Displacement measurement device and method

Details Displacement measurement device and method Displacement measurement device and method

1981-06-25

1983-07-19

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

250302, 2504611, 33127, 173 21, 356387, G01J 142

Patent

active

043945775

ABSTRACT:
At least two types of reflective or emissive materials are applied in alternating manner to a pile or other object to be moved. Ultraviolet energy is emitted toward the materials and reflections or emissions therefrom are received by appropriate detector elements which convert the different respective reflected or emitted energy spectra into corresponding electrical signals for use by a processor device to determine the distance and rate which the pile or object is being moved. The calculated information is channeled to a suitable display and a permanent recording device.

REFERENCES:
patent: 2580299 (1951-12-01), Hunicke
patent: 2989690 (1961-06-01), Cook
patent: 3498388 (1970-03-01), Jovis
patent: 3838428 (1974-09-01), Benson et al.
patent: 3839637 (1974-10-01), Willis
patent: 4309609 (1982-01-01), Sampson

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