CN106875697A - 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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- CN106875697A CN106875697A CN201710259606.0A CN201710259606A CN106875697A CN 106875697 A CN106875697 A CN 106875697A CN 201710259606 A CN201710259606 A CN 201710259606A CN 106875697 A CN106875697 A CN 106875697A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 238000012360 testing method Methods 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000013095 identification testing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000012882 sequential analysis Methods 0.000 description 1
Classifications
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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 provisions 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
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Abstract
The present invention provides a kind of radio frequency identification and video identification comparison method and system, and wherein radio frequency identification comprises the following steps with video identification comparison method：Obtain the first information of vehicles of traffic camera acquisition；The second information of vehicles and the corresponding RSSI value that vehicle electron identifying is returned are obtained by radio-frequency identification reader/writer；The RSSI value returned according to the vehicle electron identifying is chosen the vehicle electron identifying correspondence vehicle and is handed in all-purpose camera identification range described, the second information of vehicles that the vehicle electron identifying is returned；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, be adapted to it is various in the case of normal comparison.
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 technology
At present, the management of vehicle is obtained generally using handing over the all-purpose camera to carry out video identification to the iron car plate on vehicle
The information of vehicles such as the pick-up trade mark, the advantage of iron car plate is directly perceived, and security personnel need not carry special equipment and can just differentiate
License plate number.But, hand over all-purpose camera to there is certain limitation under the influence of environment, it is most important that, iron car plate is got on the bus
The trade mark usually can artificially be altered, and occur in that the phenomenon that false fake license plate vehicle is spread unchecked in traffic administration, be brought very to social stability
Big hidden danger.The development of REID, for the identification of testing vehicle register provides new approach, because related to testing vehicle register
Information of vehicles be generally all stored in radio-frequency identification reader/writer coordinate vehicle electron identifying in, so being difficult to be repaiied by people
Change.In order to comprehensive radio frequency identification and video identification each other the characteristics of, after can simultaneously implementing radio frequency identification and video identification
Mutually compared again, but, due to radio frequency identification and the respective performance of video identification, the time point for causing both to recognize differs
Cause, both recognize that the information of vehicles of same identity cannot be compared directly, cause that both advantages can not be played.
Chinese invention patent ZL201410039721.3 discloses the realization side that a kind of radio frequency identification is compared with Car license recognition
Method, by setting residence time, looks for whether the same identity information of vehicles being mutually matched in specified residence time, if
The match is successful then illustrates that testing vehicle register is normal.But the setting of residence time needs to consider different complex environments, in order to suitable
Answer the difference of recognition time point between radio frequency identification and video identification under different situations, it is necessary to by residence time set it is more long,
The burden being mutually matched so is can bring about, meanwhile, if there is the situation of vehicle long-time congestion, can also cause normal vehicle
Occur mismatching, comparison result is abnormal.
The content of the invention
It is an object of the invention to provide a kind of radio frequency identification and video identification comparison method and system, existing skill is solved
Comparison efficiency is not high between radio frequency identification and video identification in art, the technical problem that can not be normally compared 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
First information of vehicles of traffic camera acquisition, the radio frequency identification also comprises the following steps with video identification comparison method：
The second information of vehicles and the corresponding RSSI value that vehicle electron identifying is returned are obtained by radio-frequency identification reader/writer；According to institute
The RSSI value for stating vehicle electron identifying return chooses the vehicle electron identifying correspondence vehicle in the friendship all-purpose camera identification
In the range of, the second information of vehicles that the vehicle electron identifying is returned；
By comparing first information of vehicles with second information of vehicles to determine whether information of vehicles matches.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification comparison method, RSSI parameter lists are inquired about,
Be stored with the corresponding RSSI that radio frequency identification signal is returned in the friendship all-purpose camera identification range in the RSSI parameter lists
Value, judges whether the RSSI value of the vehicle electron identifying return is in the threshold range of RSSI parameter lists correspondence RSSI value
It is interior determining whether the second information of vehicles that the vehicle electron identifying is returned is chosen.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification comparison method, by being arranged on the friendship
Reference electronic label in all-purpose camera identification range obtains the benchmark RSSI value for returning, and judges that the vehicle electron identifying is returned
Whether the RSSI value returned is in the threshold range of the benchmark RSSI value to determine the vehicle electron identifying is returned second
Whether information of vehicles is chosen.
