Study on Yield Monitoring System for Head-Feeding Combines (Part2) - Analysis of the Gap between Harvesting Position and Yield Monitoring Position

摘要

This study revealed a gap between harvesting position and yield-monitoring position for the tailings return when converting the yield detected in the grain tank into the yield at the harvesting position in a yield-monitoring system for head-feeding combines. In a field experiment, purple grained rice grown as a marker was detected in the grain tank at positions 0-60 m behind the harvesting position, and the position changed with the work speed and sorting. Moreover, the result was reproducible in a platform experiment. The yield measured in the grain tank could be converted into the yield at the harvesting position by correcting the measured yield using a constant determined by the relative position based on the experimental results.