DESIGN AND TESTING OF SEEDING QUALITY MONITORING SYSTEM FOR COTTON HILL-DROP PLANTER

To address the limitations of seeding quality monitoring methods under the seeding operation mode of cotton hill-drop planter without grain, this paper designed a seeding quality monitoring system that can eschew the traditional reliance on seed conductor. The system realizes real-time monitoring based on the differences in the cotton seeds’ absorption of light of different wavelengths, and achieves accurate evaluation of seeding quality by obtaining the seeding quality parameters with multiple types of sensors. Bench tests showed the lowest accuracy of seeding rate monitoring was 97% and the highest accuracy of missed seeding monitoring was 95% while the field tests showed that the highest drop in the accuracy of seeding rate monitoring was 2.03 percentage, but the lowest accuracy of missed seeding monitoring is still above 91%. The system does not require the transformation of the equipment carrier, but has a high degree of equipment adaptability, which can meet the requirements on monitoring of cotton seeding. The monitoring method is effective and feasible, with high accuracy and stability.