Optical accelerometer

Details Optical accelerometer Optical accelerometer

1983-11-18

1986-06-03

Levy, Stewart J.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

73431, 73493, 250231R, G01P 102, G01P 1508

Patent

active

045922357

ABSTRACT:
An LED (18) is spaced from and directed toward a photosensitive member such as a photoresistor (16). A shutter plate (38) positioned between the photoresistor (16) and the LED (18) varies the amount of light received by the photoresistor from the LED. The shutter plate (38) is connected to one end of a cantilever beam (20) which deflects in response to acceleration forces. The shutter plate (38) variably interferes with the amount of light the photoresistor (16) receives as the cantilever beam (20) deflects. The photoresistor (16) has a plurality of photosensitive grid lines (58) which change the resistance of the photoresistor in proportion to the number of grid lines which receive light from the LED (18). The photoresistor (16), LED (18), and cantilever beam (20) are connected to electrically conductive mounting pins (14) which are inserted in a base member (12) and extend downwardly therethrough.

REFERENCES:
patent: 2343063 (1944-02-01), Kent
patent: 3789674 (1974-02-01), Anderson et al.
patent: 3798454 (1974-03-01), Weiss
patent: 3949219 (1976-04-01), Crouse
patent: 4047045 (1977-09-01), Paxton et al.
patent: 4239963 (1980-12-01), August et al.

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