Дисертації з теми "Real-time acquisition"
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1
Noriega, Gerardo. "MULTIPROCESSOR BASED REAL-TIME DATA ACQUISITION SYSTEMS." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/608903.
Анотація:
International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaEquipment for data collection and recording has widespread use in a variety of engineering applications. This paper deals with the use of multiprocessor-based architectures in digital data acquisition systems, emphasizing advantages in terms of flexibility and overall system throughput, and the characteristics of the embedded operating system. An overview of the basic architecture of typical data acquisition systems is first presented, followed by a description of a multiprocessing architecture for data acquisition in real-time environments where multiple sampling rates are employed to monitor analog and digital data from different sources. Software and hardware techniques are covered, including the multiplexing of analog signals, digital signal processing, use of masking techniques in the processing of serial data streams, and the use of multi-point buses for communications with peripheral devices. The characteristics of a real-time multi-tasking operating system are analysed. This is the core of the software in any data acquisition system which must meet real-time constraints. In turn, the core of the operating system is the real-time kernel. Emphasis is put into the organization of the kernel, covering issues such as kernel primitives, service calls, interrupt service routines, process scheduling, memory management, and communications and synchronization between processes.
2
Ghosh, Sushmita. "Real time data acquisition for load management." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/45726.
Анотація:
Demand for Data Transfer between computers has increased ever since the introduction of Personal Computers (PC). Data Communicating on the Personal Computer is much more productive as it is an intelligent terminal that can connect to various hosts on the same I/O hardware circuit as well as execute processes on its own as an isolated system.
Yet, the PC on its own is useless for data communication. It requires a hardware interface circuit and software for controlling the handshaking signals and setting up communication parameters. Often the data is distorted due to noise in the line. Such transmission errors are imbedded in the data and require careful filtering.
The thesis deals with the development of a Data Acquisition system that collects real time load and weather data and stores them as historical database for use in a load forecast algorithm in a load management system. A filtering technique has been developed here that checks for transmission errors in the raw data. The microcomputers used in this development are the IBM PC/XT and the AT&T 3B2 supermicro computer.Master of Science
3
Sridharan, Kousik Sarathy. "Real-time acquisition and analysis ofElectro-oculography signals." Thesis, Linköpings universitet, Biomedicinsk instrumentteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-76734.
Анотація:
Electro-oculography signals are corneo-retinal potentials that carry informationpertaining to eye movements. This information can be used to estimate drowsinesslevel of the subject which could provide interesting insights into research of acci-dent prevention. Of all features present, blink duration has been proved to be aneffective measure of drowsiness. The aim of this thesis work is to build a portablesystem to acquire and analyze electro-oculographic (EOG) signals in real-time.The system contains two sub-systems; a hardware sub-system that consists of thefilters, amplifiers, data acquisition card and isolation and the software sub-systemthat contains the program to acquire and analyze the signal and present the resultsto the observer. The filters were designed starting with simulation, implementa-tion on the prototype board, culminating in the design of a printed circuit board(PCB) and packaging. The complete software was written in PythonTMusing sev-eral relevant libraries for data processing. A text-based user interface was createdto enable easy user interaction. The results are graphically displayed in real-time. Ex-situ tests were done with two volunteers while in-situ test was done onone subject. The data from the in-situ tests showed "good signal quality" in a"noisy" environment concurring with the design specifications. To motivate theimportance of calibration, two calibration paradigms were used during ex-situtests, where one paradigm records only normal blinks while the other records longblinks and the results showed differences in detection and error rates. The obser-vations made from performance tests at various levels gave "satisfactory results"and proved the usefulness of the system for experimental purposes in-situ.
4
Powell, Richard, and Jeff Kuhn. "HARDWARE- VS. SOFTWARE-DRIVEN REAL-TIME DATA ACQUISITION." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/608291.
Анотація:
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThere are two basic approaches to developing data acquisition systems. The first is to buy or develop acquisition hardware and to then write software to input, identify, and distribute the data for processing, display, storage, and output to a network. The second is to design a system that handles some or all of these tasks in hardware instead of software. This paper describes the differences between software-driven and hardware-driven system architectures as applied to real-time data acquisition systems. In explaining the characteristics of a hardware-driven system, a high-performance real-time bus system architecture developed by L-3 will be used as an example. This architecture removes the bottlenecks and unpredictability that can plague software-driven systems when applied to complex real-time data acquisition applications. It does this by handling the input, identification, routing, and distribution of acquired data without software intervention.
5
Modise, Stephen Karabo. "Development of a real time radar acquisition system." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/7704.
