北部湾海洋船舶污染实时监控系统设计

北部湾海域是生态重点监护海域,为了提高对海洋污染实时监控性能,进行北部湾海洋船舶污染实时监控系统设计。系统采用双16位定点DSP作为核心控制芯片,对海水进行实时取样,对取样的海水通过视觉分析和化学分析双重分析方法进行污染检测。系统的硬件模块主要分为AD采样模块、污染物质检测控制模块、上位机通信模块和人机交互模块等,设计MUX101程控驱动模块进行海洋船舶污染的报警控制,在嵌入式内核下进行监控系统的软件开发设计。实验测试分析结果表明,采用该系统进行北部湾海洋船舶污染监控,对污染物质检测的准确性和实时性较好。     

基于PLC的船用增压锅炉点火与火焰检测装置设计

针对现有船用增压锅炉点火和火焰检测装置无逻辑保护功能,容易误操作的问题,提出了基于PLC的改进设计方案。利用PLC技术代替传统继电器控制回路,以逻辑保护模块为核心,将系统分为正常点火回路、应急点火回路、炉膛火焰检测回路、空气夹层火焰检测回路和报警回路;提出PLC配置方案和实现逻辑保护功能的方法;利用该方案研制新型增压锅炉点火与火焰检测装置,初步应用表面新装置大大减少船员的劳动量,提高系统的安全性和可靠性。     

基于单片机的船舶通用型风险报警系统

为了降低现有船舶报警系统的实际运行负荷,基于单片机设计了船舶通用型风险报警系统。制备船舶设备信号采集器,利用单片机和芯片组,组成采集器中央控制区,提取并分析当前设备运行信息,搭配光电隔离技术,保证信道光电输出的恒定性,以逻辑输出型传感器为核心,设计系统报警器,通过温度模拟传感器和无线传输模块,与信号采集器电路之间形成信号数据通信和控制,开发环境数据通信程序和报警检测程序,驱动系统核心硬件,通过CAN总线网络协议,以报文的形式传递中央控制指令,实现风险报警。实验数据表明,该风险报警系统,常态驱动下运行负荷同比下降了42%左右,风险驱动下运行负荷降低了47%,可以有效降低报警系统运行负荷。     

船舶燃油计算机管理系统的研究

介绍了一种船舶燃油计算机管理系统的有关情况。该系统可以利用现在船上使用的检测报警系统计算机实现船舶燃油管理系统的计算机连续在线自动测量，实现船舶燃油管理中的统计、记录、运算和预测功能。     

基于单片机的船舱温度临界报警系统

针对传统的船舱温度临界报警系统,由于温度监控不到位导致报警不及时的问题,提出一个基于单片机的船舱温度临界报警系统设计。该设计将单片机作为核心控制硬件,控制系统整体电路。同时设计数据采集模块,利用温度测量仪测试船舱温度,传感器将数据置换成电信号,并以数据帧的形式将结果发送到报警模块,检测温度信号波幅,进行报警处理,至此报警系统设计完毕。实验结果表明,所设计的报警系统对于温度的监测结果更准确,报警率提高了38.55%。     

利用PLC实现液压系统油箱油温控制

利用可编程控制器实现液压系统油箱油温信号的采集、编程及控制,并对不同类型的温度传感器输入信号所采用的编程方式及软件流程进行讨论,实现了油箱温度的控制、报警及整个液压系统管路及阀件的保护功能。     

船用侧推变频器的设计

侧推变频器是船舶侧推系统的控制核心。结合某具体项目,首先介绍了变频器的硬件设计,包括主回路设计、功率模块选型等方面。其次介绍了变频器的软件功能设计,对典型功能的实现原理及报警故障处理进行了详细说明。最后进行了总结,表明设计达到了技术指标要求,具有一定的工程实践指导作用。     

一种基于ARM的蓄电池参数检测模块

本文介绍一种以智能传感器和CAN总线为核心的智能化铅酸蓄电池参数检测的设计思想和方法。该模块能对单块蓄电池电压、温度、密度进行检测,并对液位进行上、下限报警。该模块由于使用了数字化技术及CAN总线技术,不但降低了成本,还提高了模块的实时性、可靠性和灵活性。     

超声波液位检测报警系统在船舶上的应用研究

为了解决船舶液位检测问题,介绍一种超声波液位检测报警系统,文章重点分析了超声波液位测量变送器的特点,PLC特殊模块的应用及其程序编程,实现了对船舶液位的实时检测与报警.     

船舶救助艇艇机存油量缺陷及处理

正0引言近日,某货船在澳大利亚某锚地接受PSC检查时,因救助艇艇机存油量不足,被开出代号为99的缺陷,要求其在规定时限内提供材料证明救助艇艇机的存油量满足SOLAS公约最少要求,若不满足将被滞留。经过现场测量,救助艇油箱内的油量约为42 L,约占油箱容积的80%,船上未存放备用燃油。船员根据经验和习惯,认为救助艇油箱的燃油充足,从未考虑过存油是否达到SOLAS公约要求[1]。     

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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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.     

某海港码头的撞损修复

依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。