PROBLEM TO BE SOLVED: To provide a stress evaluation device and a stress evaluation method capable of reducing the burden on a subject during the measurement of a pulse wave and accurately performing stress diagnosis even in the case of measurement performed in a short period of time.SOLUTION: The stress evaluation device includes a pulse wave measuring unit 3 for measuring the subjects pulse wave from light transmitted through or reflected by a finger touching it, and a stress evaluation diagnosis unit 7 for diagnosing the subjects stress based on the pulse wave data obtained. The pulse wave measuring unit 3 includes a pressure detection unit 22 for detecting whether or not there is contact with the finger, and an acceleration measuring unit 23 for measuring the acceleration of the finger during contact. The stress evaluation device includes a data preprocessing unit 5 including a data acquisition determining unit 25 for determining whether or not the acquisition of the pulse wave data should be allowed based on information from the pressure detection unit 22 and the acceleration measuring unit 23, and a data process determining unit 26 which compares the measured value of the pulse wave data in a certain period of time and its fluctuation width with a predetermined threshold values so as to determine whether or not the stress evaluation diagnosis unit 7 should be allowed to process the pulse wave data.COPYRIGHT: (C)2012,JPO&INPIT【課題】脈波測定の際の被験者の負担を軽減するとともに、短時間の測定でもストレス診断を精度良く行うことができるストレス評価装置及びストレス評価方法を提供すること。【解決手段】接触した指を透過又は反射した光から被験者の脈波を測定する脈波測定部3と、取得した脈波データから被験者のストレスを診断するストレス評価診断部7と、を備えるストレス評価装置であって、脈波測定部3が、指との接触の有無を検知する押圧力検知部22と、接触時の指の加速度を検出する加速度測定部23と、を備え、押圧力検知部22及び加速度測定部23からの情報に基づき、脈波データの取得の可否を判断するデータ取得判定部25と、一定時間における脈波データの計測値及びこれの変動幅と所定の閾値とを比較して、ストレス評価診断部7における脈波データの処理の可否を判断するデータ処理判定部26と、を有するデータ前処理部5を備えている。【選択図】図2