Анотація:
Includes bibliographical references.The Geosonde radar system, developed for use in bore holes, includes a data acquisition system. Development is currently being conducted by the Radar Remote Sensing Group at the University of Cape Town and Stellenbosch University. This thesis describes the development of a real time operating system and an overall upgrade of basic interfaces to the Geosonde system. The current system employs the use of an embedded MS-DOS operating system and supports basic user control and data exporting over a serial line. The objectives of this thesis are to perform major upgrades on the system by introducing an XML based form of network control and NTP synchronization of the processing board. As a result, an investigation into the adequacy of MS-DOS as a target operating system, bearing in mind the intended upgrades, was carried out. Taking into consideration the failings of MS-DOS as far as the system requirements are concerned, an investigation into available real time executives was conducted and a decision based on the requirements was made. Embedded GNU/Linux was chosen as the target software platform. The software design of the application shows all the necessary design issues considered. The implementation phase of the thesis describes all the tools necessary to implement the embedded Linux system and all the components necessary to meet the needs of the Geosonde system. The network and serial interfaces were tested and shown to be fully functional. The XML based control in particular offers a more flexible and more platform independent solution than the serial interface.
6
Powers, Linda S., Yiming Zhang, Kemeng Chen, Huiqing Pan, Wo-Tak Wu, Peter W. Hall, Jerrie V. Fairbanks, Radik Nasibulin, and Janet M. Roveda. "Low power real-time data acquisition using compressive sensing." SPIE-INT SOC OPTICAL ENGINEERING, 2017. http://hdl.handle.net/10150/626011.
Анотація:
New possibilit ies exist for the development of novel hardware/software platforms havin g fast data acquisition capability with low power requirements. One application is a high speed Adaptive Design for Information (ADI) system that combines the advantages of feature-based data compression, low power nanometer CMOS technology, and stream computing [1]. We have developed a compressive sensing (CS) algorithm which linearly reduces the data at the analog front end, an approach which uses analog designs and computations instead of smaller feature size transistors for higher speed and lower power. A level-crossing sampling approach replaces Nyquist sampling. With an in-memory design, the new compressive sensing based instrumentation performs digitization only when there is enough variation in the input and when the random selection matrix chooses this input.
7
Jonas, Eric Michael. "Real-time analog acquisition of electrophysiological signals with Soma." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/61306.
Анотація:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2009.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 71-72).
Soma is a high-density recording system for real-time acquisition and analysis of extracellular electrophysiological signals. Here I describe the design, implementation, and evaluation of the Soma Acquisition Board, an 8-channel low-latency amplifier for amplification and digitization of these signals. Design trade-offs are discussed, and the resulting analog performance is quantified.
by Eric Michael Jonas.
M.Eng.
8
Dahan, Michael. "RTDAP: Real-Time Data Acquisition, Processing and Display System." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614629.
Анотація:
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaThis paper describes a data acquisition, processing and display system which is suitable for various telemetry applications. The system can be connected either to a PCM encoder or to a telemetry decommutator through a built-in interface and can directly address any channel from the PCM stream for processing. Its compact size and simplicity allow it to be used in the flight line as a test console, in mobile stations as the main data processing system, or on-board test civil aircrafts for in-flight monitoring and data processing.
9
Achtzehnter, Joachim, and Preston Hauck. "REAL-TIME TENA-ENABLED DATA GATEWAY." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605318.
Анотація:
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThis paper describes the TENA architecture, which has been proposed by the Foundation Initiative 2010 (FI 2010) project as the basis for future US Test Range software systems. The benefits of this new architecture are explained by comparing the future TENA-enabled range infrastructure with the current situation of largely non-interoperable range resources. Legacy equipment and newly acquired off-the-shelf equipment that does not directly support TENA can be integrated into a TENA environment using TENA Gateways. This paper focuses on issues related to the construction of such gateways, including the important issue of real-time requirements when dealing with real-world data acquisition instruments. The benefits of leveraging commercial off-the-shelf (COTS) Data Acquisition Systems that are based on true real-time operating systems are discussed in the context of TENA Gateway construction.
10
Fujii, Toshiaki, Tomohiro Yendo, and Masayuki Tanimoto. "Ray-Space Transmission System with Real-Time Acquisition and Display." IEEE, 2007. http://hdl.handle.net/2237/9525.
11
Dénarié, Bastien Emmanuel. "Real-time 3-D echocardiography:challenges of parallel transmission and acquisition." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for sirkulasjon og bildediagnostikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24423.
