Non-contact through-wall life information detection method

A life information, non-contact technology, used in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as increased false alarm rate and reduced detection sensitivity, and achieve the effect of reducing impact and improving accuracy

Active Publication Date: 2021-07-13
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the radar-type life detection technology applies the principle of electromagnetic waves and is not affected by ambient temperature and environmental debris, it can better overcome the impact of laser and infrared detection on temperature and the failure of obstacles to block the detection sensitivity or increase the false alarm rate. The problem

Method used

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  • Non-contact through-wall life information detection method
  • Non-contact through-wall life information detection method
  • Non-contact through-wall life information detection method

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0048] figure 1 It is a method flow chart of an embodiment of a method for non-contact detection of vital information through a wall of the present application, as shown in figure 1 as shown, figure 1 Including:

[0049] 101. Denoise the target signal to be tested;

[0050] It should be noted that this application can remove the fixed background noise in the targ...

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Abstract

The invention discloses a non-contact through-wall life information detection method. The method comprises the following steps: denoising a to-be-detected target signal; adopting EEMD to process the de-noised signal in the fast time dimension direction of the to-be-detected target signal to obtain a first IMFs set; positioning feature time index sampling points in the first IMFs set; adopting EEMD to process the denoised signal of the target signal to be detected in the slow time dimension direction to obtain a second IMFs set of characteristic time index sampling points in the slow time dimension direction, and constructing a second IMFs set matrix; acquiring signals meeting respiratory rate characteristics and heart rate characteristics in the second IMFs set matrix, and finding corresponding respiratory signals and heart rate signals. According to the invention, the fixed background noise in the echo signal received by the radar can be removed, and the detection of life information can be realized by using the through-wall detection function and adopting non-contact detection.

Description

technical field [0001] The present application relates to the technical field of physiological information monitoring, in particular to a non-contact method for detecting vital information through a wall. Background technique [0002] At the level of judging personal health status, it is necessary to obtain certain vital sign information. The four main vital signs of the human body are body temperature (BT), heart rate (HR), respiratory rate (BR) and blood pressure (BP). According to different detection methods, the detection of human life information can be divided into contact detection and non-contact detection. Since contact detection requires direct or indirect contact between sensors or electrodes and the human body, this will bring constraints to the inspected personnel and is not suitable for long-term continuous vital sign monitoring. Secondly, such methods are widely used in medical environments such as infectious diseases In the life information detection and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/05A61B5/0205A61B5/00
CPCA61B5/05A61B5/7203
Inventor 蔡国发周拓林满桂宋扬蔡国恩许婕希叶钦勇张惠杰
Owner GUANGDONG UNIV OF TECH
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