CN201017328Y

CN201017328Y - Electronic vehicle registration having real time positioning

Info

Publication number: CN201017328Y
Application number: CNU2007200342748U
Authority: CN
Inventors: 吴曼青
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-07
Filing date: 2007-02-07
Publication date: 2008-02-06
Anticipated expiration: 2017-02-07

Abstract

The utility model relates to a number plate for automobile, in particular to an electronic number plate, Which comprises a power supply module, a main control single-chip, a LCD module, a key module, a RFID module, a RFID antenna, and a GPS module, wherein, the main control single-chip receives the signals from the GPS module, and accomplishes signal exchange with a wayside reader via the RFID module and the antenna. The utility model integrates GPS technique and RFID technique. The utility model overcomes the technical challenge that a conventional RFID electronic number plate doesn't have automobile positioning function; besides the advantages of a conventional RFID electronic number plate, including high reliability and recognition rate, easy installation and maintenance, high anti-theft performance, free of charging, and favorable for the traffic control authority to acquired traffic information, the utility model can provide important traffic control information, such as automobile state, route, current location, speed, direction, automatic fee charging, and over-speed monitoring information, etc.

Description

Electronic license plate with real-time positioning

Affiliated technical field

The utility model discloses a kind of car plate that is used for motor vehicle.

Background technology

China is the fastest country of highway foundation Facilities Construction in the world today, it also is the fastest-rising country of transport need, along with the fast rise of China's motor vehicle quantity, the traffic problems of Yin Faing are also more and more serious thus, are difficult to vehicle is effectively managed with traditional method.Along with the development of Intelligent traffic management systems, the appear as digitizing, the robotization of vehicle identification and the intellectuality of vehicle management that realize information of vehicles of electronic license plate provide a good front-end information platform.Electronic license plate can well remedy many defectives of conventional metals car plate as the carrier of store car information, as easily stolen, easily counterfeit, safeguard inconvenience etc.

Electronic license plate adopts REID, characteristics such as reliability height, discrimination height, installation and maintenance be easy are arranged, can be widely used in and comprise and are open to the custom ETC (do not stop charge automatically and management), the many formulas joint operations of large-scale vanning management, government's (commercial, private) special transport vehicle team management, automatically charging in car park management, safety door access control system, customs vehicle is tested place system automatically, airport ground transports and field such as logistics management.Electronic license plate it phonecard, the credit card-sized of usefulness is similar at ordinary times with us, it can be stored in the inside to the Back ground Information of vehicles such as mark of car, vehicle, color, vehicle is when the base station of being made up of microwave read write line, antenna and computing machine that is provided with by the crossing, need not stop, in several meters far away scope, just can quote the information on the electronic license plate automatically.Electronic license plate can also be as a kind of effectively anti-theft technique, if car is stolen, the public security officer can circulate a notice of each base station to the license plate number of stolen vehicle and vehicle, color etc., when this car during by the base station, will be blocked.Electronic license plate just is equivalent to the electronic identity of vehicle.Electronic license plate can be finished drive-in toll, some ecommerce purposes that also have other, as long as relating to a series of commercial acts of vehicle can cooperate with bank and be used as stored value card or offer vehicle consumption account and use, such as refuelling station, parking lot, electronic charging can be carried out with it in residential quarters.Electronic license plate is made up of special chip, miniature antenna and anti-attaching/detaching apparatus, the base station, roadside is set up communication contact by antenna launched microwave and electronic license plate and is extracted information in the electronic license plate, be sent to the Computer Processing center on backstage, put in order by analysis and send result to different administrative authority's utilization.When an automobile that electronic license plate is housed during by the base station, roadside, the display screen of control center can accurately demonstrate the information of vehicle.The automobile that does not have an electronic license plate by the time, the toroid winding that the road on next door, base station is buried underground below infers that device also can measure car and pass through, and is judged as no truck.Magnitude of traffic flow statistics to any one period can obtain by control center.

Electronic license plate technology based on radio-frequency (RF) identification obtains application at home and abroad gradually.At present, the Yibin City in domestic Sichuan Province has been done pilot project.Such example has been arranged abroad, the electronic license plate class all has been installed, thereby well solved the problem of traffic control and toll management aspect at the vehicle that Singapore is all.And in Britain in Europe, whole country has all adopted electronic license plate supervisor motor-car.Continuous development along with Intelligent traffic management systems, the electronic license plate technology will be played the part of more and more important role, but the electronic license plate technology of Shi Yonging also exists some shortcomings of himself now, though it can finish do not stop charge automatically and management, the information of automobile effectively can be networked to backstage control center, but can not finish accurate location, the transport information intelligent management is very limited operational vehicle.

The utility model content

Technical problem to be solved in the utility model provides a kind of electronic license plate with real-time positioning that can accurately determine motor vehicle geographic location information in real time.