Анотація:
Ultrasound imaging is a well-established, noninvasive and relatively low cost method for assessing the cardiac function. By providing dense image volumes in real-time, three-dimensional echocardiography could improve and automatize the diagnostic by professionals. But the limited speed of sound still prevents the acquisition of large fields of view at frame rates sufficient to assess the complex dynamics of a beating heart. To increase the frame rate, parallelizations of both the transmission and reception processes is being proposed. In this thesis, the challenges of Multi-Line Transmission (MLT) and two Synthetic Transmit Aperture (STA) techniques for imaging the heart in real-time 3-D when an optimal image quality is required are addressed across four scientific publications. When transmitting multiple focused ultrasound pulses in parallel, interactions between the simultaneous beams are prone to generate artifacts, aka. MLT crosstalks. Cross-talks appear as additional clutter in the image, notably at every location where the edge waves of one beam overlap with the main-lobe of another beam, both on transmission and reception. To isolate the parallel beams, we propose to combine MLT with the low transmit side-lobe levels of second harmonic imaging. 10 to 15 dB reductions of transmit cross-talks are observed both in vitro and in vivo. Beam isolation may also be achieved using 3-D dispositions. When aligning the beams along the transducer transverse diagonal, reductions of up to 30 dB of both transmit and receive cross-talks are observed in simulations backed-up by water tank measurements. This allow a potential increase of the frame rate by a factor five without visible image degradation. Using parallel receive beams with STA focusing, the coherent combination of data acquired over successive transmit events allow to recover the spatial resolution and contrast while maintaining higher frame rates. However, the success of this combination is no longer guaranteed in presence of rapid displacements such as observed in the myocardium or the blood. The influence of motion is studied for STA applications combining two or many transmit events: Synthetic Transmit Beamformation, both in 2-D and 3-D, and Coherent Plane Wave Compounding. In presence of significant axial motion, lateral image shifts and deteriorations of the focusing capability are observed, resulting in losses of contrast and SNR. Motion compensation algorithms based on cross-correlation are introduced to correct for the axial motion component. Such algorithms are robust, computationally inexpensive and their necessity is demonstrated through both simulations and in vivo experiments.
12
Kilpatrick, Stephen, Galen Rasche, Chris Cunningham, Myron Moodie, and Ben Abbott. "REORDERING PACKET BASED DATA IN REAL-TIME DATA ACQUISITION SYSTEMS." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604571.
Анотація:
ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, NevadaUbiquitous internet protocol (IP) hardware has reached performance and capability levels that allow its use in data collection and real-time processing applications. Recent development experience with IP-based airborne data acquisition systems has shown that the open, pre-existing IP tools, standards, and capabilities support this form of distribution and sharing of data quite nicely, especially when combined with IP multicast. Unfortunately, the packet based nature of our approach also posed some problems that required special handling to achieve performance requirements. We have developed methods and algorithms for the filtering, selecting, and retiming problems associated with packet-based systems and present our approach in this paper.
13
Swarnkar, Divya. "Experience and analysis of the real time data acquisition system." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 59 p, 2005. http://proquest.umi.com/pqdweb?did=994252331&sid=12&Fmt=2&clientId=8331&RQT=309&VName=PQD.
Анотація:
Thesis (M.S.)--University of Delaware, 2005.Principal faculty advisors: Martin Swany, Dept.. of Computer & Information Sciences; and David Seckel, Dept. of Physics & Astronomy. Includes bibliographical references.
14
Shelley, Larry, and Bob McCauley. "Accommodating Telemetry Data Acquisition Systems." International Foundation for Telemetering, 1987. http://hdl.handle.net/10150/615263.
Анотація:
International Telemetering Conference Proceedings / October 26-29, 1987 / Town and Country Hotel, San Diego, CaliforniaThe Telemetry Systems Operation (TSO) of CSC in Lompoc, California, has been developing telemetry systems since October 1981. Three major turnkey systems have been developed as well as several smaller derivative systems. Each system, built for a different end-user, was custom fit to support unique requirements and often represented several different techniques for accommodating similar problems within different system architectures. This paper describes the evolution of TM system architectures developed by TSO Lompoc, and the special engineering problems solved in the course of their development to provide the user with accommodating telemetry systems that are responsive, expandable, and cost-effective.
15
BenDor, Jonathan, and J. D. Baker. "Processing Real-Time Telemetry with Multiple Embedded Processors." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611671.
Анотація:
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThis paper describes a system in which multiple embedded processors are used for real-time processing of telemetry streams from satellites and radars. Embedded EPC-5 modules are plugged into VME slots in a Loral System 550. Telemetry streams are acquired and decommutated by the System 550, and selected parameters are packetized and appended to a mailbox which resides in VME memory. A Windows-based program continuously fetches packets from the mailbox, processes the data, writes to log files, displays processing results on screen, and sends messages via a modem connected to a serial port.
16
GUIMARAES, FREDERICO SILVA. "A MULTI-AGENT SYSTEM FOR REAL TIME MONITORING AND DATA ACQUISITION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8887@1.
