CN103496350A - Electronic license plate and method for reading information in electronic license plate - Google Patents

Electronic license plate and method for reading information in electronic license plate Download PDF

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Publication number
CN103496350A
CN103496350A CN201310479158.7A CN201310479158A CN103496350A CN 103496350 A CN103496350 A CN 103496350A CN 201310479158 A CN201310479158 A CN 201310479158A CN 103496350 A CN103496350 A CN 103496350A
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license plate
electronic license
subarea
information
read
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CN201310479158.7A
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CN103496350B (en
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赵明
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Chongqing Chengtou Gold Card Information Industry Co Ltd
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Chongqing Chengtou Gold Card Information Industry Co Ltd
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Abstract

The invention provides an electronic license plate and a method for reading information in the electronic license plate. The electronic license plate includes an EPC storage area and a user area, wherein the EPC storage area is used for storing the general management information of a vehicle, and the user area is used for storing the personalized information of the vehicle. Through the partition on the electronic license plate, the information in the electronic license plate can be selectively read, and therefore reading efficiency is improved.

Description

The read method of information in electronic license plate and electronic license plate
Technical field
The present invention relates to intelligent transportation field, relate in particular to the reading/writing method of information in a kind of electronic license plate and electronic license plate.
Background technology
In the last few years, along with the growth rate of vehicle is swift and violent, cause the traffic in city to go from bad to worse, and set up intelligent transportation system (the Intelligent Transportation System of perfect in shape and function in city, be called for short " ITS "), be the effective ways that improve current current situation of traffic.ITS is the focus that current countries in the world field of traffic is competitively studied and applied, it by computer technology, information techenology, data communication technology, automatic control technology etc. effectively integrated use in whole transport administration system, Jiang Ren, road, car combine, thus set up a kind of on a large scale in, comprehensive play a role in real time, traffic comprehensive management system accurately and efficiently.
Based on RFID(Radio Frequency Identification, RF identification) the traffic intelligence management system of technology, exactly the RFID technology is applied to intelligent transportation field, give full play to the huge advantage of its automatic identification and dynamic information collection, efficiently solve the bottleneck problem of urban traffic information construction.Described management system, be that hardware and software platform, the service that promotes the systems such as public security, traffic to relate to car information turns to target, using electronic license plate as data carrier, using the RFID technology as basic information acquisition means, realization relates to sharing of car information resources, the level of IT application of lifting vehicle management.Particularly, the mode of employing is that electronic license plate is installed on vehicle, and this electronic license plate is the needs according to transport administration, and steered vehicle, steerman and urban traffic information are write wherein.Due to the collection point, road surface be provided with on road based on the RFID technology, when the driven vehicle that contains electronic license plate passes through set collection point, harvester reads and is uploaded to management system by the electronic license plate information in overlay area.But electronic license plate adopts EPC(Electronic Product Code, electronic product code usually at present) encode and store all information, when reading, need all information in disposable read electric car plate.
Summary of the invention
In view of this, the invention provides the read method of information in a kind of electronic license plate and electronic license plate.Can optionally read and write the information in electronic license plate, improve reading efficiency.
Electronic license plate provided by the invention comprises: for the electric product coding EPC memory space of the general management information of store car with for the user area of the customized information of store car.
Further, the user area of the described customized information for store car comprises the combination in following arbitrary subarea or a plurality of subareas:
Subarea for store car heading code VIN code, the subarea of for the annual examination of store car, stopping phase, license plate number and E-Payment sign, subarea for the store car file number, the subarea that is used for the printing card number of store electrons car plate, for the subarea of storing high-speed highway information, for storing the subarea of year/time ticket sign, inferior ticket purchase time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type.
Further, the customized information that store the user area of the described customized information for store car is encrypted;
Further, the described subarea for the store car file number adopts permanent write-protect to carry out the data storage;
Further, the size of the user area of the described customized information for store car is not less than 512bits, and the size in the Ge subarea, user area of the described customized information for store car is not less than 64bits.
Further, the general management information of described vehicle comprises: province number, city number, bonded area vehicle mark, character of use, vehicle type, whether can go up sign, ton/seat value, number plate kind and passenger-cargo sign at a high speed.
