CN105678852B - Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method - Google Patents
Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method Download PDFInfo
- Publication number
- CN105678852B CN105678852B CN201511030817.4A CN201511030817A CN105678852B CN 105678852 B CN105678852 B CN 105678852B CN 201511030817 A CN201511030817 A CN 201511030817A CN 105678852 B CN105678852 B CN 105678852B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- industry control
- control subsystem
- roadside unit
- subsystem
- Prior art date
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/22—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition
- G06V10/225—Image preprocessing by selection of a specific region containing or referencing a pattern; Locating or processing of specific regions to guide the detection or recognition based on a marking or identifier characterising the area
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Finance (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Traffic Control Systems (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
This application involves ETC lane toll systems and its licence plate recognition methods under MLFF scenes.System includes roadside unit, the video intelligent recognition subsystem with wagon detector and video camera and industry control subsystem.The vehicle detection trigger signal that the coordinate information and wagon detector for the board units that industry control subsystem combination roadside unit reports upload is judged, after determining that vehicle is in shooting area, controls video capture and identification that corresponding video camera carries out vehicle.The application is taken pictures by the method that the location information of vehicle and the trigger signal of wagon detector are combined to trigger camera, the case where so as to reduce false triggering, improves the efficiency of system.In one embodiment, by the location information of vehicle, and the triggering region of wagon detector is combined, control camera takes pictures to the rear vehicle into trigger region domain, to reduce the case where leakage is clapped, further increases the recognition success rate of system car plate.
Description
Technical field
This application involves technical field of intelligent traffic more particularly to a kind of multilane free flow (MLFF, Multi-Lane
Free Flow) electric non-stop toll (ETC, Electronic Toll Collection) lane system and its Car license recognition
Method.
Background technology
When being charged by traffic infrastructures such as urban road, bridge, tunnels to vehicle, if the justice of card charge method
Property it is preferable, but that there are efficiency is low, influence passage, congestion, pollutes the defects of environment；And although annual ticket charge method efficiency is higher,
But lacking fairness, because as walking the payment walked, walk or do not walked less vehicle more.It is received in due order under scene so typically now using
The mode taken can solve the problems, such as charge efficiency and justice simultaneously.And MLFF electronic charging system without parking refers to, is charging
Website does not have track isolation facility, toll facility to be erected on the portal frame above track, and is installed on the vehicle that misses the stop vehicle-mounted
Unit (OBU, On Board Unit, also known as electronic tag) completes charge transaction through wireless communication, and vehicle can be according to
(including by track, standdle carrier road and becoming track) passes through toll station to normal speed in any way.
In MLFF systems, it is desirable that positioned to OBU, vehicle cab recognition and video capture system, common vehicle of completing is coordinated to check
Look into and capture violation vehicle car plate etc..Specifically, it usually needs by transaction record, vehicle location information, vehicle image and car plate
Recognition result is uploaded to track computer, carries out comprehensive analysis to the information that these are uploaded by track computer, is formed complete
Vehicle transaction record is crossed with foundation as a result.Such as it also automatically generates serial number while capturing image (it should be with transaction journal
It is number identical), it, cannot if track computer judges that capture image serial number matches with transaction journal number, is transferred to preservation automatically
Image corresponding with transaction journal number, then be determined as violation vehicle, the foundation demanded as expense.
In terms of the Car license recognition of ETC system, the ETC system that is currently in operation mostly use greatly laser triggering capture again into
Row Car license recognition, or Car license recognition is carried out by the video flowing of camera.In place of these schemes come with some shortcomings.It is adopting
It is captured in the scheme for carrying out Car license recognition again with laser triggering, since the optical signal that laser is sent out is easy the shadow by environmental factor
It rings, when encountering the weather such as dense fog, heavy snow, heavy rain or bad air quality, the function of equipment will have a greatly reduced quality.Cause
In inclement weather, to there are the substances such as many particles or snow grain, raindrop in the air so that these substances are sent out after knocking laser
Phenomena such as raw refraction, reflection, blocking and energy absorption, these phenomenons will cause the false triggering of equipment, it is possible to leading to vehicle
Board identification error.Moreover, being analyzed with car plate if camera is taken pictures by false triggering, it is possible to lead to ought really have vehicle mistake
When coming, camera carries out data processing to previous take pictures, and leakage is caused to be clapped.Alternatively, when a vehicle is always in laser
The triggering region of device is not left, and another vehicle also enter this triggering region when, laser only previous vehicle into it is fashionable touch
Once photo taking is sent out, and latter vehicle is no longer taken pictures into fashionable, also leads to leakage bat car plate occur in this way.And it is carried out using video flowing
In the scheme of Car license recognition, because the data volume of processing is big so that the time that camera carries out a Car license recognition is longer, exists
The case where clapping car plate is leaked because inefficient.
Invention content
It is free that the application provides a kind of multilane that can reduce false triggering camera candid photograph image to improve Car license recognition
Flow Electronic Toll Collection for Lane System and its licence plate recognition method.
