Weight sensor device

Details Weight sensor device Weight sensor device

1992-08-27

1994-11-08

Miller, Jr., George H.

Weighing scales

Self-positioning

Electrical current generating or modifying

310338, G01G 314, H01L 4104

Patent

active

053629299

ABSTRACT:
A weight measuring device includes two piezoelectric elements. The first piezoelectric element induces vibration in an object to be measured, and the second one detects the reaction force of the object generated by the vibration. This force is detected by a voltage monitor circuit as an output voltage from the second piezoelectric element. From the voltage which has been detected, the weight of object is determined. The device further includes an absorbing element to absorb unnecessary piezoelectric strain in reaction force generated when the object vibrates. The invention provides a compact weight sensor which can be produced at low cost, and which can measure weight with high accuracy.

REFERENCES:
patent: 4050530 (1977-09-01), Storace
patent: 4697657 (1987-10-01), Portman Jr. et al.
patent: 4773493 (1988-09-01), Goodier
patent: 5095764 (1992-03-01), Saner

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