CN108001461A - Subway shield door gauge area intelligent anti-clip detection warning device and method - Google Patents
Subway shield door gauge area intelligent anti-clip detection warning device and method Download PDFInfo
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- CN108001461A CN108001461A CN201711312714.6A CN201711312714A CN108001461A CN 108001461 A CN108001461 A CN 108001461A CN 201711312714 A CN201711312714 A CN 201711312714A CN 108001461 A CN108001461 A CN 108001461A
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- Prior art keywords
- laser
- gauge area
- door
- detection
- lens
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
- E05F2015/765—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects using optical sensors
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention proposes a kind of subway shield door gauge area intelligent anti-clip detection warning device and method, laser emitting module, laser detection module and analysis processor are set, the detection to gauge area is realized using laser ranging, without mechanical gyro unit, improves system stability；Each Train Stopping demarcates gauge area before opening the door, and updates pre-determined distance, and ranging offset caused by vibrations cause ranging offset when correcting train operation automatically influences, precision higher；Rung using narrow band pass filter filter background shadow, the veiling glare of passenger in compartment and luggage are excluded alerting outside region automatically, false alarm rate is low；The configuration of the present invention is simple, it is cheap, detection alarm is completed using algorithm, artificial maintenance and detection hardware device are reduced, there is the advantages of accuracy of detection is high, and false alarm rate is low, detection alarm can be also realized for minimum obstacle target, straight line platform and crescent platform can be used.
Description
Technical field
The present invention relates to metro safety technical field, more particularly to a kind of subway shield door gauge area intelligent anti-clip detection report
Alarm device and method.
Background technology
Subway shield door is the subject such as item collection building, machinery, material, electronics and information in the high-tech product of one,
It is used in subway platform.Shield door separates platform and train operation region, controls its automatic opening by control system, mainly
Ensure safety when train, passenger are out of the station.Slit between subway shield door and train door is known as gauge area, this gauge area
Be ensure subway train safe operation necessary to.Once folder people, which occurs, for the limit within battery limit between shield door and train door presss from both sides thing,
If train travel can cause great security incident at this time, therefore very necessary searching one kind can detect subway shield door and row
Within battery limit is limited between car door the method that folder people presss from both sides thing occurs.
What subway system mainly used at present has three kinds of schemes, infrared exoelectron fence, light bar observation and installation anti-pinch baffle.
Wherein for infrared exoelectron fence mainly using infrared emission pipe to detecting whether that someone or thing block infrared light, this method is main
It is related with the infrared emission pipe mode installed to be limited to its detection resolution, and the program is not suitable for crescent platform, with
Vibrations when subway train operation cause the deviation of infrared emission pipe to cause very high false alarm rate.Light bar observation method is mainly
One straight LED lamp band is installed in shield door lower edge, by observation of the train driver to light bar to determine whether there is folder people
Principle condition is pressed from both sides, this method is mainly the subjective judgement by driver, adds the mental burden of driver, and this method is not
Suitable for crescent platform.Install additional anti-pinch baffle method, can only test limit battery limit (BL) bottom space detection, for backpack strip this
Kind press from both sides principle shape higher than the folder people of height of baffle plate and can not detect, and baffle can cause it is certain invade boundary, the safety to train is transported
Row leaves hidden danger.
The content of the invention
In view of this, the present invention propose a kind of accuracy of detection is high, false alarm rate is low, to straight line platform and crescent platform all
The subway shield door gauge area intelligent anti-clip detection warning device and method that can be used.
The technical proposal of the invention is realized in this way：On the one hand, the present invention provides a kind of subway shield door gauge area
Intelligent anti-clip detects warning device, it includes laser emitting module, laser detection module and analysis processor, laser emitting module
Including laser, collimation lens and linear optical generator, laser detection module includes convergent lens, narrow band pass filter and photoelectricity
Detector, wherein,
Laser, falls in the focus of collimation lens primary optical axis, sends laser；
Collimation lens, is converted into a shaped laser spot by incident laser and is emitted；
Linear optical generator, is converted into wire hot spot by incidence point shaped laser spot and is incident upon gauge area；
Convergent lens, focuses on the wire hot spot reflected through barrier in gauge area；
Photodetector, is arranged at the focal plane position of convergent lens；
Narrow band pass filter, is arranged in the light path between convergent lens and photodetector；
Analysis processor, is connected with photo detector signal, and the signal of photodetector collection is analyzed, calculates limit
The real-time range of within battery limit barrier and laser emitting module, and real-time range and the difference of pre-determined distance are calculated, when the difference
Alarm signal is sent when value is beyond the threshold value of setting, otherwise provides traffic safety signal.