Анотація:
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORSistemas supervisores envolvendo software embarcados são encontrados com freqüência e são responsáveis pela supervisão de equipamentos que vão desde máquinas industriais e eletrodomésticos, a celulares e PDAs. Muitos possuem severos requisitos de confiabilidade e tolerância a falhas, bem como características de sistemas de tempo real. Esta pesquisa investiga o uso de tecnologias de ponta como Design by Contract, Agentes de Software, Mock Objects e Componentes de Software no auxílio ao desenvolvimento de sistemas de monitoramento e aquisição em tempo real. Explora-se, ainda, o conceito de sistemas orientados à recuperação. Para realizar tal análise é utilizado como estudo de caso um sistema de inspeção de dutos, que foi implementado utilizando tais tecnologias. De maneira resumida, pode-se dizer que neste estudo de caso percebeu-se que o uso dessas tecnologias fez com que o sistema fosse desenvolvido em um curto espaço de tempo, sendo que questões relevantes não foram prejudicadas, como por exemplo o fato do sistema ser robusto e tolerante a falhas. É importante ressaltar que o sistema apresentado se encontra em uso em inspeções de dutos reais.
Supervisory systems allied to embedded software, a common subject in the literature, are responsible by the supervision of equipments like industrial machines, household-electric devices, cellular phones and PDAs. Many of them have severe requisites of fault tolerance and reliability as well as real time systems features. This research investigates the use of state-of-the-art technologies such as Design By Contract, Mock Objects, software agents and components in the development of real-time monitoring and data-acquisition systems. Recovery oriented systems concepts are also explored. The case study carried out to the research is a pipeline inspection software system, which uses such technologies. In a nutshell, it can be said that this case study showed strong evidence that the use of these technologies allowed the development in a very short time, without any loss of robustness, fault tolerance and reliability. The developed system is currently being used in real pipeline inspections.
17
DeBenedetto, Louis J. "A Survey of Scalable Real-Time Architectures for Data Acquisition Systems." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/606834.
Анотація:
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, NevadaToday’s large-scale signal processing systems impose massive bandwidth requirements on both internal and external communication systems. Most often, these bandwidth requirements are met by scalable input/output architectures built around high-performance, standards-based technology. Several such technologies are available and are in common use as internal and/or external communication mechanisms. This paper provides an overview of some of the more common scalable technologies used for internal and external communications in real-time data acquisition systems. With respect to internal communications mechanisms this paper focuses on three ANSI-standard switched fabric technologies: RACEway (ANSI/VITA 5-1994), SKYchannel (ANSI/VITA 10-1995) and Myrinet (ANSI/VITA 26-1998). The discussion then turns to how Fibre Channel, HiPPI, and ATM are used to provide scalable external communications in real-time systems. Finally, glimpse of how these technologies are evolving to meet tomorrow’s requirements is provided.
18
Fidell, Sanford, Thomas Fortmann, and Peter Moss. "A Distributed Systems Approach to Real-Time Data Acquisition and Monitoring." International Foundation for Telemetering, 1987. http://hdl.handle.net/10150/615328.
19
Ammendrup, Katrin. "Framework for Wireless Acquisition of Surface EMG and Real-Time Control." Thesis, KTH, Medicinteknik och hälsosystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233311.
Анотація:
Muscle driven devices are controlled or powered with muscle activation. These devices open up the possibility of offering patients with limited muscle function to automatically control assistive devices - for instance exoskeletons - with input from their own muscles. This solution would help a number of patient groups suffering from common conditions, such as spinal cord injuries, stroke and cerebral palsy. To use muscle activation as input it is necessary to have a way to communicate with the mus- cles. Electromyography (EMG) is a technology used to gain information about muscle function and activation. It is performed by measuring and analyzing electrical signals conducted by the muscles during activation. Activation and activation level can be seen from analyzed EMG signal. EMG signals are frequently measured and analyzed afterwards, however, to use it as a controlling an assistive devices, real time analysis is necessary. In this thesis real time acquisi- tion and analysis of EMG was performed. The measured signal was used as an input to control a simple MATLAB computer game. The EMG of a muscle of the forearm, Brachioradialis, was measured with Myon Aktos sys- tem. The measured signal was written to a server as soon as the measurements were acquired. MATLAB was used to connect to the server and performing the signal analysis. The analysis was kept simple in order to limit delay. The result showed that it was possible to acquire real time signal with this method. The delay was negligible, both for the testing and for the game play. Showing that it is possible to play a game with muscle activation supports the idea of a motor that can be controlled automatically with muscle input. Future work should focus on understanding movement intent with respect to EMG and on analyzing multiple signals from different muscles at the same time.
20
Vatavu, Radu-Daniel. "Real-time acquisition of human gestures for interacting with virtual environments." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10007/document.
