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A method and device for detecting falls

A technology for detecting data and detection areas, which is applied in the field of fall detection, can solve problems such as missed judgments, system misjudgments, and acceleration changes are not obvious, and achieve the effect of convenient setting

Inactive Publication Date: 2019-01-29
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of system essentially detects dramatic changes in motion, and daily large-scale activities such as running, jumping, bending, etc. may cause system misjudgment
In addition, when the human body falls slightly, it may lead to missed judgments due to the insignificant change in acceleration.

Method used

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  • A method and device for detecting falls
  • A method and device for detecting falls
  • A method and device for detecting falls

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Experimental program
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Embodiment Construction

[0063] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0064] figure 1 is a flowchart of a method for detecting a fall according to an embodiment of the present invention. The process starts at step 101 . Then, in step 102, the signal strength of the test signal in the fall detection area is detected, and the unit is DB. Here, the detection of the test signal is realized by detecting the characteristic value, and the characteristic value may be signal strength, phase, or frequency, or other characteristic values ​​with distinguishing characteristics.

[0065] The test signal in the fall detection area is generated by the signal transmitter. In order to detect the fall of the target object in the fall detection area, the test signal generated by the signal transmitter needs to meet certain standards. A brief discussion of standards for test signals generated by signal transmitters is given here...

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Abstract

The invention discloses a method and device for detecting a tumble. The method comprises the following steps of: acquiring test signal intensity detected by signal receiver to obtain detection data; comparing the detection data with reference data to recognize a target object in tested area, wherein the reference data is detection data measured in advance when no target object exists in the tested area; comparing the currently detected target object with the previously recognized target object to determine whether the target object disappears; and determining that the first target object tumbles if yes. The device is easy to install and high in identification accuracy.

Description

technical field [0001] The invention relates to fall detection technology, in particular to a method and device for detecting human fall. Background technique [0002] As we all know, there is a demand for fall detection in many places, especially in the field of human fall detection. In today's society where the aging population is increasingly prominent, falls have become a public health problem that cannot be ignored. According to the World Health Organization, approximately 30% of people over the age of 65 fall once a year, and 15% fall twice or more. As of 2015, the number of elderly people in my country has exceeded 150 million, of which about 40 million elderly people will have a fall accident in a year. More than 50% of all falls occur at home. After the elderly fall, if they are not rescued in time, they will cause serious physical and psychological injuries, and even lead to death. Therefore, constructing an effective fall detection system, especially in a dome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B21/04
CPCG08B21/043G08B21/0446
Inventor 王国利黄开德郭雪梅罗育斌廖书真
Owner SUN YAT SEN UNIV