基于Petri网的情境感知系统建模与仿真*

情境感知系统对情境信息的利用程度在不断提高,对服务的多样性提出了更高要求,但是传统的情境感知系统的建模方法难以满足对系统动态描述和模拟的需求。通过对传统的Petri网进行扩展,提出了情境感知系统的赋时着色Petri网模型;并结合仿真工具CPN Tools对模型进行模拟和验证,进而发现系统设计中存在的潜在不足,对其优化改进。以痴呆老人智能辅助系统为例,证明了该方法的有效性。

Context-aware system modeling and simulation based on Petri net

The context-aware system has a highly demand in the context information utilization and the service diversity, but traditional methodologies are incapable of modeling and simulating the context-aware applications in a dynamic environment. This paper proposed a context-aware timed color Petri net by extending the traditional Petri net and took the CPN Tools as the simulation tool to verify and simulate the model, in order to find out the shortage of the context-aware system designed and improved it. The described methodology had been successfully proved by the case of smart assisting system for dementia.