To provide a biological information detector which can detect information on a living body including the position of the living body in a room.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 based on the difference in the frequency between the transmission wave and a reflected wave from the object； a first differential data calculation unit 30 for calculating first differential data on the difference between the current distance spectrum intensity data and the previous distance spectrum intensity data, the differential data being obtained on a distance-by-distance basis based on the result of detection of the detection system 2； a second differential data calculation unit 40 for calculating second differential data on the difference between the result of a moving averaging procedure done on the current distance spectrum intensity data and the result of a moving averaging procedure done on the previous distance spectrum intensity data, the differential data being obtained on a distance-by-distance basis based on the result of detection of the detection system 2； and a position determination unit 33 for determining the position of a living body based on the first differential data and the second differential data.SELECTED DRAWING: Figure 2【課題】生体の居室内における位置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、検出系２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第１の差分データを算出する第１の差分データ算出部３０と、検出系２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に対して行った移動平均処理の結果との差を距離毎に求めた第２の差分データを算出する第２の差分データ算出部４０と、第１の差分データ及び第２の差分データに基づいて、生体の位置を判定する位置判定部３３とを備える。【選択図】図２
