through
Platform slab 3 is worn close to the side wall of rail row region side, as shown in Fig. 3~6.Certainly, first sliding groove 301 and/or second sliding slot
302 can transversely open up, and can also diagonally open up, as long as meeting Laser emission component 1 and/or laser pick-off component 2 can enter
With the needs far from train limit.
Further, it is preferable to which the Laser emission component 1 and laser pick-off component 2 in embodiment can not contact train body
In the case where protrude into train limit, Laser emission component 1 and laser pick-off component 2 after protruding into train limit preferably along longitudinal direction
To just, and Laser emission component 1 can correspond to transmitting multi beam visible laser beam to laser pick-off component 2, and by laser pick-off group
Part 2 is corresponding to be received and detects, and is then got on laser pick-off component 2 by judging whether there is enough laser beams, with this
To judge between Laser emission component 1 and laser pick-off component 2 whether someone or object exist.
Further, it is preferable to which the Laser emission component 1 in embodiment includes three laser emitters being vertically stacked
101 the first columns 102 being arranged with corresponding laser emitter 101, and corresponding first column 102 and the setting of first sliding groove 301
The first sliding shoe 103, as shown in Figure 3 and Figure 5.Wherein, the first column 102 is in vertically arranged rod-like structure, bottom
It is correspondingly connected on the first sliding shoe 103, and the first sliding shoe 103 is correspondingly embedded in first sliding groove 301, and can be in first sliding groove
It is moved back and forth in 301；Further, the top surface of platform slab 3 is stretched out at the top of the first column 102, and each laser emitter 301 is corresponding
It is fixed on 102 periphery of the first column, and the laser that each laser emitter 301 is launched preferably transmits along longitudinal direction.Furthermore it is preferred that
In embodiment corresponding sliding control of first sliding shoe 103 in first sliding groove 301 can by threaded screw rod pair, traction track,
Or the driving forms such as gear-tooth bar assembly are realized, are not specifically limited herein.
Further, it is preferable to which the laser pick-off component 2 in embodiment includes the projection plate 201 in " thin plate " structure and corresponds to
The image identification unit 202 that projection plate 201 is arranged, and the second column 203 and the second sliding shoe that corresponding projection plate 201 is arranged
204, as shown in fig. 4 and fig. 6.Wherein, projection plate 201 and the second column 203 are vertically arranged respectively, and projection plate 201
Plate face is preferably transversely arranged and projection plate 201 is preferably fixed on the second column 203 with one side, and projection plate 201 connects
The side for connecing the second column 203 is preferably the side for deviating from rail row region side, to guarantee that projection plate 201 can be in the second column
Platform slab 3 is stretched out under 203 drive close to the side wall of rail row region side；Further, it is preferable to the second column in embodiment
203 are correspondingly connected with the second sliding shoe 204 in insertion second sliding slot 302 with its bottom, and can be by the second sliding shoe 204 the
Sliding in two sliding slots 302 realizes that projection plate 201 enters train limit or the control far from train limit.
Further, it is preferable to which the image identification unit 202 in embodiment is video camera, it can further preferably be arranged in and throw
In the end door 401 of 201 side of shadow plate, and plate face of its camera lens preferably to the projection plate 201 after positive intrusion train limit, and can know
The visible laser hot spot not received in the plate face, and can judge whether to feed back " abnormal signal " according to testing result.Specifically
For, when the laser emitter 101 being arranged in Laser emission component 1 is N (integer that N is >=1), if image identification unit
202 number of spots detected are less than N, then feed back " abnormal " signal at this time, show Laser emission component 1 and laser pick-off group
Someone or object exist between part 2.For the identification accuracy for promoting image identification unit 202, image recognition list in preferred embodiment
The identification range of member 202 is greater than the area of the reception plate face of projection plate 201.
