Development Of Simulation Training System Of The Crane And The Windlass

In merchant ships,the crane and the anchor winch,as important supporting facilities for ships,play an important role in ensuring the safe berthing and off-berthing,loading and unloading operations of ships.According to data,more than 80% of deck machinery accidents are caused by human factors.It is common for the crew to be unfamiliar with the operation and emergency procedures of the crane and the windlass,causing huge economic losses.Therefore,it is particularly important to strengthen the training of the crew on deck machinery.Improving crew’s management level of the crane and windlass by using Marine simulator,it not only meets the requirements of the STCW Convention and the Seafarer’s Competency Assessment Program,but also reduces various accidents caused by human factors.In the existing marine engine simulators,the models of the crane and the windlass are simplified to different degrees.It can only complete basic operations.But it cannot conduct more in-depth fault simulation and troubleshooting training,and without automatic evaluation function.In order to solve the above problems,this thesis combines the requirements of the China Maritime Service Center "Building an intelligent test question bank for seafarers’ competency examination" project,to carry out a more in-depth research on ship’s crane and windlass.And a set of ship’s crane and windlass simulation training system with automatic evaluation function has been developed.First of all,according to the composition and working principle of the crane and windlass system,using modular modeling methods,the mathematical models of the windlass,the crane and their hydraulic piping system and valves are established respectively.The model fully takes into account the impact of various common faults on the model.Secondly,using VC++6.0 to design and complete the calculation program of the mathematical model,showing static-state and dynamic simulation results of the anchor winch and the crane under different working conditions.The simulation results show that the model can accurately reflect the dynamic and steady-state characteristics of the actual system.The simulation result under the fault state is also consistent with the actual system fault phenomenon.This verifies the correctness of the built simulation model,and the simulation accuracy of the model can meet the requirements of evaluation training.Then,the visual operation interface of the crane and the windlass was designed using Auto CAD,and the operation program design was completed by using VC++6.0.The crane interface can realize normal start and stop,emergency braking,hoisting,slewing,luffing,replenishing oil cooling,safety limit,and troubleshooting of common faults.The windlass interface can realize the functions of normal start and stop,retraction and release of anchors,retraction and release of cables,and clutch switching;using 3ds Max and Unity3 D to create3 D physical model and virtual reality interface,enhance human-computer interaction,and make evaluation training more realistic.The interface test results show that the operation interface is friendly,the operation is smooth,the function is the same as the actual system,and the size can be automatically adjusted according to the terminal resolution.Finally,combined with the operational characteristics of the evaluation of the system,the automatic evaluation reasoning algorithm based on the change of state parameters is deeply studied,and the reasoning engine is integrated into the simulation system;the corresponding evaluation test questions are developed according to the evaluation algorithm,and the results of the test questions are used to verify The feasibility and rationality of the automatic evaluation algorithm.