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Dissertations / Theses on the topic 'Ultrasonic system'

Author: Grafiati

Published: 10 March 2023

Last updated: 19 July 2025

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1

Albuquerque, Daniel Filipe. "Ultrasonic location system." Doctoral thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11508.

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Doutoramento em Engenharia Electrotécnica<br>Esta tese apresenta um sistema de localização baseado exclusivamente em ultrassons, não necessitando de recorrer a qualquer outra tecnologia. Este sistema de localização foi concebido para poder operar em ambientes onde qualquer outra tecnologia não pode ser utilizada ou o seu uso está condicionado, como são exemplo aplicações subaquáticas ou ambientes hospitalares. O sistema de localização proposto faz uso de uma rede de faróis fixos permitindo que estações móveis se localizem. Devido à necessidade de transmissão de dados e medição de distân

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2

Al, Homsi Mustafa. "Ultrasonic timer system." Connect to this title online, 2005. http://hdl.handle.net/1811/272.

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Senior Honors Thesis (Electrical and Computer Engineering)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains 29 p.; also includes graphics (some col.). Available online via Ohio State University's Knowledge Bank.

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3

Wu, Chung Hao. "DETERMINATION OF BLADDER VOLUMES BY MICROPROCESSOR BASED ULTRASONIC SYSTEM." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275392.

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4

Goode, Ashley Harford. "High resolution ultrasonic imaging system." Thesis, University of Portsmouth, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329278.

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5

Wylie, Stephen Robert. "An underwater ultrasonic imaging system." Thesis, University of Liverpool, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266220.

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6

Redd, Justin D. "An Ultrasonic Angular Measurement System." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/611880.

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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>An original design is presented for a system capable of measuring the relative angle of a flat surface using reflected ultrasonic wave pulses. No physical contact with the surface is necessary. The measurement range is from 0 to 54 degrees. Theoretical resolution is 5 minutes of arc, with actual measured resolution of approximately 20 minutes of arc. The system has performed successfully in limited flight tests, is capable of rates up to 80 angle measurements per

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7

Nadkarni, Aditya. "Reflector geometry specific modeling of an annular array based ultrasound pulse-echo system." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-091207-114218/.

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8

Salido, Monzú David, and Sánchez Oliver Roldán. "Robot Positioning System : Underwater Ultrasonic Measurement." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-5817.

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<p>This document provides a description about how the problem of the detection of thecenter of a defined geometry object was solved.This named object has been placed in an experimental environment surrounded bywater to be explored using microwaves under the water, to try to find a possibletumor. The receiver antenna is fixed in the tip of the tool of an ABB robot.Due to this working method, it was necessary to locate the center of this object tomake correctly the microwave scanning turning always around the actual center. Thiswork not only consist in give a hypothetic solution to the people wh

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9

Thyagaraj, Suraj. "Dynamic System Analysis of 3D Ultrasonic Neuro-Navigation System." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1967797551&sid=3&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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10

York, George W. P. "Architecture and algorithms for a fully programmable ultrasound system /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/5931.

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11

Godfrey, Martin William. "Optical detection system for ultrasonic surface displacements." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/28001.

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The work was carried out with the aim of developing an optical interferometric detection system. This was to be applied to the quantative measurement of low amplitude, high frequency surface displacements (< 1nm at several MHz). Two forms of interferometric detector are investigated. The performance and limitations in particular measurement situations are assessed for both types of interferometer. The first type of detector investigated is a miniature stabilised interferometer. The design of a stabilisation system is given, along with ways in which it can be optimised for a particular environm

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12

Wybrow, M. "An ultrasonic recognition system for flexible manufacturing." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381070.

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13

Ronghong, Xiao, and Wang Hai. "Car Automatic Braking System : based on original reverse warning system." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-11643.

