Distributed Wireless EMG Acquisition System for Synchronous High-Density Signal Capture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high-density surface electromyography acquisition technologies face challenges in achieving simultaneous wireless acquisition of multiple channels with high sampling frequency and synchronizability, while also being wearable and adaptable to complex motion environments.
Innovation Solution
A distributed wireless high-density surface electromyography synchronous acquisition system with a modular design, featuring high-density electromyography front-end acquisition control units, a base station unit, and a host computer, which enables real-time transmission and synchronization of high-quality electromyography data from up to 640 channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional wireless acquisition device is used, then wireless convenience is achieved, but the number of channels, sampling frequency and synchronizability cannot be simultaneously satisfied
Solution Approach 1:
The system divides the acquisition task into multiple independent front-end units, each equipped with its own electrode array and signal processing circuitry. Each front-end unit operates independently but synchronizes through wireless communication with the base station, enabling high channel count and sampling frequency while maintaining wireless convenience. The segmentation allows each unit to handle local signal acquisition without burdening a centralized system.
Solution Approach 2:
The base station unit acts as an intermediary between multiple front-end acquisition units and the host computer. It receives data from all front-ends via wireless communication, performs centralized processing, and ensures synchronous acquisition across all channels. This intermediary architecture enables the system to maintain high measurement precision while preserving wireless operation convenience.
2Measurement precision
If a high-density electromyography circuit is integrated, then acquisition quality is improved, but the device becomes bulky and difficult to wear
Solution Approach 1:
The system segments the acquisition circuitry into distributed front-end units, each containing only the necessary components for local signal acquisition. This eliminates the need for a single bulky integrated circuit while maintaining high acquisition quality through multiple distributed measurement points. Each front-end unit can be independently sized and optimized for wearability.
Solution Approach 2:
The electrode arrays and signal processing circuits are implemented on flexible substrates that can conform to the human body surface. This flexible film approach replaces rigid integrated circuits, enabling high-density measurement while maintaining thin-profile wearability and comfort during movement.
3Productivity
If multiple measurement points are measured simultaneously during human body motion, then comprehensive data is obtained, but the system complexity increases and human body adaptability decreases
Solution Approach 1:
The system uses multiple independent front-end units, each attached to different body parts or muscle groups. Each unit operates autonomously with its own electrode array and processing circuitry, enabling simultaneous measurement at multiple points without creating a single complex system. The modular architecture simplifies adaptation to different body locations and measurement scenarios.
Solution Approach 2:
Each front-end unit is designed as a universal module that can be applied to various body locations and measurement scenarios. The standardized interface and synchronized communication protocol enable the same basic unit to serve multiple measurement points during complex human body motions, maintaining adaptability while achieving comprehensive synchronous data collection.
Data Source
AI summary
The present invention belongs to the field of human-computer interaction, and discloses a distributed wireless high-density surface electromyography synchronous acquisition system, comprising high-density electromyography front-end acquisition control units, a base station unit and a host computer, wherein data is transmitted between the high-density electromyography front-end acquisition control units and the base station unit through a wireless system; each high-density electromyography front-end acquisition control unit comprises a high-density electromyography acquisition array, a reference electrode and a signal transmission module; the base station unit comprises a synchronization control module, a wireless routing module and a charging and discharging module; the host computer is a client computer program, which is loaded with a signal preprocessing and display module and a high-density electromyography decoding algorithm module; and information received from the base station unit is acquired and analyzed and results are displayed by a client.