Breathing depth and breathing frequency measuring device and method based on inertial measurement units

Abstract

The invention discloses a breathing depth and breathing frequency measuring device and method based on inertial measurement units. The breathing depth and breathing frequency measuring device comprises an outer shell used for providing a relative reference system, an inner shell serving as a chest breathing depth and breathing frequency measuring device, a first inertial measurement unit and a second inertial measurement unit. Firstly, relative reference is provided for movement of the chest through connection of the inner shell, the outer shell and a spring, and then the same inertial measurement unit and the same acceleration signal processing algorithm are adopted to obtain the breathing depth and the breathing frequency of a human body, so that the device can avoid interference generated by movement of the human body during breathing measurement, therefore, the device and the method capable of realizing real-time high-precision measurement of the breathing depth and the breathing frequency of the human body are obtained, and the problems that the existing breathing frequency monitoring is lack of real-time performance, the precision is greatly influenced by the motion state of the human body, and the breathing depth is lack of the device and the method for measuring the breathing depth are solved.

Description

Technical field [0001] The present invention belongs to the field of wearable human respiratory depth and respiratory frequency monitoring, and in particular, the present invention relates to a breathing depth and breathing frequency high precision measuring device based on an inertial measuring unit. Background technique [0002] The main manifestation of the human breathing signal is the respiratory depth and the respiratory frequency. Monitoring equipment for wearable human respiratory rates has developed rapidly in recent years, and there are already a variety of portable respiratory frequency monitoring equipment. The extraction of the respiratory frequency is divided into non-contact measurement and contact measurement. Non-contact measuring comprises using ultrasonic, radar, etc., can achieve high degree of breathing depth and breathing frequency monitoring, but can only be used in the case where the subject is stationary. Contact measurement uses a carbon dioxide sensor, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to realize the real-time and high-precision measurement of human breathing depth and breathing frequency, and solve the problem that the current breathing frequency measurement lacks real-time performance, and the error is large in the state of exercise, and the lack of breathing depth measurement equipment and methods

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