PROBLEM TO BE SOLVED: To provide a pulse wave measuring apparatus capable of highly accurately measuring pulse waves without coming into contact with a living body which is an object of measurement.SOLUTION: The pulse wave measuring apparatus irradiates an object with first electromagnetic waves of a first frequency, irradiates the object with second electromagnetic waves of a second frequency different from the first frequency, and receives reflected synthetic waves which are synthetic waves of first reflected waves, which are reflected electromagnetic waves from the object of the first electromagnetic waves, and second reflected waves, which are reflected electromagnetic waves from the object of the second electromagnetic waves. Then, the pulse wave measuring apparatus obtains a first difference output waveform by multiplying a reflected synthetic wave waveform and a first frequency waveform of the first frequency, obtains a second difference output waveform by multiplying the reflected synthetic wave waveform and a second frequency waveform of the second frequency, and obtains a measured value of displacement of a distance of the object on the basis of a phase difference between the first difference output waveform and the second difference output waveform.COPYRIGHT: (C)2013,JPO&INPIT【課題】 測定の対象物である生体に対して非接触かつ高い精度で脈波測定を行うことができる脈波測定装置を提供する。【解決手段】 第一周波数の第一電磁波を対象物に対して照射し、第一周波数とは異なる第二周波数の第二電磁波を対象物に対して照射し、第一電磁波の対象物からの反射電磁波である第一反射波と、第二電磁波の対象物からの反射電磁波である第二反射波との合成波である反射合成波を受信し、反射合成波波形と、第一周波数の第一周波数波形とを乗算することにより第一差分出力波形を得て、反射合成波波形と、第二周波数の第二周波数波形とを乗算することにより第二差分出力波形を得て、第一差分出力波形と第二差分出力波形との位相差に基づいて、対象物の距離の変位の測定値を得るように構成される、脈波測定装置である。【選択図】図1
