CN105301671B - A kind of scan-type beam detection device and its method - Google Patents
A kind of scan-type beam detection device and its method Download PDFInfo
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- CN105301671B CN105301671B CN201510738525.XA CN201510738525A CN105301671B CN 105301671 B CN105301671 B CN 105301671B CN 201510738525 A CN201510738525 A CN 201510738525A CN 105301671 B CN105301671 B CN 105301671B
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Abstract
The present invention relates to a kind of scan-type beam detection device, and it includes beam transmitter, beam receiver and two scanning brackets；Described two scanning brackets are slideably set in parallel in the initial and end both ends of area of isolation respectively, and two scanning brackets are divided into transmitting scanning support and receive scanning support；Receive and be provided with beam receiver on scanning support；Beam transmitter or beam refractor are provided with transmitting scanning support；Launch scanning support and receive scanning support synchronous slide, the beam that beam transmitter is sent is emitted directly toward or injects the beam receiver after the refraction of beam refractor, and beam swept away whole area of isolation and detected.The present invention realizes the search coverage all standing of high ferro and the inside and outside area of isolation of subway platform safety clearance, realizes that gapless high density detects, its structure more reasonably optimizing and cost substantially reduces, and has safer, effective, reliable safeguard function.Simultaneously can also be in the similar wide long channel isolation application such as other airports, harbour, nuclear power.
Description
Technical field
The present invention relates to safety precaution and railway security detection technology field, more particularly to high ferro, one kind of subway platform
Scan-type beam detection device and its method.
Background technology
High-speed railway, the platform of inter-city passenger rail are provided with safety door (or shield door) device, the safety door (or shield door)
It is similar with safety door (or shield door) device effect of subway, it can prevent from falling track when passenger from waiting, and train is at a high speed
By when the danger that forms of air negative pressure, reduce it is artificial caused by stop delay and driving accident.But to ensure the peace of train
Row for the national games, must retain the area of isolation of one fixed width between train and safety door (or shield door), and this region is also row
The escape truck of passenger when car is stopped.
In general, safety clearance is further provided with the area of isolation, is divided into safe limit again in area of isolation accordingly
Outer area of isolation two parts of area of isolation and safety clearance in boundary, area of isolation is that safety door sideline limits to safety in safety clearance
Battery limit (BL) domain, it is allowed to which safety device is set, and the outer area of isolation of safety clearance is that safety clearance is arrived at a station platform edge area, forbids pacifying
Fill any equipment.
When a few passengers ignore safety signal prompting, get on the bus not into and when not retracting in time in safety door, human body or carrying
Object will remain at the area of isolation, the generation of casualty accident may be caused after launch train, while jeopardize driving
Safety.Therefore, safety door (or shield door) device of high ferro, subway is both needed to take reliable detection protection to arrange in the area of isolation
Apply.
Subway equally exists similar situation.Because the subway train speed of service is low, its area of isolation is again without escape truck
Effect thus the region it is very narrow, thus the outer area of isolation of the safety clearance in subway is very narrow, much smaller than normal human's width, because
This area of isolation in existing safety clearance allows the safety device set, you can while take into account the outer isolated area of safety clearance
The anti-pinch people detection or protection in domain.Such as the area of isolation in the existing safety clearance of subway platform, shield door (or safety
Door) sliding door on install safety screen additional, correlation active infrared line detector and correlation laser are installed on crack passage
The methods of detector, may all take into account the protection of the outer area of isolation (being, for example, less than 50mm) of very narrow safety clearance.
However, in high-speed railway, inter-city passenger rail, because the speed of service significantly improves, safety clearance direction into platform
Obvious skew, cause the outer area of isolation of safety clearance substantially to be widened, and exceed well over human body width (such as 640mm), plus its trip
Area of isolation is widened in gauge caused by objective escape truck function so that passenger is very easy to be trapped in the area of isolation of danger
It is interior.Because the platform of area of isolation outside safety clearance does not allow above the ground to install any equipment and detection means additional, so cause
The outer area of isolation of high speed traveling, wide safety clearance, several factors such as detection and safeguard procedures can not be installed and deposited so that passenger
The person and traffic safety are by even more serious threat.
