Method for judging falling state in action

Abstract

The invention relates to the technical field of health information, particularly to a method for judging a falling state in an action. The method comprises the following steps: detecting human body action state data through an acceleration sensor; wherein the data comprise x-axis acceleration ax, y-axis acceleration ay, z-axis acceleration az, x-axis angle x1, y-axis angle y1, z-axis angle z1 andtime information, calculating resultant acceleration smv, and sequentially carrying out angle judgment, acceleration judgment and time judgment to judge whether an object is in a falling state or not.The sensor is mounted in the center of the chest; the chest belongs to the central axis of a human body; the influence of left-right and front-back shaking can be reduced to a certain extent; in addition, contact with other parts of the body is little in the advancing process, the adverse effect of the device on walking of the elderly is effectively avoided, and normal behaviors and falling behaviors of the elderly can be judged with high accuracy by sequentially conducting angle judgment, acceleration judgment and time judgment. The method has important significance for promoting healthy life of the elderly.

Description

technical field [0001] The invention relates to the technical field of health information, in particular to a method for judging a fall state during an action. Background technique [0002] With the growth of age and the aging of the body, the life and health of people, especially the elderly, will be seriously affected, and falling is one of the "culprits". A fall is defined as a sudden, involuntary, involuntary change in position, falling onto the ground or a lower surface than the initial position. Falls are very common among the elderly, seriously affecting the health and independent living ability of the elderly, and causing psychological stress and fear in the elderly. Falls often cause great damage to the body of the elderly, and sometimes the consequences are even fatal for the elderly. According to statistics, 90% of hip fractures are caused by falls. Hip fractures mainly include femoral fractures and intertrochanteric fractures. In humans, the greater trochanter...

AI Technical Summary

Problems solved by technology

[0003] The current fall detection device, such as a fall sensing system disclosed in Chinese Patent Publication No. CN110313917A, mainly uses the sensing unit to sense the action, then stores the resulting sensing signal in the storage unit, and then passes the correction unit For the sensing signal, the physiological signal normalization method and the action signal normalization method are used to correct the sensing signal, and then the action recognition unit generates action distinction data based on the corrected sensing signal to distinguish different actions, and finally the identification unit according to The fall judgment threshold determines whether the user's action exceeds its fall judgment threshold and a fall occurs; and if it exceeds its fall judgment threshold to determine that a fall has occurred, its identification unit will immediately output a signal to the protective component and warning component Or one of the two, so as to provide the user with the effect of warning and protection immediately when the fall action occurs, but the system mainly relies on acceleration to judge the occurrence of the fall event, but the human body movement is very complicated, relying more The reliability of predicting falls with few or single human body motion posture information is not high. When the human body falls and cannot be judged, the protective effect will not be achieved. When the human body does not fall and makes a wrong judgment, it will inevitably bring people inconvenient

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