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An original ultrasonic reverse warning system is a new system that can assist drivers while car is braking. It is includes ultrasonic emitter and receiver that can producing and receiving the ultrasonic waves to determine the distance between car and obstacle. But it is not good enough for the safety of cars, in this paper, we are meant to design a system that can help drivers stop the car automatically, an electronic circuit was constructed. According to this circuit we design, a signal was produced to the braking system of car based on the distance between car and obstacle for a safe braking

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14

Henderson, Harold Paulk Bevly David M. "Relative positioning of unmanned ground vehicles using ultrasonic sensors." Auburn, Ala, 2008. http://repo.lib.auburn.edu/EtdRoot/2008/SPRING/Mechanical_Engineering/Thesis/Henderson_Harold_55.pdf.

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15

Chan, Chi Kit. "An ultrasonic self-localized automated guided vehicle system /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?IELM%202006%20CHAN.

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16

Mireault, Alfred Norman. "Mechanical design of an ultrasonic tomographic imaging system." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105689.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 42-44).<br>The paper presents the design and fabrication of a prototype for limb imaging aimed at tackling several of the issues. The design of the a US probe positioning system is intended to augment a system for motion measurement as well as a framework for the integration of motion and US data. The design of the imaging system below represents early steps towards a full-volume imaging technique for use in comp

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17

Pan, Lin. "Pharmaceutical powder dispensing by ultrasonic vibration dosing system." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/386902/.

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Powder technology is one of the most important parts in manufacturing industry when materials applied in large quantities of solid particles. Dispensing technology for powders can significantly improve operation efficiency in manufacturing processes. The powder dispensing technologies have a broad range of applications. The powders exhibit different flow behaviours due to different physical properties. This project aims to reveal the dispensing mechanism and pharmaceutical powder flow behaviour in a designed dispensing hopper under the ultrasonic mechanical vibration, and to develop a powder d

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18

Sebastian, Dalys. "Development of a field-deployable voice-controlled ultrasound scanner system." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0625104-170951/.

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19

Bergh, Charles Ferguson. "Development of an interferometric system for process monitoring." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19281.

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20

Ocklind, Henrik. "Driver Circuit for an Ultrasonic Motor." Thesis, Linköpings universitet, Elektroniksystem, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-101013.

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To make a camera more user friendly or let it operate without an user the camera objective needs to be able to put thecamera lens in focus. This functionality requires a motor of some sort, due to its many benefits the ultrasonic motor is apreferred choice. The motor requires a driving circuit to produce the appropriate signals and this is what this thesis is about.Themain difficulty that needs to be considered is the fact that the ultrasonic motor is highly non-linear.This paper will give a brief walk through of how the ultrasonic motor works,its pros and cons and how to control it. How thedr

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21

Faltpihl, Peter. "Ultrasonic sensing design and implementation for detecting and interacting with human beings in an AI system." Thesis, Linköpings universitet, Fysik och elektroteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78429.

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This thesis covers the work performed to implement a Sonar sensor solution to detect human beings on a robotic lamp. A previously available solution was evaluated, but had to be redesigned due to faulty electronics. New hardware was developed, together with software to control this hardware. A software implementation of this new Sonar sensor system was also developed, on the robotic lamp itself. The nature of this thesis was very practical, so this report will focus on describing the different design stages that were performed, together with a wide discussion about future improvements and work

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22

Lu, Yicheng. "Real time defect detection in welds by ultrasonic means." Thesis, Brunel University, 1992. http://bura.brunel.ac.uk/handle/2438/4966.

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A computer controlled weld quality assurance system has been developed to detect weld defects ultrasonically whilst welding is in progress. This system, including a flash analogue to digital converter and built-in memories to store sampled data, a peak characters extractor and a welding process controller, enabled welding processes to be controlled automatically and welding defects to be detected concurrently with welding. In this way, the weld quality could be satisfactorily assured if no defect was detected and the welding cost was minimised either through avoiding similar defects to occur o

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23

Managuli, Ravi A. "Programmable ultrasound color flow system /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/6064.

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24

Boongsood, Wanwanut. "Design and modelling of a miniaturised ultrasonic machining system." Thesis, University of Liverpool, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.617031.

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Ultrasonic Machining (USM) is the outstanding manufacturing process for producing complex cavities for all materials subjected to brittle fracture without the requirements of electrical/thermal conductivity or chemical reactivity. As a result, a wide range of materials can be fabricated efficiently. Even though the process benefits a variety of applications, the use of this method is not widespread because of the complexity of a large number of interacting parameters affecting the machining operation. Additionally, commercial machines available in the market tend to be rather large. In an age

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25

Gunarathne, Gunti P. P. "A new real-time high speed ultrasonic imaging system." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/32232.

