Digital solid state compass

Details Digital solid state compass Digital solid state compass

1974-08-05

1976-04-27

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

G01C 1728

Patent

active

039524205

ABSTRACT:
A timing circuit receives substantially square wave clock signals and generates Sine and Cosine driving signals therefrom at a predetermined frequency for application to first and second mutually perpendicular Hall effect generators. The output signals from the Hall effect generators are algebraically summed to provide a heading signal, the phase displacement of which with respect to the driving signals, is representative of the orientation angle between one of the Hall effect generators and magnetic north. A counter is synchronized to begin to count clock pulses at the beginning of each period of the driving signals. A logic circuit is effective to disable the counter when the count therein is representative of the orientation angle. The count is stored in a memory and displayed on a readout device which is, in turn, updated at the end of each period of the driving signals' frequency.

REFERENCES:
patent: 3197880 (1965-08-01), Rice et al.
patent: 3601899 (1971-08-01), Artz
patent: 3634946 (1972-01-01), Star
patent: 3657629 (1972-04-01), Lloyd
patent: 3678593 (1972-07-01), Baker et al.
patent: 3835375 (1974-09-01), Rovner

Affiliated with

Also associated with

Rating

Digital solid state compass does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital solid state compass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital solid state compass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1992881