Gait analysis system and method for calculating joint torque and angle by using inertial sensor

Abstract

The invention discloses a gait analysis system and method for calculating joint torque and angle by using an inertial sensor. The system comprises the inertial sensor and a calculation unit which are worn on a testee; the inertial sensor is used for measuring acceleration and gyroscope data, and the calculation unit uses a deep learning network to calculate a joint angle, a ground reaction force and a joint torque. Data are obtained through the inertial sensor worn on a testee, gait information such as ground reaction force, joint angles and joint torques can be calculated in real time by using technologies such as a deep neural network, and meanwhile the system has the advantages of being low in cost, high in precision, portable, efficient and the like and has wide application prospects. The gait characteristic of a testee can be conveniently analyzed, exercise evaluation is carried out, exercise training is guided, and therefore the method has good application prospects and economic benefits in the fields of medical rehabilitation, biomechanics, exercise science and the like.

Description

technical field [0001] The invention belongs to the field of smart wearable devices, and in particular relates to a gait analysis system and method for calculating joint moments and angles by using inertial sensors. Background technique [0002] Walking is the most basic movement of human beings. Walking postures can be divided into many types. By analyzing related kinematics data such as the force and posture of the human body during walking, the gait characteristics of the human body and various factors that affect the gait can be analyzed. The equipment used to analyze gait is called gait analysis system. The development of an accurate and efficient gait analysis system is of great significance in many aspects such as medical treatment, sports, and aerospace. [0003] The gait analysis system can obtain the physiological and pathological mechanical and mathematical parameters of the human body in various postures and movements, and detect various parts and functions of t...

AI Technical Summary

Problems solved by technology

However, this traditional analysis method has many drawbacks. Obtaining human kinematics data through a motion capture system requires multiple infrared cameras, so the cost is high

On the other hand, as an important device for obtaining ground reaction force data, the force plate is expensive and difficult to move, and cannot achieve long-term continuous monitoring, which limits the scope of application. Therefore, it is urgent to develop a portable gait analysis system

[0005] In view of the shortcomings of current gait analysis methods, some portable gait analysis systems have appeared on the market, but some systems can obtain low joint angle accuracy, and some systems cannot measure joint moments, which cannot fully meet the needs of gait analysis

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