Method and device for estimating nervous degree of human body by optical plethysmography

A technique of photoplethysmography and tension, applied in psychological devices, instruments for radiological diagnosis, applications, etc., can solve problems such as affecting subjects
CN1517070AActive Publication Date: 2004-08-04SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SAMSUNG ELECTRONICS CO LTD
Publication Date
2004-08-04

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Abstract

A method and apparatus for evaluating human stress using PhotoPlethysmoGraphy (PPG) are provided. The method of evaluating human stress using PhotoPlethysmoGraphy (PPG), comprising: defining at least one PPG parameter; radiating light having at least one wavelength reacting to a blood component to be measured at a measuring target and measuring a PPG signal from the measuring target during a predetermined period of time; and evaluating human stress using stress indexes obtained from the PPG parameter.
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Description

technical field

[0001] The present invention relates to assessing the tension of human body, in particular, to a method and device for assessing the tension of human body by using photoplethysmography (PPG). Background technique

[0002] In the field of medical diagnosis, various methods have been tried using PPG to diagnose cardiovascular diseases or to detect the degree of progression of diseases or hardening of blood vessels. The PPG refers to a signal corresponding to the amount of light reflected by a selected part of the human body after being irradiated with light, and the irradiated light emitted from the light source of the light emitting device has a specific wavelength. Techniques using PPG have been primarily developed for the purpose of determining the physiological state of a patient in relation to the arterial system, but are often used as an aid in the diagnosis of specific diseases.

[0003] For example, US Publication No. US5830131 discloses a monitor for ...

Claims

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