As the further improvement of above-mentioned radio frequency identification of the invention 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
Width and/or fore-and-aft distance length at least above vehicle of the lateral separation at least above vehicle between label.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification comparison method, recognition cycle is set,
The vehicle electron identifying correspondence vehicle is only chosen once in recognition cycle to be handed in all-purpose camera identification range described, it is described
The second information of vehicles that vehicle electron identifying is returned.
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, the first information of vehicles for obtaining traffic camera acquisition, the radio frequency identification compares with video identification and is
System also includes：
Second acquisition unit, for obtaining the second information of vehicles and right that vehicle electron identifying is returned 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 correspondence vehicle described
Hand in all-purpose camera identification range, the second information of vehicles that the vehicle electron identifying is returned；
Comparing unit, for by comparing first information of vehicles with second information of vehicles whether to determine information of vehicles
Matching.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification Compare System, the second acquisition unit
Inquiry RSSI parameter lists, be stored with the radio frequency identification signal in the friendship all-purpose camera identification range in the RSSI parameter lists
The corresponding RSSI value of return, judges whether the RSSI value that the vehicle electron identifying is returned is corresponding in the RSSI parameter lists
Determining whether the second information of vehicles that the vehicle electron identifying is returned is chosen in the threshold range of RSSI value.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification Compare System, the second acquisition unit
The benchmark RSSI value for returning is obtained by the reference electronic label being arranged in the friendship all-purpose camera identification range, institute is judged
Whether the RSSI value for stating vehicle electron identifying return is in the threshold range of the benchmark RSSI value to determine the automobile electricity
Whether the second information of vehicles that sub-mark is returned is chosen.
As the further improvement of above-mentioned radio frequency identification of the invention 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
Width and/or fore-and-aft distance length at least above vehicle of the lateral separation at least above vehicle between label.
As the further improvement of above-mentioned radio frequency identification of the invention and video identification Compare System, the second acquisition unit
Recognition cycle is set, the vehicle electron identifying correspondence vehicle is only chosen once in recognition cycle in the friendship all-purpose camera
In identification range, the second information of vehicles that the vehicle electron identifying is returned.
Compared with prior art, the present invention obtains corresponding second vehicle of specific RSSI value and believes by radio-frequency identification reader/writer
Breath, compares, with the first information of vehicles for handing over all-purpose camera to obtain to judge the matching of information of vehicles.The present invention improves
Comparison efficiency between radio frequency identification and video identification, be adapted to it is various in the case of normal comparison.
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
Plus it is clear.
Brief description of the drawings
In order to illustrate more clearly of embodiment of the present invention or the technical scheme of prior art, below will be to implementation method or existing
The accompanying drawing to be used needed for technology description is briefly described, it is therefore apparent that drawings in the following description are only the present invention
Described in some implementation methods, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying 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
Below with reference to each implementation method shown in the drawings, the present invention will be described in detail.But these implementation methods are not
The limitation present invention, structure, method or change functionally that one of ordinary skill in the art is made according to these implementation methods
Change and be all contained in protection scope of the present invention.
It should be noted that in various embodiments, identical label or mark may be used, but these not generations
Absolute contact relation in table structure or function.Also, also not generation such as " first ", " second " for being previously mentioned in each implementation method
Absolute differentiation relation in table structure or function, 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, be mainly used in obtaining the first information of vehicles；Step S2, is mainly used in acquisition second
Information of vehicles；Step S3, is mainly used in comparing the first information of vehicles and the second information of vehicles.It should be noted that step
Suddenly sequencing, including various tactic possibility are not limited between S1 and step S2.In step sl, the first vehicle letter
Breath is obtained by handing over all-purpose camera, and in step s 2, the second information of vehicles is obtained by radio-frequency identification reader/writer,
Under normal circumstances, same identity vehicle is recognized due to recognizing the difference of distance, and the recognition speed of radio-frequency identification reader/writer compares traffic
Recognition speed with video camera is fast, therefore step S2 was generally completed before step S1, but is also not precluded within more special feelings
Under condition, such as situations such as weather influences, step S1 was completed or completed simultaneously before step S2.