According to the application's in a first aspect, the application provides a kind of multilane free flow electric non-stop toll track system
System includes the roadside unit realized based on dedicated short-range communication, identifies son with the video intelligent of wagon detector and video camera
System and the industry control subsystem being connect respectively with the roadside unit and the video intelligent recognition subsystem signal；
The roadside unit includes antenna, and the roadside unit is searched for by the antenna in antenna coverage areas vehicle-mounted
Unit carries out wireless location to the board units searched, and positioning gained coordinate information is reported the industry control subsystem；
When the wagon detector drives into vehicle detection triggering region for the vehicle residing for the board units, vehicle is generated
Detection trigger signal, and the vehicle detection trigger signal is uploaded into the industry control subsystem；
The coordinate information and the wagon detector that the industry control subsystem is used to be reported according to the roadside unit
The vehicle detection trigger signal of biography, judges whether the vehicle is in the shooting area of the video camera, if the vehicle is in
The shooting area, then the industry control subsystem controls corresponding video camera shooting vehicle, obtains vehicle image；
The video intelligent recognition subsystem carries out Car license recognition according to the vehicle image.
In one embodiment, the coordinate information of each new definition is uploaded the industry control subsystem, institute by the roadside unit
State the running orbit that industry control subsystem forms the vehicle according to the coordinate information of upload；The industry control subsystem is described in judgement
While whether vehicle is in the shooting area of the video camera, determined according to the running orbit control corresponding video camera into
Row shooting.
In another embodiment, the elements of a fix that the industry control subsystem is uploaded according to the roadside unit, judge same
Vehicle detection is triggered with the presence or absence of at least two vehicles in region, if it is judged that being deposited in the same vehicle detection triggering region
In at least two vehicles, then enter the location information of the vehicle in same vehicle detection triggering region after, control is taken the photograph accordingly
Camera shoots to obtain vehicle image the rear vehicle that region is triggered into same vehicle detection.
In another embodiment, at least side unit, at least one camera shooting all the way is respectively set on each track in multilane
Machine and at least a wagon detector, the antenna coverage areas of the antenna of the roadside unit in adjacent two track is in two tracks
Critical zone is overlapped mutually, and the shooting area of the video camera in adjacent two track is overlapped mutually in two track critical zones, and adjacent two
The vehicle detection triggering region of the wagon detector in track is overlapped mutually in two track critical zones.
Further, the same board units that the industry control subsystem is reported according to the roadside unit on each track
Location information calculate the vehicle-mounted list using the center of the antenna of each roadside unit point perpendicular to the ground as coordinate origin
The coordinate of member, is converted into the coordinate in same plane, the coordinate in the same plane is with the leftmost side by calculated coordinate
The crosspoint for the position that track or rightmost side track are set up with the roadside unit is origin, multigroup same flat to what is converted
Areal coordinate carries out the judgement of valid data to reject error-value, obtains virtual value, and average value is calculated according to virtual value, described flat
Mean value is the coordinate position of the board units.
In another embodiment, antenna covering fore-and-aft distance covering vehicle detection triggering fore-and-aft distance and vehicle identification are longitudinal
Distance, antenna covering fore-and-aft distance are the antenna coverage areas in the distance in the vehicle traveling direction, described
It is that the vehicle detection triggers region in the distance in the vehicle traveling direction, the vehicle that vehicle detection, which triggers fore-and-aft distance,
Identification fore-and-aft distance be the shooting area in the distance in the vehicle traveling direction.
In another embodiment, the system further includes remote monitoring subsystem, respectively with the roadside unit, institute
It states video intelligent recognition subsystem to connect with the industry control subsystem signals, for monitoring the roadside unit respectively, described regarding
The operating status of frequency intelligent recognition subsystem and the industry control subsystem stores the roadside unit, the video intelligent respectively
The handling result of recognition subsystem and the industry control subsystem.
According to the second aspect of the application, the application provides a kind of multilane free flow electric non-stop toll as described above
Licence plate recognition method in lane system, described method includes following steps：
Industry control subsystem receives the location information for the board units that roadside unit reports, and also receives what wagon detector uploaded
Vehicle detection trigger signal；
The industry control subsystem judges the board units according to the location information and the vehicle detection trigger signal
Whether residing vehicle is in shooting area, if the vehicle is in the shooting area, controls corresponding video camera shooting institute
Vehicle is stated, vehicle image is obtained, the vehicle image is used to carry out Car license recognition for the video intelligent recognition subsystem.
In one embodiment, the method further includes following steps：
The location information that the industry control subsystem reports every time according to the roadside unit, forms the fortune of the vehicle
Row track；
The industry control subsystem is while judging whether the vehicle is in the shooting area of the video camera, according to institute
It states running orbit and determines that controlling corresponding video camera is shot.
In another embodiment, the method further includes following steps：
The elements of a fix that the industry control subsystem is uploaded according to the roadside unit judge same vehicle detection triggering region
In with the presence or absence of at least two vehicles, if it is judged that there are at least two vehicles in the same vehicle detection triggering region,
The location information for then entering the vehicle in same vehicle detection triggering region after controls corresponding video camera to the rear entrance
The vehicle in same vehicle detection triggering region is shot to obtain vehicle image.
