PROBLEM TO BE SOLVED: To provide an indoor accident avoidance system for detecting a health condition of a living body indoors, a sign of its change, or an indoor environment in advance, and provide assistance so as to create an environment in a direction to avoid a risk.SOLUTION: An indoor accident avoidance system includes: a human body information detection sensor 1 installed indoors for detecting biological information including a body motion biological diagnostic means 2 for estimating a condition of a living body detected from the biological information or its change undulation determination means 3 for deriving a change in the undulation of a body position including a standing position, a sitting position and a lying position, or a movement of the living body from the change in the body motion and intervention means 4 for performing alerting or biological information notification according to the result of the estimation by the biological diagnostic means 2 when the undulation determination means 3 determines a change in the undulation of the body position or a movement of the living body.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】 屋内における生体の健康状態若しくはそれが変化する予兆又は屋内環境を事前に察知し危険を回避する方向へ環境が整うように支援する屋内事故回避システムの提供。【解決手段】 屋内に設置し体動を含む生体情報を検出する人体情報検出センサ1と、前記生体情報又はそれらの変化から検出した生体の様態を推定する生体診断手段2と、前記体動の変化から立位、座位又は臥位を含む体位の起伏変化又は生体の移動を導く起伏判定手段3と、前記起伏判定手段3が体位の起伏変化又は生体の移動と判定した時に前記生体診断手段2の推定結果に則して注意喚起又は生体情報の通知を行う介入手段4を備えることを特徴とする屋内事故回避システム。【選択図】 図1