Ultrasonic Air Bubble Detection Employing Signal Processing Techniques

Ozeri, Shaul; Shmilovitz, Doron; Fainguelernt, J.

doi:10.1109/isie.2006.296066

Cited by 8 publications

(6 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, the microwave electromagnetic field distribution was calculated by a custom program from the measured intensity distribution images. Details on the image processing and analysis are presented in previous papers [12], [18], [20], [21].…”

Section: Methodsmentioning

confidence: 99%

“…At the same time, they also can be obstacles causing critical problems in various fluid systems, especially in biomedical systems [8]- [10]. For example, if the hemodialysis system creates air bubbles in a patient's blood, it can cause respiratory failure, stroke, or heart failure, which can make an air embolism life-threatening [8], [11], [12]. Therefore, controlling the size, position, and distribution of bubbles and droplets in tube structures has been an important topic for many applications in fluidics [13]- [15].…”

Section: Introductionmentioning

confidence: 99%

“…The technology to measure and detect air bubbles and liquid droplets in tube structures is an essential tool for controlling bubble and droplet generation in fluid systems. Conventional methods based on electrical, optical and ultrasonic sensors attached to tube structures have been applied to detect bubbles and droplets in many applications and studies on fluid systems [11], [12], [16]- [23]. Although many achievements and technological advances have been made…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Detection of Air Bubbles and Liquid Droplet in a Dielectric Tube by Thermo-Elastic Optical Indicator Microscopy

Lee

2022

IEEE Access

View full text Add to dashboard Cite

A new method based on microwave near-field imaging for the detection of water droplets and air bubbles in a dielectric tube is presented. The present method is based on the optical visualization of the microwave near-field distribution excited around a dielectric tube containing water droplets and air bubbles. In this study, the microwave near-field distribution of a dielectric tube containing air bubbles and water droplets of various sizes was visualized analyzed through the thermo-elastic optical indicator microscope. From the experimental results, it was shown that the present method can measure size and distribution of millimeter-scale bubbles and water droplets in an optically opaque dielectric tube (diameter: 1.0 mm) in a non-contact, non-invasive, and non-destructive manner.INDEX TERMS Microwave imaging, optical inspection technology.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection of Air Bubbles and Liquid Droplet in a Dielectric Tube by Thermo-Elastic Optical Indicator Microscopy

Lee

2022

IEEE Access

View full text Add to dashboard Cite

show abstract

“…the principle of Doppler Effect measuring method The difference between Receive frequency and firing frequency the Doppler frequency shift is f. In addition, the propagation velocity of ultrasonic wave velocity is faster than that of fluid [7]. For those reason, it can be simplified as: 1 3 1 1 2 cos 2 cos…”

Section: B the Principle Of Doppler Effect Methodsmentioning

confidence: 99%

The application of ultrasonic based on Doppler effect used in early kick detection for deep water drilling

Zhou

Zhao

Zhan

et al. 2013

2013 International Conference on Communications, Circuits and Systems (ICCCAS)

View full text Add to dashboard Cite

Early kick detection is critical for preventing gas kicks which pose the greatest threat to safety in deep water drilling. This paper documents the development of kick detection current methods in use and gives a brief introduction for each method. Usually it is difficult to apply the traditional ultrasonic technique in flow measurement for the complexity of the drilling fluid and special structure of the annulus, an improved approach based on Ultrasonic with Doppler Effect is proposed for early kick detection. This method has been successfully applied and verified in a simple kick simulation system. Test results have verified that this Method is effective for early kick detection.

show abstract

“…In [ 4 ], Benech et al presented an ultrasonic sensor with a couple of polymer transducers (a transmitter and a receiver), applied to the pipe where bubbles and liquid flow. In [ 5 ] the authors developed a similar system for bubble identification in drug delivery circuits, based on the generation and detection of acoustic waves through a tube where bubbles can flow. However, both solutions ([ 4 , 5 ]) require putting the transducers in contact with the tube and using a complex electronic circuit for signal processing.…”

Section: Introductionmentioning

confidence: 99%

Optical Multi-Parameter Measuring System for Fluid and Air Bubble Recognition

Bello

Bodo

Merlo

2023

Sensors

View full text Add to dashboard Cite

Detection of air bubbles in fluidic channels plays a fundamental role in all that medical equipment where liquids flow inside patients’ blood vessels or bodies. In this work, we propose a multi-parameter sensing system for simultaneous recognition of the fluid, on the basis of its refractive index and of the air bubble transit. The selected optofluidic platform has been designed and studied to be integrated into automatic pumps for the administration of commercial liquid. The sensor includes a laser beam that crosses twice a plastic cuvette, provided with a back mirror, and a position-sensitive detector. The identification of fluids is carried out by measuring the displacement of the output beam on the detector active surface and the detection of single air bubbles can be performed with the same instrumental scheme, exploiting a specific signal analysis. When a bubble, traveling along the cuvette, crosses the readout light beam, radiation is strongly scattered and a characteristic fingerprint shape of the photo-detected signals versus time is clearly observed. Experimental testing proves that air bubbles can be successfully detected and counted. Their traveling speed can be estimated while simultaneously monitoring the refractive index of the fluid.

show abstract

Ultrasonic Air Bubble Detection Employing Signal Processing Techniques

Cited by 8 publications

References 3 publications

Detection of Air Bubbles and Liquid Droplet in a Dielectric Tube by Thermo-Elastic Optical Indicator Microscopy

Detection of Air Bubbles and Liquid Droplet in a Dielectric Tube by Thermo-Elastic Optical Indicator Microscopy

The application of ultrasonic based on Doppler effect used in early kick detection for deep water drilling

Optical Multi-Parameter Measuring System for Fluid and Air Bubble Recognition

Contact Info

Product

Resources

About