Wyniki 1-1 spośród 1 dla zapytania: authorDesc:"Piotr BOŻEK"

Ultrasound tomography measuring system for acquisition and analysis data DOI:10.15199/48.2019.03.26

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The main purpose of this work is to design a system for data acquisition and data analysis. Control methods include issues related to the processing of data obtained from various sensors located in nodes. Monitoring takes place as part of data processing and parameters obtained and processed (Fig. 1). The device has been designed for tomographic measurements of the properties of processes occurring in reservoirs. Fig. 1 Principle of ultrasonic measurement using the transmission method Measurement technologies are still being built and improved. There is a clear tendency in the industry to implement more optimal related functions with an emphasis on active inspection and monitoring [24-26,18-22]. There are many optimization methods [1,8-15], but to solve the inverse problem in the ultrasound tomography can use [2- 7,16,17,23]. Measurement system One of the active probes sends an ultrasonic signal (the number of sent signal periods will depend on the type / size of the tested object, in the case of the container being tested, 4 periods were sufficient), the rest of the probes are in the listening mode. Active probes measure the time individually from the moment the signal is sent until it is picked up by individual transducers. We assume that this is the time in which ultrasounds overcome the distance between the probes. Fig.2 Signal waveforms in the measurement probe Fig.3. Measurement time of one measuring frame After receiving the signal by all sensors, one measuring frame is terminated, the signal from the next probe is transmitted, the remaining probes receive the signal again. The sequence repeats until each probe gives a signal and all times are collected. Figure 2 shows the signal waveform for one pair of transducers. The signal is fed into a rectangular signal fed to the ultrasound transducer in order 112 PRZEGLĄD ELEKTROTECHNICZNY, ISSN 0033-2097, R. 95 NR 3/2019 to force transmission (probe). The obtained signa[...]

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