PROBLEM TO BE SOLVED: To provide a body motion sensor not hindering when measuring, capable of corresponding to a wide range of trunks, hardly generating malfunction, and having high precision.SOLUTION: The body motion sensor is constituted by bisecting an inside space of a box body by a sheet having a strain sensor, has a hole preventing a hermetically sealed condition in one space, a detecting part having a tube attaching part communicating into the inside space in the other space, a tube connected to the tube attaching part and wound around a measuring part along with the detecting part, a fixing part closing and fixing the tube in an optional position, and is characterized by sensing the inner volume change of the space of the tube and the space to which the tube is connected by the expansion/contraction of the tube along with the body movement by the strain sensor.COPYRIGHT: (C)2012,JPO&INPIT【課題】測定時に邪魔にならず、幅広い体幹に対応でき、誤作動が生じにくく、精度の高い体動センサを提供する。【解決手段】本発明は、歪みセンサーを備えたシートで箱体の内部空間を二分し、一方の空間には密閉状態を防ぐ孔を備え、他方の空間には空間内に連通するチューブ取付部を備えた検出部と、前記チューブ取付部に接続され前記検出部とともに計測部位に巻き付けるチューブと、前記チューブを任意の位置で閉塞固定する留め部とからなり、体動に伴う前記チューブの伸縮によるチューブ及びチューブが接続された空間の内容積変化を歪みセンサーで感知することを特徴とする体動センサの構成とした。【選択図】 図1
