CN106875697B - Radio frequency identification and video identification comparison method and system - Google Patents
Radio frequency identification and video identification comparison method and system Download PDFInfo
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- CN106875697B CN106875697B CN201710259606.0A CN201710259606A CN106875697B CN 106875697 B CN106875697 B CN 106875697B CN 201710259606 A CN201710259606 A CN 201710259606A CN 106875697 B CN106875697 B CN 106875697B
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- frequency identification
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
- G06V20/54—Surveillance or monitoring of activities, e.g. for recognising suspicious objects of traffic, e.g. cars on the road, trains or boats
Abstract
The present invention provides a kind of radio frequency identification and video identification comparison method and system, and wherein radio frequency identification and video identification comparison method include the following steps: to obtain the first information of vehicles for handing over all-purpose camera acquisition；The second information of vehicles and corresponding RSSI value that vehicle electron identifying returns are obtained by radio-frequency identification reader/writer；The RSSI value returned according to the vehicle electron identifying chooses the vehicle electron identifying and corresponds to vehicle in the friendship all-purpose camera identification range, the second information of vehicles that the vehicle electron identifying returns；By comparing first information of vehicles with second information of vehicles to determine whether information of vehicles matches.The present invention improves the comparison efficiency between radio frequency identification and video identification, the normal comparison being adapted in various situations.
Description
Technical field
The present invention relates to technical field of RFID more particularly to a kind of radio frequency identification and video identification comparison method and it is
System.
Background technique
Currently, the management of vehicle obtains usually using handing over all-purpose camera to carry out video identification to the iron license plate on vehicle
The advantages of information of vehicles such as the pick-up trade mark, iron license plate, is that intuitively security personnel need not carry special equipment and can differentiate
License plate number.But there are certain limitations under the influence of environment for friendship all-purpose camera, it is most important that, iron license plate is got on the bus
The trade mark usually can artificially be altered, and the phenomenon that false fake license plate vehicle is spread unchecked in traffic administration occur, bring very to social stability
Big hidden danger.The development of Radio Frequency Identification Technology provides new approach for the identification of vehicle identification, because related to vehicle identification
Information of vehicles be usually all stored in radio-frequency identification reader/writer cooperation vehicle electron identifying in, so being not easy to be repaired by people
Change.In order to integrate radio frequency identification and the mutual feature of video identification, after radio frequency identification and video identification being implemented simultaneously
It is mutually compared again, still, due to radio frequency identification and the respective performance of video identification, the time point for causing the two to identify is different
It causes, the two identifies that the information of vehicles of same identity can not be compared directly, leads to the advantage that cannot play the two.
Chinese invention patent ZL201410039721.3 discloses a kind of realization side that radio frequency identification is compared with Car license recognition
Method looks for whether the same identity information of vehicles being mutually matched in specified residence time by the way that residence time is arranged, if
Successful match then illustrates that vehicle identification is normal.But the setting of residence time is needed in view of different complex environments, in order to suitable
The difference for answering recognition time point between radio frequency identification and video identification under different situations is needed the longer of residence time setting,
It can bring about the burden being mutually matched in this way, meanwhile, the case where if there is vehicle long-time congestion, it also will cause normal vehicle
It mismatches, comparison result is abnormal.
Summary of the invention
The purpose of the present invention is to provide a kind of radio frequency identifications and video identification comparison method and system, solve existing skill
The technical issues of comparison efficiency is not high between radio frequency identification and video identification in art, cannot normally compare when traffic congestion.
In order to solve the above-mentioned technical problem, a kind of radio frequency identification of the invention and video identification comparison method, including obtain
The first information of vehicles of all-purpose camera acquisition is handed over, the radio frequency identification and video identification comparison method further include following steps:
The second information of vehicles and corresponding RSSI value that vehicle electron identifying returns are obtained by radio-frequency identification reader/writer；Root
The RSSI value returned according to the vehicle electron identifying chooses the vehicle electron identifying and corresponds to vehicle in the friendship all-purpose camera
In identification range, the second information of vehicles of the vehicle electron identifying return；
By comparing first information of vehicles with second information of vehicles to determine whether information of vehicles matches.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification comparison method, RSSI parameter list is inquired,
The correspondence RSSI that radio frequency identification signal returns in the friendship all-purpose camera identification range is stored in the RSSI parameter list
Whether value, the RSSI value for judging that the vehicle electron identifying returns are in the threshold range that the RSSI parameter list corresponds to RSSI value
Whether interior the second information of vehicles returned with the determination vehicle electron identifying is chosen.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification comparison method, by being arranged in the friendship
Reference electronic label in all-purpose camera identification range obtains the benchmark RSSI value returned, judges that the vehicle electron identifying returns
Whether the RSSI value returned is in second returned in the threshold range of the benchmark RSSI value with the determination vehicle electron identifying
Whether information of vehicles is chosen.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification comparison method, the reference electronic label
Including the first reference electronic label and the second reference electronic label, the first reference electronic label and second reference electronic
Lateral distance between label at least more than vehicle width and/or fore-and-aft distance at least more than vehicle length.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification comparison method, recognition cycle, In are set
The primary vehicle electron identifying is only chosen in recognition cycle corresponds to vehicle in the friendship all-purpose camera identification range, it is described
The second information of vehicles that vehicle electron identifying returns.
