WHEAT HARVESTING QUALITY ONLINE DETECTION SYSTEM AND EXPERIMENTAL VERIFICATION

Harvest quality is one of the key indicators for evaluating the performance of mechanized wheat harvesting. To enable real-time monitoring of harvest quality during the wheat combine harvesting process, this study integrates an online detection system specifically designed for wheat harvest quality. The system is capable of real-time monitoring of threshing and cleaning losses, breakage rate, and impurity rate. To assess the effectiveness of the online detection system, field experiments were conducted. The experimental results showed that the average threshing and cleaning loss rates of the harvester measured manually were 0.69% and 0.75%, respectively, while those detected by the online system were 0.52% and 0.50%, respectively. The average grain breakage rates obtained through manual measurement were 0.67% and 0.58%, whereas the system detected breakage rates of 0.49% and 0.52%, respectively. For impurity rate, manual measurements yielded average values of 0.81% and 0.69%, while the system recorded 0.73% and 0.67%, respectively. The results demonstrate that the developed online wheat harvest quality detection system can effectively perform real-time assessments of harvest quality during combine harvesting operations.