Electromyographic signal collector, and electromyographic signal collecting method and system

Abstract

Embodiments of the invention provide an electromyographic signal collector, an electromyographic signal collecting method and an electromyographic signal collecting system. The electromyographic signal collector comprises a fabric electrode sensor, an analog front end and a control module, wherein the fabric electrode sensor comprises a plurality of fabric electrodes; the analog front end comprises a plurality of differential signal acquisition circuits and a drive circuit; each differential signal acquisition circuit comprises a front-end filter circuit; the fabric electrode sensor is connected with the front-end filter circuits; and the analog front end is connected with the control module. According to the invention, after the plurality of fabric electrodes included in the electromyographic signal collector contact with a human body, electromyographic signals are collected through the plurality of fabric electrodes and are processed through the analog front end so as to obtain output signals; and therefore, the electromyographic signal collector is portable, small, exquisite and easy to wear due to the fact that a fabric is adopted as a sensor for collecting the electromyographic signals, and the fabric electrode sensor makes good contact with the skin, is comfortable and can be washed with water.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a myoelectric signal collector, method and system. Background technique [0002] Surface electromyography (sEMG), which is the electrical signal accompanying muscle contraction, is an important method for non-invasive detection of muscle activity on the body surface. At present, in the existing surface electromyography acquisition technology field, the electrodes are mostly metal electrodes or gel electrodes. The quality of the contact between the electrodes and the human skin and the size of the contact impedance directly affect the quality of the surface electromyography signal acquisition. The metal electrode has good electrical conductivity, but the contact with the skin is not close, and it will move, resulting in an increase in the contact impedance, which directly affects the acquisition of high-quality signals, and the metal will cause skin scratches and allergies. T...

AI Technical Summary

Problems solved by technology

The metal electrode has good electrical conductivity, but the contact with the skin is not close, and it will move, resulting in an increase in the contact impedance, which directly affects the acquisition of high-quality signals, and the metal will cause skin scratches and allergies

The gel electrode has a good fit with the skin, but the gel electrode is a consumable, and it cannot be used again after it is used up, and it is easy to fall off after a long time

The size of the gel electrode is relatively large, so it is not suitable for a large number of electrodes to be attached to the arm

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