In step sl, the first information of vehicles of traffic camera acquisition is obtained, hands over all-purpose camera to know by video
Other means to video in iron license plate image be analyzed, obtain corresponding license plate number, for example revive 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, it is also possible to right
The photo of vehicle, the information such as whether reequip and retained.As shown in Fig. 2 certain section 10 is provided with friendship universal camera shooting in road
Machine 11, generally, being set up in section 10 has portal frame, hands over all-purpose camera 11 to be arranged on the upper of road by portal frame
Side.Due to handing over the focal length setting of all-purpose camera 11, necessarily there is certain identification range, and in order to clearly read iron
The image of car plate processed, identification range is relatively limited, only when vehicle enters in the identification range for handing over all-purpose camera 11, vehicle iron
License plate number on car plate processed can just be collected.
In step s 2, the second information of vehicles and the correspondence that vehicle electron identifying is returned are obtained by radio-frequency identification reader/writer
RSSI（Received Signal Strength Indication, the signal intensity of reception is indicated）Value；Obtained according to RSSI value
Obtain specifically the second information of vehicles.As described above, radio-frequency identification reader/writer is to handing over all-purpose camera identification testing vehicle register to enter
One step is supplemented, and it coordinates with vehicle electron identifying, and the working frequency range of radiofrequency signal can be in the range 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. represents the information of vehicles of testing vehicle register, while the vehicular applications stored during vehicle electron identifying can also be read,
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, uses passive techniques, may be mounted on the front windshield of vehicle, by just to radio-frequency identification reader/writer
The radiofrequency signal for sending over enters line activating and feeds back corresponding information of vehicles etc..Radio-frequency identification reader/writer and friendship all-purpose camera
Equally, it is set together with all-purpose camera is handed on portal frame, the vehicle for coming head-on is faced, when the vapour on vehicle
Car electronic mark is in the range 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 is processed by the radiofrequency signal that vehicle electron identifying feeds back, and can not only be obtained
Information of vehicles included in radiofrequency signal etc., while the RSSI value of radiofrequency signal can also be drawn by determining, RSSI value can
To represent the distance of signal source to a certain extent, RSSI value is higher, shows that the vehicle electron identifying of feedback signal is nearer, RSSI
Value is smaller, shows that the vehicle electron identifying of feedback signal is more remote.Because vehicle electron identifying is mounted in the front windshield glass of vehicle
On glass, thus also just can by vehicle electron identifying return RSSI value it is approximate be inferred to vehicle from radio-frequency identification reader/writer
Distance.
As described above, when vehicle electron identifying is in the range of the lobe of radio-frequency identification reader/writer transceiving radio frequency signal, just
The information in vehicle electron identifying can normally be read.In fact, the reading behavior of radio-frequency identification reader/writer is one continuing
Process, if same vehicle continues for some time in the range of the lobe of radiofrequency signal, will be by radio-frequency identification reader/writer
Constantly read the second same information of vehicles.And it is above-mentioned in the case of multiple second information of vehicles that reads it is actual all referring to
To specific testing vehicle register, its purpose all can be to be compared with the first information of vehicles of camera acquisition with traffic
It is right, thus particular vehicle identity the second information of vehicles only need to a record just can be with, choose one of them suitable the
Two information of vehicles can be easy to compare well.If choosing radio-frequency identification reader/writer reads particular vehicle identity first the
Two information of vehicles, its defect is that radio-frequency identification reader/writer is typically due to the propagation characteristic reading/writing distance of radiofrequency signal farther out,
Now very big may to hand over all-purpose camera be the first information of vehicles that cannot collect the testing vehicle register, if there is congestion shape
Condition, may result in comparison and mistake occurs.When vehicle enters and hands in all-purpose camera identification range, now due to radiofrequency signal
Coverage is wider, and the vehicle electron identifying on vehicle will necessarily get 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 correspondence vehicle and is handing over all-purpose camera identification
In the range of, the second information of vehicles that vehicle electron identifying is returned.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 friendship all-purpose camera 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 also be read because of an information of vehicles, a vehicle letter
The mistake for comparing is not read and caused to breath normally.
Specifically, during the second information of vehicles of the multiple same identity for being obtained in analysis, respectively to their corresponding RSSI
Value 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 the RSSI value that vehicle electron identifying is returned has one with vehicle to the distance of radio-frequency identification reader/writer
Individual metastable relation, while it is also relatively-stationary to hand over the identification range of all-purpose camera, so by safeguarding one
RSSI parameter lists, rule of thumb and field engineering measuring and calculating be previously stored can be for reference RSSI value, this RSSI value is automobile
Electronic mark is in the numerical value for handing over the internal feedback of all-purpose camera identification range to be reached to radio-frequency identification reader/writer.Specifically, look into
RSSI parameter lists are ask, judges whether the RSSI value of vehicle electron identifying return is in the threshold value model of RSSI parameter lists correspondence RSSI value
Enclose interior to determine whether the second information of vehicles that the vehicle electron identifying is returned is chosen.
