Humidity sensing ceramic, and preparation method and application thereof

Abstract

The invention provides a humidity sensing ceramic and a preparation method thereof. An organosilane modification layer is arranged on the surface of a humidity sensing ceramic substrate, and the surface contact angle is 85 to 95 degrees. The organosilane is used for modifying the surface of the humidity sensing ceramic; the contact angle of fog drops deposited on the surface of the ceramic is changed; the diffusion coefficient of the fog drops on the surface of the humidity sensing ceramic is reduced. The invention also discloses a fog drop deposition sensor prepared by the humidity sensing ceramic and application of the fog drop deposition sensor to the unmanned aerial vehicle chemical spraying fog drop deposition characteristic detection. The fog drop deposition sensor provided by the invention has the advantages that information such as fog drop average particle diameter, fog drop density, fog drop covering rate and distribution uniformity can be accurately detected; meanwhile, a detection resistor reflects the relative humidity change; the fog drop deposition quantity comparison conditions of the chemical spraying specific regions can be obtained.

Description

technical field [0001] The invention relates to the field of agricultural aviation spraying detection and modern plant protection research, in particular to a moisture-sensitive ceramic and its preparation method and application. Background technique [0002] At present, the country uses more than 300,000 tons of pesticides and more than 1 million tons of preparations for the prevention and control of pests every year. Most of the simple and small sprayers used in rural areas make the utilization rate of the pesticides that can reach the target crops generally 30% to 35%, and the other 70% to 80% of the pesticides are lost or lost to non-target crops, soil or water. While causing a great waste of resources, it also pollutes the soil and water quality around the farmland, causing great damage to the environment. [0003] Aerial spraying not only has the advantages of real-time and rapid treatment of sudden and large-scale pests and diseases, but also can use GPS navigation t...

AI Technical Summary

Problems solved by technology

Although the droplet deposition sensor can accurately reflect the amount of droplet deposition, it cannot provide technical parameters such as droplet size distribution.

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