發(fā)布時(shí)間：2018-11-20 10:05

【摘要】：視覺是人類感知并認(rèn)識(shí)外界的主要感覺通道,人類接受的外部信息中超過80%來自視覺。據(jù)世界衛(wèi)生組織(WHO)近兩次調(diào)查,2002年全球超過1.61億人視力受損,盲人約3700萬,而在2010年視力受損人數(shù)上升到2.85億,盲人約3900萬,其中我國盲人占20%[1],另據(jù)第二次全國殘疾人抽樣調(diào)查數(shù)據(jù)推算,2006年視力殘疾人數(shù)約1233萬,因此加快完善盲用輔助系統(tǒng)的開發(fā),是實(shí)現(xiàn)和諧社會(huì)的一項(xiàng)任重而道遠(yuǎn)的責(zé)任。本文是對(duì)虛擬現(xiàn)實(shí)中觸覺反饋機(jī)理的在盲用輔助系統(tǒng)中的一種研究應(yīng)用。綜合調(diào)研了國內(nèi)外盲用閱讀系統(tǒng)的研究現(xiàn)狀和產(chǎn)品應(yīng)用情況,設(shè)計(jì)開發(fā)了一套跨平臺(tái)可移植的盲用閱讀顯示系統(tǒng),特別對(duì)用于移動(dòng)終端的盲用閱讀系統(tǒng)做了深入設(shè)計(jì)分析,硬件平臺(tái)采用ALIENTEK公司出品的以STM32F103為主控芯片的精英開發(fā)板,涉及到外部通訊系統(tǒng)核心翻譯轉(zhuǎn)換進(jìn)行、電路系統(tǒng)結(jié)構(gòu)設(shè)計(jì)、熱設(shè)計(jì)和故障診斷等技術(shù)分析。首先,本文探討了盲文翻譯尤其是漢字盲文翻譯的機(jī)理及研究現(xiàn)狀,在此基礎(chǔ)上實(shí)現(xiàn)在PC端實(shí)現(xiàn)利用VisualStudio2015開發(fā)出一套移植性強(qiáng)的基于C語言的穩(wěn)定可靠漢盲翻譯系統(tǒng),該翻譯系統(tǒng)基于國內(nèi)普遍使用的現(xiàn)行盲文翻譯規(guī)則,并在主機(jī)上進(jìn)行了多個(gè)文本測驗(yàn)以及系統(tǒng)程序的性能資源分析以測試程序的執(zhí)行效果。其次,本文將該翻譯系統(tǒng)移植到以STM32為控制器,外接移動(dòng)存儲(chǔ)、觸覺點(diǎn)顯器、TFTLCD和TTS等輸入輸出模塊的多功能盲用閱讀系統(tǒng)上。首先運(yùn)用機(jī)電產(chǎn)品逆向設(shè)計(jì)方法,設(shè)計(jì)開發(fā)一種聽觸覺同步盲用閱讀終端裝置,并以此為目標(biāo)本體,設(shè)計(jì)并優(yōu)化整個(gè)控制系統(tǒng),包括接口通訊,控制電路設(shè)計(jì),芯片選型,外設(shè)驅(qū)動(dòng)開發(fā),人機(jī)交互界面,終端信息同步等項(xiàng)目,整個(gè)閱讀系統(tǒng)的軟件設(shè)計(jì)采用keil MDK5程序開發(fā)平臺(tái),電路板布局設(shè)計(jì)采用Altium公司的DXP硬件電路設(shè)計(jì)平臺(tái)。同時(shí)利用Proteus對(duì)該閱讀系統(tǒng)部分模塊進(jìn)行模擬仿真分析。在完成樣機(jī)制作、系統(tǒng)搭建、程序移植后,本文在此移動(dòng)端樣機(jī)上進(jìn)行了功能驗(yàn)證和硬件測試,包括SD卡識(shí)別,文本閱讀測試,多終端輸出的同步協(xié)調(diào)性測試,并對(duì)硬件電路進(jìn)行了熱力穩(wěn)定性分析,以及聽觸閱讀裝置響應(yīng)性分析。最后本文對(duì)所設(shè)計(jì)開發(fā)的盲用閱讀系統(tǒng)的一些問題進(jìn)行了探討分析,并由此提出了一些優(yōu)化和創(chuàng)新的設(shè)計(jì)方案,包括多國語言支持,功能集成,加工工藝,結(jié)構(gòu)優(yōu)化,從而加快盲用閱讀系統(tǒng)產(chǎn)品商用化,提高盲人受教育程度,推進(jìn)我國社會(huì)主義和諧進(jìn)程。
[Abstract]:Vision is the main sensory channel for people to perceive and understand the outside world. More than 80% of the external information received by humans comes from vision. According to the World Health Organization (WHO) nearly two surveys, in 2002, more than 161 million people worldwide were visually impaired and about 37 million were blind. However, in 2010, the number of people with visual impairment rose to 285 million, and the number of blind people rose to about 39 million, of which 20% were blind in China. In addition, according to the data of the second National sample Survey of the disabled, the number of people with visual disability in 2006 is about 12.33 million, so speeding up the development of blind auxiliary system is a heavy and long responsibility to realize a harmonious society. This paper is a research and application of tactile feedback mechanism in blind auxiliary system. In this paper, the current situation of blind reading system and its application at home and abroad are investigated, and a cross-platform portable blind reading display system is designed and developed, especially the blind reading system for mobile terminal is deeply designed and analyzed. The hardware platform adopts the elite development board with STM32F103 as the main control chip produced by ALIENTEK company, which involves the core translation and conversion of external communication system, the structure design of circuit system, the thermal design and the fault diagnosis and so on. First of all, this paper discusses the mechanism and research status of Braille translation, especially Chinese character Braille translation. On this basis, a stable and reliable Chinese-blind translation system based on C language is developed in PC and VisualStudio2015. The translation system is based on the current Braille translation rules which are widely used in China. Several text tests and performance resource analysis of the system program are carried out on the host computer to test the execution effect of the program. Secondly, the translation system is transplanted to a multifunctional blind reading system with STM32 controller, removable memory, tactile point display, TFTLCD and TTS modules. Firstly, a blind reading terminal device for hearing and tactile synchronization is designed and developed by using the reverse design method of electromechanical products, and the whole control system is designed and optimized, including interface communication, control circuit design, chip selection. The software design of the whole reading system adopts keil MDK5 program development platform, and the layout of circuit board is designed by DXP hardware circuit design platform of Altium company. At the same time, some modules of the reading system are simulated and analyzed by Proteus. After making the prototype, building the system and transplanting the program, this paper carries out the function verification and hardware test on the mobile terminal prototype, including SD card recognition, text reading test, synchronization coordination test of multi-terminal output, etc. The thermal stability of the hardware circuit and the response of the device are analyzed. Finally, some problems of blind reading system designed and developed are discussed and analyzed, and some optimized and innovative design schemes are put forward, including multi-country language support, function integration, processing technology, structure optimization. In order to speed up the commercialization of blind reading system products, improve the blind education level, promote the socialist harmonious process of our country.
【學(xué)位授予單位】：浙江理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP391.9;TN873

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