农业机械学报2026，Vol.57Issue(4)：97-107,11.DOI:10.6041/j.issn.1000-1298.2026.04.010
基于电阻法的皮棉回潮率在线检测装置设计与试验
Design and Experiment of Online Lint Cotton Moisture Regain Detection Device Based on Resistance Method
摘要
Abstract
In response to the challenges of quantitative sampling under negative pressure,low real-time detection accuracy of moisture content,and poor stability during the cotton processing,an online moisture content detection device for lint cotton was developed based on the resistance method.A novel online detection method,combining"dynamic quantitative sampling—weight constant pressure measuremen—multi-parameter compensation"was proposed.Key components,including a flip-type sampling mechanism and weight detection system,were designed to achieve stable sampling and continuous detection of lint cotton in a high-speed flow state.Based on the electrical resistance characteristics of lint cotton and environmental temperature and humidity data,a multi-parameter moisture content prediction model was constructed.After comparing various algorithms,the random forest model was identified as the most accurate predictor,with a coefficient of determination(R2)of 0.98 and a root mean square error(RMSE)of 0.22%.Performance validation tests showed that the average deviation between the proposed online detection device and the standard measurement instrument was 0.1%,with an average detection time of 23.4 s per sample.The impact of sample weight on the moisture content measurement results was weak(Pearson correlation coefficient was 0.47).The experimental results demonstrated that the device offered high detection accuracy and good stability,meeting the real-time and accuracy requirements for moisture content detection in cotton processing.This device can provide reliable technical support for intelligent regulation and quality traceability in the cotton processing industry.关键词
皮棉/定量取样/回潮率/电阻法/在线检测Key words
lint cotton/quantitative sampling/moisture regain/resistance method/online detection分类
农业科技引用本文复制引用
徐健康,王培宇,张若宇,钱一夫,方亮,常金强,刘遵严..基于电阻法的皮棉回潮率在线检测装置设计与试验[J].农业机械学报,2026,57(4):97-107,11.基金项目
国家重点研发计划项目(2022YFD2002400)、兵团科技攻关计划项目(2023AB014)、新疆棉花产业技术体系专项(XJARS-03)和国家棉花产业技术体系专项(CARS-15-17) （2022YFD2002400）
