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Improvement and Experiment of Cleaning Loss Rate Monitoring Device for Corn Combine Harvester
Authors
王卓
白晓平
胡河春
车东
Publication date
1 January 2018
Publisher
Abstract
针对玉米籽粒收获时,损失率检测不准的问题,以压电薄膜作为敏感材料,设计了一种由冲击传感器、信号处理电路和安装装置等组成的玉米收获机籽粒清选损失监测装置,并采用支持向量机多分类算法提取玉米籽粒冲击信号,实现了玉米籽粒损失的实时监测。首先,在不同冲击角度和高度的实验条件下,对不同大小的玉米籽粒和杂余进行冲击信号的采集实验,提取冲击信号的主要特征。采用支持向量机多分类算法对模型进行训练,并在监测装置上实现实时分类。使用不同品种和含水率玉米对分类模型进行验证。然后,在不同风机转速和清选筛开度的条件下,得到测试时间内传感器检测的籽粒个数与总损失量之间的关系,并根据谷物流量值,计算得到实时的清选损失率。最后,将该监测装置安装在4YL-8型玉米联合收获机上,并进行田间试验。结果表明,该监测装置与人工检测相比,平均相对误差为12.98%,可以为收获机的控制提供反馈信息。</p
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Institutional Repository of Institute of Automation, CAS
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Last time updated on 16/09/2020
Shenyang Institute of Automation,Chinese Academy Of Sciences
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Go to the repository landing page
Download from data provider
oai:ir.sia.cn/:173321/23408
Last time updated on 03/02/2019