Electricity: measuring and testing – Magnetic – Displacement
Patent
1979-08-28
1982-02-09
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
365 9, 365 29, 365 32, G01B 714, G11C 1908
Patent
active
043152147
ABSTRACT:
Disclosed is a displacement sensor, comprising a pair of plates of magnetic bubble material disposed parallelly to each other across a space and a galvanomagnetic element disposed within the magnetic field formed in the aforementioned space and adapted to be allowed to move parallelly to the inner surfaces of the aforementioned pair of plates. The sensor thus constructed detects displacement or vibration with the galvanomagnetic element retained in a non-contact relation with the pair of plates on the principle that the output signal from the galvanomagnetic element varies in proportion to the amount of movement of this element in the space in response to displacement or vibration.
REFERENCES:
patent: 3806899 (1974-04-01), Myer
patent: 3893059 (1975-07-01), Nowak
patent: 4119911 (1978-10-01), Johnson, Jr.
Sugiyama et al., "Direct Measurement . . . with a Micro Hall Element", Proceedings of the IEEE, vol. 64, No. 11, Nov. 1976, pp. 1643-1644.
Kataoka et al., "New Galvanomagnetic Device with Directional Sensitivity" Proceedings of the IEEE, vol. 59, No. 9, Sep. 1971, pp. 1349.
Agency of Industrial Science & Technology Ministry of Internatio
Snow Walter E.
Strecker Gerard R.
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