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Non-contact photoplethysmographic pulse measurement device and oxygen saturation and blood pressure measurement devices using the same
专利权人:
Kwang Suk Park
发明人:
Kwang Suk Park,Hyun Jae Baek
申请号:
US12408295
公开号:
US09031629B2
申请日:
2009.03.20
申请国别(地区):
US
年份:
2015
代理人:
摘要:
The present invention provides a non-contact photoplethysmographic (PPG) pulse measurement device, and oxygen saturation and blood pressure measurement devices using the PPG pulse measurement device. The PPG pulse measurement device includes a sensing unit including at least two light emitting units for emitting light into a human body without making direct contact with skin, and a light receiving unit for sensing reflected light. A signal separation unit separates output of the sensing unit into a ripple component and a ripple-free component. A microprocessor unit monitors the ripple-free component and compares the ripple-free component with a DC signal value. A luminance adjustment unit adjusts luminance of the light emitting units. A filter and amplification unit eliminates noise from the ripple component. An A/D conversion unit converts output of the filter and amplification unit into a digital signal. A signal transmission unit transmits output of the A/D conversion unit.
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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