Further, it is preferable to which Laser emission component 1 is located at first sliding groove 301 when not working away from the area Gui Hang in embodiment
The side in domain, and laser pick-off component 2 deviates from the side in rail row region when not working positioned at second sliding slot 303, to guarantee to swash
The setting of light emission component 1 and laser pick-off component 2 does not influence the normal operation of train, to promote the accuracy controlled, preferably
The equal length of first sliding groove 301 and second sliding slot 302 in embodiment, and transversely opening up, then 103 He of the first sliding shoe
The second sliding shoe 204 can slide identical distance in corresponding sliding slot respectively, so that laser emitter 101 and projection plate 201 divide
Train limit is not protruded into, and in the longitudinal direction to just.
It is further preferred that the vertical extension of projection plate 201 is 1m~1.5m in preferred embodiment, and further specific excellent
It is selected as 1.2m.Certainly, the top surface that the bottom of laser inductor 201 can be higher than platform slab 3 is arranged, and is preferably higher than the platform slab
10~30cm of top surface, to ensure the structures not work to gate anti-pinch detection system such as baffle that corresponding gate 402 is arranged
Generate interference.It is further preferred that gate anti-pinch detection system can commence work without delay after train comes to a complete stop, it can also be in platform
Door prepares to start to work in certain time before closing, meanwhile, after laser emitter 101 and projection plate 201 protrude into train limit, swash
Optical transmitting set 101 can commence work without delay, and can also start to emit visible laser beam when gate prepares and closes.In short, platform
The working time section of door anti-pinch detection system can be adjusted according to actual needs, and adjustment space is big, and flexibility ratio is high.
In addition, the positive relationship after prolonged reciprocally swinging, between Laser emission component 1 and laser pick-off component 2
A little offset may occur, it is therefore desirable to the positive relationship of Laser emission component 1 and laser pick-off component 2 is calibrated,
After ensuring that laser emitter 101 and projection plate 201 protrude into train limit, the visible laser beam of Laser emission component 1 can be in nothing
Barrier is accurately got in the case where separating in the middle part of the perspective plane of projection plate 201, and Laser emission component 1 and laser pick-off component
Position correction between 2 can be completed in the empty window time AT STATION, be existed by the first sliding shoe 103 and/or the second sliding shoe 204
Fine position in corresponding sliding groove, achievable calibration process, after the completion of calibration, by the first sliding shoe 103 and the second sliding shoe
The mobile length of 204 singles is set as identical, can be effectively ensured the accurate withdrawal of laser emitter 101 and projection plate 201 with
Proper alignment.
Further, in the preferred embodiment of the present invention gate anti-pinch detection system in practical application, its control method
Preferably include the following steps:
S1: before train enters the station, Laser emission component 1 and laser pick-off component 2 are in non-working condition, and the two does not invade
The limit of train, and laser emitter 101 is preferably blocked by two end doors 401 in the longitudinal direction with projection plate 201, i.e., does not dash forward both
For gate 402 close to a side end face in rail row region；
S2: after train enters the station and comes to a complete stop, the sliding door of corresponding Train door is started to work, and passenger starts upper Train；Together
When, Laser emission component 1 and laser pick-off component 2 receive signal and start to move, respectively by the first sliding shoe 103 and the second sliding
Block 204 drives and the side to close rail row region is mobile, and then laser emitter 101 and projection plate 201 are respectively protruding into train
In limit and along longitudinal direction to just；
S3: Laser emission component 1 and laser pick-off component 2 are started to work, and each laser emitter 101 generates visible laser light
Beam and correspondence be emitted on projection plate 201, and image identification unit 202 start to work, detect visible laser beam in projection plate
The number of spots formed on 201；
S4: before train i.e. will be outbound, the gate at station starts slowly closing, at this point, corresponding by laser pick-off component 2
Feedback signal is to train and/or station control room, and then the signal fed back according to laser pick-off component 2, whether judges gate
It needs emergent stopping to close, and judges whether train can be outputed from station；
Specifically, working as number of spots and the working quantity phase of laser emitter 101 that image identification unit 202 recognizes
Whens equal, show not accompanying people or object between platform door component and train body, feeds back " normal " signal at this time, gate can be right
It should close, train can be outbound after gate closing.
When the working quantity of number of spots and laser emitter 101 that image identification unit 202 recognizes is unequal, then
Show to accompany people or object between platform door component and train body, feed back " improper " signal at this time, gate is postponed closing, column
Vehicle pause is outbound.
