Water quality monitoring device based on unmanned aerial vehicle

The invention relates to an unmanned aerial vehicle-based water quality monitoring device, which comprises an unmanned aerial vehicle main body, a shell, a monitoring component, a fixing rod, a depth monitoring component and a sampling cylinder, the shell is detachably installed at the bottom end of the unmanned aerial vehicle main body, a winding component is arranged in the shell, a pull rope is wound on the winding component, and the fixing rod is detachably installed on the shell. One end of the pull rope penetrates out of the shell, and the monitoring component is arranged outside the shell and used for monitoring water quality; according to the device, after the descending depth of the fixing rod is set, automatic sampling can be carried out in the depth through the arrangement of the sampling barrel, then the device is carried on the shore, water liquid in the sampling barrel is poured into the detection box, the quality of the water liquid can be detected on site in time, and meanwhile, the detection