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Constituent Concentration Measuring Apparatus and Constituent Concentration Measuring Apparatus Controlling Method
专利权人:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人:
Kazunori NAGANUMA,Takuro TAJIMA,Yuichi OKABE,Shoichi SUDO
申请号:
US13669262
公开号:
US20130123591A1
申请日:
2012.11.05
申请国别(地区):
US
年份:
2013
代理人:
摘要:
An object of the present invention is to provide a noninvasive constituent concentration measuring apparatus and constituent concentration measuring apparatus controlling method, in which accurate measurement can be performed by superimposing two photoacoustic signals having the same frequency and reverse phases to nullify the effect from the other constituent occupying large part of the object to be measured. The constituent concentration measuring apparatus according to the invention includes light generating means for generating two light beams having different wavelengths, modulation means for electrically intensity-modulating each of the two light beams having different wavelengths using signals having the same frequency and reverse phases, light outgoing means for outputting the two intensity-modulated light beams having different wavelengths toward a test subject, and acoustic wave detection means for detecting an acoustic wave generated in the test subject by the outputted light.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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