The biological information sensor (1) includes a flexible substrate (2), an adhesive portion (3), a heartbeat signal detector (4), an electrocardiogram signal detector (7), a pulse wave detector (10), a signal processing portion ). Based on the heartbeat signal (HBR) by the heartbeat signal detector (4) and the electrocardiogram signal (ECG) by the electrocardiogram signal detector (7), the signal processing unit (14) calculates an electrocardiogram signal (ECG ) Of the heartbeat of the heart is estimated. The signal processing unit (14) estimates the pulse wave propagation time (PTT) based on the calculated ECG peak estimation value and the photoelectric pulse wave signal (PPG) by the pulse wave detector (10).生体情報センサ(1)は、フレキシブル基板(2)、貼着部(3)、心拍信号検出器(4)、心電図信号検出器(7)、脈波検出器(10)、信号処理部(14)を備える。信号処理部(14)は、心拍信号検出器(4)による心拍信号(HBR)と心電図信号検出器(7)による心電図信号(ECG)とに基づいて、心拍信号(HBR)から心電図信号(ECG)のR波を推定した心電ピーク推定値を算出する。信号処理部(14)は、算出した心電ピーク推定値と脈波検出器(10)による光電脈波信号(PPG)とに基づいて、脈波伝搬時間(PTT)を推定する。
