公开(公告)号：US20230040492A1

公开(公告)日：2023-02-09

申请号：US17790357

申请日：2020-01-08

Applicant: NEC Corporation

Inventor： Chenhui HUANG ,  Kenichiro FUKUSH

IPC: A61B5/11 ,  A61B5/00

Abstract: A detection device that includes an extraction unit that extracts waveform data based on a gait of a walker using sensor data acquired from a sensor installed on a foot of the walker and a detection unit that detects a gait event from the waveform data extracted by the extraction unit.

公开(公告)号：US20220146280A1

公开(公告)日：2022-05-12

申请号：US17436210

申请日：2019-03-27

Applicant: NEC CORPORATION

Inventor： Noriyuki TONOUCHI ,  Kazuki IHARA ,  Chenhui HUANG ,  Kenichiro FUKUSH

IPC: G01C23/00

Abstract: This walk discrimination device is provided with: a data reception unit for receiving sensor data that includes an acceleration and an angular speed acquired by a sensor provided to a shoe in order to measure the walk of a pedestrian for each single step on the basis of the sensor data; an acceleration determination unit for determining whether the acceleration included in the sensor data is positive or negative; an attitude angle calculation unit which calculates an attitude angle using the acceleration and the angular speed included in the sensor data; an attitude angle determination unit which determines whether or not the attitude angle calculated by the attitude angle calculation unit has exceeded a threshold value and determines whether or not a peak of the attitude angle has been detected; a walk discrimination unit which discriminates a walk on the basis of a sequence of the determinations made by the acceleration determination unit and the attitude angle determination unit; and an output unit which outputs a discrimination result provided by the walk discrimination unit.