Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-08-29
1988-08-23
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250237G, 250231SE, 356 1, 356 4, 356 28, G01N 2186, G01V 904, G01C 300
Patent
active
047663235
ABSTRACT:
The present invention provides a method and apparatus to determine the position, velocity and orientation of an object with respect to an observation point. It consists of placing a sensor spaced from the object and placed at the observation point which will emit two non-parallel beams of light toward the object. Retroreflectors on the object will reflect the light in opposite direction to generate pulses of reflected light caused by the angular relative motion between the incident beam of light and the retroreflectors. A processor can be used to provide an indication of the position, velocity and orientation of the object based on the time interval between reflected pulses.
REFERENCES:
patent: 3023317 (1962-02-01), Willits et al.
patent: 3180205 (1965-04-01), Heppe et al.
patent: 4329047 (1982-05-01), Kikuchi et al.
patent: 4652121 (1987-03-01), Ito et al.
Frank Gordon I.
Franklin Douglas E.
Palylyk Richard A.
Toom Paul O.
B. C. Hydro
Messinger Michael
Nelms David C.
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