To improve the training effect of marine engine room simulator in the aspect of training marine engineer and save the cost of training in real ships, this paper extends the framework of traditional marine engine room simulator by taking full advantage of visual simulation technology and the configuration of framework is presented. The framework is divided into three parts by functionality which is three-dimensional engine room visual simulation side, server side and two-dimensional marine engine room simulator side and the function of each part is also described in details. To implement the function of interaction and collaborative operation of marine engine room simulator under this framework, communication protocol between three-dimensional side and two-dimensional is established and processing mode of interactive entity is designed. This marine engine visual simulation training system has been applied to actual training, achieved better training effect and save the cost of training in real ships of marine education effectively.
Fault diagnosis for marine engine system can be achieved by cluster process. We propose a multiple clusters method using label propagation model repeatedly to cluster for fault samples. Due to randomness in label propagation, some classes which are not easy to be found in single cluster can be found. To verify the performance of this method, the samples from self-manufactured marine engine room simulator are used in fault diagnosis simulation experiment. Both fault analysis results and fault diagnosis results are completely correct, and fault pattern which is not in fault history data can be recognized.
Cluster methods can be used for fault diagnosis of marine diesel engine. We propose a cluster method by assigning a class label to each sample and updating it according to the class label probability. Due to the random walk process in cluster process, multiple results are obtained, and some classes can be found more easily. Fault diagnosis simulation experiment is executed on a self-manufactured marine engine room simulator to verify the method performance, and we obtain the correct graphical and number results. Both fault patterns in fault history and new fault pattern can be recognized.
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