深水浮式平台监测系统研制及应用

监测系统是获得浮式平台真实情况的可靠手段,跟水池模型试验一样,对评估平台安全非常有价值。本文研究浮式平台监测系统研发要点,并在我国"南海挑战号"FPS平台上成功实施了1套包含环境条件、浮体运动和水下系泊系统的监测系统,实现了监测系统远程控制和"互联网+"数据共享,实现了较为宝贵的台风期间监测和数据传输的功能,获得了多个台风数据和超过3年的监测信息,可为今后该平台的安全评估、深水浮式平台设计反馈、现场作业支持或预警等提供数据和依据,为将来监测系统推广应用提供了典型示范。建议下一步通过海上现场监测数据来研究无法准确通过数值模拟但对立管安全影响非常大的浮式平台涡激运动(VIM)。     

基于信息平台的船舶监控系统

首先简要介绍了信息平台的发展和应用状况,接着阐述了基于信息平台的船舶监控系统的几项创新技术及其构成,并举例予以说明.最后论述了这种新监控系统的意义.     

基于嵌入式ARM平台的船舶电力监控系统设计研究

随着电力电子技术以及控制技术的发展,人们对船舶电力系统的要求也越来越高,特别是对船舶电力系统中的供电品质以及稳定性等方面。船舶电力监控系统可以有效对电力系统中电压、电流以及频率等参数进行监控,进而控制船舶电力系统的稳定运行。目前嵌入式技术在很多领域得到了应用,本文提出一种基于S3C44B0的嵌入式解决方案,对系统中的数据采集部分进行详细设计,本文设计的船舶电力监控系统具有体积小、成本低等特点,因而具有非常重要的应用价值。     

Policy considerations for wetland wastewater treatment in the coastal zone: A case study for Louisiana

Two major environmental problems currently affecting the Louisiana coastal zone are a high rate of wetland loss and high levels of surface water pollution. The application of secondarily treated wastewater to wetlands can be a means of dealing with both of these problems. The benefits of wetland wastewater treatment include improved surface water quality, increased accretion rates to balance a high relative water level rise due mainly to subsidence, improved plant productivity and habitat quality, and decreased capital outlays for conventional engineering treatment systems. Wetland treatment systems can, therefore, be designed and operated to restore deteriorating wetlands. Hydrologically altered wetlands, which are common in the Louisiana coastal zone, are appropriate for receiving municipal and some types of industrial effluent. While the U.S. Environmental Protection Agency has determined wetland wastewater treatment is effective in treating municipal effluent, it has discouraged the use of natural wetlands for this purpose. At the same time, funds are being used for the construction of artificial wetlands to treat municipal effluent. In the Louisiana coastal zone, however, wetlands are deteriorating and disappearing due to hydrological alteration and a high rate of relative sea level rise. If no action is taken, these trends will continue. Effluent discharge to existing wetlands should be incorporated into a comprehensive management plan designed to increase sediment and nutrient input into subsiding wetlands in the Louisiana coastal zone, improve water quality, and result in more economical waste‐water treatment. The authors believe that the Louisiana example serves as a model for other coastal areas especially in light of projections of accelerated sea level rise.     

基于无线局域网的舰船综合电站监控系统平台开发

电站作为船舶航行动力提供中心,其稳定性和连续性是保证船舶安全航行的关键因素之一。在互联网技术的发展下,无线局域网以其速度快、传输安全性高被广泛的应用于船舶综合电站监控系统中。本文阐述整个电站监控系统的架构,并对其组成部分进行功能描述,最后进行实验,实验结果表明本文算法切实可行。     

基于GIS平台的船舶监控系统方案研究

船舶业的迅速发展,"智慧航运"战略的提出,船舶监控系统采集信息量的扩大,船舶信息越来越复杂以及船舶事故的频繁发生,为船舶监控系统的发展既带来了机遇又带来了挑战和困难。GIS是一个获取、存储、编辑、处理、分析和显示地理数据的空间信息系统,将GIS运用于船舶监控系统,对船舶业的发展具有重大意义。本文分析GIS系统、AIS系统及船舶监控系统的整体架构,采用GIS组件式开发模式,基于组件式GIS(COMGIS),对船舶监控系统的功能进行了仿真实验研究。     

