Wearable vital sign monitoring device and method

Abstract

The invention relates to a wearable vital sign monitoring device. A laser light source of the wearable vital sign monitoring device is used for emitting laser to a sensing optical fiber; two ends of the sensing optical fiber are respectively connected with a laser light source and a photoelectric conversion module; the sensing optical fiber is bent after bearing the pressure of pulse or breathingor heartbeat movement of a human body, and a laser signal transmitted in the sensing optical fiber is lost at a bent part and is modulated based on a bending loss principle; the photoelectric conversion module is used for converting the modulation signal of the laser bending loss output by the sensing optical fiber into an electric signal representing the pulse or breathing or heartbeat movement of the human body; and a vital sign signal extraction module is used for extracting the corresponding human body pulse or breath or heartbeat frequency from the electric signal representing the human body pulse or breath or heartbeat movement. According to the invention, the vital sign information of the human body can be accurately monitored in real time.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a wearable vital sign monitoring device and method. Background technique [0002] With the development of social economy and technology and the improvement of people's requirements for quality of life, people's demand for testing their own health is increasing. Respiratory rate and heart rate are the most basic vital signs of the human body. Morbid signs of the human body are often reflected in abnormal respiration rate and heart rate. Therefore, daily real-time monitoring of respiration rate and heart rate is of great significance for human health assessment and disease prevention . Long-term monitoring of breathing rate and heartbeat can make the health status of the monitored person be monitored and mastered in real time, but most of the traditional monitoring systems cannot be made into wearable devices, and the measurement parameters of wearable devices in pra...

AI Technical Summary

Problems solved by technology

However, due to the limited strength and flexibility of the optical fiber, it cannot be excessively bent, and it is difficult to apply to people's daily life and sports. Therefore, there are almost no wearable products based on the optical fiber sensing theory to monitor vital signs signals.

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