CN206100324U - Auxiliary visible light communication car light localization tracking device of license plate - Google Patents
Auxiliary visible light communication car light localization tracking device of license plate Download PDFInfo
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- CN206100324U CN206100324U CN201621165468.7U CN201621165468U CN206100324U CN 206100324 U CN206100324 U CN 206100324U CN 201621165468 U CN201621165468 U CN 201621165468U CN 206100324 U CN206100324 U CN 206100324U
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Abstract
The utility model discloses an auxiliary visible light communication car light localization tracking device of license plate. The device includes transceiver and user interface, the transceiver includes: image collector, image processor, photoelectric receiver array, decider, communication vehicle lamp and driver, user interface includes: input module, transceiver controller and display, image collector is connected with the image processor electricity, and the photoelectric receiver array is connected with the decider electricity, and the photoelectric receiver array is connected with the image collector electricity, and the communication vehicle lamp is connected with the driver electricity, transceiver controller is connected with driver, image processor, decider, input module, display electricity respectively. The utility model discloses a device simple structure adopts visible light communication, image acquisition recognition technology, acquires image information by the image acquisition ware, the position and the license plate number of image processor license plate in according to image information discernment image, vehicle visible light communication's stability and accuracy are within a definite time improved to the position of localization tracking communication vehicle lamp from this.
Description
Technical field
The utility model belongs to technical field of visible light communication, more particularly to a kind of visible light communication car light of car plate auxiliary
Location tracking device.
Background technology
Visible light communication is a kind of brand-new wireless communication means, and the method is using the high speed amplitude modulated beams of visible light wave range
A kind of method for being communicated, can carry out the communication such as data, voice, video.Car and car are realized using visible light communication technology
Between information exchange, provide a new solution to set up car networking.But due on road travel vehicle it is many, lamp
Light is mixed and disorderly, if it is desired to realizing that visible light communication sets up connection between designated vehicle on road, how to select correct vehicle to enter
Row communication, is again a problem to be solved.
According to the requirement of national relevant laws and regulations, visibility point to be installed by car plate before and after vehicle.Car plate is used as motor vehicle
Unique identity, the specification of existing automotive number plate is all fixed, the car plate 440mm × 140mm of compact car,
The front car plate size of large car is equivalently-sized with small-sized car plate, and rear board is 440mm × 220mm.Through observation, the front photograph of motor vehicle
Lamp and rearmounted brake lamp generally in 120 degree of Qian Hou car plate or so, apart from about 1 meter of the sector region in car plate edge.Meanwhile, by imaging
The image that head collection is returned understands that a car light for lighting is the hot spot of a circle, the hot spot and through the numerical value of AD conversion,
A saltus step is had relative to outer peripheral areas.
According to above-mentioned Railway Project and several technical methods, the utility model proposes a kind of car plate auxiliary can
See optic communication car light location tracking device.By the License Plate to needing to set up communication, fast and accurately tracing and positioning is to this
Car is used for the car light of visible light communication, so as to more accurate, the stable visible light communication realized between car and car.
The content of the invention
The purpose of this utility model is to provide a kind of visible light communication car light location tracking device of car plate auxiliary.
What the utility model was realized in：
A kind of visible light communication car light location tracking device of car plate auxiliary, including：Transceiver and user interface；Transmitting-receiving
Machine, including：Image acquisition device, image processor, photoreceptor array, decision device, communication car light and driver；User connects
Mouthful, including：Input module, transceiver controller and display；Image acquisition device is electrically connected with image processor, photelectric receiver battle array
Row are electrically connected with decision device, and photoreceptor array is electrically connected with image acquisition device, and communication car light is electrically connected with driver；Receive
Send out controller to electrically connect with driver, image processor, decision device, input module, display respectively.
The visible light communication car light location tracking device simple structure of car plate auxiliary of the present utility model, comprehensively employing can
See optical communication technique and IMAQ, technology of identification, realize identification and the positioning of car plate, and with reference to the positioning of car plate, quickly
The position of positioning vehicle communication truck lamp, by the combination of imaging technique and non-imaged technology, so as to improve the steady of visible light communication
Qualitative and accuracy so that carry out the session between vehicle with visible light communication technology under complicated traffic environment and be possibly realized.
