CN1347822A - Passive intelligent RF electronic license plate for motor vehicle and relevant system - Google Patents
Passive intelligent RF electronic license plate for motor vehicle and relevant system Download PDFInfo
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- CN1347822A CN1347822A CN 01131560 CN01131560A CN1347822A CN 1347822 A CN1347822 A CN 1347822A CN 01131560 CN01131560 CN 01131560 CN 01131560 A CN01131560 A CN 01131560A CN 1347822 A CN1347822 A CN 1347822A
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Abstract
The present invention is one computerized information managing system with non-contact passive RF intelligent chip as basic flowing data carrier and basic information unit (electronic license plate); hand set of traffic policeman as data acquisition and log-in tool; local area network as trunk; modern communication mode as network communication measure; and data structure of client/server mode. It is one complete dynamic motor vehicle managing system implemented by means of advanced non-contact RF technology, computer network technology, communication technology and data base technology.
Description
One, technical field
The invention belongs to a kind of electronic data management method and system, particularly the essential information of power actuated vehicle is implemented the method and the system thereof of electronic data management.
Two, background technology
In recent years, along with rapid development of national economy, self-propelled vehicle quantity just rapidly increases with unprecedented speed.According to rough Statistics, the power actuated vehicle of light China is 220,000 before 40 years just, are increased to 6,000 ten thousand of last year, are accompanied by the increase of vehicle, how to these vehicles carry out science, the actv. management becomes a problem that becomes increasingly conspicuous.It is reported that the network system of traffic police and Che pipe department has also dropped into a large amount of funds in this respect in recent years, constantly transforming that function is also constantly being improved and strengthened, but its weak point and management dead angle are still arranged so far.Such as present personation car plate phenomenon just never obtains radical cure.Why like this, its reason is many-sided; At first, the self-propelled vehicle of the cruising licence plate of reporting lost property to the authorities to the vehicle administration office, car pipe office is difficult to identification, and whether it really loses, and like this, some unique people are easy to obtain a car plate again, and another piece car plate is used for other vehicle.What is more even this step of reporting lost property to the authorities has all economized, and simply makes a false car plate, just sets out on a journey and travel, and so just makes away private car, steals and rob car the gap brill has been arranged, and can both utilize false car plate to set out on a journey greatly and travel, and this just makes away private car, steal and rob car market has also been arranged.In addition, in the car test process of vehicle, also there is the phenomenon of human feelings car test, the self-propelled vehicle of cruising be will be according to the rules regularly to the car test that car test is carried out of car pipe office, yet, a few peoples (such as) in order to save cost, adopt the human feelings car test, these dirty cars, sick car are on the way travelled.Leak on all these vehicle managements and deficiency have seriously influenced order of traffic, exist serious accident potential, threaten for people's life and property, so the utmost point remain to be solved.In order to solve this type of problem, there are many knowledgeable people to propose the new mode of many vehicle managements recently, also developed the device that much is used for vehicle management and control system (as Chinese patent ZL94116935.9、ZL95211545。X、ZL99210338。X)。The exploitation of these technology obviously has facilitation for management of vehicles, but existing these technology still exist many deficiencies, one is exactly that the ubiquity management function lacks systematicness, this has brought certain difficulty just for the scientific management vehicle, make that applying of technology is very difficult, the deficiency that it two is exactly that existing these technology ubiquities are antitheft, tamper-resistant function lacks, existing in other words these technique devices or equipment are easy to be removed or revise, cause management to lose authenticity, therefore still remain to be improved.
Three, summary of the invention
The objective of the invention is to deficiency, propose a kind of new management process and control system at existing management method for motor-driven vehicles and system and device.
According to the technical scheme that purpose of the present invention proposed be: with non-contact passive intelligent RF chip is mobile data carrier in basis and basic information unit (BIU) (electronic license plate); With traffic police's hand-held set data information acquisition and typing instrument when looking into car and handle; With local area network (X.25/DDN/PSTN) is trunk; In the modern communication mode is network UNICOM means; With the Client is the computer information management system of data structure.Realize the car plate management information system of power actuated vehicle.System realizes the management to power actuated vehicle with advanced person's noncontact radio-frequency technique, computer networking technology, mechanics of communication, database technology, forms a complete dynamic people---machine system.