Before feedback " improper " signal, the position of laser emitter 101 can under the driving of the first sliding shoe 103 into
Row fine tuning, if projection plate 201 can receive the hot spot number equal with the working quantity of laser emitter 101 after fine tuning, instead
Present " normal " signal；If projection plate 201 can not still detect the hot spot number of corresponding number after fine tuning, " improper " letter is fed back
Number, gate is postponed closing, and train pause is outbound.
S5: it (has ensured that when train prepares outbound and does not accompany people or object between gate and train body), in platform
While door is closed, train starts to start, and Laser emission component 1 and laser pick-off component 2 are respectively by 103 He of the first sliding shoe
The second sliding shoe 204 controls the side movement to two sliding slots away from rail row region, and then the area Gui Hang far from train, restores initial
State.
The gate anti-pinch detection system that respective carter traffic platform door is arranged in the present invention, by platform both ends pair
It answers train rail row region that Laser emission component and laser pick-off component is respectively set, there is certain projection by Laser emission component
Emit visible laser beam on the projection plate of area, effectively prevents original point-to-point detection because of the detection caused by slight deviations
The case where error realizes point-to-area detection, effectively ensures the accuracy of detection, reduce missing inspection, false retrieval generation, sufficiently
Ensure the safety during rail traffic platform operation, and Laser emission component in the present invention and laser pick-off component can
Train limit is protruded at work under the driving of corresponding sliding shoe, and when not working far from train limit, it is ensured that gate
The setting of anti-pinch detection system does not have an impact the normal operation of train, and also the setting of lift station door anti-pinch detection system is steady
It is qualitative, it prolongs its service life；In addition, Laser emission component and laser pick-off component can be corresponded to by sliding in the empty window time AT STATION
Motion block driving is carried out to positive fine tuning, and then effectively prevents gate anti-pinch detection system by people when influence of ambient vibration, maintenance
For the misalignment problem caused by adjusting, the automatic calibration of anti-pinch detection system is realized, reduces the work of artificial maintenance, calibration
It measures, improves the accuracy of anti-pinch detection system work.
Gate anti-pinch detection system in the present invention, structure is simple, and setting is easy, can effectively realize platform door component
The detection of people or object between train body, it is ensured that the accuracy of the safety of station operation, detection is high, and error is small, and anti-pinch
Detection system does not invade train limit in train operation, can substantially ensure the stability of train operation, reduces anti-pinch detection system
It unites damage to train body, the service life of anti-pinch detection system is also longer, with good application prospect and promotional value.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of gate anti-pinch detection system based on image recognition, which is characterized in that including being divided into platform slab along longitudinal direction
The Laser emission component and laser pick-off component at both ends, and the image recognition list that the corresponding laser pick-off component is correspondingly arranged
Member；Wherein,
The Laser emission component is respectively corresponded on the both ends top surface of the platform slab and the laser pick-off component offers cunning
Slot, i.e. first sliding groove and second sliding slot, two sliding slots extend through the platform slab close to the side wall surface in rail row region, and two
The sliding slot is respectively protruding into train limit, and is prolonged from the one end for protruding into the train limit to the direction away from the train limit
It stretches；
The Laser emission component includes that at least one laser emitter and vertically arranged first that can emit visible laser is stood
Column, and the first sliding shoe being fixedly connected with first column bottom；The laser emitter is fixedly connected on described
The periphery of one column, and the visible laser beam that the laser emitter is issued projects along longitudinal direction；And first sliding shoe
Be correspondingly embedded in the first sliding groove, and can in the first sliding groove along the chute length direction move back and forth, with drive it is described swash
Optical transmitting set protrudes into or far from the train limit；
The laser pick-off component includes the projection plate being vertically arranged respectively and the second column, and the projection plate is fixed with side
In the second column periphery, and the projection plate is that plate face is not parallel to longitudinal plate structure, can be with all laser
Transmitter protrudes into opposite in the longitudinal direction when the train limit at the same time, and receives by institute when not having barrier between two components
All visible lasers that Laser emission component is launched are stated, and show corresponding each visible laser in the plate face of the projection plate
Hot spot；Meanwhile corresponding second column is provided with the second sliding shoe, be correspondingly embedded in the second sliding slot and with it is described
The bottom of second column is fixedly connected, so that the second sliding shoe can be by the reciprocating movement in the second sliding slot come band
The projection plate is moved to protrude into or far from the train limit；
Described image recognition unit corresponds to the projection plate setting, can recognize all hot spots in the projection plate plate face, and can
Pass through the light beam for the visible laser that the number of spots and the Laser emission component of comparison described image recognition unit identification issue
Quantity, to judge between two components whether someone or object exist, to realize the anti-pinch detection of gate.