Moreover, allowing and be easy in the safety precaution of general search coverage of increase checking device, typically using sharp
Optical transmitting set, infraluminescence pipe and microwave emitter etc. are simultaneously equipped with corresponding receiver to form correlation wire harness intrusion detection
Device, and plane intrusion detector is rearranged using more wire harness and grid type.In order to ensure wide covering and reduce leak detection as far as possible,
Need to increase considerably the quantity of wire harness equipment, thus can significantly increase equipment cost and obvious increase technical complexity, thus
Also their promotion and application are seriously limited.
The content of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention is to realize all standing and seamless peace to the inside and outside area of isolation of safety clearance
Full detection, prevents passenger to be detained and be sandwiched in the area of isolation, while detecting devices is in itself also without departing from safety clearance cloth
If.A kind of scan-type beam detection device provided by the invention, can solve high ferro and the inside and outside isolation of subway platform safety clearance
The problem of search coverage all standing in region, at the same realize again gapless high density detection, its structure more reasonably optimizing and
Cost substantially reduces, and has safer, effective, reliable superiority.
Simultaneously also for Generally Recognized as safe take precautions against region detection protect provide a kind of new all standing, seamless plane enters
Invade detector scheme.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention discloses a kind of scan-type beam detection device, it includes beam hair
Emitter, beam receiver and two scanning brackets；Described two scanning brackets are slideably set in parallel in area of isolation respectively
Initial and end both ends, two scanning brackets be divided into transmitting scanning support and receive scanning support；
Receive and be provided with beam receiver on scanning support；Beam transmitter or beam refraction are provided with transmitting scanning support
Device；
Launch scanning support and receive scanning support synchronous slide, the beam that beam transmitter is sent is emitted directly toward or rolled over through beam
The beam receiver is injected after emitter refraction, beam swept away whole area of isolation.
Further, the area of isolation is divided into N number of subregion；The scan-type beam detection device includes N number of described penetrate
Beam transmitter and N number of beam receiver；
N number of beam receiver is uniformly arranged on the reception scanning support, N number of beam transmitter or N number of described
Beam refractor is uniformly arranged on the transmitting scanning support；I-th beam receiver, the i-th beam transmitter and the refraction of the i-th beam
Device is corresponding with the i-th subregion respectively；
Launch scanning support and receive scanning support synchronous slide, the i-th beam that the i-th beam transmitter is sent is emitted directly toward or passed through
The i-th beam receiver is injected after the refraction of i-th beam refractor, the i-th beam swept away whole i-th subregion, and wherein N is not less than 1
Natural number, i ∈ (1,2 ... N).N sizes are according to the width of area of isolation or are actually needed and do appropriate selection.
Further, the scan-type beam detection device includes a beam transmitter and a beam receives
Device；The beam receiver is arranged on the front end of the reception scanning support；Beam is provided with the front end of the transmitting scanning support
Transmitter or beam refractor.
Further, the area of isolation includes 2 subregions, and two subregions are respectively area of isolation and safety in safety clearance
The outer area of isolation of boundary；Corresponding with subregion, the beam transmitter includes inner region beam transmitter and outskirt beam transmitter, institute
Stating beam receiver includes inner region beam receiver and outskirt beam receiver；
The transmitting scanning support and reception scanning support are set in parallel in the initial and end two of area of isolation in safety clearance respectively
End；The front end for receiving scanning support is provided with outskirt beam receiver, and the rear end for receiving scanning support is provided with inner region beam and connect
Receive device；
The transmitting scanning support front and back ends are respectively arranged with outskirt beam transmitter and inner region beam transmitter, Huo Zhesuo
State transmitting scanning support front and back ends and be respectively arranged with outskirt beam refractor and inner region beam refractor；
Launch scanning support and receive scanning support synchronous slide, the outer area of isolation of safety clearance is stretched into the front end of scanning bracket；
The inner region beam that the inner region beam transmitter is sent is emitted directly toward or injected after inner region beam refractor refraction
The inner region beam receiver, inner region beam swept away area of isolation in the whole safety clearance；
The outskirt beam that the outskirt beam transmitter is sent is emitted directly toward or rolled over through the outskirt beam refractor
The outskirt beam receiver is injected after penetrating, outskirt beam swept away the outer area of isolation of the whole safety clearance.