On the basis of above technical scheme, it is preferred that laser is semiconductor laser；Collimation lens is aspherical standard
Straight lens or spherical lens；Linear optical generator is Bao Weier lens, cylindrical lens or wave lens.
On the basis of above technical scheme, it is preferred that the laser emitting module is fixed on screen door top
Train door centre position, the wire hot spot of linear optical generator projection fall on the center line on gauge area ground.
On the other hand, the present invention provides a kind of subway shield door gauge area intelligent anti-clip to detect alarm method, it is used
Subway shield door gauge area intelligent anti-clip detection warning device described in first aspect present invention, analysis processor detection subway row
The signal that car and shield door close the door and open the door, after the signal that subway train and shield door are closed the door is received, laser sends sharp
Light pulse, analysis processor detect and calculate the time difference Δ t that laser sends through laser, is received by a photoelectric detector again,
And the distance of barrier and laser emitting module in gauge area is calculated according to time difference Δ t.
On the basis of above technical scheme, it is preferred that calculate the distance of barrier and laser emitting module in gauge area
Formula is as follows,
Wherein, c is the light velocity in air, and D is limited the distance of within battery limit barrier and laser emitting module.
On the basis of above technical scheme, it is preferred that before each Train Stopping opens the door, calculate in gauge area barrier with
The distance of laser emitting module as pre-determined distance, in gauge area the real-time range of barrier and laser emitting module with it is last
Measure obtained pre-determined distance to be compared and calculate the difference of the two, alarm is sent when threshold value of the difference beyond setting
Signal, otherwise provides traffic safety signal.
The subway shield door gauge area intelligent anti-clip detection warning device and method of the present invention is not only suitable for subway shield
Door, is also applied for the safety detection of elevator door.
The subway shield door gauge area intelligent anti-clip detection warning device and method of the present invention has relative to the prior art
Following beneficial effect：
(1) laser emitting module, laser detection module and analysis processor are set, realized using laser ranging to gauge area
Detection, without mechanical gyro unit, improve system stability；
(2) Train Stopping demarcates gauge area before opening the door every time, updates pre-determined distance, corrects train operation automatically
Ranging offset caused by Shi Zhendong causes ranging offset influences, precision higher；
(3) rung using narrow band pass filter filter background shadow, the veiling glare of passenger in compartment and luggage are excluded automatically
Alert outside region, false alarm rate is low；
(4) the configuration of the present invention is simple, it is cheap, detection alarm is completed using algorithm, reduces artificial maintenance and detection
Hardware device, has the advantages of accuracy of detection is high, and false alarm rate is low, and detection alarm can be also realized for minimum obstacle target, right
Straight line platform and crescent platform can use.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the testing principle schematic diagram that subway shield door gauge area intelligent anti-clip of the present invention detects warning device.
Embodiment
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is carried out clear
Chu, be fully described by, it is clear that described embodiment only a part of embodiment of the present invention, rather than whole realities
Apply mode.Based on the embodiment in the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, belongs to the scope of protection of the invention.
The subway shield door gauge area intelligent anti-clip detection warning device of the present invention, as shown in Figure 1, it includes Laser emission
Module 1, laser detection module 2 and analysis processor 3.
Laser emitting module 1, sends wire hot spot and is incident upon gauge area.Specifically, it includes laser 11, collimation thoroughly
Mirror 12 and linear optical generator 13.
Laser 11, falls in the focus of 12 primary optical axis of collimation lens, sends laser pulse.Specifically, laser 11 can
Using semiconductor laser, it is preferred to use the infrared semiconductor laser of eye-safe.
Collimation lens 12, is collimated into a shaped laser spot by the point-like laser pulse of laser 11 and is emitted, laser 11 falls in standard
In the focus of 12 primary optical axis of straight lens.Specifically, collimation lens 12 is aspheric collimation lens or spherical lens.
