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Method for measuring respiratory rate and heart rate of human body based on ultra-wideband radar

An ultra-wideband radar, breathing rate technology, applied in the measurement of pulse rate/heart rate, diagnostic record/measurement, medical science, etc. good practical effect

Inactive Publication Date: 2018-09-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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AI Technical Summary

Problems solved by technology

The contact measurement method is difficult for infants and young children; for patients with large area burns and scalds, it is easy to cause secondary injury

Method used

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  • Method for measuring respiratory rate and heart rate of human body based on ultra-wideband radar
  • Method for measuring respiratory rate and heart rate of human body based on ultra-wideband radar
  • Method for measuring respiratory rate and heart rate of human body based on ultra-wideband radar

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Embodiment Construction

[0014] The present invention uses a Butterworth band-pass filter for band-pass filtering, Min-Max normalization method to enhance signal, Hanning window smoothing noise reduction, fast Fourier transform to obtain frequency domain signal, frequency domain signal amplitude calculation, etc. The signal processing method realizes the high-precision measurement of human life signals, has the characteristics of high efficiency and robustness, and does not increase the computational complexity at the same time. Implementation examples such as figure 1 As shown, the specific technical scheme is as follows:

[0015] A method for measuring human respiration rate and heart rate based on ultra-wideband radar, the method steps are as follows:

[0016] Step 1: Initialize the connection between the UWB radar and the host. Including clearing the cache, setting the parameters of the digital-to-analog converter, setting the antenna power, setting the down conversion switch, setting the sampli...

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Abstract

The invention relates to the fields of radar microwave signal processing technologies and life medicine, and in particular relates to a method for measuring the respiratory rate and the heart rate ofthe human body based on ultra-wideband radar. The technical key points of the scheme are as follows: the method comprises the following steps: S1, carrying out initialization on the ultra-wideband radar; S2, acquiring echo signals; S3, calculating the position information of the person according to the echo signals; S4, carrying out Butterworth band-pass filtering on one-dimensional time series signals in S3; S5, enhancing the signals by adopting a Min-Max normalization method; S6, smoothing the enhanced signals by adopting the Harming window; S7, carrying out fast discrete Fourier transform on the signals after smoothing processing; and S8, searching the peak values of the signals in the breathing zone and the heart rate zone, wherein the searched peak values are adopted as the parametersof respiration and heartbeat. The method is applicable to the non-contact measurement for respiration and heartbeat, can be applied to the special human body and environment, and has the relatively high precision and relatively low computation complexity.

Description

technical field [0001] The invention relates to radar microwave signal processing technology and the field of life medicine, in particular to a method for measuring human respiration rate and heart rate based on ultra-wideband radar. Background technique [0002] Physiological parameters such as breathing rate and heart rate are the most important physiological indicators for doctors to diagnose and treat heart rate variability, cardiopulmonary abnormalities and other related diseases. The common measurement methods of respiration rate and heart rate usually adopt contact means, such as pressure sensor method, respiratory induction plethysmography method, electrocardiogram and so on. The contact measurement method is difficult for patients such as infants and young children; it is easy to cause secondary injuries for patients with large area burns and scalds. With the advancement of science and technology, the non-contact measurement method based on ultra-wideband radar can...

Claims

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Application Information

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IPC IPC(8): A61B5/0205
CPCA61B5/0205A61B5/024A61B5/0816A61B5/725
Inventor 杨树鑫肖鹏王瑞锦杨雨沛李正胡枭
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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