Air Pollution Source Location Technology And Experimental Research Based On UAV

With the rapid development of industrialization,the problem o f air pollut ion is beco ming increasingly serious.When an air pollut ion accident occurs,if the environmental depart ment can’t quickly locate the source of the pollut ion and further control the spread of t he pollut ion accident,it will cause serious harm to the eco logical environment and human’s healt h.In China,the research of locat ing atmospheric po llutant sources has achieved certain results,mainly by real-t ime mo nitoring of fixed mo nitoring stat ions and active olfactory t echno logy o f mobile robots.UAV have hig h maneuverabilit y and fast response capabilit ies which has unique advantages of the tracking and posit ioning o f po llutants in the air.In this paper,four-rotor drones are used as a mo bile mo nitoring platform.Based on the summary and reference o f mo bile robot active o lfactory techno logy,the fo llowing specific research work is carried out:(1)Design o f background concentratio n field for locat ion o f at mospheric pollut ion source.The commo nly used pollutant diffusio n models are analyzed,using Mat lab and Fluent software,a Gaussian steady-state smooth concentration field and a disco nt inuous concentration field under co mplex turbulent condit ions were used to test the location algorithm o f atmospheric pollut ion sources.(2)Research on the algorithm for locat ing atmo spheric po llutant sources.The zigzag algorithm was improved and combine d wit h the spatial variat io n of atmospheric po llutant concentration,a variable step size zigzag-concentration gradient atmospheric pollutant source locat io n algorithm was proposed,and the superiorit y of the algorithm was verified by simu lat ion and analysis.(3)Design of Air Po llut ion Source Location System Based on UAV.Built a mo bile carrying platform for quadrotor drones,hardware modules such as a gas mo nitoring mo dule and an obstacle avo idance module were constructed,and the software design o f the air po llutant source posit ioning system was co mpleted.(4)Design o f Air Po llut ion Source Location Experiment Based on UAV.An experimental enviro nment for odor source localizat ion was set up artificially,and an odor source localizat ion experiment based on a drone was performed to verify the feasibilit y o f an air pollutant source localizat io n system based on a drone.