Marine compass rate-of-turn indicator

Details Marine compass rate-of-turn indicator Marine compass rate-of-turn indicator

1988-07-01

1990-05-29

Orsino, Joseph A.

Communications: electrical

Watercraft alarm or indicating systems

73178R, 73504, 74 56E, G08B 2300

Patent

active

049299433

ABSTRACT:
An array of light emitting diodes in a circular arrangment are illuminated to indicate the discrete magnitude of rate-of-turn and the direction of turn. The number of diodes illuminated is indicative of the discrete magnitude of turn and the clockwise or counterclockwise direction of illumination of the diodes is indicative of the turn direction. The current and preceding samples of the gray coded step data compass heading output are compared to detect incremental changes in heading. The incremental changes are counted over a predetermined time interval to provide a count signal representative of turn rate. Logic responsive to the count signal illuminates the appropriate number of light emitting diodes. Further logic responsive to the gray code heading data sequence provides a direction of turn signal to illuminate the light emitting diode in a clockwise or counterclockwise direction.

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patent: 4420741 (1983-12-01), West
patent: 4663627 (1987-05-01), Dennis
patent: 4682171 (1987-07-01), Nakamura

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