PROBLEM TO BE SOLVED: To provide a pulse wave measurement device for measuring a correct heartbeat by detecting a false peak for one beat and removing the detected peak.SOLUTION: The pulse wave measurement device includes: generating differential data B1 and B2 indicating the waveform of a differential pulse wave obtained by differenciating the waveform of the differential pulse wave and smoothing the same detecting peak data P1 indicating the time of generation of an upper peak of the differential waveform of the differential pulse wave on the basis of the differential data B1 indicating the differential wave waveform of a small degree of smoothing, and detecting peak data P2 indicating the time of generation of an upper peak of the differential waveform of the differential pulse wave on the basis of the differential data B2 indicating the differential wave waveform of the large degree of smoothing comparing the peak data P1 with the peak data P2 and generating peak data P3 from a plurality of samples configuring the peak data P1, other than samples not corresponding to the peak data P2 and computing intervals of pulse waves on the basis of the peak data P3.COPYRIGHT: (C)2012,JPO&INPIT【課題】1拍ごとの偽ピークを検出してこれを除去して、正確な心拍を計測する。【解決手段】脈波計測装置は、脈波波形を微分すると共に平滑化した微分脈波波形を示す微分データB1及びB2を生成し、平滑化の程度が小さい微分脈波波形を示す微分データB1に基づいて、微分脈波波形の上側ピークの発生時刻を示すピークデータP1を検出する一方、平滑化の程度が大きい微分データB2に基づいて、微分脈波波形の上側ピークの発生時刻を示すピークデータP2を検出し、ピークデータP1とピークデータP2とを比較して、ピークデータP1を構成する複数のサンプルからピークデータP2に対応しないサンプルを除いてピークデータP3を生成し、ピークデータP3に基づいて脈波間隔を演算する。【選択図】図5