Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers

The thesis, Acoustical Experiments on A-Scan and B-Scan Imaging Using Two Low Frequency Ultrasonic Transducers, aims to determine the factors that affect A-scan and B-scan pulse-echo imaging in air, water and semi-solid mediums using 2 ultrasonic transducers, namely: a 50 Khz transceiver and a 40 Kh...

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Main Authors: Diaz, Jose Antonio S., Noel, Anna Marie F., Tang, Reynold Kenneth C., Velasquez, Ma. Luisa C.
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Language:English
Published: Animo Repository 1995
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Online Access:https://animorepository.dlsu.edu.ph/etd_bachelors/9390
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Institution: De La Salle University
Language: English
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spelling oai:animorepository.dlsu.edu.ph:etd_bachelors-100352021-09-06T20:51:32Z Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers Diaz, Jose Antonio S. Noel, Anna Marie F. Tang, Reynold Kenneth C. Velasquez, Ma. Luisa C. The thesis, Acoustical Experiments on A-Scan and B-Scan Imaging Using Two Low Frequency Ultrasonic Transducers, aims to determine the factors that affect A-scan and B-scan pulse-echo imaging in air, water and semi-solid mediums using 2 ultrasonic transducers, namely: a 50 Khz transceiver and a 40 Khz transmitter and receiver.Pulse-echo imaging is the most popular type of imaging modality in ultrasonic imaging. In this type of modality, the system transmits a short burst of ultrasonic signal and it listens for the return echoes to the system. It then measures the time-of-flight traveled by the ultrasonic signal as a function of the distance. The measured time can give both range and size information. Different mediums such as air, water and semi-solid have different acoustical impedance. Acoustical impedance is related to the density and elasticity of the medium. With respect to this characteristic, the thesis also aims to determine the limitations of each transducer in different mediums.The heart of the hardware component of the system is its Data Acquisition System. It consists mainly of an analog-to-digital converter and an interface chip. The time-of-flight of the echo is first converted to its corresponding digital value and it is then interfaced to the computer. Upon interface, the software component (using Turbo C++) will compute for the corresponding size and distance of the digital time-of-flight. The software also provides the range of values that will determine the different colors that will be used in producing a grey-scale image of the object. 1995-01-01T08:00:00Z text https://animorepository.dlsu.edu.ph/etd_bachelors/9390 Bachelor's Theses English Animo Repository Ultrasonic transducers Acoustic imaging Diagnosis, Ultrasonic Digital electronics Electronic digital computers--Programming Electronic data processing Engineering
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
language English
topic Ultrasonic transducers
Acoustic imaging
Diagnosis, Ultrasonic
Digital electronics
Electronic digital computers--Programming
Electronic data processing
Engineering
spellingShingle Ultrasonic transducers
Acoustic imaging
Diagnosis, Ultrasonic
Digital electronics
Electronic digital computers--Programming
Electronic data processing
Engineering
Diaz, Jose Antonio S.
Noel, Anna Marie F.
Tang, Reynold Kenneth C.
Velasquez, Ma. Luisa C.
Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
description The thesis, Acoustical Experiments on A-Scan and B-Scan Imaging Using Two Low Frequency Ultrasonic Transducers, aims to determine the factors that affect A-scan and B-scan pulse-echo imaging in air, water and semi-solid mediums using 2 ultrasonic transducers, namely: a 50 Khz transceiver and a 40 Khz transmitter and receiver.Pulse-echo imaging is the most popular type of imaging modality in ultrasonic imaging. In this type of modality, the system transmits a short burst of ultrasonic signal and it listens for the return echoes to the system. It then measures the time-of-flight traveled by the ultrasonic signal as a function of the distance. The measured time can give both range and size information. Different mediums such as air, water and semi-solid have different acoustical impedance. Acoustical impedance is related to the density and elasticity of the medium. With respect to this characteristic, the thesis also aims to determine the limitations of each transducer in different mediums.The heart of the hardware component of the system is its Data Acquisition System. It consists mainly of an analog-to-digital converter and an interface chip. The time-of-flight of the echo is first converted to its corresponding digital value and it is then interfaced to the computer. Upon interface, the software component (using Turbo C++) will compute for the corresponding size and distance of the digital time-of-flight. The software also provides the range of values that will determine the different colors that will be used in producing a grey-scale image of the object.
format text
author Diaz, Jose Antonio S.
Noel, Anna Marie F.
Tang, Reynold Kenneth C.
Velasquez, Ma. Luisa C.
author_facet Diaz, Jose Antonio S.
Noel, Anna Marie F.
Tang, Reynold Kenneth C.
Velasquez, Ma. Luisa C.
author_sort Diaz, Jose Antonio S.
title Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
title_short Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
title_full Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
title_fullStr Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
title_full_unstemmed Acoustical experiments on A-scan and B-scan using two low-frequency ultrasonic transducers
title_sort acoustical experiments on a-scan and b-scan using two low-frequency ultrasonic transducers
publisher Animo Repository
publishDate 1995
url https://animorepository.dlsu.edu.ph/etd_bachelors/9390
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