Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-10-30
1987-05-05
Buczinski, Stephen C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250237G, G01D 534
Patent
active
H00002771
ABSTRACT:
Apparatus for measuring the direction, extent and rate of linear displacet of a body (e.g. a steel bulkhead) subjected to a harsh environment such as shock from an explosive force. A housing containing an extendable piston is connected between the movable body and a fixed structure. The piston has a surface marked with alternating high and low light reflecting bands which pass under a pair of light emitting optical fibers fixed on the housing. Light reflected from the bands is detected and converted into corresponding out of phase electrical signals for measuring direction, extent and rate of linear displacement of the piston.
Davis Patrick
Lee Steven
Smith Paul
Buczinski Stephen C.
The United States of America as represented by the Secretary of
Walden Kenneth E.
Wallace Linda J.
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