Direction detection apparatus

Details Direction detection apparatus Direction detection apparatus

1981-11-12

1984-02-07

Haroian, Harry N.

Geometrical instruments

Indicator of direction of force traversing natural media

Magnetic field responsive

33356, G01C 1728

Patent

active

044294697

ABSTRACT:
A direction detection apparatus comprising a magnetic sensor which senses a geomagnetic azimuth, a turning-angle sensor which senses a turning angle dynamically, a magnetic-disturbance detector which detects a magnetic disturbance on the basis of the output of the magnetic sensor, and a signal switching device which transmits either the magnetic sensor output or the turning-angle sensor output to a display device in accordance with a signal from the magnetic-disturbance detector. The traveling direction of a moving object can be detected as a precise geographic azimuth even when the moving object lies in a place subject to the magnetic disturbance.

REFERENCES:
patent: 2853795 (1958-09-01), Hurlburt et al.
patent: 4300390 (1981-11-01), Shimizu
patent: 4327498 (1982-05-01), Setter et al.

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