Further, the one or more subareas in described user area adopt compressed encoding storage information;
Described compaction coding method is:
Character to this subarea institute canned data adopts the n bit binary data to be encoded, the corresponding n bit binary data of each character;
Wherein, the value of n is for meeting 2 nthe smallest positive integral of>=N; The binary data figure place that described n is this subarea store information word symbol; The quantity of the kinds of characters that described N need to be used for this subarea canned data.
Further, described electronic license plate also comprises: for memory access password and the protected zone of killing instruction, and for depositing the tag identifier TID memory space of custom code and vendor code.
Further, described custom code is the authentication code of the described electronic license plate legitimacy of sign; A plurality of electronic license plates have identical custom code.
Further, the product batches number that described custom code is administrative division number and/or electronic license plate.
Further, described electronic license plate adopts the chip with dynamic recovery function to realize, and the described custom code of storing for the tag identifier TID memory space of depositing custom code and vendor code is according to described dynamic recovery customizing functions.
Further, the password version number of described electronic license plate is also preserved in described EPC memory space;
Described password version number generates access code for the electronic license plate read write line.
Correspondingly, the present invention also provides the read method of information in a kind of electronic license plate, comprising:
Read write line is scanned electronic license plate, and the general management information of vehicle is read in the EPC memory space of the general management information for store car from described electronic license plate according to configuration requirement, and/or the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate;
Further, the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate, comprising:
Read the VIN code from the subarea for store car heading code VIN code;
And/or the annual examination that vehicle is read in the subarea of from the annual examination for store car, stopping phase, license plate number and E-Payment sign stops phase, license plate number and E-Payment sign;
And/or, read the vehicle file number from the subarea for the store car file number;
And/or, read the printing card number of car plate from the subarea of the printing card number for the store electrons car plate;
And/or, read Expressway Information from the subarea for the storing high-speed highway information;
And/or, read year/time ticket sign, inferior ticket from the subarea of buying time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type for storing year/time ticket sign, inferior ticket and buy time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket and reduce or remit and indicate and the annual ticket type.
Further, described method also comprises:
Read custom code and vendor code from the TID memory space for depositing custom code and vendor code, according to described custom code and vendor code, described electronic license plate is carried out to validity judgement, when determining described electronic license plate when legal, carry out described according to configuration requirement the EPC memory space of the general management information for store car from described electronic license plate read the general management information of vehicle, and/or the step of the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate.
Further, the customized information that store the user area of the described customized information for store car is encrypted;
Further, the subarea for the store car file number adopts permanent write-protect to carry out the data storage.
Further, the size of the user area of the described customized information for store car is not less than 512bits, and the size in the Ge subarea, user area of the described customized information for store car is not less than 64bits.
Further, the general management information of described vehicle comprises: province number, city number, bonded area vehicle mark, character of use, vehicle type, whether can go up sign, ton/seat value, number plate kind and passenger-cargo sign at a high speed.
Beneficial effect of the present invention:
Electronic license plate of the present invention is owing to comprising: for the electric product coding EPC memory space of the general management information of store car with for the user area of the customized information of store car; Therefore during the information in the read electric car plate, can be from EPC memory space and user area reading information respectively, realize that selectivity reads, improve reading efficiency.Give an example to say: conventional traffic control systems for some, can only read the information of EPC memory space.
Further, for the customized information of storing in user area, be encrypted, rather than adopt the EPC coding, thereby strengthened the secret protection of customized information, avoid the leakage of customized information.
Further, the one or more subareas in electronic license plate of the present invention user area adopt compressed encoding storage information, with prior art, adopt the mode of ASCII character storage to compare, and have at first saved storage space; Secondly, owing to not using general ASCII character but adopted personalized compressed encoding, therefore strengthen protection, avoided subarea information to be revealed and distort; The 3rd, reduce subarea information and read the data volume of transmitting in process, improved transmission efficiency.
Further, electronic license plate of the present invention is because the chip that employing has the dynamic recovery function is realized, and the custom code of storing for the tag identifier TID memory space of depositing custom code and vendor code is according to the dynamic recovery customizing functions.Therefore, when carrying out intelligent traffic administration system, owing to likely in same coverage, thering are a lot of electronic tags, after electronic license plate is through customization, electronic license plate and other electronic tags can be distinguished, played the effect that label is filtered.
