Ankle joint angle measuring system

Abstract

The invention discloses an ankle joint angle measuring system. The system comprises a power supply module, a double-freedom-degree angle sensor, a signal processing module, a signal acquiring module having wireless transmission function, a wireless receiving module and a PC treatment display module, wherein the double-freedom-degree angle sensor is mounted on two interconnected length-adjustable flexible bandages and can be calibrated by a sensor calibrating template. The ankle joint angle measuring system disclosed by the invention can be used for precisely measuring the position of an ankle joint in a space so as to show the angle of dorsal flexure, plantar flexure, introversion and extroversion of the ankle joint according to the size of an electric signal in two freedom degrees; the angle is analyzed to obtain the motion condition of the ankle joint or the ankle joint is subjected to function diagnosis and recovery assessment. The ankle joint angle measuring system is not limited by using environment, can be used for measuring the dynamic angle of the ankle joint of a human boy during a walking process, can also be used for measuring the static angle of the ankle joint of a bedridden patient and is simple in structure, convenient and comfortable to use and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering, in particular to an ankle joint angle measurement system. Background technique [0002] The human ankle joint can move in two degrees of freedom, the sagittal plane and the horizontal plane. The movement in the sagittal plane is called dorsiflexion and plantarflexion, and the movement in the horizontal plane is called varus and valgus. Taking the position of the ankle joint when the human body is standing normally as the zero point, the upward flexion of the instep is called dorsiflexion, the downward flexion is called plantar flexion, the inward turning of the body is called varus, and the lateral turning of the body is called valgus. The angle of the ankle joint can reflect the movement status of the ankle joint and play an important role in the real-time control of various lower limb assisting systems; it can also be used for the evaluation of the rehabilitation function of the ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are not many devices and systems for ankle angle measurement at home and abroad, and most of them have complex structures and are designed with hard materials, which are inconvenient to use and have poor affinity.

Especially for patients with inconvenient mobility, most of the devices cannot be used on the hospital bed, the limitations of use are very large, and it is impossible to complete the measurement of the ankle joint angle conveniently, quickly and accurately

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