Анотація:
La thèse traite du problème de la reconnaissance des gestes avec des accents particuliers orientés vers la modélisation des trajectoires de mouvement ainsi que vers l’estimation de la variabilité présente dans l’exécution gestuelle. Les gestes sont acquis dans un scénario typique pour la vision par ordinateur qui approche les particularités des surfaces interactives. On propose un modèle flexible pour les commandes gestuelles à partir d’une représentation par courbes splines et des analogies avec des éléments de la théorie d’élasticité de la physique classique. On utilise les propriétés du modèle pour la reconnaissance des gestes dans un contexte d’apprentissage supervisé. Pour adresser le problème de la variation présente dans l’exécution des gestes, on propose un modèle qui mesure dans une manière quantitative et objective les tendances locales que les utilisateurs sont tentés d'introduire dans leurs exécutions. On utilise ce modèle pour proposer une solution à un problème reconnu comme difficile dans la communauté : la segmentation automatique des trajectoires continues de mouvement et l’identification invariante a l’échelle des commands gestuelles. On démontre aussi l’efficacité du modèle pour effectuer des analyses de type ergonomique pour les dictionnaires de gestesWe address in this thesis the problem of gesture recognition with specific focus on providing a flexible model for movement trajectories as well as for estimating the variation in execution that is inherently present when performing gestures. Gestures are captured in a computer vision scenario which approaches somewhat the specifics of interactive surfaces. We propose a flexible model for gesture commands based on a spline representation which is enhanced with elastic properties in a direct analogy with the theory of elasticity from classical physics. The model is further used for achieving gesture recognition in the context of supervised learning. In order to address the problem of variability in execution, we propose a model that measures objectively and quantitatively the local tendencies that users introduce in their executions. We make use of this model in order to address a problem that is considered hard by the community: automatic segmentation of continuous motion trajectories and scale invariant identification of gesture commands. We equally show the usefulness of our model for performing ergonomic analysis on gesture dictionaries
21
Guo, Fei. "Development of the real-time data acquisition system for Philips Patient Monitor." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1405963966.
22
Bhattacharjee, Nirjhar. "A Real-Time Data Acquisition and Digital Signal Processing System for Neuromonitoring." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1445342703.
23
Constantinides, Nicholas. "Software control for an airborne real-time data acquisition and recording system." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/17650.
Анотація:
Includes bibliographical references.A real-time microprocessor based airborne data acquisition system is described with emphasis on the real-time control software. The system is being currently used by a wide number of airlines in their jetliners for monitoring aircraft performance during flight and recording such data on what is commonly known as the "black box" recorder. The system was primarily developed for use in the new generation of airliners by Boeing Aircraft Company, namely the Boeing 767 and the Boeing 757. At the time of writing this report however, its use has extended to some European aircraft manufacturers, namely Airbus Industries and Fokker. The entire project was a team effort, especially in the design of the hardware. The author's part in this project was the complete design, development and implementation of the real-time control software, including some involvement at a systems level in the hardware design.
24
Correia, Fábio Gonçalves. "Quality control of ultra high resolution seismic data acquisition in real-time." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22007.
Анотація:
Mestrado em Engenharia GeológicaA aquisicção de grandes volumes de dados durante uma campanha sísmica exige, necessariamente, mais tempo para o controlo de qualidade (QC). No entanto, o tempo de QC não pode ser extendido devido a limitações do tempo de operação, tendo de ser feito mais rápido, o que pode comprometer a qualidade. A alternativa, alocar mais pessoas e recursos para QC e melhorar a eficiência, leva a aumentos de custo e à necessidade de maiores embarcações. Além disso, o QC tradicional requer tempo de análise após a aquisição, atrasando a desmobilização da embarcação, aumentando assim os custos da aquisição. A solução proposta passou pelo desenvolvimento de um QC automático em tempo real eficiente, testando a Comparação Espetral e o Atributo Razão Sinal-Ruído - ferramentas desenvolvidas no software SPW, usado para processamento de dados sísmicos. Usando este software foi testada a deteção e identificação de dados de fraca qualidade através das ferramentas de QC automáticas e os seus parâmetros ajustados para incluir pelo menos todos os maus registos encontrados manualmente. Foi também feita a deteção e identificação de vários problemas encontrados durante uma campanha de aquisição, tais como fortes ondulações e respetiva direção, o ruído de esteira provocado pelas hélices da embarcação e consequente Trouser’s Effect e mau funcionamento das fontes ou dos recetores. A deteção antecipada destes problemas pode permitir a sua resolução atempada, não comprometendo a aquisição dos dados. Foram feitos vários relatórios para descrever problemas encontrados durante os testes de versões beta do software SPW e os mesmos reportados à equipa da Parallel Geoscience, que atualizou o software de forma a preencher os requisitos necessários ao bom funcionamento do QC em tempo real. Estas atualizações permitiram o correto mapeamento dos headers dos ficheiros, otimização da velocidade de análise das ferramentas automáticas e correção de erros em processamento dos dados em multi-thread, para evitar atrasos entre o QC em tempo real e a aquisição dos dados, adaptação das ferramentas à leitura de um número variável de assinaturas das fontes, otimização dos limites de memória gráfica e correção de valores anómalos de semelhança espetral. Algumas atualizações foram feitas através da simulação da aquisição de dados na empresa, de forma a efetuar alguns ajustes e posteriormente serem feitos testes numa campanha futura. A parametrização destas ferramentas foi alcançada, assegurando-se assim a correta deteção automática dos vários problemas encontrados durante a campanha de aquisição usada para os testes, o que levará à redução do tempo gasto na fase de QC a bordo e ao aumento da sua eficácia.
