Device for detecting a percussion event, and associated mobile system
US9151777B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2008 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Mar 25, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.