PROBLEM TO BE SOLVED: To provide a new method for determining appropriateness of a calculated pulse rate.SOLUTION: In a pulse rate monitor 1, a pulse rate calculation part 120 calculates the pulse rate of a test subject, based on the result detected by a pulse wave sensor 10. Then, a pulse rate difference calculation part 130 calculates a difference (pulse rate difference) between a reference pulse rate and a calculated pulse rate, and a deviation degree between the reference pulse rate and the calculated pulse rate is determined based on the pulse rate difference. Also, an SN ratio calculation part 140 calculates an SN ratio of a pulse wave signal detected by the pulse wave sensor 10, and reliability of the calculation result in the pulse rate calculation part 120 is determined based on the SN ratio. Then, a pulse rate appropriateness determination part 160 determines appropriateness of the calculated pulse rate, based on the pulse rate difference (deviation degree) calculated by the pulse rate difference calculation part 130 and the SN ratio (reliability) calculated by the SN ratio calculation part 140.COPYRIGHT: (C)2013,JPO&INPIT【課題】算出脈拍数の適否を判定するための新しい手法の提案。【解決手段】脈拍計1において、脈拍数算出部120は、脈波センサー10の検出結果に基づいて被検者の脈拍数を算出する。そして、脈拍数差算出部130は、基準脈拍数と算出脈拍数との差(脈拍数差)を算出し、当該脈拍数差に基づいて基準脈拍数と算出脈拍数との乖離度合を判定する。また、SN比算出部140は、脈波センサー10によって検出された脈波信号のSN比を算出し、当該SN比に基づいて脈拍数算出部120の算出結果の信頼性を判定する。そして、脈拍数適否判定部160は、脈拍数差算出部130によって算出された脈拍数差(乖離度合)とSN比算出部140によって算出されたSN比(信頼性)とに基づいて算出脈拍数の適否を判定する。【選択図】図7
