本文選題：電子盲杖 + 嵌入式操作系統(tǒng)��； 參考：《北方工業(yè)大學(xué)》2013年碩士論文

【摘要】：目前隨著城市交通的日益發(fā)展,盲人以及視障人士的出行問題面臨著巨大的挑戰(zhàn),傳統(tǒng)的盲杖已經(jīng)遠(yuǎn)遠(yuǎn)不能滿足他們安全行走的需求。為此,種類繁多的現(xiàn)代化導(dǎo)盲設(shè)備逐步進(jìn)入盲人的生活,旨在有效改善盲人的行走能力以及生活質(zhì)量。但無論是傳統(tǒng)的盲杖還是電子導(dǎo)盲設(shè)備,都存在一定的局限性,尚無法為盲人提供全面和人性化的服務(wù)。因此,設(shè)計(jì)一款能有效輔助盲人安全行走,集定位導(dǎo)航、障礙物規(guī)避功能于一身的智能電子盲杖是十分迫切而且必要的。 該盲杖的設(shè)計(jì)主要基于ARM11-WindowsCE6.0的嵌入式開發(fā)平臺(tái),輔以GPS接收模塊以及超聲波測(cè)距模塊,可實(shí)現(xiàn)GPS實(shí)時(shí)定位、電子地圖查詢、軌跡記錄、實(shí)時(shí)導(dǎo)航以及超聲波探測(cè)障礙物等多種功能。實(shí)時(shí)導(dǎo)航功能又可分為地圖導(dǎo)航和軌跡拐點(diǎn)導(dǎo)航兩種模式,方便用戶根據(jù)不同情況進(jìn)行隨時(shí)的切換。其中軌跡導(dǎo)航模式是在軌跡拐點(diǎn)提取算法的基礎(chǔ)上提出的,也是本文的主要?jiǎng)?chuàng)新點(diǎn)。障礙規(guī)避功能則是利用超聲波測(cè)距的方式來檢測(cè)出障礙物的位置并發(fā)出預(yù)警,提示用戶及時(shí)避讓。在實(shí)際行走中,通過使用該盲杖并開啟相應(yīng)功能,盲人以及視障人士可以安全、便捷的到達(dá)預(yù)設(shè)的目地,有效提高其戶外行走質(zhì)量。 針對(duì)盲人以及視障人群的具體特點(diǎn)以及嵌入式設(shè)備的硬件條件,本設(shè)計(jì)主要采用語音播報(bào)和簡(jiǎn)單的按鍵操作方式進(jìn)行人機(jī)交互。盲人或視障人群可以通過若干按鍵選擇各項(xiàng)功能,系統(tǒng)可根據(jù)選擇進(jìn)入各項(xiàng)功能并播報(bào)豐富的語音信息。當(dāng)盲杖檢測(cè)到前方障礙物時(shí),語音輸出模塊會(huì)發(fā)出警報(bào)提示用戶避讓。 該電子盲杖的軟件設(shè)計(jì)部分已經(jīng)全部完成,硬件部分采用的是ARM11開發(fā)板、GPS接收模塊以及超聲波測(cè)距模塊。在實(shí)地測(cè)試中,該盲杖的定位導(dǎo)航功能和障礙規(guī)避功能均能獨(dú)立、穩(wěn)定的運(yùn)行。通過理論分析和實(shí)驗(yàn)驗(yàn)證,該盲杖的設(shè)計(jì)不僅可以有效指導(dǎo)用戶到達(dá)指定目的地,還為應(yīng)對(duì)復(fù)雜環(huán)境提供了更為全面的保證,具有很強(qiáng)的實(shí)用性以及現(xiàn)實(shí)意義。
[Abstract]:With the development of urban traffic, the travel problem of blind and visually impaired people is facing a huge challenge. The traditional blind rod is far from meeting their needs of safe walking. In order to improve the walking ability and the quality of life of blind people, a wide variety of modern equipment for guiding blind people has gradually entered into the life of blind people. However, both the traditional blind staff and electronic blind guide equipment have some limitations, which can not provide a comprehensive and humane service for blind people. Therefore, it is very urgent and necessary to design an intelligent electronic blind stick which can effectively assist blind people to walk safely, integrate location and navigation, and avoid obstacles. The design of the blind rod is mainly based on the embedded development platform of ARM11-Windows CE 6.0, supplemented by GPS receiving module and ultrasonic ranging module, which can realize GPS real-time positioning, electronic map query, track recording, etc. Real-time navigation and ultrasonic detection obstacles and other functions. The real-time navigation function can be divided into two modes: map navigation and trajectory inflexion navigation, which is convenient for users to switch at any time according to different situations. The trajectory navigation mode is proposed on the basis of the algorithm of trajectory inflexion extraction, which is also the main innovation of this paper. The function of obstacle avoidance is to detect the position of obstacle by using ultrasonic ranging and to warn the user to avoid it in time. In actual walking, the blind and visually impaired people can safely and conveniently reach the preset target by using the staff and turn on the corresponding functions, and effectively improve their outdoor walking quality. According to the characteristics of blind and visually impaired people and the hardware condition of embedded equipment, this design mainly adopts voice broadcast and simple keystroke operation to carry out man-machine interaction. Blind or visually impaired people can select various functions through a number of buttons, the system can enter each function according to the choice and broadcast rich voice information. When a blind stick detects an obstacle ahead, the voice output module alerts the user to avoid it. The software design of the electronic blind rod has been completed, and the hardware part uses the ARM11 development board and GPS receiving module and ultrasonic ranging module. In the field test, the positioning and navigation function and obstacle avoidance function of the staff can be operated independently and stably. Through theoretical analysis and experimental verification, the design of the blind rod not only can effectively guide the user to the designated destination, but also provides a more comprehensive guarantee for the complex environment. It has strong practicability and practical significance.
【學(xué)位授予單位】：北方工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TN965.5;P228.4

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本文編號(hào)：2083886