数字农科院2.0

Design and Test of Real-Time Detection System for Cleaning Loss of Rapeseed Harvester

文献类型： 外文期刊

作者： Yao Yang;Min Zhang;Tao Jiang;Gang Wang;Lan Jiang

作者机构：

关键词： cleaning loss;detection;energy distinction method;hardware integration;rapeseed harvester

期刊名称： Applied Sciences (Switzerland)

ISSN： 2076-3417

年卷期： 2025 年 15 卷 2 期

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Aiming to address the problem of low recognition accuracy in the current cleaning loss detection system of rapeseed harvesters, a rapeseed cleaning loss detection system was developed using the energy distinction method based on the principle of impact piezoelectricity. A signal processing circuit, centered around a hardware integral circuit and a triple voltage comparison circuit, was designed. The energy of the impact signals generated by rapeseed kernels and impurities was calculated through hardware integration. The distinction threshold for the energy of the impact signals generated by kernels and impurities under the operating wind speed of the cleaning system was found through experiments, and a fitting model relating the fan speed to the distinction threshold was constructed. A loss detection and counting system for rapeseed kernels was designed to realize the statistics and real-time display of rapeseed kernels regarding cleaning loss. Performance verification tests were conducted on mixtures of rapeseed kernels and impurities with different mixing ratios, and a field test was carried out on the platform of a 4LZY-5.0Z rapeseed combine harvester. The test results showed that the accuracy of the designed loss detection system for kernel identification was more than 91.6%. Under operating conditions of 700, 900 and 1200 r/min fan speeds in the combine harvester cleaning system, the relative errors of the loss detection system compared to manual detection were 5%, 4.7% and 3.8%, respectively. The developed loss detection system for rapeseed kernels has high detection accuracy and good overall performance, which means it can provide feedback information for the control of the harvester.

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