【正文】 基于單片機的超聲波測距設(shè)計目 錄設(shè)計總說明 .................................................................................................................................IINTRODUCTION......................................................................................................................II第 1 章 緒論 ...............................................................................................................................1 概述 ..................................................................................................................................1 國內(nèi)外發(fā)展現(xiàn)狀 ..............................................................................................................1第 2 章 系統(tǒng)總體方案設(shè)計 .......................................................................................................1 設(shè)計要求 ..........................................................................................................................1 方案選擇 ..........................................................................................................................2 單片機的選擇 ...........................................................................................................2第 3 章 系統(tǒng)硬件設(shè)計 ...............................................................................................................2 整體方案設(shè)計 ..................................................................................................................2 系統(tǒng)概述 ...................................................................................................................2 系統(tǒng)框圖 ...................................................................................................................2 最小系統(tǒng)模塊 ..................................................................................................................3 STC89C52 簡介 .........................................................................................................3 最小系統(tǒng)電路 ...........................................................................................................5 HCSR04 模塊 .................................................................................................................6 HCSR04 簡介 ..........................................................................................................6 超聲波的特性 ...........................................................................................................7 超聲波換能器 .......................................................................................................8超聲波傳感器原理 .................................................................................................................9測 距 分 析 ..............................................................................................................................13 顯示電路 ........................................................................................................................14 數(shù)碼管簡介 .............................................................................................................14數(shù)碼管概述 .......................................................................................................................15 數(shù)碼管顯示模塊電路 .............................................................................................15 按鍵模塊電路 .........................................................................................................16 報警模塊電路 .........................................................................................................17第 4 章 軟件設(shè)計 .....................................................................................................................18 程序語言及開發(fā)環(huán)境 ....................................................................................................18 程序流程圖設(shè)計 ............................................................................................................19 超聲波模塊程序流程圖設(shè)計 .................................................................................19第 5 章 硬件組裝與調(diào)試 .........................................................................................................20 元器件的選擇與測量 ....................................................................................................20 元件的焊接與組裝 ........................................................................................................21 電路的調(diào)試 ....................................................................................................................21 調(diào)試方法 .................................................................................................................21 調(diào)試步驟 ..........................................................................................................