Tuned vibration detector

Details Tuned vibration detector Tuned vibration detector

G - Physics

01

H

73/68, 340/148.9

G01H 1/00 (2006.01) G01H 1/06 (2006.01) G01H 11/04 (2006.01) G01L 23/22 (2006.01) G10K 11/04 (2006.01)

Patent

CA 1186389

ABSTRACT TUNED VIBRATION DETECTOR This invention comprises a vibration sensor for detecting engine knock. The sensor has a tuning mechanism which is mechanically resonant with a pre- selected vibrational frequency. The resonating move- ments of this tuning mechanism are adapted to apply varying stress to an associated magnetostrictive element. A magnetic biasing element imparts a magnetiza- tion to the magnetostrictive element and a detecting means is associated with the magnetostrictive element for detecting changes in the magnetization caused by the varying applied stress.

420469

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