Piezoelectric matrix active monitoring device for gait and its working method

Abstract

The present invention proposes a piezoelectric matrix active monitoring gait device and its working method, comprising: a hollow sole and a piezoelectric matrix active monitoring gait module group arranged in the cavity of the hollow sole; the piezoelectric matrix active monitoring The gait module group includes starting active monitoring device, connected active vibration generating device and monitoring matrix, and a microprocessor module; said starting active monitoring device includes a contact switch installed on the top of the heel position of the cavity; The active vibration generating device includes a high-frequency voltage generating circuit; the monitoring matrix includes a longitudinal piezoelectric group and a transverse piezoelectric group with gaps in the vertical direction; the active monitoring device, the active vibration generating device and the monitoring matrix are respectively connected Microprocessor module. It uses low-cost piezoelectric ceramics as a sensing device, and achieves relatively high detection accuracy under the condition of using fewer sensors and lower costs.

Description

technical field [0001] The invention relates to the field of gait monitoring, in particular to a piezoelectric matrix active monitoring gait device and a working method thereof. Background technique [0002] There is a contradiction in the field of gait monitoring. If the gait measurement needs to be relatively accurate, the sensors need to be measured with high precision and a large number, which leads to high cost; This leads to a large error in the gait test. [0003] At present, the more accurate solution for gait monitoring is to monitor gait using the method of EMG signal, such as "Gait Recognition Method of EMG Signal Based on Particle Swarm Optimization-Support Vector Machine:, CN104107042A[P]. 2014.", or Using vision to monitor gait "Gait recognition method based on fully corrected Boosting and subspace learning algorithm:, CN107103296A[P]. ]. 2017." etc., or install sensors on the body to monitor gait, such as "Anonymous. A method of gait recognition based on ine...

AI Technical Summary

Problems solved by technology

These solutions have the problem of high cost

[0004] Or a lower-cost method is to install sensors on the sole of the shoe to monitor gait, such as "A Wearable Sole Pressure Acquisition Device for Prosthetic Control:, CN102670218A[P]. 2012." "An Auxiliary Screening Pa Abnormal Gait Recognition Method for Jinsen Syndrome:, CN104834888A[P]. 2015." There is also the problem of insufficient monitoring accuracy

[0005] In the existing technology, the sensor cost of the method of using the electromyography signal is high, and because the detection and generation of the electromyography are not only generated in the gait, there is a misjudgment; It can only be detected in the range that the visual sensor can detect, and is often used in rehabilitation hospitals; the sensor is installed on the body to detect gait, and its accuracy depends on the accuracy of the sensor and the location of the installation, and it depends on a more complex algorithm; the sensor is installed on the sole of the shoe Detect gait, the cost is low, and it is easy to carry and use, but its accuracy is low

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