It should be noted that in the application of practice, the manufacturer of vehicle electron identifying is different, because different vendor is to automobile
The optimization direction of electronic mark Technology design is different, causes the variation relation of the RSSI value of vehicle electron identifying return to exist one
Determine difference, but generally speaking, the vehicle electron identifying under same design framework has metastable relation.And,
RSSI value is all as the change of distance accordingly changes.Further, since the Setup Type of vehicle electron identifying can also lead
There is certain difference in cause, the front windshield height of such as car is lower, and front windshield is more inclined.Therefore in order to
The RSSI value that vehicle electron identifying is returned more is accurately judged that, in the prior RSSI parameter lists safeguarded, correspondence is used in traffic
The RSSI value of video camera identification range internal reference carries out classification and provides relevant reference value according to label manufacturer and Setup Type respectively.
Preferably can before RSSI parameter lists are inquired about, can by read store in vehicle electron identifying on vehicle electron identifying
Related label manufacturer information and Setup Type information, then selects corresponding reference RSSI value to judge according to particular combination,
Label manufacturer and the corresponding RSSI value of Setup Type i.e. related to the vehicle electron identifying in inquiry RSSI parameter lists.RSSI
Parameter list is as shown in the table, and same row represents same label manufacturer, and same Setup Type is represented with a line.First, second, the third difference table
Show different label manufacturers, and car glass, truck glass, motor bus glass then example lists several installation classes
Type, A, B, C ... are then to represent different label manufacturers and the corresponding reference RSSI value of Setup Type.Reference RSSI value described in table
It is as described above rule of thumb and a field engineering concrete numerical value being previously stored of measuring and calculating, simply by alphabetical simple in table
Replacement is used to the convenience expressed.
When judging in RSSI value that vehicle electron identifying returns and RSSI parameter lists the relation between reference value, as long as ensureing
Difference between the two is in threshold range, you can think that the corresponding vehicle of vehicle electron identifying is in the knowledge for handing over all-purpose camera
Mainly have at 2 points in other scope, the reason for be implemented：First, the identification range for handing over all-purpose camera is the road of a segment distance
Road, so vehicle is likely to be read into before and after the road of this segment distance, and the RSSI value that diverse location is read into
Can change, second, the RSSI value that the change of surrounding enviroment also results in vehicle electron identifying return fluctuates.Need
Illustrate, the reference value stored in RSSI parameter lists can be the ginseng of the Best Point in a friendship all-purpose camera identification range
Examine RSSI value, or a scope, i.e., the RSSI value that may be read into friendship all-purpose camera identification range
Set.
In more implementation methods, it is also possible to be provided with reference electronic label handing in all-purpose camera identification range,
As shown in Fig. 2 reference electronic label 30 is arranged on road surface, just in the identification range for handing over all-purpose camera 11, benchmark
Electronic tag 30 is similar with the vehicle electron identifying installed on vehicle front windshield, is also same type of frequency identification electronic
Label, using passive techniques, simply vehicle electron identifying memory storage is information of vehicles, in reference electronic label store be with
The grouping information for handing over all-purpose camera, radio-frequency identification reader/writer to coordinate.Vehicle 20 is being introduced into handing over the identification of all-purpose camera 11
In the range of may just by radio-frequency identification reader/writer（It is not shown）Read, now judge vehicle 20 get on the car electronic mark return
RSSI value and reference electronic label 30 return benchmark RSSI value between relation, it finds that both difference more very much not in threshold value
In the range of, now radio-frequency identification reader/writer reads the second information of vehicles of vehicle 20 and cannot be selected for comparing, because
All-purpose camera is handed over not read the iron car plate on vehicle 20 also.If congestion exceeds the regular hour, ratio is may result in
To mistake.After vehicle 20 is advanced into handing over the identification range of all-purpose camera 11, due to the automotive electronics on vehicle 20
Mark is close with what reference electronic label 30 was leaned on, therefore they return to the RSSI value of same radio-frequency identification reader/writer and will differ
Less, and now the first information of vehicles for obtaining and the second information of vehicles are optimal as the mutual basis for comparing, so this reality
Mode is applied by judging whether the RSSI value that vehicle electron identifying is returned is in the threshold range of benchmark RSSI value to determine vapour
