CAJ | 학술논문

为了提高介质阻挡放电（dielectric barrier discharge,DBD）的工业应用效率,深入理解DBD的形成机理,基于数字图像处理技术,提出了一种利用不同曝光时间放电图像的灰度直方图（gray level histogram,GLH）来识别DBD丝状或均匀放电模式的新方法。研究结果表明：由于丝状放电图像是由不同灰度级的像素点构成,所以随着曝光时间的逐渐增大,对应放电图像像素点的灰度级均逐渐增大,GLH逐渐向右偏移,半宽度明显变宽;而均匀放电图像基本上是由单一灰度级的像素点构成,所以随着曝光时间的逐渐增大,对应放电图像像素点的灰度级也逐渐增大,GLH也逐渐向右偏移,但半高宽基本保持不变。故利用不同曝光时间放电图像的GLH能够较为简单、有效地识别不同放电模式的DBD。
위료제고개질조당방전（dielectric barrier discharge,DBD）적공업응용효솔,심입리해DBD적형성궤리,기우수자도상처리기술,제출료일충이용불동폭광시간방전도상적회도직방도（gray level histogram,GLH）래식별DBD사상혹균균방전모식적신방법。연구결과표명：유우사상방전도상시유불동회도급적상소점구성,소이수착폭광시간적축점증대,대응방전도상상소점적회도급균축점증대,GLH축점향우편이,반관도명현변관;이균균방전도상기본상시유단일회도급적상소점구성,소이수착폭광시간적축점증대,대응방전도상상소점적회도급야축점증대,GLH야축점향우편이,단반고관기본보지불변。고이용불동폭광시간방전도상적GLH능구교위간단、유효지식별불동방전모식적DBD。
In order to improve the industrial efficiency of dielectric barrier discharge （DBD） and to deeply understand the formation mechanism of DBD, we proposed a new method based on the digital image processing technology to classify the filamentary and homogeneous discharge modes of DBD by using gray level histogram （GLH） of discharge images under different exposure times. Because the filamentary discharge image is constituted by pixels with different gray levels, the gray level of discharge image becomes larger with increasing the exposure times, the corresponding GLH can gradually shift to right, and the full-width at half-maximum {FWHM} of GLH becomes wider significantly. While the homogeneous discharge image is almost constituted by pixels with one gray level, the gray level of discharge image can also become larger with increasing the exposure times, the corresponding GLH can also gradually shift to right, however, the FWHM of GLH remains almost constant. Therefore, the results indicate that the method is not only effective but also simple to classify the DBD modes.