Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
1999-09-22
2001-06-26
Wu, Daniel J. (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S565000, C340S545300, C250S338300
Reexamination Certificate
active
06252506
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for finding position of a human, which can detect the approach of a human, and find the direction and distance of that human.
Many scientists and inventors have made a lot of new machines, tool and devices with which we can lead a convenient and comfortable life. A device which can find position of a human body can be used in many ways, e.g. for finding position of a performer on the stage and then automatically adjusting the position or direction of the spotlight with movement of the performer with this purpose and others, the inventor of the present invention invented a device for finding position of a human body.
SUMMARY
The present invention relates to a device for finding position of a human, which can detect the approach of a human, and find the direction and distance of that human.
The device for finding position of a human of the present invention comprises:
(a) a micro controller having input and output ports;
(b) a pyro-electrical infrared sensing unit electrically connected to the micro controller;
(c) a first motor connected to the micro controller, the motor having a shaft connected to a first disc for permitting the disc to rotate with the shaft; the infrared sensing unit being fitted to the disc of the first motor such that the infrared sensing unit can make circular movement;
(d) a rotating speed feed back unit electrically connected to the micro controller, the feed back unit consisting of:
(i) a rotating disc connected to the first motor shaft, the rotating disc having a plurality of through holes circularly spaced apart thereon;
(ii) a photo-coupling unit including a transmitter and a receiver; the transmitter and the receiver being arranged at two sides of the rotating disc, opposing each other, directing a circle defined by the through holes for permitting the receiver to regularly receive messages from the transmitter while the rotating disc is rotating; the micro controller being thus able to figure out direction of the infrared sensing unit when same senses a human;
(e) a distance sensing unit electrically connected to the micro controller, the distance sensing unit being coupled to a disc rotatable with a shaft of a second motor; the second motor turns for permitting the distance sensing unit to direct the human and figures out the distance from that human when the infrared sensing unit finds the human.
The position finding device can be connected to a load such as a spotlight; thus, the spotlight can be adjusted to direct to a performer on the stage once the position finding device has found the performer.
REFERENCES:
patent: 5281818 (1994-01-01), Tomita et al.
patent: 5473368 (1995-12-01), Hart
patent: 5528038 (1996-06-01), Yoshiike et al.
patent: 5877688 (1999-03-01), Morinaka et al.
patent: 5910767 (1999-06-01), Frucht
Chen Kun-Huei
Cheng Chien-Min
Hsieh Yuan-Tai
Hsieh Yuan-Tai
Pham Toan
Rosenberg , Klein & Lee
Wu Daniel J.
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