Weighing scales – Structural installation – Vehicle
Patent
1997-12-18
1999-11-16
Gibson, Randy W.
Weighing scales
Structural installation
Vehicle
177144, 177210R, 280735, 200 85R, 200 85A, 200512, G01G 1908, G01G 1952, G01G 314, H01H 302
Patent
active
059862211
ABSTRACT:
A membrane weight sensor incorporates a plurality of membrane switch elements, each characterized by a distinct activation force threshold determined by the effective diameter and activation travel distance of the associated membrane. A plurality of membrane switch elements is incorporated into a single membrane switch pad. The membrane switch pad is aligned with a pair of first and second plates, one of which incorporates a plurality of protrusions, each operatively coupled to a different membrane switch element for purposes of deflecting the associated membrane. The signals from each of the associated switch elements are encoded and combined so as to form a single analog output signal having a plurality of discrete levels indicative of the amount of force applied to the membrane weight sensor.
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Automotive Systems Laboratory Inc.
Gibson Randy W.
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