Whether the second information of vehicles that car electronic mark is returned is chosen.Preferably, the benchmark RSSI value that reference electronic label 30 is returned is made
It is when reference, it is also desirable to further corrected, as noted previously, as the mark in the vehicle electron identifying source on vehicle 20
Sign manufacturer and Setup Type and have difference, thus the benchmark RSSI value returned to reference electronic label 30 also for different situations or
The RSSI value that vehicle electron identifying is returned 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 provided on road, if vehicle is by just covering reference electronic
During label 30, radio-frequency identification reader/writer cannot normally read reference electronic label 30, also just can in the absence of benchmark RSSI value
For reference.As shown in figure 3, be provided with radio-frequency identification reader/writer 12 on road certain section 10, matched traffic is with taking the photograph
Camera embodies not 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 per road vehicles, as illustrated, a total of 4 bus road, is correspondingly arranged on 4 tunnels by the antenna on every road
Antenna.In order to ensure vehicle by not influenceing reference electronic label, two benchmark electricity are set on per specified location 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
Width and/or fore-and-aft distance length at least above vehicle of the lateral separation at least above vehicle between electronic tag.This hair
" transverse direction " refers to the direction vertical with vehicle travel direction in bright, and " longitudinal direction " refers to parallel with vehicle travel direction
Direction.The purpose of above-mentioned setting is, when vehicle 20 covers any one in reference electronic label 30, another certainty
Will not be override by the vehicle 20, so ensure that radio-frequency identification reader/writer 12 can necessarily read a reference electronic
The benchmark RSSI value that label 30 is returned.
In more implementation methods, it is also possible to there is other interference, cause the position set by reference electronic label 30
Put the blind area just at the identification of radio-frequency identification reader/writer 12 in the short time.Radio-frequency identification reader/writer 12 under normal circumstances,
Optional position can all be identified in the range of radiofrequency signal covering, but can there is unknown interference in practice causes in radio frequency
The success rate reduction of portion radio frequency identification in the range of signal covering, direct result is exactly can occur to certain in certain period
The multiple reading of individual radio frequency recognizing electronic label does not all succeed, and causes skip.Therefore to radio-frequency identification reader/writer 12 to benchmark
The benchmark RSSI value that electronic tag 30 reads is monitored, when reference electronic label 30 is not read normally in certain period
During to benchmark RSSI value, the benchmark RSSI value gathered with reference to last period or history same period is monitored by history and is sentenced
It is disconnected.Preferably, when reference electronic label 30 occur and not reading for a long time, it is likely that radio-frequency identification reader/writer goes out in this position
Blind area is showed, then the vehicle electron identifying on vehicle there is also on this position very greatly may be by skip, therefore basis
Need to be switched to other selection patterns when choosing the second information of vehicles, a kind of mode is the be read at first on access time
Two information of vehicles, another middle mode chooses second information of vehicles closest with the benchmark RSSI value of history collection.In addition,
Reference electronic label 30 does not read for a long time also has other situations, and such as reference electronic label 30 there occurs damage, Huo Zhedao
Crowded vehicle covers the reference electronic label 30 on road during the congestion of road, now can read vapour by checking whether
Further checking is done in the threshold range of the benchmark RSSI value that the RSSI value that car electronic mark is returned is gathered in history, if can
Normally to read, illustrate that radio frequency identification covering is normal, original pattern remained in that when choosing the second information of vehicles as needed,
Also the problem of the presence such as reference electronic tag damage may further be processed.
In step s3, by comparing the second vehicle obtained in the first information of vehicles and step S2 that are obtained 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 of work, the first information of vehicles, second information of vehicles of different identity vehicle can be simultaneously read, by setting two
Different Buffer Pools, one is used to store all of first information of vehicles, and another is used to store all of second information of vehicles.Often
Individual Buffer Pool distinguishes the information of vehicles that sequential analysis is not compared, and alignments are to be searched predetermined to another relative Buffer Pool
Whether the information of vehicles of same testing vehicle register is had in time range.Matching refers to that the first information of vehicles and the second information of vehicles are signified
Testing vehicle register it is whether consistent.The not only matching including license plate number is matched, can also be including type of vehicle, body color etc.