In order to solve the above-mentioned technical problem, a kind of radio frequency identification of the invention and video identification Compare System, including first
Acquiring unit, for obtaining the first information of vehicles for handing over all-purpose camera acquisition, the radio frequency identification is compared with video identification is
System further include:
Second acquisition unit, for obtaining the second information of vehicles that vehicle electron identifying returns by radio-frequency identification reader/writer
And corresponding RSSI value；The RSSI value selection vehicle electron identifying returned according to the vehicle electron identifying corresponds to vehicle and exists
In the friendship all-purpose camera identification range, the second information of vehicles of the vehicle electron identifying return；
Comparing unit, for by comparing first information of vehicles and second information of vehicles to determine information of vehicles
Whether match.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification Compare System, the second acquisition unit
RSSI parameter list is inquired, is stored with the radio frequency identification signal in the friendship all-purpose camera identification range in the RSSI parameter list
It is corresponding to judge whether the RSSI value of the vehicle electron identifying return is in the RSSI parameter list for the correspondence RSSI value of return
Whether chosen in the threshold range of RSSI value with the second information of vehicles that the determination vehicle electron identifying returns.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification Compare System, the second acquisition unit
The benchmark RSSI value returned is obtained by the reference electronic label being arranged in the friendship all-purpose camera identification range, judges institute
Whether the RSSI value for stating vehicle electron identifying return is in the threshold range of the benchmark RSSI value with the determination automobile electricity
Whether the second information of vehicles that sub-mark returns is chosen.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification Compare System, the reference electronic label
Including the first reference electronic label and the second reference electronic label, the first reference electronic label and second reference electronic
Lateral distance between label at least more than vehicle width and/or fore-and-aft distance at least more than vehicle length.
As the further improvement of the present invention above-mentioned radio frequency identification and video identification Compare System, the second acquisition unit
Recognition cycle is set, the primary vehicle electron identifying is only chosen in recognition cycle and corresponds to vehicle in the friendship all-purpose camera
In identification range, the second information of vehicles of the vehicle electron identifying return.
Compared with prior art, the present invention obtains corresponding second vehicle of specific RSSI value by radio-frequency identification reader/writer and believes
Breath is compared, to judge the matching of information of vehicles with the first information of vehicles for handing over all-purpose camera to obtain.The present invention improves
Comparison efficiency between radio frequency identification and video identification, the normal comparison being adapted in various situations.
After the detailed description of embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more
Add clear.
Detailed description of the invention
In order to illustrate more clearly of embodiment of the present invention or the technical solution of the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it is therefore apparent that the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is radio frequency identification and video identification comparison method flow chart in an embodiment of the present invention.
Fig. 2 is that radio frequency identification and video identification compare application scenarios schematic diagram in an embodiment of the present invention.
Fig. 3 is that radio frequency identification and video identification compare application scenarios schematic diagram in an embodiment of the present invention.
Fig. 4 is radio frequency identification and video identification Compare System schematic diagram in an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to various embodiments shown in the accompanying drawings.But these embodiments are not
The limitation present invention, structure that those skilled in the art are made according to these embodiments, method or change functionally
It changes and is included within the scope of protection of the present invention.
It should be noted that in various embodiments, identical label or label may be used, but these not generations
Table structure or absolute connection relationship functionally.Also, also not generation such as " first " that is previously mentioned in each embodiment, " second "
Table structure or absolute differentiation relationship functionally, these are merely for convenience of description.
As shown in Figure 1, radio frequency identification and video identification comparison method flow chart in an embodiment of the present invention.Radio frequency identification
Include step S1 with video identification comparison method, is mainly used for obtaining the first information of vehicles；Step S2 is mainly used for acquisition second
Information of vehicles；Step S3 is mainly used for that the first information of vehicles and the second information of vehicles is compared.It should be noted that step
Sequencing, including various tactic possibility are not limited between rapid S1 and step S2.In step sl, the first vehicle is believed
Breath is by handing over all-purpose camera to obtain, and in step s 2, the second information of vehicles is obtained by radio-frequency identification reader/writer,
Under normal conditions, identify that difference of the same identity vehicle due to identifying distance, the recognition speed of radio-frequency identification reader/writer compare traffic
It is fast with the recognition speed of video camera, therefore step S2 is usually completed before step S1, but is also not precluded within more special feelings
Under condition, such as situations such as weather influence, step S1 is completed or is completed at the same time before step S2.
In step sl, the first information of vehicles for handing over all-purpose camera acquisition is obtained, all-purpose camera is handed over to know by video
Other means analyze the iron license plate image in video, obtain corresponding license plate number, such as Soviet Union A12345.But the first vehicle
The information content is not limited thereto, and can also specifically include the video identifications such as logo, type of vehicle, body color, can also be right
Whether the photo of vehicle the information such as is reequiped and is retained.As shown in Fig. 2, some section 10 is provided with friendship universal camera shooting in road
Machine 11 is provided with portal frame in section 10, hands over all-purpose camera 11 that the upper of road is arranged in by portal frame under normal circumstances
Side.Due to the focal length setting of friendship all-purpose camera 11, necessarily there is certain identification range, and in order to clearly read iron
The image of license plate processed, identification range is relatively limited, only when vehicle enter hand over all-purpose camera 11 identification range in, vehicle iron
License plate number on license plate processed can be just collected.
