基于单片机at89s51的无线遥控小车设计.doc

毕业论文 基于单片机AT89S51的无线遥控小车设计 摘要 近年来随着计算机在社会领域的渗透和大规模集成电路的发展，单片机的应用正在不断地走向深入，由于它具有功能强，体积小，功耗低，价格便宜，工作可靠，使用方便等特点，因此特别适合于与控制有关的系统，越来越广泛地应用于自动控制，智能化仪器，仪表，数据采集，军工产品以及家用电器等各个领域，单片机往往是作为一个核心部件来使用，在根据具体硬件结构，以及针对具体应用对象特点的软件结合，以作完善。该无线遥控小车采用玩具小车车架，。采用AT89S51单片机作为主控制核心，通过编码、解码集成芯片PT226/PT2272无线传送操作指令，利用光电门分别精细检测小车左右驱动轮的速度，从而通过PWM动态调整、精确控制小车的速度与方向；ABSTRACT In recent years, with computer penetration in the social sphere and the development of large-scale integrated circuits, MCU applications are constantly deepening, as it has a function of strong, small size, low power consumption, cheap, reliable, easy to use , and other characteristics, and therefore particularly suited to control the system, more widely used in automatic control, intelligent instruments, meters, data acquisition, military products and household appliances, and other fields, the MCU is often as a core component to use, in accordance with specific hardware and application-specific characteristics of the object with software to make perfect.The wireless remote control toy car, car uses frame. Using AT89S51 as control core, through the encoding, decoding integration chip wireless transmission PT226 / PT2272 instructions, using photoelectric detection car doors were fine about driving wheel speed, and through the dynamic adjustment, the accurate control PWM velocity and direction of the car, which is aimed for wireless remote control, intelligent obstacle avoidance, sound-light alarm, mileage display function. The wireless remote control function is as follows: the car is under the condition of the obstacles in realizing within 20 meters of wireless remote control, Achieve forward, backward, left, right, slowing down, turned on the selection and speed. Keywords: Wireless remote control SCM PWM Wireless data acquisition 目录 摘要 I ABSTRACT II 前言 1 1绪论 2 1.1课题背景和意义 2 1.2国内外研究现状 2 2 设计要求 4 2.1设计任务 4 2.2原理描述 4 3 车载模块设计 7 3.1 AT89S51 7 3.2 电机驱动芯片L298N 10 3.3 无线遥控接收电路设计 12