Study on seeding delay time and lag distance of automatic section control system for maize seeder
文献类型： 外文期刊
作者： Ling, Lin 1 ; Li, Hanqing 1 ; Xiao, Yuejin 1 ; Fu, Weiqiang 1 ; Dong, Jianjun 1 ; Li, Liwei 1 ; Liu, Rui 1 ; Huang, Xinguang 1 ; Wu, Guangwei 1 ; Meng, Zhijun 1 ; Yan, Bingxin 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Intelligent Equipment Res Ctr, Beijing 100097, Peoples R China
2.Southwest Univ, Coll Engn & Technol, Chongqing 400716, Peoples R China
3.State Key Lab Intelligent Agr Power Equipment, Beijing 100097, Peoples R China
关键词： Automatic section control; Seeding delay time; Seeding lag distance; Influencing factor; Variation pattern
期刊名称：COMPUTERS AND ELECTRONICS IN AGRICULTURE （ 影响因子：8.9； 五年影响因子：9.3 ）
ISSN： 0168-1699
年卷期： 2025 年 232 卷
页码：
收录情况： SCI
摘要： Automatic section control (ASC) can effectively reduce the double-seeded area by controlling start and stop seeding automatically, thereby saving seeds and increasing yields. Seeding delay time (SDT) and seeding lag distance (SLD) are core factors that affect the accuracy and reliability of ASC systems. To explore the influence factors and variation patterns of SDT and SLD, this study developed an ASC system for maize seeder. The system can determine the position of each seed metering device based on a GNSS antenna, and automatically control the status of the motor of the seed metering device based on relative position between the seed metering device and the field. Theoretical analysis revealed that the angle between the seed and the seed drop point caused the start seeding delay time and start seeding lag distance (STLD) to be greater than the stop seeding delay time and stop seeding lag distance (SPLD), and the difference between the two lag distances is one seed spacing. The constructed SDT and SLD models showed that both SDT and SLD were also related to GNSS frequency and operational speed. To verify the accuracy of the model, field experiments were carried out based on GNSS frequencies (1, 5, 10 Hz) and operational speeds (4, 5, 6, 7, 8 km/h) with a seed spacing of 0.2 m. The field experiments showed that STLD was 0.703-2.191 m, and SPLD was 0.559-2.626 m, with STLD generally greater than SPLD, a difference of nearly one seed spacing. SLD was negatively correlated with GNSS frequencies and positively correlated with operational speed. GNSS frequency and operational speed had significant influences (p < 0.001) on SLD. The correlation coefficients between SLD and the SLD model ranged from 0.54 to 0.90. Seed bouncing and seeder vibration caused a relative error of 4.51 % to 21.69 % in the SLD model. In conclusion, the SLD model can well describe the variation patterns and the significant influence of the actual SLD. The validation results of the SLD model indirectly supported the validity of the SDT model. The methods and results of this study can provide a reference for the development and optimization of ASC systems.
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