Design Of Vehicle Positioning And Anti-theft System Based On GSM

In China, a lot of cars are equipped with anti-theft devices, but for cost reasons,mostly electronic anti-theft system, generally there was a loophole: a warning distance is short, 2 it is single function. How to develop an efficient security devices became a important subject. In this paper, the GPS positioning technology, GPRS wireless network technology and sensor technology mutual confluence, design a network real-time positioning anti-theft system.This article first discusses the research background and meaning, the development history of car alarm and development present situation, and on this basis, summarized in this paper, the research of automobile anti-theft alarm system design idea, structure scheme.Then system overall scheme design, hardware selection and the hardware circuit design of each module in this article chooses STC12C5A60S2 single-chip microcomputer as the master control chip, the design of the single chip microcomputer minimum system circuit,GPS positioning module circuit, GSM communication module circuit, display circuit,power circuit and sensor detection circuit, complete system hardware circuit design.On the software part of the automobile anti-theft alarm system design. Description of development environment needed for the software design is the first, and introduced the NMEA - 1083 statements and the AT command format and using method. Introduced the burglar alarm system software flow chart, realize the car alarm, real-time positioning and alarm function. Using VB language to complete the monitoring center is designed, using the Winsock control, make the client and the server connection is established, the implementation of real-time display and data acquisition system of simple control functions.This design rely on the wireless transmission technology and sensor technology,effectively made up for alarm distance short, poor accuracy, low reliability, single function and so on. With lower configuration to realize the function of vehicle positioning and guard against theft, the design of circuit is simple, cost-effective, high precision, function more, has a certain practicality.