CN102707303A

CN102707303A - Vehicle positioning device based on radio frequency identification (RFID) and global positioning system (GPS)

Info

Publication number: CN102707303A
Application number: CN2012101903266A
Authority: CN
Inventors: 施文灶; 王平; 黄晞
Original assignee: Fujian Normal University
Current assignee: Fujian Normal University
Priority date: 2012-06-11
Filing date: 2012-06-11
Publication date: 2012-10-03

Abstract

The invention relates to a vehicle positioning device based on radio frequency identification (RFID) and a global positioning system (GPS). The vehicle positioning device consists of an electronic tag and a vehicle-mounted positioner, wherein the electronic tag communicates with the vehicle-mounted positioner through ultra-high frequency signals; the vehicle-mounted positioner consists of an RFID reader, a GPS receiver, a short-distance wireless transceiver, a general packet radio service (GPRS) communication module and a microprocessor; the RFID reader, the GPS receiver, the short-distance wireless transceiver and the GPRS communication module are connected with the microprocessor respectively; and a vehicle reads accurate position information stored in the electronic tag, calculates GPS errors, and broadcasts the errors to adjacent vehicles through the short-distance wireless transceiver to realize accurate positioning of the vehicles in a road network. The vehicle positioning device has the advantages that the accurate positioning of the vehicles can be realized, and the position information can be broadcasted to ensure that the adjacent vehicles can synchronously update the position information.

Description

A kind of vehicle locating device based on RFID and GPS

Technical field

The present invention relates to a kind of vehicle location field, is a kind of vehicle locating device based on RFID and GPS specifically.

Background technology

Along with motor vehicles are increasing, the problems such as operation security of management of vehicles and vehicle highlight day by day, and how solving this type of problem has become the focus that informatization is paid close attention to.People expect to have a kind of technology, and positional information and the whole process that can understand vehicle in real time provide security protection and guide service for it, and the process of obtaining vehicle position information is called as vehicle location.GPS (GPS) is to use vehicle positioning technology the most widely at present.Application number is the Vehicle Positioning Equipment and the localization method thereof of 201110169738.7 patented claim; Adopt GPS receiver module, GPRS wireless communication module, LCD and analog quantity, on-off value data acquisition module to be connected respectively on the flush bonding processor, realize the monitoring and the important parameters acquisition of remote vehicle.But the application of GPS exists some problems: as locate inaccurately, GPS normal plane positioning error is at 10-20 rice, if receive such as weather, many factor affecting such as GPS of America policy sometimes also can be bigger; Secondly, the covering problem of gps satellite causes receiving the existence of blind area; In addition, GPS combines map work, usually because the renewal of map is untimely causes locating and the maximum error when guiding.In order to address the above problem; Various householder method and devices based on the GPS location are suggested one by one and realize; Be the city vehicle location landmark sensor of 200520071759.5 patented claim like application number, use nothing " blind area " location and navigation that short-distance wireless positioning error correction algorithm is realized city vehicle, accurately reliable; But need to dispose more sensor, cost is higher.

Summary of the invention

The invention provides a kind of vehicle locating device, can overcome the problem that present vehicle location exists, have precision height, low cost and other advantages based on RFID and GPS.

For realizing that the technical scheme that target of the present invention adopts is:

A kind of vehicle locating device based on RFID and GPS is made up of electronic tag and vehicle positioning device; Electronic tag and vehicle positioning device communicate through ultra-high frequency signal; The vehicle positioning device is made up of RFID reader, gps receiver, short-range wireless transceiver, GPRS communication module and microprocessor; RFID reader, gps receiver, short-range wireless transceiver and GPRS communication module link to each other with microprocessor respectively; Be in vehicle in the communication range with electronic tag through reading the accurate location information of storing in the electronic tag; Calculate the error of GPS, and it is broadcast to adjacent vehicle through short-range wireless transceiver, realize the accurate location of vehicle in the road network.

Described electronic tag is installed on the Traffic Information board.

Described electronic tag is a passive electronic label.

Described short-range wireless transceiver adopts the 802.11p communication protocol that is widely used in car self-organization network.

Described GPRS communication module is used for the positional information of vehicle self is sent to management/dispatching center, simultaneously the inquiry of receiving management/dispatching center.

The invention has the beneficial effects as follows: can realize the accurate location of vehicle, and can positional information be broadcasted, make adjacent vehicle upgrade positional information synchronously.Achievement can be used for public transit vehicle and transport column management and scheduling, vehicle security protection in addition to aspects such as the route guidance of private vehicle and planning.

Description of drawings

Fig. 1 is the structured flowchart of vehicle positioning device of the present invention;

Fig. 2 is an application implementation illustration intention of the present invention.

Embodiment

Describe embodiment of the present invention in detail below in conjunction with accompanying drawing.

Among Fig. 1,101 is microprocessor; 102 is the RFID reader; 103 is gps receiver; 104 is short-range wireless transceiver; 105 is the GPRS communication module.RFID reader (102), gps receiver (103), short-range wireless transceiver (104) and GPRS communication module (105) link to each other with microprocessor (101) respectively.

Among Fig. 2,201 is gps satellite; 202 for being installed in the electronic tag on the transport information board; 203 and 204 are the vehicle that is equipped with the vehicle positioning device, and wherein vehicle (203) is in the communication range with electronic tag, and vehicle (204) is in outside the communication range with electronic tag; S1～S3 is three consecutive steps realizing vehicle location.At step S1, vehicle (203) receives the GPS positional information; At step S2, vehicle (203) is in the communication range with electronic tag, reads the accurate location information of electronic tag storage, and with step S1 in the GPS positional information that receives compare, calculate GPS and receive error; At step S3; Vehicle (203) receives error through short-range wireless transceiver with the GPS that calculates among the step S2 and broadcasts; Vehicle this moment (204) is in vehicle (203) the short-distance wireless coverage, and the GPS that utilizes vehicle (203) to send receives the positional information of error correction oneself.

Claims

1. vehicle locating device based on RFID and GPS; It is characterized in that: device is made up of electronic tag and vehicle positioning device; Electronic tag and vehicle positioning device communicate through ultra-high frequency signal; The vehicle positioning device is made up of RFID reader, gps receiver, short-range wireless transceiver and GPRS communication module and microprocessor, and RFID reader, gps receiver, short-range wireless transceiver and GPRS communication module link to each other with microprocessor respectively.

2. a kind of vehicle locating device based on RFID and GPS according to claim 1 is characterized in that electronic tag is installed on the Traffic Information board.

3. a kind of vehicle locating device based on RFID and GPS according to claim 1 is characterized in that electronic tag is a passive electronic label.

4. a kind of vehicle locating device based on RFID and GPS according to claim 1 is characterized in that short-range wireless transceiver adopts the 802.11p communication protocol that is widely used in car self-organization network.

5. a kind of vehicle locating device based on RFID and GPS according to claim 1 is characterized in that the GPRS communication module is used for the positional information of vehicle self is sent to management/dispatching center, simultaneously the inquiry of receiving management/dispatching center.