航天推进技术研究院主办
[1]钱晨,高新妮,胡保林,等.基于图像处理的喷嘴雾化角测试方法[J].火箭推进,2022,48(03):63-70.
QIAN Chen,GAO Xinni,HU Baolin,et al.Measurement method of nozzle atomization angle based on image processing[J].Journal of Rocket Propulsion,2022,48(03):63-70.
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QIAN Chen,GAO Xinni,HU Baolin,et al.Measurement method of nozzle atomization angle based on image processing[J].Journal of Rocket Propulsion,2022,48(03):63-70.
基于图像处理的喷嘴雾化角测试方法
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
48
期数:
2022年03期
页码:
63-70
栏目:
研究与设计
出版日期:
2022-06-22
- Title:
- Measurement method of nozzle atomization angle based on image processing
- 文章编号:
- 1672-9374(2022)03-0063-08
- 分类号:
- V238
- 文献标志码:
- A
- 摘要:
- 针对喷嘴雾化角测量,开展基于图像处理的喷嘴雾化角测量方法研究,设计搭建了采用远心透镜光学成像测量系统,研究基于图像灰度阈值分割、边缘识别和角度分析的图像处理算法,通过对喷雾图像进行处理得到雾化角与偏斜角。为验证系统测量精度,采用标准角度块进行测量,角度测量最大相对误差为1.01,测量不确定度优于0.10°。在此基础上,将上述光学成像测量系统应用于A、B、C这3种型号喷嘴雾化角测试,结果显示:该方法能够有效获得清晰的图像,利用阈值分割和边缘识别算法能够获得雾化角与偏斜角。A、B、C这3种典型单个喷嘴多次测试雾化角的测量不确定度分别为0.806°、0.279°、0.624°,偏斜角的测量不确定度为0.207°、0.402°、0.620° A、B、C型不同喷嘴多次测试雾化角平均测量不确定度为0.659°、0.427°和1.291°,偏斜角平均测量不确定度平均值为0.389°、0.231°和0.487°。因此,基于图像处理的喷嘴雾化角测试方法可为评判喷嘴雾化性能提供直观有效依据。
- Abstract:
- Aiming at the measurement of nozzle atomization angle, the measurement method of nozzle atomization angle based on image processing is studied.A telecentric lens optical imaging measurement system is designed and built,and the image processing algorithm based on image gray threshold segmentation, edge recognition and angle analysis is studied.The atomization angle and deflection angle are obtained by processing the spray image.In order to verify the measurement accuracy of the system, the standard angle block is used for measurement.The maximum relative error of angle measurement is 1.01 and the measurement uncertainty is better than 0.10°.On this basis, this optical imaging measurement system is applied to the atomization angle test of A, B and C three types of nozzles.The results show that the method can effectively obtain clear images, and the atomization angle and deflection angle can be obtained by threshold segmentation and edge recognition algorithm.The measurement uncertainty of atomization angle for three typical single nozzles A, B and C is 0.806°, 0.279° and 0.624°,and the measurement uncertainty of deflection angle is 0.207°, 0.402° and 0.620°,respectively.The average measurement uncertainty of atomization angle for A, B and C nozzles is 0.659°, 0.427° and 1.291°, and the average measurement uncertainty of deflection angle is 0.389°, 0.231° and 0.487°, respectively.Therefore, the test method of nozzle atomization angle based on image processing can provide intuitive and effective basis for evaluating nozzle atomization performance.
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备注/Memo
收稿日期:2021-12-08 修回日期:2022-04-19
基金项目:国家自然科学基金(51806144)
作者简介:钱晨(1998—),男,硕士,研究领域为气液两相流测量方法。
通信作者:杨斌(1985—),男,博士,副教授,研究领域为多相流与燃烧测量方法。
更新日期/Last Update:
1900-01-01