频闪照明图像采集法及涂料脉冲发光时间影响  

Stroboscopic illumination image acquisition method and influence of the paint pulse luminescence time

作　　者：葛宁 高丽敏[1,2] 李瑞宇 欧阳波 王磊[1,2] GE Ning;GAO Limin;LI Ruiyu;OUYANG Bo;WANG Lei(School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China;The National Key Laboratory of Aerodynamic Design and Research,Northwestern Polytechnical University,Xi’an 710129,China;School of Aerospace Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西北工业大学动力与能源学院,西安710129 [2]西北工业大学翼型、叶栅空气动力学国家级重点实验室,西安710129 [3]西安交通大学航天航空学院,西安710049

出　　处：《航空动力学报》2024年第10期428-434,共7页Journal of Aerospace Power

基　　金：国家自然科学基金重大项目(51790512);引智计划(B17037);民机专项;西北工业大学博士论文创新基金(CX202009)。

摘　　要：提出了频闪照明图像采集方法来解决压力敏感涂料测量技术应用于旋转模型的图像采集问题,根据该方法组建了测量系统。以小型风扇为对象开展了图像采集实验,探索了涂料脉冲发光时间对图像质量影响。结果表明:图像运动模糊长度不超过4像素时,图像的清晰度与静止状态的参考图像基本一致。在总涂料发光时间一致时,涂料脉冲发光时间越短,图像噪声水平越小,信噪比越高,适用于较高轮缘速度的旋转对象。A method of image acquisition method based on stroboscopic illumination was proposed for measurement of pressure sensitive paint applied to rotating model.In accordance with this method,a measurement system was developed.A small fan was used as the object for the image acquisition experiment,which examined the influence of the paint pulse luminescence time on the quality of the image.The results showed that:when the image motion blur length was not greater than 4 pixels,the image clarity was essentially the same as the reference image in the static condition;with a consistent total paint luminescence time,the shorter paint pulse luminescence time indicated the lower image noise level and the higher signal-to-noise ratio,making it suitable for rotating objects with high speed.

关 键 词：旋转模型 频闪照明 相位锁定 压力敏感涂料 涂料脉冲发光时间 信噪比 运动模糊 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]