PROBLEM TO BE SOLVED: To eliminate the need for a device fixation operation of equipment and a measurement assistant, achieve high precision measurement under the same measurement condition while being a simple measurement act so that an elderly person may repeat and continue by oneself on a daily basis, and enable a walking cycle variation coefficient being an important indicator of the syndrome at old age and the evaluation of the aging variation.SOLUTION: (1) Walking start is automatically determined to eliminate failure of measurement, and the measurement is made in the constant step count just after an acceleration period and measurement conditions are aligned to enable comparison with the standard and temporal comparison. (2) A measuring apparatus is contained in a pocket of the garment coming in contact with a thigh without being fixedly worn in a body. (3) Gravity direction acceleration is calculated from a value of an acceleration sensor of the measuring apparatus. (4) The time of arrival of an impact of the heel grounding that spreads without going by way of a hip joint is detected from the transitivity and high precision measurement of the walking cycle variation coefficient is achieved. (5) The measurement results capable of recognizing repeatability are extracted from multiple measurement results of the same timing, compared with the standard, or evaluated by catching a sequential change.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】機器の装着固定動作や計測補助者を不要として、高齢者が自分自身で日常的に反復および継続できるような簡単な計測行為でありながら同一計測条件下の高精度計測を実現し、老年症候群の重要指標である歩行周期変動係数とその経時的変化の評価を可能にする。【解決手段】▲１▼歩行開始を自動判別して計測の失敗をなくし、且つ加速期間直後の一定歩数において計測することとして計測条件を揃えて基準との比較や経時的な比較を可能にし、▲２▼身体に固定装着することなく、大腿部に接した衣類のポケットに計測機器を収納し、▲３▼計測機器の加速度センサの値から重力方向加速度を算出し、▲４▼その推移から股関節を経由せずに伝播する踵接地の衝撃の到達時刻を検出して歩行周期変動係数の高精度計測を実現する。▲５▼同時期の複数の計測結果から、再現性が認められる計測結果を抽出し、基準と比較し、あるいは時系列の変化を捉えて評価する。【選択図】図２
