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Vital sign extraction algorithm based on piezoelectric film sensor and system thereof

A piezoelectric film and vital sign technology, applied in the field of intelligent sensing, can solve problems such as the inability to detect body motion signals, the inability to exclude the influence of body motion signal heart rate and respiration rate calculation results, etc.

Inactive Publication Date: 2021-06-25
青岛中物云传智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention cannot detect body motion signals, and cannot rule out the influence of heart rate and respiration rate calculation results caused by body motion signals

Method used

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  • Vital sign extraction algorithm based on piezoelectric film sensor and system thereof
  • Vital sign extraction algorithm based on piezoelectric film sensor and system thereof
  • Vital sign extraction algorithm based on piezoelectric film sensor and system thereof

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Embodiment Construction

[0027] In the design of the present invention, "piezoelectric film" is used as a sensor, which is placed under the chest of the human body during sleep, or implanted on smart clothing. The sensor is matched with the back-end processing circuit, the vital sign recognition algorithm designed in the present invention, and the smart device terminal, which can detect the user's vital sign signal, figure 1 It is a flow chart of the whole system of the sleep monitoring system involved in the present invention.

[0028] In the above-mentioned sleep monitoring system, the present invention is mainly aimed at using algorithms to analyze various human body signals and carry out statistics, and does not explain the sensor acquisition level, hardware processing circuit level, and smart device end. The algorithm implementation process is described in detail below .

[0029] In the hardware circuit processing, the signal of the sensor has been amplified and initially filtered to a certain e...

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Abstract

The invention relates to a vital sign extraction algorithm based on a piezoelectric film sensor technology, which is characterized by comprising the following steps of: amplifying and filtering measured original heartbeat and respiration signals mixed with body movement signals; dividing the obtained signals into heartbeat, breathing and body movement signals; finding out a peak point in the data, and solving the corresponding heart rate and respiration rate. According to the algorithm, a heartbeat signal is separated from a breathing signal and a body movement signal by utilizing a signal, collected by a piezoelectric film, of a human body during sleep, so that an MCU can conveniently obtain vital sign parameters of a user during sleep. By adopting the compensation algorithm, the heart rate and the breath which are not collected can be compensated, so that the calculation result is more accurate.

Description

technical field [0001] The invention relates to the field of intelligent sensing, in particular to an algorithm and system for real-time and accurate measurement of heart rate and respiration rate. Background technique [0002] With the vigorous development of the Internet of Things technology in China, products related to the Internet of Things have gradually entered people's sight. With the development and progress of flexible electronic materials, smart sensor components, low-power processors, communication technologies and signal processing methods, medical testing instruments are developing in the direction of more accurate, miniaturized, networked, and low-cost. Piezoelectric film is an example of a sensor widely used in medical instruments. The sleep monitoring system based on the piezoelectric film can monitor the physiological characteristics such as heart rate, respiration rate and body movement of the test subject lying on the bed covered with sensors in the slee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/0205
CPCA61B5/4806A61B5/0205A61B5/7225A61B5/7203A61B5/6891
Inventor 赵兵李宁阳韩振中台冬雪李文婷刘雅倩
Owner 青岛中物云传智能科技有限公司
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