| 34 | 0 | 4 |
| 下载次数 | 被引频次 | 阅读次数 |
包装大米水分快速无损检测是确保其在储运环节质量安全的有效手段。首先，为了探究包装大米水分的非破坏性检测方法，开展基于电容层析成像(ECT)技术的研究，通过数值模拟分析，构建一套适用于包装粮实际尺寸的三维立体式ECT传感器仿真模型(40 cm×12 cm×60 cm),并完成其正问题求解。其次，进一步对阵列电极传感器的性能参数进行优化研究，综合分析传感器极板的宽度、高度、极板上下间距、屏蔽层厚度等结构参数对测量空间的灵敏度分布均匀性、电容的动态测量范围及重构图像相对误差三项评价指标的影响规律。通过设计正交试验，对比分析各个结构参数对三项指标的评价结果，最终确定了一组性能最优的ECT传感器结构参数，即极板高为7 cm、极板宽为5 cm、极板上下间距为6.5 cm、屏蔽层厚度为6.5 cm。最后，采用Landweber算法进行图像重构并完成效果验证，结果表明重构图像能够基本映射出高介电常数区域(高含水率大米)分布位置，但交界处图像质量还有待提升。研究结果有望为包装成品粮水分ECT检测系统的研发提供理论依据。
Abstract：Rapid nondestructive detection of moisture in packaged rice is an effective means to ensure its quality and safety in storage and transportation.Firstly, in order to explore the non-destructive moisture detection method of packaged rice, research based on capacitance tomography(ECT) technology is carried out, and a set of three-dimensional stereo ECT imaging sensor simulation model(40 cm×12 cm×60 cm) applicable to the actual size of packaged grains is constructed through numerical simulation analysis and its forward problem solving is completed.Secondly, the performance parameters of the array electrode sensor are further optimized to comprehensively analyze the influence laws of the structural parameters such as the width and height of the sensor's pole plate, the spacing between the top and bottom of the pole plate, and the thickness of the shielding layer on the three evaluation indexes, namely, the uniformity of the sensitivity distribution in the measurement space, the dynamic measurement range of the capacitance, and the relative error of the reconstructed image.By designing orthogonal tests and comparing and analyzing the evaluation results of each structural parameter on the three indexes, a set of structural parameters of the ECT sensor with optimal performance is finally determined, i.e.,the height of the pole plate is 7 cm, the width of the pole plate 5 cm, the spacing between the top and bottom of the pole plate 6.5 cm, and the thickness of the shielding layer 6.5 cm.Finally, the image reconstruction is carried out using the Landweber algorithm to show that the reconstructed image can be basically reconstructed and the effect of reconstruction is verified.The results show that the reconstructed image can basically map out the distribution location of the high dielectric constant region(rice with high moisture content),but the image quality of the junction needs to be improved.The results of this study are expected to provide a theoretical basis for the development of moisture ECT imaging detection system for packaged grain.
[1]吴志华，苑浩妍．中国粮食物流2021年回顾与2022年展望[J]．粮食科技与经济，2022,47(2):11-16.WU Z H,YUAN H Y.China’s grain logistics in 2021 review and in 2022 prospect[J].Food Science and Technology and Economy,2022,47(2):11-16.(in Chinese)
[2]徐永安．粮食仓储物流技术难题和需求调研分析[J]．粮油食品科技，2024,32(2):194-202.XU Y A.Research and analysis on technical difficulties and requirements of grain storage and logistics[J].Science and Technology of Cereals,Oils and Foods,2024,32 (2):194-202.(in Chinese)
[3]徐永安．粮食仓储物流技术领域发展中存在的问题与技术途径(一)[J]．粮油食品科技，2019,27(1):5-13.XU Y A.Problems and technology approaches on the development of grain storage and logistics[J].Science and Technology of Cereals,Oils and Foods,2019,27 (1):5-13.(in Chinese)
[4]冯春，周浩，向长琼，等．“北粮南运”散粮集装箱质量安全运输优化研究[J]．粮食储藏，2021,50(2):10-16.FENG C,ZHOU H,XIANG C Q,et al.Research on multi-objective intermodal transportation of grain from northern China to the south considering quality changes[J].Grain Storage,2021,50(2):10-16.(in Chinese)
[5]ZHANG W B,WANG C,YANG W Q,et al.Application of electrical capacitance tomography in particulate process measurement-A review[J].Advanced Pow der Technology,2014,25(1):174-188．
[6]PAN J M,YANG Z F,YAP S H K,et al.Non-destructive online seal integrity inspection utilizing autoencoder-based electrical capacitance tomography for product packaging assurance[J].Food Packaging and Shelf Life,2022,33:100919．
