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《Modern Electronics Technique》 2017-20
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Application of QNX-based multithreading technology in embedded training system for ship maneuvering

WANG Liwei;LIU Changbo;HU Kun;ZHANG Jianhua;LI Jianhui;Navy Submarine Academy;  
In order to resolve the problems of data display delay,interface buffering,and system crash during software design of the embedded training system for ship maneuvering,the QNX OS-based multithreading technology is imported for design improvement of system software program. The simulation experiment was carried out to detect the function and real-time performance of the system. The results show that the system software can simulate ship motion and realize the training function,the design improvement of multithreading program effectively resolves the problems of data display delay,interface buffering and system crash,the system can accomplish real-time resolution of the model and real-time display of status parameters,and the data update interval(no more than 2 ms)can meet the real-time requirement.
【Fund】: 国家自然科学基金资助项目(51179196)
【CateGory Index】: TP311.52;U676.2
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