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United States Department of Agriculture

Agricultural Research Service

Research Project: BIOLOGICAL, MICROCLIMATE, AND TRANSPORT PROCESSES AFFECTING PEST CONTROL APPLICATION TECHNOLOGY

Location: Application Technology Research Unit

Title: Delay times of a LiDAR-guided precision sprayer control system

Authors
item Shen, Yue -
item Zhu, Heping
item Liu, Hui -
item Chen, Yu -
item Ozkan, Erdal -

Submitted to: Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: August 10, 2013
Publication Date: August 20, 2013
Citation: Shen, Y., Zhu, H., Liu, H., Chen, Y., Ozkan, E. 2013. Delay times of a LiDAR-guided precision sprayer control system. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual Meeting, July 21-24, 2013, Kansas City, Missouri. ASABE Paper No. 131594649.http://dx.doi.org/10.13031/aim.20131594649.

Technical Abstract: Accurate flow control systems in triggering sprays against detected targets are needed for precision variable-rate sprayer development. System delay times due to the laser-sensor data buffer, software operation, and hydraulic-mechanical component response were determined for a control system used for a LiDAR-guided air-assisted variable-rate sprayer. The delay times were used to determine how far the laser sensor should be mounted ahead of spray nozzles to ensure sufficient time for the sprayer to discharge desired amounts of sprays to the target in real time. A photoelectric detection unit was designed to measure the lag times between when the target was detected by the laser sensor and when the liquid was discharged from the nozzle at various sprayer travel speeds. An algorithm was also developed to compensate the system delay times for the spray outputs to match the detected targets at different travel speeds in real time.

Last Modified: 8/30/2014
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