Further, the custom code in the present invention is the authentication code of the described electronic license plate legitimacy of sign; A plurality of different electronic license plates have identical custom code.Can, in sign electronic license plate legitimacy, avoid the illegal tracking of specific vehicle and the information leakage of specific vehicle.
Further, after electronic license plate adopts the dynamic recovery function, owing to being customized by dynamic recovery, increased the safety of electronic license plate, can prevent that other people are counterfeit, the camouflage electronic license plate.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of the embodiment of traffic control system provided by the invention.
Fig. 2 is the structural representation of the embodiment of electronic license plate provided by the invention.
Fig. 3 is the structural representation of the embodiment of the user area in Fig. 2.
Fig. 4 is the schematic flow sheet of the embodiment of the read method of information in electronic license plate provided by the invention.
The specific embodiment
Please refer to Fig. 1, is the structural representation of the embodiment of a kind of traffic control system provided by the invention.This traffic control system comprises: electronic license plate 1, be arranged on read write line 2 and transport administration server 3 such as expressway entrance and exit, collection points such as cross roads that vehicle flowrate is large, transport administration server 3 is connected with the read write line 2 of diverse location by network, builds the transport administration net.When the vehicle that posts electronic license plate 1, during through collection point, read write line 2 gathers required information in electronic license plate 1 according to configuration in advance, and reports to transport administration server 3; Transport administration server 3 is according to the information realization transport administration reported.
Particularly, as shown in Figure 2, be the structural representation of the embodiment of electronic license plate 1 provided by the invention.This electronic license plate 1 can be by the IC(integrated circuit) chip realizes, it structurally comprises: 12, user area 13,11, protected zone, ,JiEPC memory space, four memory spaces and TID (Tag Identity, tag identifier) memory space 14.
Wherein, EPC memory space 11 is for the general management information of store car.This district can adopt the EPC coded system to realize.The general management information of the vehicle of its storage is Noncoded Information.The general management information of the vehicle of its storage includes but not limited to: province number, number plate kind, character of use, city number, vehicle type, bonded area vehicle mark, whether can go up sign, ton/seat value and passenger-cargo sign at a high speed.In application at some to the simple management of vehicle, the vehicle management server only needs to read the general management information of vehicle, now the vehicle management server can configure read write line and reads through the information in EPC memory space 11 in its electronic license plate, thereby reduces the data volume that read write line reads and reports.
Preferably, described EPC has also stored in district the password version number of electronic ticket; Described password version number generates access code for the electronic license plate read write line;
The method of described generation access code can adopt any one to generate the method for access code according to password version number, and the embodiment of the present invention is not limited in this respect.
For instance, read write line can be contrasted password version number and code book, finds the information of this password version number in code book to be access code.Read write line also can find the cryptographic algorithm corresponding to this password version number by password version number, by this cryptographic algorithm, generates access code.Described cryptographic algorithm can be MD5, HASH scheduling algorithm, and the present invention does not do restriction.
Utilize password version number to generate the mode of access code, can according to product batches, administrative possession etc., concrete access code generating mode be set by distribution producer, for the product of different batches or the product in different administrative possessions, can also adopt different access code generation methods, as long as can mate with label.Multiple access code verification mode, for device security provides diversified selection, promoted safety.
It should be noted that, in the present invention, in described EPC memory space 11, the general management information of the vehicle of storage and/or password version number also can be used other coded system arbitrarily, and the present invention is for the not restriction of coded system in this district.
Wherein, protected zone 12 is for memory access password (Acess Password) with kill instruction (Kill Password).Access code, for verifying whether read write line has access rights to electronic license plate, when read write line can not pass through the checking of access code, is refused the read-write requests of read write line herein.Killing instruction herein is that the information in the electronic license plate be inactivated can not be changed for electronic license plate is carried out to inactivation treatment.