基于分布式云平台船舶监控结构体系研究

船舶行业以及新兴技术的迅速发展,使船舶监控系统的数据存储量越来越大,数据的复杂程度也越来越高,传统的单中心数据处理模式已无法满足监控实时性、高效性的要求。云计算是大数据存储、处理、挖掘分析的新技术,对于分布式船舶监控系统数据挖掘技术的提高具有重要的意义。本文从云平台架构、分布式船舶监控系统算法、船舶监控系统设计等方面研究云计算技术在分布式船舶监控系统中的运用,并进行了仿真实验。     

船舶监控系统中的大数据处理平台研究

首先阐述了基于大数据平台的船舶监控系统的功能,以及船舶监控系统的工作流程,指出研究此系统的关键技术是大数据平台任务分布式查询和作业调度,然后通过对传统研究算法的改进,设计了ITPUT分布式查询算法和Three-Queue作业调度算法,最后实验结果表明本文所改进的算法响应时间短、执行效率高。     

云计算平台中大规模电子航海信息全局监控系统

在大数据环境背景下,针对传统船舶电子信息监控系统,存在多样数据融合性计算能力差,数据多样整合处理时间长,导致出现全局监控力不足的问题。基于大数据处理技术,提出基于大数据融合的船舶动态电子信息全局监控系统设计。根据大数据融合的技术要求,创建船舶多样数据采集融合架构,通过搭建的硬件对船舶多项数据进行采集,配合引入的纵深融合算法,利用大数据融合技术对采集的多样数据进行深度融合计算,实现信息全局一体化监控。通过对比实验数据,证明设计的监控系统,在解决传统监控系统数据融合问题上,具有显著效果,满足设计需要。     

未来潜艇大气环境监测系统可行性研究

大气环境监测是潜艇生命力支持的最重要环节之一,在潜艇上应用大气环境集中监测系统已有将近40年的历史。随着人们对污染物对人体健康效应了解的深入,在密闭环境的大气环境控制中提出了更多对气体组分的监测需求。能否分析更多气体组分已经成为未来潜艇大气环境监测系统的标志性指标,为了满足更高分析能力的要求,当前存在着提高系统分散度和自动化水平以降低系统运行和维护时对资源占用的趋势。未来潜艇大气环境监测系统需融入大气环境综合控制系统,并作为系统控制功能的中枢。     

拖曳通信平台系统技术探讨

拖曳通信平台系统是潜艇在水下安全深度航行时与外界交换信息的有效手段.主要介绍平台系统的工作原理、系统组成、关键技术及实现思路、研究现状与展望.     

基于DSP平台的海上目标跟踪监测系统

针对传统海上目标跟踪监测系统目标跟踪监测性能较差的问题,提出一种基于DSP平台的海上目标跟踪监测系统。系统硬件包括图像采集模块、数据存储控制模块,其中图像采集模块主要由摄像头传感器、关联寄存器组成;数据存储控制模块主要由存储芯片、模块控制接口组成。系统软件配置为目标跟踪监测软件,通过硬件与软件相结合实现了海上目标的跟踪监测。为了验证该海上目标跟踪监测系统的目标跟踪监测性能较为优越,将该系统与基于目标选择算法的海上目标跟踪监测系统、基于卷积神经网络的海上目标跟踪监测系统、基于计算机视觉的海上目标跟踪监测系统进行对比实验,实验结果证明该系统的监测成功率更高,即目标跟踪监测性能优于传统海上目标跟踪监测系统。     

自升式海洋石油钻井平台监控数据传输协议研究

自升式石油钻井平台具有可靠性高、成本低、适应能力强等优点,在海洋石油开采领域发挥着重要的作用。在复杂海洋环境下,监控系统是实现平台正常工作的关键,直接影响到平台的安全性和可靠性。本文根据自升式钻井平台的特点,深入研究监控数据传输协议,分析现场控制层和决策层网络协议,提出性能优化方案。     

Environmental risk assessment of the most commonly transported chemicals: case study of Finnish coastal areas

The environmental hazard potential of a total of 15 chemicals that are transported through the Finnish coastal areas was assessed in this paper using a scoring method developed for accidents. The study indicates that the chemicals most commonly transported/handled in Finnish ports are methanol, sodium hydroxide solution, acids, pentanes, phenol, xylenes, methyl tert-butyl ether, ethanol and ethanol solutions. For the evaluation of the environmental hazardousness of various chemicals, a priority list of chemicals that are the most commonly transported regionally in marine environments was compiled for this study. The method used has many similarities to other commonly used scoring systems, but this study gave more weight to specific characteristics of an accidental release, water biota and impact on the environment. Nonylphenol, ammonia and sulphuric acid ranked as the most hazardous substances on the list. The results of the study can be used by rescue and environmental authorities and enterprises to improve preparedness for accidents and to mitigate the effects of accidental spills.     

