基于單片機的超聲波測距設計(已修改)

　

【正文】 基于單片機的超聲波測距設計目 錄設計總說明 .................................................................................................................................IINTRODUCTION......................................................................................................................II第 1 章 緒論 ...............................................................................................................................1 概述 ..................................................................................................................................1 國內外發展現狀 ..............................................................................................................1第 2 章 系統總體方案設計 .......................................................................................................1 設計要求 ..........................................................................................................................1 方案選擇 ..........................................................................................................................2 單片機的選擇 ...........................................................................................................2第 3 章 系統硬件設計 ...............................................................................................................2 整體方案設計 ..................................................................................................................2 系統概述 ...................................................................................................................2 系統框圖 ...................................................................................................................2 最小系統模塊 ..................................................................................................................3 STC89C52 簡介 .........................................................................................................3 最小系統電路 ...........................................................................................................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 數碼管簡介 .............................................................................................................14數碼管概述 .......................................................................................................................15 數碼管顯示模塊電路 .............................................................................................15 按鍵模塊電路 .........................................................................................................16 報警模塊電路 .........................................................................................................17第 4 章 軟件設計 .....................................................................................................................18 程序語言及開發環境 ....................................................................................................18 程序流程圖設計 ............................................................................................................19 超聲波模塊程序流程圖設計 .................................................................................19第 5 章 硬件組裝與調試 .........................................................................................................20 元器件的選擇與測量 ....................................................................................................20 元件的焊接與組裝 ........................................................................................................21 電路的調試 ....................................................................................................................21 調試方法 .................................................................................................................21 調試步驟 ..........................................................................................................