DEVICE FOR DETECTING A PERCUSSION EVENT, AND ASSOCIATED MOBILE SYSTEM
First Claim
1. A device for detecting percussion events comprising at least one axial accelerometer sensor, characterized in that it also comprises at least one additional axial sensor insensitive to the translational vibrations, for measuring an information item representative of the orientation of the device relative to a vector field of known direction within a fixed coordinate system not linked to the device, and low cut-off filtering means provided with at least one input receiving measurements transmitted by the axial sensor or sensors, means of analyzing the measurements filtered by said low cut-off filtering means, comprising comparison means for comparing data from the analysis means with one or two thresholds.
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Accused Products
Abstract
The device for detecting percussion events (DISP) comprises at least one axial accelerometer sensor (ACC1, ACC2, ACC3), characterized in that it also comprises at least one additional axial sensor insensitive to the translational vibrations (MAGN1, MAGN2), for measuring an information item representative of the orientation of the device (DISP) relative to a vector field of known direction within a fixed coordinate system not linked to the device (DISP), and low cut-off filtering means (FILTCB) provided with at least one input receiving measurements transmitted by the axial sensor or sensors (ACC1, ACC2, ACC3, MAGN1, MAGN2), means (AN) of analyzing the measurements filtered by said low cut-off filtering means (FILTCB), comprising comparison means (COMP) for comparing data from the analysis means (AN) with one or two thresholds (SP, SN).
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Citations
16 Claims
- 1. A device for detecting percussion events comprising at least one axial accelerometer sensor, characterized in that it also comprises at least one additional axial sensor insensitive to the translational vibrations, for measuring an information item representative of the orientation of the device relative to a vector field of known direction within a fixed coordinate system not linked to the device, and low cut-off filtering means provided with at least one input receiving measurements transmitted by the axial sensor or sensors, means of analyzing the measurements filtered by said low cut-off filtering means, comprising comparison means for comparing data from the analysis means with one or two thresholds.
Specification