基于Petri网的终端区ADS-B监视系统及其可靠性研究

Research on ADS-B monitoring system and its reliabilityin terminal area based on Petri net

为辅助塔台管制人员决策,提升航空器运行安全性,提出一种以广播式自动相关监视(ADS-B)数据为数据源的终端区监视系统。首先,基于系统需求分析系统架构特征,利用面向对象Petri网(OOPN)灵活、易于模块化设计等优点,将复杂系统模块化,分别建立子系统模型,依据子系统间的交互关系建立整体系统简化模型,并分析模型的可靠性;然后,设计ADS-B数据流实时传输引擎,利用无线传输的方式提升数据使用效率,然后,设计ADS-B数据流实时传输引擎,利用无线传输的方式提升数据使用效率,有效传输虚拟系统与外部实体之间的数据;最后,基于虚幻引擎(UE4)平台,构建虚拟现实仿真系统,实时监视机场及周围一定范围内的航空器。实时监视机场及周围一定范围内的航空器。结果表明:该系统建模方法能提高系统的模块性和可靠性,增强系统逻辑结构的易分析性,构建的系统可以安全、可靠地实现终端区监视功能。

In order to assist the tower controllers in making decisions and improve the safety of aircraft operation,an airport terminal area monitoring system is proposed based on ADS-B data.Firstly,by analyzing the system architecture characteristics based on system requirements,taking advantage of OOPN's flexibility and easy modular design,the overall complex system was divided into modules and a subsystem model was established.According to the interaction between subsystems,a simplified model of the overall system was established,and the reliability of the model was analyzed.Secondly,the ADS-B real-time data transmission engine was designed to improve the efficiency of data use by wireless transmission,and realize effective data transmission between virtual system and external entity.Finally,based on the Unreal Engine 4(UE4)platform,the system for virtual reality simulation was implemented to monitor aircraft in real-time within a certain range around the airport.The analysis and test show that the modularity and reliability of the system are improved by the modeling of the system.The analytical nature of the logical structure of the system is enhanced.The terminal area monitoring function of the constructed system can be implemented safely and reliably.