The acquisition of larger volumes of seismic data during a survey requires, necessarily, more time for quality control (QC). Despite this, QC cannot be extended due operational time constraints and must be done faster, compromising its efficiency and consequently the data quality. The alternative, to allocate more people and resources for QC to improve efficiency, leads to prohibitive higher costs and larger vessel requirements. Therefore, traditional QC methods for large data require extended standby times after data acquisition, before the vessel can be demobilized, increasing the cost of survey. The solution tested here consisted on the development of an efficient Real- Time QC by testing Spectral Comparison and Signal to Noise Ratio Attribute (tools developed for the SPW seismic processing software). The detection and identification of bad data by the automatic QC tools was made and the parameters adapted to include at least all manual QC flags. Also, the detection and identification of common problems during acquisition, such strong wave motion and its direction, strong propeller’s wash, trouser’s effect and malfunction in sources or receivers were carried out. The premature detection of these problems will allow to solve them soon enough to not compromise the data acquisition. Several problem reports from beta tests of SPW were transmitted to the Parallel Geoscience team, to be used as a reference to update the software and fulfil Real-Time QC requirements. These updates brought the correct mapping of data headers in files, optimization of data analysis speed along with multi-thread processing debug, to assure it will be running fast enough to avoid delays between acquisition and Real-Time QC, software design to read a variable number of source signatures, optimization of graphic memory limits and debugging of anomalous spectral semblance values. Some updates resulted from a data acquisition simulation that was set up in the office, to make some adjustments to be later tested on an upcoming survey. The parameterization of these tools was finally achieved, assuring the correct detection of all major issues found during the survey, what will eventually lead to the reduction of time needed for QC stage on board, as also to the improvement of its efficiency.
25
Marler, Thomas M., Kelly Cooper, and William F. Lake. "A MODULAR RANGE INTERFACE FOR ACQUISITION AND DISTRIBUTION OF TEST RANGE DATA." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/607595.
Анотація:
International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, NevadaA flexible, modular method is needed to connect test range data systems to central real-time computer networks. This is achieved by the development of a real-time, networked, VME-based range interface system. Flexibility is achieved by a modular hardware and software design. The modular hardware consists of standard network interfaces, COTS VME interfaces, and a VME single board computer (with an onboard PCI bus). The modular software is implemented in C++ using the VxWorks real-time operating system. This paper describes the conceptual design and development of the Modular Range Interface (ModRI).
26
Buckley, Dave. "Moving Data Analysis into the Acquisition Hardware." International Foundation for Telemetering, 2014. http://hdl.handle.net/10150/577519.
Анотація:
ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CAData acquisition for flight test is typically handled by dedicated hardware which performs specific functions and targets specific interfaces and buses. Through the use of an FPGA state machine based design approach, performance and robustness can be guaranteed. Up to now sufficient flexibility has been provided by allowing the user to configure the hardware depending on the particular application. However by allowing custom algorithms to be run on the data acquisition hardware, far greater control and flexibility can be offered to the flight test engineer. As the volume of the acquired data increases, this extra control can be used to vastly reduce the amount of data to be recorded or telemetered. Also real-time analysis of test points can now be done where post processing would previously have been required. This paper examines examples of data acquisition, recording and processing and investigates where data reduction and time savings can be achieved by enabling the flight test engineer to run his own algorithms on the hardware.
27
Katopodis, Panagiotis. "A hybrid, large-scale wireless sensor network for real-time acquisition and tracking." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FKatopodis.pdf.
Анотація:
Thesis (M.S. in Electrical Engineering and M.S. in Applied Physics)--Naval Postgraduate School, June 2007.Thesis Advisor(s): Murali Tummala, Gamani Karunasiri. "June 2007." Includes bibliographical references (p. 89-91 ). Also available in print.
28
Forman, Michael L., Tushar K. Hazra, Gregory M. Troendly, and William G. Nickum. "APPLYING PC-BASED EMBEDDED PROCESSING FOR REAL-TIME SATELLITE DATA ACQUISITION AND CONTROL." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608833.
