面向信息物理融合系统的多源异构数据交互模型

Heterogeneous Data Integration Method for Cyber⁃Physical System

在信息物理融合系统(Cyber-physical system,CPS)中,传统多源异构数据集成模型难以通过中间件实现异构系统间的概念层关系映射,存在系统难以扩展和传输性能低等问题。基于上述问题和挑战,提出了一个面向CPS的异构数据交互模型。设计数据对象模型实现物理系统和仿真系统高层概念映射;定义监测类和控制类元数据,针对不同的数据类型使用增量或全量字段更新以降低网络负载;基于Protobuf协议设计系统的通信模型,提高系统的扩展能力。基于该数据交互模型和高层体系结构(High level architecture,HLA)/数据分发服务(Data distribution service,DDS)系统中间件实现了一个CPS原型系统,验证了模型的可用性并对比了报文的压缩性能。

In the cyber-physical system(CPS),the traditional multi-source heterogeneous data integration model is difficult to map the conceptual layer between heterogeneous systems through middleware,which has the problems of low transmission performance and difficult system expansion.Due to the challenges above,a CPS-oriented heterogeneous data integration model is proposed.The data object model is designed to realize the high-level concept mapping between physical and simulation systems.The monitoring and control metadata are defined and the incremental or full field updates for different data types are used to reduce network load.A communication model of system is designed based on the Protobuf protocol to improve the system expansion capability.Based on the data interaction model and high level architecture(HLA)/data distribution service(DDS)system middleware,a CPS prototype system is implemented,which verifies the usability of the model and compares the compression performance of the message.