Patent ID: 6252506
Filing Date: 2001-06-26
Classification: G08B

Abstract:
A device for finding a position of a human comprising:(a) a micro controller, said controller having a plurality of input and output ports;(b) a pyro-electrical infrared sensing unit electrically connected to said micro controller from a corresponding one of said ports;(c) a first motor electrically connected to said controller, said first motor having a first disc connected to a shaft thereof, said first disc being capable of rotating together with said shaft, said infrared sensing unit being fitted to said disc of said first motor for permitting same to move circularly with said first motor shaft;(d) a rotating speed feed back unit electrically connected to said micro controller;(e) a distance sensing unit electrically connected to said controller, including,(i) a ultrasonic sensing unit;(ii) a second motor having a shaft, and a second disc coupled to said second motor shaft; said ultrasonic sensing unit being fitting to said second disc for permitting same to move together with said second motor disc, whereby said micro controller can figure out a direction of a human by means of said rotating speed feed back unit once said infrared sensing unit finds that human, and said ultrasonic sensing unit can be directed to said human to find a distance from said human.