Description of the drawings
Fig. 1 is the system knot of the visible light communication car light location tracking device of car plate auxiliary in the utility model embodiment
Composition.
Mark in figure：1- user interfaces；2- transceivers；10- transceiver controllers；11- input modules；12- displays；16-
Touch-screen；20- image acquisition devices；21- image processors；22- photoreceptor arrays；23- decision devices；24- communication car lights；
25- drivers.
Specific embodiment
Embodiment：
A kind of visible light communication car light location tracking device of car plate auxiliary, including：Transceiver 2, user interface 1；Transmitting-receiving
Machine 2, including：Image acquisition device 20, image processor 21, photoreceptor array 22, decision device 23, communication car light 24, driving
Device 25；User interface 1, including：Input module 11, transceiver controller 10 and display 12；Image acquisition device 20 and image procossing
Device 21 is electrically connected, and photoreceptor array 22 is electrically connected with decision device 23, and photoreceptor array 22 is electric with image acquisition device 20
Connection, communication car light 24 is electrically connected with driver 25;Transceiver controller 10 respectively with driver 25, image processor 21, judgement
Device 23, input module 11, display 12 are electrically connected.
Image acquisition device 20, for gathering real-time imaging, to obtain obtaining image information, and exports to image processor
21。
Image processor 21, for the image information exported according to image acquisition device 20, identifies car plate in image
Position, and license plate number.
Each photelectric receiver in photoreceptor array 22, it is all corresponding with a pixel of image acquisition device 20,
For sensing the visible light signal that the pixel positonlight sends, and be converted to analog electrical signal output.
Decision device 23, for according to the instruction of transceiver controller, selecting corresponding photoelectricity in photoreceptor array 22 to connect
The analog electrical signal output of device is received, and is converted into corresponding data signal and is exported.
Communication car light 24, for sending visible light signal, communicate headlamp, clearance lamps, brake lamp of the car light using automobile.
Driver 25, for driving communication car light 24 to send visible light signal.
Input module 11, for the license plate number for being input into control instruction, communication need to being set up.
Display 12, for display device need show graph text information, graph text information, including：License plate number, man-machine interaction
The real-time imaging of information, image acquisition device 20.
Transceiver controller 10, for realizing：1st, the output to input module 11 is processed, and is identified control instruction, is led to
Letter information, license board information；2nd, the license plate number of the output of image processor 21, the position of car plate are received, and determines that needs set up connection
Vehicle license plate number, and the position of the car plate；3rd, according to the position of car plate, search determines the vehicle communication car light 24 of the car plate
Position；4th, according to the light position information of communication car light 24, control decision device 23 selects pixel on correspondence image collector 20
The photelectric receiver of point, and receive the data signal output of decision device 23；5th, the data signal output of decision device 23 is solved
Analysis, obtains corresponding control instruction, the communication information；6th, car plate database is preserved；7th, according to the output of input module, generation can
See the Frame of optic communication, and signal is sent to driver 25 according to Frame, then communication car light 24 is driven by driver 25
Go out visible light signal.
The visible light signal of the visible light communication car light location tracking device of the car plate auxiliary of the present embodiment is with Frame
Form sends, and Frame includes：Synchronous code, target license plate, source car plate, data type, data length, data, check information, altogether
7 fields.
Synchronous code, for keeping the data transmit-receive clock synchronization of two devices of session both sides, and represents a data
The beginning of frame.
Target license plate, for representing the opponent vehicle license plate number for needing to conversate.
Source car plate, for representing the one's own side's vehicle license plate number for conversating；For police car, ambulance, the field can be
The license plate number information of vehicle itself, or special numeral combination.
Data type, for representing the type of notebook data frame, the type of Frame includes：Session request, session data, meeting
Words request-reply, session request response confirm that session request Frame is sent by session setup end, for representing to conversational response
End sends the request of session establishment；Session request reply data frame is sent by conversational response end, for representing to session setup end
Send the request-reply of session establishment；Session request response confirms that Frame is sent by session setup end, and for representing meeting is received
Words request-reply Frame, confirms to set up connection；Session data frame, for carrying the information that send session.
