Applications to Marine Disaster Prevention: Spilled Oil and by Naomi Kato

By Naomi Kato

This e-book makes a speciality of the hot result of the examine venture funded by way of a Grant-in-Aid for clinical learn (S) of the Japan Society for the promoting of technology (No. 23226017) from FY 2011 to FY 2015 on an self reliant spilled oil and gasoline monitoring buoy process and its purposes to marine catastrophe prevention platforms from a systematic viewpoint. This e-book spotlights learn on marine catastrophe prevention platforms on the topic of incidents related to oil tankers and offshore structures, forthcoming those difficulties from new clinical and technological views. the main crucial element of this ebook is the improvement of a deep-sea underwater robotic for real-time tracking of blowout habit of oil and fuel from the seabed and of a brand new form of independent floor car for real-time monitoring and tracking of oil spill unfold and flow at the sea floor utilizing an oil sensor. The undertaking of those robots is to supply the simulation versions for fuel and oil blowouts or spilled oil drifting at the sea floor with measured information for extra precision of predictions of oil and fuel habit.

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33 Fig. 2 SOTAB-I Computer The SOTAB-I program is running on the Windows XP embedded operating system. 0 was selected as the integrated development environment (IDE) to develop the GUI. At the beginning of the operation, the magnet that is put on the magnetic switch is removed and the system is powered on. After the operating system is started, the executable program of the GUI is launched automatically. The average CPU usage when the program is fully executing is 3 %. The robot processor connects to the sensors through RS-232 serial ports.

Fig. 13 Serial data acquisition Fig. 14 Software architecture of SOTAB-I GUI Fig. 15 Application layer, general structure of thread execution odically. A sleep command is used to determine the frequency of the execution of the thread. At the beginning of the execution of the program, every task is initialized. The current thread runs sequentially through the instruction till the end. Then, the execution of the current thread is stopped until at least Tsleep has elapsed. The middleware layer provides services to the upper application to facilitate the communication, input/output, and data management.

Since Tr > Tc , the buoyancy control device reduced the buoyancy level. As SOTAB-I’s buoyancy level was decreasing and the depth was increasing, Tc became larger and Tr became smaller. When the buoyancy level was stable at the minimum buoyancy level of 20 %, Tc increased only slightly. While at the minimum buoyancy level, SOTAB-I was diving with maximum speed, causing Tr to decrease at a faster rate than before. When Tc Tr – Tm , the buoyancy control device started to increase the buoyancy level again.

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