2. the gate anti-pinch detection system according to claim 1 based on image recognition, wherein the first sliding groove
And/or the second sliding slot transversely opens up.
3. the gate anti-pinch detection system according to claim 1 or 2 based on image recognition, wherein the projection plate
Plate face be transversely arranged, i.e., the plate face of the described projection plate is transversely to the machine direction.
4. the gate anti-pinch detection system described in any one of claim 1 to 3 based on image recognition, wherein institute
The quantity for stating laser emitter is three, and each laser emitter is vertically set gradually, and is in alignment with each other.
5. the gate anti-pinch detection system according to any one of claims 1 to 4 based on image recognition, wherein institute
Image identification unit is stated to be arranged in the end door of laser pick-off component side.
6. the gate anti-pinch detection system according to any one of claims 1 to 5 based on image recognition, wherein institute
The vertical extension for stating projection plate is 1.0~1.5m, further preferably 1.2m.
7. the gate anti-pinch detection system described according to claim 1~any one of 6 based on image recognition, wherein institute
State the bottom of projection plate 0.1~0.3m at a distance from the platform plate top surface.
8. the gate anti-pinch detection system according to any one of claims 1 to 7 based on image recognition, wherein institute
Stating image identification unit is video camera, and identifiable visual field area is not less than the plate face area of the projection plate.
9. a kind of controlling party of the gate anti-pinch detection system according to any one of claims 1 to 8 based on image recognition
Method, rate-determining steps are as follows:
S1: after train enters the station and comes to a complete stop, the Laser emission component and the laser pick-off component receive control signal respectively, and
It is mobile to the rail row region of platform under the drive of corresponding sliding shoe；
S2: the laser emitter and the projection plate are respectively protruding into the train limit, and the laser emitter and described
Projection plate is opposite in the longitudinal direction；
S3: at least one described laser emitter is started to work, and is generated visible laser and is emitted on the projection plate, and at this
Corresponding hot spot is formed on projection plate；Meanwhile described image recognition unit is started to work, it is complete on the corresponding identification projection plate
Hot spot described in portion；
S4: before train i.e. will be outbound, the Laser emission of number of spots and work that described image recognition unit is identified
The quantity of device compares, and feeds back corresponding signal according to comparing result and feed back normal signal if comparing result is equal,
Gate is closed at this time, and train prepares outbound；If comparing result etc., abnormal signal is fed back, gate is postponed closing at this time
It closes, train postponement is outbound, until feeding back normal signal；
S5: feedback signal is shown as normally, and gate is closed, launch train；Meanwhile the laser emitter and the projection plate
It is driven and, the separate train limit mobile to the direction away from rail row region from corresponding sliding shoe respectively；
S6: the Laser emission component and the laser pick-off component move back to initial position, and two sliding shoes stop movement, wait
Train next time enters the station.
10. the control method of the gate anti-pinch detection system according to claim 9 based on image recognition, wherein
In step S4, if comparing result is unequal, before feeding back abnormal signal, the laser emitter and/or the throwing are first carried out
The trim process of shadow plate, trim process are as follows:
Control first sliding shoe and/or the mobile certain length of the second sliding shoe；If comparing result is equal after fine tuning,
Normal signal is fed back, if comparing result still differs after fine tuning, feeds back abnormal signal.
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| CN110091879B (en) | 2023-08-01 |
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