Field and laboratory experiments were done to investigate the performance of an impact-based yield sensor. Laboratory tests showed that the accuracy of the yield sensor was affected by sudden grain flow changes. The yield sensor had a quick response to flow variations; however, it did not provide consistent readings when grain flow variations were abrupt. In field tests, the yield monitor showed yield trends quite reasonably. The yield monitor accuracy was higher at a constant combine ground speed compared to varying speeds based on weights from individual strips. Yield monitor calibration plays a key role in obtaining the best possible accuracy from the yield monitor.
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