Method and apparatus for testing a piezoelectric force sensor

Details Method and apparatus for testing a piezoelectric force sensor Method and apparatus for testing a piezoelectric force sensor

1993-08-05

1995-09-05

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01P 1508

Patent

active

054470510

ABSTRACT:
A test system for a piezoelectric element per se or a piezoelectric element in a physical system, which is subject to forces which deform the piezoelectric element, couples an electrical pulse to the piezoelectric element sufficient to stress the element and induce mechanical ringing upon pulse removal. The ringing electrical signal developed by the piezoelectric element characterizes the functionality of the piezoelectric element. A response circuit which is responsive to the ringing electrical signal provides an electrical signal indicative of the functional condition of the piezoelectric element. The electrical signal is peak detected. The peak detected voltage is compared with a reference voltage to provide an indication of the functionality of the piezoelectric element.

REFERENCES:
patent: 4851705 (1989-07-01), Musser et al.
patent: 5004985 (1991-04-01), Holroyd et al.
patent: 5070843 (1991-12-01), Komurasaki
patent: 5166880 (1992-11-01), Furui
patent: 5282387 (1994-02-01), Suzuki

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