Eye-writing Telephone Control System

• Main Authors: Chung-Xian Yu, 余長憲
• Other Authors: Jang-Zern Tsai
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/36108311484891443310

碩士 === 國立中央大學 === 電機工程研究所 === 94 === The eye-writing system is already developed in this laboratory. But the system can only use in computer. The computer is big and heavy. So we can’t carry it easily. We will transplant it to the microprocessor systematically from computer and add the control of telephone in order for ALS (Amyotrophic Lateral Sclerosis) patients to act on their’s own even more in life. My research is to build eye-writing telephone control system. In this study, we measured the eye movements by electro-oculograophy (EOG). The electrical potential difference measured between the skins above and below the eyes reflected the eye movement in the vertical direction. That measured between the skins to the left and to the right of the eyes reflected the eye movement in the horizontal direction. We use the microprocessor to filter out noise and do signal processing. They can be replaced by eye-writing to pick up the telephone, put down the telephone, dial, and speak. We evaluated the eye-writing system with a symbol set consisting of 37 Mandarin phonetic symbols, 5 lexical-tone symbols, 10 Arabic numeral symbols, 3 punctuation marks, and 5 control symbols. Through the test of six persons who are examined, the distinguishing rate can be up to 83.33%. There are there modes in the eye-writing telephone control system. ☆1 is speaking mode and it’s success rate is 83.33%. ☆2 is answering mode and it’s success rate is 66.66%. ☆3 is dialing mode and it’s success rate is 66.66%.