The advantageous effect of the application is：The side being combined by the location information of vehicle and the trigger signal of wagon detector
Method is taken pictures to trigger camera, the case where so as to reduce false triggering, improves the efficiency of system.
In one embodiment, by the location information of vehicle, and the triggering region of wagon detector is combined, controls camera
It takes pictures to the rear vehicle into trigger region domain, to reduce the case where leakage is clapped, further increases being identified as system car plate
Power.
Description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present application, required use in being described below to embodiment
Attached drawing be briefly described, wherein same reference numerals indicate same section.
Fig. 1 is the road area schematic diagram of the multilane free flow electronic charging system without parking of one embodiment of the application；
Fig. 2 is road area shown in Fig. 1 in the schematic diagram of same plane coordinate；
Fig. 3 is the longitudinally controlled area schematic of road area shown in Fig. 1；
Fig. 4 is the ETC free flow toll collection systems composition figure of one embodiment of the application；
Fig. 5 enters laser for more vehicles in the multilane free flow electronic charging system without parking of one embodiment of the application and touches
The case where sending out region schematic diagram；
Fig. 6 is being grabbed based on the car plate in multilane free flow Electronic Toll Collection for Lane System for one embodiment of the application
Clap the flow diagram of recognition methods.
Specific implementation mode
Driving board identifying schemes and Car license recognition carried out by video flowing to overcome the candid photograph of existing laser triggering to go forward side by side
Insufficient present in scheme, the embodiment of the present application proposes the Car license recognition side being combined based on wireless location triggering and laser triggering
Case is taken pictures in such a way that the trigger signal of the location information of vehicle and laser is combined to trigger camera, with
This reduces false triggering, so that system resource is reasonably utilized, to improve the efficiency of system；And more vehicles are entered simultaneously and are touched
When sending out region, Car license recognition is triggered by wireless location, to reduce the case where leakage is clapped, improves the success rate of Car license recognition.
The ETC lane systems of the embodiment of the present application are applied under MLFF scenes, i.e., are not provided on the road of vehicle pass-through
Road toll facility, vehicle can be travelled at toll station with the state of free flow, and facility (such as the trackside of toll station
Unit R SU) it is erected on the portal frame above track, as shown in Figure 1, and missing the stop the OBU installed on vehicle by radio communication
Mode complete charge transaction, vehicle can (including press track, standdle carrier road and become track) be logical in any way according to normal speed
Cross toll station.
Since the antenna coverage areas of RSU is limited, also there is certain limit in the triggering region of laser, entire in order to cover
Road needs to lay mutiple antennas and multiple lasers according to road width to realize ETC, and in order to preferably capture with
Identify car plate, the transmitting antenna and a video camera of a laser, RSU are laid in generally track, such as Fig. 1 institutes
Show.
In the MLFF ETC lane systems of the embodiment of the present application, in order to make ETC system not merchandise blind area, the antenna of RSU
Transverse direction (i.e. horizontal direction shown in Fig. 1) transaction area be overlapped mutually in the critical zone in adjacent two track；Similarly, the bat of video camera
It is also overlapped mutually in the critical zone of adjacent lane according to the triggering region of region and laser.So when vehicle enters antenna rf area
Domain and when being traded by OBU and antenna, it is possible to which more antennas on different tracks can be received by what same OBU was returned
Data.Based on this, a kind of method being accurately positioned OBU is provided in the MLFF ETC lane systems of the embodiment of the present application.Specifically
Ground, according to the data for the same OBU that each antenna receives, calculating the coordinate of the OBU, (computational methods can refer to existing related skill
Art realize), at this time calculated coordinate be all using each center of antenna point perpendicular to the ground as origin, it is then, several using plane
The coordinate calculated, is converted into the coordinate in same plane, such as with Far Left track (track 1 shown in Fig. 1) by what knowledge
Crosspoint with portal frame is origin, as shown in Fig. 2, effective by carrying out data to the multigroup same plane coordinate converted
Judge, excludes error-value, average value is calculated further according to all virtual values, so as to be precisely calculated the position of outgoing label
It sets.
In addition, in order to make RSU and OBU have enough exchange hours, longitudinal (the vehicle rows of the characterization of arrow shown in Fig. 1 of DSRC
Sail direction, the vehicle heading of Fig. 2) control area need it is long, because of the coordinate information of day line computation vehicle and complete
The regular hour is needed at transaction, so the initial position in Car license recognition region is less than the initial position of transaction area；Moreover,
When in order to make laser be triggered, vehicle is in shot region, so the initial position of the longitudinal region of triggering will be slightly less than
The initial position of shot region, as shown in Figure 3.
The application is described in further detail below by specific implementation mode combination attached drawing.
