Vital sign wireless monitoring method based on waveform design and reflected wave treatment

A technology of vital signs and reflected waves, which is applied in the measurement of pulse rate/heart rate, diagnostic recording/measurement, medical science, etc. It can solve the problems of simultaneous monitoring of multiple people and achieve good application prospects

Inactive Publication Date: 2019-02-12
DALIAN UNIV OF TECH
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Problems solved by technology

Although the above-mentioned devices can detect the vital signs of a single person, these devices hav

Method used

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  • Vital sign wireless monitoring method based on waveform design and reflected wave treatment
  • Vital sign wireless monitoring method based on waveform design and reflected wave treatment
  • Vital sign wireless monitoring method based on waveform design and reflected wave treatment

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Embodiment Construction

[0017] The specific implementation of the present invention will be described in detail below in conjunction with the technical solution and the drawings.

[0018] The embodiment is based on Infineon’s 24GHz FMCW radar chip BGT24MTR12 as a wireless transceiver, and based on Altera’s Cyclone II FFGA chip and ADI’s digital-to-analog conversion chip AD5542A for waveform design. Waveform design such as figure 1 As shown, Cyclone II and the digital-to-analog converter chip AD5542A are used to generate a triangle wave with a frequency of 100Hz and an amplitude of 3V, and the waveform is sent to the input terminal of the voltage controlled oscillator of the FMCW radar chip BGT24MTR12. The FMCW radar chip BGT24MTR12 will generate as figure 1 Shown is a wireless signal whose frequency varies linearly with the voltage at the input of the VCO. The FMCW radar chip BGT24MTR12 transmits the wireless signal through the antenna, and at the same time, receives the reflected wave from the human bod...

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Abstract

The invention provides a vital sign wireless monitoring method based on waveform design and reflected wave treatment, and belongs to the technical field of medical health and information. According tothe method, wireless monitoring equipment based on a reflected wave of a human body has the capacity of synchronously monitoring vital signs of a plurality of human bodies. The method utilizes changes of phase information of the reflected wave of the human body which are caused by heartbeat of the human body and the respiratory vital sign for dividing a difference frequency signal of the reflected wave and a transmitting wave into a short frame structure and a long frame structure by transmitting a wireless electric wave with the frequency changing with a triangular wave and extracting and analyzing change laws of initial phases of transmitting waves of different human bodies to estimate the heart rate and respiratory rate of each human body. According to the method, the signal treatmentsoft operation is conducted on existing wireless monitoring equipment to have the capacity of monitoring multiple people. The method has a good application prospect in the fields of medical monitoring, old people and child monitoring, health state monitoring and the like.

Description

Technical field [0001] The invention relates to a wireless monitoring method for vital signs based on waveform design and reflected wave processing, and belongs to the technical field of medical health and information. This method uses the changes in the phase information of the human body's reflected wave caused by the human heartbeat and respiratory vital signs, and estimates the heart rate and respiratory frequency of each human body by designing and controlling the emission waveform, as well as separating, extracting and analyzing the law of the reflected wave phase change. The present invention provides a new method for estimating human heart rate and respiratory frequency vital signs based on wireless reflected waves, and can significantly improve the performance of human vital signs monitoring equipment. Background technique [0002] Human vital signs monitoring has broad application prospects in the fields of medical monitoring, elderly and child monitoring. The current ...

Claims

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Application Information

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IPC IPC(8): A61B5/0205
CPCA61B5/0205A61B5/0026A61B5/024A61B5/0816A61B5/7257
Inventor 王洁高庆华
Owner DALIAN UNIV OF TECH
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