High-Accuracy Data Acquisition Architectures for Ultrasonic Imaging

Kalashnikov, Alexander; Ivchenko, V.; Challis, R.E.; Haves-Gill, B.R.

doi:10.1109/tuffc.2007.430

Cited by 17 publications

(11 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6. Worst-case analysis for resistors errors was carried out by simulation of equations (1)- (22) in Matlab. It was found that bias errors are the largest when resistance deviation is of opposite sign for RL and RH.…”

Section: Sensitivity Analysis To Select Reference Loadsmentioning

confidence: 99%

Ultrasonic Air Coupled Transducer Output Impedance Measurement Technique

Svilainis¹,

Chaziachmetovas²,

Álvarez-Arenas³

2019

ElAEE

View full text Add to dashboard Cite

Estimation of the output impedance of ultrasonic transducers is required for electrical matching circuits design and for receiving amplifiers noise optimization. This paper presents a simple technique for transducer output impedance estimation using the same data acquisition system and signals that are conventionally used in non-destructive testing. A pair of ultrasonic transducers is used: one for transmission, one for reception. Received signal is recorded under low and high resistance load and transducer output impedance is then obtained from these two signals. Hence, this technique requires only one measurement channel and bias errors are low (no need for calibration). In addition, it is ground referenced and does not require the transducer to be removed from the positioning fixture. Experimental results obtained using different probing signals have been compared against conventional measurements obtained by an impedance analyser.

show abstract

Section: Sensitivity Analysis To Select Reference Loadsmentioning

confidence: 99%

Ultrasonic Air Coupled Transducer Output Impedance Measurement Technique

Svilainis¹,

Chaziachmetovas²,

Álvarez-Arenas³

2019

ElAEE

View full text Add to dashboard Cite

show abstract

“…Since HAUI was capable of only operating one channel, the experimental setup was limited to monitoring only one area of the corroding samples [3]. Use of only one channel does not capture all the various effect of high surface roughness.…”

Section: Integrating the Analog Front End For Multi Monitoring Intmentioning

confidence: 99%

Experimental setup of continuous ultrasonic monitoring for corrosion assessment

Suchato

Sharples

Light

et al. 2017

2017 IEEE International Ultrasonics Symposium (IUS)

View full text Add to dashboard Cite

“…The data acquisition system used accurate interleaved sampling with equivalent sampling frequency of 2.7 GHz and employed 1024 averages for every recorded waveform [17]. Measurements itself took about 2 s, and it took another 2 s to upload the acquired waveform to a hard disk drive of a personal computer.…”

Section: Ultrasonic Temperature Measurements Using Pulse-echo Mode Fomentioning

confidence: 99%

Ultrasonic Measurements of Temperature in Aqueous Solutions: Why and How

Afaneh

Alzebda

Ivchenko

et al. 2011

Physics Research International

View full text Add to dashboard Cite

The paper describes two different approaches to ultrasonic measurements of temperature in aqueous solutions. The first approach uses two narrowband ultrasonic transducers and support electronics that form an oscillating sensor which output frequency is related to the measured temperature. This low-cost sensor demonstrated sensitivity of about 40 Hz/K at the distance of 190 mm and the operating frequency of about 25 kHz. The second approach utilised pulse-echo mode at the centre frequency of 20 MHz. The reflector featured a cavity that was filled with deionised water. The ultrasound propagation delay in the cavity was related to the temperature in the solution. The experiments were conducted for deionised water, and solutions of sodium persulfate, sodium chloride, and acetic acid with concentrations up to 0.5 M. In the experiments (conducted within the temperature range from 15 to 30• C), we observed increases in the ultrasound velocity for increased temperatures and concentrations as was expected. Measurement results were compared with literature data for pure and seawater. It was concluded that ultrasonic measurements of temperature were conducted with the resolution well below 0.1 K for both methods. Advantages of ultrasonic temperature measurements over conventional thermometers were discussed.

show abstract

High-Accuracy Data Acquisition Architectures for Ultrasonic Imaging

Cited by 17 publications

References 22 publications

Ultrasonic Air Coupled Transducer Output Impedance Measurement Technique

Ultrasonic Air Coupled Transducer Output Impedance Measurement Technique

Experimental setup of continuous ultrasonic monitoring for corrosion assessment

Ultrasonic Measurements of Temperature in Aqueous Solutions: Why and How

Contact Info

Product

Resources

About