Анотація:
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe performance and cost effectiveness of em bedded processing has greatly enhanced the personal computer's (PC) capability, particularly when used for real-time satellite data acquisition, telemetry processing, command and control operations. Utilizing a transputer based parallel architecture, a modular, reusable, and scalable control system is attainable. The synergism between the personal computer and embedded processing results in efficient, low cost desktop workstations up to 1000 MIPS of performance.
29
Hadi, Muntasir J. "Design of a real-time multi-channel microprocessor based data acquisition and control system." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182787292.
30
Lynch, Thomas J. III, Thomas E. Fortmann, Howard Briscoe, and Sanford Fidell. "MULTIPROCESSOR-BASED DATA ACQUISITION AND ANALYSIS." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614478.
Анотація:
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaMultiprocessing computer systems offer several attractive advantages for telemetry-related data acquisition and processing applications. These include: (1) high-bandwidth, fail-soft operation with convenient, low-cost, growth paths, (2) cost-effective integration and clustering of data acquisition, decommutation, monitoring, archiving, analysis, and display processing, and (3) support for modern telemetry system architectures that allow concurrent network access to test data (for both real-time and post-test analyses) by multiple analysts. This paper asserts that today’s general-purpose hardware and software offer viable platforms for these applications. One such system, currently under development, closely couples VME data buses and other off-the-shelf components, parallel processing computers, and commercial data analysis packages to acquire, process, display, and analyze telemetry and other data from a major weapon system. This approach blurs the formerly clear architectural distinction in telemetry data processing systems between special-purpose, front-end, preprocessing hardware and generalpurpose, back-end, host computers used for further processing and display.
31
Long, Mark A., and Paul H. Zymowski. "A SYNCHRONOUS REAL TIME NETWORK BASED WIRELESS AIRBORNE DATA ACQUISTION SYSTEM." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606473.
Анотація:
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThe purpose of this paper is to present a chronology from a Small Business Innovation Research Program (SBIR) showing the impact of a wireless network architecture on future airborne data acquisition systems. The major advantages and challenges associated with the use of wireless network data acquisition versus wired time division multiplexing systems are rooted in data latency, bandwidth efficient data transmission while maintaining a low bit error rate and not interfering with existing avionics. Many of the issues raised are subtle and complex. It is not the intent of this paper to give these issues the thorough academic and technical analysis they deserve. It is the hope of the authors that this paper will generate awareness and discussion on these issues.
32
Lee, Jungwoo. "REAL-TIME MONITORING OF LANDSLIDE USING WIRELESS SENSOR NETWORK." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245078101.
33
Okoro, Ndubuisi Emmanuel. "Development of a supersonic wind tunnel rapid real-time data acquisition and control system." Master's thesis, Mississippi State : Mississippi State University, 2005. http://sun.library.msstate.edu/ETD-db/ETD-browse/browse.
34
Wargo, William D., and Gill Watt. "From Transducer to Display in a Workstation Environment: A Real Time Data Acquisition System." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614657.
Анотація:
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaThis paper will address the application of an end-to-end programmable PCM telemetry system featuring a modular, programmable data acquisition and encoding system, and a data analysis work station using an IBM PC compatible computer.
35
Deivakkannu, Ganesan. "Data acquisition and data transfer methods for real-time power system optimisation problems solution." Thesis, Cape Peninsula University of Technology, 2014. http://hdl.handle.net/20.500.11838/1178.
Анотація:
Thesis submitted in fulfilment of the requirements for the degree
Master of Technology: Electrical Engineering
in the Faculty of Engineering
at the Cape Peninsula University of Technology
2014The electric power utilities play a vital role in the generation, transmission and distribution of the electrical power to the end users. The power utilities face two major issues, i.e. i) power grids are expected to operate close to the maximum capacity, and ii) there is a need for accurate and better monitoring and control of the power system network using the modern technology and the available tools. These two issues are interconnected as better monitoring allows for better control of the power system. Development of the new standard-based power system technologies contributed to raising the ideas for building of a Smart grid. The challenges are that this process requires development of new control and operation architectures and methods for data acquisition, data transfer, and control computation. These methods require data for the full dynamic state of the power system in real-time, which leads to the introduction of the synchrophasor-based monitoring and control of the power system. The thesis describes the research work and investigations for integration of the existing new power system technologies to build fully automated systems for real-time solution of power system energy management problems, incorporating data measurement and acquisition, data transfer and distribution through a communication network, and data storage and retrieval in one whole system.
36
Dag, Gabriel. "PHM Approaches for Reliability of ECUs : Analyses of Canaries and Real-Time Data Acquisition." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-325974.
