分布式在线振动监测网络系统的通信接口设计

振动监测网络可实时监测舰船的动态声场信息,为船舶避碰等安全系统提供准确信息。在线监测对多点进行数据采集,传输,处理,并行数据处理的效率影响整个在线振动监测网络性能。总线技术是一种基于串口多点并行的通信技术,支持多种数据协议及通信接口,本文重点设计了基于CAN船舶分布式在线振动网络通信接口,分析了接口性能。     

基于鑫诺卫星的船岸综合监控系统的设计实现

在传统单船综合监控系统的基础上,设计开发一种具备Web功能的船岸综合监控系统,实现船岸共享监控数据.设计和搭建了由多种现场总线数据采集网络、船舶计算机局域网和基于鑫诺卫星VSAT的船岸宽带通信网络构成的三层网络结构,综合运用Microsoft.NET编程框架、ASP.NET Web编程技术、GDI 图形编程技术、现场总线和计算机网络等技术开发实现.该系统在实船上已得到成功应用,达到设计效果.船岸通信系统采用VSAT通信方式和系统具备Web功能是系统的创新之处.     

基于嵌入式系统的装备远程故障诊断设计

针对某型通信装备仅提供专用电传接口输出系统信息,无法为用户提供远程维护接口,系统故障及诊断信息无法通过网络传输的缺点,利用嵌入式技术和网络技术,选用基于ARM7TDMI内核的S3C44BOX嵌入式处理器和~Clinux操作系统,设计实现了该装备诊断信息网络化传输的改进方案,为实现装备远程故障诊断提供了保障。     

基于FPGA+DSP架构的RapidIO总线的实现

Rapid IO传输效率高、系统成本低、系统稳定性好,在高性能嵌入式系统中得到了广泛的应用。通过对Rapid IO总线及其交换技术的深入研究,设计并实现了基于FPGA+DSP架构的Rapid IO总线协议,为不同应用系统提供一个模块化的功能单元,解决了大部分熟悉Avalon接口而不熟悉Rapid IO接口的FPGA用户的需求。在基于该架构的设计中,FPGA的功能主要是通过SOPC系统实现Rapid IO协议处理,以及提供必须的硬件接口;DSP主要实现Rapid IO协议的控制,以及提供对用户的逻辑接口。文章主要从软件方面对Rapid IO接口实现方案进行了详尽的阐述。最后搭建实验平台对所实现的Rapid IO总线进行了连通性测试,证明了此种方案的可行性。     

基于单边通信协议的片上网络传输接口设计*

为了提升处理单元与片上网络之间的数据交互能力,基于单边通信协议设计了一款片上网络传输接口。该接口通过直接存储访问实现了存储器与网络接口间的高效数据搬移,降低了数据包的发送和接收延时,同时减少了CPU的干预。16核片上多处理器环境下的实验结果表明,对比CPU干预型的片上网络传输接口,论文设计的网络接口能有效提升片上多核处理器的并行计算性能。     

CAN总线在电机实时监测系统中的应用研究

针对大型电机组状态监测系统传感器类型繁多、集成化程度不高的问题,重点研究CAN（Controller Area Network）总线在电机组实时监测系统中的应用,完成基于CAN的传感网络节点硬件接口与软件通信协议的设计,并设计多节点通信的动态优先级算法。MSP430单片机作为子模块核心部件,实现对工程数据的高效获取和对CAN协议传输的控制;基于CAN总线实现数据实时、高效和高可靠性的传输。     

基于海洋环境数据的物联网动态监测系统设计

海洋环境的持续以及多样化开发导致了海洋生物、栖息地和海洋景观的变化,使得海洋环境监测的重要日益明显。本文针对实现海洋环境监测的自动化,提出一种基于海洋环境数据的物联网动态监测系统。该系统综合运用传感器网络技术、3G无线通信技术、Zig Bee通信协议和GIS空间信息处理技术等,实现智能监测海洋环境、实时处理数据等功能。     

基于电子海图的北斗船舶监管系统设计

提出一种基于网络电子海图和北斗卫星导航技术的船舶监管系统。该系统利用北斗短报文通信功能实现船舶状态上报、遇险求救调度及公共信息发布,通过网络电子海图实现船舶状态、监控区域等信息展示,为海事管理部门提供调度救援决策支持。     

嵌入式远程视频监控系统的研究

视频监控系统是安防系统的重要组成部分,是一种防范能力较强的综合系统。本设计在视频监控系统软硬件平台、视频的采集、数据的传输以及终端的显示等方面作了深入的研究,重点讨论了视频信息的采集、视频信息的解编码技术和视频数据的网络传输及客户终端的设计和实现。最后对本系统进行了整体测试,研究结果基本实现了设计所要求的功能,对基于嵌入式的网络视频监控系统的研究具有一定的借鉴参考作用。     

多模智能船载终端硬件设计与实现

本文旨在为多模共性技术在船载终端上提供硬件验证平台。该平台基于Samsung的ARM Cortex-A9四核Exynos4412,在应用方面提供音频、视频录放等多媒体应用功能;在通信方面提供GSM、WCDMA等多种网络通话、短消息以及以太网、wifi联网接入功能。经过调试测试证明,本文所述硬件平台实现了支持多模网络、总线技术应用、运行操作系统的设计目标,平台各功能模块与接口工作稳定,满足参数指标。硬件平台能够运用于总线技术多模共性的船载终端设计中。     

33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.     

第十二届深水操作会议和展览会(英文)

正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.