System and method for detecting the walk of a person
US9265448B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Feb 25, 2010 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for detecting the walk of a person has a housing (BT) with at least a biaxial movement sensor (CM). The housing is attached to the upper portion of the body of the person, so that a first measurement axis of the sensor (CM) coincides with the anteroposterior axis (AP) or the vertical axis (VT) of the body and so a second measurement axis of said sensor (CM) coincides with the mediolateral axis (ML) of the body. An analysis means (MA) analyzes the measurements delivered by the sensor (CM). The analysis means includes a processing means (MT) for processing over a time window the measurement signals delivered by the sensor (CM), which includes means for searching for a dominant frequency (MRFD) in said signals. The analysis means also includes a detection means (MD) for detecting the walk of the person when a ratio between the dominant frequency of the signal of the first measurement axis and the dominant frequency of the second measurement axis, or between the dominant frequency of a Euclidian norm of the vector of measurements transmitted by the sensor (CM) and the dominant frequency of the signal of the second measurement axis, is substantially equal to two.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.