微阵列式表面肌电采集系统的设计  

Design of a Mini-Grid Surface Electromyography Acquisition System

作　　者：吕鹏宇 郭伟超 盛鑫军[1] 朱向阳[1] LV Pengyu;GUO Weichao;SHENG Xinjun;ZHU Xiangyang(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《传感技术学报》2020年第6期916-921,共6页Chinese Journal of Sensors and Actuators

基　　金：国家重点研发计划课题项目(2018YFB1307202);国家自然科学基金项目(91748119,51905339)。

摘　　要：表面肌电信号是用于人-机交互接口的重要信号源。然而现有的表面肌电信号采集系统面临着高密度和便携性、高信号质量与低制造成本之间的矛盾,高通量采集系统主要为桌面式分析仪器,难以满足实际交互应用的需求。本文通过优化设计,完成了微阵列式表面肌电信号采集系统。将4个采集通道和相应的信号调理电路集成在单颗传感器上,提高了系统的空间分辨率。整个系统可同时采集4枚传感器共计16通道的12位精度表面肌电信号,采样率可达5 kHz。相较于商业系统,其成本更低,体积更加小巧便携。Surface electromyography(sEMG)is now a widely used biosignal for the human-machine interface.However,the existing systems should face the contradiction between high density and portability,high signal quality and low manufacturing cost.The high-density systems are mainly desktop instrument,which is difficult to meet the needs of practical interactive applications.In this paper,we optimally designed mini-grid sensors and acquisition system to solve these problems.The sample channels are grouped by four and arrayed on a single sensor to improve the spatial resolution of the system.The system could synchronously collect 16 channels of sEMG signals at a resolution of 12-bits from 4 mini-grid sensors.Furthermore,the cost of the system is lower than the commercial systems and is more portable.

关 键 词：表面肌电信号 微阵列电极布置 主动式传感器 人-机接口 

分 类 号：TH789[机械工程—仪器科学与技术]