基于電子羅盤的便攜式定位裝置

傳統(tǒng)的定位裝置應(yīng)用于GPS或者手機(jī)信號(hào)能覆蓋到的區(qū)域，而在一些偏遠(yuǎn)地區(qū)則無法保證。該系統(tǒng)是采用富士通MB95F204K單片機(jī)和ZCC212N-232電子羅盤設(shè)計(jì)的不依賴于GPS定位裝置，而是以光電對(duì)管傳感器作為走路信號(hào)的采集模塊，電子羅盤采用RS-232串行通信協(xié)議與單片機(jī)進(jìn)行通信，并實(shí)時(shí)發(fā)送絕對(duì)角度數(shù)據(jù)至單片機(jī)，單片機(jī)通過三角正余弦的泰勒級(jí)數(shù)展開公式計(jì)算出坐標(biāo)增量，在屏幕上畫出行走軌跡。該定位裝置在實(shí)際應(yīng)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.