Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers

[Objective]Spraying calcium can effectively prevent the occurrence of dry burning heart disease in Chinese cabbage. Accurately targeting spraying calcium can more effectively improve the utilization rate of calcium. Since the sprayer needs to move rapidly in the field, this can lead to over-applicat...

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Main Authors: ZHANG Hui, HU Jun, SHI Hang, LIU Changxi, WU Miao
Format: Article
Language:English
Published: Editorial Office of Smart Agriculture 2024-11-01
Series:智慧农业
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Online Access:https://www.smartag.net.cn/CN/rich_html/10.12133/j.smartag.SA202406013
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author ZHANG Hui
HU Jun
SHI Hang
LIU Changxi
WU Miao
author_facet ZHANG Hui
HU Jun
SHI Hang
LIU Changxi
WU Miao
author_sort ZHANG Hui
collection DOAJ
description [Objective]Spraying calcium can effectively prevent the occurrence of dry burning heart disease in Chinese cabbage. Accurately targeting spraying calcium can more effectively improve the utilization rate of calcium. Since the sprayer needs to move rapidly in the field, this can lead to over-application or under-application of the pesticide. This study aims to develop a targeted spray control system based on deep learning technology, explore the relationship between the advance speed, spray volume, and coverage of the sprayer, thereby addressing the uneven application issues caused by different nebulizer speeds by studying the real scenario of calcium administration to Chinese cabbage hearts.[Methods]The targeted spraying control system incorporates advanced sensors and computing equipment that were capable of obtaining real-time data regarding the location of crops and the surrounding environmental conditions. This data allowed for dynamic adjustments to be made to the spraying system, ensuring that pesticides were delivered with high precision. To further enhance the system's real-time performance and accuracy, the YOLOv8 object detection model was improved. A Ghost-Backbone lightweight network structure was introduced, integrating remote sensing technologies along with the sprayer's forward speed and the frequency of spray responses. This innovative combination resulted in the creation of a YOLOv8-Ghost-Backbone lightweight model specifically tailored for agricultural applications. The model operated on the Jetson Xavier NX controller, which was a high-performance, low-power computing platform designed for edge computing. The system was allowed to process complex tasks in real time directly in the field. The targeted spraying system was composed of two essential components: A pressure regulation unit and a targeted control unit. The pressure regulation unit was responsible for adjusting the pressure within the spraying system to ensure that the output remains stable under various operational conditions. Meanwhile, the targeted control unit played a crucial role in precisely controlling the direction, volume, and coverage of the spray to ensure that the pesticide was applied effectively to the intended areas of the plants. To rigorously evaluate the performance of the system, a series of intermittent spray tests were conducted. During these tests, the forward speed of the sprayer was gradually increased, allowing to assess how well the system responded to changes in speed. Throughout the testing phase, the response frequency of the electromagnetic valve was measured to calculate the corresponding spray volume for each nozzle.[Results and Conclusions]The experimental results indicated that the overall performance of the targeted spraying system was outstanding, particularly under conditions of high-speed operation. By meticulously recording the response times of the three primary components of the system, the valuable data were gathered. The average time required for image processing was determined to be 29.50 ms, while the transmission of decision signals took an average of 6.40 ms. The actual spraying process itself required 88.83 ms to complete. A thorough analysis of these times revealed that the total response time of the spraying system lagged by approximately 124.73 ms when compared to the electrical signal inputs. Despite the inherent delays, the system was able to maintain a high level of spraying accuracy by compensating for the response lag of the electromagnetic valve. Specifically, when tested at a speed of 7.2 km/h, the difference between the actual spray volume delivered and the required spray volume, after accounting for compensation, was found to be a mere 0.01 L/min. This minimal difference indicates that the system met the standard operational requirements for effective pesticide application, thereby demonstrating its precision and reliability in practical settings.[Conclusions]In conclusion, this study developed and validated a deep learning-based targeted spraying control system that exhibited excellent performance regarding both spraying accuracy and response speed. The system serves as a significant technical reference for future endeavors in agricultural automation. Moreover, the research provides insights into how to maintain consistent spraying effectiveness and optimize pesticide utilization efficiency by dynamically adjusting the spraying system as the operating speed varies. The findings of this research will offer valuable experiences and guidance for the implementation of agricultural robots in the precise application of pesticides, with a particular emphasis on parameter selection and system optimization.