Wherein, TID memory space 14 is for depositing custom code and vendor code.Herein, vendor code comprises permanent 32 TID coding and 64 UTID(factory program unique tags signs) coding.In addition, when the chip for realizing electronic license plate adopts some to have the dynamic recovery functional chip, for example: while adopting the Higgs-3RFID IC of Alien technology company, custom code is customized according to this dynamic recovery function, to guarantee the safety of custom code.Herein, vendor code and custom code can identify electronic license plate uniquely, make read write line can determine according to vendor code and custom code the legitimacy of electronic license plate.Lifting an example says: the vendor code of legal electronic license plate and custom code are injected to the transport administration server in batches, the transport administration server by the vendor code of legal electronic license plate and custom code information configuration to read write line; When read write line in when work, read vendor code and the custom code of current electronic license plate, and the vendor code that reads and legal vendor code and the custom code of custom code and configuration are compared, and then judge the legitimacy of current electronic license plate, and legal electronic license plate is carried out to read-write operation.By electronic license plate is carried out to validity judgement, the illegal electronic license plate for those, read write line will can not read information wherein, thereby realize the filtration to electronic license plate.
The custom code of electronic license plate of the present invention can be the authentication code of the corresponding unique identification electronic license plate of an electronic license plate, can be also the corresponding custom codes of a plurality of electronic license plates;
Preferably, described custom code is the authentication code of the described electronic license plate legitimacy of sign; A plurality of electronic license plates have identical custom code.
In the present invention, described custom code can preferably be used the combination of the administrative division number of administrative division under the product batches number of electronic license plate or vehicle or product batches number and administrative division number;
For example, the product batches of a collection of electronic license plate number is 00001; This batch of electronic license plate is used for the vehicle use of Beijing, and administrative division number is 01;
Can use production product batches number 00001 custom code as this batch of electronic license plate; Also can use administrative division number 01 custom code as this batch of electronic license plate; Can also use administrative division number+product batches number 0100001 custom code as this batch of electronic license plate.
Certainly, described custom code also can adopt other mode to set, as, the distribution unit is that all electronic license plates are set a unified custom code etc.There is identical custom code as long as can ensure a plurality of electronic license plates.
In electronic license plate, the information of TID memory space can arbitrarily be read and, without obtaining correct access code, be that is to say, custom code is easy to be read by illegal read write line.
In prior art, according to the regulation of industry relevant criterion, the custom code unique identification electronic license plate that TID preserves memory space, that is to say, each electronic license plate have one unique to custom code that should car plate; Therefore, the custom code of preserving by the TID memory space gets final product unique concrete vehicle of determining.This can bring very large potential safety hazard.
For instance, the holder of illegal read write line can obtain custom code by illegal read write line, in conjunction with the means such as field observation or shooting just can be easy to obtain the corresponding information of vehicles of this custom code (as, car plate, model, color etc.), cause the leakage of information of vehicles; Like this, utilize illegal read write line just can implement easily the illegal action such as illegal tracking to specific vehicle, location.
In this preferred implementation, adopted the custom code of not exclusive sign electronic license plate, like this, even the holder of illegal read write line has obtained described custom code, because this custom code can not the unique identification specific vehicle, can not, by custom code and specific vehicle corresponding relationship, can limit the illegal action such as illegal track and localization to specific vehicle by actv..
Simultaneously, this custom code is that the distribution unit customizes, so this custom code still can play the purpose of sign electronic license plate legitimacy.Further, in conjunction with the aforesaid electronic license plate with dynamic recovery functional chip, described custom code, when being read by read write line, further customizes by described dynamic recovery function, can better guarantee the safety of described custom code and to the electronic license plate legitimate verification.
Simultaneously, this preferred implementation can also avoid manufacturer privately to produce electronic license plate; For instance, custom code of setting that electronic license plate distribution unit is same batch products, as, product batches number, and write in all electronic license plates of same batch of production.And the quantity of same batch products can from several, tens to up to a million, ten million do not wait, according to the distribution unit demand produced.The electronic license plate quantity of this batch of production and scale can be controlled by the distribution unit, while occurring surpassing the electronic license plate quantity of its requirement production on market, can determine by product batches number the distribution unit of electronic license plate, avoid manufacturer privately to produce the electronic license plate similar with the unit of distribution, thereby avoid the operation of distribution unit is impacted.