Further, the scan-type beam detection device also includes beam emissions circuit board；Beam emissions circuit board and institute
Beam transmitter connection is stated, for sending electric pulse to encourage beam transmitter.
Further, the scan-type beam detection device also includes beam circuit board for receiving, the beam circuit board for receiving
It is connected with the beam receiver, for the output signal of beam receiver to be handled and differentiated, and is blocked in beam
When output alarm signal.
Further, the scan-type beam detection device also includes being used for the driving machine for driving the scanning bracket movement
Structure；The drive mechanism is electric expansion bar；Or drive mechanism is lead-screw drive mechanism, lead-screw drive mechanism include motor,
Leading screw and feed screw nut, feed screw nut are fixed in the scanning bracket, and motor driven leading screw rotates, and leading screw passes through feed screw nut
Driving scanning bracket moves forward and backward.
Further, the scan-type beam detection device also includes controller, the controller respectively with the motor, institute
State beam emissions circuit board and beam circuit board for receiving connection.
Further, the scanning bracket is arranged on guide rail, and the guide rail is line slideway or curvilinear guide.
Further, limit switches are set on the guide rail, and the limit switch is connected with the controller；It is described spacing
Switch includes the stretching limit switch for being arranged on guide rail front end, the retraction limit switch for being arranged on guide rail rear end.
Further, the beam refractor is optical mirror or optical prism.
Further, the guide rail is set perpendicular to area of isolation.
Further, the beam is the combination of laser, infrared light and microwave thrin or three；It is relative with beam
Should, the beam transmitter is generating laser, infraluminescence pipe, microwave emitter thrin or the combination of three, described
Beam receiver is photelectric receiver and/or microwave receiver.
A kind of method detected using above-mentioned scan-type beam detection device to area of isolation, it possesses including following
Step：
Step 1, after the controller receives station platform safety door closing locking signal, the controller starts the beam hair
Transmit-receive radio road plate, to encourage the beam transmitter；The controller starts the reception of beam circuit board for receiving linkage beam simultaneously
Device works；
Step 2, the controller drives the transmitting scanning support and receives scanning support and synchronously moves by the drive mechanism
It is dynamic；
The beam that the beam transmitter is sent is emitted directly toward or after beam refractor refraction described in injection
Beam receiver, beam swept away whole area of isolation；
Step 3, the beam circuit board for receiving is handled and differentiated to the output signal of beam receiver, and in beam
Output alarm signal when being blocked.
Further, the scanning bracket moves along guide rail, after scanning bracket touches stretching limit switch, the driving machine
Structure pause, delay drive scanning bracket to retract after waiting；After scanning bracket touches the retraction limit switch, scanning bracket
Initial position is reset to, drive mechanism is stopped.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the advantages that：
1. the spy that several beam transmitters and beam receiver in the scan-type beam detection device of the present invention are formed
Survey beam, transverse shifting scanning, after the completion of auto-returned, realize respectively to several subregional all standings of isolation and seamless
The continuity detection of gap.Thus under conditions of detection device does not invade safety clearance, to isolating outside the safety clearance on platform
The whole passage of area of isolation is accomplished entirely without missing inspection in region and safety clearance, it is ensured that to all kinds of passengers of men and women, old and young even
The reliable detection of small items, it is more safely, effectively reliable.
2. compared to significantly optimizing in the wide grid fashion of existing multiple beam its structure, equipment volume is substantially reduced, it is made
It is greatly lowered as cost, and has the characteristics that Anti-Jamming Technique is simplified and installation and debugging are more convenient, is more beneficial for big
The promotion and application of scope.
