Liu, Y.

Song, J.

Xiongkui He, B.

Zeng, A.

English

JKI Open Journal Systems (Julius Kühn-Institut)

SuproFruit 2015 – 13th Workshop on Spray Application in Fruit Growing, Lindau, Germany, 15. – 18. July 2015  72 Julius-Kühn-Archiv, 448, 2015 Precision spraying techniques using an automatic infrared system to detect the target in a Chinese orchard B. Xiongkui He, J. Song, Y. Liu, A. Zeng Centre for Chemicals Application Technology (CCAT), China Agricultural University, Yuanmingyuan West Road No:2, Haidian District Beijing, China 100193.  Abstract There is an urgent need for new chemical application techniques and sprayers in Chinese orchard spraying, because of the requirements of environment, safety for food and operator during chemical application in Chinese orchards. A new tractor-mounted, automatic target-detecting system was designed and developed which incorporates electrostatics and infrared sensor is fitted to an air-assisted orchard sprayer. The spraying system was developed to meet the demand of chemical pest control in orchards. This sprayer is lightweight, highly efficient, reduces pesticide use and is environmentally-friendly. The techniques of automatic target detection, electrostatics, and air-assisted spraying were combined within this system. The infrared ray sensor was used for this system to detect the target, the sprayer can automatically open and stop the nozzle for spraying chemical liquids, when the infrared sensor find target of tree, the nozzle will be opened, when the infrared sensor find the interstitial space between the trees, the sprayer will automatic stop to spray.  The electrostatically charged droplets are projected towards the target by the assistance of an air stream that increases droplet penetration into the canopy. Experimental results show that the new automatic target-detecting orchard sprayer with an infrared sensor can save more than 50 to 75% of pesticides, improve the utilization rate (above 55%), control efficiency, and significantly reduce environmental pollution caused by the spray application. At the same time the key technological problems related to air-assisted low volume and electrostatic spraying are solved. Acknowledgements This research was funded by National Natural Science Foundation of China (NSFC) (31470099) & China public calling (Agriculture) Research Project (201203025). The authors wish to thank the technical staff of CCAT (Centre for Chemicals Application Technology of China Agricultural University) Key words. 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Precision spraying techniques using an automatic infrared system to detect the target in a Chinese orchard

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Precision spraying techniques using an automatic infrared system to detect the target in a Chinese orchard

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