卷烟燃烧锥形态参数测定及与燃烧速度间的关系

为深入了解卷烟的燃烧性能，建立了一种基于图像处理技术的卷烟燃烧锥长度、面积、偏离角等形态参数的测定方法，通过48种卷烟样品自由燃烧速度及燃烧锥形态参数的测定，研究了卷烟燃烧锥形态参数与自由燃烧速度间的关系。研究结果表明:（1）48种卷烟燃烧锥锥长、锥面积、偏离角的RSD分别介于2.7%~10.1%、1.1%~10.1%、12.0%~78.3%之间，其中燃烧锥长度及面积的重复性较好，依据测量结果区分样品间差异性的灵敏度较高。（2）48种卷烟的燃烧锥锥长、锥面积和偏离角分别介于6.604~14.017mm、38.729~92.825mm2、2.778~7.636°之间，不同牌号卷烟的三项燃烧锥形态参数均存在极显著差异性。（3）卷烟自由燃烧速度与燃烧锥锥长和面积间均存在极显著正相关关系，且两者之间存在交互作用。 

Shape parameters of cigarette burning cone and their relationships with burning rate

To understand combustion performance of cigarette, a method for determining shape parameters such as length, area and deviation angle of burning cones was established based on image processing technology.Through the determination of free burning rate and shape parameters of burning cone of 48 kinds of cigarette samples, the relationship between shape parameter of burning cone of cigarette and free burning rate was studied.Results showed that: (1) The RSD of cone length, cone area and deviation angle of 48 cigarettes ranged from 2.7% to 10.1%, 1.1% to 10.1%, and 12.0% to 78.3%, and the reproducibility of cone length and cone area was better.The sensitivity in distinguishing difference between samples was higher according to the measurement results.(2) Cone length, cone area and deviation angle of the 48 cigarettes were between 6.604~14.017mm, 38.729~92.825mm2 and 2.778~7.636, respectively.There were extremely significant differences in three cone shape parameters among different brands of cigarettes.(3)There was a significant positive correlation between free burning rate of cigarettes and cone length and area of burning.