毕业设计（论文）：基于光电传感器寻迹智能车的研究.doc

基于光电传感器寻迹智能车的研究 摘 要 随着近年来，智能化交通工具被广泛使用，智能汽车的设计和开发，将从根本上改变现有汽车的信息采集处理、数据交换、行车导航与定位、车辆控制的技术方案与体系结构。 本文提出并设计了一种基于Freescale公司HCS12单片机系列设计的无人控制式智能车系统模型，主要论述了采用MC9SXS128单片机控制，通过光电效应识别有黑色引导线，白色路径的道路方案，能够过最小曲率半径50厘米的小弯，同时采取减速策略，同时在过波浪弯的情况下，使车尽可能的稳定，智能识别十字交叉黑线，在直道上采用加速策略。全文由制作智能车的背景概述、硬件电路的设计、机械的调整、软件的设计四部分组成。介绍了系统的开发背景、单片机技术、光电检测技术；综合论述了系统的要求和功能设计，并给出了系统整体构架；对主要硬件电路系统进行了电路原理图的设计，通过数据线连接单片机系统，对其进行指令控制，并设计软件的流程框图，用C语言编程。并论述了传感器在当今智能系统中所承担的重要地位。 系统的制作过程中主要利用MC9SXS128的强大功能，如多级中断，计数器实用，多通道PWM调制，锁相环超频工作灯功能。 该设计具有一定的实用性与前瞻性，基于目前社会对于智能化的迫切需求，家用汽车将来的发展趋势也将越来越趋向智能化，无人驾驶将会不再是梦想。 关键字：智能车；MC9SXS128；光电检测；路径识别；PWM调制；C语言编程 The Resarch Based On Photoelectric Sensor Of Tracking Intelligent Car ABSTRACT From the beginning of these year, intelligent transportation is widely used, the design and development of intelligent vehicle will fundamentally change the existing the technology solutions and system structure of car from information collection processing, data exchange, traffic navigation and positioning, vehicle control .This thesis put forword and design a microcontroller of unmanned intelligent vehicle system model based on Freescale company HCS12 family design , mainly discusses the intelligent car which takes control of MC9SXS128 MCU control through the photoelectric identification of road system of the black guide lines and the white path. The intelligent car can make a least curvature of minimumcurvature radius of 50 cm while taking the slow strategy which can make the car as steadily as possible.It also take the intelligent identification of crossed black lines and make accelerated strategy on the straight path. The whole passage have four parts棗an background of intelligent vehicle,the hardware circuit design, the mechanical adjustment and software design. The thesis introduces the background of the system development,microcontroller technology,photoelectric detection,mainly discussing the system requirements and functional design,also giving the overall system architecture.