PROBLEM TO BE SOLVED: To provide a biological information detector which can detect information on a living body including on whether the living body fell down.SOLUTION: A biological information detector 1 includes: a detection system 2 for sending a transmission wave made of continuous waves with modulated frequencies to a target object and detecting distance spectrum intensity data on the basis of the difference in the frequency between the transmission wave and a reflected wave from the object; and a falling detection unit for detecting a falling of a living body if the change rate of the intensity becomes at least a threshold value according to the differential data.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】生体の転倒の有無を含む生体に関する情報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、距離スペクトル強度データを検出する検出系2と、差分データに基づいて、強度の変化率が閾値以上になった場合、生体の転倒を検出する転倒検出部とを備える。【選択図】図2