Research On Real-Time Database And Its Application To Simulation System

At present, the real-time database has become one of popular computer technologies, and one of important research fields of modern database gradually. The real-time database is a database system with time limiting data and transactions. Its correctness depends not only on the logical correctness, but also on the timeliness of its actions. The real-time database has a series of new theories, concepts, methods and technologies, and it is more than a combination of database and real-time system. In the application fields with strict timing requirements, such as data communication, real-time simulation, weapon guidance, the real-time database can solve the problems that the existed database technology cannot solve better. So it is necessary to research and apply the technology further to satisfy the application requirements in these new fields.Firstly, the theoretical system of real-time database is analyzed systematically in the paper. Comparing real-time database with existed database technologies, various particular features of real-time database are discussed for the real-time application; The basic theories of real-time database are expounded completely, such as the real-time database module, real-time transaction scheduling and data processing etc.Secondly, the real-time database in a simulation system is studied, and its requirements and features are analyzed in the paper; And the basic framework of distributed interactive simulation system and the architecture of the real-time database in simulation system are established.Lastly, the real-time database system is implemented in marine fuel boiler simulator, which can simulate not only the real operation processes of marine fuel boiler, such as start-up, running and stop, but also various control processes. The real-time database is applied to this simulator as a core component, which creates a real-time environment and provides various real-time services.