[7]WAJMAN R.The concept of 3D ECT system with increased border area sensitivity for crystallization processes diagnosis[J].Sensor Review,2021,41(1):35-45．
[8]KARIM N B A,BIN ISMAIL I.Soil moisture detection using electrical capacitance tomography (ECT) sensor[C]//2011IEEE International Conference on Imaging Systems and Techniques.Batu Ferringhi,M alaysia:IEEE,2011:83-88．
[9]■,CHANIECKI Z,BABOUT L.Study of granular flow in silo based on electrical capacitance tomography and optical imaging[J].Flow M easurement and Instrumentation,2018,62:186-195．
[10]ASEFI M,GILMORE C,JEFFREY I,et al.Detection and continuous monitoring of localised high-moisture regions in a full-scale grain storage Bin using electromagnetic imaging[J].Biosystems Engineering,2017,163:37-49．
[11]廉飞宇，李青，秦瑶．储粮水分含量异常区域的雷达层析成像检测[J]．计算机工程，2012,38(18):198-202.LIAN F Y,LI Q,QIN Y.Radar tomography detection for abnormal regions of grain storage moisture content[J].Computer Engineering,2012,38(18):198-202.(in Chinese)
[12]王艺锦，张元，孙希林．基于电磁波层析成像的粮仓储粮水分检测方法的研究[J]．河南工业大学学报(自然科学版)，2013,34(3):14-18,74.WANG Y J,ZHANG Y,SUN X L.Study on stored grain moisture detection in granary based on electromagnetic tomography[J].Journal of Henan University of Technology(Natural Science Edition),2013,34(3):14-18,74.(in Chinese)
[13]VOSS A,HOSSEINI P,POUR-GHAZ M,et al.Three-dimensional electrical capacitance tomography-A tool for characterizing moisture transport properties of cement-based materials[J].Materials&Design,2019,181:107967．
[14]张立峰，朱炎峰．电容层析成像系统阵列电极三维优化设计[J]．计量学报，2020,41(8):947-952.ZHANG L F,ZHU Y F.Three-dimensional optimal design of array electrode for electrical capacitance tomography System[J].Acta Metrologica Sinica,2020,41 (8):947-952.(in Chinese)
[15]YU L,ZHANG M M,YANG D,et al.Grain moisture sensing using electrical capacitance tomography[J].IEEE Sensors Journal,2024,24(2):2038-2048．
[16]刘再兴，王海刚．同心圆环区域电容层析成像传感器数目优化[J]．仪器仪表学报，2021,42(10):94-104.LIU Z X,WANG H G.Optimization of the number of electrical capacitance tomography sensors w ith concentric annulus structure[J].Chinese Journal of Scientific Instrument,2021,42(10):94-104.(in Chinese)
[17]HOR X F,ALI M S M,GOOI W P.Electrode configuration study for three-dimensional imaging of on-chip ECT[J].Engineering Research Express,2023,5(2):025003．
[18]姚佳烽，车权齐，李志伟，等．电容层析成像技术研究进展[J]．机械制造与自动化，2022,51(5):1-7,25.YAO J F,CHE Q Q,LI Z W,et al.Research progress of electrical capacitance tomography[J].M achine Building&Automation,2022,51(5):1-7,25.(in Chinese)
[19]张立峰，戴力．基于鲁棒正则化极限学习机的电容层析成像图像重建[J]．计量学报，2022,43(8):1044-1049.ZHANG L F,DAI L.Image reconstruction based on robust regularized extreme learning machine for electrical capacitance tomography[J].Acta Metrologica Sinica,2022,43 (8):1044-1049.(in Chinese)
[20]张晋荣，王莉莉，杨博韬，等．电容层析成像系统传感器场域剖分及参数优化[J]．哈尔滨理工大学学报，2021,26(2):59-67.ZHANG J R,WANG L L,YANG B T,et al.Sensor field segmentation and parameter optimization for electrical capacitance tomography system[J].Journal of Harbin University of Science and Technology,2021,26 (2):59-67.(in Chinese)
[21]李照威，孙启国．油气润滑ECT系统灵敏度矩阵的秩亏问题及其影响因素[J]．内蒙古科技与经济，2021(8):97-99.LI Z W,SUN Q G.Rank deficiency of sensitivity matrix of oil-gas lubrication ECT system and its influencing factors[J].Inner M ongolia Science Technology&Economy,2021 (8):97-99.(in Chinese)
[22]HUANG G X,LI C,WANG J W,et al.ECT image reconstruction based on sensitive field expansion and optimization[J].Measurement Science and Technology,2024,35 (6):065402．
[23]RASEL R K,ZUCCARELLI C E,MARASHDEH Q M,et al.Tow ard multiphase flow decomposition based on electrical capacitance tomography sensors[J].IEEE Sensors Journal,2017,17(24):8027-8036.
基本信息:
DOI：
中图分类号:TS210.7;TP212
引用信息:
[1]蒋莹莹,邓梦瑶,杜卓昕等.基于电容层析成像的包装大米水分检测传感器研究[J].沈阳理工大学学报,2025,44(05):44-51+58.
基金信息:
中央级公益性科研院所基本科研业务费专项资金项目(JY2302)