Research On Integrated Monitoring And 3D Visualization For Wreck Salvage

In recent years,with the ships at sea is increasing,the probability of sinking has also increased.Once a large tonnage ship has sunk in our main channel or port area,it will affect navigation and port operations.In order to ensure the safety of the salvage operation,it is important to get the information such as weather conditions,sea conditions,the lifting force of salvage engineering ship,sinking ship attitude,sinking depth,and seawater flow rate during salvage process timely.At present,there is no high integrated monitoring platform in salvage monitoring,and engineers can only get salvage information from a variety of display terminals.In addition,the integrated monitoring interface can only display salvage information while the wreck salvage process can’t be showed.In order to solve the problem of the integration of monitoring data and the display of salvage process,an integrated monitoring and 3D visualization system for wreck salvage is designed.Firstly,the paper analyzes the stress situation of steel strand and wire rope in the salvage process of sunken ship.The computational model of the lifting cable fatigue strength and the instantaneous maximum stress is derived,which provides the theoretical basis for the early warning of salvage monitoring.Secondly,salvage integrated monitoring module is designed which can display salvage information including sensor monitoring data of salvage field,the meteorological and marine environment forecast information from network and database information.The alarm system,report system,data connection,salvage video monitoring and other functions are developed to identified,judged and evaluated the health status of the salvage process.Then,3D visualization platform is developed in the virtual reality software Virtools Dev5.0.The data which is read timely with the Virtools server through integrated database technology can drive the virtual model move in the 3D scene and the salvage process is reproduced in the virtual platform timely.Finally the integrated monitoring and 3D visualization test platform of wreck salvage is built.The hardware and software system of the test platform are debugged and perfected so that it could be successfully applied to the actual engineering work.The integrated monitoring and 3D visualization system for wreck salvage can integrate salvage information and reproduce the salvage process timely in 3D virtual scene.It can provide favorable information support for decision-makers and makes great significance to ensuring the safety of salvage operations.