In step s 2, the second information of vehicles and correspondence that vehicle electron identifying returns are obtained by radio-frequency identification reader/writer
RSSI(Received Signal Strength Indication, received signal intensity instruction) value；It is obtained according to RSSI value
Obtain specifically the second information of vehicles.As described above, radio-frequency identification reader/writer be to hand over all-purpose camera identification vehicle identification into
One step supplement, it and vehicle electron identifying cooperate, and the working frequency range of radiofrequency signal can be within the scope of 920MHz-925MHz, but
It is not limited thereto.The information in vehicle electron identifying is written and read by radiofrequency signal, for example, license plate number, type of vehicle,
Body color etc. indicate vehicle identification information of vehicles, while can also read the vehicular applications stored in vehicle electron identifying,
The information such as insurance, environmental protection, date of retirement are recorded.Vehicle electron identifying is a kind of radio frequency identification electricity for testing vehicle register identification
Subtab may be mounted on the front windshield of vehicle using passive techniques, pass through the radio-frequency identification reader/writer of face
The radiofrequency signal sended over is activated and feeds back corresponding information of vehicles etc..Radio-frequency identification reader/writer and friendship all-purpose camera
Equally, installation faces the vehicle to come head-on, when the vapour on vehicle on the gantry together with traffic video camera setting
Vehicle electronic mark is within the scope of the lobe of radio-frequency identification reader/writer transceiving radio frequency signal, will normally read automotive electronics
Information in mark.
Radio-frequency identification reader/writer can not only be obtained by handling the radiofrequency signal that vehicle electron identifying is fed back
The information of vehicles etc. for including into radiofrequency signal, while the RSSI value of radiofrequency signal can also be obtained by measuring, RSSI value can
To indicate the distance of signal source to a certain extent, RSSI value is higher, shows that the vehicle electron identifying of feedback signal is closer, RSSI
It is worth smaller, shows that the vehicle electron identifying of feedback signal is remoter.Because vehicle electron identifying is mounted in the front windshield glass of vehicle
On glass, therefore also vehicle can be approximately inferred to from radio-frequency identification reader/writer by the RSSI value that vehicle electron identifying returns
Distance.
As described above, when vehicle electron identifying is within the scope of the lobe of radio-frequency identification reader/writer transceiving radio frequency signal, just
The information in vehicle electron identifying can normally be read.Continue in fact, the reading behavior of radio-frequency identification reader/writer is one
Process will be by radio-frequency identification reader/writer if same vehicle continues for some time within the scope of the lobe of radiofrequency signal
Constantly read same second information of vehicles.And multiple second information of vehicles read under above situation actually all refers to
To specific vehicle identification, purpose be all can with hand over the first information of vehicles of all-purpose camera acquisition be compared
It is right, thus the second information of vehicles of particular vehicle identity only need a record can, choose one of them suitable the
Two information of vehicles can compare well.If choosing radio-frequency identification reader/writer reads particular vehicle identity for the first time the
Two information of vehicles, defect are that radio-frequency identification reader/writer is typically due to the propagation characteristic reading/writing distance of radiofrequency signal farther out,
Very big possible friendship all-purpose camera is the first information of vehicles that can not collect the vehicle identification at this time, if there is congestion shape
Condition will lead to comparison and mistake occurs.When vehicle enters and hands in all-purpose camera identification range, at this time due to radiofrequency signal
Coverage area is wider, and the vehicle electron identifying on vehicle will necessarily be got the second information of vehicles by radio-frequency identification reader/writer, because
This RSSI value that can be returned according to vehicle electron identifying chooses vehicle electron identifying and corresponds to vehicle in friendship all-purpose camera identification
In range, the second information of vehicles of vehicle electron identifying return.Because the second information of vehicles of above-mentioned selection is vehicle in traffic
With video camera identification range internal feedback, so radio-frequency identification reader/writer and all-purpose camera is handed over to read the vehicle of same identity
Information is more consistent on time point, and the upper and lower time difference is simultaneously little, will not read because of an information of vehicles, a vehicle letter
Breath is not read normally and causes the mistake compared.
Specifically, when the second information of vehicles of the multiple same identity obtained in analysis, respectively to their corresponding RSSI
Value is judged, estimates which the second information of vehicles is that corresponding vehicle is handing over all-purpose camera identification range by RSSI value
What internal feedback was returned.Because there is one at a distance from vehicle to radio-frequency identification reader/writer for the RSSI value that vehicle electron identifying returns
A metastable relationship, while it is also relatively-stationary for handing over the identification range of all-purpose camera, so passing through maintenance one
RSSI parameter list, rule of thumb and field engineering calculates the RSSI value that be previously stored can for reference, this RSSI value is automobile
Electronic mark is in the numerical value for handing over the internal feedback of all-purpose camera identification range that should reach to radio-frequency identification reader/writer.Specifically, it looks into
RSSI parameter list is ask, whether the RSSI value for judging that vehicle electron identifying returns is in the threshold value model that RSSI parameter list corresponds to RSSI value
Whether chosen in enclosing with the second information of vehicles that the determination vehicle electron identifying returns.
