Multiple linear regression analysis on the reliability of aggregate water content detection by microwave transmission method
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摘要: 为满足工业化生产集料含水率的检测需求,基于微波透射和多元线性回归模型理论构建分析模型,对其显著性及检测结果可靠性进行了研究,建立了对比偏差及其均方根误差、标准差、变异系数评价指标以表征0~4. 75 mm,4. 75~16. 00 mm,16. 00~31. 50 mm不同粒径范围集料含水率离线与在线检测结果的重复性和检测精度。结果表明:多元线性回归分析模型拟合优度较高,离线与在线检测数据对比偏差范围为±0. 3%,均方根误差为0. 148%,0. 130%,0. 147%,检测结果高度契合,满足工程检测需求。Abstract: In order to meet the demand of detecting moisture content of aggregates in industrial production, an analysis model was constructed based on microwave transmission and multiple linear regression model theory, its significance and the reliability of its detection results were studied. The comparison deviation and its root mean square error, standard deviation and coefficient of variation evaluation indexes were established to represent the repeatability and accuracy of the off-line and on-line measurement results of the water content of aggregates with different particle size ranges of 0~4. 75 mm, 4. 75~16. 00 mm and 16. 00~31. 50 mm. The results showed that the multiple linear regression analysis model had a high goodness of fit, the deviation range of offline and online detection data was ±0. 3%, and the root mean square error was 0. 148%, 0. 13%, 0. 147%. The test results were highly consistent and meet the requirements of engineering detection.
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[1] 都广雄.水泥混凝土搅拌设备砂含水率在线检测技术研究[D].西安:长安大学,2015. [2] 孙耀强.电容式粮食水分在线检测仪的研究[D].长春:吉林农业大学,2014. [3] 王会,卢雅婷.近红外水分测定仪的发展及在食品水分检测中的应用[J].农业工程,2016,6(1):58-61. [4] OTTEN K A,BRISCHKE C,MEYER C.Material moisture content of wood and cement mortars-Electrical resistance-based measurements in the high ohmic range[J].Construction and Building Materials,2017,153:640-646.
[5] PETERS J,BARTSCHER K,DÖSCHER C,et al.In-line moisture monitoring in fluidized bed granulation using a novel multi-resonance microwave sensor[J].Talanta,2017,170:369-376.
[6] 汪蓓蓓,黄云志,刘永洪.平面电容传感器设计及在材料探伤中的应用研究[J].传感技术学报,2014,27(7):997-1001. [7] 郭志恒,阚哲,张实,等.电容法在线检测乳粉含水率的影响因素[J].中国粉体技术,2019,25(6):19-23. [8] 李秋忠,查旭东.路基含水量测定方法综述[J].中外公路,2005,25(2):41-43. [9] 苏圆圆,何怡刚,邓芳明,等.基于无源RFID的混凝土湿度监测技术研究[J].电子测量与仪器学报,2016,30(8):1235-1243. [10] CHEN W,SHEN P L,SHUI Z H.Determination of water content in fresh concrete mix based on relative dielectric constant measurement[J].Construction and Building Materials,2012,34:306-312.
[11] 黄明键,刘明军,梁立新,等.微机在微波纸张湿度在线测量中的应用[J].济南大学学报(自然科学版),2001,15(3):198-200,203.
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