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A motion unit extraction method for dynamic muscle contraction

A technology of dynamic contraction and extraction method, applied in sports accessories, testing muscle strength, muscle training equipment, etc., can solve problems such as difficult to handle dynamic muscle contraction, and achieve the effect of improving accuracy

Active Publication Date: 2022-04-05
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods achieve good results for static muscle contraction, and are difficult to deal with dynamic muscle contraction. In general, multi-channel surface electromyography signal processing is still in the exploratory stage, which is one of the difficulties in the field of electromyography research.

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  • A motion unit extraction method for dynamic muscle contraction
  • A motion unit extraction method for dynamic muscle contraction
  • A motion unit extraction method for dynamic muscle contraction

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings, and those skilled in the art can easily realize the content disclosed in this specification.

[0020] like figure 1 Shown is a flow chart of the present invention. A method for extracting motor units of muscle dynamic contraction is characterized in that it comprises the following steps:

[0021] Step 1: Collect multi-channel surface EMG signals under dynamic muscle contraction, filter the signals to weaken interference, and record changes in muscle force at the same time. Since the sEMG signal contains various interference signals, the preprocessing first needs to use a band-pass filter to retain the 10Hz--500Hz frequency band signal, and then use a notch filter to filter out the 50Hz power frequency interference.

[0022] Step 2: According to the monotonous increase and decrease of muscle force, the surface electromyography signal is segmented, and the corr...

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Abstract

The invention provides a method for extracting motor units of muscle dynamic contraction. Firstly, multi-channel surface electromyography signals and muscle force signals are collected simultaneously, and then the multi-channel surface electromyography signals are processed according to the increase and decrease of muscle force during dynamic muscle contraction. Segmentation, and finally design the muscle dynamic contraction function and extract the muscle movement unit. Since the release of muscle motor units is greatly affected by muscle force, the slope of muscle force change is introduced into the muscle dynamic contraction function, which effectively improves the accuracy of motor unit extraction. The invention is simple to realize and meets the requirement of practical application.

Description

technical field [0001] The invention relates to a method for extracting motion units of muscle dynamic contraction. Background technique [0002] Surface EMG (sEMG) is the use of surface electrodes to detect electromyographic signals from the surface of the human body. Clinically, multi-channel sEMG can comprehensively understand the functional state of neuromuscular. At present, the analysis and processing of sEMG signals is mainly aimed at the surface electromyographic signal of muscle static contraction, and there are very few studies on muscle dynamic contraction. The present invention is aimed at muscle dynamic contraction and proposes a motor unit (Motor Unit, MU) extraction method. [0003] The multi-channel sEMG signal decomposition methods studied by scholars at home and abroad mainly include: K-means clustering algorithm, template matching method, artificial neural network (ANN) algorithm, real-time linear aliasing blind signal separation algorithm, independent co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/389A61B5/397A61B5/22A61B5/00
CPCA61B5/227A61B5/7207A61B5/389
Inventor 何金保安鹏胡庆波骆再飞
Owner NINGBO UNIVERSITY OF TECHNOLOGY