中国农业大学学报2024，Vol.29Issue(9)：158-166,9.DOI:10.11841/j.issn.1007-4333.2024.09.14
基于卷压力的圆捆机成捆密度监测系统设计与试验
Design and experiment of density monitoring system for round baler based on rolling pressure
摘要
Abstract
In response to the current problems of the low degree of informatization of domestic round baler and lack of effective monitoring means for bale density,a set of bale density monitoring system for round baler was designed in this study.The real-time monitoring of bale density is realized by measuring the roll pressure during the bale forming process and establishing a function model between roll pressure and bale density.The monitoring system is mainly composed of controller,signal acquisition module,communication module,display module and power supply module,etc.It realizes the monitoring of several operational parameters of the round baler through the roll pressure acquisition device and side tension acquisition device.In this study,a test bed is set up to carry out the bale performance test of the bale density monitoring system.Bundle density is monitored by using roll pressure and side tension as bale formation indexes to compare the differences respectively.This study conducted tests on the compression law of wheat straw,established a function model between roll pressure and density in the bale forming process,and verified the function model based on several bale tests.The results show that:1)The bale density monitoring system of round baler based on roll pressure can realize the collection and monitoring of operational parameters during the bale forming process of round baler.2)The maximum deviation of bale density is 4.38％and the coefficient of variation is 3.12％when using roll pressure as the index of bale formation.The density monitoring method based on roll pressure can more accurately reflect the size of bale density compared with the side pulling force.3)The relationship between roll pressure and density of wheat straw with 15％moisture content in the baling process is in accordance with the quadratic function model,the correlation coefficient is 0.983,and the maximum deviation between the calculated value and the measured value is 5.06％,which makes the compression model able to accurately reflect the relationship between roll pressure and density.In conclusion,the monitoring system constructed in this study can realize the real-time monitoring of the bale density.This study provides a reference for the bale density control of round baler.关键词
圆捆机/卷压力/成捆密度/监测系统Key words
round baler/roll pressure/bale density/monitoring system分类
农业科技引用本文复制引用
尤泳,马朋勃,陈科,惠云婷,李思标,王德成,高晓宏,苏佳佳..基于卷压力的圆捆机成捆密度监测系统设计与试验[J].中国农业大学学报,2024,29(9):158-166,9.基金项目
内蒙古自治区科技成果转化专项资金项目(2021CG0011) （2021CG0011）
山东省重大科技创新工程项目(2022CXGC020704) （2022CXGC020704）
国家牧草产业技术体系(CARS-34) （CARS-34）
