CN201114017Y

CN201114017Y - GPS wireless receiving equipment based on ZigBee communication

Info

Publication number: CN201114017Y
Application number: CNU2007201847148U
Authority: CN
Inventors: 高明煜; 曾毓; 何志伟; 黄继业; 刘伟
Original assignee: Hangzhou Electronic Science and Technology University
Current assignee: Hangzhou Dianzi University; Hangzhou Electronic Science and Technology University
Priority date: 2007-10-19
Filing date: 2007-10-19
Publication date: 2008-09-10
Anticipated expiration: 2017-10-19

Abstract

The utility model relates to a GPS wireless receiving device. GPS antennas of the prior GPS omniselector are generally built inside, thereby the activity range is generally limited. The utility model comprises a GPS receiving antenna and a GPS receiving module which are connected through a signal, wherein, a singlechip is respectively connected with the GPS receiving module and a ZigBee wireless transceiver circuit which is connected with a printing antenna; and a power management circuit is respectively connected with the GPS receiving module, the singlechip, the ZigBee wireless transceiver circuit and a lithium battery through wires. The GPS wireless receiving device can be independently and flexibly arranged, obtains the strongest GPS satellite signals, and is separated from a main system of the GPC omniselector; moreover, bidirectional wireless data communication is performed through ZigBee means, thereby the omniselector can be operated and used at any place in a vehicle and does not be limited by position again.

Description

A kind of GPS radio receiver based on ZigBee communication

Technical field

The utility model relates to a kind of GPS radio receiver, is mainly used in the car borne GPS navigation device.

Background technology

Along with rapid development of economy in recent years, the popularity rate of vehicle is also more and more higher, it has brought many convenience to people's life, but some new puzzlements have also been brought simultaneously: in the transportation network of complexity and place that traffic congestion frequently takes place, how to select suitable traffic route, in strange geographical environment, how driver and crew understand the traffic of periphery and accurately find own current location.And the dependence satellite positioning tech, an above-mentioned difficult problem can be alleviated or solve to the car borne GPS navigation device preferably, and therefore GPS navigation device development in recent years is very swift and violent, and American-European developed country is more universal, become a standard configuration in Japan, and start to walk also in the market of domestic car borne GPS navigation device.

Its gps antenna of GPS navigation device that uses is all generally built-in at present, like this when the GPS navigation device uses onboard, can't use owing to can not receive gps satellite signal when the occupant operates omniselector on the back row seats, must be by occupant's operation on the dress circle, and preferably be placed under the preceding windshield, its built-in gps antenna is parallel all the time facing to sky, obtaining the strongest GPS framing signal, so omniselector when in car, using its scope of activities generally be restricted.

Summary of the invention

In order to overcome the problem that existing GPS navigation device exists, the utility model proposes a kind of GPS wireless receiving module based on ZigBee communication, that is to say that this GPS wireless receiving module separates with the omniselector main system, carries out radio communication by the ZigBee mode.

The utility model solves the technical scheme that is adopted: a kind of GPS radio receiver based on ZigBee communication comprises GPS reception antenna and the GPS receiver module that signal connects, single-chip microcomputer is connected with the ZigBee wireless transceiver circuit with the GPS receiver module respectively, and the ZigBee wireless transceiver circuit is connected with printed antenna.Electric power management circuit respectively with GPS receiver module, single-chip microcomputer, ZigBee wireless transceiver circuit and lithium battery wired connection.

Each circuit and single-chip microcomputer all adopt ripe prior art in the utility model.Select the ATMega48 of atmel corp for use as single-chip microcomputer, the ZigBee wireless transceiver circuit adopts the MC13191 chip of Freescale company, and electric power management circuit adopts the A1117 integrated circuit.GPS reception antenna and GPS receiver module adopt the existing apparatus of the GPS navigation device that uses at present.

This device is powered to GPS receiver module, single-chip microcomputer and ZigBee wireless transceiver circuit by electric power management circuit by lithium battery.This GPS radio receiver separates with the omniselector main system, and between the two without any connecting line, they carry out the double-direction radio data communication by the ZigBee mode.

