基于表面肌电信号及视距的儿童作业状态下跪式坐姿分析  

Analysis of kneeling sitting of children in the working state based on surface electromyography and visual distance

作　　者：王斯秋 王生泽[1] 唐智[1,2] 姜鑫玉 陈晓燕[1] 王倩 鲍文岚 WANG Siqiu;WANG Shengze;TANG Zhi;JIANG Xinyu;CHEN Xiaoyan;WANG Qian;BAO Wenlan(College of Mechanical Engineering,Donghua University,Shanghai 201620,China;Engineering Research Center of Advanced Textile Machinery,Ministry of Education,Donghua University,Shanghai 201620,China;Department of Pediatrics,Shanghai General Hospital,Shanghai 200080,China)

机构地区：[1]东华大学机械工程学院,上海201620 [2]东华大学纺织装备教育部工程研究中心,上海201620 [3]上海市第一人民医院儿内科,上海200080

出　　处：《东华大学学报（自然科学版）》2022年第3期63-68,74,共7页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金项目(51775106)。

摘　　要：对比分析跪式坐姿和普通坐姿下儿童的视距及舒适度,研究采用跪式坐姿控制儿童作业状态下视距的有效性及坐姿舒适度。使用非接触式摄像法测量视距,利用表面肌电(sEMG)信号和主观评价相结合的方法评估坐姿舒适度。结果表明:为期60 min的写作业状态中,跪式坐姿组的视距比普通坐姿组长16.49%;跪式坐姿组竖脊肌和腓肠肌的肌电积分(I_(EMG))均值比普通坐姿组分别高45.91%和12.67%。结合坐姿舒适度主观评价量表分析可知,在60 min坐姿试验中,儿童使用跪式坐姿整体疲劳度更高。由此可见,使用跪式坐姿可以帮助儿童增加视距预防近视,但是在跪式座椅设计时应同时考虑儿童坐姿舒适度。The effectiveness of the kneeling sitting in controlling children's visual distance and sitting comfort in the working posture was studied by comparing the visual distance and comfort of children in the kneeling sitting and the normal sitting posture.A non-contact camera method was used to measure the visual distance,and a combination of surface electromyography(sEMG)signal and subjective evaluation was used to assess the sitting comfort level.The results show that the visual distance of the kneeling sitting group is 16.49%higher than that of the normal sitting group during the 60-minute writing session,and the mean values of integral electromyography(I_(EMG))of the erector spinae and gastrocnemius muscles are 45.91%and 12.67%higher,respectively,in the kneeling sitting group than in the normal sitting group.Combined with the analysis of the subjective evaluation scale of sitting comfort,it is clear that the overall fatigue of children using the kneeling sitting posture was higher in the 60 min sitting test.It shows that the use of kneeling sitting can help children to increase the visual distance to prevent myopia,but the comfort of children sitting should be considered when designing the kneeling seat.

关 键 词：跪式坐姿 表面肌电信号 视距 儿童 坐姿舒适度 

分 类 号：TB18[一般工业技术]