In one embodiment of the application, the systems of entire multilane free flow ETC toll collection systems composition as shown in figure 4, its
Main includes industry control subsystem, dedicated short-range communication (DSRC, Dedicated Short Range Communications)
Subsystem, video intelligent recognition subsystem, in another embodiment, which can also include remote monitoring subsystem.Obviously, more
Track free flow ETC the lane in which the drivers should pay fees systems are to be included in the parts the OBU removal of DSRC subsystems, describe, here will for convenience
Lane system combines the OBU for being installed on vehicle, forms entire multilane free flow ETC toll collection systems.
The course of work of multilane free flow ETC toll collection systems generally can be：When the vehicle for being equipped with OBU passes through ETC
When the control area of system, RSU completes information exchange with interior OBU after safety certification, forms transaction record；And trackside
Equipment completes the positioning of vehicle；The laser triggering vehicle image in video intelligent recognition subsystem is captured equipment and is carried out simultaneously
It captures, identifies the number-plate number；Then, transaction record, vehicle location information, vehicle image and license plate recognition result are uploaded to work
Control subsystem.Industry control subsystem carries out comprehensive matching to information, and according to matching result, formation is complete to cross vehicle transaction record conduct
As a result foundation, or carry out artificial illegal vehicle payment and force law enforcement.
The equipment that industry control subsystem generally includes is industrial personal computer (also referred to as driveway controller, track computer), industry routing
Device, industrial switch and 3G module etc., to realize transaction record storage, vehicle/car plate picture storage, camera/laser
The work(such as communication interface, DSRC subsystem communications interface, remote monitoring channel interface, automatic inspection matching and track logic control
Energy.
DSRC subsystems are realized based on dedicated short-range communication, the equipment such as OBU, RSU array are generally included, to realize
Congestion-pricing is deducted fees the functions such as flow, transaction record upload, wireless location.RSU may include antenna controller, read-write antenna,
Position the components such as antenna.These components can all be mounted on portal frame on, can also antenna controller and antenna it is separately positioned, example
If antenna controller setting is in roadside, and read-write antenna and positioning antenna installation are on portal frame.Day line traffic control in the present embodiment
Device processed can be made of the industrial personal computer of industry control subsystem, and in another realization, embedded technology may be used by antenna controller
Function is embedded into antenna itself.The communication between road, vehicle may be implemented in DSRC subsystems, completes the data exchange of charge transaction,
It is also equipped with the accurate positioning function to OBU simultaneously, as previously indicated.In addition, in another realization, by the communication of RSU and OBU,
RSU can obtain the vehicle type information of its storage from OBU.
The capital equipment of video intelligent recognition subsystem is related to video camera, light compensating lamp and wagon detector (for example, by using sharp
Light, echelette etc. carry out vehicle), the function of specific implementation includes track following, Car license recognition, vehicle pictures are captured and vehicle
Type identification etc..The control unit of the subsystem can be that the industrial personal computer of industry control subsystem is constituted in the present embodiment, in another realization,
Embedded technology may be used, corresponding control function is embedded into wagon detector and/or camera itself.
In a kind of realization, wagon detector uses scanning type laser sensor.First laser earthward it is continuous ceaselessly
Emit laser signal, and relevant control unit is sent on ground or the reflected laser signal of vehicle and handled, does not have
When vehicle enters the triggering region of laser, reflected laser signal has vehicle entrance entirely by ground return
When the triggering region of laser, front of the car entered, in this period of time for leaving of rear end, and ground return and vehicle reflection swash
The energy of optical signal is different, by the energy variation for analyzing laser signal, it may be determined that goes out to have vehicle to drive into triggering region.Accordingly
Laser can generate laser trigger signal, and report industry control subsystem.In another realization, if there is vehicle passes through laser triggering
Region, according to reflected laser signal, is converted into light in this period of time that front of the car enters, rear end is left
The processing such as electric signal is filtered, amplifies, analog-to-digital conversion carry out energy spectrum analysis by the information of frequency domain, can calculate vehicle
Length, height, width coordinate, to obtain the appearance profile of vehicle, and can thus automatically identify type of vehicle.
For video camera, the operations such as video capture and Car license recognition are substantially carried out, relevant control unit can be by work
The industrial personal computer for controlling subsystem is constituted, and can also use embedded technology that will capture control function insert camera such as high-definition camera
Machine itself.To realize Car license recognition, image processing software can be installed in video camera or its control unit and character recognition is soft
Part.
The elements of a fix information (i.e. vehicle position information) and laser that industry control subsystem is reported according to DSRC subsystems
The laser trigger signal of upload judges that the shooting area of video camera whether there is vehicle, and if so, control video camera carries out
Video capture.Obtained image is captured after image procossing and character recognition, the information such as car plate color, number can be obtained.
Remote monitoring subsystem can use existing server in the related technology, can be used for above each subsystem
Equipment running status monitoring, the information storage of various handling results, big data analysis, artificial inspection is than equity.It is realized one
In, the driveway controller of industry control subsystem is responsible for collecting the input information for handling above-mentioned correlation subsystem, with the receipts at the scene of completing
Take process of exchange, transaction results can pass through network transmission to remote monitoring subsystem or background computer charge system.
