PROBLEM TO BE SOLVED: To solve the problem: a conventional pulse wave sensor has the difficulty in continuously measuring pulse waves over a long time although it can perform short-time pulse wave measurement.SOLUTION: A pulse wave sensor 100 has: a plurality of optical sensor units 101-1 to 101-n for irradiating a wrist 200 with a light and detecting the strength of light passing through a living body a control unit 102 for controlling to turn ON/OFF for each of the optical sensor units 101-1 to 101-n and an armlet-type housing 107 for containing the optical sensor units 101-1 to 101-n and the control unit 102.COPYRIGHT: (C)2012,JPO&INPIT【課題】従来の脈波センサでは、短期間の脈波測定を行うことはできても、長期間に亘る継続的な脈波測定を行うことは困難であった。【解決手段】脈波センサ100は、手首200に光を照射して生体内を透過した光の強度を検出する複数の光センサ部101-1~101-nと、複数の光センサ部101-1~101-n毎のオン/オフ制御を行う制御部102と、複数の光センサ部101-1~101-nと制御部102を収納する腕輪型筐体107と、を有する。【選択図】図16