Therefore, for ensureing, passenger and traffic safety have great practical significance in high ferro, subway transport.Certainly, this
Scheme is in subway using the superiority also with the completely not super safety clearance of equipment, all standing and seamless detection.Equally can be with
The seamless detection and security protection of all standing are realized in the area of isolation of the channel-likes such as airport, harbour, nuclear power.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the sectional view of the transmitting casing of the embodiment of the present invention；
Fig. 3 is the sectional view of the reception casing of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the beam transmitter of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the beam receiver of the embodiment of the present invention；
Wherein, 1：Inner region beam transmitter；2：Outskirt beam transmitter；3：Inner region beam refractor；4：Outskirt beam is rolled over
Emitter；5：Line slideway；6：Scanning bracket；7：Leading screw；8：Feed screw nut；10：Stretch out limit switch；11：Retraction limit switch；
12：Locating piece；13：Motor；14：Beam emissions circuit board；15：Controller；16：Rail brackets；17：Launch casing；18：Inner region
Beam receiver；19：Outskirt beam receiver；30：Beam circuit board for receiving；32：Receive casing；33：Semiconductor laser tube；
34：Negative lens；35：Positive lens；36：Inner cylinder；37：Outer barrel；38：Receiving lens；39：Optical filter；40：Photoelectric apparatus；41：
Receiver cylinder；42：Launch box opening；43：Receive box opening；45：Screw；46：Safety door；47:Platform edge；48：Stand
Platform.
Embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following examples are used for
Illustrate the present invention, but can not be used for limiting the scope of the present invention.
In the description of the invention, it is necessary to explanation, unless otherwise indicated, " multiple " be meant that two or two with
On；The orientation of the instruction such as term " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", " afterbody "
Or position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and simplifies description, and
It is not instruction or implies signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary.It is right
For one of ordinary skill in the art, visual concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
As Figure 1-3, a kind of scan-type beam detection device that the present embodiment provides includes two scanning brackets 6, interior
Area's beam transmitter 1, outskirt beam transmitter 2, inner region beam refractor 3, outskirt beam refractor 4, inner region beam receiver
18 and outskirt beam receiver 19；
Scanning bracket 6 is slidably disposed in the safety clearance on platform 48 in area of isolation.
Two scanning brackets 6 are divided for transmitting scanning support 6a and receive scanning support 6b；Safety door 46 and the edge 47 of platform 48 it
Between be area of isolation, the area of isolation is divided into area of isolation and safety clearance in safety clearance again according to the safety clearance of setting
Outer area of isolation.Two scanning brackets 6a and 6b are set in parallel in isolated area in headstock and safety clearance corresponding to the tailstock respectively
Domain.
Launch scanning support 6a, inner region beam transmitter 1, outskirt beam transmitter 2, inner region beam refractor 3, outskirt beam
Refractor 4 is arranged in transmitting casing 17.It is equal to receive scanning support 6b, inner region beam receiver 18 and outskirt beam receiver 19
It is arranged on and receives in casing 32.Wherein, inner region, outskirt beam refractor are optical mirror or optical prism.Receive casing 32
It is fixed on transmitting casing 17 by screw 45 on platform 48.
Transmitting scanning support 6a front ends are provided with outskirt beam refractor 4, and transmitting scanning support 6a rear ends are provided with inner region beam
Refractor 3；The front end for receiving scanning support 6b is provided with outskirt beam receiver 19, and the rear end for receiving scanning support 6b is provided with inner region
Beam receiver 18；
Launch scanning support 6a and receive scanning support 6b synchronous slides, transmitting scanning support 6a stretches with the front end for receiving scanning support 6b
Enter the outer area of isolation of safety clearance；Transmitting scanning support 6a front end is stretched out from the opening 42 of transmitting casing 17, the refraction of inner region beam
Device 3 moves to position A ' from position A, and outskirt beam refractor 4 moves to position B ' from position B,
Equally, the front end for receiving scanning support 6b is stretched out from the opening 43 for receiving casing 32, and inner region beam receiver 18 is from position
Put C and move to C ', outskirt beam receiver 19 moves to D ' from position D.
The inner region beam that inner region beam transmitter 1 is sent is injected inner region beam after the refraction of inner region beam refractor 3 and connect
Receive in device 18, inner region beam swept away area of isolation in safety clearance；The outskirt beam warp that outskirt beam transmitter 2 is sent is outer
Area's beam refractor 4 is injected in outskirt beam receiver 19 after reflecting, and outskirt beam swept away the outer area of isolation of safety clearance.
As shown in Fig. 2 scan-type beam detection device also includes beam emissions circuit board 14；Beam emissions circuit board 14 divides
Be not connected with inner region beam transmitter 1 and outskirt beam transmitter 2, for send electric pulse with encourage inner region, outskirt beam send out
Emitter 1 and 2.
