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Online monitoring of transit-time ultrasonic flowmeters based on fusion of optical observation

机译:基于光学观测融合的时差超声波流量计在线监测

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摘要

It is well-known that transit-time ultrasonic flowmeters (TTUF) are unsuitable for bubble-contained flows. This paper presents a new online monitoring method based on optical observation, which monitors the functionality of the TTUF in the presence of bubbles in the fluid. The method avoids the unnecessary Emergency Shutdowns (ESD) due to bubble presence in the fluid by bubble detection. The proposed method accomplishes bubble identification through a combination of image processing and wavelet analysis. In addition, a new method is proposed which estimates single bubble size in horizontal pipes using a data fusion approach.
机译:众所周知,渡越时间超声波流量计(TTUF)不适合气泡包含的流量。本文提出了一种基于光学观察的新型在线监测方法,该方法可以在流体中存在气泡的情况下监测TTUF的功能。该方法避免了由于气泡检测导致流体中存在气泡而导致的不必要的紧急停机(ESD)。所提出的方法通过图像处理和小波分析相结合来完成气泡识别。另外,提出了一种新的方法,该方法使用数据融合方法来估计水平管道中的单个气泡大小。

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