It should be noted that the manufacturer of vehicle electron identifying is different, since different vendor is to automobile in the application of practice
The optimization direction of electronic mark Technology design is different, and there is one for the variation relation for the RSSI value for causing vehicle electron identifying to return
Determine difference, but generally speaking, there is metastable relationships for the vehicle electron identifying under same design framework.Moreover,
RSSI value is all as the variation of distance is accordingly changed.In addition, since the Setup Type of vehicle electron identifying can also be led
Cause has a certain difference, such as the front windshield height of car is lower, and front windshield more tilts.Therefore in order to
The RSSI value that vehicle electron identifying returns is judged more accurately, it is corresponding to be used in traffic in the RSSI parameter list safeguarded in advance
The RSSI value of video camera identification range internal reference carries out classification according to label manufacturer and Setup Type respectively and provides relevant reference value.
Preferably can be before inquiring RSSI parameter list, it can be by being stored in reading vehicle electron identifying about vehicle electron identifying
Then relevant label manufacturer information and Setup Type information judges according to specific combination selection is corresponding with reference to RSSI value,
Inquire label manufacturer relevant to the vehicle electron identifying and the corresponding RSSI value of Setup Type in RSSI parameter list.RSSI
Parameter list is as shown in the table, and same row indicates same label manufacturer, indicates same Setup Type with a line.First, second, the third difference table
Show different label manufacturers, and then example lists several installation classes for car glass, truck glass, motor bus glass
Type, A, B, C ... are then to represent different label manufacturers and Setup Type is corresponding with reference to RSSI value.Reference RSSI value described in table
It is rule of thumb as described above and field engineering calculates a specific value being previously stored, simply by alphabetical simple in table
Substitute the convenience to express.
When judging the relationship in the RSSI value that vehicle electron identifying returns and RSSI parameter list between reference value, as long as guaranteeing
Difference between the two is in threshold range, i.e., it is believed that the corresponding vehicle of vehicle electron identifying is in the knowledge for handing over all-purpose camera
In other range, mainly there is two o'clock in the reason of being implemented: first, handing over the identification range of all-purpose camera is the road of a distance
Road, so vehicle is likely to be read into before and after the road of this section of distance, and the RSSI value that different location is read into
It can change, second, the RSSI value that the variation of surrounding enviroment also results in vehicle electron identifying return fluctuates.It needs
Illustrate, the reference value stored in RSSI parameter list can be the ginseng of the Best Point in a friendship all-purpose camera identification range
RSSI value is examined, a range is also possible to, that is, is handing over the RSSI value that may be read into all-purpose camera identification range
Set.
In more embodiments, it can also be provided with reference electronic label handing in all-purpose camera identification range,
As shown in Fig. 2, reference electronic label 30 be arranged on road surface, just at hand over all-purpose camera 11 identification range in, benchmark
The vehicle electron identifying installed on electronic tag 30 and front windshield of vehicle is similar and same type of frequency identification electronic
Label, using passive techniques, what is only stored in vehicle electron identifying is information of vehicles, stored in reference electronic label be with
Hand over the grouping information of all-purpose camera, radio-frequency identification reader/writer cooperation.Vehicle 20 hands over the identification of all-purpose camera 11 not entering
May just read by radio-frequency identification reader/writer (not shown) in range, judge at this time vehicle 20 get on the car electronic mark return
RSSI value and reference electronic label 30 return benchmark RSSI value between relationship, it finds that the two difference more very much not in threshold value
In range, the second information of vehicles that radio-frequency identification reader/writer reads vehicle 20 at this time cannot be selected for comparing, because
All-purpose camera is handed over to read the iron license plate on vehicle 20 not yet.If congestion exceeds the regular hour, will lead to compare
To mistake.After vehicle 20 is advanced into the identification range for handing over all-purpose camera 11, due to the automotive electronics on vehicle 20
Mark is leaned on close with reference electronic label 30, therefore they return to the RSSI value of same radio-frequency identification reader/writer and will differ
Less, the first information of vehicles and the second information of vehicles obtained at this time as the basis mutually compared be it is best, so this reality
Mode is applied by judging whether the RSSI value that vehicle electron identifying returns is in the threshold range of benchmark RSSI value to determine vapour
Whether the second information of vehicles that vehicle electronic mark returns is chosen.Preferably, the benchmark RSSI value that reference electronic label 30 returns is made
When to refer to, it is also desirable to it is further to be corrected, as noted previously, as the mark in the vehicle electron identifying source on vehicle 20
Label manufacturer and Setup Type have difference, thus reference electronic label 30 is returned also for different situations benchmark RSSI value or
The RSSI value that vehicle electron identifying returns carries out different amendments, and corresponding modifying factor can be according to label manufacturer and installation
Type carries out classification offer.
