随着人们生活水平的提高，出门旅行己经成为了人们日常生活的组成部分，因此作为交通工具的大客车也成为了人们出门旅行所选择的的工具之一。然而值得注意的是，在享受大客车带来的方便之时各种交通事故也不断发生，尤其是在夜晚，对向行驶的大客车如果不合理的控制好远光灯的开启和关闭那么非常容易引其事故的发生，而这也引起了众多研究学者的关注与分析。在此情况下，通过设计一款大客车远光灯的自动调节系统，使其能够根据光照强度检测传感器和超声波距离检测传感器对迎面的众多车辆进行检测，自动对远光灯进行控制，对改善当前的手动操作具有一定的意义。有鉴于此，本文首先对论文的研究背景以及内容进行分析，然后根据实际的功能对大客车远光灯的硬件电路进行详细的设计，主要有检测模块包括超声波距离检测和光敏强度检测模块，远光灯电路、单片机核心电路、以及显示电路和按键电路：接着根据实际需要实现的功能，利用C语言在KEL软件中对软件算法进行设计：最后为了验证设计的硬件电路和软件算法的正确性，对大客车远光灯自动调节系统的实物进行了制作，在制作的远光灯实物上进行验证调试，实验表明设计的远光灯能够很好的根据超声波和光照强度实现对远光灯的自动控制。关键词：自动调控、远光灯、超声波、光敏检测Analysis of the Bus High-beam Automatic Control SystemAbstractCar as people living standard rise to become one of the essential tools that occupy the home,enjoying the car bring convenient at the time of all kinds of traffic accidents happened constantlytoo,especially at night,to drive the car if you don't reasonable control the open and close thedistance light so very easy to lead the happening of the accident,so the paper design a car andlight automatic control system,according to the light intensity detecting sensor and ultrasonicdistance sensor to detect oncoming cars,automatic to control the distance light,to improve thecurrent manual operation has a certain significance.Paper first analyze the thesis research background and content,and then according to theactual function of automobile and light of the design of the hardware circuit in detail,mainlyincluding ultrasonic detection module distance detection and light intensity detection module,and light circuit,microcontroller core circuit and display circuit and key circuit;Then according tothe actual need to implement the function,using C language for software in the KEIL softwarealgorithm design;Finally,in order to verify the correctness of the design of hardware circuit andsoftware algorithm,the distance light automatic control system of automobile physicalproduction,making light of phsical on debugging,the experiment shows that the distance light ofdesign can be very good according to the ultrasonic and light intensity to realize the automaticcontrol of the distance light.Key words:Automatic control light ultrasonic photosensitive test目录Analysis of the Bus High-beam Automatic Control System IlAbstract ll前言1一.绪论211论文研究的背景与意义21.2论文研究的主要内容21.3国内外研究综述313.1国内研究综述313.2国外研究综述3二.系统总体方案设计52.1远光灯总体框图设计52.2单片机主控核心控制模块选择52.3距离检测模块72.4光敏检测模块8三.硬件电路设计103.1主控电路设计103.2超声波距离电路113.3LCD显示电路113.4光敏检测电路设计133.5ED远光灯电路153.6按键电路15四.系统软件设计174.1主程序设计174.2子主程序设计194.2.1显示子函数194.2.2光敏强度检测子函数204.2.3超声波距离检测子函数20五.实物与结果215.1实物制作215.2调试与结果2223