Displacement sensor including a piezoelectric element and a magn

Details Displacement sensor including a piezoelectric element and a magn Displacement sensor including a piezoelectric element and a magn

1989-02-08

1990-05-01

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Displacement

324166, 324262, 32420722, 310328, 123616, G01B 730, G01P 348, H01L 4108, F02P 1700

Patent

active

049221981

ABSTRACT:
In the embodiments described in the specification, a device having gear teeth to provide magnetic asymmetries rotates adjacent to a permanent magnet which is part of a mechanical mounting for a piezoelectric transducer. Relative motion between the gear teeth and the magnet subjects the transducer to a varying mechanical stress so that it generates a pulsed output voltage signal having an amplitude which is independent of surrounding influences.

REFERENCES:
patent: 4677378 (1987-06-01), Tokura et al.

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