【正文】 本科畢業(yè)論文(設(shè)計)論文題目 基于 AT89S52 單片機的多功能智能小車設(shè)計論文 2022 年 4 年 28 月。學(xué)位論文作者簽名： 日 期： ）摘 要I摘 要本文介紹了一種利用 AT89S52 單片機為控制核心，結(jié)合多種傳感器以及 PID 算法實現(xiàn)循跡避障功能的智能小車。利用反射式光電傳感器檢測黑線實現(xiàn)小車循跡，利用超聲波傳感器檢測道路上的障礙，控制電動小汽車的自動避障，整個系統(tǒng)具有自動尋跡、尋光和速度測試功能。其中，控制部分采用 AT89S52，AT89S52 是一款 8 位單片機，它的易用性和多功能性受到了廣大使用者的好評。電機驅(qū)動采用常用的 PWM方式進行電機的調(diào)速控制，小車的速度通過液晶屏來顯示。整個系統(tǒng)的電路結(jié)構(gòu)較簡單，可靠性能高，能滿足各種設(shè)計的要求。隨著我國高科技水平的不斷提高和工業(yè)自動化進程的不斷推進，智能小車被廣泛應(yīng)用于各種玩具和其他產(chǎn)品的設(shè)計中，極大地豐富了人們的生活。關(guān)鍵詞:單片機；傳感器；PWM 調(diào)速；循跡避障； pid 控制算法學(xué)士學(xué)位論文IIAbstractThis paper introduced an kind of intelligent car that use AT89S52 SCM as control core , bine with multiple sensors and PID control algorithm to achieve the function that find track and avoid obstacles. the electrical car uses reflective photoelectric sensor to detect black line to achieve trackfinding, uses ultrasonic sensors to detect obstacles on the road to avoid obstacles entire system has the function that trace route automatically,find light and test speed .Among them, AT89S52 which has 8bit singlechip is used as the control of useing easily and having multifunction ,it suffers large users. The motor driver uses the mon wayPWM for the motor controlling speed. the speed of car is displayed by the LCD screen .The circuit structure of the whole system is relatively simple, high reliability, and it can meet the requirements of the various the continuous improvement of high technology and the stead process in industrial automation in our country,the Intelligencecar which gradually access to people39。s attention has been widely applied to design a variety of toys and other products,which greatly enriched people39。s lives.KEY WORDS: SCM。 Sensor。 PWM speed adjusting。 Track finding and obstacle avoidance。 PID control algorithm目 錄III目 錄1 緒 論 ...................................................................................................................................1 研究背景和發(fā)展現(xiàn)狀 ....................................................................................................1 研究目的和意義 ............................................................................................................1 研究內(nèi)容 ........................................................................................................................12 系統(tǒng)總體方案設(shè)計與論證 ...................................................................................................3 總體方案設(shè)計 ................................................................................................................3 方案選擇論證 ................................................................................................................3 循跡檢測系統(tǒng) ..........................................................................................................4 障礙物檢測系統(tǒng) ......................................................................................................4 光源檢測系統(tǒng) ..........................................................................................................5 速度檢測系統(tǒng) ..........................................................................................................5 電機驅(qū)動系統(tǒng) ................................................................................................................5 單片機控制電路系統(tǒng) ....................................................................................................6 顯示模塊 ........................................................................................................................63 硬件設(shè)計 ...............................................................................................................................7 總體設(shè)計方案 ................................................................................................................7 單片機控制電路 ............................................................................................................8 電機驅(qū)動電路 ...............................................................................................................10 驅(qū)動電路 .................................................................................................................10 PWM 調(diào)速原理 ......................................................................................................11 循跡檢測電路 ..............................................................................................................12 障礙物檢測電路 ..........................................