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Fall detecting and locating method and device

A positioning method and positioning module technology, applied in the direction of alarms, instruments, etc., can solve the problems of inaccurate detection of human falls, and achieve the effects of high accuracy, improved accuracy, and reduced misjudgment rate.

Active Publication Date: 2016-02-17
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the inaccurate detection of human body falls in the prior art, thereby providing a fall detection and positioning method and device

Method used

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  • Fall detecting and locating method and device
  • Fall detecting and locating method and device

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Experimental program
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Effect test

Embodiment 1

[0049] Such as figure 1 As shown, this embodiment provides a fall detection and positioning method, which may include:

[0050] S1: Obtain the resultant acceleration of the human body, and judge whether the resultant acceleration is greater than the first threshold, if yes, go to step S2; if not, continue to execute step S1. Among them, the numerical value of the combined acceleration of the human body indicates the size of the impact force received by the human body, that is, the exercise intensity of the human body. The larger the value, the greater the impact force received by the human body. The difference between the total acceleration SVM of human daily life and the total acceleration SVM of falling is used to judge the first level of falling, that is, the value of the total acceleration SVM of daily life is the size of the first threshold. The combined acceleration SVM of running in daily life is generally less than 2.5g; the combined acceleration SVM of walking is gen...

Embodiment 2

[0066] Such as Figure 4 As shown, this embodiment provides a fall detection and positioning device. Since the acceleration that can best reflect the posture of the human body is the waist and neck, but it is not convenient to wear the device on the neck, the provided in this embodiment The device should preferably be worn on the waist of an elderly person. The device can include:

[0067] The positioning module 1 is used for locating the current position information. As a specific implementation manner, the positioning module 1 can be realized by using a GPS positioning module and / or a Beidou positioning module in the prior art, which will not be described in detail here.

[0068] The control module 2 is used to determine whether the human body has fallen according to the method described in Embodiment 1; when it is determined that the human body has fallen, delay the preset time to retrieve the current position information from the positioning module 1 and send it to the c...

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Abstract

The invention provides a fall detecting and locating method and device. The fall detecting and locating method comprises the following steps: acquiring resultant acceleration speed of a human body, and judging that whether the resultant acceleration speed is higher than a first threshold value or not; if the resultant acceleration speed is higher than the first threshold value, acquiring a human motion state change intensity value according to the resultant acceleration speed, and judging that whether the motion state change intensity value is higher than a second threshold value or not; if the motion state change intensity value is higher than the second threshold value, delaying for preset time, acquiring an attitude angle of the human body, and judging that whether the attitude angle of the human body is higher than a third threshold value or not; and if the attitude angle of the human body is higher than the third threshold value, determining that the human body falls down. The fall detecting and locating method and device have the advantages that accuracy of a result, namely whether the human body falls down, obtained through three-stage judgement is high, interference of multiple normal motion states is eliminated, each judgement stage is independently carried out, and the next judgement stage can be carried out only under the condition that the human body is judged to possibly fall down in the previous judgement stage, so that system accuracy can be improved, an algorithm is also greatly simplified, and instantaneity is improved.

Description

technical field [0001] The invention relates to the field of behavior analysis and recognition methods, in particular to a fall detection and positioning method and device. Background technique [0002] With the advancement of social medical care and the improvement of living conditions, human life expectancy is getting longer and the number of elderly people is increasing, and the issue of providing for the elderly has attracted more and more attention. At present, there are more and more incidents in which many old people accidentally fall when they go out alone and cause disability and death. The reason is that the old people cannot get timely assistance after they fall. Therefore design a kind of method and equipment that can in time find that the old man falls and notify the designated personnel to rescue it and its importance. [0003] In the prior art, human body fall detection is generally divided into two types based on vision and based on wearable sensors in terms...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/04
CPCG08B21/043G08B21/0446
Inventor 李言胜王亚坤廖虎
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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