Verfahren und System zur Gangdetektion einer Person

Details

Veröffentlichungs-Nr.

EP3782547

Aktenzeichen

EP19192928

Anmeldetag

21. August 2019

Veröffentlichung

10. April 2024

Erteilung

10. April 2024

Rechtsraum

EP

IPC

A61B5/11G06N7/01G16H50/20// G16H40/63G06N5/01

Abstract

The present invention concerns a method of detecting gaits of an individual by using a gait detection sensor (1) worn by the individual. The sensor comprises an accelerometer (3) and a processing unit (5, 7, 9, 11, 13). The method comprises: obtaining an acceleration signal representing one or more sensor acceleration values; sampling the acceleration signal to obtain a sampled acceleration signal; segmenting the sampled acceleration signal into a given number of windows of a given duration to obtain a segmented acceleration signal; extracting a feature set from the segmented acceleration signal; determining a probability value, by using a trained probability estimator (9) using the extracted feature set, for a respective window, n, where n is a positive integer greater than zero, the probability value giving an estimated probability value of gait occurrence for the individual during the respective window; modifying the estimated probability value by using a histogram of previously detected gait durations to obtain a modified probability value; and determining, based on the modified probability value, and by using a determination threshold whether or not the respective window represents gait occurrence.

Anmelder

Firma

The Swatch Group Research and Development Ltd

Land

🇨🇭 Schweiz

Fachgebiete