As described above, reference electronic label 30 is arranged on road, if vehicle is by just covering reference electronic
When label 30, radio-frequency identification reader/writer cannot normally read reference electronic label 30, also just can there is no benchmark RSSI value
For reference.As shown in figure 3, be provided with radio-frequency identification reader/writer 12 on some section 10 of road, matched traffic is with taking the photograph
Camera does not embody in figure, it is generally the case that radio-frequency identification reader/writer 12 can be equipped with day all the way for each road vehicles
Line is responsible for the identification work of every road vehicles by the antenna on every road, as shown, a total of 4 road car road, is correspondingly arranged on 4 tunnels
Antenna.In order to guarantee that passing through for vehicle does not influence reference electronic label, two benchmark electricity are set on per designated position all the way
Subtab 30, respectively the first reference electronic label and the second reference electronic label, the first reference electronic label and the second benchmark
Lateral distance between electronic tag at least more than vehicle width and/or fore-and-aft distance at least more than vehicle length.This hair
" transverse direction " refers to the direction vertical with vehicle driving road direction in bright, and " longitudinal direction " refers to parallel with vehicle driving road direction
Direction.The purpose of above-mentioned setting is, when vehicle 20 covers any one in reference electronic label 30, another certainty
It will not be override by the vehicle 20, a reference electronic can be read by ensuring that radio-frequency identification reader/writer 12 so necessarily
The benchmark RSSI value that label 30 returns.
In more embodiments, it is also possible to which there are other interference, lead to position set by reference electronic label 30
Set the blind area identified in the short time just at radio-frequency identification reader/writer 12.Radio-frequency identification reader/writer 12 under normal circumstances, In
Any position can be all identified in the range of radiofrequency signal covering, but can have unknown interference in practicing causes in radio frequency
The success rate of portion radio frequency identification reduces in the range of signal covering, and direct result is exactly that can occur in some period to certain
The multiple reading of a radio frequency recognizing electronic label does not all succeed, and leads to skip.Therefore to radio-frequency identification reader/writer 12 to benchmark
The benchmark RSSI value that electronic tag 30 is read is monitored, when reference electronic label 30 is not read normally in some period
When to benchmark RSSI value, the benchmark RSSI value with reference to last period or the same period acquisition of history is monitored by history and is sentenced
It is disconnected.Preferably, occur reference electronic label 30 it is unread for a long time when, it is likely that radio-frequency identification reader/writer goes out in this position
Show blind area, then the vehicle electron identifying on vehicle is on this position there is also very greatly may be by skip, therefore basis
It is switched to other selection modes when needing to choose the second information of vehicles, a kind of mode is be read at first on access time
Two information of vehicles, another middle mode choose second information of vehicles closest with the benchmark RSSI value of history acquisition.In addition,
Reference electronic label 30 is unread for a long time, and there is also other situations, such as reference electronic label 30 to be damaged, Huo Zhedao
Crowded vehicle covers the reference electronic label 30 on road when the congestion of road, can read vapour by checking whether at this time
The RSSI value that vehicle electronic mark returns does further verifying in the threshold range for the benchmark RSSI value that history acquires, if can
Normally to read, illustrates that radio frequency identification covering is normal, still maintains original mode when choosing the second information of vehicles as needed,
May will also to reference electronic tag damage etc. there are the problem of further handled.
In step s3, by comparing the second vehicle obtained in the first information of vehicles and step S2 that obtain in step S1
Information, determines whether information of vehicles matches.In a particular embodiment, radio-frequency identification reader/writer and friendship all-purpose camera are just
Often in the case where work, the first information of vehicles, the second information of vehicles of different identity vehicle can be read simultaneously, pass through setting two
Different buffer pools, one is used to store the first all information of vehicles, another is for storing the second all information of vehicles.Often
A buffer pool distinguishes the information of vehicles that sequential analysis does not compare, and alignments are to search to another opposite buffer pool predetermined
Whether the information of vehicles of same vehicle identification is had in time range.Matching refers to that the first information of vehicles and the second information of vehicles are signified
Vehicle identification it is whether consistent.Matching not only including license plate number is matched, can also include type of vehicle, body color etc.
The matching of information of vehicles.If it does, indicating that vehicle identification is normal, in two buffer pools respectively to corresponding information of vehicles mark
It is denoted as and has compared, if mismatched, illustrate that vehicle identification is problematic, such as have fake license plate vehicle problem, can mark and be
, corresponding report is generated to relevant sector of demand.
In a preferred embodiment, it is provided with recognition cycle, a vehicle electron identifying is only chosen in recognition cycle
Corresponding vehicle is being handed in all-purpose camera identification range, the second information of vehicles that vehicle electron identifying returns.As described above, radio frequency
It identifies that reader is constantly to be read out to the vehicle electron identifying in coverage area, is that vehicle is in friendship universal camera shooting
In the of short duration time in the identification range of machine, there is also interacting repeatedly to the automotive electronics on same identity vehicle for radiofrequency signal
Mark, which repeatedly read, gets a plurality of second information of vehicles.Due to a plurality of second information of vehicles read under above situation
It is directed to the vehicle of same identity, and is compared with the first information of vehicles and only needs a record, therefore opposite is that there are superfluous
Remaining, if each duplicate second information of vehicles record will be compared with the first information of vehicles, necessarily bring very
Multiple multiple useless operation.In addition, hand over all-purpose camera that will not generate duplicate first information of vehicles in recognition cycle, this
Sample may also lead to comparison mistake.Preferably, it hands over the recognition cycle of all-purpose camera and radio-frequency identification reader/writer to be consistent, protects
Both cards compare the first information of vehicles and the second information of vehicles corresponds.
