CAJ | 학술논문

介绍了应用数字图像处理技术检测流化床气固稀相流动体积空隙率的方法.使用高速摄影系统,对流化床气固稀相流动过程进行实时拍摄和图像采集,利用图像处理技术对不同时刻的图像进行消噪、边缘提取、二值化、分割等处理,然后计算出图像中目标颗粒的周长、面积、体积等参数.统计得出每幅图像中颗粒粒径分布曲线.利用数学模型,计算出稀相流动不同时刻的体积空隙率.实验结果表明,该方法较符合实际情况、且具有较高的测量精度,可以用于气固稀相流动参数的在线检测.
개소료응용수자도상처리기술검측류화상기고희상류동체적공극솔적방법.사용고속섭영계통,대류화상기고희상류동과정진행실시박섭화도상채집,이용도상처리기술대불동시각적도상진행소조、변연제취、이치화、분할등처리,연후계산출도상중목표과립적주장、면적、체적등삼수.통계득출매폭도상중과립립경분포곡선.이용수학모형,계산출희상류동불동시각적체적공극솔.실험결과표명,해방법교부합실제정황、차구유교고적측량정도,가이용우기고희상류동삼수적재선검측.
A new method based on image processing was developed to measure volume voidage in gas-solid dilute phase flow of fluidized bed.High-speed camera system was employed to capture the real-time images of dilute phase flow.Image processing technology was adopted to noise remove,edge detection,binarization and segmentation in the images at different times.Thus,parameters of target particle image were calculated,such as perimeter,area and volume.Particle size distribution curves and volume voidage were obtained by statistics and calculation through mathematical model.Experimental results showed that the measurement accuracy of the method was high,and it could be used for on-line detection of parameters in dilute gas-solid flow.