Research progress on the monitoring methods of the separating loss in grain combine harvester*

doi:10.12398/j.issn.2096-7217.2020.01.003

Abstract

Abstract: The grain loss during the operation of combine harvester is directly related to the economic benefits of farmers. Mastering the accurate real-time grain loss information not only provide intuitive basis for the manipulator to adjust the working parameters of combine harvester that ensures the operation quality and improves the operation efficiency but also facilitate farmers or relevant government departments to track, supervise and measure the harvest loss of each region. The grain loss mainly includes the header loss, the unthreshed grain, the separating loss, the cleaning loss and leakage loss. The cleaning loss and separating loss account for a large proportion of grain loss. Therefore, it is necessary to monitor them in real time. Chinese researches on the monitoring methods of the separating loss are still at the theoretical and experimental stage, which is different from the researches oversea. Methods to improve the accuracy, reliability and adaptability of the separating loss sensors are difficult and essential in the information developing process of the grain combine harvester in our country. This paper summarizes the research progress of the monitoring methods and devices of grain combine harvester's separating loss at home and abroad from the aspects of the monitoring principles of the separating loss, the sensor signal processing system, the sensor damping method, the probability distribution model of separating loss. In addition, the developing trend will be analyzed. This will contribute to the continuous improving and upgrading of separation loss sensor and lay a solid foundation for the completion of information harvest in China .

Key words: combine harvester, separating loss monitoring, research progress

Yang Li, Zhen Xue, Lizhang Xu, Yaoming Li, Jie Qiu, Yingfeng Wang. Research progress on the monitoring methods of the separating loss in grain combine harvester^*[J]. Journal of Intelligent Agricultural Mechanization (in Chinese and English), 2020, 1(1): 13-23.

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Research progress on the monitoring methods of the separating loss in grain combine harvester^*

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