In another embodiment, the candid photograph control of Car license recognition is carried out by the way of vehicle running orbit.It is specific next
It says, in vehicle into portal frame driving process, the coordinate information of each new definition can be sent to industry control subsystem by DSRC subsystems
System, industry control subsystem form the running orbit of vehicle according to the coordinate information of upload.When vehicle enters the triggering region of laser
When, laser uploads trigger signal and gives industry control subsystem, industry control subsystem according to the ordinate of the elements of a fix information of upload and
Whether laser, which has, uploads both trigger signals to judge that shot region whether there is vehicle, is formed in combination with location information
Running orbit mark determines to be taken pictures by which camera.When vehicle is located at track centre position, then there was only this track laser
Device is triggered, and industry control subsystem takes pictures the camera for only controlling this track according to location information.When track is across road
When driving, although the laser in adjacent two track can all be triggered, industry control subsystem can according to the running orbit of vehicle come
It determines that several cameras is needed to take pictures.It is appreciated that the judgement across road can be sentenced according to the abscissa of the elements of a fix
Disconnected vehicle entire road section lateral specific location, in conjunction with the width in every road, you can judge vehicle whether across road.This
In there are following situations：
1), vehicle straight across road when driving, determined by which track according to the ratio in two tracks occupied by vehicle body
Camera take pictures, if a greater part of vehicle body falls into track B, control the camera above the B of track on portal frame and captured.
2) when, vehicle is inclined cross, according to the direction of headstock, to determine that the camera in that track is taken pictures.For the direction of headstock
Judge, can be：According in vehicle travel process, location information constantly can be transmitted to industry control subsystem by antenna, in this way
Industry control subsystem can depict the running orbit of vehicle according to the coordinate information of difference, it is possible thereby to judge that headstock is honest
Traveling, or tiltedly travel to the left or to the right.
The method being combined by location information and laser trigger signal can be effectively prevented camera by false triggering
The case where.In addition, when vehicle across road when driving, determine that the camera in which road is taken pictures according to the running orbit of vehicle,
To improve the efficiency of system Car license recognition.
In another embodiment, when vehicle A enters the triggering region of laser, laser can upload a trigger signal
Industry control subsystem is given, when vehicle A does not leave the triggering region of laser also, vehicle B also enters the triggering region of laser at this time,
Since vehicle A leaves the triggering region of laser not yet, in traditional technical solution, laser false triggering in order to prevent, when
When vehicle B enters back into triggering region, laser is will not to generate trigger signal again, and scene is as shown in Figure 5.In this case, just have
The case where causing leakage to clap vehicle B.And in the embodiment of the present application, in this case, industry control subsystem is according to the operation of vehicle A
Vehicle A is also in the triggering region of laser known to trace information, when vehicle B drives into the triggering region of laser again, although swashing
Light device does not generate trigger signal, but industrial personal computer is taken pictures according to the location information of vehicle B to trigger camera.Have in this way
The case where preventing vehicle B to be clapped by leakage of effect.To improve the Car license recognition success rate of system.
Based on above example it is found that the multilane free flow electric non-stop toll track system that the embodiment of the present application proposes
Triggering of the system based on wireless location information and wagon detector is combined, to control video capture and Car license recognition, thus
Solve the problems, such as laser false triggering and solution existing when ambient enviroment is severe in existing free flow ETC toll collection systems
Phenomenon is clapped in the leakage that Car license recognition is carried out based on video flowing, and the embodiment of the present application can reduce the number of false triggering, improve identification
Success rate；When more vehicles enter triggering region simultaneously, the candid photograph and identification of license plate image are triggered by wireless location, to subtract
The case where few leakage is clapped.
Correspondingly, the embodiment of the present application is it is also proposed that a kind of based in multilane free flow Electronic Toll Collection for Lane System
Car plate snapshot recognition method.In the method, as shown in fig. 6, the board units that industry control subsystem combination roadside unit reports
Coordinate information and wagon detector upload vehicle detection trigger signal judged, determining vehicle be in shooting area
Behind domain, video capture and identification that corresponding video camera carries out vehicle are controlled.
It in an embodiment of the present invention, can by applying above-mentioned multilane free flow Electronic Toll Collection for Lane System
Identification is captured with the charge and car plate of realizing multilane free flow electronic non-parking, correlation technique flow is described as follows：
RSU emits periodical downlink signal to antenna coverage areas by antenna (such as read-write antenna), if into
OBU is installed, then OBU is waken up by downlink signal, and RSU is communicated with OBU, and passes through antenna (example on the vehicle of antenna coverage areas
Such as position antenna) uplink signal that OBU is returned is received, RSU verifies the legitimacy of OBU, if OBU is legal OBU,
Read-write antenna continuation is communicated with OBU to complete charge transaction.No matter whether OBU is legal, and positioning antenna all detects that OBU is returned
The intensity of the uplink signal returned, RSU orient the positions OBU according to the uplink signal strength, then will charge transaction results, OBU
Positioning gained coordinate information (such as including position and positioning time) etc. reports industry control subsystem.