Characteristics of the present invention are: mobile data carrier in described basis and basic information unit (BIU) are that the enclosed package passive electronic device that (best approach is on the power actuated vehicle car plate) installed additional in arbitrary position on the power actuated vehicle constitutes, the electronics package chip adopts the manufacturing of advanced intelligent RF recognition technology, also has outer enclosure material three parts to form by chip partial sum antenna part.Chip is the passive contact-free radio frequency chip, be made of read write line, controller and intelligent RF chip, and intelligent RF chip is stored control and EEPROM module and formed by radio frequency interface.Chip is passive chip (not having any battery), the power supply energy of chip is coupled to antenna on the chip and is produced electric energy by chip reading and writing device antenna transmission radio carrier signal during work, generally can reach more than the 2V, provide the element work on the chip required energy with this.And antenna is to adopt metal filament stickup or technologies such as embedding, burn into printing to make, and links to each other with the chip read write line; In electronics package, write the power actuated vehicle characteristic information, then on car plate fixing machine motor vehicle, and with serve as that a perfect management information system is set up on the basis accordingly.Total system is carried out the bidirectional data transfers of read write line and non-contact radio-frequency chip chamber by electromagnetic wave with half-duplex mode.In addition,, need read write line to send electromagnetic wave it is activated, carry out data again and transmit because electronic license plate is a kind of passive chip.The metal pair electromagnetic wave has shielding, so chip and antenna must encapsulate with non-metallic material.And electronic license plate is mounted on the appearance of vehicle or the existing car plate of vehicle, environment, vibrations, intensity, aging, dust and water protection etc. are all had higher requirements, therefore should select the good non-metallic material of performance, the present invention selects for use match steel (polyformaldehyde) to carry out the chip material encapsulation.The installation of electronic license plate combines with existing car plate does not influence existing car plate profile and size, and the circuit layout of chip is the self-distroyable disposable circuit layout simultaneously, and the possibility that chip, circuit are not copied has once more improved anti-counterfeit capability greatly.
Another characteristics of the present invention are exactly by a hand-held set, carry out reading and transmitting of data, and hand-held set is the application tool of electronic vehicle license plate system.The personnel on duty carries, and reads the car plate data by hand-held set, enquiring vehicle information, and punishment write down and by data transmission set and traffic police center master data base swap data, carry out uploading and downloading of Black List.Hand-held set mainly is made up of auxiliary circuits such as module for reading and writing and module for reading and writing antenna, micro controller system, battery and communications.Wherein module for reading and writing is universal noncontact radio frequency chip module for reading and writing, can carry out read-write operation to the radio frequency chip of the various LEG of meeting radio frequency standard.And micro controller system is to adopt very large scale integration technology, integrated CPU, memory device and I/O interface three parts on a chip and a single chip microcomputer system forming.
The present invention can use traffic constable hand-held set to look into car and punishment record also by hand-held set and computing machine communication, reaches Black List and uploads Computer Database, and will reach in the hand-held set under the Black List in the Computer Database.
Because the micro controller system input and output is Transistor-Transistor Logic level, the PC com port is the RS232 level, considers the restriction of RS232 communication distance simultaneously, adopts modem (MODEM) during communication.Microcontroller communication port RXD, TXD, PC are selected COM port or COM device or COM1 or COM2 for use, baud rate 9600, and communication media can be selected multiple mode: DDN, ethernet, ordinary telephone line or the like for use.Can realize uploading and downloading of data very easily.
