传统的定位装置应用于GPS或者手机信号能覆盖到的区域，而在一些偏远地区则无法保证。该系统是采用富士通MB95F204K单片机和ZCC212N-232电子罗盘设计的不依赖于GPS定位装置，而是以光电对管传感器作为走路信号的采集模块，电子罗盘采用RS-232串行通信协议与单片机进行通信，并实时发送绝对角度数据至单片机，单片机通过三角正余弦的泰勒级数展开公式计算出坐标增量，在屏幕上画出行走轨迹。该定位装置在实际应用中功耗低，便携，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.
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