Further, while adopting administrative division combination product batch number as custom code, not only there is above-mentioned advantage, can also be by the administrative division number affiliated administrative division of identification vehicle fast, usually, the electronic license plate of different administrative divisions can be used different key code systems, and like this, thereby read write line just can judge according to custom code key code system corresponding to key code system rapid loading that electronic license plate is used.Accelerated the speed of read write line read-write electronic license plate.
Wherein, user area 13 is for the customized information of store car.Preferably the customized information of ,Gai district storage is enciphered message; By the encryption to customized information, strengthened the protection to the privacy of user data.For general electronic license plate, because its customized information is also to adopt the EPC coding, and EPC coding to the confidentiality of information a little less than, therefore it is protected according to the password authentification of electronic license plate maintaining secrecy of customized information, the password authentification of electronic license plate refers to: before the information of read write line in the read electric car plate, at first to pass through the checking of the access code of electronic license plate, and only have legal read write line just to have the access code of electronic license plate, thereby can block the information in illegal read write line read electric car plate; Yet the access code of electronic license plate easily is cracked, thereby easily cause the leakage of private data.After customized information is encrypted, even cracked the access code of electronic license plate, be able to the customized information in the read electric car plate, but because customized information is encrypted code book used and is difficult to be cracked, even therefore read customized information, but due to can't decryption this, therefore also can't the Obtaining Accurate customized information.
Preferably, user area 13 comprises: for the subarea of store car heading code VIN code, the subarea of for the annual examination of store car, stopping phase, license plate number and E-Payment sign, subarea for the store car file number, the subarea that is used for the printing card number of store electrons car plate, for the subarea of storing high-speed highway information, for storing the subarea of year/time ticket sign, inferior ticket purchase time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type.
In this preferred version, the printing card number of electronic license plate (this card number can electronic license plate of unique identification) is put into to the user area storage, be stored in the TID district of not encrypting with prior art and compare, the energy actv. is avoided illegally reading the printing card number of electronic license plate.
Preferably, one or more subareas of described user area adopt compressed encoding storage information;
Described compaction coding method is:
Character to this subarea institute canned data adopts the n bit binary data to be encoded, the corresponding n bit binary data of each character;
Wherein, the value of n is for meeting 2 nthe smallest positive integral of>=N; The binary data figure place of the character that described n is this subarea canned data; The quantity of the kinds of characters that described N need to be used for this subarea canned data.
It should be noted that, the present invention adopts the not restriction of compressed encoding storage information to which subarea in user area, can specifically set according to the actual requirements, for instance, can adopt the compressed encoding storage to the subarea of the kinds of characters negligible amounts of the subarea that stores the vehicle significant data and/or required use; As the subarea of, the subarea of store car file number and/or storage VIN code and or the subarea of the storage cart trade mark.Certainly, also can adopt the compressed encoding storage to any one or more subareas, or all subareas are all adopted to the compressed encoding storage.
In prior art, the information in each subarea, user area normally adopts ASCII character encode and store, and according to the coding rule of ASCII character, a character need to be encoded with a byte (that is, 8 bit binary data); And the coding rule of ASCII character is current techique, that is, as long as anyone has obtained the binary data in this subarea, can obtain easily corresponding information of vehicles.
Compared with prior art the preferred embodiment of the present invention has following advantage:
At first, can save storage space by actv.; It is minimum that this preferred implementation has guaranteed in the subarea to store the required binary data figure place of each character; Encode and store a character and compare with the fixing ASCII character that adopts of prior art, obviously can save each subarea storage space of user area.
Take the vehicle file number as example:
The character of the required use of vehicle file number comprises, 0~9,26 English alphabet of numeral and symbol "-", ". ", " _ ", " " are at 40 interior characters, the i.e. N=40 in store car file number subarea;
Meet 2 n>=40 smallest positive integral is 6, that is, n=6, to each character in these 40 characters, use respectively a unique coding of 6 bit binary data and storage;
A common vehicle file number comprises 14 characters, if according to prior art, the storage space of vehicle file number needs 8 * 14 totally 112 bits; Adopt compressed encoding of the present invention to be stored, each character only needs 6 bits,, means the figure place n=6 of the binary number of each character in the store car file number that is; The storage space of vehicle file number is 6 * 14 totally 84 bits, has saved 25% storage space.
