Piezoelectric vibrating beam force sensor

Details Piezoelectric vibrating beam force sensor Piezoelectric vibrating beam force sensor

G - Physics

01

L

G01L 1/16 (2006.01) G01L 9/00 (2006.01) G01P 15/097 (2006.01)

Patent

CA 2619996

A force sensor (10) is forced from a vibrating beam (11), an excitation piezoelectric device (12) to cause a vibration in the beam at its resonate frequency and a measurement piezoelectric device (12) to measure the frequencies being indication of the force applied to the beam (11). The excitation and measurement piezoelectric devices (12) are attached to the beam adjacent to each other at one end of the beam (11).

L'invention concerne un capteur de force (10) qui est contraint à partir d'un faisceau vibrant (11), un dispositif piézoélectrique d'excitation (12) destiné à provoquer une vibration dans le faisceau à sa fréquence de résonance et un dispositif piézoélectrique de mesure (12) destiné à mesurer les fréquences représentant une indication de la force appliquée au faisceau (11). Les dispositifs piézoélectriques d'excitation et de mesure (12) sont fixés au faisceau de manière contiguë l'un à l'autre à une extrémité du faisceau (11).

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