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International Conference on Advanced Computer Theory and Engineering (ICACTE 2009)

Xie Yi
Xie Yi
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ASME Press
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A device that composed of two circuits include ultrasonic sensor and touch sensor, can be installed in some machines to protect human body from hurting. was proposed in this paper. The device has two ways to identify human body. One is to detect the near human body by ultrasonic sensor, the other one is to detect the touched human body by touch sensor. The device has double protection function with the two different ways. When the device finds that there is human body nearby or touched, a signal will be sent to control the relay connected between input power and...

Key Words
1. Introduction
2. Design of Safety Device System
3. Ultrasonic Sensor Module
4. Touch Sensor Module
5. Experimental Results
6 Conclusions
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