The present invention is by core and the foundation of electronic license plate as the motor vehicle electronic vehicle license plate system, adopt advanced radio-frequency intelligent recognition technology, and, realized the scientific management of power actuated vehicle by the tool for transmitting of hand-held set as the information of self-propelled vehicle and electronic management system.Wherein the radio-frequency intelligent recognition technology is a up-to-date technology that develops rapidly in recent years in the world, with its high safety confidentiality, and communication high speed, ease of use, advantage such as cost is day by day cheap and being used widely rapidly.Simultaneously, because the present invention has adopted the non-contact radio-frequency passive chip as electronics package, and radio frequency chip is the product that radio-frequency technique combines with REID and since its with read write line between do not have machinery and contact, but carry out communication by " space media " electromagnetic wave.Thereby have the following characteristics:
A, facility swift to operate
Need not equipment contact during use, and non-directional, chip can skim over the read write line surface by any direction, i.e. complete operation, and it is extremely convenient to use.
B, reliability height, the life-span is long
Do not have machinery between chip and read write line and contact, so do not exist contact to read and write the various faults that may occur; Chip and read write line all do not have exposed contact, then need not worry contact damage, oxidation or come off due to chip failure; Chip and read write line are totally-enclosed waterproof, dustproof construction.
C, antifalsification
Each chip all has one to solidify 32 word length sequence numbers in chip by maker before product export, can not change in case write promptly, and the world is unique.
D, safety are good
Adopt the bi-directional verification mechanism of confirming mutually for three times between chip and read write line, in the legitimacy of read write line proofing chip, chip is also tested to the read write line legitimacy.All communication datas all encrypt in case the stop signal intercepting.All there is operator password and the access consideration of oneself each sector in the chip, and carries out chip transportation password (TC) protection.
E, one-object-many-purposes
The user can define the password and the access consideration of each memory sector as required flexibly, so that satisfy different occasions, the requirement of different purposes independently respectively.
F, antijamming capability are strong
Possess anti-collision (anticollision) mechanism, the same time can " simultaneously " be handled many chips, and the mutual data of unlikely appearance are disturbed.
And because intelligent RF chip of the present invention is that what to adopt is passive chip, make what whole electronics package can be got up by the non-metallic material enclosed package fully, so just can greatly improve the service life and the reliability of electronics package, simultaneously owing in electronics package, adopted the self-distroyable disposable circuit layout, and structurally also adopted disposable self-damage structure, make the possibility that chip, circuit are not copied once more, thereby improved anti-counterfeit capability greatly.
The present invention adopts hand-held set to carry out reading of data and transmits, more make the digital communication of flexible motor vehicle management change into for possibility, by the data read of hand-held set to vehicle, and exchange with the information system of administrative center, can realize the management of multiple function, this also just for comprehensive scientific management of power actuated vehicle provides condition, makes the present invention have extremely strong practicality, is worth popularizing in an all-round way using.
Four, accompanying drawing and explanation
Fig. 1 is an electronic vehicle license plate system constructional drawing of the present invention;
Fig. 2 forms constructional drawing for the passive electronic device of enclosed package of the present invention;
Fig. 3 is a cell phone composition frame chart of the present invention;
Fig. 4 is an entire system module diagram of the present invention;
Fig. 5 is the structural representation of an electronic license plate embodiment of the present invention.
Among the figure 1, be antenna 2, for car plate 3, for encapsulation screw 4, electronics package 5, for chip 6, for electronics package protective cover 7, be the outer enclosure material
Five, the specific embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment one
Adopt advanced radio-frequency intelligent recognition technology, change electronic license plate at common car plate, and with this core and foundation as the motor vehicle electronic vehicle license plate system, its method is to go up at the encapsulation screw (3) of car plate (2) to increase an electronics package (4), electronics package (4) also has outer enclosure material (7) three parts to form by chip part (5) and antenna part (1), wherein chip part (5) is the non-contact radio-frequency chip, and by radio frequency interface, storage control and EEPROM module are formed.Electronic apparatus system carries out the bidirectional data transfers of read write line and non-contact radio-frequency chip chamber with half-duplex mode under the 13.56MHz frequency of operation.Data are kept among the EEPROM, and storage control module is responsible for controlling the read-write to EEPROM, comprise password checking, access limit control and some plus and minus calculations and data encryption etc.Untouchable radio frequency chip of the present invention adopts German KABA/LEGIC radio frequency chip; And the antenna part of electronics package adopts metal filament stickup or technologies such as embedding, burn into printing to make:
Antenna parameter:
Frequency of operation 13.56MHZ.
