双丝焊送丝机嵌入式通信系统前期研究

双丝MAG(熔化极活性气体保护焊)焊接的应用越来越广泛.在造船行业中,由于船台焊接作业特点决定了电焊机设备普遍使用几十米的加长控制电缆.利用嵌入式系统,研究焊接电源和送丝机之间控制信号通信系统,实现减少控制电缆的芯数,既可减少生产成本,又可减少断线故障率,提高生产质量和效率、节能降耗,具有重要的现实意义,且对于多丝焊接...     

中低速磁浮信号车地通信电磁干扰研究与实现

针对北京S1线信号系统车地通信出现的电磁干扰问题,对干扰原因进行分析,确定干扰原因,并提出针对性的抑制措施,取得良好效果,保障北京S1线的平稳运行.研究方法和处理措施,为后续中低速磁浮交通的建设和维护积累经验.     

PC串口与CAN总线接口双向转换卡的设计

文章介绍了一种PC与CAN总线之间进行通信的接口转换卡的设计。这种转换卡结构简单,可以应用在对可靠性要求高而速率要求不高的控制系统中。文章的设计主要着重于通信协议的设计和软件的实现。     

基于虚拟列车的CBTC系统仿真技术研究与实现

文章阐述地铁列车模拟控制系统的重要性,提出模拟列车控制系统算法.重点研究列车运行模拟计算、模拟列车控制系统及应用软件架构设计,为自主化基于通信的列车控制(CBTC)系统研发提供软件模拟环境.     

大学英语学习者移动学习理念及移动学习状况的调查

大学英语移动学习理念的提出为移动学习模式的创立奠定了坚实的基础。移动学习模式是推动大学英语教学改革的积极尝试。移动学习模式为学生自主学习提供了平台。本文试图通过调查目前的大学英语学习者对移动学习的看法和认识,找到学习者自身存在的问题,从而提出建设性意见以期促进大学英语移动学习模式取得实效。     

基于IMC理论的十堰城市营销与品牌提升策略

结合整合营销传播的相关理论,分析了十堰城市形象定位与产品设计,提出了十堰城市营销与品牌提升的构想和实施策略。     

An Analysis of the Impact of the Internet on Coastal Management

The role of the Internet in coastal management practice is analyzed through the Internet's communication and information access capacity. Primary and secondary impacts of the Internet in coastal management are assessed. A broad research framework is employed, including background on the development and spread of the Internet worldwide; analysis of emerging literature on the societal impact of the Internet; limited existing research on the use of the Internet by environmental management professionals generally and coastal managers in particular; and personal experience of the authors in the development of coastal management Internet sites. This analytical framework is supplemented by the first survey of integrated coastal management (ICM) Internet websites by www.coastalmanagement.com and a case study of the Internet Center for Coastal Management (ICCM) Internet-based communication platform based at the University of Washington. The survey of ICM websites found a total of 77 websites worldwide, with a dominance of sites in English located in the developed world. Assessment of the first year of operation of the ICCM project to facilitate discussion between coastal management practitioners and students in the United States and the Philippines demonstrates the enormous potential of the Internet as a communications tool in coastal management and also reveals the many practical technological and cultural constraints of using the Internet, especially in working on a project between the developed and developing world. Three groups of scenarios of the future use of the Internet in coastal management with decreasing levels of forecast certainty, namely, "probable," and "possible," and "potential for" are presented and discussed. Finally, the potential for the Internet to fundamentally transform the practice of coastal management is analyzed. It is concluded that while such a potential exists, there remain significant research questions requiring further analysis before the full transformative potential, and the possible impacts of such a transformation on coastal management, can be fully assessed. This article aims to provide a benchmark against which such future assessments can be made.     

四网协同建设无线城市策略分析

四网协同能更好发挥移动通信网络各自的覆盖能力和业务承载能力,实现四网长期共存,互为补充,协同发展,有利于集中统筹,避免网络的重复投资。中国移动提出打造无线城市建设目标,通过无线城市的建设将物联网、移动互联网实现融合发展,实现中国移动提升品牌价值,实现无线城市惠民、便民、增收的三大目标。     

车辆集中润滑数字化信息管理系统

通过对车辆集中润滑系统的应用研究,开发了数字化信息管理系统.系统通过无线网络将分散的各车辆集中润滑系统进行联网,完成了对各车辆集中润滑系统的集中管理,该系统具有远程调控、实时数据监控、报表自动归档、故障自检及报警功能.将车辆集中润滑系统的管理由原有的粗放式、分散式工作模式提升到数字化、智能化、信息化阶段,对客车、公交车、商用车领域集中润滑系统的应用具有重要的意义.     

软件无线电技术在铁路通信中的应用

首先介绍目前先进的软件无线电技术,然后通过实际的研发项目,详细地描述此技术在铁路高速移动接入通信系统中的应用.