智能小车无线控制系统.doc

智能小车无线控制系统 摘 要 本设计一个无线小车控制，系统以单片机STC89C52作为主控芯片集成了USB和nRF905两个模块，通过USB接口与上位机（通用计算机）相连，接收由上位机传来的控制信息（例如：前进、后退、左转、右转），用nRF905无线发射模块、无线接收模块，将该控制信息经过nRF905无线传输技术433MHz发射出去；并通过nRF905接收器接收遥控器的控制信号，再将信号传给小车电机并作出相应动作。本设计主要由电机USB传输模块、单片机处理模块、无线发射模块和无线接收模块四部分组成。该无线遥控小车的功能如下：能够在有障碍物的情况下实现150米内的无线遥控；实现前进、后退、左转、右转，温度信息的采集并对采集信息处理等功能。然后将处理后的数据传送至PC端，并通过VB程序显示在屏幕上。 关键词： 微控制器；无线传输技术；上位机；USB；控制器 Abstract The design adopts a wireless system with car controller STC 89C52 microcontroller as the main control chip. This controller concluded nRF905 and USB modules. The controller connects PC machine (general purpose computer) through general USB interface, and receives controlling information (forward, backward, left, right) from the computer. The thesis adopts wireless remote-controlling module consisting of wireless sending module and wireless receiving module. It sends the controlling information out by the nRF905 wireless technology. After receiving the controlling signal , the nRF905 receiver sends it to motor car and takes action accordingly. This system mainly consist of motor USB transmission module, single chip micro processing module, wireless transmitting module and wireless receiving modules. The wireless remote controlling of the car functions are as follows: under the condition of the obstacles, it can complete 150 meters of wireless remote control. The car can go forward, backward, left, and right. In addition, the little car collect some information else, such as the temperature. Then the related datas and information have been send back to the PC. The collected information is displayed by the VB program. Keywords: MCU; wireless transmission technology; PC ;USB;Controller 引 言 自动化是人类文明进步和现代化的标志，特别是在当今信息时代，在我国由制造大国向制造强国转变的过程中，智能控制与自动化技术正广泛应用于工业、农业、军事、交通运输、医疗、服务和家庭方面，改变着社会各人们的生活。今天，利用无线电波传送声音和图像节目的广播和电视，已经深入到社会生活的各个角落，成为亿万人民的伴侣。利用无线电波可以传播信号的这一特性，无线电遥控技术应运而生。无线电遥控就是利用电磁波在远距离上，按照人们的一致实现对物体对象的无线操纵和控制，这种无线控制的方式就叫做无线电遥控[1]。 无线电遥控技术发展虽然只有