The resistance of aerial coil, about 6.07 Europe Mei
The inductance of aerial coil, about 7.5 μ H
Lcoil＝1.2×L×N
2×ln(4*L/D)
L: the length L=2R π=2.3 * 3.14=72.2mm of aerial coil one circle
N: the aerial coil number of turns is generally 15 circles
D: the width D=0.22mm of antenna coil diameter or conductor
The formula of the inductance of aerial coil can only be as the usefulness of estimation first, and the inductance of actual aerial coil must be decided by apparatus measures, but deviation can be very not big.
Quality factor 30＜Qcoil＜60 of general aerial coil.
Electronics package (untouchable intelligent chip) antenna, diameter is 23mm, and the number of turn is 15 circles, and antenna coil diameter is 0.22mm.
Antenna is encapsulated by match steel (polyformaldehyde) material with chip, forms an osed top electronics package individual components, and its shape can be circular or other shape.
Electronics package (4) is installed onboard by encapsulation screw (3) with car plate (2), just constituted electronic license plate.
And hand-held set is a portable small controller, mainly is made up of auxiliary circuits such as module for reading and writing and module for reading and writing antenna, micro controller system, battery and communications.Module for reading and writing is the universal noncontact radio frequency chip module for reading and writing that adopts the radio-frequency technique development and production, can carry out read-write operation to the radio frequency chip of the various LEG of meeting radio frequency standard.Finish read-write operation by radiowave between noncontact radio frequency chip and the read write line.The communication of the two is 13.56MHZ frequently.The noncontact radio frequency chip itself is a passive chip, when read write line carries out read-write operation to chip, the signal that read write line sends is made up of two parts stack: a part is a power supply signal, after this signal is received by chip, supplies with chip operation with the transient energy of L/C generation of itself.Another part then is instruction and data-signal, and commander's chip is finished the reading of data, revised, storage etc., and return signal is given read write line.Standard RS-232, speed 9600Bit, no parity.By the formed read-write system of non-contact radio-frequency chip, no matter be hardware configuration, or operating process has all obtained very big simplification, simultaneously by means of advanced management software, but the operating mode of off line all makes the reading and writing data process more simple.
Existing antenna is an oblong, conductor lines diameter D=1mm, and length=110mm, wide=50mm, number of turn N=4.
Micro controller system adopts 32 MC68332 micro controller systems that U.S. MOTOROLA company releases in the hand-held set.Its data-handling capacity reaches 32, and addressing space reaches the 16M byte.It has higher execution speed and stronger function, can satisfy many-sided application requirements in the high-tech sector, has represented micro controller system developing direction from now in many aspects.
Because hand-held set working environment randomness is big, and the most of the time all at outside work, the comformability of environment is had higher requirement, so complete machine running temperature applicable area is-35 ℃～70 ℃; Waterproof, because open-air operation and often suffer misty rain weather, thereby keyboard adopts is fully enclosed touch keyboard, binding site has also adopted special water-tight device, can operate in the rainy day fully: dust protection because complete machine is an osed top, thereby has good dust-proof; Shockproof, because the machine intimate chip almost all adopts obedient chip encapsulation, thereby the anti-seismic performance height; Meet the appearance design of human engineering, exquisite small and exquisite, portable; Built-in 32M Flash Memory can make data preserve unlikely losing 10 years after power down; Hand-held set is equipped with general purpose terminal development language system, can use the higher level lanquage of similar C to carry out the application program establishment under DOS environment on the PC, and compiling downloads in the hand-held set then, and function can make amendment easily, expand according to application requirements; And adopt the liquid crystal display of four lines Chinese character, and it is backlight to have EL, all operations all has character reminding, is simple and easy to use.
Power supply adopts efficient lithium ion battery in the hand-held set.Safe in utilization, high capacity, long life, have series of advantages such as fast charging and discharging, memory-less effect, volume are little, light weight.Cycle life can reach 1000 times.
