【正文】 y. Electronic design technology, it is a national hightech instance is one of the most important standard, its research significance is greatThe design though just a demo model, but is full of scientific and practical. First we according to the plex situation of road traffic, in accordance with the appropriate author to make a road model, including bend, straight and pavement set obstacles, etc. On curved and straight, the car along the orbit free exercise, when the small car meet obstacles, pulse modulation infrared sensors to detect the signal sent to the microcontroller, a corresponding control signal according to the program MCU control cars automatically avoid obstacles, to carry on the back, forward, turn left, turn rightSubject partsIntelligent vehicle is a concentration of environment awareness, planning decision, multiscale auxiliary driving, and other functions in an integrated system, is an important part of intelligent transportation system. In military, civilian, space exploration and other fields has a broad application prospect. The design of smart car control system are studied, based on path planning is a process of the intelligent car control system theory is put forwardThe progress of science and technology of intelligent led products, but also accelerated the pace of development, MCU application scope of its application is increasingly wide, has gone far beyond the field of puter science. Small to toys, credit CARDS, big to the space shuttle, robots, from data acquisition, remote control and fuzzy control, intelligent systems with the human daily life, everywhere is dependent on the single chip microputer, this design is a typical application of single chip microputer. This design by implementing the driverless car, on the tests, by the reaction of the single chip microputer to control the car, make its bee intelligent, automatic forward, turn and stop function, after continuing the perfection of this system also can be applied to road testing, security patrol, can meet the needs of society.In design, the use of the sensors to detect road surface condition, sensor central sea are faint and adopts a paring amplifier amplification, and the signal input to the controller, the controlled end using stepper motor, because of the step motor is controlled electrical pulse, as long as the output from the controller to satisfy stepper motor merits of fixed control word. In operation of stepping motor and a driving circuit, it also to join a drive circuit in the circuit, each function module is different to the requirement of power supply current, the power supply part set up conversion circuit, so as to meet the needs of the various parts. After parison choice element, design the circuit principle diagram and the circuit board, and do the debugging of hardware, system software and hardware is often the bination of organic whole. Software, on the use of the 51 singlechip timer interrupt to control pavement test interval and the car movement and speed. Due to take that road is simple, it is using more traditional assembly language for programming. For the correctness of the program design, using a monly used keil c51 simulation software simulation validation, the last is integrated debugging of software and hardware, and prove the correctness and feasibility of the design scheme. electronic intelligent car design requirements基于單片機的智能循跡小車外文翻譯 (2)352(1)electricvehiclescanbe；；Using89c51asthecar39。蜂鳴器主要是根據(jù)要求在特定的位置作出出響應來報告位置。 執(zhí)行模塊：執(zhí)行模塊是由液晶顯示、電機驅(qū)動及電機、蜂鳴器三部分組成。將檢測到的信號經(jīng)過預算放大模塊lm324放大整形后送給單片機處理，其核心部分是幾個光電傳感器。它要解決的基本問題 有：(1) 接收、處理上位機發(fā)送的數(shù)據(jù)信息；(2) 設計步進電機的控制系統(tǒng)；(3) 采集小車的位移和轉(zhuǎn)角信息，定位小車姿態(tài)，分析系統(tǒng)控制誤差； 總設計方案由系統(tǒng)結構得到智能小車控制系統(tǒng)的命令流程：（1）啟動AutoCAD，繪制或選擇一條封閉曲線為小車路徑，拾取小車的起始路徑圖元（2）對選取的路徑圖形進行處理，使小車轉(zhuǎn)彎處存在的棱角在最小轉(zhuǎn)彎半徑范圍外以圓弧方式過渡（3）生成新的路徑圖形，模擬小車的運動過程；（4）計算出小車行駛所需要的位移和車輪轉(zhuǎn)角，并將此數(shù)據(jù)發(fā)送給下位機（5）下位機接收數(shù)據(jù)后，通過軟件編程控制小車車輪的轉(zhuǎn)速和轉(zhuǎn)角，使其按照 預定路徑前進 一個完整的控制系統(tǒng)要求系統(tǒng)的各功能模塊聯(lián)系緊密，根據(jù)上述命令流程和它們之間的關系，可得系統(tǒng)的總設計方案。如果任意給定 小車一條無障路徑，通過該系統(tǒng)，小車就可以得到系統(tǒng)對路徑圖形處理后的數(shù)據(jù)(