摘 要 本論文為考慮肢障者的特殊需求，建構一套腳趾彎曲角度感測裝置，讓殘障者能藉由腳趾的彎曲變化來控制手部義肢，使他們能夠自己處理部分生活，減少家庭或社會的負擔，進而提昇肢障者能夠自行獨立生活的能力。 本感測裝置的製作是在各個腳趾上放置自製彎曲感測器。彎曲感測器由紅外線發射 LED、矽膠軟管及紅外線接收 LED 所組成，根據腳趾彎曲程度的不同，可以產生不同的光通量變化。我們利用彎曲感測器來擷取受測者腳趾彎曲所產生之光通量信號變化，並透過訊號轉換模組將光訊號轉換為電壓訊號變化，再用以 MCS-51 為核心的控制電路將類比訊號變化轉換成數位信號變化，使用無線發射單元把資料傳送到無線接收端，透過 RS-232 將資料傳輸至個人電腦，最後利用迴歸分析取得電壓與角度之關係方程式，來判斷受測者腳趾的彎曲角度變化。 ABSTRACT In this paper, we consider the special demand for the person who hinders limb, construct a toe bending angles detecting device. The disability person can control the hand prosthesis with the bended change of the toe, to deal with daily life and the ability to promote independent life. The detecting device is mounted with a bending sensor at each toe, and the bending sensor consists of IRED (Infrared Radiation Emitting Diode), silicone tubing and phototransistor. With different degrees of toe bending, it responses with luminous flux density variation and produces different signal values. A signal transformation module is used to transform the luminous signal into a voltage signal value. Transmitting this signal to Control circuit taking MCS-51 as the core, the analog signal of the toe bending is converted to a digital signal. The signal uses wireless transmit unit to convey to receive device, and we apply the standard RS-232 communication interface to acquire the data from the receive device. The data were sent to a personal computer for real-time showing on VB windows. Then, we utilize regression analyze to obtain the relation equation preface of the voltage and angle. And then make the relation equation preface determine the crooked angle change of the toes of disability person.