Data length, for the length of data field in one Frame of expression.
Data, for placing control instruction, the communication information of session.
Check information, it is whether wrong for inspection data frame, for the mistake occurred in transmitting procedure is corrected.
When the B vehicles that the car plate that the A vehicles for being equipped with the device will be equipped with same sampling device with another is capital BBBBBB
Communication is set up, and keeps communication not interrupt, need the moment according to the movement of the car plate of opponent vehicle, follow the trail of the communication truck of other side
Lamp；For example：A vehicles need in the communications, and search positions the position of the car plate of B vehicles and communication car light, to guarantee that A vehicles can
The visible light signal sent from B vehicle communications car light is persistently received, its tracing process and method are as follows：
By the image acquisition device of A vehicles, real-time imaging is gathered, to obtain image information, and exported to image processor；Figure
The image information exported according to image acquisition device as processor, identifies position and the car plate of the car plate of B vehicles in image
Number；Again the position by device according to the car plate of B vehicles and license plate number capital BBBBBB, determine the position of the communication car light of B vehicles.
After searching for and determining the position of car plate of B vehicles, the position of the communication car light 24 of its B vehicle is positioned, positioning is chased after
The process of track is as follows：
What D1, the position for determining the car plate that a license plate number is capital BBBBBB, and the car plate were obtained in image acquisition device
In image, pixel number a that the long side of car plate takes, pixel number b that car plate broadside takes.
D2, construction coordinate system：Two diagonal intersection points with car plate as coordinate origin, with by origin and parallel to length
The straight line on side is transverse axis, and right side is transverse axis positive direction；It is the longitudinal axis perpendicular to long side, top is longitudinal axis positive direction, a pixel
Point is coordinate system long measure；Construction coordinate system：Center with the bottom of car plate as coordinate origin, with the prolongation on the long side
Line is transverse axis, and right side is transverse axis positive direction；It is the longitudinal axis perpendicular to long side, top is longitudinal axis positive direction, and a pixel is seat
Mark system long measure.
The isosceles triangle of D3, one 120 degree of construction：The drift angle of isosceles triangle is coordinate origin, and two waists are distinguished
Spend in -60 degree and+60 with the positive axis of coordinate system transverse axis, with 2 times of car plate length b of range coordinate system origin as height.
D4, D3 construction the isosceles triangle region in, from left to right scanning search the car car plate on the right side of car light,
The subprocess of D4 is as follows：
D4.1, from left to right, with transverse axis as starting point, searches for by column up and down respectively, when the brightness for searching right side
There is the region that the pixel of rise saltus step is just predicted as light place in value.
D4.2, the origin with coordinate origin as ray, through the ray of the pixel of the rise saltus step, continuation is penetrated along this
Decline saltus step is searched in line direction, until searching the pixel of decline saltus step or searching the border of image.
One line segment of construction：Just the pixel with the rise saltus step in the ray is as one end, the pixel of decline saltus step or
The border of person's image is the other end.
D4.3, arbiter is controlled by transceiver controller select the pixel that the line segment center is located in photoreceptor array
In corresponding photelectric receiver output.
D4.4, again by transceiver controller according to the output of decision device, attempt parsing Frame, if it is possible to parse data
Frame, just verifies to Frame：If the source car plate field in Frame is capital BBBBBB, it is determined that the light is B vehicles
Communication car light send, and the visible light signal is received, into D5；If Frame cannot be parsed, will be into D4.5.
D4.5, more than brightness value for searching occur rise saltus step pixel beginning, D3 constructions this etc.
In lumbar triangle shape region, continue to search for the pixel that second brightness value for arranging occurs rise saltus step along the original direction of search
Point, if it is possible to search, then into D4.2；Otherwise enter D4.6.
D4.6, the next column of that row searched for D4.5 start, and continue executing with D4.1.
