雙軸旋轉感測系統之研製

Abstract

本論文設計一種藉著地磁與重力，用光感測旋轉角位移量的雙軸旋 轉感測器。基本上，水平方位的偏移量是藉著羅盤以光垂直投射的方式 ，用一組光感電晶體來量測。而縱向俯仰的變化量則是借用一種永遠指 向地心的鉛垂式扇形齒輪，亦是用光感測的方式來量俯仰的方向與角位 移量。 這樣的感測器可用在虛擬實境的姿態量測上。也可作為雙軸轉動平 台的 操控器。系統的完成是以PC個人電腦作為感測與致動的溝通媒介。 文中 將對此一系統從硬體實作、訊號擷取，到PC個人電腦的界面卡製作 ，以 及軟體規化作深入的探討。 A double axes rotational sensor utilizing terrestrial magnetism , gravitation and photo-coupler to measure anguler orientation is presented in this thesis . Essentially , the horizontal sensor uses compass to obtain the angular variation of the system . The signal of this variation is measured by using a set of photo-coupler via the projection of the laser diode from a horizontal gear train . While the vertical sensor uses a vertical sectorial gearwheel that always point to ground , a pair of photo-couplers are used to detect the direction and magnitude that the wheel orientates . The developed sensor can be used as a tracking device in virtual reality . In the present development , a double axes rotational plane that is controlled by the sensor has been built . The hardware implementation from the sensor to PC interface and from PC interface to actuator will also be described .