农机化研究2025，Vol.47Issue(7)：80-88,9.DOI:10.13427/j.issn.1003-188X.2025.07.011
基于COMSOL的小麦含水率在线检测装置设计与试验
Design and Experiment of Online Testing Device for Wheat Moisture Content of Combine Harvester Based on COMSOL
摘要
Abstract
Moisture content is a key indicator to judge wheat maturity and harvest suitability.Timely and accurate acqui-sition of wheat moisture content is conducive to wheat harvest and production planning,guiding the operation scheduling of combined harvester,and ensuring accurate harvest of wheat in the mature stage.In order to improve the accuracy of online detection system of wheat moisture content in combined harvester,a kind of online detection sensor of wheat grain moisture content with the ipsilateral circular arc capacitance was designed,and its structure and working principle were analyzed by finite element simulation and the structure parameter optimization test of capacitor plate were carried out.Based on COMSOL Multiphysics software,the structural parameters of the ipsilateral circular arc capacitive moisture con-tent detection sensor were optimized,including the number of plates,plate size and plate spacing,and the final opti-mized parameters were obtained:When the width of the driving plate of the ipsilateral circular arc capacitor tripole plate type wheat grain moisture content detection sensor was 45 mm,the width of the sensing plate was 23 mm,the edge of the plate was 18 mm,and the length of the plate was 135 mm,the linear correlation between the capacitance and the permit-tivity was satisfied,and the determination coefficient R2 was close to 1.关键词
含水率/COMSOL/同侧圆弧式电容传感器/在线检测/小麦Key words
moisture content/COMSOL/ipsilateral circular arc capacitance sensor/online detection/wheat分类
农业科技引用本文复制引用
姬虹,李康,宋东方,王万章,李保谦,冯伟..基于COMSOL的小麦含水率在线检测装置设计与试验[J].农机化研究,2025,47(7):80-88,9.基金项目
中央引导地方科技发展资金项目(Z20221341068) （Z20221341068）
郑州市科技惠民计划项目(2022KJHM0045) （2022KJHM0045）
河南省科技厅科技攻关项目(242102110359 （）
河南省科技厅重点软科学项目(242400411017) （242400411017）