D5, when determine right side light after, search again for the car light on the left of car plate, equally first construct an isoceles triangle
Shape：The isosceles triangle of one 120 degree of construction：The drift angle of isosceles triangle is coordinate origin, two waists respectively with coordinate system
The negative semiaxis of transverse axis is spent in -60 degree and+60, with 2 times of car plate length y of range coordinate system origin as height.
D6, in D5 constructions isosceles triangle region, the car light on the left of the car plate of the car is searched in scanning from right to left；D6's
Subprocess is as follows：
D6.1, from right to left, with transverse axis as starting point, searches for by column up and down respectively, when the brightness for searching left side
There is the region that the pixel of rise saltus step is just predicted as light place in value.
D6.2, the origin with coordinate origin as ray, through the ray of the pixel of the rise saltus step, continuation is penetrated along this
Decline saltus step is searched in line direction, until searching the pixel of decline saltus step or searching the border of image.
One line segment of construction：Just the pixel with the rise saltus step in the ray is as one end, the pixel of decline saltus step or
The border of person's image is the other end.
D6.3, arbiter is controlled by transceiver controller select the pixel that the line segment center is located in photoreceptor array
In corresponding photelectric receiver output.
D6.4, again by transceiver controller according to the output of decision device, attempt parsing Frame, if it is possible to parse data
Frame, just verifies to Frame：If the source car plate field in Frame is capital BBBBBB, it is determined that the light is B vehicles
Communication car light send, and the visible light signal is received, into D7；If Frame cannot be parsed, will be into D6.5.
D6.5, more than brightness value for searching occur rise saltus step pixel beginning, D5 constructions this etc.
In lumbar triangle shape region, continue to search for the pixel that second brightness value for arranging occurs rise saltus step along the original direction of search
Point, if it is possible to search, then into D6.2；Otherwise enter D6.6.
D6.6, the next column of that row searched for D6.5 start, and continue executing with D6.1.
D7, the two positions are locked after position all determines in image acquisition device, then when bilateral light；And in the next one
At the IMAQ moment of image acquisition device, search for the two positions and its adjacent pixel, brightness value whether with upper one
The collection moment is close to, and to determine light position, and parses Frame, logarithm according to the output of decision device by transceiver controller
Verified according to frame, if the source car plate field in Frame is capital BBBBBB, it is determined that the light is the communication truck of the car plate
Lamp sends, and receives the visible light signal；If due to blocking or other reasonses, causing this step to perform, then redirect
To D1, communication car light is repositioned.
Claims (1)
1. the visible light communication car light location tracking device that a kind of car plate is aided in, including：Transceiver (2) and user interface (1)；Receive
Machine (2) is sent out, including：Image acquisition device (20), image processor (21), photoreceptor array (22), decision device (23), communication
Car light (24) and driver (25)；User interface (1), including：Input module (11), transceiver controller (10) and display
(12)；Image acquisition device (20) is electrically connected with image processor (21), and photoreceptor array (22) is electrically connected with decision device (23)
Connect, photoreceptor array (22) is electrically connected with image acquisition device (20), communication car light (24) is electrically connected with driver (25);
Transceiver controller (10) respectively with driver (25), image processor (21), decision device (23), input module (11), display
(12) electrically connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165468.7U CN206100324U (en) | 2016-10-26 | 2016-10-26 | Auxiliary visible light communication car light localization tracking device of license plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621165468.7U CN206100324U (en) | 2016-10-26 | 2016-10-26 | Auxiliary visible light communication car light localization tracking device of license plate |
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| CN206100324U true CN206100324U (en) | 2017-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106331656A (en) * | 2016-10-26 | 2017-01-11 | 桂林理工大学 | License plate assisted positioning and tracking device with visible light communication vehicle lamp |
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2016
- 2016-10-26 CN CN201621165468.7U patent/CN206100324U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106331656A (en) * | 2016-10-26 | 2017-01-11 | 桂林理工大学 | License plate assisted positioning and tracking device with visible light communication vehicle lamp |
| CN106331656B (en) * | 2016-10-26 | 2023-08-15 | 桂林理工大学 | License plate-assisted visible light communication car lamp positioning and tracking device |
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