Design And Research Of The Gps Terminal Based On Of Freescale The Aw Series Of Microcontrollers

With the rapid development of the computer and positioning technology, a great number of manufactures develop their products for mobile positioning. All of these give us more convenience during travel and improve the traffic management. This paper proposed a mobile positioning system made for low—end users. This system features in low cost and high stability.This system consists of mobile positioning terminal and monitor center all of which includes software and hardware implementations. This paper mainly presents the system structure; hardware products selection; GPS receiver peripheral.circuit and main controller module circuit design; data acquisition software design and implementation.This system is based on GPS technique, which can offer round—the—clock positioning function; MC9S08AW60 processor is used in main controller module, so that the main processor can respond to the GPS module and GSM module simultaneously; the communication manner between mobile terminal and monitor center is SMS messages.This system is suitable for low—end users because the cost was carefully considered when we were selecting hardware products and technique. And its function can be expanded easily by software update.