电磁式盲文点显器的硬件电路设计与实现  

Hardware Circuit Design and Realization for Electromagnetic Refreshable Braille Display

作　　者：敖发祥 高金凤[1] 杨文珍[1] 吴新丽[1] 赵维 AO Faxiang;GAO Jinfeng;YANG Wenzhen;WU Xinli;ZHAO Wei(School of Mechanical Engineering ＆ Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学机械与自动控制学院,浙江杭州310018

出　　处：《成组技术与生产现代化》2018年第2期28-33,53,共7页Group Technology & Production Modernization

基　　金：国家自然科学基金重点资助项目(61332017);国家重点研发计划资助项目(2017YFB1002803)

摘　　要：研制一种电磁式盲文点显器的硬件电路,包括输入模块和输出模块两部分.硬件电路的输入模块由降压电路、按键电路、外部存储电路、SD卡存储电路和一键下载电路组成;硬件电路的输出模块由液晶显示电路、120路功率放大电路和语音播报电路组成.实验结果表明,此硬件电路能够精确且实时地驱动120个盲文点,动态生成盲文字符,供盲人指尖阅读盲文.实验验证了硬件电路的正确性、稳定性和可靠性.The hardware circuit is the basement of the refreshable braille display control system, and is the core component for dynamic braille generation. We develop a hardware circuit of the electromagnetic the refreshable brailledisplay, which includes two parts： input module and output module. The input module of the hardware circuit is composed of a depressurization circuit, a key circuit, an external storage circuit, a SD card storage circuit and a one button downloading circuit. The output module of the hardware circuit consists of a liquid crystal display circuit, a 120 dot matrix drive circuit and a voice broadcast circuit. The experimental results show that this hardware circuit can accurately drive 120 braille contact points in real time, dynamically gen crate braille characters, for the blind to read braille with their fingertips, These verify the correctness, stability and reliability of this hardware circuit.

关 键 词：盲文点显器 硬件电路 盲文显示 盲人 

分 类 号：TP202.1[自动化与计算机技术—检测技术与自动化装置]