The Development Of Cargo Operation Simulation Software For Liquefied Gas Simulator Based On C/S

With the popularization of shipping automation and the widely used network technologies in the shipping automation, the marine ship simulation training system will become more perfect. The simulation training software which based on network can inspect any computer in LAN (local area network), then feed back and control the information from it. The system could help professionals managing more computer equipments under the same condition. In that case, we could save the human resources and reduce cost and expenditure. At the same time, there will be massive amount of data which need be dealt with to fulfill the need of the simulation system. The server sends data and instructions to the client which connected to the same LAN or WAN (Wide Area Network), then the client makes some responses when it receives the information, such us operation logs and alarm messages, then writes the data back to the database of the server while should do some processing to achieve the intelligent inspect.The real-time simulation software for Liquefied Gas vessel is promoted from the stand-alone version to the network version that can provide network-based training to the trainees. The coach-terminal can monitor and control trainees terminals in long-distance in a LAN by communications between the two terminals, ultimately the students can obtain most knowledge and operator regulation of the Liquefied Gas vessel's equipment.This thesis presents the development process of real-time simulation software based on Client/Server model for Liquefied Gas vessel. It gives a detailed explanation as follows: first, model mechanism of the Liquefied Gas vessel system has been discussed. Then, four systems have been simulated: Cargo Handling System, Reliquefaction System, Inert Gas and Dry Air System, Ship Body Modeled and Strengthen System. Later, the thesis introduces a way to achieve remote control. There will be some problems about the bad real-time transmission and distortions during the remote control if we only transfer data of the screen image; in another way if we only transfer the simulation data, the numerous controls will have bad real-time transmission. So we combine these two kinds of transmission way to solve this problem. At the final part, whole software frame and transmission algorithm are described, and the operation procedure of this system has been given.The implemented system has been tested in local area network. It was running in good condition.