Take license plate number as example:
For meaning that the character of license plate number comprises, numeral 0~9, and 26 letters, (the most last position of license plate number character means the affiliated province of vehicle or municipality directly under the Central Government to need altogether to use 36 characters, can obtain by the province number in EPC district, need in this subarea, not preserve), i.e. the N=36 in storage cart trade mark subarea;
Meet 2 n>=36 smallest positive integral is 6, that is, n=6, to each character in these 36 characters, use respectively a unique coding of 6 bit binary data and storage;
Existing license plate number comprises 5 characters, if according to prior art, the storage space of license plate number needs 8 * 5 totally 40 bits; Adopt compressed encoding of the present invention to be stored, each character only needs 6 bits,, means the figure place n=6 of the binary number of each character in the storage cart trade mark that is; The storage space of license plate number is 6 * 5 totally 30 bits, has saved 25% storage space.
The vehicle of the take annual examination date is example:
For the character that means the vehicle annual examination date, comprise, numeral 0~9, need to only be used 10 characters altogether, i.e. the N=10 in store car annual examination date subarea;
Meet 2 n>=10 smallest positive integral is 4, that is, n=4, to each character in these 10 characters, use respectively a unique coding of 4 bit binary data;
The vehicle annual examination date comprises date totally 8 characters, if according to prior art, the storage space on vehicle annual examination date needs 8 * 8 totally 64 bits; Adopt compressed encoding of the present invention to be stored, each character only needs 4 bits, that is, store car means the figure place n=4 of the binary number of each character in the annual examination date; The storage space on vehicle annual examination date is 4 * 8 totally 32 bits, has saved 50% storage space.
Other subarea information are stored required storage space and are calculated similar to the account form of vehicle file number, those skilled in the art are obviously can be by foregoing description beyond all doubt determines and does not repeat them here the storage space that other each subarea storage spaces are required and the advantage of comparing with existing storage mode.
Secondly; the preferred embodiment of the present invention can also be strengthened the protection to subarea information; owing to having adopted compressed encoding but not general ASCII character store; the character that each binary data is corresponding is personal settings; therefore; even the binary data of subarea information that had illegal read write line to obtain, can not obtain corresponding information.And legal read write line can obtain corresponding information by the subarea information character of pre-save and the correspondence table of binary coded data.
Again, because read write line often need to be read the electronic license plate information of vehicle in motion, if the data volume read is too large, may cause also complete reading not of data, vehicle has rolled read write line actv. read range away from; Obviously, the speed of a motor vehicle is faster, and the data volume that read write line can effectively read is also just fewer; The preferred embodiment of the present invention adopts compressed encoding, greatly reduced the bit number of binary data corresponding to subarea information, therefore when read write line read electric car plate, the data volume of required transmission has also reduced accordingly, improved reading efficiency, when the electronic license plate from high speed moving vehicle reads subarea information, can further improve the completeness and efficiency read.
It should be noted that; subarea for the store car file number adopts permanent write-protected mode to carry out the data storage; namely; the data of storing for the subarea of store car file number can only be readable under cryptoguard; can rewrite in no instance; therefore the vehicle file number of its storage can't be by counterfeit and alter; can be used as unique identify label of each car; thereby the information that guarantees electronic license plate be with vehicle itself one to one; facilitate functional department to manage, improved the safety to car owner's secret protection simultaneously.
By user area being divided into to the mode in a plurality of subareas, on the one hand, for read write line, it can be read each subarea respectively, accelerates reading speed.Although on the surface, it is many that its number of times that it reads with respect to the existing mode once read becomes, and because the mode once read needs all data in the read electric car plate, the data volume read is more; And the mode repeatedly read but can only read the data that need, thereby reduce the data volume read; Although it is many that the number of times that on surface, it reads becomes, by verifying it, reading speed is fast all the better in fact.On the other hand, read write line can arrange the decryption channel of a plurality of parallel runnings therein, and after by piece, reading data, the data that relevant block is read are sent into corresponding with it decryption channel, is decrypted, to accelerate deciphering speed.
It should be noted that, the size of user area is not less than 512bits, and the size in Zhong Ge subarea, user area is not less than 64bits.