The micro controller system power consumption is very little in the hand-held set, particularly is provided with several working ways, and these mode of operation comprise wait, suspends sleep, free time, mode of operation such as economize on electricity.At one's leisure, its power consumption is 1.5mA/h only, and in battery saving mode, its power consumption has only 0.5mA/h.But the module for reading and writing in the hand-held set, consumption of current is huge, and its power consumption has 200mA/h approximately, and the battery in the hand-held set can satisfy the power consumption requirement of micro controller system fully, but can not satisfy the power consumption requirement of module for reading and writing for a long time.So, adopt programming control to the power supply of module for reading and writing, when needing read-write operation, connect the module for reading and writing power supply, read-write operation finishes, and closes the module for reading and writing power supply.So just the requirement of power supply can have been satisfied.Cell of mobile telephone set adopts 1100mAh, 3.6V lithium ion battery, and once charging fully can realize standby time 30 days, read-write number of times 10000 times.
Hand-held set and computing machine communication can be looked into hand-held set car and punishment record, reach Black List and upload Computer Database, and will reach in the hand-held set under the Black List in the Computer Database.
Because the micro controller system input and output is Transistor-Transistor Logic level, the PC com port is the RS232 level, considers the restriction of RS232 communication distance simultaneously, adopts modem (MODEM) during communication.Microcontroller communication port RXD, TXD, PC are selected COM port or COM device or COM1 or COM2 for use, baud rate 9600, and communication media can be selected multiple mode: DDN, ethernet, common electrical hot line or the like for use.Can realize uploading and downloading of data very easily.
Electronic license plate be data carrier unit basic in the system its mainly to act on be exactly the essential information of storing and carrying vehicle, and it is inseparable with vehicle, make it to become the cermet of identification of vehicle, when needs are inquired about, can read and write it by handset apparatus very easily.
The performance figure of electronic license plate:
Capacity: 1k byte
Operating ambient temperature :-30 ℃-80 ℃
Antenna diameter: 23mm
Antenna inductance: about 7.5 μ H
In electronic license plate, deposit the main information of self-propelled vehicle in according to " self-propelled vehicle register information Database field name Naming conventions " on the chip.
The 3D that has designed a uniqueness on hand-held set flies shuttle, so just greatly facilitates the operation of user to hand-held set, makes most functions of hand-held set singly refer to and can finish by " pressing once changeing one " one hand.
Hand-held set is when reading the car plate internal information, data that are about to read and intrasystem data compare, if finding to have local or this car plate in violation of rules and regulations registers on system's Black List, promptly sounding, prompting is on duty looks into the car personnel and notes, the personnel on duty needn't manually be checked item by item information of vehicles again, so just improved greatly and looked into car efficient, made things convenient for use, just can finish the verification to a car several seconds, promptly improved speed and improved the accuracy of looking into car again.
The data upload equipment that the hand-held set utilization is equipped with at random, can realize very easily and being connected of traffic police's master data base, can carry out uploading and downloading of data timely, and within it portion we design a charger rapidly and efficiently integrated, make hand-held set when carrying out the data upload download, just can realize charging hand-held set with primary server database.
Hand-held set is a special use instrument on duty in traffic police's hand, its level security is also particularly important, hand-held set requires the user of service to brush traffic police's ID (identity number) card when start, and correctly input password and behind system validation, the ability login system enters main menu and starts working, traffic police's identity information also writes in the hand-held set simultaneously, and when enforcing the law operation, needing to input password too just can finish, so just guaranteed " hand-held set-traffic police card-traffic police personal identification number " trinity, indispensable.Even hand-held set is lost, not having the traffic police to block with the cooperation of password can not operate.
Hand-held set is as traffic police's instrument used in everyday, and its function is very powerful, and it mainly contains: read to look into car plate, system's Black List inquiry and input, Default penalty, communication function, and system such as is provided with at function.All operations all has Chinese prompt to cooperate, and is simple and clear.After opening the hand-held set power supply, promptly need to brush traffic police card and the input personal identification number is confirmed user's identity, if do not brush traffic police's card, any operation is all invalid.
