Force sensor assembly

G - Physics – 01 – L

Patent

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Details

G01L 9/00 (2006.01) B60N 2/00 (2006.01) G01G 19/414 (2006.01) B60R 21/01 (2006.01)

Patent

CA 2339681

A force sensor assembly (20) has a sealed body (34) filled with a liquid or a gel (53). A pressure transducer, together with a supporting integrated circuit (66), is positioned to respond to the pressure of the liquid or gel. Loads are applied to the pressure transducer through the gel by a piston riding within the body. Compressive loads are thereby transformed into a pressure on the sensor and its support electronics, resulting in a low cost, accurate, and durable sensor. The sensor functions well for relatively low loads of less than a few hundred pounds.

L'invention concerne un système (20) de capteur de force comprenant un corps (34) rempli d'un liquide ou d'un gel (53). Un transducteur de pression, associé à un (66) intégré auxiliaire est positionné de manière à réagir en réponse à la pression du liquide ou du gel. Un piston se déplaçant à l'intérieur du corps applique des charges sur le transducteur de pression par l'intermédiaire du gel. Les charges de compression sont ainsi transformées en une pression s'exerçant sur le capteur et son électronique auxiliaire ce qui permet d'obtenir un capteur bon marché, précis et durable. Ce capteur fonctionne bien pour des charges relativement faibles, inférieures à quelques centaines de livres.

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