Digital signal process method for light- frequency conversion type pulse blood oxygen instrument

A digital signal processing, pulse oximeter technology, applied in the fields of medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of measurement technology difficulties, power consumption and dynamic range adjustment, etc., to improve the signal-to-noise ratio, cost and Low power consumption and small size
CN1915167AActive Publication Date: 2007-02-21XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2007-02-21

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Abstract

A method for processing the digital signals of a light-frequency conversion type pulse oxyhemograph includes such steps as using a light-frequency converter to directly convert the light signals received by human tissue to the electric pulse signals, using microprocessor to count the electric pulse signals and time, and calculation to digital signals to obtain the blood oxygen saturation degree and cardiac rhythm value.
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Description

Technical field

[0001] The invention relates to a digital signal processing method of a digital pulse oximeter, in particular to a digital signal processing method of a light-frequency conversion pulse oximeter. Background technique

[0002] Pulse oximeter is a non-invasive, continuous monitoring of human arterial blood oxygen saturation of medical equipment. It has become a routine configuration equipment for anesthesia monitoring and intensive care in hospitals. It is also widely used in various mobile monitoring and sleep monitoring outside the hospital. . The development of family and community health care systems has put forward new requirements for the design and manufacture of pulse oximeters, that is, it is hoped that low-cost, high-performance wearable pulse oximeters can be provided to be widely used in family and community medical networks.

[0003] The working principle of pulse oximeter is based on oxyhemoglobin (HbO 2 ) And reduced hemoglobin (Hb) have different abs...

Claims

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