| General Secretary Xi Jinping once said,"Clear waters and lush mountains are mountains of gold and silver." This is an important judgment of ecological progress.which shows the magnitude of protecting nature.Due to China’s unique forest geographical environment and history of natural disasters,China is a country with many forest fire cases in the world.From the end of 2000 to 2019,the total number of forest fire incidents in China is about 232,275.Every year,the average number of large-scale forest fires in China’s forests is about 20,000 times,and the forest area of the affected areas reaches the national average of nearly 977,500 hectares per year.Although the forest resources in the north of China are rich now,the summer forest fire accidents in all parts of China is also one of them.Forest fire,all in all,is a natural hazard,with strong social suddenness and great harm.It will not only have a certain impact on the safety of people’s lives and property,but also have a tremendous impact of the ecological balance,national forest resources and national economic development.In the face of the increasingly serious problem of forest fire fighting,there are many deficiencies in the traditional fire fighting methods.For example,the area of the forest is vast,and the daily forest safety patrol needs the staff to spend a huge amount of manpower,material and financial resources,which is very low efficiency.It is impossible to know and monitor the forest fire situation in real time and effectively prevent the occurrence of forest fire through daily artificial patrol.Forest fire investigation has a certain degree of management blind area,manual patrol can not be timely investigation,the progress is slow,the patrol area is small.Artificial patrols sometimes directly interfere with other wildlife habitats.Then the fire UAV can patrol the artificial patrol exists in the blind area,reduce environmental restrictions,increase the area of action;The time spent on fire UAV patrol is greatly shortened and the efficiency is improved.Fire UAV can also independently plan the inspection route to solve the problems existing with the traditional manual patrol;The fire-fighting UAV can plan the forest patrol track automatically,combined with digital image transmission technology and GPS technology and other high-tech integrated application in the forest fire patrol work,can solve the problem of remote places which can not be taken into account by the forest fire ground patrol.Fire UAV also has a stable and diverse intelligent load aerial photography equipment,data preservation integrity;Accurate data can still be obtained under dark and smoky conditions;Real-time transmission of images,feedback scene quickly and other advantages.With the development of firefighting drones,the number of forest fires in China has,in general,been decreasing.In 2019,there were 2,345 forest fires in China,133 fewer than in 2018,and a decrease of 5.37 percent.However,how to effectively plan an efficient and feasible flight path is still a difficult point in the future development of firefighting UAV.Based on this,this paper proposes a fire-fighting UAV track proposing based on the improved sparrow search algorithm.Above all,the shortcomings of traditional fire fighting methods are analyzed and studied.Secondly,the fire-fighting UAV flight path planning model is constructed.Then,based on the intelligent characteristics and advantages of sparrow search algorithm,this algorithm is innovated,and a fire-fighting UAV track planning algorithm based on the improved sparrow search algorithm is proposed.Finally,based on the discrete points of fire UAV path planning simulation platform experiment environment,combine the sparrow search algorithm of the improved solution of UAV flight path planning more conditions,through the simulation experiments show that the proposed algorithm to solve the above problems,has realized the current fire scout uavs specialization,integration and intelligentization,etc. |
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