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An ultrasonic imaging technique was to be developed for sizing and characterization of defects in thick sections of steel. The problems generally found with the existing techniques in such applications are low speed, inadequate image quality, large size and high cost.

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26

Moya, Jorge A. Salcedo. "Ultrasonic inspection of underwater piping system with thick coatings." Connect to resource, 1994. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1260632892.

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27

Arya, Ishan, and Viswanaath Sundaram. "A System Study Of Ultrasonic Transceivers For Haptic Applications." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-152346.

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We are investigating the use of ultrasound in Haptic applications. Initially abrief background of ultrasonic transducers and its characteristics were presented.Then a theoretical research was documented to understand the concepts that govern haptics. This section also discusses the algorithm adopted by various researches to implement haptics in the professional world. Then investigations were made to understand the behavior of ultrasonic transducers and conduct soft-ware simulations to obtain various results. At first simulations were conducted on Field II software. This simulations involved t

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28

Lefley, Paul W. "A sensing system for two dimensional acoustical imaging." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328408.

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29

Jeffery, Roland. "Diagnostic ultrasound imaging and its role within musculoskeletal medicine a dissertation submitted in partial fulfilment for the degree of Master of Health Science, Auckland University of Technology, March 2003." Full thesis, 2003.

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30

Johnson, Charles Alan 1957. "A CONTROL SYSTEM FOR THE APPLICATION OF SCANNED, FOCUSSED ULTRASOUND IN HYPERTHERMIA CANCER THERAPY." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276438.

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31

Anhalt, Dennis Paul 1960. "MODIFICATION OF A DIAGNOSTIC ULTRASOUND UNIT'S MOVEMENT SYSTEM TO PERFORM SCANNING DURING FOCUSSED, ULTRASOUND HYPERTHERMIA." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275546.

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32

White, John D. H. "A random signal ultrasonic test system for highly attenuating media." Thesis, Keele University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315234.

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33

Chan, Lok-sang, and 陳樂生. "Adaptive flow detector and estimator for ultrasound high frame rate vector flow imaging." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47753043.

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Cardiovascular diseases is a leading cause of death worldwide and improvement of the corresponding screening tool is the best way to deal with this clinical problem. In this thesis we attempted to develop a framework of ultrasound high frame rate vector flow imaging (VFI) by emphasizing on the design of corresponding flow detector and flow estimator. We believe that the high temporal resolution and the complex blood flow visualization ability of high frame rate VFI enables it to be further developed as a reliable flow imaging modality for cardiological examination. In order to achieve

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34

Yang, Chuan-Hao. "A person-tracking mobile robot using an ultrasonic positioning system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Dec%5FYang.pdf.

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Thesis (M.S. in Electrical and Computer Engineering)--Naval Postgraduate School, December 2005.<br>Thesis Advisor(s): Xiaoping Yun. Includes bibliographical references (p.49-51). Also available online.

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35

Robinson, Robert James. "An expert system to aid ultrasonic flaw modelling results interpretation." Thesis, University of Strathclyde, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428856.

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36

Kiernan, Michael T. "An acousto-ultrasonic system for the evaluation of composite materials." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/76441.

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A presentation is given of an acousto-ultrasonic system for the evaluation of composite materials. First, a brief statement will be made on the acousto-ultrasonic technique and its relative worth compared to other nondestructive testing techniques as applied to composite materials. The following two chapters describe the system instrumentation and system software, respectively. Next, comments are given regarding the implementation of the system for research on graphite/epoxy laminates, with additional remarks concerning efforts to evaluate aluminum/graphite tubes with the system. This includes

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37

Williams, Lauren M. "Fast Chirped Signals for a TDMA Ultrasonic Indoor Positioning System." DigitalCommons@CalPoly, 2020. https://digitalcommons.calpoly.edu/theses/2150.