While RSU is communicated with OBU, wagon detector has detected whether that vehicle enters its and triggers region, when there is vehicle
Into triggering region, wagon detector generates vehicle detection trigger signal, which can carry vehicle location, triggered time etc.
Information, and the vehicle detection trigger signal is uploaded into industry control subsystem.In one implementation, wagon detector can also detect that vehicle
Shape, to determine type of vehicle (such as large car, in-between car, compact car) and vehicle type information is uploaded industry control subsystem
System.Certain type of vehicle can also be by RSU and OBU communication process, RSU is read from the OBU for being stored with vehicle type information
Industry control subsystem is uploaded to type of vehicle, and by type of vehicle.
Relevant way that industry control subsystem is related to according to such as previous embodiment (such as location information and vehicle in conjunction with RSU
Trigger signal is detected, or combines the vehicle driving trace generated according to RSU location informations and vehicle detection trigger signal, etc.
Deng), trigger video capture vehicle image and control video intelligent recognition subsystem that Car license recognition is carried out to the image of candid photograph, depending on
License plate recognition result and corresponding image of capturing are uploaded industry control subsystem by frequency intelligent recognition subsystem.
Information of vehicles that industry control subsystem reads the RSU vehicle location informations uploaded and RSU from OBU (including license plate number
Code, vehicle etc.) and video intelligent recognition subsystem upload license plate recognition result, capture the time and capture image, judge two
Whether the number-plate number of person matches, if it does, then generating has Transaction Information and that captures information crosses vehicle record, if not
Match, the information of upload can be transferred to remote monitoring subsystem and carry out subsequent processing.
ETC system can be applied to urban congestion charge such as, city road and bridge receipts under the MLFF scenes that the embodiment of the present application proposes
Take.The case where scheme proposed by the embodiment of the present application can reduce system false triggering reduces the case where leakage is clapped, to carry
The success rate of high Car license recognition.
It will be understood by those skilled in the art that all or part of step of various methods can pass through in the above embodiment
Program instructs related hardware to complete, which can be stored in a computer readable storage medium, storage medium can wrap
It includes：Read-only memory, random access memory, disk or CD etc..
The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen
Specific implementation please is confined to these explanations.For those of ordinary skill in the art to which this application belongs, it is not taking off
Under the premise of conceiving from the application, a number of simple deductions or replacements can also be made.
Claims (8)
1. a kind of multilane free flow Electronic Toll Collection for Lane System, which is characterized in that including being based on dedicated short-range communication
The roadside unit of realization, the video intelligent recognition subsystem with wagon detector and video camera and respectively with the trackside
The industry control subsystem that unit is connected with the video intelligent recognition subsystem signal；
The roadside unit includes antenna, and the roadside unit searches for vehicle-mounted list by the antenna in antenna coverage areas
Member carries out wireless location to the board units searched, and positioning gained coordinate information is reported the industry control subsystem；
When the wagon detector drives into vehicle detection triggering region for the vehicle residing for the board units, vehicle inspection is generated
Trigger signal is surveyed, and the vehicle detection trigger signal is uploaded into the industry control subsystem；
What the coordinate information and the wagon detector that the industry control subsystem is used to be reported according to the roadside unit uploaded
Vehicle detection trigger signal, judges whether the vehicle is in the shooting area of the video camera, if the vehicle is in described
Shooting area, then the industry control subsystem controls corresponding video camera shooting vehicle, obtains vehicle image；
The video intelligent recognition subsystem carries out Car license recognition according to the vehicle image；
Wherein, the coordinate information of each new definition is uploaded the industry control subsystem, the industry control subsystem by the roadside unit
The running orbit of the vehicle is formed according to the coordinate information of upload；The industry control subsystem is judging whether the vehicle is in
While the shooting area of the video camera, determine that controlling corresponding video camera is shot according to the running orbit.
2. the system as claimed in claim 1, which is characterized in that the industry control subsystem is additionally operable to according on the roadside unit
The elements of a fix of biography judge with the presence or absence of at least two vehicles in same vehicle detection triggering region, if it is judged that described same
One vehicle detection, which triggers, has at least two vehicles in region, then enters the vehicle in same vehicle detection triggering region after
Location information controls corresponding video camera and is shot the rear vehicle for triggering region into same vehicle detection to obtain
Vehicle image.
3. the system as claimed in claim 1, which is characterized in that at least side all the way is respectively set on each track in multilane
The antenna of unit, at least a video camera and at least a wagon detector, the antenna of the roadside unit in adjacent two track covers
Cover area is overlapped mutually in two track critical zones, and the shooting area of the video camera in adjacent two track is in two track critical zone phases
The vehicle detection triggering region of mutually superposition, the wagon detector in adjacent two track is overlapped mutually in two track critical zones.
