基于屈肌声肌图的假手控制初步研究  

Preliminary study of prosthetic control based on flexor sonomyography signal

作　　者：施俊[1] 常谦[1] 郭静宜[2] 郑永平[2] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]香港理工大学医疗科技及资讯学系

出　　处：《声学技术》2010年第5期484-488,共5页Technical Acoustics

基　　金：国家自然科学基金(60701021);上海市教委重点学科建设项目(发J50104);香港研究资助局(PolyU5331/06E)

摘　　要：医学超声成像是研究骨骼肌的结构形态变化特性的有效工具。通过自行开发的信号采集与控制软件,同步采集手腕屈伸时前臂屈肌的超声图像、表面肌电(Surface Electromyography,SEMG)信号以及手腕屈伸角度值。简单分析了屈肌厚度变化的声肌图(SMG)和表面肌电、手腕角度之间的关系,并初步实现了利用屈肌厚度变化SMG控制假手的张合。实验结果表明,肌肉厚度变化SMG具有控制假手的可行性。Medical ultrasound imaging is a useful tool to investigate the properties of architectural change of skeletal muscle.In this study,the ultrasound images and surface electromyography（SEMG） signals are synchronously sampled from the forearm flexor muscle with wrist angle during the process of wrist flexion-extension by a custom-developed sampling and control software.The relationships between flexor deformation SMG,SEMG and wrist angle are analyzed,and the open-close control of prosthetic hand driven by flexor deformation SMG has been preliminarily realized.The experimental results indicate the feasibility of using the muscle thickness deformation SMG to control prosthetic hand.

关 键 词：超声图像 声肌图 假手 表面肌电信号 手腕角度 

分 类 号：TB559[理学—物理]