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Title:   Author  item
                                            SHEN, YUE - The Ohio State Universityitem
                                            Zhu, Hepingitem
                                            LIU, HUI - The Ohio State Universityitem
                                            CHEN, YU - The Ohio State Universityitem
                                            OZKAN, ERDAL - The Ohio State University
  Submitted to: Symposium Proceedings
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 8/10/2013
                                    Publication  Date: 8/20/2013
                                    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.Interpretive Summary:
                                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.


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