| The transportation scenes in Underground Mine Locomotive Unmanned System(UMLUS) mainly include:registration start and hazard mitigation, cancellation, wireless section transition, etc., one of the more important is the wireless section transition(WST). WST realizes mine locomotives security transfer function between the adjacent WST jurisdiction sections, ensures locomotive switch unattended, does not cause locomotive brake at the same time, realizes smooth transition. The formalization method of wireless section transition process in formal modeling and verification analysis is a means of ensuring system security. This thesis mainly uses the UML extension model and the hierarchy of colored Petri net for wireless validated section transition process and its real-time performance analysis, to ensure that the design can satisfy the demand of system.This thesis, by combining the semi-formalized UML modeling method and the formalized Petri net modeling method together, designs the modeling and validation method of the UMLUS system WST scenes based on the UML extension model and the hierarchy of colored Petri net, though the UML model for WST preliminary function modeling, regarding the hierarchy of colored Petri net as a verification method of the model, through CPN Tools, the status report is generated, and the boundedness, the accessibility, the reachable status space of the model are analyzed. At the same time, for the real-time characteristics of the periodicity communication interaction message in WST, modeling verification method of UMLUS system based on temporal hierarchical colored Petri net is put forward; the communication used in the WST process is WLAN, specifically, deploy directional AP network in the track on both sides, and in the running process of locomotive will produce the hand-off delay and sudden interruption problem, the real-time performance of the process can be obtained through simulation. |
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