It is closed it should be noted that the detailed process in step S1, step S2, step S3 is also not necessarily present absolute sequence
System, can also reconfigure between step and step, such as choose specific the according to the RSSI value that vehicle electron identifying returns
The process of two information of vehicles when finding not matched second information of vehicles, then can also be done into one after the completion of step S3 is compared
The screening of step.Its purpose is exactly to prevent certain special circumstances to guarantee that the information source basis compared is to choose reasonably
Under, hand over all-purpose camera and radio-frequency identification reader/writer to work the inconsistent problem for causing to compare mistake.
As shown in figure 4, radio frequency identification and video identification Compare System schematic diagram in an embodiment of the present invention.Radio frequency identification
It include first acquisition unit U1, second acquisition unit U2, comparing unit U3 with video identification Compare System.First acquisition unit U1
By handing over all-purpose camera 11 to obtain the first information of vehicles, second acquisition unit U2 obtains second by radio-frequency identification reader/writer 12
Information of vehicles, comparing unit U3 are compared by the information of vehicles for combining first acquisition unit U1, second acquisition unit U2 to obtain
It is right.Lead on the server for be arranged in rear end you need to add is that radio frequency identification and video identification Compare System can according to need
The information that communication network obtains front-end collection is crossed, also can be set in front end, such as by being run on individual control of section device,
Or it is directly run in the control circuit in radio-frequency identification reader/writer, friendship all-purpose camera.In more embodiments, also
It can will include radio-frequency identification reader/writer, the various modules such as all-purpose camera is handed over to integrate.
First acquisition unit U1 is used to obtain the first information of vehicles for handing over all-purpose camera 11 to acquire, and hands over all-purpose camera 11
Image recognition is carried out to the iron license plate on vehicle in the way of radio frequency identification, extracts the vehicles such as the license plate number on iron license plate letter
Breath.All-purpose camera 11 is handed over to carry out fixed-focus, the relevant image of record vehicle by the vehicle to process.Therefore, universal camera shooting is handed over
Machine 11 has certain identification range, and only when vehicle enters in the identification range for handing over all-purpose camera 11, first obtains list
First U1 could normally get the first information of vehicles.
Second acquisition unit U2 is used to obtain the second vehicle that vehicle electron identifying returns by radio-frequency identification reader/writer 12
Information and corresponding RSSI value；The RSSI value returned according to the vehicle electron identifying chooses the vehicle electron identifying and corresponds to vehicle
It is handing in 11 identification range of all-purpose camera, the second information of vehicles that the vehicle electron identifying returns.Vehicle electron identifying
A kind of radio frequency recognizing electronic label being mounted in front windshield of vehicle as described above, it can be by radio-frequency identification reader/writer
12 read the RSSI value of the information of vehicles of its storage and return signal, and the information of vehicles that vehicle electron identifying returns can be used for
The identity that vehicle electron identifying corresponds to vehicle is represented, and the RSSI value that vehicle electron identifying returns can be used for representing automotive electronics
Corresponding vehicle is identified the distance between to radio-frequency identification reader/writer 12, so that it is determined that whether vehicle is in friendship all-purpose camera 11
In identification range.Specifically, various time points, vehicle body are got by radio-frequency identification reader/writer 12 in second acquisition unit U2
Part, when returning to relevant second information of vehicles of RSSI value, different vehicle identity is chosen by RSSI value and (is being handed in optimum position
In the identification range of all-purpose camera 11) return the second information of vehicles.Second acquisition unit U2 inquires RSSI parameter list, described
It is stored in RSSI parameter list and is handing over the correspondence RSSI value that radio frequency identification signal returns in 11 identification range of all-purpose camera, RSSI
RSSI value in parameter list be in advance rule of thumb and field engineering measuring and calculating setting, when vehicle electron identifying return RSSI value with
Corresponded in RSSI parameter list RSSI value it is close when, so that it may think vehicle electron identifying correspond to vehicle be in traffic use
In the identification range of video camera 11.Therefore, second acquisition unit U2 passes through the RSSI value for judging that the vehicle electron identifying returns
Whether the threshold range of RSSI value in the determination vehicle electron identifying return second is corresponded in the RSSI parameter list
Whether information of vehicles is chosen.The specific setting of RSSI parameter list is referred to the specific of radio frequency identification and video identification comparison method
Embodiment.