Linear optical generator 13, is converted into wire hot spot by incidence point shaped laser spot and is incident upon gauge area.Specifically, through
The point shaped laser spot for crossing the outgoing of collimation lens 12 falls on the center of linear optical generator 13.Linear optical generator 13 is
Bao Weier lens, cylindrical lens or wave lens.
By setting laser 11, collimation lens 12 and linear optical generator 13, laser 11 launches a laser
Pulse, a narrow light belt is expanded into after collimation lens 12 and linear optical generator 13 and is radiated at gauge area.Specifically
, the laser emitting module 1 is fixed on the train door centre position on screen door top, and linear optical generator 13 projects
Wire hot spot fall on the center line on gauge area ground.
Laser detection module 2, detects the laser pulse reflected through barrier.It includes convergent lens 21, narrow band pass filter
22 and photodetector 23.22 main filtration of narrow band pass filter falls the interference of bias light.
Photodetector 23, is arranged at the focal plane position of convergent lens 21；
Narrow band pass filter 22, is arranged in the light path between convergent lens 21 and photodetector 23；
Analysis processor 3, is connected with 23 signal of photodetector, and the signal gathered to photodetector 23 is analyzed,
The real-time range of barrier and laser emitting module 1 in gauge area is calculated, and calculates real-time range and the difference of pre-determined distance, when
Alarm signal is sent when the difference is beyond the threshold value of setting, otherwise provides traffic safety signal.In this way, in the barrier of limit within battery limit
Hinder thing to laser pulse reflection echo signal after the convergence of convergent lens 21, done by eliminating bias light after narrow band pass filter 22
Disturb, into photodetector 23, the laser pulse reflection echo signal received is converted into electric signal by photodetector 23
When amplification, shaping through oversampling circuit, mirror and the processing of the when of survey draws the time difference Δ t for receiving signal and launching signal, utilizes air
Middle light velocity c is constant, and barrier can be calculated from 1 distance D of laser emitting module using time-of-flight：
Specifically, analysis processor 3 detects the signal that subway train and shield door close the door and open the door, subway row are being received
After the signal that car and shield door are closed the door, laser 11 sends laser pulse, and analysis processor 3 detects and calculates laser through laser
The 11 time difference Δ t for sending, being received again by photodetector 23, and according to time difference Δ t calculate in gauge area barrier with
The distance of laser emitting module 1.
In this way, nobody and object by when, the barrier is limited battery limit (BL) ground, and pre-determined distance and real-time range are equal
Be limited battery limit (BL) ground and the distance of laser emitting module 1, and pre-determined distance is less than threshold value, analysis processor 3 with real-time range difference
Provide traffic safety signal；When someone or object by when, the barrier is limited the people or object that within battery limit passes through, preset away from
With a distance from be limited battery limit (BL) ground and laser emitting module 1, real-time range is limited people that within battery limit passes through or object is sent out with laser
The distance of module 1 is penetrated, pre-determined distance is more than threshold value with real-time range difference, and analysis processor 3 provides alarm signal and gives train control
System processed, prompts limit within battery limit to have barrier, avoids train door and shield door from carrying out door-closing operation by force, prevent from crushing passenger and
Forbid train travel, improve subway circulation security.
The vibrations occurred in train operation can cause pre-determined distance to shift, so as to cause to calculate analysis appearance partially
Difference.Therefore, iron shield thresholding battery limit (BL) intelligent anti-clip detection alarm method of the invention, before each Train Stopping opens the door, calculates limit
The distance of within battery limit barrier and laser emitting module 1 is used as pre-determined distance, barrier and laser emitting module 1 in gauge area
Real-time range is compared with the pre-determined distance that last measurement obtains and calculates the difference of the two, when the difference is beyond setting
Threshold value when send alarm signal；Otherwise traffic safety signal is provided.
In this way, before the analysis processor 3 has the function of that intelligence learning, each Train Stopping are opened the door, obstacle in gauge area
Thing is limited battery limit (BL) ground, the distance of barrier and laser emitting module 1 in gauge area is calculated as pre-determined distance, so as to eliminate row
The vibrations that occur can cause pre-determined distance to shift caused accuracy error when car is run.
