An Innovative Multifunctional Buoy Design for Monitoring Continuous Environmental Dynamics at Tianjin Port

Hao, Zhang; Zhang, Dianjun; Zhang, Anmin

doi:10.1109/access.2020.3024020

Cited by 11 publications

(6 citation statements)

References 25 publications

(27 reference statements)

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“…where R b is the direct irradiance conversion factor, which represents the ratio of direct normal irradiance to horizontal direct irradiance on the tilted surfaces, and DN I is direct normal irradiance. They can be given by Equations ( 7)- (9).…”

Section: The Model Of Tilted Surface Irradiancementioning

confidence: 99%

“…The effect of the wave environment on the photovoltaic system cannot be ignored. Zhang Hao et al [9] designed a PV power supply system for the buoy with a maximum power consumption of 0.028 kWh per day, using four PV panels with a rated power of 100 W. However, they did not calculate the power generation of each unit in detail, nor did they consider the influence of the installation angles. Tomisa et al [10] used two sets of PV modules placed horizontally and vertically, respectively, to power the buoy.…”

Section: Introductionmentioning

confidence: 99%

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Design and Optimization of PV Power Supply System for Marine Buoys

Wang,

Song,

et al. 2023

JMSE

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Marine buoys need to operate in high sea areas far from land for a long time. Therefore, how to provide a long-term power supply for the buoy system is critical to be addressed. Photovoltaic (PV) power supply systems are the most commonly used power supply method for marine buoys. Due to the limitations of the buoy structure and considering the rotation of the buoy in the ocean, most of the PV modules are placed in a four-sided enclosure. The output performance of the PV power supply system in this placement is affected by the tilt angle produced by waves. However, there are few relevant studies on the actual power generation performance of PV power supply systems for marine buoys, and there is a lack of methods for power generation performance analysis. In order to meet the power requirements of the marine buoy, a large design margin must be left. It increases the cost of marine buoys. In this paper, second-order Stokes waves are used to simulate waves of different levels by varying the wave height and frequency. The motion characteristics of the marine buoy are analyzed using ANSYS-AQWA under calm-rippled, smooth, slight, and moderate conditions. Combined with the tilted surface irradiance calculation model to get the variation law of solar radiation of PV modules under dynamic conditions, the effect of different tilt angle PV modules on the output of PV system under dynamic conditions was also studied. The experiments show that for every 5° increase in the tilt angle of the PV modules the output power of the system decreases by 3% on average. As the tilt angle of the PV modules increases, the impact on the system output performance is more pronounced. The output power decreased by 69.5% when the PV modules were tilted at an angle of 90°, and the PV system electrical parameters were similarly affected. By comparing the influence of different tilt angles on the power supply performance of PV modules, we optimize the design of the PV power supply system of the buoy. This enables the designers to maximize the use of limited area and space while reducing the cost and extending the power supply time and service life of the buoy.

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Section: The Model Of Tilted Surface Irradiancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Optimization of PV Power Supply System for Marine Buoys

Wang,

Song,

et al. 2023

JMSE

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“…Among them, Figure 6a shows the data resource management, Figure 6b shows the data acquisition management, Figure 6c shows the data conversion management and Figure 6d shows the data fusion management. At the same time, the system provides users with information services such as ships, waterways, hydrometeorology and multifunctional buoys [40], as shown in Figure 7. More specifically, Figure 7a shows the data dictionary maintenance, Figure 7b shows the release mode management, Figure 7c shows the published data definition and Figure 7d shows the service publication status.…”

Section: E-navigation Development Platformmentioning

confidence: 99%

Design and Development of Maritime Data Security Management Platform

Zhang

et al. 2022

Applied Sciences

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Since the e-Navigation strategy was put forward, various countries and regions in the world have researched e-Navigation test platforms. However, the sources of navigation data are multi-source, and there are still difficulties in the unified acquisition, processing, analysis and application of multi-source data. Users often find it difficult to obtain the required comprehensive navigation information. The purpose of this paper is to use e-Navigation architecture to design and develop maritime data security management platform, strengthen navigation safety guarantee, strengthen Marine environment monitoring, share navigation and safety information, improve the ability of shipping transportation organizations in ports, and protect the marine environment. Therefore, this paper proposes a four-layer system architecture based on Java 2 Platform Enterprise Edition (J2EE) technology, and designs a unified maritime data storage, analysis and management platform, which realizes the intelligent, visualized and modular management of maritime data at shipside and the shore. This platform can provide comprehensive data resource services for ship navigation and support the analysis and mining of maritime big data. This paper expounds on the design, development scheme and demonstration operation scheme of the maritime data security management platform from the system structure and data exchange mode.

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“…It is worth noting that the traditional fixed-point sampling monitoring method has limitations in the global perception of port water quality. The flexibility and customizability of the system are relatively poor [10].…”

Section: Introductionmentioning

confidence: 99%

Parallel Intelligent Monitoring System of Port Water Quality Based on the ACP Method

Guo,

Jiang,

Chu

et al. 2024

JMSE

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With the rapid development of port construction and the shipping industry, port water quality issues are of great concern. This is always a challenging task due to the frequent human activities and dynamic processes involved. A parallel intelligent water quality monitoring system is therefore proposed to ensure the effective monitoring and intelligent control of water pollutants. The real monitoring system and the artificial monitoring system of port water quality are established by applying artificial systems, computational experiments and parallel execution (ACP method). Both systems interact with each other and execute in parallel. The artificial monitoring system simulates complex scenarios, while the real monitoring system feeds the artificial monitoring system with actual monitoring data. By means of data-driven and model-driven approaches, the two systems can compute, observe and evaluate to control, manage and train models. Through the continuous optimization between the two systems, the efficiency and accuracy of the water quality monitoring system could be improved. Technical support can be further provided for the planning of water quality monitoring sites, implementation of monitoring tasks, allocation of emergency resources, etc. As in-situ monitoring data are obtained, computational experiments and parallel executions could be conducted to achieve the ultimate goal of port water quality management.

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An Innovative Multifunctional Buoy Design for Monitoring Continuous Environmental Dynamics at Tianjin Port

Cited by 11 publications

References 25 publications

Design and Optimization of PV Power Supply System for Marine Buoys

Design and Optimization of PV Power Supply System for Marine Buoys

Design and Development of Maritime Data Security Management Platform

Parallel Intelligent Monitoring System of Port Water Quality Based on the ACP Method

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