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spelling doaj-art-4efa6dc6b98c4ed9ad4c98fbfc4fce842025-01-16T15:52:14ZengEditorial Office of Smart Agriculture智慧农业2096-80942024-11-0166859510.12133/j.smartag.SA202406013SA202406013Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant CentersZHANG Hui0HU Jun1SHI Hang2LIU Changxi3WU Miao4College of Engineering, Heilongjiang Bayi Agricultural University, Daqing163319, ChinaCollege of Engineering, Heilongjiang Bayi Agricultural University, Daqing163319, ChinaCollege of Engineering, Heilongjiang Bayi Agricultural University, Daqing163319, ChinaCollege of Engineering, Heilongjiang Bayi Agricultural University, Daqing163319, ChinaCollege of Engineering, Heilongjiang Bayi Agricultural University, Daqing163319, China[Objective]Spraying calcium can effectively prevent the occurrence of dry burning heart disease in Chinese cabbage. Accurately targeting spraying calcium can more effectively improve the utilization rate of calcium. Since the sprayer needs to move rapidly in the field, this can lead to over-application or under-application of the pesticide. This study aims to develop a targeted spray control system based on deep learning technology, explore the relationship between the advance speed, spray volume, and coverage of the sprayer, thereby addressing the uneven application issues caused by different nebulizer speeds by studying the real scenario of calcium administration to Chinese cabbage hearts.[Methods]The targeted spraying control system incorporates advanced sensors and computing equipment that were capable of obtaining real-time data regarding the location of crops and the surrounding environmental conditions. This data allowed for dynamic adjustments to be made to the spraying system, ensuring that pesticides were delivered with high precision. To further enhance the system's real-time performance and accuracy, the YOLOv8 object detection model was improved. A Ghost-Backbone lightweight network structure was introduced, integrating remote sensing technologies along with the sprayer's forward speed and the frequency of spray responses. This innovative combination resulted in the creation of a YOLOv8-Ghost-Backbone lightweight model specifically tailored for agricultural applications. The model operated on the Jetson Xavier NX controller, which was a high-performance, low-power computing platform designed for edge computing. The system was allowed to process complex tasks in real time directly in the field. The targeted spraying system was composed of two essential components: A pressure regulation unit and a targeted control unit. The pressure regulation unit was responsible for adjusting the pressure within the spraying system to ensure that the output remains stable under various operational conditions. Meanwhile, the targeted control unit played a crucial role in precisely controlling the direction, volume, and coverage of the spray to ensure that the pesticide was applied effectively to the intended areas of the plants. To rigorously evaluate the performance of the system, a series of intermittent spray tests were conducted. During these tests, the forward speed of the sprayer was gradually increased, allowing to assess how well the system responded to changes in speed. Throughout the testing phase, the response frequency of the electromagnetic valve was measured to calculate the corresponding spray volume for each nozzle.[Results and Conclusions]The experimental results indicated that the overall performance of the targeted spraying system was outstanding, particularly under conditions of high-speed operation. By meticulously recording the response times of the three primary components of the system, the valuable data were gathered. The average time required for image processing was determined to be 29.50 ms, while the transmission of decision signals took an average of 6.40 ms. The actual spraying process itself required 88.83 ms to complete. A thorough analysis of these times revealed that the total response time of the spraying system lagged by approximately 124.73 ms when compared to the electrical signal inputs. Despite the inherent delays, the system was able to maintain a high level of spraying accuracy by compensating for the response lag of the electromagnetic valve. Specifically, when tested at a speed of 7.2 km/h, the difference between the actual spray volume delivered and the required spray volume, after accounting for compensation, was found to be a mere 0.01 L/min. This minimal difference indicates that the system met the standard operational requirements for effective pesticide application, thereby demonstrating its precision and reliability in practical settings.[Conclusions]In conclusion, this study developed and validated a deep learning-based targeted spraying control system that exhibited excellent performance regarding both spraying accuracy and response speed. The system serves as a significant technical reference for future endeavors in agricultural automation. Moreover, the research provides insights into how to maintain consistent spraying effectiveness and optimize pesticide utilization efficiency by dynamically adjusting the spraying system as the operating speed varies. The findings of this research will offer valuable experiences and guidance for the implementation of agricultural robots in the precise application of pesticides, with a particular emphasis on parameter selection and system optimization.https://www.smartag.net.cn/CN/rich_html/10.12133/j.smartag.SA202406013drug application to targetdeep learningsystem frequencyresponse timenozzle spray volume
spellingShingle ZHANG Hui
HU Jun
SHI Hang
LIU Changxi
WU Miao
Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
智慧农业
drug application to target
deep learning
system frequency
response time
nozzle spray volume
title Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
title_full Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
title_fullStr Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
title_full_unstemmed Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
title_short Precision Target Spraying System Integrated with Remote Deep Learning Recognition Model for Cabbage Plant Centers
title_sort precision target spraying system integrated with remote deep learning recognition model for cabbage plant centers
topic drug application to target
deep learning
system frequency
response time
nozzle spray volume
url https://www.smartag.net.cn/CN/rich_html/10.12133/j.smartag.SA202406013
work_keys_str_mv AT zhanghui precisiontargetsprayingsystemintegratedwithremotedeeplearningrecognitionmodelforcabbageplantcenters
AT hujun precisiontargetsprayingsystemintegratedwithremotedeeplearningrecognitionmodelforcabbageplantcenters
AT shihang precisiontargetsprayingsystemintegratedwithremotedeeplearningrecognitionmodelforcabbageplantcenters
AT liuchangxi precisiontargetsprayingsystemintegratedwithremotedeeplearningrecognitionmodelforcabbageplantcenters
AT wumiao precisiontargetsprayingsystemintegratedwithremotedeeplearningrecognitionmodelforcabbageplantcenters