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Research of On-Vehicle Location System Based on GPS and SMS of GSM

Author: LiuZuoJuan
Tutor: ZouJian
School: Chongqing University
Course: Optical Engineering
Keywords: Vehicle positioning system GPS acquisition TC35i module
CLC: TP274
Type: Master's thesis
Year: 2008
Downloads: 504
Quote: 5
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Abstract


Positioning system has been widely related to multiple industries. Many positioning systems are carried by the carrier itself localization algorithm to determine the location, the complexity of the positioning mode, and collect positioning data generally need to have personnel involved in the operation of the carrier side. Establishment of GPS users worldwide to provide an inexpensive and practical means of positioning. The GPS receiver can continuously provide a carrier device for real time positioning data. The use of GSM short message service (SMS) to transfer the data of the GPS positioning of the small flow, so that the remote sensing positioning technology can be achieved. The design is based on vehicle positioning system GPS and GSM short message. Mainly to solve the positioning needs of the owner of the vehicle. Design is divided into two parts: vehicle locating and monitoring processing side. Vehicle positioning terminal to complete the main function is to receive and GSM module GPS valid data receiving and sending of short message. End of the main function of monitoring processing is completed geopositioning short message transmission request and receiving a short message containing the GPS information and location parameters required for decoding. Hardware, GSM module Siemens TC35i module. The two parts are used MCU AT89S52 serial communication to control the GPS receiver module and TC35i module. Hardware design focuses on the car side, the microcontroller to control two modules, AT89S52 only one pair of serial port, taking into account the end-use of the design of the GPS positioning data collection is the demand side should, and positioning does not require high accuracy of real-time information, serial communication using analog switches switch AT89S52 serial port connectivity, completed the TC35i and GPS receiver module with microcontroller interface circuit. Also completed the the TC35i module IGT start circuit, SIM card circuit, voltage regulator power supply circuit. The monitoring client hardware does not need GPS receiver module, but requires MCU and PC serial interface circuit. Software design using C51 programming, use AT commands to read and write operation TC35i short message transceiver. GPS data acquisition process is: car end of the first GPS signal reception, and then determine its effectiveness. Obtain useful GPS data is stored and sent to the monitoring client. Monitoring client to extract the contents of the short message and decode GPS data in the received GPS data Message returned. This system has finished for the the take given function of the position of the vehicle. The car side of the positioning system applied to the other carrier, will form a variety of other purposes, such as the body's location tracking, mobile phone positioning, anti-theft of valuables. If the received GPS data is replaced with other content, can be used as the other monitoring devices, very suitable for instance sinister region of temperature and humidity detection. On the basis of the design only need to increase the speed of the GPS data acquisition, coupled with a GPS navigation system map composition. Its use is broader.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
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