Pulsed operation of optical rotary encoder for low-power applica

Details Pulsed operation of optical rotary encoder for low-power applica Pulsed operation of optical rotary encoder for low-power applica

1994-09-26

1996-07-30

Epps, Georgia Y.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023118, G01D 534

Patent

active

055414060

ABSTRACT:
The pulsed optical rotary encoder digitally samples the operation of the optical rotary encoder to obtain the same information that is obtained by the use of the continuously active light-emitting devices but in a much more energy-efficient manner. In particular, the light-emitting devices are pulsed into operation for a short duration and at a frequent rate. The signals produced by the light detectors associated with the light-emitting devices are sampled at a predetermined time after firing the light-emitting devices to obtain the data necessary to determine the rotation of the coding disk.

REFERENCES:
patent: 3096444 (1958-04-01), Seward
patent: 3576441 (1971-04-01), Adams
patent: 4033883 (1977-07-01), Zinsmeyer et al.
patent: 4078485 (1986-03-01), Guthrie
patent: 4631940 (1986-12-01), Krivec et al.
patent: 4634859 (1987-01-01), Martell
patent: 5070238 (1991-12-01), Ishihara et al.

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