Acceleration detector

Details Acceleration detector Acceleration detector

G - Physics

01

P

G01P 15/12 (2006.01) G01P 15/18 (2006.01) G01P 21/00 (2006.01)

Patent

CA 2123925

In an acceleration detector fox detecting three-dimensional components of acceleration applied thereto independently with respect to three axes X, Y and Z of an orthogonal coordinate system, a plurality of resistance elements having a piezo resistance effect are formed in a thin-sheet resilient member with an unique arrangement thereof fox improving the sensitivity of the detector. Electric resistance of the resistance elements is varied in response to strain of the resistance elements accompanied with an elastic deformation of the resilient member. The resilient member is fixed at its periphery on a frame of the detector. A weight is connected with a center portion of the resilient member such that the elastic deformation is caused when the weight is displaced by receiving acceleration. When the X- and Y-axes is defined on the resilient member, all of resistance elements for detecting the components of acceleration with respect to the X- and Y-axes are limited within an inner area adjacent to a circumference of the center portion. The inner area is capable of causing a larger elastic deformation than an outer area adjacent to the frame when the weight is displaced by receiving the acceleration. Therefore, an improved sensitivity of the detector is accomplished by the arrangement of the resistance elements.

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