In order to prolong the power-on time of lithium battery to greatest extent, must consider the oneself power consumption of device, for this reason by low-power scm control and management GPS receiver module and ZigBee wireless transceiver circuit, when the omniselector main system is worked, this GPS receiver module is just opened, otherwise be in off state, both synchronous workings; In addition at off state, have only ZigBee receiving circuit and low-power scm in running order, this moment, the operating frequency of single-chip microcomputer was set to minimumly, and the power consumption of whole GPS radio receiver is also just minimum, is whole device power-on time thereby prolonged lithium battery.

Compared with prior art, the utlity model has following remarkable advantage:

(1) this GPS receiving system can be installed in before the automobile top, automobile below the windshield separately or diverse location such as below the windshield behind the automobile neatly, thereby obtains the strongest gps satellite signal.

(2) this GPS receiving system separates with GPS navigation device main system, and between the two without any connecting line, they carry out the double-direction radio data communication by the ZigBee mode, so can be in the car arbitrary position operation of omniselector uses, and no longer is subjected to position limit.

Description of drawings

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is a GPS radio receiving transmitting module interface microcontroller allocation plan.

Embodiment

Below in conjunction with accompanying drawing and example the utility model is further specified.

As Fig. 1, the utility model comprises GPS reception antenna 1 and the GPS receiver module 2 that signal connects, and single-chip microcomputer 3 is connected with ZigBee wireless transceiver circuit 4 with GPS receiver module 2 respectively, and ZigBee wireless transceiver circuit 4 is connected with printed antenna 5.Electric power management circuit 6 respectively with GPS receiver module 2, single-chip microcomputer 3, ZigBee wireless transceiver circuit 4 and lithium battery 7 wired connections.

As Fig. 2, core of the present utility model is a ZigBee wireless transceiver circuit 4, the MC13191 that selects Freescale company for use is as the ZigBee transceiving chip, its transmitting-receiving operating frequency is 2.4GHZ, and single-chip microcomputer 3 is selected the ATMega48 of atmel corp for use, and the above-mentioned SPI that adopts between the two communicates by letter, and respectively the PB1-PB5 mouth of single-chip microcomputer is connected to the VCONT of ZigBee chip, CEB, MISO, MOSI, the SPICLK pin, the VCONT end is for the receipts of ZigBee transmission circuit or send out the selection control pin, high level is a transmit status, low level is an accepting state, and CEB, MISO, MOSI, these four pins of SPICLK are used for SPI communication.When the ZigBee received signal, printed antenna 5 is delivered to signal the radio-frequency (RF) signal input end of ZigBee chip at last by RC network, transmitting-receiving conversion electron switch and impedance matching high frequency ferrite transformer, and then delivers to single-chip microcomputer 4 by the SPI interface; When sending the ZigBee signal, single-chip microcomputer is delivered to the ZigBee chip to signal by the SPI mouth, then the radiofrequency signal output by the ZigBee chip, impedance matching high frequency ferrite transformer, transmitting-receiving conversion electron switch, RC network, at last by printed antenna emission output.

GPS receiver module 2 is selected the ZYM GA61-3 of the electric production in Zhengyuan, Zhejiang for use, its core is that the third generation GPS that U.S. SIRF company produces receives decoding chip, adopt the UART serial communication between GPS module and the single-chip microcomputer, data communication rates is selected 19.6Kb/S, the PD0-PD1 mouth of single-chip microcomputer is connected to TXA, the RXA end of GPS module respectively, in order to prolong the lithium battery operating time to greatest extent, PB0 end control metal-oxide-semiconductor work by single-chip microcomputer, when car borne GPS navigation device main system is worked, the metal-oxide-semiconductor conducting, this moment, the GPS module got electric work; When car borne GPS navigation device main system was not worked, metal-oxide-semiconductor turn-offed, and this moment, the GPS module did not have to power and can't work, and whole GPS wireless receiving module is least in power-consuming at this moment.

3.6V lithium battery is by after electric power management circuit 6 voltage stabilizings, it is output as whole wireless transmitter power supply such as ZigBee transmission circuit 4, single-chip microcomputer 3, GPS receiver module 2.

Claims

1, a kind of GPS radio receiver based on ZigBee communication, comprise GPS reception antenna and GPS receiver module that signal connects, it is characterized in that single-chip microcomputer is connected with the ZigBee wireless transceiver circuit with the GPS receiver module respectively, the ZigBee wireless transceiver circuit is connected with printed antenna; Electric power management circuit respectively with GPS receiver module, single-chip microcomputer, ZigBee wireless transceiver circuit and lithium battery wired connection.