Pedometer device and step detection method using an algorithm for self-adaptive computation of acceleration thresholds
US7463997B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2006 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Oct 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C22/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a pedometer device for detecting and counting steps of a user on foot, an accelerometer sensor detects a vertical acceleration generated during the step. A processing unit, connected to the accelerometer sensor, processes an acceleration signal relating to the acceleration in order to detect the occurrence of a step, and in particular compares the acceleration signal with a first reference threshold. The processing unit automatically adapts the first reference threshold as a function of the acceleration signal. In particular, the processing unit modifies the first reference threshold as a function of an envelope of the amplitude of the acceleration signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.