Rotational acceleration detector with microdot coding

Details Rotational acceleration detector with microdot coding Rotational acceleration detector with microdot coding

1987-11-23

1989-02-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

048088170

ABSTRACT:
A system for detecting angular, radial and axial accelerations of rotating machinery parts to facilitate vibrational analysis of the parts. An annular array of micro dots is disposed on the rotating machinery part generally concentric with the axis of rotation of the part. A stationary high resolution photodetector is located for reading the micro dot patterns of movement of the annular array of dots as the array tangentially passes the photodetector. A conditioning circuit is coupled to the detector for conditioning a signal received from the detector.

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patent: 4644545 (1987-02-01), Gershenson

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