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In this paper, a new concept for ultrasonic indoor positioning based on instantaneous frequency of ultrasonic signals is presented. Nonlinear phase characteristics of ultrasonic transducers introduce a frequency deviation in ultrasonic signals. By sweeping at very fast rates, a large spike in the deviation is introduced. The artefacts observable in instantaneous frequency estimations are highly localized and present an opportunity for accurate frequency detection. In order to be useful, the artefacts need to take place within the pulse and have sufficient magnitude for accurate processing. The

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Karuturi, Hemanth Surya, and Megha Sanjeev Reddy Karri. "Raspberry Pi Based IoT System for Bats Detection at Wind Farms." Thesis, Blekinge Tekniska Högskola, Institutionen för matematik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20899.

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Context: Large numbers of bats are killed by collisions with wind turbines and there is at present no accepted method of reducing or preventing this mortality. We designed a system, which detects and records any bats’ activity in and around the surroundings of wind turbines. The system can help to study bats by identifying the species that are present in that particular locality. Objectives: The main objective of this thesis is to design an ultrasound-based IoT system, which detects the bats to prevent them from clashing with wind turbines. The design is based on a study of bats’ behaviors. Me

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39

Johnson, Wesley Byron. "Design and Testing of a Laboratory Ultrasonic Data Acquisition System for Tomography." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/30938.

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Geophysical tomography allows for the measurement of stress-induced density changes inside of a rock mass or sample by non-invasive means. Tomography is a non-destructive testing method by which sensors are placed around a sample and energy is introduced into the sample at one sensor while the other sensors receive the energy. This process is repeated around the sample to obtain the desired resolution. The received information is converted by a mathematical transform to obtain a tomogram. This tomogram shows a pixelated distribution of the density within the sample. Each pixel represents

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40

Lopez-Sanchez, Ana Lilia. "Ultrasonic system models and measurements /." 2005.

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41

Chang, Chi-Lon, and 張慶龍. "Ultrasonic Motor Positioning Assistive System." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/24047564978262569459.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>94<br>In recent few years, the traffic and the fortuitous accidents result in paralytic events frequently, these disabled persons urgently need assistive device to support their daily activities. The purpose of this thesis is to use ultrasonic sensor components as a phase shift detector to help disabled persons who want to use mouth -control Text Input system as the input device of the computer by themselves. They can only slightly turn their head and utilize ultrasonic components to detect their shifting behavior, it will produce a signal to microprocessor to

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42

Ho, Tsuo-Ming, and 何祚明. "High Frequency Ultrasonic Imaging System." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/57645816658374046599.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>90<br>Ultrasound imaging is a well-established imaging modality that provides diagnostic information in the form of cross-sectional images of soft tissue. However, for many clinical applications involving subtle tissue structure, the resolution of the conventional ultrasound imaging system that operates between 2 and 10 MHz is inadequate. Recent developments have taken advantage of the fact that resolution increases linearly with frequency. In this paper, a high frequency ultrasonic imaging system with high resolution and multi-format imaging has been developed for

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Chang, Bo-Wun, and 張博文. "Deviation analysis of ultrasonic positioning system." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/81220140568927441883.

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碩士<br>清雲科技大學<br>電子工程研究所<br>94<br>An ultrasonic positioning system is introduced in this thesis. The system has three sensors. These sensors are located at different apex of the equilateral triangle. An ultrasonic emitter is arranged at center of the equilateral triangle. With the emitter and the sensors, obstacles in front of the blind can be detected by using time-of-flight of the ultrasonic wave. Because amplitude recession, temperature and humidity can influence the measurement accuracy, deviation analysis is very important for the ultrasonic positioning system. An area of ±15°, 1 meter to

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Yeh, Yung-An, and 葉永安. "Circuit Design of Ultrasonic Guiding System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/10242727409915758432.

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碩士<br>清雲科技大學<br>電機工程研究所<br>98<br>A circuit design of ultrasound guiding system is introduced. The system has one ultrasonic emitter and three sensors. These sensors are located at different apex of an equilateral triangle. The emitter is arranged at center of the equilateral triangle. With the emitter and the sensors, obstacles in front of the blind can be detected by using time-of-flight of the ultrasonic wave. Because amplitude recession, temperature and humidity may influence the measurement accuracy, a small area of 20 to 140 centimeters in front of the sensors has been considered and

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Kao, Kuang-Chien, and 高光前. "Automatic Ultrasonic System for Flaw Inspection." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/49636931409597561039.

