PROBLEM TO BE SOLVED: To accurately grasp the state of a living body. A living body detection device includes a transmitter that can transmit a wideband or ultrawideband radio wave toward a predetermined detection area, and a receiver that can receive a reflected wave of the radio wave emitted from the transmitter. Based on the reflected wave received by the receiving unit, a signal strength calculation unit that calculates the signal strength in each of the plurality of areas forming the detection area, and a plurality of signal strength calculation units based on the time variation of the signal strength in each of the plurality of areas. A position identifying unit that identifies the existing area where the living body exists in the area, and tracks the movement of the living body based on the time variation of the signal intensity in each of the existing area and at least one adjacent area adjacent to the existing area, A tracking unit that generates operation data and a data generation unit that generates biometric data based on a temporal change in signal strength in an existing area are provided. [Selection diagram] Figure 1【課題】生体の状態を精度よく把握する。【解決手段】生体検知装置は、広帯域又は超広帯域の無線電波を所定の検知領域に向けて発信可能な発信部と、発信部から発信された無線電波の反射波を受信可能な受信部と、受信部が受信した反射波に基づいて、検知領域を構成する複数のエリアのそれぞれにおける信号強度を算出する信号強度算出部と、複数のエリアのそれぞれにおける信号強度の時間変動に基づいて、複数のエリアのうち生体が存在する存在エリアを特定する位置特定部と、存在エリアと存在エリアに隣り合う少なくとも一つの隣接エリアとのそれぞれにおける信号強度の時間変動に基づいて生体の動きをトラッキングして、動作データを生成するトラッキング部と、存在エリアにおける信号強度の時間変動に基づいて生体データを生成するデータ生成部とを備える。【選択図】図１