The foregoing is merely the better embodiment of the present invention, it is not intended to limit the invention, it is all the present invention's
Within spirit and principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of subway shield door gauge area intelligent anti-clip detects warning device, it includes laser emitting module (1), laser detection
Module (2) and analysis processor (3), it is characterised in that：Laser emitting module (1) includes laser (11), collimation lens (12)
With linear optical generator (13), laser detection module (2) includes convergent lens (21), narrow band pass filter (22) and photodetection
Device (23), wherein,
Laser (11), falls in the focus of collimation lens (12) primary optical axis, sends laser；
Collimation lens (12), is point shaped laser spot outgoing by incident laser collimation；
Linear optical generator (13), is converted into wire hot spot by incidence point shaped laser spot and is incident upon gauge area；
Convergent lens (21), focuses on the wire hot spot reflected through barrier in gauge area；
Photodetector (23), is arranged at the focal plane position of convergent lens (21)；
Narrow band pass filter (22), is arranged in the light path between convergent lens (21) and photodetector (23)；
Analysis processor (3), is connected with photodetector (23) signal, and the signal of photodetector (23) collection is divided
Analysis, calculates the real-time range of barrier and laser emitting module (1) in gauge area, and calculates real-time range and the difference of pre-determined distance
Value, sends alarm signal when threshold value of the difference beyond setting, otherwise provides traffic safety signal.
2. subway shield door gauge area intelligent anti-clip as claimed in claim 1 detects warning device, it is characterised in that：Laser
(11) it is semiconductor laser；Collimation lens (12) is aspheric collimation lens or spherical lens；Linear optical generator (13)
For Bao Weier lens, cylindrical lens or wave lens.
3. subway shield door gauge area intelligent anti-clip as claimed in claim 1 detects warning device, it is characterised in that：It is described to swash
Light emission module (1) is fixed on the train door centre position on screen door top, the line of linear optical generator (13) projection
Shaped laser spot falls on the center line on gauge area ground.
4. a kind of subway shield door gauge area intelligent anti-clip detects alarm method, it is characterised in that：Using described in claim 1
Subway shield door gauge area intelligent anti-clip detection warning device, analysis processor (3) detection subway train and shield door close the door and
The signal of enabling, after the signal that subway train and shield door are closed the door is received, laser (11) sends laser pulse, at analysis
Reason device (3) detects and calculates the time difference Δ t that laser sends through laser (11), received again by photodetector (23), and
The distance of barrier and laser emitting module (1) in gauge area is calculated according to time difference Δ t.
5. iron shield thresholding battery limit (BL) intelligent anti-clip as claimed in claim 4 detects alarm method, it is characterised in that：Calculate gauge
The range formula of barrier and laser emitting module (1) is as follows in area,
<mrow>
<mi>D</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mi>c</mi>
<mo>*</mo>
<mi>&Delta;</mi>
<mi>t</mi>
</mrow>
<mn>2</mn>
</mfrac>
</mrow>
Wherein, c is the light velocity in air, and D is limited the distance of within battery limit barrier and laser emitting module (1).
6. iron shield thresholding battery limit (BL) intelligent anti-clip as claimed in claim 4 detects alarm method, it is characterised in that：Each train
Before parking is opened the door, the distance of barrier and laser emitting module (1) in gauge area is calculated as pre-determined distance, obstacle in gauge area
The real-time range of thing and laser emitting module (1) is compared with the pre-determined distance that last measurement obtains and calculates the difference of the two
Value, sends alarm signal when threshold value of the difference beyond setting, otherwise provides traffic safety signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711312714.6A CN108001461A (en) | 2017-12-12 | 2017-12-12 | Subway shield door gauge area intelligent anti-clip detection warning device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312714.6A CN108001461A (en) | 2017-12-12 | 2017-12-12 | Subway shield door gauge area intelligent anti-clip detection warning device and method |
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| CN108001461A true CN108001461A (en) | 2018-05-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612508A (en) * | 2018-12-10 | 2019-04-12 | 王建荣 | A kind of rail traffic shield door barrier secondary detection device and its detection method |
| CN110596780A (en) * | 2018-06-13 | 2019-12-20 | 盖慈有限公司 | Monitoring device |
| CN113267824A (en) * | 2021-05-21 | 2021-08-17 | 镇江国川光电科技有限公司 | Human body detection protection method and protection device in laser processing area |
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| CN113267824A (en) * | 2021-05-21 | 2021-08-17 | 镇江国川光电科技有限公司 | Human body detection protection method and protection device in laser processing area |
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