The Research Of Dynamic Deployment Strategy Of Ship Information System Function Software

With the development of information technology such as software and hardware separation,display and processing separation,data and application separation,standardized hardware equipment,virtualized software,middleware and other information technologies,the ship information system adopts an open and distributed architecture with its main functions both can be implemented by loading functional software on standardized,general-purpose hardware.Under different mission modes,the ship's information system function software needs to be reconfigured according to the mission requirements;When software and hardware failures occur,the ship's information system function software needs to be redeployed according to the damage;During system maintenance and upgrade,function software must be reconfigured and redeployed according to software and hardware changes.The reconfiguration and redeployment of functional software essentially maps a logical system to a real physical system.That is,according to different task requirements,the functional software is loaded onto general-purpose hardware to achieve the established functional requirements.This paper mainly researches and performs simulation experiments from two aspects of system reconstruction and software mapping.The main work of this paper includes:Firstly,a system reconstruction model is established and a multi-level reconstruction method based on a determined strategy is proposed.The system reconfiguration decision is designed according to the resource allocation,and the scope of system restructuring is controlled through hierarchical management,which improves the speed of reconfiguration.The system reconfiguration strategy based on static configuration ensures the reliability and security of the reconfiguration process itself;Through the dynamic management of system resources,the utilization of resources by the distributed system is improved.Secondly,a software module mapping model is established and a software module deployment algorithm based on improved genetic algorithm is proposed.The algorithm takes the load balancing of the general-purpose processor as the optimization goal,improves the initialization of the traditional genetic algorithm,and the mutation crossover method.In particular,it changes the fixed inheritance and mutation probability of the traditional genetics to the adaptive probability that changes with iterative evolution to accelerate the algorithm Converge,improve algorithm accuracy,and get global optimal.Simulation experiments show the effectiveness of the improved algorithm.Finally,an experimental simulation model of system resource allocation optimization is established.According to the functional requirements of the experimental system,the basic framework of the experimental model was established.The two main modules of the resource management function(system reconfiguration and software module mapping)were functionally designed,and these two modules were implemented.Finally,the simulation test verified the dynamic deployment of ship information system function software.