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ship performance and navigation data compression and communication under autoencoder system architecture

Journal of Ocean Engineering and Science 2018年第2期3卷 133-143页

作者： Lokukaluge P.Perera B.Mo UiT The Arctic University of Norway TromsoNorway SINTEF Ocean TrondheimNorway

Modern vessels are designed to collect,store and communicate large quantities of ship performance and navigation information through complex onboard data handling processes.That data should be transferred to shore based data centers for further analysis and storage.However,the associated transfer cost in large-scale data sets is a major challenge for the shipping industry,today.The same cost relates to the amount of data that are transferring through various communication networks(i.***.satellites and wireless networks),i.***.between vessels and shore based data centers.Hence,this study proposes to use an autoencoder system architecture(i.e.a deep learning approach)to compress ship performance and navigation parameters(i.***.reduce the number of parameters)and transfer through the respective communication networks as reduced data sets.The data compression is done under the linear version of an autoencoder that consists of principal component analysis(PCA),where the respective principal components(PCs)represent the structure of the data set.The compressed data set is expanded by the same data structure(i.***.an autoencoder system architecture)at the respective data center requiring further analyses and storage.A data set of ship performance and navigation parameters in a selected vessel is analyzed(i.***.data compression and expansion)through an autoencoder system architecture and the results are presented in this study.Furthermore,the respective input and output values of the autoencoder are also compared as statistical distributions and sample number series to evaluate its performance.

关键词： Autoencoder ship performance and navigation information ship energy efficiency Data compression Data communication Principal component analysis

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Investigate the energy efficiency operation model for bulk carriers based on Simulink/Matlab

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Journal of Ocean Engineering and Science 2019年第3期4卷 211-226页

作者： Tien Anh Tran Faculty of Marine Engineering Vietnam Maritime UniversityHaiphong 180000Vietnam Marine Research Institute Vietnam Maritime UniversityHaiphong 180000Vietnam

The world is facing great challenges regarding the energy crisis and environmental pollution.One of the main challenges is the increasing number of ships with a lot of different types and sizes.In this research,it is essential to analyze the operational energy efficiency of sea-going ships since the previous studies have concentrated on the inland river ships.This working is carried out by analyzing of the energy efficiency operation for large size ships such as bulk carriers,container ships,etc.based on the resistance characteristics of different navigation environment factors.A numerical model of main engine energy efficiency operation was considered using the energy efficiency measure of IMO(International Maritime Organization),in particular using the energy efficiency Operational Indicator(EEOI)as a monitoring tool in this research.This EEOI numerical model was established and simulated through Simulink/Matlab and verified by the collected data from a certain vessel in Vietnam.The EEOI model was simulated under the different navigation environment conditions including various engine speed,wind speed,wave height,and water speed.After that,the simulation results of this research will be compared with experimental database of a certain bulk carrier namely M/V NSU JUSTICE 250,000 DWT.The results indicated that it is important to consider the main engine speed appropriately in ship operation in order to save energy onboard and reduce the greenhouse gas emission problem.

关键词： ship energy efficiency Bulk carrier Navigation environment EEOI IMO

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A research on the energy efficiency operational indicator EEOI calculation tool on M/V NSU JUSTICE of VINIC transportation company,Vietnam

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Journal of Ocean Engineering and Science 2017年第1期2卷 55-60页

作者： Tien Anh Tran School of energy and Power Engineering Wuhan University or TechnologyWuhan 430063PR China Vietnam Maritime University 484 Lach TrayNgo QuyenHai PhongViet Nam

Nowadays,the development of science and technology brings the innovations and resolutions in aims with increasing the benefits and incomes for companies and producers.Additionally,the development of nation’s economic associates with environmental protection.In the field of shipping transportation,the increasing in a number of ships operates then International Maritime Organization IMO’s regulations become gradually more tightly about the environmental protection.EEOI-energy efficiency Operational Indicator is an operational measure tool for assessing the ship energy efficiency and CO 2 emission to the environment.Furthermore,the research status is about ships energy efficiency management also has the optimistic trends and more effective.In the world,there are a lot of ships energy efficiency researches in aim with enhancing the energy efficiency and environmental protection.For instance,the voyage optimization,increasing the propulsion efficiency of ships,reducing the resistances,etc.However,in Vietnam,there are a lot of shipping transportation companies with different types of ship but the number of research about ships energy efficiency management also restrict.Since this research was carried out and applied the energy efficiency measure tool of International Maritime Organization(IMO)for assessing all ships in Vietnam.The above workings were conducted by EEOI calculation tool for a certain ship with name M/V NSU JUSTICE 250,000 DWT of the VINIC shipping Transportation Company,Vietnam.

关键词： ship energy efficiency EOI SEEMP IMO Bulk carrier

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