As shown in figure 3, scan-type two-beam detection device also includes beam circuit board for receiving 30, beam circuit board for receiving 30
It is connected respectively with inner region beam receiver 18 and outskirt beam receiver 19, for inner region, outskirt beam receiver 18 and 19
Output signal handled and differentiated, and the output alarm signal when beam is blocked.
Scan-type beam detection device also includes being used to drive scanning bracket 6 to move and enter the front end of scanning bracket 6
With the drive mechanism for exiting area of isolation outside safety clearance.Drive mechanism is lead-screw drive mechanism, and lead-screw drive mechanism includes electricity
Machine 13, leading screw 7 and feed screw nut 8, feed screw nut 8 are fixed in scanning bracket 6, and motor 13 drives leading screw 7 to rotate, and leading screw 7 is logical
Crossing feed screw nut 8 drives scanning bracket 6 movable.Wherein, scanning bracket 6 is arranged on line slideway 5.16 be guide rail branch
Frame.Line slideway 5 be arranged in parallel with platform plane, and perpendicular to platform sideline 47.Certainly, when necessary, line slideway also may be used
It is changed to the curvilinear guide of other forms.Drive mechanism can also use other forms, such as electric expansion bar.
Wherein, 15 be controller, controller 15 respectively with motor 13, beam emissions circuit board 14 and beam receiving circuit
Plate 30 connects.
As shown in Figures 2 and 3, limit switches are set on line slideway 5, and limit switch is connected with controller 15；It is spacing to open
Closing includes the stretching limit switch 10 for being arranged on the front end of line slideway 5, the retraction limit switch for being arranged on the rear end of line slideway 5
11.Wherein 12 be the locating piece for touching limit switch set in scanning bracket.
Wherein beam is preferably laser, and this example is scanning type laser detection device, inner region beam emissions corresponding with laser
Device 1 and outskirt beam transmitter 2 are generating laser, and inner region beam receiver 18 and outskirt beam receiver 19 are laser pick-off
Device.
Specifically, inner region beam transmitter is inner region generating laser, and outskirt beam transmitter is outskirt Laser emission
Device, inner region beam refractor are inner region laser refraction device, and outskirt beam refractor is outskirt laser refraction device；Beam emissions circuit
Plate is laser transmission circuit plate, and inner region beam receiver is inner region laser pickoff, and outskirt beam receiver is that outskirt laser connects
Device is received, beam circuit board for receiving is laser pick-off circuit board.
As shown in figure 4, generating laser includes semiconductor laser tube 33, negative lens 34, positive lens 35 and is nested in one
The inner cylinder 36 and outer barrel 37 risen, negative lens 34 are arranged on the front end of inner cylinder 36, and the rear end of inner cylinder 36 is provided with bonnet, bonnet and negative
Semiconductor laser tube 33 is set between lens 34, and positive lens 35 is pressed in the front end of outer barrel 37 by protecgulum, and the center of protecgulum has logical
There is cable-through hole at unthreaded hole, the center of bonnet.The laser beam of fine setting generating laser can be realized by the transmitter adjusting bracket of routine
Direction.The modulation electric pulse exported by beam emissions circuit board 14 encourages semiconductor laser tube 33, and semiconductor laser tube 33 is sent
Pulse laser beam with coding characteristic, then after negative lens 34 and positive lens 35 are combined to the beam shaping conversion of laser, hair
Project the laser beam of collimation.
As shown in figure 5, laser pickoff includes receiver cylinder 41 and the receiving lens 38 being successively set in receiver, filter
Mating plate 39 and photoelectric apparatus 40, the front-end and back-end of receiver cylinder 41 are respectively arranged with protecgulum and bonnet, the center of protecgulum
The center for being provided with light hole and bonnet is provided with cable-through hole.Photoelectric apparatus 40 can be photoelectric tube or silicon photocell, can also
It is the element that other can convert optical signals to electric signal.
