用于盲人数字化阅读的指套式全锁止盲文显示装置  

Fingertip-Type Fully Locked Braille Display Device for Blind People’s Digital Reading

作　　者：张运杰 陈大鹏 陈旭[1,2,3] 方映平 陈庚 ZHANG Yunjie;CHEN Dapeng;CHEN Xu;FANG Yingping;CHEN Geng(School of Automation,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Province Engineering Research Center of Intelligent Meteorological Exploration Robot(C-IMER),Nanjing 210044,China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET),Nanjing 210044,China)

机构地区：[1]南京信息工程大学自动化学院,江苏南京210044 [2]江苏省智能气象探测机器人工程研究中心,江苏南京210044 [3]江苏省大气环境与装备技术协同创新中心,江苏南京210044

出　　处：《测控技术》2024年第4期35-43,49,共10页Measurement & Control Technology

基　　金：国家自然科学基金(62003169);江苏省自然科学基金青年基金(BK20200823);江苏省研究生科研与实践创新计划项目(SJCX22_0351,KYCX22_1202,SJCX22_0348)。

摘　　要：由于视力存在障碍且缺乏社会关注,盲人的阅读便利性问题一直没有得到很好的解决。针对已有盲文显示装置存在的锁止力小、能耗大等问题,开发了一种用于盲人数字化阅读的指套式全锁止盲文显示装置,并通过理论推导、有限元分析对其进行仿真和优化。该装置中的盲文点执行器依靠横梁结构进行全锁止,能够为用户提供足够的反馈力,提高了盲文点识别的准确率和阅读效率。性能测试结果表明,盲文点执行器平均上弹力为101.67 mN,锁止力为5 N以上,平均刷新频率为17.7 Hz,符合设计要求。用户实验结果表明,识别盲文点平均准确率达到94%,且用户主观评价较高。可以看出,该装置可以提高盲人数字化阅读水平,并为盲人便携地阅读数字文本提供了一种良好的途径。The problem of reading accessibility for blind people has not been well solved due to the visual impairment and lack of social attention.In view of he problems of low locking force and high energy consumption of existing Braille display devices,a fingertip-type fully locked Braille display device is developed for blind people's digital reading,and it is simulated and optimized through theoretical derivation and finite element analysis.The Braille dot actuator of this device relies on the crossbeam structure for full locking,which can provide sufficient feedback force for the users and improve the accuracy of Braille dot recognition and reading efficiency.The performance test results show that the average upper spring force of the Braille dot actuator is 101.67 mN,the locking force is more than 5 N,and the average refresh frequency is 17.7 Hz,which meets the design requirements.The experimental results show that the average accuracy of Braille dots recognition is 94%,and the subjective evaluation is high.It can be seen that the device can improve the level of blind people's digital reading,and provide a good way for the blind people to read digital text portable.

关 键 词：盲文显示装置 盲人数字化阅读 指套式装置 全锁止功能 电磁驱动 

分 类 号：TH7[机械工程—仪器科学与技术] TP391[机械工程—精密仪器及机械]