傳統的定位裝置應用于GPS或者手機信號能覆蓋到的區域，而在一些偏遠地區則無法保證。該系統是采用富士通MB95F204K單片機和ZCC212N-232電子羅盤設計的不依賴于GPS定位裝置，而是以光電對管傳感器作為走路信號的采集模塊，電子羅盤采用RS-232串行通信協議與單片機進行通信，并實時發送絕對角度數據至單片機，單片機通過三角正余弦的泰勒級數展開公式計算出坐標增量，在屏幕上畫出行走軌跡。該定位裝置在實際應用中功耗低，便攜，可移植性高，具有很高的定位精度。

Abstract:

?Traditional positioning device， which can not work in remote area， only works under the premise that GPS or mobile phone signal can cover. In this paper， a positioning device which is independent of GPS based on Fujitsu MB95F204K SCM and ZCC212N-232 electronic compass is designed. In this system， reflective optical sensor is used to collect walking signals. Electronic compass communicates with SCM in the way of RS-232 and sends real time absolute angle to SCM. SCM calculates the increment of coordinate through the expansion formula of trigonometric function， then we can draw the track on screen. The practical application of the positioning device shows that this positioning device is low-powe-consumption， portable， plantable and has high precision.