It should be noted that, above-mentioned each subarea is when actual storage, one or more block datas in can be chip used corresponding to electronic license plate, for example: when the Higgs-3RFID IC of the chip used employing of electronic license plate Alien technology company, because this chip has the block data of eight storing subscriber information, first in Fig. 3 is to the 8th block data 21,22,23,24,25,26,27,28, when actual storage, to correspond to for the subarea of store car heading code VIN code the first block data 21 and the second block data 22, to stop the phase for the annual examination of store car, the subarea of license plate number and E-Payment sign corresponds to the 3rd block data 23, to correspond to for the subarea of store car file number the 4th block data 24, to correspond to the 5th block data 25 for the subarea of the printing card number of store electrons car plate, to correspond to for the subarea of storing high-speed highway information the 6th block data, will be for storing year/time ticket sign, inferior ticket is bought the time limit, inferior fare ticket type type, the charge road numbering of passing through, the annual ticket expiration time, the subarea of annual ticket deduction and exemption sign and annual ticket type corresponds to the 7th block data, the 8th block data is reserved.It should be noted that, the size of above-mentioned eight blocks of data pieces is fixed and is identical, its purpose is for unified standard, and be convenient to the purpose that read write line is read and write, and the size of block data so is set, may cause some block data to need the situation of reserved data position (i.e. " null character (NUL) ") to occur, the data bit reserved for these can be so that add required data later.In addition, while utilizing above-mentioned each data block store information, data centralization is stored in latter half to the seven block datas of the first block data as far as possible, by 13 two ends, user area blank, arbitrarily add data after so being convenient to, two blank two ends do not take storage space, reach the purpose of effective saving storage space.
Above-mentioned from the structural solid of electronic license plate, it is divided into to the Si Ge district, especially the customized information of the general management information of vehicle and vehicle is separately stored in different zones, thus the convenient management to information in electronic license plate and reading.
On the basis of the structure of above-mentioned electronic license plate, continuation describes the embodiment of the read method of information in electronic license plate provided by the invention, obviously above-mentioned while introducing the structure of electronic license plate, the reading manner that may relate to some is illustrated, therefore for above-mentioned related to and the part do not explained in the following description, it can be applied in following explanation certainly.
Please refer to Fig. 4, is the schematic flow sheet of the embodiment of the read method of information in electronic license plate provided by the invention.It comprises:
Step S31, read write line are scanned electronic license plate, obtain required information from electronic license plate.
Obtaining required information herein, from electronic license plate comprises:
Step S311, obtain the general management information of vehicle from the EPC memory space.Wherein, the general management information of vehicle is Noncoded Information.The general management information of the vehicle of its storage includes but not limited to: province number, number plate kind, character of use, city number, vehicle type, bonded area vehicle mark, whether can go up sign, ton/seat value and passenger-cargo sign at a high speed.
And/or, step S312, obtain the customized information of vehicle from user area.
Step S32, by the information reporting that obtains to traffic control system.
In above-mentioned, the customized information that obtains vehicle from user area comprises: from the subarea for store car heading code VIN code, read the VIN code; And/or the annual examination that vehicle is read in the subarea of from the annual examination for store car, stopping phase, license plate number and E-Payment sign stops phase, license plate number and E-Payment sign; And/or, read the vehicle file number from the subarea for the store car file number; And/or, read the printing card number of car plate from the subarea of the printing card number for the store electrons car plate; And/or, read Expressway Information from the subarea for the storing high-speed highway information; And/or, read year/time ticket sign, inferior ticket from the subarea of buying time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type for storing year/time ticket sign, inferior ticket and buy time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket and reduce or remit and indicate and the annual ticket type.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.

Claims (14)

1. an electronic license plate, is characterized in that, comprising: for the electric product coding EPC memory space of the general management information of store car with for the user area of the customized information of store car.
2. electronic license plate as claimed in claim 1, it is characterized in that: the user area of the described customized information for store car comprises the combination in following arbitrary subarea or a plurality of subareas:
Subarea for store car heading code VIN code, the subarea of for the annual examination of store car, stopping phase, license plate number and E-Payment sign, subarea for the store car file number, the subarea that is used for the printing card number of store electrons car plate, for the subarea of storing high-speed highway information, for storing the subarea of year/time ticket sign, inferior ticket purchase time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type.