分布式云平台在舰船目标检测中的应用研究

在现代海上军事领域,船舶目标跟踪监测系统一直是其重要的研究方向,其监测跟踪的精度、准确度及效率是衡量系统的3个最重要的性能指标。传统的舰船目标跟踪监测系统是基于单处理中心,监测跟踪算法的处理精度及效率已经越来越不能满足现代海上军事系统的性能要求。本文研究基于云计算的分布式平台,分析海上目标跟踪监测中的噪声滤波,结合帧间差分法及背景差分法,提出的基于分布式云平台的舰船目标监测算法,提高了算法效率。     

船舶码头系泊监控系统数据处理中的云计算平台研究

随着我国船舶业的发展,系泊作业量越来越大,系泊作业的安全、高效运行显得越来越重要,对系泊监控系统存储、处理和分析海量数据的能力要求越来越高。云计算是解决大数据处理问题而诞生的新技术、新手段,利用云计算平台的高计算和海量存储能力有利于提高系泊监控系统的运行效率。本文重点对码头系泊监控系统云平台架构、数据库、各类功能进行分析,进行基于Hadoop的HDFS上的系泊监控系统仿真实验。     

Visibility mapping in New York's coastal zone: A case study of alternative methods

Abstract

Most scenery evaluation methodologies incorporate visibility extent. In New York's coastal zone, visibility mapping for planning and project studies is complicated by low topographic relief, and diverse configurations of water edge and upland surface character. A generalized visibility model has been developed, including macrolandscape, observer, and sight‐line recording. Based on a prior shorescape study of New York's coast, the Lake Ontario Port Bay site was selected to test alternative visibility methods. Within the study site, four “landscape control points”; were chosen which provided extensive views of representative land and water forms, and surface types. For each control point, four families of visibility mapping approaches were applied: primary (field observation); secondary (topographic maps and vertical air photo analysis); tertiary (physical topographic model); and quaternary (digital terrain computer model). Major study conclusions are: the methods require different resources; all methods readily produced visibility maps; all methods, except secondary, could be used to produce perspective scenes for subsequent content evaluation; all methods except primary omitted one or more elements of the general visibility model; all methods should incorporate field work due to critical viewer environment conditions; sensitivity analysis in each method produced ambiguous zones; each view map was different, particularly in the background. An integrated, multi‐approach strategy would appear desirable for most planning and project applications.     

半潜平台动力定位系统模型预测控制器设计(英文)

This paper researches how to apply the advanced control technology of model predictive control(MPC) to the design of the dynamic positioning system(DPS) of a semi-submersible platform.First,a linear low-frequency motion model with three degrees of freedom was established in the context of a semi-submersible platform.Second,a model predictive controller was designed based on a model which took the constraints of the system into account.Third,simulation was carried out to demonstrate the feasibility of the controller.The results show that the model predictive controller has good performance and good at dealing with the constraints of the system.     

潜艇大气成分监测技术

大气成分监测系统是维护潜艇舱室环境适宜居留的最重要环节之一。潜艇中设置舱室气体分析系统已经有将近40年的历史,随着对气体污染物认识的深入以及对大气成分系统控制要求的提升,需要对大气成分监测系统的测量点、气体分析种类和气体浓度监测范围进行提升。本文介绍潜艇舱室环境大气成分监测系统的要求,并分析几种有前途的大气成分监测技术,最后论述可能的大气成分监测系统方案。     

Inland transportation system planning by life cycle impact assessment: a case study

The comparison of land and inland water transportation from economical and ecological points of view is discussed. Required freight rates for trucks and ships are calculated and compared to find which has economic superiority. From the environmental impacts of these two transportation types, the comparative environmental destruction indices for two different time-durations are estimated. All these investigations were conducted for the Yokohama–Fukuoka route in Japan. Life cycle impact assessment, a very useful tool for quantitatively evaluating the environmental influence of a product, was used to compare the environmental burden imposed by these types of transportation. Finally, the way that these results can be used for inland transportation system planning is discussed. Received: January 21, 2000 / Accepted: June 27, 2000