The technical scheme that the utility model adopted is: the electronic license plate with real-time positioning comprises power module, main control singlechip, LCD MODULE, key-press module, the RFID module, the RFID antenna, main control singlechip is connected with the RFID antenna by the RFID module, receive and transmission information by RFID module and RFID antenna, key-press module is connected with main control singlechip, for user's input operation instruction, LCD MODULE is connected with main control singlechip, and demonstration relevant information, power module provides the power supply support for each module, it also comprises the GPS module, the GPS module is connected with main control singlechip, and gps signal is imported main control singlechip.

The RFID module comprises radio-frequency front-end, Base-Band Processing, microcontroller three parts, the signal that radio-frequency front-end receives passes through the low noise power amplifier successively, common filtering, coupling mechanism, demodulator circuit is sent into baseband processing circuitry, baseband processing circuitry inside comprises that waveform amplifies, wave shaping, all over decoding, CRC detects, clock synchronization, frame synchronization, crystal oscillator, modulation circuit, the output signal of baseband processing circuitry exports antenna to after delivering to the signal modulation of coupling mechanism in radio-frequency front-end and the radio-frequency front-end, microcontroller is connected with baseband processing circuitry, and finish the exchange of data and control signal between the baseband processing circuitry, its internal circuit comprises CPU, EEPROM, the ROM circuit.

The good effect that the utlity model has is: the utility model in conjunction with the GPS technology, can substitute traditional physics car plate and based on the electronic license plate of single RFID technology on the basis of electronic license plate technology.The utility model gets access to the essential information of vehicles such as in the process of moving state of vehicle, route, current location, speed, direction by the GPS technology.The automobile that uses this electronic license plate is when running on expressway, can finish traffic administrations such as the charge automatically of not stopping, the monitoring of high speed hypervelocity, human pilot or car owner can recognize important informations such as the current particular location of vehicle, speed, direction simultaneously, and, cook up best travel route automatically according to the information that the user provides.Reader base station, roadside can obtain the relevant information of vehicle from this electronic license plate, comprise mark of car and car owner, vehicle, color etc.The utility model except the reliability height, the discrimination height that have single RFID technology electronic license plate and had, installation and maintenance are easy, theftproof performance good, non-parking charge, be convenient to traffic control department and gather the function of transport information, the important information such as state, route, current location, speed, direction of motor-driven vehicle going can also be provided, further for the driver provides convenience, also provide possible simultaneously for developing intellectual resource traffic administration and the function that relates to the ecommerce of vehicle.

Description of drawings

Fig. 1 is the utility model circuit block diagram based on RFID and GPS,

Fig. 2 adopts the circuit block diagram of concrete element for the utility model,

Fig. 3 is the circuit theory diagrams of RFID module in the utility model.

Concrete enforcement side executes

Below in conjunction with accompanying drawing the utility model is further described.

Circuit theory diagrams of the present utility model as shown in Figure 1, the circuit diagram that adopts concrete element is as shown in Figure 2.Electronic license plate, comprise power module, main control singlechip, LCD MODULE, key-press module, RFID module, RFID antenna, main control singlechip is connected with the RFID antenna by the RFID module, receive and transmission information by RFID module and RFID antenna, key-press module is connected with main control singlechip, for user's input operation instruction, LCD MODULE is connected with main control singlechip, and demonstration relevant information, power module provides the power supply support for each module, it also comprises the GPS module, and the GPS module is connected with main control singlechip, and gps signal is imported main control singlechip.

Its principle of work is: the RFID module is just made and being replied and associative operation when receiving the interrogating signal that the roadside reader sends, and Anneta module then is used to receive the reader order and sends information in the electronic license plate.The information interaction of RFID module and roadside reader is to realize that by the RFID backscatter technique reader related data that the RFID module receives can be further processed by main control singlechip.The GPS module is used to receive the signal of gps satellite, and calculates the position at the present place of automobile.The GPS module can send the elements of a fix to master controller by serial port; Master controller also can send to the GPS module order is set, with the state and the working method of control GPS module.After the positional information that main control singlechip receives the GPS module is handled, can be shown to the motorist by LCD MODULE; When automobile passed through Fare Collection System, the charge situation that electronic license plate is finished also can be shown to the motorist by LCD MODULE.

