Vital sign parameter monitoring device and method based on four-cone optical fiber interferometer

Abstract

The invention provides a vital sign parameter monitoring device and method based on a four-cone optical fiber interferometer. The device is characterized by comprising a light source, a four-cone sensing optical fiber and an electrophotonic detector connected in sequence by a transmission optical fiber, and an upper computer connected with the electrophotonic detector. Compared with other vital sign parameter monitoring systems based on interference type optical fiber, the vital sign parameter monitoring device has the advantages that a reference arm and an interference arm are not separated,and thus the influence of environment on the reference arm is avoided. For sensing, the four-cone sensing optical fiber is both sensing fiber and reference fiber without the problems of external influence on the reference arm and interference on vital sign monitoring. At the same time, the vital sign parameter monitoring device has the advantages of simple structure, simple process steps, easy preparation, good product stability and long service life, can realize real-time measurement and uninterrupted measurement of vital signs of human body, and can use both coherent light sources and non-coherent light sources.

Description

technical field [0001] The invention belongs to the technical field of real-time monitoring of vital sign parameters, in particular to a device and method for monitoring vital sign parameters based on a four-cone optical fiber interferometer. Background technique [0002] In recent years, the incidence of cardiovascular and cerebrovascular diseases has continued to increase, and real-time online detection of vital signs parameters of the human body can achieve the effect of preventing cardiovascular and cerebrovascular diseases. The monitoring equipment for vital signs parameters can be roughly divided into two types: invasive and non-invasive. Type vital sign parameter monitoring equipment needs to be in close contact with the skin of the test subject, and is not suitable for long-term monitoring. Non-invasive vital sign monitoring equipment has technical advantages, and can measure the vital sign parameters of the test subject without direct contact with the test subject's...

AI Technical Summary

Problems solved by technology

However, most of them are electronic sensor monitoring devices, which are greatly affected by electromagnetic interference and are not suitable for use in CT and MRI examinations.

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