Invention Grant
- Patent Title: Non-contact photoplethysmographic pulse measurement device and oxygen saturation and blood pressure measurement devices using the same
- Patent Title (中): 非接触式光电体积描记术脉搏测量装置和血氧饱和度测量装置使用相同
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Application No.: US12408295Application Date: 2009-03-20
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Publication No.: US09031629B2Publication Date: 2015-05-12
- Inventor: Kwang Suk Park , Hyun Jae Baek
- Applicant: Kwang Suk Park , Hyun Jae Baek
- Applicant Address: KR Seoul
- Assignee: SNU R&DB Foundation
- Current Assignee: SNU R&DB Foundation
- Current Assignee Address: KR Seoul
- Agency: H.C. Park & Associates, PLC
- Priority: KR10-2009-0005142 20090121
- Main IPC: A61B5/1455
- IPC: A61B5/1455 ; A61B5/024 ; A61B5/021 ; A61B5/0255 ; A61B5/0402

Abstract:
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.
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