OMRON AUTOMOTIVE ELECTRONICS CO LTD;オムロンオートモーティブエレクトロニクス株式会社
发明人:
MITANI SHIGETOMO,三谷 重知
申请号：
JP2016174505
公开号：
JP2018038578A
申请日:
2016.09.07
申请国别(地区):
JP
年份:
2018
代理人:
摘要：
PROBLEM TO BE SOLVED: To accurately detect biological information such as a pulse and blood pressure.SOLUTION: An optical biological sensor 100 includes: a light projection part 10 for projecting lights of a first wavelength and a second wavelength onto an organism； a light reception part 20 for receiving a light including a light projected by the light projection part and reflected by the organism； a differential operation part 41 for calculating a differential signal of a reception signal received by the light reception part； a first operation part 51 for calculating the product of a first light reception signal corresponding to the light of the first wavelength received by the light reception part, and a second differential signal calculated by the differential operation part for a second light reception signal corresponding to the light of the second wavelength； a second operation part 52 for calculating the product of a second light reception signal corresponding to the light of the second wavelength received by the light reception part, and a first differential signal calculated by the differential operation part for a first light reception signal corresponding to the light of the first wavelength； and a third operation part 53 for calculating the difference between the product calculated by the first operation part and the product calculated by the second operation part.SELECTED DRAWING: Figure 3【課題】 脈拍や血圧などの生体情報を正確に検知する。【解決手段】 第１波長と第２波長の光を生体に投光する投光部１０と、投光部が投光した光が生体で反射した反射光を含む光を受光する受光部２０と、受光部が受光した受光信号の微分信号を演算する微分演算部４１と、受光部が受光した、第１波長の光に対応する第１受光信号と、第２波長の光に対応する第２受光信号を微分演算部が演算した第２微分信号との積を演算する第１演算部５１と、受光部が受光した、第２波長の光に対応する第２受光信号と、第１波長の光に対応する第１受光信号を微分演算部が演算した第１微分信号との積を演算する第２演算部５２と、第１演算部で演算された積と第２演算部で演算された積の差を演算する第３演算部５３とを備える光学式生体センサ１００。【選択図】 図３
