Wearing type dynamic real-time fall detection method and device

Abstract

The invention discloses a wearing type dynamic real-time fall detection method and device. The wearing type detection device comprises a specific hardware structure consisting of a foot part, a waist part, a wrist part and a back part. According to the dynamic real-time fall detection method, real-time judgment of the fall of human body in any state can be finished. The core algorithm of the detection device comprises a threshold opening logic structure caused by sudden change of gait acceleration, a human body posture dynamic stability judgment algorithm based on zero moment point (ZMP), and a fall mode identification algorithm based on a human body motion database. A complete dynamic real-time detection system is constructed, and the aims of wide application field, low dependence on the application environment and real-time detection are fulfilled. Moreover, the detection method and the detection device are high in accuracy, and have the advantages of low system cost, small system size and good convenience in wearing.

Description

technical field [0001] The invention relates to the field of sensing technology and digital signal processing technology, in particular to a wearable fall dynamic real-time detection method and device. Background technique [0002] MEMS inertial sensors are micro-electromechanical systems manufactured on single-crystal silicon wafers based on integrated circuit technology and micro-machining technology, including micro-accelerometers and micro-gyroscopes, which are the most important direction for the research and development of micro-electromechanical systems. one. The working principle of the micro-inertial navigation measurement combination composed of a three-dimensional accelerometer and a three-dimensional micro-gyroscope is Newton's law in classical mechanics, and its function is to measure moving objects (such as vehicles, aircraft, missiles, ships, artificial satellites, organisms, etc.) At the same time, the micro inertial measurement system has the advantages of ...

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Problems solved by technology

[0003] Although the principle of control and navigation based on micro-inertial navigation measurement system is simple, its measurement accuracy is difficult to improve. The main reasons can be attributed to three aspects: First, it is difficult to improve the manufacturing accuracy of micro-electromechanical inertial sensitive devices, especially high-depth Wide-ratio etching is prone to lateral erosion, which reduces the processing accuracy; second, the measurement signal of the device is easily interfered by other signal sources; There is still a lack of sufficient research on the performance of the device, which affects the mathematical modeling of the device, thereby affecting the effectiveness of device accuracy compensation

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