In more embodiments, second acquisition unit U2 is handed in 11 identification range of all-purpose camera by being arranged in
Reference electronic label obtains the benchmark RSSI value returned, and whether the RSSI value for judging that vehicle electron identifying returns is in the benchmark
Whether chosen in the threshold range of RSSI value with the second information of vehicles for determining that vehicle electron identifying returns.As shown in Figure 2 and Figure 3,
Reference electronic label is arranged on the road handed in 11 identification range of all-purpose camera, due on reference electronic label and vehicle
The substantial property of the vehicle electron identifying of installation is consistent, and reference electronic label also can be in the radio-frequency region of radio-frequency identification reader/writer 12
Interior return radio-frequency information and corresponding benchmark RSSI value are returned when vehicle electron identifying and when being closely located to of reference electronic label
Returning RSSI value should also approach.Preferably, reference electronic label includes the first reference electronic label and the second reference electronic label,
Lateral distance between the first reference electronic label and the second reference electronic label at least more than vehicle width and/
Or fore-and-aft distance, at least more than the length of vehicle, the benefit done so is that, remain a reference electronic label not by
Occlusion can normally be read by radio-frequency identification reader/writer 12, can normally obtain benchmark RSSI value.Reference electronic mark
Specific setting, the setting of modifying factor and reference of Historical baseline RSSI value of label etc. are referred to radio frequency identification and video identification
The specific embodiment of comparison method.
Comparing unit U3 is used for by comparing first information of vehicles and second information of vehicles to determine that vehicle is believed
Whether breath matches.If it does, illustrating vehicle, there is no problem, if mismatched, illustrates that vehicle may have phenomena such as deck, can be with
Result notice relevant departments will be mismatched.Above-mentioned the first information of vehicles, the second information of vehicles include the vehicle of various vehicle identifications
Information, so when carrying out matching and comparing, be do not know specific the first information of vehicles of which item and it is specific which
The second information of vehicles of item is matched, it is possible to by the way that two buffer pools are arranged, store the first information of vehicles, the second vehicle respectively
Information, information of vehicles is realized by intersecting to compare one by one between each other in two buffer pools.In a preferred embodiment, second
Recognition cycle is arranged in acquiring unit U2, and the primary vehicle electron identifying is only chosen in recognition cycle and corresponds to vehicle in traffic use
In 11 identification range of video camera, the second information of vehicles of the vehicle electron identifying return.Because vehicle is handing over all-purpose camera
In 11 identification range, it may be sent out between the vehicle electron identifying on vehicle and radio-frequency identification reader/writer 12 by radiofrequency signal
Raw repeatedly interaction, therefore can read multiple same vehicle identity upper the second information of vehicles obtained in different time points, these
Second information of vehicles relative to compare purposes be it is duplicate, by be arranged recognition cycle can filter out extra duplicate message.It penetrates
The recognition cycle of frequency identification reader 12 is consistent with the friendship recognition cycle of all-purpose camera 11, can keep mutual consistent
Property.It should be noted that the specific embodiment of radio frequency identification and video identification Compare System can also referring to radio frequency identification with
The specific embodiment of video identification comparison method.
In conjunction with method and technology scheme disclosed in the present application, hardware can be embodied directly in, by the soft of control unit execution
Part module or both combination, i.e. one or more steps and/or one or more steps combination, both can correspond to computer journey
Each software module of sequence process can also correspond to each hardware module, such as ASIC(Application Specific
Integrated Circuit, specific integrated circuit), FPGA(Field-Programmable Gate Array, scene can compile
Journey gate array) or other programmable logic device, discrete gate or transistor logic, discrete hardware components or it is any suitable
Work as combination.For convenience of description, it is divided into various modules when description above-mentioned apparatus with function to describe respectively, certainly, is implementing this
The function of each module can be realized in the same or multiple software and or hardware when application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
It realizes by means of software and necessary general hardware platform.Based on this understanding, the technical solution essence of the application
On in other words the part that contributes to existing technology can be embodied in the form of software products.The software is by microcontroller list
Member executes, and depends on required configuration, may include any kind of one or more micro-control units, including but not limited to
Micro-control unit, microcontroller, DSP(Digital Signal Processor, Digital Signals unit) or its any group
It closes.The software is stored in memory, for example, volatile memory (such as random-access memory etc.), nonvolatile memory
(for example, read-only memory, flash memory etc.) or any combination thereof.
In conclusion the present invention obtains corresponding second information of vehicles of specific RSSI value by radio-frequency identification reader/writer, with
The first information of vehicles for handing over all-purpose camera to obtain is compared, to judge the matching of information of vehicles.The present invention improves radio frequency
Comparison efficiency between identification and video identification, the normal comparison being adapted in various situations.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one
A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book
With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of radio frequency identification and video identification comparison method hand over the first information of vehicles of all-purpose camera acquisition including obtaining,
It is characterized in that, the radio frequency identification and video identification comparison method further include following steps:
The second information of vehicles and corresponding RSSI value that vehicle electron identifying returns are obtained by radio-frequency identification reader/writer；According to institute
The RSSI value selection vehicle electron identifying for stating vehicle electron identifying return corresponds to vehicle and identifies in the friendship all-purpose camera
In range, the second information of vehicles of the vehicle electron identifying return；
By comparing first information of vehicles with second information of vehicles to determine whether information of vehicles matches.
