Automatic detection method and system for human body falling-over

Abstract

An automatic detection method and a system for human body falling-over are based on a wireless network signal transmission technology. The method comprises the following steps: a wireless receiving terminal receives wireless signals from a wireless transmitting terminal and assesses channel state information; abnormity of the channel state information change is identified by using an abnormity detection algorithm; based on a one-class support vector machine which distinguishes a target motion kind from other motion kinds, an abnormity mode that a human body falling-over motion leads to a channel state information change is set as the target motion kind to determine whether a human body falling-over motion happens; if the human body falling-over motion happens, a falling-over alarm signal is emitted. The false alarm rate of the detection method provided by the invention is low; by utilizing a present wireless network and a device, other specific detection devices are not needed, and the detection method is high in universality; and at the same time people to be detected do not need to carry any extra sensing equipment, and inconvenience caused by that people to be detected carry detection equipment is avoided.

Description

technical field [0001] The invention relates to information processing technology, in particular to an automatic detection method and system for a human fall. Background technique [0002] Today, the world's population is in a unique and irreversible aging trend. As the main health threat of the elderly and the obstacle of living alone, unforeseen falls aggravate the pressure on the health and emergency services of the elderly. Therefore, we urgently need to find a convenient and effective method to automatically detect and respond to falls in the elderly. In order to realize accurate detection of actions, people have proposed detection methods using environmental equipment, vision or sensors. However, the detection systems built by these methods all have various deficiencies. In the fall detection system using surrounding environment equipment, specific equipment and instruments need to be installed in the environment where the person being detected is in advance, and th...

AI Technical Summary

Problems solved by technology

For example, the three-dimensional acceleration information of the user's upper torso is collected by the three-axis acceleration sensor of the mobile device, and the information is fused, and the impact on the human body and the inclination angle of the upper torso before and after the impact are combined to determine whether the human body has fallen. The detection of impact falls and tumble falls is still effective and has a high detection rate; however, using this method, the detected person needs to carry a mobile device, which still causes inconvenience

Another fall detection and positioning device is equipped with an inertial navigation module and a GPS module. The inertial navigation module is composed of a three-axis gyroscope, a three-axis magnetometer and a three-axis accelerometer. The fall detection and positioning device communicates with GSM / GPRS Bind the mobile phone and monitoring station of the relatives of the tested person to connect, and design a fall detection algorithm based on neural network and machine learning to accurately detect the fall status and location information of the human body, and can accurately detect the fall of the tested person status, and can track and locate it in real time, the system is convenient and practical, with high accuracy and strong stability; but it needs to be installed with specific professional equipment, which is costly and poor in popularity

Further, for a fall detection system that utilizes body-worn sensors or smartphones with apps installed, although fall detection can be performed without using other specific devices, the person being detected cannot guarantee to carry the sensor or mobile phone at all times. , and carrying the sensor will cause a certain degree of inconvenience to the life of the person being tested

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