摘要
该文设计了一种基于Intel PXA270硬件平台的嵌入式可视倒车装置,简要介绍了车内主系统的设计方案,详细设计了车尾视频图像采集、超声波测距电路,定制了嵌入式Windows CE操作系统,并通过字符叠加技术,将汽车与尾部障碍物之间的距离显示在车后全景的视频图像上,并在进入危险距离时提供语音报警功能。该系统运行稳定可靠,后视图像直观真实,测距准确,能够满足车载可视倒车的要求。
This paper presents an embedded visual parking device based on Intel PXA270 processor.It simply introduces the main system in the car and puts forward a detailed design of the video capture circuit and the ultrasonic distance measurement at the end of the car,then briefly discusses the system customization. It can display the whole sight behind the vehicle,while showing the distance of the nearest obstacle over the video image automatically with the character-overlapping technology and alarm the danger.The system is provided with high accuracy and reliability and fully meets the requirements.
基金
浙江省重大科技攻关项目(2005C10019)
关键词
嵌入式系统
可视倒车
超声波测距
字符叠加
embedded system
visual parking device
ultrasonic distance measurement
character-overlapping
