Electricity: measuring and testing – Magnetic – Magnetometers
Patent
1988-05-05
1989-07-18
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Magnetometers
33361, 324247, G01R 3306
Patent
active
048496960
ABSTRACT:
A toroidal or similar body (1) of a non-magnetic, insulating material, preferably glass fibre-reinforced plastic or ceramic is provided with at least three recesses for receiving in each case a corresponding one magnetoresistive sensor. The associated measuring directions of said sensors are orthogonal to one another. For producing a magnetic auxiliary field applied to the sensors, a coil is arranged on the body. for increasing the accuracy and reliability of the measured result, the body is provided with at least one further recess for receiving a further sensor. The measuring direction of the further sensor differs from that of other sensors and forms preferably the same angle with the other measuring directions. The body can be in multipart form and is in particular made from two identical parts.
The apparatus can be used in electronic compasses and for north finding devices.
REFERENCES:
patent: 4539760 (1985-09-01), Marchant et al.
patent: 4661773 (1987-04-01), Kawakita et al.
patent: 4683535 (1987-07-01), de Ridder et al.
patent: 4736072 (1988-08-01), Katoh et al.
Brun Robert
Ramseier Ernst
Mueller Robert W.
Strecker Gerard R.
Wild Heerburgg, AG
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