Multichannel functional electrical stimulation method and multichannel functional electrical stimulation system in muscle synergy mode

Abstract

The invention discloses a multichannel functional electrical stimulation method and a multichannel functional electrical stimulation system in a muscle synergy mode. The method comprises the following steps: S1, myoelectric signals of all muscle groups in a joint motion range are acquired and pretreated, and multi-muscle group myoelectric signals are obtained; S2, non- negative matrix factorization is carried out on the multi-muscle group myoelectric signals, and a muscle group synergy mode matrix and a feature time sequence vector are obtained; S3, each element in the muscle group synergy mode matrix is divided by the sum of elements of the column where the element is, and a normalized solution is obtained; S4, multichannel electrical stimulation parameter proportion is carried out; and S5, according to the multichannel electrical stimulation parameter proportion result, electrical stimulation is carried out. According to the multichannel functional electrical stimulation method and the multichannel functional electrical stimulation system in the muscle synergy mode, the fact that the current multifunctional electrical stimulation system lacks a stimulation mode by using a human body muscle group natural synergy mode is improved, and the global muscle fatigue degree is reduced.

Description

technical field [0001] The invention relates to a multi-channel functional electrical stimulation method and system in a muscle synergy mode. Background technique [0002] Most of the current multi-channel functional electrical stimulation training systems do not consider the natural contraction mode of the muscle group itself, and its pulse number adjustment method largely depends on experience, lacks the integration of muscle synergy information, and has the following defects : [0003] (1) The multi-channel parameter adjustment lacks the muscle synergy mode information obtained from the decomposition of EMG signals, and the adjustment is not carried out according to the natural mode of normal human muscles. [0004] (2) The torque value generated by electrical stimulation is not stable enough. [0005] (3) It is not possible to switch electrical stimulation channels according to the motion state of the joints, which may easily cause excessive fatigue of muscle groups. ...

AI Technical Summary

Problems solved by technology

[0002] Most of the current multi-channel functional electrical stimulation training systems do not consider the natural contraction mode of the muscle group itself, and its pulse number adjustment method largely depends on experience, lacks the integration of muscle synergy information, and has the following defects :

[0003] (1) The multi-channel parameter adjustment lacks the muscle synergy mode information obtained from the decomposition of EMG signals, and the adjustment is not carried out according to the natural mode of normal human muscles

[0004] (2) The torque value generated by electrical stimulation is not stable enough

[0005] (3) It is not possible to switch electrical stimulation channels according to the movement state of the joints, which may easily cause excessive fatigue of the muscle groups

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