Abstract:

Unmanned aerial vehicles (UAVs) face long time consumption and low work efficiency in inspecting fire hazards around transmission lines in mountainous areas and performing early fire extinguishing operations. In order to solve these problems, the existing UAV inspection and fire extinguishing processes were merged and reorganized. Firstly, based on the existing research on UAV inspection and fire extinguishing processes, process program analysis and Petri net model method were adopted, and the processes of UAV inspection and fire extinguishing were analyzed to obtain the corresponding operation process. The correlation matrix and invariant analysis method were used to test the model to ensure its applicability. Then, the two independent steps were unified, and the repeated steps were merged based on the principle of eliminate, combine, rearrange, and simplify (ECRS). The final optimized process scheme was thus obtained. Finally, through the simulation of the same case, the difference between the model before and after the integration optimization was analyzed and calculated. The results show that the optimized scheme based on Petri net can greatly improve the rapid response ability of UAVs for fire extinguishing after receiving the fire source coordinate position information and reduce the repeated operation process and unnecessary time consumption. Compared with that of the traditional operation scheme, the operation time of the optimized process scheme is reduced by 39.1%, and the handling distance is reduced by 50%.

Key words: integrated fire inspection and extinguishing, operation process, UAV inspection, UAV fire extinguishing, Petri net, process optimization