4. system as claimed in claim 3, which is characterized in that the industry control subsystem is additionally operable to according to the institute on each track
The location information for stating the same board units that roadside unit reports, with the center of the antenna of each roadside unit point perpendicular to the ground
For coordinate origin, the coordinate of the board units is calculated, calculated coordinate is converted into the coordinate in same plane, it is described
Coordinate in same plane is the crosspoint of the position set up with the roadside unit with leftmost side track or rightmost side track
For origin, the judgement for carrying out valid data to the multigroup same plane coordinate converted obtains virtual value, root to reject error-value
Average value is calculated according to virtual value, the average value is the coordinate position of the board units.
5. the system as claimed in claim 1, which is characterized in that antenna cover fore-and-aft distance covering vehicle detection triggering it is longitudinal away from
From with vehicle identification fore-and-aft distance, antenna covering fore-and-aft distance is the antenna coverage areas along the vehicle traveling side
Upward distance, the vehicle detection triggering fore-and-aft distance are that the vehicle detection triggers region along the vehicle traveling direction
On distance, the vehicle identification fore-and-aft distance be the shooting area in the distance in the vehicle traveling direction.
6. the system as claimed in claim 1, which is characterized in that further include remote monitoring subsystem, respectively with the trackside
Unit, the video intelligent recognition subsystem are connected with the industry control subsystem signals, for monitor respectively the roadside unit,
The operating status of the video intelligent recognition subsystem and the industry control subsystem stores the roadside unit, described regards respectively
The handling result of frequency intelligent recognition subsystem and the industry control subsystem.
7. the car plate in a kind of multilane free flow Electronic Toll Collection for Lane System as described in claim any one of 1-6 is known
Other method, described method includes following steps：
Industry control subsystem receives the location information for the board units that roadside unit reports, and also receives the vehicle that wagon detector uploads
Detect trigger signal；
The industry control subsystem judges according to the location information and the vehicle detection trigger signal residing for the board units
Whether vehicle is in shooting area, if the vehicle is in the shooting area, controls corresponding video camera and shoots the vehicle
, vehicle image is obtained, the vehicle image is used to carry out Car license recognition for the video intelligent recognition subsystem；
The location information that the industry control subsystem reports every time according to the roadside unit forms the operation rail of the vehicle
Mark；
The industry control subsystem is while judging whether the vehicle is in the shooting area of the video camera, according to the fortune
Row track determines that controlling corresponding video camera is shot.
8. the method for claim 7, which is characterized in that the method further includes following steps：
The elements of a fix that the industry control subsystem is uploaded according to the roadside unit, judging that same vehicle detection triggers in region is
It is no to there are at least two vehicles, if it is judged that there are at least two vehicles in the same vehicle detection triggering region, then root
According to the location information of the rear vehicle for triggering region into same vehicle detection, corresponding video camera is controlled to described rear into same
The vehicle in vehicle detection triggering region is shot to obtain vehicle image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030817.4A CN105678852B (en) | 2015-12-31 | 2015-12-31 | Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511030817.4A CN105678852B (en) | 2015-12-31 | 2015-12-31 | Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105678852A CN105678852A (en) | 2016-06-15 |
| CN105678852B true CN105678852B (en) | 2018-08-14 |
Family
ID=56298365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511030817.4A Active CN105678852B (en) | 2015-12-31 | 2015-12-31 | Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105678852B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373427B (en) * | 2016-09-30 | 2022-07-15 | 深圳市金溢科技股份有限公司 | Parking management method and parking management system |
| CN106960477A (en) * | 2017-05-02 | 2017-07-18 | 哈尔滨理工大学 | A kind of Auto Fare Collection Parking System recognized based on license plate image |
| CN109144042B (en) * | 2017-06-19 | 2023-09-05 | 上海蔚来汽车有限公司 | Method and device for controlling the travel of a vehicle in a toll gate area |
| CN107622535B (en) * | 2017-07-03 | 2019-12-31 | 深圳市金溢科技股份有限公司 | Path identification system, path identification method thereof and readable storage medium |
| CN108510734A (en) * | 2018-03-30 | 2018-09-07 | 深圳市金溢科技股份有限公司 | A kind of information of vehicles matching process of roadside unit and a kind of roadside unit |
| CN108932616B (en) * | 2018-06-21 | 2021-12-07 | 上海旺链信息科技有限公司 | Electronic passage payment switching platform |
| CN111856611A (en) * | 2019-04-17 | 2020-10-30 | 阿里巴巴集团控股有限公司 | Trigger detection method, device and system |
