Portable wearable respiration monitoring device and monitoring method

Abstract

The invention discloses a portable wearable respiration monitoring device and a monitoring method. The monitoring device comprises a flexible respiration monitoring module, a sensing circuit module, a signal processing module and a wearable module. The flexible respiration monitoring module comprises a high-flexibility molecular curing material composed of a hydroxyl-rich natural polymer, a flexible polymer and a metal salt. The flexible respiration monitoring module is fixed below the nostrils of a monitored person through the wearable module, water molecules in gas exhaled by the human body are subjected to adsorption and desorption behaviors on the flexible polymer curing material, and under the action of an electric field, respiration behaviors are generated to respond to electrical parameter changes; the sensing circuit module collects electric signals output by the flexible respiration monitoring module and then outputs the electric signals to the signal processing module, multi-dimensional monitoring of the respiration frequency, the respiration intensity, the expiration and inspiration time ratio, the respiration fluctuation degree, the tidal volume, the abnormal respiration behavior and the like of a wearer is achieved, and the advantages of being accurate and reliable in monitoring result, high in monitoring sensitivity, low in cost and the like are achieved. And the use is convenient.

Description

technical field [0001] The invention relates to a portable and wearable breathing monitoring device and a monitoring method thereof, belonging to the technical field of physiological parameter monitoring. Background technique [0002] Breathing, as one of the physiological parameters, is an important vital sign that helps to understand a person's overall health. Respiratory rate and breathing pattern are also considered indicators of an individual's underlying health. Therefore, the respiratory rate sensor is particularly important. The respiratory rate sensor can reflect the breathing situation in real time, record the number of breaths per unit time and can display the current respiratory rate, which can help people grasp the breathing situation of the monitored person in real time, and timely take effective measures. Therefore, it is more and more important to monitor the relevant parameters such as people's respiratory rate in daily life. [0003] The common methods u...

AI Technical Summary

Problems solved by technology

[0013] In the U.S. patent US20170356899A1 "DETECTION GASES AND RESPIRATION BY THECONDUCTIVITY OF WATER WITHIN A POROUS SUBSTRATE SENSOR", the respiration sensor monitors the respiration through the change of the conductivity of the porous material in different humidity. Under certain conditions, the response current changes to the nanoampere level, the current is too small, it is difficult to monitor, and it is easy to be interfered by other external factors, so it can only judge whether the breathing has stopped, the depth of breathing, the irregular breathing, and the failure of exhalation by the size of the response value. Other parameters such as the ratio of time to inspiration are monitored

Chinese invention patent CN106725490A provides a humidity sensor and a breath detection system using the humidity sensor. It also quickly absorbs and desorbs water molecules through a loose porous structure, but the characteristic of absorbing water molecules through a porous structure makes the sensor vulnerable to excessive water molecules. Adsorption affects sensing performance including sensing accuracy, response speed, and long-term working stability

At the same time, the available respiratory parameters include respiratory frequency and respiratory intensity. The obtained parameters have a low dimension, and cannot realize multi-dimensional monitoring and recording of respiratory behavior, and cannot be used to establish an accurate and effective respiratory behavior database.

[0014] For devices that are in close contact with the airway of the human body, it is one of the requirements for safety and hygiene to be discarded after use. However, many devices for monitoring breathing in the prior art are complex in structure, expensive, and reusable, and their cleaning facilities are not complete. , not high enough purity, combined with reduced levels of patient immunity to bacteria and viruses, so contaminated reusable devices can easily cause cross-contamination between different patients

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