臺灣博碩士論文加值系統

適當輔具的使用可使身心障礙者生活更方便且舒適。本論文提出利用一語音辨識晶片及DSP晶片結合成語音辨識控制器，並和一般市面上販售的電動輪椅整合成為一電動聲控輪椅系統，以人的聲音為命令控制電動輪椅。並提出模式選擇器的方法使原搖桿控制命令及語音控制命令能共存在同一系統中。實驗結果顯示在正常操作下，電動聲控輪椅可藉由使用者說出的語音命令正確執行該動作。

Many people with multiple impairments need to use a powered wheelchair, voice output communication aid, environmental control, and access information technology. This thesis offers a concept of assistive technology device integration, based on a voice processor chip and a digital signal processor chip to fully integrated a speech recognition controller. The voice-controlled electric wheelchair combines a speech recognition controller with a general electric wheelchair. Using mode selector can make joystick commands and voice commands work together in the same system. Experimental results demonstrate that voice-controlled electric wheelchair can correctly execute voice commands in normal operation.

中文摘要 Ⅰ
英文摘要 Ⅱ
誌謝 Ⅲ
目錄 Ⅳ
圖目錄 Ⅶ
表目錄 Ⅹ
第一章 緒論 1
1.1研究動機與背景 1
1.2論文概要 3
第二章 系統分析 4
2.1 直流馬達簡介 4
2.1.1直流馬達等效電路推導 4
2.2 直流馬達驅動器 9
2.3 電動輪椅之系統分析 15
2.3.1電動輪椅概念說明 15
2.3.2電動輪椅線性機械模型之推導 18
2.4 系統訊號分析 23
2.4.1輸入訊號分析 23
2.4.2迴授訊號分析 24
第三章 晶片功能介紹 28
3.1 語音辨識晶片介紹 28
3.1.1基本功能介紹 28
3.1.2訓練與辨識之流程 39
3.2 數位訊號處理晶片介紹 43
第四章 硬體電路架構 53
4.1 電源電路 53
4.3.1動作原理說明 54
4.2 語音辨識電路完整架構 55
4.2.1語音辨識硬體電路之原理 55
4.2.2數位電路之邏輯及電流分析 58
4.2.3語音辨識程式寫法及原理 63
4.2.4語音辨識系統規格 66
4.3 迴授控制系統完整分析 67
4.3.1閉迴路控制系統 67
4.3.2 DSP語音辨識控制器 68
4.3.3語音命令與電動輪椅狀態的關係 73
第五章 電動聲控輪椅之驗證 77
5.1模糊控制器在電動聲控輪椅系統的運用 77
5.2電動聲控輪椅之驗證 81
第六章 結論及未來展望 88
參考文獻 89
自述 93

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