农业机械学报2018，Vol.49Issue(3)：36-42,7.DOI:10.6041/j.issn.1000-1298.2018.03.004
单粒谷物体积排液法精确测量研究
Accurate Measurement of Single Grain Volume Draining Method
摘要
Abstract
In order to solve the problems of complex operation,heavy workload and toxic when measuring the grain volume by the existing pycnometer method,the research on accurate measurement of single grain volume draining method was carried out.Combining the image processing technology and the volumetric principle of the liquid draining method,the device was mainly composed of a standard white light source,a linear CCD,a measuring container,a cereal dedicated holding device,a computer and the like.Firstly,the standard white light source was adjusted,the image acquisition environment was enhanced,volume calibration was performed,and the actual volume value V0 was calculated,which was about 0.002 3 mL represented by a single pixel.Secondly,the liquid level image of measuring vessel was aquired by high accuracy linear CCD camera.Finally,the difference method was used to extract the image of the liquid level change;the number of pixels contained in this part of the image was counted,combining with the volume calibration results to calculate the volume value.Volume draining method and pycnometer method were used for the same batch of cereals respectively.Two sets of volume data were then obtained.Volumetric discharge took 12 min,and pycnometer method took 124 min.The two groups of data were tested by using the Grubbs test,F test and t test for significant differences tests,and the calculated test values were (TA,TB),FAB,tAB.The values were compared with the critical value of their distribution table:(TA,TB) ＜ T0.05,100,FAB ＜ F0.025(99,9),tAB ＜ t0.05,198,and all of which met the inspection requirements.The results showed that there was no significant difference between the two sets of volume data.The accurate measuring device and method of volumetric discharge of single grain can quickly and precisely measure the volume of irregular single grain,and provide reliable grain volume for scientific research and actual production data.关键词
单粒谷物/体积/排液法/线阵CCD/精确测量Key words
single grain/volume draining method/linear CCD/accurate measurement分类
信息技术与安全科学引用本文复制引用
刘双喜,孙林林,付千悦,王震,张春庆,王金星..单粒谷物体积排液法精确测量研究[J].农业机械学报,2018,49(3):36-42,7.基金项目
国家公益性行业农业科研专项(201303005)、山东省高等学校科技计划项目(J15LF08)、“双一流”奖补资金项目(SYL2017XTTD14)、国家级大学生创新计划项目(201710434249)和山东省现代农业产业技术体系创新项目 （201303005）
