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Short message transceiver having wireless locating function

A wireless positioning and transceiver technology, applied in the field of GPS wireless positioning and SMS sending, can solve the problems of difficult maintenance, inability to guarantee accuracy, poor versatility, etc., and achieve the effects of high positioning accuracy, good versatility and easy maintenance.

Inactive Publication Date: 2007-10-24
EAST CHINA NORMAL UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

The above-mentioned mobile phones with positioning function need to process data through the service center. The main disadvantage is that it needs to be relayed, which is not fast and convenient enough, and cannot guarantee high accuracy. The most important thing is that when the SMS communication link is delayed Or in the case of congestion, the positioning function of this type of mobile phone can only be used in name only, and cannot meet the requirements of some users who have higher requirements for accuracy; in addition, the microprocessors of the mobile phones with the positioning function above all use special integrated circuit, poor versatility and difficult maintenance

Method used

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Embodiment

[0017] Single chip microcomputer 6, GSM wireless communication module 2, GPS receiving module 1, RS232 level conversion module 4, LCD Chinese display module 5 and serial port expansion module 3, FLASH module models are P89C51RD2BN, TC35, Fortuna-U2, MAX232CPE, HZ128- 64D10, SP2338SO-C and AT24C02A, any four I / O ports in P2 port of MCU 6 are respectively connected to ADR00, ADR01, ADRI1 and ADRI1 of serial expansion module 3, and RXD and TXD of MCU 6 are respectively connected to RX3 of serial expansion module 3 Connect with TX3, TX1, RX1, TX2, RX2 of the serial port expansion module 3 are respectively connected with TXD1, RXD1, TXD2, RXD2 of the RS232 level conversion module 4, and the crystal oscillator 30 is bridged between OSCI and OSCO of the serial port expansion module 3, The first capacitor 31 and the second capacitor 32 are connected in series between OSCI and OSCO of the serial port expansion module 3, the connection point of the first capacitor 31 and the second capac...

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Abstract

A short message T-R device with radial positioning function applying general IC includes a single-chip unit, a FLASH module, a keyboard, LED indicating lamp, a LCD Chinese words display module, a GPS receiving module, a GSM radial communication module, a RS232 level conversion module, a serial expanding module, among which, the FLASH module, keyboard and LED indicating lamp are connected with the single-chip unit via data line, address line and the control line, the LCD module and the GPS receiving module, GSM and RS232 level conversion module are connected with the single-chip unit via the serial expanding module, data line, address line and the control line.

Description

technical field [0001] The invention relates to a short message transceiver with a wireless positioning function, to be precise, relates to a short message transceiver with a GPS wireless positioning function, and belongs to the technical field of GPS wireless positioning and short message sending. Background technique [0002] In an unfamiliar environment, such as a big city or in the wild, people face the difficult problem of finding their way. At this time, people urgently need the correct information to know where they are. At present, mobile phones with positioning functions that can be purchased on the market cannot perform independent positioning by themselves. They mainly use "server-assisted" positioning methods, using base stations and their servers for wireless positioning calculations. The main positioning methods include: 1. Field strength positioning method. The signal strength received by the mobile phone is inversely proportional to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/38G01S1/02G01S5/02H04M1/00H04B1/40
Inventor 刘锦高王婍犇李外云杨雯静童晓慧袁渊徐敏
Owner EAST CHINA NORMAL UNIV
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