不同键盘、输入速度的sEMG、绩效及舒适性比较  

Comparison of Surface EMG,Performance and Subjective Comfort while Using Different Typing Speed Operating on Different Keyboards

作　　者：朱伟[1,2] 张智君[1] 

机构地区：[1]浙江大学心理与行为科学系,杭州310028 [2]浙江水利水电专科学校,杭州310018

出　　处：《人类工效学》2010年第3期1-4,共4页Chinese Journal of Ergonomics

摘　　要：目的:检测不同键盘和不同打字速度对键盘输入过程中前臂sEMG、打字质量以及主观舒适性的影响。方法:采用双电极法记录被试者在实验过程中的前臂屈肌和展肌sEMG,取特征值AEMG,分析其在不同键盘及打字速度等级上的变化,并同时比较打字绩效和主观舒适性上的差异。结果:屈肌sEMG在不同键盘主效应上存在显著差异;展肌sEMG的各种效应均不显著;在主观舒适性评价上,对手腕的评价存在显著差异,使用Acer工效键盘时手腕的舒适度优于使用普通DELL键盘,其余差异则均不显著。结论:使用工效键盘有利于降低屈肌肌肉负荷,提高主观舒适性。Investigated forearm flexor and extensor sEMG、typing quality and subjective evaluation while using different keyboards and different typing speed.Method：Comparison of electromyography signals recorded from electrodes on the forearm flexor and extensor,we tested whether there were prominence differences between different keyboards and different typing speed with AEMG.And also compared the differences of the performance and subjective evaluation.Result：For flexor,the main effect was prominence between different keyboards.But for extensor,all effect were not prominence.There were prominence differences in subjective evaluation about wrist and there were no prominence differences in other body parts.Uses when the Acer effect keyboard the skill comfort level surpasses the use ordinary DELL keyboard,other differences did not demonstrate.Conclusion：It was better to reduce the workload of the flexor,to improve the subjective comfort while using work efficiency keyboard.

关 键 词：表面肌电信号 舒适性 工效键盘 

分 类 号：B849[哲学宗教—应用心理学] TB18[哲学宗教—心理学]