Position encoder

Details Position encoder Position encoder

1974-03-25

1976-04-27

Morrison, Malcolm A.

Communications: electrical

Audible indication

Percussion-type sound producer

73384, 244180, 340347P, H03K 1318

Patent

active

039538478

ABSTRACT:
A pressure altitude signal actuates a servomotor coupled through a gear train to an altimeter that includes a rotational shaft for repositioning an aneroid pickoff. Mounted on the rotational shaft is an encoding disc with seven code formations supported on one face of the disc. Each code formation has a generally circular configuration with the various formations juxtapositioned. Six brush pickoffs respond to the six outermost code formations to provide pulse trains related to altitude pressure. A seventh brush pickoff provides a reference code to encoder logic that generates three additional pulse trains related to altitude pressure. The pulse trains of the outer six code formations and the pulse trains from the encoder logic uniquely identify by means of a code bit pattern an altitude.

REFERENCES:
patent: 2318591 (1943-05-01), Couffignal
patent: 2793807 (1957-05-01), Yaeger
patent: 3007637 (1961-11-01), Meirowitz
patent: 3245255 (1966-04-01), Parsons
patent: 3543152 (1970-11-01), Niedereder
patent: 3626748 (1971-12-01), Springer
patent: 3693405 (1972-09-01), Shimomura

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