PROBLEM TO BE SOLVED: To provide a biological information detection device capable of detecting a posture of a living body at a specific place. A biological information detection device 1 transmits a transmitted wave of a frequency-modulated continuous wave to an object along a vertical direction, and based on a frequency difference between the transmitted wave and a reflected wave from the object, the object Based on the detection system 3 that detects the distance spectrum intensity data that shows the intensity of each distance to the object in time series and the detection result of the detection system 3, the current distance spectrum intensity data and the distance spectrum intensity immediately before it. Based on the first difference data calculation unit 30 that calculates the difference data obtained by obtaining the difference from the data for each distance and the difference data, it is determined whether the living body has fallen or is in a posture other than the fall. It includes a state determination unit 37. [Selection diagram] Fig. 2【課題】特定の場所での生体の姿勢を検出することができる生体情報検出装置を提供する。【解決手段】生体情報検出装置１は、周波数変調した連続波による送信波を、鉛直方向に沿って対象物に送信し、送信波と対象物からの反射波との周波数差に基づいて、対象物までの距離毎の強度を時系列的に示す距離スペクトル強度データを検出する検出系３と、検出系３の検出結果に基づいて、現在の距離スペクトル強度データとその１つ前の距離スペクトル強度データとの差を距離毎に求めた差分データを算出する第１の差分データ算出部３０と、差分データに基づいて、生体が転倒しているか、又は転倒以外の姿勢をとっているかを判定するステート判定部３７とを備える。【選択図】図２