| CN110827423B (en) * | 2019-09-25 | 2022-06-21 | 招商华软信息有限公司 | ETC portal control device for realizing uninterrupted operation and control method thereof |
| CN110910519B (en) * | 2019-11-08 | 2022-05-17 | 北京万集科技股份有限公司 | Information acquisition method and device, free flow charging system and storage medium |
| CN111079782B (en) * | 2019-11-08 | 2023-09-01 | 北京万集科技股份有限公司 | Vehicle transaction method and system, storage medium and electronic device |
| CN111340966B (en) * | 2019-12-12 | 2022-03-08 | 山东中创软件工程股份有限公司 | Vehicle detection method, device and system |
| CN111126374A (en) * | 2019-12-23 | 2020-05-08 | 宁波市数极信息技术有限公司 | Highway ETC passenger flow image acquisition method based on big data |
| CN113269015B (en) * | 2020-02-17 | 2024-05-03 | 杭州海康威视系统技术有限公司 | Vehicle type recognition method, device, electronic equipment, system and storage medium |
| CN111260812B (en) * | 2020-03-11 | 2022-04-19 | 广西信路威科技发展有限公司 | Vehicle detection device and method based on RSU antenna, radar and image recognition |
| CN111582174B (en) * | 2020-05-09 | 2023-07-25 | 广西信路威科技发展有限公司 | RSU and multi-target radar detection result matching method based on image recognition |
| CN112907771B (en) * | 2021-01-18 | 2022-08-26 | 山东通维信息工程有限公司 | Method for controlling multiple ETC antennas by one controller |
| CN115376216B (en) * | 2021-05-19 | 2024-03-01 | 广州汽车集团股份有限公司 | Misuse-preventing vehicle ETC passing method, device and system |
| CN115880797A (en) * | 2021-09-28 | 2023-03-31 | 北京万集科技股份有限公司 | Vehicle evidence obtaining method, device and system based on V2X |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183126U (en) * | 2011-05-11 | 2012-04-04 | 广州新软计算机技术有限公司 | ETC track system having multiple transaction means |
| CN102622783A (en) * | 2012-03-29 | 2012-08-01 | 北京速通科技有限公司 | Multilane free-flow electronic toll collection method based on accurate position match |
| CN202443514U (en) * | 2012-02-29 | 2012-09-19 | 毛振刚 | Multilane free movement electronic road toll collection system |
| CN103150772A (en) * | 2013-02-20 | 2013-06-12 | 北京速通科技有限公司 | Multi-lane free flow electronic toll collection system arranged on side of road |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2524148T3 (en) * | 2012-05-03 | 2014-12-04 | Kapsch Trafficcom Ag | Procedure and devices for the identification of a vehicle that uses a place |
-
2015
- 2015-12-31 CN CN201511030817.4A patent/CN105678852B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202183126U (en) * | 2011-05-11 | 2012-04-04 | 广州新软计算机技术有限公司 | ETC track system having multiple transaction means |
| CN202443514U (en) * | 2012-02-29 | 2012-09-19 | 毛振刚 | Multilane free movement electronic road toll collection system |
| CN102622783A (en) * | 2012-03-29 | 2012-08-01 | 北京速通科技有限公司 | Multilane free-flow electronic toll collection method based on accurate position match |
| CN103150772A (en) * | 2013-02-20 | 2013-06-12 | 北京速通科技有限公司 | Multi-lane free flow electronic toll collection system arranged on side of road |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105678852A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105678852B (en) | Multilane free flow Electronic Toll Collection for Lane System and its licence plate recognition method | |
| CN101510356B (en) | Video detection system and data processing device thereof, video detection method | |
| CN106875498B (en) | A kind of ETC system that can be accurately positioned vehicle and communication zone is set dynamically | |
| RU2698610C2 (en) | Method and processing unit for control over traffic monitoring system | |
| KR102155753B1 (en) | Two-way traffic information collecting system and method thereof | |
| CN105427614A (en) | Model classification system and method | |
| CN104574540A (en) | Electronic toll collection system and method | |
| CN102332209A (en) | Automobile violation video monitoring method | |
| CN103021035A (en) | Electronic toll collection system using laser radar in long communication area | |
| CN103400500A (en) | Vehicle information data acquisition device and method | |
| CN107527506A (en) | Embedded radar monitors recombination optics and radar monitoring capturing system and method | |
| CN108133599A (en) | A kind of slag-soil truck video frequency identifying method and system | |
| US9666002B2 (en) | Method for operating a vehicle barrier | |
| KR102067006B1 (en) | System and Method for Managing Vehicle Running Information | |
| CN205334557U (en) | ETC system of ability accurate positioning vehicle and dynamically arrange communication zone | |
| JP6139088B2 (en) | Vehicle detection device | |
| CN105046966A (en) | System and method for automatically detecting illegal parking behaviors in drop-off areas | |
| KR102093237B1 (en) | Vehicle classification system using non-contact automatic vehicle detectior | |
| CN113851017A (en) | Pedestrian and vehicle identification and early warning multifunctional system based on road side RSU | |
| JP2808513B2 (en) | Electronic toll collection system | |
| CN106023599A (en) | Height and width overlimit law violation snapshot electronic police system and control method thereof | |
| KR101882888B1 (en) | Method for providing panorama image in multi-lane hi-Pass system | |
| KR102459906B1 (en) | System for detecting passengers in vehicle using dual band infrared camera, and method for the same | |
| KR20060102889A (en) | System and method for regulating violation of exclusive auto road | |
| KR102163504B1 (en) | Toll Unpaid Prevention System for Detecting an Unpaid Vehicles in Expressway Limit Vehicle Surveillance System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |