小车状态控制系统研究.doc

小车状态控制系统研究



目    录

摘要 1

引言 1

1.系统结构和工作原理 2

1.1系统概述 2

1.2系统结构和工作原理 2

2.方案设计与论证 6

2.1信号传输模块的选定 6

2.2车体的选定 6

3.硬件电路设计与实现 7

3.1运动控制单元电路 7

3.2无线路由器硬件结构 11

3.3电源稳压电路 11

3.4 STC89C51最小系统 12

4. 系统程序设计 13

4.1 OPENWRT平台的搭建 13

4.2路由器与PC机交互过程 14

4.3小车状态控制程序流程 15

5.仿真结果 16

6.总结 18

参考文献 18

致谢 20

    摘  要：本文选用PC机和无线路由器，通过WIFI(Wireless Fidelity)技术向小车发送控制命令，实现远距离控制小车的目的。该系统主要包括小车运动控制、图像处理和上位机控制三部分电路。本系统以无线路由器为硬件基础，以OpenWrt作为其操作系统，并挂载摄像头，采用WIFI技术实现小车和上位机之间的信号传输。本系统以上位机作为系统控制平台，利用PHP（Hypertext Preprocessor）脚本语言对该浏览器进行视频框和控制按钮的编辑和制作。本系统通过Proteus软件对小车的运动控制部分进行仿真，采用按键来模拟WIFI控制信号。仿真结果表明，本系统设计方案可行，硬件电路选择合理，软件程序设计正确，能够实现小车状态控制。

关键词：小车状态；WIFI技术；控制系统；单片机

Research of Control System on Car State 

Abstract: In the paper, PC and Wireless router were used to send control commands to the car with WIFI(Wireless Fidelity) technology so as to achieve the purpose of remote control car. The system is mainly consisted of three parts : trolley motion control, image processing and PC control. This system is taken a wireless router as its hardware and the OpenWrt as its operating system. In addition, it is mounted the camera with WIFI technology to achieve a signal transmission between the host computer and the car. The system control platform is a PC which can finish the edit and production of video frame and the control buttons in PHP (Hypertext Preprocessor) scripting. The simulation of motion control was achieved with Proteus software in the system, and the WIFI control signal was simulated with the buttons. The results of simulation show that the system has feasible design scheme, reasonable hardware circuit and correct software program so as to control the car state .

Key Words: Car Status; WiFi Technology; Control System; MCU