Fall early warning method, system and device and computer storage medium

Abstract

The invention discloses a fall early warning method, system and device and a computer storage medium, and the method comprises the steps: carrying out the filtering of a human body acceleration signal collected by an attitude sensor, carrying out the solving of a mapping matrix according to a mapping relation between a body coordinate system and a world coordinate system, and the Euler angles of three axes, and carrying out the early warning of fall. The resultant acceleration is obtained through the three-axis original acceleration signals to judge whether the human body weightlessness and the weightlessness degree, a threshold value is set to judge whether the human body weightlessness is normal or not, and then whether the human body is about to fall or not is judged so as to trigger a fall early warning signal. According to the fall early warning method, a large number of actions similar to fall behaviors in life can be effectively filtered out, so that the fall prediction false alarm rate is reduced, the accuracy is improved, and through real-time algorithm analysis and processing, good prediction can be realized before fall, and a fall early warning signal is sent out to inform an execution mechanism to perform timely fall protection and rescue.

Description

technical field [0001] The present invention relates to the technical field of fall warning, in particular to a fall warning method, system, equipment and computer storage medium. Background technique [0002] As the birth peak population in the middle of the 20th century gradually enters old age, it can be predicted that the early 21st century will be the fastest growing period of population aging in China. The travel and daily life of the elderly are getting more and more attention from the society, and the prevention of falls of the elderly is more concerned by the society. [0003] The traditional fall warning method based on acceleration signal and attitude angle has a high rate of false alarms, and the fall judgment is often achieved by setting the acceleration signal threshold and attitude angle threshold to achieve the purpose of early warning. However, the judgment method of this technical solution is rough. Although it can filter out some behaviors similar to fall...

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Problems solved by technology

[0004] Embodiments of the present invention provide a fall warning method, system, device, and computer storage medium, which are used to solve the problem of being unable to filter out a large number of actions similar to fall behaviors in life, which in turn leads to a high rate of false alarms and low accuracy of falls. question

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