| With the economic and social development, all kinds of vehicles have been used bythousands of families, which brings vehicle safety problem that has become the focus ofattention. Development of a low-cost system having position tracking function playsimportant application value for the vehicle anti-theft.In this thesis, in order to achieving a low-cost vehicle position tracking system, byfully understanding of the GPS vehicle positioning technology and GSM mobilecommunication technology, the system hardware and software using the single-chipmicrocomputer as core processor are designed, and a comprehensive vehicle anti-theftsystem with position, alarm and tracking functional is realized.Firstly, the principle of GPS and GSM technology is introduced in this paper.Secondly, the system hardware is designed using STC12C5A60S2type single-chipmicrocomputer as processor, Switzerland u-blox company LEA-5S module as GPS moduleand Huawei company GTM900-B as GSM module. The serial interface2receiving GPSmodule output NMEA0183statement information, and the data is displayed to the liquidcrystal display module by parallel interface. The reception and transmission of shortmessage is achieved by serial interface1and GSM communication modules, and each partof the hardware circuit is designed. Then the system software is designed, including themain program, serial ports register setting, GPS data analysis, GPS positioning informationdisplay, GSM short message sending and receiving, and GPS position data acquisition,transmission, coding, AT commands and the frame format of sending a short message bythe PDU format data are also introduced in detail. Finally, with repeated experiments forthe designed system, the experimental results show that the system realizes the GPSpositioning information real-time receiving and display, owners’ sending the positioninginformation to preset phone number by triggering the key in case of an emergency, andshort message control vehicle position tracking function. |
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