PROBLEM TO BE SOLVED: To improve detection accuracy of a biological signal without requiring any prior learning.SOLUTION: The biological signal detection system includes: a Doppler sensor that receives reflected waves from a subject to acquire a Doppler signal an integral value calculation part that integrates, for each time, amplitude or phase of each frequency included in a prescribed frequency bandwidth of the Doppler signal, and calculates a time change in integral values and a biological signal detection part that detects a biological signal of the subject on the basis of the time change in the integral values.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】事前学習を必要とせずに生体信号の検出精度を向上すること。【解決手段】本生体信号検出システムは、被験者からの反射波を受信してドップラー信号を取得するドップラーセンサと、前記ドップラー信号の所定の周波数帯域内に含まれる各周波数の振幅又は位相を時刻毎に積分し、積分値の時間変化を算出する積分値算出部と、前記積分値の時間変化に基づいて、前記被験者の生体信号を検出する生体信号検出部と、を有する。【選択図】図4