Main control singlechip is responsible for receiving the input signal of GPS module and RFID module, and gps signal is calculated, to obtain current warp, the latitude coordinate of vehicle; Then can further handle the signal that the RFID module transmits, and postback to the roadside reader.Main control singlechip can also the information that these are detailed show by LCD MODULE.The PIC18F series monolithic that the main control singlechip of this vehicle license plate system selects for use MICROCHIP company to produce.The PIC18F series monolithic is a kind of powerful single-chip microcomputer with super low-power consumption, and it has the Flash storer, in system design, in exploitation debugging and the actual application all the MCU than other have than remarkable advantages.The PIC18F series monolithic adopts Harvard's bus and class reduced instruction set computer, has abundant addressing mode, only needs 31 instructions; On-chip memory is many, can realize multiple computing.Integrated peripherals on the more sheet: 12 A/D, accurate analog comparator, hardware multiplier, 2 class frequencys can reach the clock module of 20MHz, 2 16 bit timing devices, 2 serial communication interfaces that can realize asynchronous and synchronous and multiple access, dozens of can be realized the setting of direction and the parallel input/output port of interrupt function.

The GPS module is selected the EB6801 that Taiwan HiMARK company produces in the native system, and it is the internal frame diagram of EB6801 based on AR2010 SOC and RX3650RF chip as Fig. 3.EB6801 can the full visual field of 12 passages and line trace, follows the trail of 12 satellite datas simultaneously, has the quick reacquisition ability of extremely strong signal (only 1 second reacquisition time).This module size is little, working current little (only 30mA), cost performance height.The most suitable various Embedded Application can be widely used in navigation, aviation, various navigation application field such as vehicle-mounted, hand-held.The serial data output TXDA of the serial ports A of EB6801 module can be connected with RXD2 with the TXD2 of single-chip microcomputer PIC18F with serial data input RXDA.Its power supply adopts process voltage stabilizing+3.3V power supply.RB5 with single-chip microcomputer links to each other with the 1PPS pin, and whether single-chip microcomputer can be understood EB6801 work by the state that reads RB5 normal.

LCD MODULE is selected MCG12864A8-3 for use, it is a kind of large-sized solor dot matrix (or diagram form) LCD, friendly interface, attractive in appearance, not only can character display, numeral, can also show various figures, curve and Chinese character, and can realize functions such as screen rolling up and down, animation, flicker, text feature demonstration, purposes is very extensive.This LCD MODULE is to use KS0108B and compatible Control Driver (for example HD61203B) thereof as row driver, uses KS0107B and compatible driver thereof (for example HD61203) Liquid Crystal Module as line driver simultaneously.Because KS0107B (or HD61203B) does not get in touch with MPU, so as long as provide power supply just can produce horizontal-drive signal and various synchronizing signal.Can directly control the control signal of LCD by universaling I/O port with single-chip microcomputer, simultaneously with a certain I/O mouth of single-chip microcomputer as its data bus.

The RFID module is another pith of this electronic vehicle license plate system.As shown in Figure 3, the RFID module is made of three parts: microcontroller part, Base-Band Processing part and radio frequency part.Mainly realize the non-parking charge and the vehicle relevant information management function of vehicle by this module.The information interaction of RFID module and base station, roadside is by microwave RFID technology.With regard to the producing method of upward signal, the RFID module can be divided into two kinds of active and passive types, and this difference of two kinds is that signal sends to the difference on the implementation of base station, roadside from the RFID module.In the active rfid module, carrier signal is from the carrier frequency oscillator of module self; The carrier signal of passive type RFID module then comes from the microwave signal of base station, roadside reader, only just makes response when receiving the interrogating signal of base station, roadside reader.The RFID module also can be divided into active and passive, and the operating distance of active system and reading speed are all than passive system excellence.This electronic vehicle license plate system is a car-mounted terminal, and comprehensive each side considers that the RFID module adopts active passive type.

Claims

1. the electronic license plate that has real-time positioning, comprise power module, main control singlechip, LCD MODULE, key-press module, the RFID module, the RFID antenna, main control singlechip is connected with the RFID antenna by the RFID module, receive and transmission information by RFID module and RFID antenna, key-press module is connected with main control singlechip, for user's input operation instruction, LCD MODULE is connected with main control singlechip, and demonstration relevant information, power module provides the power supply support for each module, it is characterized in that: it also comprises the GPS module, and the GPS module is connected with main control singlechip, and gps signal is imported main control singlechip.

2. the electronic license plate with real-time positioning as claimed in claim 1, it is characterized in that: the RFID module comprises radio-frequency front-end, Base-Band Processing, microcontroller three parts, the signal that radio-frequency front-end receives passes through the low noise power amplifier successively, common filtering, coupling mechanism, demodulator circuit is sent into baseband processing circuitry, baseband processing circuitry inside comprises that waveform amplifies, wave shaping, all over decoding, CRC detects, clock synchronization, frame synchronization, crystal oscillator, modulation circuit, the output signal of baseband processing circuitry exports antenna to after delivering to the signal modulation of coupling mechanism in radio-frequency front-end and the radio-frequency front-end, microcontroller is connected with baseband processing circuitry, and finish the exchange of data and control signal between the baseband processing circuitry, its internal circuit comprises CPU, EEPROM, the ROM circuit.