The matching of information of vehicles.If it does, represent that testing vehicle register is normal, in two Buffer Pools respectively to corresponding information of vehicles mark
It is designated as having compared, if mismatched, illustrates that testing vehicle register is problematic, for example, have fake license plate vehicle problem, can marks and be
, generation is corresponding to be reported to related sector of demand.
In a preferred embodiment, recognition cycle is provided with, a vehicle electron identifying is only chosen in recognition cycle
Correspondence vehicle is being handed in all-purpose camera identification range, the second information of vehicles that vehicle electron identifying is returned.As described above, radio frequency
Identification read write line is that constantly the vehicle electron identifying in coverage is read out, and is that vehicle is in friendship universal camera shooting
In the of short duration time in the identification range of machine, interacting to the automotive electronics on same identity vehicle repeatedly for radiofrequency signal is there is also
Mark repeatedly read and gets a plurality of second information of vehicles.Due to a plurality of second information of vehicles read in the case of above-mentioned
Be directed to the vehicle of same identity, and compare with the first information of vehicles and only need to a record, thus it is relative be exist it is superfluous
Remaining, if will compare with the first information of vehicles to the second information of vehicles record that each is repeated, necessarily bring very
Repeat useless operation more.In addition, friendship all-purpose camera will not also produce the first information of vehicles of repetition in recognition cycle, this
Sample is likely to cause to compare mistake.Preferably, it is consistent with the recognition cycle of radio-frequency identification reader/writer to hand over all-purpose camera, is protected
Both first information of vehicles of comparison of card and the second information of vehicles are corresponded.
It should be noted that the idiographic flow in step S1, step S2, step S3 is also not necessarily present absolute order closing
System, can also reconfigure between step and step, and the RSSI value for for example being returned according to vehicle electron identifying chooses specific the
The flow of two information of vehicles, it is also possible to after the completion of step S3 comparisons, during the second information of vehicles that discovery is not matched, then do into one
The screening of step.Its purpose is exactly to ensure that the information source basis for comparing is to choose rational, preventing some special circumstances
Under, hand over the all-purpose camera problem for causing to compare mistake inconsistent with radio-frequency identification reader/writer work.
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
Include first acquisition unit U1, second acquisition unit U2, comparing unit U3 with video identification Compare System.First acquisition unit U1
The first information of vehicles is obtained by handing over all-purpose camera 11, second acquisition unit U2 obtains second by radio-frequency identification reader/writer 12
Information of vehicles, comparing unit U3 is compared by combining the information of vehicles that first acquisition unit U1, second acquisition unit U2 are obtained
It is right.You need to add is that, radio frequency identification can be arranged as required to lead on the server of rear end with video identification Compare System
Cross the information that communication network obtains front-end collection, it is also possible to be arranged on front end, for example, run by single control of section device,
Or directly operation on the control circuit in radio-frequency identification reader/writer, friendship all-purpose camera.In more implementation methods, also
To can be integrated including various modules such as radio-frequency identification reader/writer, friendship all-purpose cameras.
First acquisition unit U1 is used to obtain the first information of vehicles for handing over the collection of all-purpose camera 11, hands over all-purpose camera 11
Image recognition is carried out to the iron car plate on vehicle using radio frequency identification mode, the vehicles such as the license plate number on iron car plate is extracted and is believed
Breath.All-purpose camera 11 is handed over to be focused by the vehicle for passing through, the related image of registration of vehicle.Therefore, universal camera shooting is handed over
Machine 11 has certain identification range, and only when vehicle is entered into the identification range for handing over all-purpose camera 11, first obtains single
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 is returned 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 correspondence car
Handing in the identification range of all-purpose camera 11, the second information of vehicles that the vehicle electron identifying is returned.Vehicle electron identifying
A kind of radio frequency recognizing electronic label on vehicle front windshield is mounted in as described above, and it can be by radio-frequency identification reader/writer
The RSSI value of 12 information of vehicles for reading its storage and return signal, the information of vehicles that vehicle electron identifying is returned can be used for
The identity of vehicle electron identifying correspondence vehicle is represented, and the RSSI value that vehicle electron identifying is returned can be used for representing automotive electronics
Mark correspondence vehicle the distance between to radio-frequency identification reader/writer 12, so that it is determined that whether vehicle 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
When part, the second information of vehicles of return RSSI value correlation, different vehicle identity is chosen in optimum position by RSSI value（Handing over
In the identification range of all-purpose camera 11）The second information of vehicles for returning.Second acquisition unit U2 inquires about RSSI parameter lists, described
It is stored with RSSI parameter lists and is handing over the corresponding RSSI value that radio frequency identification signal is returned in the identification range of all-purpose camera 11, RSSI
RSSI value in parameter list be in advance rule of thumb and field engineering measuring and calculating set, when vehicle electron identifying return RSSI value with
When correspondence RSSI value is close in RSSI parameter lists, it is possible to think that vehicle electron identifying correspondence vehicle is used in traffic
In the identification range of video camera 11.Therefore, second acquisition unit U2 is by judging the RSSI value that the vehicle electron identifying is returned
Whether it is in the threshold range of RSSI parameter lists correspondence RSSI value to determine the vehicle electron identifying is returned second
Whether information of vehicles is chosen.It is specific with video identification comparison method that the specific setting of RSSI parameter lists is referred to radio frequency identification
Implementation method.