1, read to look into the car plate function, this function is carried out the back hand-held set and is promptly begun to read the car plate data, and the data that read are checked, and finding has against regulation place, the prompt alarm of promptly sounding.
2, the inquiry that Black List function, hand-held set provide Black List with increase function, enter the Black List function after, list and show Black List and increase the Black List item, by showing Black List, can display system in all Black Lists, also can inquire about according to car plate.Example: two at enquiry number end be the vehicle of " 45 ", then after the input " 45 ", press " OK " then hand-held set can to list two at end be the Black List vehicles of " 45 ".Hand-held set is supported the inquiry of 1-5 position, end.The input Black List, behind the system prompt inputting license plate number, by " OK " system prompt input personal identification number, input is correct, prompting " importing successfully ", otherwise, can not finish.
3, Default penalty, the personnel on duty can be by the hand-held set record to violating the regulations punishment the time, and record is uploaded to traffic police network center.After entering function, select corresponding method of punishment, behind the inputting license plate number, press the system prompt operation and get final product.
4, communication function, select this function after, hand-held set promptly begins to detect communication line, and is normal as communication hardware, then inserts master network according to the telephone number of systemic presupposition, if communication is unsuccessful, can automatic retry, till connecting.Communication is communicated with, and hand-held set is looked into car record, punishment record, Black List situation with in-to-in and shifted to master data base, more up-to-date Black List information is downloaded in the hand-held set afterwards.Automatically hang up afterwards.
5, system is provided with function, and system is provided with function can be to time, date, keypad tone, the liquid crystal display of hand-held set, and system items such as Dial-up Network telephone number are made amendment.
Software system are one of core component parts of whole electronic license plate management system, this part is responsible for the data taxonomic revision that will gather, filter analysis, and the uploading and downloading of responsible data, as seen require the whole software system to accomplish complete function, compatible strong, communication and controllable function are powerful, method for processing business is flexible, with other system good information sharing function will be arranged, and has high safety performance and rights management distribution function.
Therefore native system software adopts tri-layer C/S model, increased the difficulty of program design, compare with other models commonly used, this model is owing to increased application server between client and database server side, be convenient to the maintenance and the upgrading of system, the while client is the accessing database server directly, has increased safety.
Claims (8)
1, power actuated vehicle non-contact passive intelligent RF electronic car plate and system is characterized in that:
Described power actuated vehicle method for supervising is to serve as flow data carrier and basic information unit (BIU) of basis with non-contact passive intelligent RF chip; With traffic police's hand-held set data information acquisition and typing instrument when looking into car and handle; With the local area network is trunk; In the modern communication mode is network UNICOM means; With the Client is the computer information management system of data structure.
2, power actuated vehicle non-contact passive intelligent RF electronic car plate as claimed in claim 1 and system, it is characterized in that: mobile data carrier in described basis and basic information unit (BIU) are that the enclosed package passive electronic device that arbitrary position installs additional on power actuated vehicle constitutes, electronics package also has outer enclosure material three parts to form by chip partial sum antenna part, chip is the passive contact-free radio frequency chip, by read write line, controller and intelligent RF chip constitute, and intelligent RF chip is by radio frequency interface, storage control and EEPROM module are formed, chip is a passive chip, and the power supply energy of chip is coupled to antenna on the chip and is produced electric energy by chip reading and writing device antenna transmission radio carrier signal during work; And antenna is to adopt metal filament stickup or technologies such as embedding, burn into printing to make, and antenna links to each other with the chip read write line, has write the power actuated vehicle characteristic information in electronics package, and the outer enclosure material is a non-metallic material.
3, non-contact passive intelligent RF electronic car plate as claimed in claim 1 or 2 and system is characterized in that: electronics package on car plate fixing machine motor vehicle, and with serve as that a perfect management information system is set up on the basis accordingly.
4, non-contact passive intelligent RF electronic car plate as claimed in claim 1 or 2 and system is characterized in that: total system is carried out the bidirectional data transfers of read write line and non-contact radio-frequency chip chamber by electromagnetic wave with half-duplex mode.
