舰艇舱室温湿度监测系统设计

舰艇舱室温湿度对舰艇安全和作战训练任务的影响极端重要。为实现对舱室温湿度实时、统一、精确的测量,设计了采用MCS-51单片机为控制中心,由ADS90温度传感器、HSll00／HSll01湿度传感器及8位段码LED显示器构成的实时温湿度监测系统。该系统电路简单、工作稳定、集成度高,调试方便,测试精度高,能满足对舰艇各舱室勺重要点温湿度的监测要求,能极大的提高我军在役舰艇特别是老式舰艇的自动化程度,对战斗力的提高能起到非常重要的作用。     

基于光栅传感器的舰船舱室温湿度监测系统设计

由于传统监测系统温湿度采集和感应不稳定,导致监测数据存在严重偏差,设计基于光栅传感器的舰船舱室温湿度监测系统。安装无线通信网络和光栅传感器,改装系统电路连接结构。利用光栅传感器实现实时环境参数的稳定感应与采集,通过无线通信网络将温湿度感应数据传输到上位机,经过计算后显示输出结果,实现对舰船舱室环境温湿度的监测。通过系统功能测试发现与传统监测系统相比,设计监测系统在温度和湿度2个方面的监测偏差均有所下降。     

船舶舱室内热舒适性参数的选取

为保证船舶舱室乘员的身体健康,提高其工作效率,需建立船舶舱室乘员热舒适性的温湿度环境条件。在相关热舒适性标准分析研究的基础上,通过对实船热环境测试以及对船员热感觉的问卷调查,分析总结了不同活动状态下船员的热感觉投票值与微小环境温湿度的变化规律,给出了船舶舱室内各工作部位能满足船舶舱室乘员热舒适的温湿度参数控制范围,为船舶舱室的空调系统设计提供了依据。     

露天煤炭堆场智能化环保监测控制系统研究

针对现有降尘系统作业由人工控制,存在水资源和电能消耗多、及时性差、智能化程度低等缺点,在煤炭堆场原有洒水除尘系统的基础上,对堆场粉尘数据、风向风速、温湿度等环境条件进行实时检测,结合煤炭种类、含水率、堆存量等相关参数,完成对除尘系统的智能化控制,实现科学洒水和节能减排。     

嵌入式系统在舰船温湿度控制中的应用

目前研究的舰船温湿度控制方法控制过程损耗过多,控制耗时过长。为了解决上述问题,基于嵌入式系统研究了一种新的舰船温湿度控制方法,选用三星公司生产的TSD6382G8芯片提供控制电压,内部电路采用手动复位方式,利用嵌入式系统管理平台内部操作系统进行舰船蒸汽制冷,引入显示屏显示结果,通过数据交互实现温度控制。使用嵌入式系统的人机交互界面完成除湿工作,在进行冷却除湿过程中,需要对冷却空气进行传热,实现湿度控制。实验结果表明,将嵌入式系统应用在舰船温湿度控制中,可以很好地减少控制损耗,缩短温度湿度控制响应时间。     

基于Z-Stack协议栈的船舶机舱环境监测系统设计

为提高船舶机舱的安全性,针对传统有线监测方式存在布线困难、成本高和扩展性差的缺点,设计了一套基于Z-Stack协议栈的监测系统.该系统综合了Zigbee无线网络自行愈合、组网灵活和超低功耗的优点,以CC2530射频模块为基础组成网络节点,由传感器节点把测得的温湿度值、CO2浓度和空气流速等参数经路由器或直接传递到协调器,最终传至上位机监控界面来实时显示、记录数值.试验结果表明,该系统具有功耗低、稳定性高、可开发性强等特点,满足机舱里监测实时性和数据精度的要求,同时对提高船舶自动化水平具有一定的参考和借鉴意义.     

基于Modbus的坑道温湿度监控系统的设计

设计了温湿度监控系统下位机和应用组态王软件编制的上位机监控程序,两者通过Modbus协议通讯。前者完成对温湿度的测量显示和除湿机的控制,后者用于对下位机参数读写、显示、报警、报表打印等,从而形成一套完整可靠的温湿度监控系统。系统在某部队坑道环境中投入了使用,经过一年运行,效果比较理想,应用前景广阔。     

船用定风量空调系统能量调节的研究与应用

定风量空调系统是船用中央空调系统的重要组成部分,为人员住舱和部分工作舱室提供一定温湿度和洁净度的新鲜空气。船用空调系统多采用一次回风系统,通过集中式空调器回风口设置的温湿度传感器,来控制空调器的能量调节和送风温度。然而,在回风温度受到干扰、舱内人员数量变化或末端风量被调节等情况下,舱内的实际温度将受到影响,部分舱室不能满足设计需求。某外贸船采用回风控制和典型舱室控制相结合的方法,根据不同工况下对两种控制方法的切换使用,解决了上述影响因素引起的舱内温度不稳定的情况。     

船舶交流电网绝缘监测及故障定位系统开发

针对传统船舶电网绝缘监测装置可靠性不足、受泄漏电容的影响较大、测量范围较窄、测量准确度不高等问题,以船舶IT交流供配电网络为研究对象,建立一种能够实时监测整个电网系统对地绝缘值与泄漏电容值,实现实时故障定位的系统,并结合Hausdoff距离算法进行容错计算.结果 表明:该系统可实时监测船舶电网的绝缘状态,并实现故障线路...     

DSP系统中PDT的设计与实现

在实时信号处理系统中,DSP+FPGA的系统架构具有较高的数据处理速度和较好的接口设计灵活性.提出一个DSP+FPGA架构的实时信号处理系统,分析该系统的存储器构成及工作原理,设计了该系统的PDT(peripheral device transfer)传输方式,实现了DSP的EMIF口对高速数据的读写控制.     

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。     

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）.     

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.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

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.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。