In more implementation methods, second acquisition unit U2 is by being arranged in the friendship identification range of all-purpose camera 11
Reference electronic label obtains the benchmark RSSI value for returning, and judges whether the RSSI value that vehicle electron identifying is returned is in the benchmark
Determining whether the second information of vehicles that vehicle electron identifying is returned is chosen in the threshold range of RSSI value.As shown in Figure 2 and Figure 3,
Reference electronic label is provided in handing on the road in the identification range of all-purpose camera 11, due on reference electronic label and vehicle
The substantial property of 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
It is interior to return to radio-frequency information and corresponding benchmark RSSI value, when vehicle electron identifying and when being closely located to of reference electronic label, return
Returning RSSI value should also approach.Preferably, reference electronic label includes the first reference electronic label and the second reference electronic label,
Lateral separation between the first reference electronic label and the second reference electronic label at least above vehicle width and/
Or fore-and-aft distance, at least above the length of vehicle, the benefit of do 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 signed etc. is referred to radio frequency identification and video identification
The specific embodiment of comparison method.
Comparing unit U3 is used to believe to determine vehicle with second information of vehicles by comparing first information of vehicles
Whether breath matches.If it does, explanation vehicle has no problem, if mismatched, illustrate that vehicle there may be the phenomenons such as deck, can be with
Result will be mismatched and notify relevant departments.The above-mentioned car of the first information of vehicles, the second information of vehicles including various testing vehicle registers
Information, so when carrying out matching and comparing, be do not know the specific information of vehicles of which bar first and it is specific which
The matching of the information of vehicles of bar second, it is possible to by setting two Buffer Pools, the first information of vehicles, the second vehicle are stored respectively
Information, information of vehicles is realized by intersecting to compare one by one each other in two Buffer Pools.In a preferred embodiment, second
Acquiring unit U2 sets recognition cycle, the vehicle electron identifying correspondence vehicle is only chosen once in recognition cycle and is used in traffic
In the identification range of video camera 11, the second information of vehicles that the vehicle electron identifying is returned.Because vehicle is handing over all-purpose camera
In 11 identification range, may be sent out by radiofrequency signal between the vehicle electron identifying and radio-frequency identification reader/writer 12 on vehicle
Raw repeatedly interaction, therefore the second information of vehicles that multiple same vehicle identity is obtained in different time points can be read, these
Second information of vehicles is to repeat relative to purposes is compared, and unnecessary duplicate message can be filtered by setting recognition cycle.Penetrate
The recognition cycle of frequency identification read write line 12 is consistent with the recognition cycle of friendship all-purpose camera 11, and can keep each other is consistent
Property.It should be noted that the specific embodiment of radio frequency identification and video identification Compare System can also with reference to radio frequency identification with
The specific embodiment of video identification comparison method.
With reference to method and technology scheme disclosed in the present application, can be embodied directly in hardware, by control unit perform it is soft
Part module or the two combination, i.e. one or more steps and/or one or more steps are combined, and both can correspond to computer journey
Each software module of sequence flow, can also correspond to each hardware module, such as ASIC（Application Specific
Integrated Circuit, application specific integrated circuit）、FPGA（Field-Programmable Gate Array, scene can compile
Journey gate array）Or other PLDs, 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 with function during description said apparatus to describe respectively, certainly, is implementing this
The function of each module can be realized in same or multiple softwares and/or hardware during application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Based on such understanding, the technical scheme essence of the application
On the part that is contributed to prior art in other words can be embodied in the form of software product.The software is by microcontroller list
Unit performs, and depends on required configuration, can 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
Close.The software is stored in memory, for example, volatile memory（Such as random-access memory etc.）, nonvolatile memory
（For example, read-only storage, flash memory etc.）Or its any combination.
