Research On Modeling Method Of Transportation Cyber-Physical System

Cyber-Physical Systems (CPS) has both continuous process and discrete operation in the application of traffic CPS. Therefore, based on the extended model theory, this paper introduces hierarchical model, colored set and timed attribute on the basis of prototype Petri Net, and proposes a Hierarchy Colored Timed Petri Net (HCTPN) model. In order to verify the usability of the proposed model, we modeled the vehicle and road units of Bus Rapid Transit (BRT), and simulated the scene of multiple passengers boarding. The final experiment showed that the proposed improved model could solve the safety problem of passengers boarding and alighting.