2. radio frequency identification according to claim 1 and video identification comparison method, which is characterized in that inquiry RSSI parameter
Table is stored with the correspondence that radio frequency identification signal returns in the friendship all-purpose camera identification range in the RSSI parameter list
Whether RSSI value, the RSSI value for judging that the vehicle electron identifying returns are in the threshold value that the RSSI parameter list corresponds to RSSI value
Whether chosen in range with the second information of vehicles that the determination vehicle electron identifying returns.
3. radio frequency identification according to claim 1 and video identification comparison method, which is characterized in that by being arranged described
It hands over the reference electronic label in all-purpose camera identification range to obtain the benchmark RSSI value returned, judges the vehicle electron identifying
Whether the RSSI value of return is in the returned in the threshold range of the benchmark RSSI value with the determination vehicle electron identifying
Whether two information of vehicles are chosen.
4. radio frequency identification according to claim 3 and video identification comparison method, which is characterized in that the reference electronic mark
Label include the first reference electronic label and the second reference electronic label, and the first reference electronic label and second benchmark are electric
Lateral distance between subtab at least more than vehicle width and/or fore-and-aft distance at least more than vehicle length.
5. radio frequency identification according to claim 1 and video identification comparison method, which is characterized in that setting recognition cycle,
The primary vehicle electron identifying is only chosen in recognition cycle corresponds to vehicle in the friendship all-purpose camera identification range, institute
State the second information of vehicles of vehicle electron identifying return.
6. a kind of radio frequency identification and video identification Compare System, including first acquisition unit hand over all-purpose camera to adopt for obtaining
First information of vehicles of collection, which is characterized in that the radio frequency identification and video identification Compare System further include:
Second acquisition unit, for obtaining the second information of vehicles and right that vehicle electron identifying returns by radio-frequency identification reader/writer
The RSSI value answered；The RSSI value returned according to the vehicle electron identifying chooses the vehicle electron identifying and corresponds to vehicle described
It hands in all-purpose camera identification range, the second information of vehicles that the vehicle electron identifying returns；
Comparing unit, for by comparing first information of vehicles and second information of vehicles whether to determine information of vehicles
Matching.
7. radio frequency identification according to claim 6 and video identification Compare System, which is characterized in that described second obtains list
Member inquires RSSI parameter list, and the radio frequency identification in the friendship all-purpose camera identification range is stored in the RSSI parameter list and is believed
It is corresponding to judge whether RSSI value that the vehicle electron identifying returns is in the RSSI parameter list for number correspondence RSSI value returned
Whether chosen in the threshold range of RSSI value with the second information of vehicles that the determination vehicle electron identifying returns.
8. radio frequency identification according to claim 6 and video identification Compare System, which is characterized in that described second obtains list
Member obtains the benchmark RSSI value returned, judgement by the reference electronic label being arranged in the friendship all-purpose camera identification range
Whether the RSSI value that the vehicle electron identifying returns is in the threshold range of the benchmark RSSI value with the determination automobile
Whether the second information of vehicles that electronic mark returns is chosen.
9. radio frequency identification according to claim 8 and video identification Compare System, which is characterized in that the reference electronic mark
Label include the first reference electronic label and the second reference electronic label, and the first reference electronic label and second benchmark are electric
Lateral distance between subtab at least more than vehicle width and/or fore-and-aft distance at least more than vehicle length.
10. radio frequency identification according to claim 6 and video identification Compare System, which is characterized in that described second obtains
Recognition cycle is arranged in unit, and the primary vehicle electron identifying is only chosen in recognition cycle and corresponds to vehicle in the traffic with taking the photograph
In camera identification range, the second information of vehicles of the vehicle electron identifying return.
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| CN107798334B (en) * | 2017-08-25 | 2021-06-11 | 天津中兴智联科技有限公司 | Method and device for matching automobile electronic identification data and video identification data |
| CN108364474B (en) * | 2018-02-14 | 2020-11-03 | 重庆市城投金卡信息产业股份有限公司 | Data fusion processing method and system based on image and RFID information |
| CN109300198A (en) * | 2018-11-01 | 2019-02-01 | 深圳市靓工创新应用科技有限公司 | Vehicle pass-through method and system |
| CN112887398A (en) * | 2020-04-28 | 2021-06-01 | 丁禹 | Designated range signal control system adopting communication networking platform |
| CN112053564A (en) * | 2020-09-23 | 2020-12-08 | 南京感动科技有限公司 | Method for checking vehicle card inconsistency of highway network |
| CN112435479B (en) * | 2020-11-09 | 2022-03-01 | 浙江大华技术股份有限公司 | Target object violation detection method and device, computer equipment and system |
| CN112863191B (en) * | 2020-12-31 | 2022-07-05 | 高新兴智联科技有限公司 | Vehicle information acquisition equipment and method and readable storage medium |
| CN113077018A (en) * | 2021-06-07 | 2021-07-06 | 浙江大华技术股份有限公司 | Target object identification method and device, storage medium and electronic device |
| CN114299725B (en) * | 2021-12-31 | 2023-01-17 | 高新兴智联科技有限公司 | Single-lane vehicle-passing information acquisition system and method |
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