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Non-contact real-time bed leaving monitoring method

A real-time monitoring, non-contact technology, applied in character and pattern recognition, diagnostic recording/measurement, image data processing, etc., can solve the problems of short life, high false alarm rate, low anti-interference, etc., to improve accuracy , The effect of reducing the false alarm rate and wide application range

Active Publication Date: 2020-08-25
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of short life, low anti-interference and high false alarm rate in the prior art, and provide a new real-time breathing monitoring method for non-contact equipment

Method used

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  • Non-contact real-time bed leaving monitoring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A non-contact real-time monitoring method for leaving the bed in the present invention, comprising the following steps:

[0046] S1. Use the millimeter-wave radar to collect electromagnetic echo data in real time, and monitor the movement and direction of the object in real time according to the change of the echo;

[0047] S2. Use the depth camera to collect real-time images, and calculate the position and individual biological characteristics of the monitored object based on the visual analysis algorithm;

[0048] S3. Based on the analysis results of step S1 and the algorithm results of the method in step S2, data fusion is performed to improve the accuracy of monitoring object identification, monitor the time of getting out of bed and give an alarm for accidental risks.

[0049] In step S1, the echo is converted into complex original data through AD, and converted into a three-dimensional complex array S(i,j,k,t) of azimuth-elevation-distance after three-dimensional ...

Embodiment 2

[0069] Such as figure 1 , a hardware system that adopts the non-contact real-time monitoring method for leaving the bed in the first embodiment, the hardware system 1 includes a millimeter wave radar, a depth camera and a wifi module, the millimeter wave radar communicates with the wifi module, and the camera communicates with the wifi module connect. Millimeter wave radar is a radar that works in the millimeter wave band (millimeter wave) detection. Usually millimeter wave refers to the 30-300GHz frequency domain (wavelength 1-10mm).

[0070] The wifi module connects to the Internet to communicate with the server, and the server sends an alarm prompt to the alarm prompt mobile phone bound to the system after receiving the alarm signal sent by the wifi module.

[0071] Such as figure 2 , the hardware system is installed at the end of the bed through the adjustable bracket 2 and is higher than the bed surface. The part where the adjustable bracket connects to the end of the...

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Abstract

The invention discloses a non-contact real-time bed leaving monitoring method. The non-contact real-time bed leaving monitoring method comprises the following steps of S1 acquiring electromagnetic echo data in real time by a millimeter-wave radar, and according to the change of echo, monitoring the movement and movement direction of an object in real time; S2 acquiring real-time images by a depthcamera, and based on a visual analysis algorithm, calculating the position and individual organism characteristics of the monitoring object; and S3 performing data fusion based on the above two stepsto improve the identifying accuracy of the monitoring object, monitoring bed leaving time and giving an alarm for accident risks. Through the adoption of the non-contact real-time bed leaving monitoring method disclosed by the invention, the in-bed state of a user in nighttime can be monitored in real time, and the alarm can be given for abnormal situation that the bed leaving time is too long; and the non-contact real-time bed leaving monitoring method is convenient to use, can perform real-time monitoring and giving the alarm for bed leaving abnormal risks of the user in nighttime, and has high reliability and good popularization prospects.

Description

technical field [0001] The invention belongs to the field of non-contact sensors, in particular to a non-contact real-time monitoring method for getting out of bed. Background technique [0002] In nursing institutions such as hospitals, social welfare institutions, psychiatric hospitals, elderly care centers, or families, patients, the elderly, and disabled people often fall off the bed at night or have accidents after leaving the bed. The injuries caused by accidents such as falls It is very easy to cause serious or even fatal injuries to the elderly or patients. If abnormalities are not detected in time and necessary rescue measures are implemented in time, it is likely to cause irreversible adverse effects on the elderly or patients and even seriously threaten their lives. Not only in nursing institutions, but also in families with children, there are often accidents where the child falls off the bed during sleep at night and cannot be detected in time. Because the child...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/11A61B5/00G06K9/00G06T7/70
CPCA61B5/1115A61B5/746A61B5/7264A61B5/7465G06T7/70G06T2207/30201G06T2207/20084G06T2207/30232G06V40/16G06V20/52
Inventor 刘涛翟潜林鹏翔韩梅梅
Owner ZHEJIANG UNIV
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