Patent AU-2013268170-B2 (AU)
Title: System and method for providing information on fuel savings, safe operation, and maintenance by real-time predictive monitoring and predictive controlling of aerodynamic and hydrodynamic environmental internal/external forces, hull stresses, motion with six degrees of freedom, and the location of marine structure
Inventor: LEE MICHAEL MYUNG SUB
IPC: B63B71/20
Filed: 2013-05-30
Granted: 2017-09-28
Abstract: The present invention relates to a system and method for monitoring physical changes in a marine structure. More particularly, provided is a system for monitoring physical changes in a marine structure, comprising a complex optical measuring instrument which senses the behavior and structural changes of the marine structure using at least one optical sensor using a fiber optic Bragg grating. According to the present invention, a measurement method using an optical sensor is implemented to accurately monitor physical changes in the marine structure on a real-time basis. The present invention relates to the real-time predictive monitoring and controlling of aerodynamic and hydrodynamic environmental internal/external forces, hull stresses, motion with six degrees of freedom, and the location of a marine structure. More particularly, the present invention relates to a method for providing information on fuel savings, safe operation, and maintenance by synthetically measuring changes in a marine float, such as the slope in each direction, draft, trim, corrosion, erosion, and cracks of the marine float, and the pressure, stresses, vibrations, and frequencies applied to the marine float, which are caused by aerodynamic environmental internal/external forces and predictively controlling the marine structure based on the measurement. According to one aspect of the present invention, provided is a method for providing information on fuel savings, safe operation, and maintenance by the real-time predictive monitoring and the predictive controlling of aerodynamic environmental internal/external forces, hull stresses, motion with six degrees of freedom, and the location of a marine structure, the method comprising: a first step of accumulating data relating to the internal/external forces affecting the marine structure, the internal/external forces being the flow of gas or fluid on the outside of the marine structure, and data relating to the reaction of the marine structure to the internal/external forces through a linear test in a water reservoir or a wind tunnel so as to generate a lookup table, and storing the lookup table in a database; a second step of measuring the internal/external forces using a time-of-flight method in an actual voyage of the marine structure and storing the measured internal/external forces in the database; a third step of comparing the internal/external force data measured in the second step and the data relating to the internal/external forces stored in the lookup table in the first step, and predicting data relating to the reaction of the marine structure; and a fourth step of controlling, on a real-time basis, the attitude or voyage path of the marine structure using the predicted data relating to the reaction of the marine structure.