In sum, 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
Identification and video identification between comparison efficiency, be adapted to it is various in the case of normal comparison.
It should be understood that, although the present specification is described in terms of embodiments, but not each implementation method only includes one
Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say
Used as an entirety, technical scheme in each implementation method can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment for understanding.
Those listed above is a series of to be described in detail only for feasibility implementation method of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included within the scope of the present invention.
Claims (10)
1. a kind of radio frequency identification and video identification comparison method, including the first information of vehicles of traffic camera acquisition is obtained,
Characterized in that, the radio frequency identification also comprises the following steps with video identification comparison method：
The second information of vehicles and the corresponding RSSI value that vehicle electron identifying is returned are obtained by radio-frequency identification reader/writer；According to institute
The RSSI value for stating vehicle electron identifying return chooses the vehicle electron identifying correspondence vehicle in the friendship all-purpose camera identification
In the range of, the second information of vehicles that the vehicle electron identifying is returned；
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, it is characterised in that inquiry RSSI parameters
Table, be stored with the correspondence that radio frequency identification signal is returned in the friendship all-purpose camera identification range in the RSSI parameter lists
RSSI value, judges whether the RSSI value of the vehicle electron identifying return is in the threshold value of RSSI parameter lists correspondence RSSI value
In the range of determining whether the second information of vehicles that the vehicle electron identifying is returned is chosen.
3. radio frequency identification according to claim 1 and video identification comparison method, it is characterised in that described by being arranged on
Hand over the reference electronic label in all-purpose camera identification range to obtain the benchmark RSSI value for returning, judge the vehicle electron identifying
The RSSI value of return whether in the threshold range in the benchmark RSSI value with determine that the vehicle electron identifying returns the
Whether two information of vehicles are chosen.
4. radio frequency identification according to claim 3 and video identification comparison method, it is characterised in that the reference electronic mark
Label include the first reference electronic label and the second reference electronic label, the first reference electronic label and second benchmark electricity
Width and/or fore-and-aft distance length at least above vehicle of the lateral separation at least above vehicle between subtab.
5. radio frequency identification according to claim 1 and video identification comparison method, it is characterised in that recognition cycle is set,
Only choose once the vehicle electron identifying correspondence vehicle in recognition cycle to be handed in all-purpose camera identification range described, 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, it is characterised in that the radio frequency identification also includes with video identification Compare System：
Second acquisition unit, for obtaining the second information of vehicles and right that vehicle electron identifying is returned 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 correspondence vehicle described
Hand in all-purpose camera identification range, the second information of vehicles that the vehicle electron identifying is returned；
Comparing unit, for by comparing first information of vehicles with second information of vehicles whether to determine information of vehicles
Matching.
7. radio frequency identification according to claim 6 and video identification Compare System, it is characterised in that described second obtains single
Unit's inquiry RSSI parameter lists, be stored with the radio frequency identification letter in the friendship all-purpose camera identification range in the RSSI parameter lists
Number corresponding RSSI value for returning, judge RSSI value that the vehicle electron identifying returns whether in the RSSI parameter lists correspondingly
Determining whether the second information of vehicles that the vehicle electron identifying is returned is chosen in the threshold range of RSSI value.
8. radio frequency identification according to claim 6 and video identification Compare System, it is characterised in that described second obtains single
Unit obtains the benchmark RSSI value for returning by the reference electronic label being arranged in the friendship all-purpose camera identification range, judges
Whether the RSSI value that the vehicle electron identifying is returned is in the threshold range of the benchmark RSSI value to determine the automobile
Whether the second information of vehicles that electronic mark is returned is chosen.
9. radio frequency identification according to claim 8 and video identification Compare System, it is characterised in that the reference electronic mark
Label include the first reference electronic label and the second reference electronic label, the first reference electronic label and second benchmark electricity
Width and/or fore-and-aft distance length at least above vehicle of the lateral separation at least above vehicle between subtab.
10. radio frequency identification according to claim 6 and video identification Compare System, it is characterised in that described second obtains
Unit sets recognition cycle, and vehicle electron identifying correspondence vehicle is only chosen once in recognition cycle in the traffic with taking the photograph
In camera identification range, the second information of vehicles that the vehicle electron identifying is returned.
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