Embodiment 2
A kind of method detected using above-mentioned scan-type beam detection device to platform area of isolation, it possess including
Following steps：
Step 1, after controller 15 receives the closing locking signal of station platform safety door 46, controller 15 passes through beam emissions circuit
Plate 14 starts inner region beam transmitter 1 and outskirt beam transmitter 2；Controller 15 starts in beam circuit board for receiving 30 and linkage
Area's beam receiver 18 and outskirt beam receiver 19 work；
Step 2, controller 15 drives transmitting scanning support 6a by screw drive mechanism and receives scanning support 6b synchronizing movings,
The outer area of isolation of safety clearance is stretched into transmitting scanning support 6a and reception scanning support 6b front end；
The inner region beam that inner region beam transmitter 1 is sent is injected inner region beam after the refraction of inner region beam refractor 3 and connect
Device 18 is received, inner region beam swept away area of isolation in whole safety clearance；
The outskirt beam that outskirt beam transmitter 2 is sent is injected outskirt beam after the refraction of outskirt beam refractor 4 and connect
Device 19 is received, outskirt beam swept away the outer area of isolation of safety clearance；
Step 3, beam circuit board for receiving 30 is handled and differentiated to the output signal of inner region, outskirt beam receiver,
And the output alarm signal when beam is blocked.
Wherein, scanning bracket 6 moves along line slideway 5, and the locating piece 12 of scanning bracket 6, which touches, stretches out limit switch 10
Afterwards, reversion drives scanning bracket 6 to retract after drive mechanism pause, delay wait；When the locating piece 12 of scanning bracket 6 touches contracting
After returning limit switch 11, scanning bracket 6 resets to initial position, and drive mechanism is stopped, the beam emissions of this detection device
Device, receiver etc. power off, and controller etc. enters holding state and waits the subsequent work cycle.
Wherein beam is preferably laser, and this example is preferably then scanning type laser detection device.
Furthermore it is possible to according to being actually needed, transmitting casing is set and receives the size of casing and the length of scanning bracket
With stroke (such as the size in subway can be very short), alarm time can be set (to meet that this blocks duration and sent
Alarm, to determine detectable barrier minimum dimension) and alarm signal duration is sent, rising for scanning area can also be specifically set
Beginning and terminal.Scanning beam to the ground of platform 48 height, and between safety door (or shield door) 46 and platform sideline 47
Away from can also preset., can be with single driver sweep, or timing, periodic scan according to detection needs, the alarm signal sent
It number can transmit to system control main frame and to be recorded and be handled.
Embodiments of the invention provide for the sake of example and description, and are not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
Select and describe embodiment and be to more preferably illustrate the principle and practical application of the present invention, and make one of ordinary skill in the art
It will be appreciated that the present invention is so as to designing the various embodiments with various modifications suitable for special-purpose.
Claims (8)
1. a kind of scan-type beam detection device, it is characterised in that it includes beam transmitter, beam receiver and two scannings
Support；Described two scanning brackets are slideably set in parallel in the initial and end both ends of area of isolation, two scanning branch respectively
Frame is divided into transmitting scanning support and receives scanning support；
Receive and be provided with beam receiver on scanning support；Beam transmitter or beam refractor are provided with transmitting scanning support；
Launch scanning support and receive scanning support synchronous slide, the beam that beam transmitter is sent is emitted directly toward or through beam refractor
The beam receiver is injected after refraction, beam swept away whole area of isolation；
The area of isolation is divided into N number of subregion；The scan-type beam detection device includes N number of beam transmitter and N
The individual beam receiver；
N number of beam receiver is uniformly arranged on the reception scanning support, N number of beam transmitter or N number of beam
Refractor is uniformly arranged on the transmitting scanning support；I-th beam receiver, the i-th beam transmitter and the i-th beam refractor point
It is not corresponding with the i-th subregion；
Launch scanning support and receive scanning support synchronous slide, the i-th beam that the i-th beam transmitter is sent is emitted directly toward or through i-th
The i-th beam receiver is injected after the refraction of beam refractor, the i-th beam swept away whole i-th subregion, and wherein N is oneself not less than 1
So number, i ∈ (1,2 ... N)；
The area of isolation includes 2 subregions, and two subregions are respectively to isolate in safety clearance outside area of isolation and safety margin
Region；Corresponding with subregion, the beam transmitter includes inner region beam transmitter and outskirt beam transmitter, and the beam receives
Device includes inner region beam receiver and outskirt beam receiver；
The transmitting scanning support and reception scanning support are set in parallel in the initial and end both ends of area of isolation in safety clearance respectively；Institute
The front end for stating reception scanning support is provided with outskirt beam receiver, and the rear end for receiving scanning support is provided with inner region beam receiver；
The transmitting scanning support front and back ends are respectively arranged with outskirt beam transmitter and inner region beam transmitter, or the hair
Penetrate scanning support front and back ends and be respectively arranged with outskirt beam refractor and inner region beam refractor；
Launch scanning support and receive scanning support synchronous slide, the outer area of isolation of safety clearance is stretched into the front end of scanning bracket；It is described
The inner region beam that inner region beam transmitter is sent is emitted directly toward or after inner region beam refractor refraction described in injection
Inner region beam receiver, inner region beam swept away area of isolation in the whole safety clearance；
The outskirt beam that the outskirt beam transmitter is sent is emitted directly toward or after outskirt beam refractor refraction
The outskirt beam receiver is injected, outskirt beam swept away the outer area of isolation of the whole safety clearance.
