Acceleration sensor suitable for self-checking and a...

Details Acceleration sensor suitable for self-checking and a... Acceleration sensor suitable for self-checking and a...

H - Electricity

01

H

H01H 35/14 (2006.01) G01P 15/09 (2006.01) G01P 21/00 (2006.01) H01H 35/06 (2006.01) B60R 21/32 (1990.01)

Patent

CA 2074157

Abstract This invention relates to an acceleration sensor device suitable for self-checking during vehicle driving and a self-checking circuit. Therefore, an acceleration sensor device suitable for self-checking during driving is obtained by a planar vibrator consisting of piezoelectric area having piezoelectricity and non-piezoelectric area having no piezoelectricity, a plurality of first electrodes provided on an upper face of said piezoelectric area of the planar vibrator, at least one second electrode provided on an upper face of said non- piezoelectric area of the planar vibrator, and a third electrode means provided on lower face of the planar vibrator.

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