Aerial pesticide application spray automatic test system

Abstract

The invention provides an aerial pesticide application spray automatic test system .The system comprises a true flight wind speed simulation device and a spray control device .The true flight wind speed simulation device comprises a draught fan device, a stabilization cavity and a shrinkage cavity .The stabilization cavity and the shrinkage cavity are connected in sequence .The draught fan device is arranged at an inlet of the stabilization cavity .The specific value of the cross section area of an inlet of the shrinkage cavity and the cross section area of an outlet of the shrinkage cavity is larger than a first preset threshold value .The spray control device comprises a water storage tank, a diaphragm pump, a guide pipeline, a spray nozzle, a laser particle analyzer and a data collection device .The spray control device further comprises a flow regulation device and / or a pipe pressure regulation device .The spray nozzle is arranged at the outlet of the shrinkage cavity .The laser particle analyzer is arranged on the side, away from the shrinkage cavity, of the spray nozzle and used for measuring the particle size of fog drops sprayed out of the spray nozzle and sending the measured particle analyzer of the fog drops to the data collection device .Through the system, the true flight wind speed can be effectively simulated, and particle size distribution of the fog drops sprayed out of the spray nozzle can be obtained directly.

Description

Technical field [0001] The invention relates to the technical field of agricultural production, in particular to an automatic test system for aerial pesticide spraying. Background technique [0002] The fixed-wing aircraft plant protection operation has the characteristics of fast speed, large spray range, large drug load, long flight time, and less restriction by terrain. Compared with traditional manual and semi-mechanized plant protection operations, its operation economic benefits are very significant. However, the problem of droplet drift caused by environmental factors such as crosswinds is still the main problem faced by fixed-wing aircraft during plant protection operations. Bring serious water and soil resource pollution, non-target crop phytotoxicity, human and animal health threats and other problems. The size of the droplet size is one of the important factors affecting droplet drift. [0003] Generally speaking, the larger the droplet size, the smaller its drift loss...

AI Technical Summary

Problems solved by technology

On the one hand, this method is greatly affected by air temperature, humidity and meteorological environment. There is a difference in particle size between the droplets produced by the nozzle and those deposited on the ground. High evaporation rates and crosswinds will greatly affect the results.

On the other hand, this method needs to coordinate the aircraft to cooperate with the experiment, the test cost is extremely high, and it is impossible to carry out the measurement of multi-parameters and large data samples

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