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碩士<br>國立屏東商業技術學院<br>資訊管理系<br>92<br>Ultrasound has many important applications in nondestructive testing. Since ultrasonic signal can penetrate many materials, it is widely used for detection of flaws. The evaluations of welding are the main purpose of this paper. The use of ultrasound is limited by several interferences, such as geometric inter-face, coarse grain, mode conversion and ringing. It will be practically difficult to perform evaluation if the originally received ultrasonic signal is used directly as false judgment may be obtained. This paper will use the methods of signal processing

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Chao-HungTseng and 曾兆弘. "Design of ultrasonic distance measurement system." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/81133627966694429428.

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碩士<br>中華大學<br>機械與航太工程研究所<br>93<br>The advantages of the Ultrasonic Ranger Finder(URF) are simple hardware, easy to obtain the components and the components are inexpensive. Our researches are to investigate the performances of the single frequency ultrasonic range finder to the best accuracy for high precision measurement. The time of flight ranging algorithm is the typical method for the range measure. But in this TOF method, the specific returned signal must have sufficient amplitude and the pulse shape, otherwise, there will have accuracy errors. We have used the software as well to com

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Tien, Y. F., and 田亦凡. "High Speed Ultrasonic Image Inspection System." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/49369719312725345137.

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碩士<br>國立成功大學<br>機械工程學系<br>89<br>Ultrasound is a very important tool which has many applications in biological, medical and engineering practices. One can use ultrasound to measure the wave velocity and find the physical properties including Young’s modulus, shear modulus, etc. Ultrasound is also used for detecting cracks and voids in materials in a non-destructive way, so that the defects can be found out and characterized in advance. This thesis introduce a ultrasonic scanning system which consists of a transducer, a peak detector, a water tank, a motorized X-Y axis scanning frame,

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Huang, Yu-Ya, and 黃郁雅. "Velocity Measurement by Ultrasonic Doppler System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/96605762763682191332.

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碩士<br>國立臺灣大學<br>工程科學及海洋工程學研究所<br>100<br>The velocity measurement is an important item in various engineering field. Ultrasound is non-invasive, non- destroyed, high security, and attenuated lower than optical methods, so it is frequently applied to underwater measurement. This work establishes a pulsed ultrasonic Doppler system, which is based on scattering and Doppler-effect, consists of burst signal generator, power amplifier, transducer, pre- amplifier, oscilloscope, and digital signal processing software, Matlab. The measurement was conducted in a cavitation tank of uniform velocity distri

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R, UNNI. "PC Based Ultrasonic Intrusion Detection System." Thesis, 2018. http://ethesis.nitrkl.ac.in/9945/1/2018_MT_216EC3221_RUnni_PC.pdf.

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An effective low-cost intrusion detection system is necessary for smart homes, offices, server room since number of theft operations are reported. For monitoring the intrusion activity an intrusion detection system is required which is placed in a monitoring location and track the intruders distance, velocity, and date of occurrence. The ultrasonic sensor is used for motion detection since it has good accuracy and is able to track the intruders distance in the range of meters. The HC-SR04 ultrasonic sensor have high frequency, high sensitivity, and high penetrating power so it can easily sense

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Chi-TseKuo and 郭奇澤. "An FPGA-Based Ultrasonic Image Scanning System and Non-immersed Ultrasonic Inspection." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/94422215381460325358.

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碩士<br>國立成功大學<br>機械工程學系<br>102<br>This study constructs a Field Programmable Gate Array (FPGA) based non-destructive inspection system and a non-immersion ultrasonic scanning device. The inspection system exploits the high integration and flexibility of FPGA for real-time motion monitoring, acoustic trigger, data acquisition and signal analysis and reduces the host system loading by sending shortest data. Furthermore a concise concept of non-immersion ultrasonic scanning device is designed for non-destructive testing specimen that is apt to rust. This scanning system realizes a multiple profile

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