A kind of 2. scan-type beam detection device according to claim 1, it is characterised in that the scan-type beam detection
Device includes a beam transmitter and a beam receiver；The beam receiver is arranged on the reception and swept
Retouch the front end of frame；The front end of the transmitting scanning support is provided with beam transmitter or beam refractor.
A kind of 3. scan-type beam detection device according to claim 1, it is characterised in that the scan-type beam detection
Device also includes beam emissions circuit board；Beam emissions circuit board is connected with the beam transmitter, for send electric pulse with
Encourage beam transmitter.
A kind of 4. scan-type beam detection device according to claim 3, it is characterised in that the scan-type beam detection
Device also includes beam circuit board for receiving, and the beam circuit board for receiving is connected with the beam receiver, for being connect to beam
The output signal for receiving device is handled and differentiated, and the output alarm signal when beam is blocked.
A kind of 5. scan-type beam detection device according to claim 4, it is characterised in that the scan-type beam detection
Device also includes being used for the drive mechanism for driving the scanning bracket movement；The drive mechanism is electric expansion bar；Or drive
Motivation structure is lead-screw drive mechanism, and lead-screw drive mechanism includes motor, leading screw and feed screw nut, and feed screw nut is fixed on described sweep
Retouch on support, motor driven leading screw rotates, and leading screw drives scanning bracket to move forward and backward by feed screw nut.
A kind of 6. scan-type beam detection device according to claim 5, it is characterised in that the scan-type beam detection
Device also includes controller, and the controller receives with the motor, the beam emissions circuit board and the beam respectively
Circuit board connects.
7. a kind of scan-type beam detection device according to claim 6, it is characterised in that the scanning bracket is arranged on
On guide rail, the guide rail is line slideway or curvilinear guide；Limit switches, the limit switch and institute are set on the guide rail
State controller connection；The limit switch includes the stretching limit switch for being arranged on guide rail front end, the contracting for being arranged on guide rail rear end
Return limit switch.
8. a kind of method that scan-type beam detection device using described in claim 6 or 7 is detected to area of isolation, its
Possess and comprise the following steps：
Step 1, after the controller receives station platform safety door closing locking signal, the controller starts the beam emissions electricity
Road plate, to encourage the beam transmitter；The controller starts beam circuit board for receiving linkage beam receiver work simultaneously
Make；
Step 2, the controller drives the transmitting scanning support by the drive mechanism and receives scanning support synchronizing moving；
The beam that the beam transmitter is sent is emitted directly toward or injects the beam after beam refractor refraction
Receiver, beam swept away whole area of isolation；
Step 3, the beam circuit board for receiving is handled and differentiated to the output signal of beam receiver, and is hidden in beam
Output alarm signal during gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738525.XA CN105301671B (en) | 2015-11-03 | 2015-11-03 | A kind of scan-type beam detection device and its method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738525.XA CN105301671B (en) | 2015-11-03 | 2015-11-03 | A kind of scan-type beam detection device and its method |
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| CN110103993B (en) * | 2019-05-10 | 2024-01-16 | 中铁第四勘察设计院集团有限公司 | Platform door laser anti-pinch system of track traffic curve platform and control method thereof |
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| CN202614955U (en) * | 2012-05-24 | 2012-12-19 | 北京北奥东华激光技术有限公司 | Continuous reflection type laser detection device |
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