PROBLEM TO BE SOLVED: To provide a biological state acquisition device and the like that acquires biological signals of a biological body in a non-contact manner and can acquire information related to the biological state without performing complicated processing such as frequency analysis with respect to the biological signals.SOLUTION: Biological state acquisition means 52 transmits an electromagnetic wave to a body surface of a biological body, IQ detects its reflection wave, sequentially acquires an I signal and a Q signal in time series and acquires a state of the biological body on the basis of a locus on an I-Q plane of acquisition signals acquired. The biological state acquisition means 52 for acquiring the state of the biological body comprises: at least one of breathing detection means 53 and heart rate detection means 56 body motion detection means 57 for calculating a number of body motions within a predetermined period by using a norm of a position vector of the acquisition signals on the I-Q plane and autonomic nerve state determination means 54C. The autonomic nerve state determination means 54C determines a state of an autonomic nerve on the basis of calculation results of at least one of the breathing detection means 53 and the heart rate detection means 56 and calculation results of the body motion detection means 57.COPYRIGHT: (C)2014,JPO&INPIT【課題】非接触で生体の生体信号を取得し、生体信号に対して周波数解析などの複雑な処理をせずに、生体状態に関する情報を取得することのできる生体状態取得装置等を提供する。【解決手段】生体の体表面に電磁波を送信し、その反射波をIQ検波して、I信号とQ信号とを時系列に順次取得し、取得した取得信号のIQ平面上の軌跡に基づいて、生体の状態を取得する。生体の状態を取得する生体状態取得手段52は、呼吸検出手段53と心拍検出手段56のうち少なくとも一方と、IQ平面上の取得信号の位置ベクトルのノルムを用いて一定期間内の体動数を算出する体動検出手段57と、自律神経状態判定手段54Cとを備え、自律神経状態判定手段54Cは、呼吸検出手段53と心拍検出手段56のうち少なくとも一方の算出結果と体動検出手段57の算出結果とに基づいて自律神経の状態を判定する。【選択図】図34