5, non-contact passive intelligent RF electronic car plate as claimed in claim 1 or 2 and system is characterized in that: the outer enclosure material is match steel (polyformaldehyde) material.
6, non-contact passive intelligent RF electronic car plate as claimed in claim 1 or 2 and system is characterized in that: the circuit layout of chip is the self-distroyable disposable circuit.
7, non-contact passive intelligent RF electronic car plate as claimed in claim 1 and system, it is characterized in that: described hand-held set is a portable small controller, mainly form by auxiliary circuits such as module for reading and writing and module for reading and writing antenna, micro controller system, battery and communications, wherein module for reading and writing is to adopt noncontact radio frequency chip module for reading and writing, finish read-write operation by radiowave between noncontact radio frequency chip and the read write line, the two be electromagnetic communication, standard RS-232, speed 9600Bit, no parity.
8, non-contact passive intelligent RF electronic car plate as claimed in claim 1 or 2 and system, it is characterized in that: the hand-held set keyboard is a fully enclosed touch keyboard, binding site has also adopted special water-tight device, built-in 32M Flash Memory, hand-held set is equipped with general purpose terminal development language system, can under DOS environment on the PC, use the higher level lanquage of similar C to carry out the application program establishment, compiling downloads in the hand-held set then, and function can make amendment easily, expand according to application requirements; And adopt the liquid crystal display of four lines Chinese character, and it is backlight to have EL, all operations all has character reminding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131560 CN1347822A (en) | 2001-11-23 | 2001-11-23 | Passive intelligent RF electronic license plate for motor vehicle and relevant system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131560 CN1347822A (en) | 2001-11-23 | 2001-11-23 | Passive intelligent RF electronic license plate for motor vehicle and relevant system |
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| Publication Number | Publication Date |
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| CN1347822A true CN1347822A (en) | 2002-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01131560 Pending CN1347822A (en) | 2001-11-23 | 2001-11-23 | Passive intelligent RF electronic license plate for motor vehicle and relevant system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054358A (en) * | 2009-11-10 | 2011-05-11 | 中兴通讯股份有限公司 | Control system and method of electronic license plate |
| CN102354408A (en) * | 2011-09-22 | 2012-02-15 | 东北大学 | Handheld regional vehicle monitoring device based on radio frequency identification (RFID) technology |
| CN102402858A (en) * | 2011-10-25 | 2012-04-04 | 深圳市华盈泰科技有限公司 | Vehicle electronic identity recognition information network system |
| CN101697251B (en) * | 2009-10-12 | 2012-05-23 | 骆勇强 | Intelligent dynamic management system of motor vehicles |
| CN106131012A (en) * | 2016-07-11 | 2016-11-16 | 天津中兴智联科技有限公司 | The interface protocol of a kind of electronic license plate unifies adaptation method |
| CN106379254A (en) * | 2016-10-13 | 2017-02-08 | 天津恺丰义科技有限公司 | License plate with electronic tag |
-
2001
- 2001-11-23 CN CN 01131560 patent/CN1347822A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101697251B (en) * | 2009-10-12 | 2012-05-23 | 骆勇强 | Intelligent dynamic management system of motor vehicles |
| CN102054358A (en) * | 2009-11-10 | 2011-05-11 | 中兴通讯股份有限公司 | Control system and method of electronic license plate |
| CN102354408A (en) * | 2011-09-22 | 2012-02-15 | 东北大学 | Handheld regional vehicle monitoring device based on radio frequency identification (RFID) technology |
| CN102402858A (en) * | 2011-10-25 | 2012-04-04 | 深圳市华盈泰科技有限公司 | Vehicle electronic identity recognition information network system |
| CN106131012A (en) * | 2016-07-11 | 2016-11-16 | 天津中兴智联科技有限公司 | The interface protocol of a kind of electronic license plate unifies adaptation method |
| CN106131012B (en) * | 2016-07-11 | 2019-12-03 | 天津中兴智联科技有限公司 | A kind of interface protocol of electronic license plate unifies adaptation method |
| CN106379254A (en) * | 2016-10-13 | 2017-02-08 | 天津恺丰义科技有限公司 | License plate with electronic tag |
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