【正文】 畢 業(yè) 設(shè) 計 （ 論 文 ） 設(shè)計 (論文 )題目 ： 基于單片機(jī)的超聲波測距報警器設(shè)計 —— 硬件設(shè)計 目錄 I 目 錄 摘 要 ........................................................................................................................................... III Abstract ........................................................................................................................................... IV 第 1 章 緒論 ............................................................................................................................. 1 課題的背景和意義 ..................................................................................................... 1 超聲波測距的發(fā)展現(xiàn)狀趨勢 .................................................................................. 1 本課題任務(wù) ................................................................................................................... 2 第 2 章 單片機(jī) ........................................................................................................................ 3 單片機(jī)原理及應(yīng)用 ..................................................................................................... 3 單片機(jī)發(fā)展前景 ......................................................................................................... 4 第 3 章 超聲波測距原理 ........................................................................................................ 5 超聲波原理及應(yīng)用 ..................................................................................................... 5 超聲波測距原理 ......................................................................................................... 6 第 4 章 測距系統(tǒng)構(gòu)成與誤差分析 ..................................................................................... 8 單片機(jī)控制器 .............................................................................................................. 8 傳感器 ............................................................................................................................ 8 顯示屏 ..................................................................................................................... 9 系統(tǒng)誤差 ..................................................................................................................... 10 第 5 章系統(tǒng)設(shè)計 .......................................................................................................................11 系統(tǒng)框圖 ......................................................................................................................11 硬件 ............................................................................................................................... 12 程序流程圖 ................................................................................................................. 14 系統(tǒng)實物圖 ................................................................................................................. 15 測試及數(shù)據(jù)分析 ....................................................................................................... 15 第 6 章 Proteus 仿真效果 ................................................................................................... 18 第 7 章 設(shè)計總結(jié)與體會 ...................................................................................................... 20 設(shè)計總結(jié) ..................................................................................................................... 20 目錄 II 設(shè)計體會 ..................................................................................................................... 20 參考文獻(xiàn) .................................................................................................................................... 21 金陵科技學(xué)院學(xué)士學(xué)位論文 摘要 III 基于單片機(jī)的超聲波測距報警器設(shè)計 —— 硬件設(shè)計 摘 要 論文的內(nèi)容是基于 AT89C51 單片機(jī)倒車防撞系統(tǒng)的設(shè)計，主要是利用超聲波的特點和優(yōu)勢，將超聲波測距系統(tǒng)和 AT89C51 單片機(jī)結(jié)合于一體，設(shè)計出一種基于 AT89C51 單片機(jī)的倒車防撞報警系統(tǒng)。該系統(tǒng)采用軟、硬件結(jié)合的方法，具有模塊化和多用化的特點。 論文概述了超聲波檢測的發(fā)展及基本原理，闡述了超聲波傳感器的原理及特性。對于系統(tǒng)的一些主要參數(shù)進(jìn)行了討論，并且在介紹超聲波測距系統(tǒng)功能的基礎(chǔ)上，提出了系統(tǒng)的總體構(gòu)成。通過多種發(fā)射接收電路設(shè)計方案比較，得出了最佳設(shè)計方案，并對系統(tǒng)各個設(shè)計單元的原理進(jìn)行了介紹。對組成 各系統(tǒng)電路的芯片進(jìn)行了介紹，并闡述了它們的工作原理。論文介紹了系統(tǒng)的軟件結(jié)構(gòu)，通過編程來實現(xiàn)系統(tǒng)功能。最后，通過對系統(tǒng)的誤差分析，給出了系統(tǒng)的改進(jìn)方案。 關(guān)鍵詞： 單片機(jī) 超聲波 AT89C51 金陵科技學(xué)院學(xué)士學(xué)位論文 Abstract IV DESIGN OF ULTRASONIC RANGING BASED ON SINGLECHIP Abstract The paper is based on the contents of the AT89C51 monolithic integrated circuit reverse collision avoidance system design, mainly using ultrasound features and advantages, ultrasound ranging system and the integration with the integration AT89C51 monolithic integrated circuit, AT89C51 monolithic integrated circuit based on the design of a reverse collision avoidance warning systems. The system used software and hardware integrated approach of a modular and multiuse characteristics. The paper outlines the development and the basic principles of ultrasound tests on the principles and characteristics of ultrasound sensors. Some of the main paramete