Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-11-03
1999-08-17
Nelms, David
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023117, G01D 5347
Patent
active
059397136
ABSTRACT:
The present invention discloses an optical sensing system which utilizes two sensors to detect positioning holes or an identification hole of a grid panel. The optical sensing system comprises a wheeled shaped grid panel, a sensing device and a control circuit. The panel has a grid array installed in it, and the grid array comprises a plurality of positioning holes and an identification hole. The sensing device is used for detecting movements of the grid array in left and right directions. The sensing device comprises a light source located at one side of the panel for emitting light, and two sensors located at another side of the panel for detecting the light emitted from the light source through any hole of the grid array and generating corresponding sensing signals. The control circuit is connected to the two sensors for converting the sensing signals generated by the two sensors into corresponding position signals or displacement signals. The two sensors of the sensing device are arranged in a tilted pattern over which one sensor is positioned above the other in up and down direction and the two sensors are not overlapped in left and right direction. And the shape of the identification hole is made according to the tilted pattern of the two sensors so that when any positioning hole of the grid array passes through the sensing device in left or right direction, the two sensors will sequentially detect the light passed through the positioning hole, and when the identification hole of the grid array passes through the sensing device, the two sensors will detect the light passed through the identification hole in the same time.
REFERENCES:
patent: 4661696 (1987-04-01), Stone
patent: 4965446 (1990-10-01), Vse
patent: 5003170 (1991-03-01), Masuda et al.
patent: 5070726 (1991-12-01), Fukui et al.
patent: 5396063 (1995-03-01), Ito et al.
Lee John R.
Nelms David
Primax Electronics Ltd.
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