3. electronic license plate as claimed in claim 2, it is characterized in that: the customized information that store the user area of the described customized information for store car is encrypted;
And/or the described subarea for the store car file number adopts permanent write-protect to carry out the data storage;
And/or the size of the user area of the described customized information for store car is not less than 512bits, the size in the Ge subarea, user area of the described customized information for store car is not less than 64bits.
4. electronic license plate as claimed in claim 1, it is characterized in that: the general management information of described vehicle comprises: province number, city number, bonded area vehicle mark, character of use, vehicle type, whether can go up sign, ton/seat value, number plate kind and passenger-cargo sign at a high speed.
5. electronic license plate as claimed in claim 2 is characterized in that:
One or more subareas in described user area adopt compressed encoding storage information;
Described compaction coding method is:
Character to this subarea institute canned data adopts the n bit binary data to be encoded, the corresponding n bit binary data of each character;
Wherein, the value of n is for meeting 2 nthe smallest positive integral of>=N; The binary data figure place that described n is this subarea store information word symbol; The quantity of the kinds of characters that described N need to be used for this subarea canned data.
6. electronic license plate as described as any one in claim 1-5, it is characterized in that: described electronic license plate also comprises: for the memory access password with kill the protected zone of instruction, and for depositing the tag identifier TID memory space of custom code and vendor code.
7. electronic license plate as claimed in claim 6, is characterized in that: the authentication code that described custom code is the described electronic license plate legitimacy of sign; A plurality of electronic license plates have identical custom code.
8. electronic license plate as claimed in claim 7, is characterized in that, the product batches number that described custom code is administrative division number and/or electronic license plate.
9. electronic license plate as claimed in claim 6, it is characterized in that: described electronic license plate adopts the chip with dynamic recovery function to realize, and the described custom code of storing for the tag identifier TID memory space of depositing custom code and vendor code is according to described dynamic recovery customizing functions.
10. electronic license plate as claimed in claim 1 is characterized in that:
Described EPC preserves memory space the password version number of described electronic license plate;
Described password version number generates access code for the electronic license plate read write line.
11. the read method of information in an electronic license plate is characterized in that: comprising:
Read write line is scanned electronic license plate, and the general management information of vehicle is read in the EPC memory space of the general management information for store car from described electronic license plate according to configuration requirement, and/or the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate.
12. method as claimed in claim 11 is characterized in that: the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate, comprising:
Read the VIN code from the subarea for store car heading code VIN code;
And/or the annual examination that vehicle is read in the subarea of from the annual examination for store car, stopping phase, license plate number and E-Payment sign stops phase, license plate number and E-Payment sign;
And/or, read the vehicle file number from the subarea for the store car file number;
And/or, read the printing card number of car plate from the subarea of the printing card number for the store electrons car plate;
And/or, read Expressway Information from the subarea for the storing high-speed highway information;
And/or, read year/time ticket sign, inferior ticket from the subarea of buying time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket deduction and exemption sign and annual ticket type for storing year/time ticket sign, inferior ticket and buy time limit, inferior fare ticket type type, the charge road numbering of passing through, annual ticket expiration time, annual ticket and reduce or remit and indicate and the annual ticket type.
13. method as claimed in claim 11 is characterized in that: described method also comprises:
Read custom code and vendor code from the TID memory space for depositing custom code and vendor code, according to described custom code and vendor code, described electronic license plate is carried out to validity judgement, when determining described electronic license plate when legal, carry out described according to configuration requirement the EPC memory space of the general management information for store car from described electronic license plate read the general management information of vehicle, and/or the step of the customized information of vehicle is read in the user area of the customized information for store car from described electronic license plate.
14. method as described as any one in claim 11-13 is characterized in that: the customized information that store the user area of the described customized information for store car is encrypted;
And/or, for the subarea of store car file number, adopt permanent write-protect to carry out the data storage.
And/or the size of the user area of the described customized information for store car is not less than 512bits, the size in the Ge subarea, user area of the described customized information for store car is not less than 64bits.
And/or the general management information of described vehicle comprises: province number, city number, bonded area vehicle mark, character of use, vehicle type, whether can go up sign, ton/seat value, number plate kind and passenger-cargo sign at a high speed.
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