Анотація:
Today, Scania CV AB is facing challenging demands on functionality and performance within their vehicles. The electronics are increasing rapidly and to stay competitive on the market, concerns regarding reliability of electronic systems needs to be evaluated. Prognostics and health management (PHM) is a concept where reliability of, for example, electronic control units (ECUs) are assessed. It requires customized systems for each specific environment, due to different strains and stresses. One approach is to have canaries (components with reduced soldering mass) implemented into ECUs as an indication that something is about to happen. Another essential aspect is the continuous real-time data acquisition from sensors, that can be used for different algorithms and models, which could provide forecasts on remaining useful life (RUL) of the ECUs. An appliance is the big data acquisition, where a database will collect data from vehicles, which means that ECU data need be communicated differently than today. This is why this master thesis project investigated canaries on printed circuit boards (PCBs) when they were subjected to vibrations as well as thermal cycling (TC), which are common parameters within vehicles. The PCBs consisted of both lead (Sn-Pb) and lead-free (SAC305) soldering for material comparison, since a transition to lead-free electronics is happening. Several fatigue tests were performed to collect as much information as possible. For further advances towards a PHM implementation, thermal shock (TS) tests on ECUs were performed as well. The ECUs were shocked in a temperature cabinet while being in active state. The internal temperature sensor was communicated with via controller area network (CAN). Scania’s CAN program was used and the data was logged in a computer, which in turn was compared to the data from the surrounding thermocouples, placed in specific spots. The results that were achieved clearly showed that lead-free PCBs are much more sensitive to stresses (both vibrations and TC). It was also shown that canaries failed in a much higher extent than regular resistors. The real-time data acquisition from the ECU could successfully be managed, where continuous data was logged. Also, the TS tests showed how the correlation between sensors indifferent positions was. Finally, the results from these tasks were discussed for future work. One have to keep in mind that this is just the beginning of a many-years project within Scania. The results and progress within this master thesis project will hopefully be a step in the rightdirection.
37
Sandadi, Sandeepa. "In-situ, near real-time acquisition of particle movement in rotating drum coating equipment." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2759.
Анотація:
Thesis (M.S.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains xiii, 137 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 101-103).
38
Portnoy, Michael, and Hsueh-Szu Yang. "NETWORK DATA ACQUISITION AND PLAYBACK OF MULTIMEDIA DATA." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604246.
Анотація:
ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, CaliforniaTraditional data acquisition systems have relied on physical connections between data sources and data receivers to handle the routing of acquired data streams. However, these systems grow exponentially in complexity as the number of data sources and receivers increases. New techniques are needed to address the ever increasing complexity of data acquisition. Furthermore, more advanced mechanisms are needed that move past the limitations of traditional data models that connect each data source to exactly one data receiver. This paper presents a software framework for the playback of multiplexed data acquired from a network acquisition system. This framework uses multicast technologies to connect data sources with multiple data receivers. The network acquisition system is briefly introduced before the software framework is discussed. Both the challenges and advantages involved with creating such a system are presented. Finally, this framework is applied to an aviation telemetry example.
39
Jian-zhong, Qi, Gong Yan, and Song Peng. "Realization of Fast Acquisition for Spread Spectrum Signal Based on FFT." International Foundation for Telemetering, 2011. http://hdl.handle.net/10150/595763.
Анотація:
ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, NevadaAcquisition based on Fast Fourier Transform (FFT) can acquire Pseudo-random code phase quickly and improve the performance of the satellite navigation receivers. In the paper Real-time receiver adopts the FPGA to realize the function of FFT and uses DSP processor to control the implementation process of Acquisition. For increasing the sensitivity of Acquisition incoherent accumulation were used in the process. Also, in the paper we have discussed the process method for decreasing the negative influence of signal power changes and carrier's Doppler frequency.
40
Eccles, Lee, Michael O’Brien, and William Anderson. "DATA ACQUISITION SYSTEM FOR AIRCRAFT QUALIFICATION." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615566.
Анотація:
International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, NevadaThe Boeing Commercial Airplane Company presently uses an Airborne Data Analysis and Monitor System (ADAMS) to support extensive qualification testing on new and modified commercial aircraft. The ADAMS system consists of subsystems controlled by independent processors which preprocess serial PCM data, perform application-specific processing, provide graphic display of data, and manage mass storage resources. Setup and control information is passed between processors using the Ethernet protocol on a fiber optic network. Tagged data is passed between processors using a data bus with networking characteristics. During qualification tests, data are dynamically selected, analyses performed, and results recorded. Decisions to proceed or repeat tests are made in real time on the aircraft. Instrumentation in present aircraft includes up to 3700 sensors, with projections for 5750 sensors in the next generation. Concurrently, data throughput rates are increasing, and data preprocessing requirements are becoming more complex. Fairchild Weston Systems, Inc., under contract to Boeing, has developed an Acquisition Interface Assembly (AIA) which accepts multiple streams of PCM data, controls recording and playback on analog tape, performs high speed data preprocessing, and distributes the data to the other ADAMS subsystems. The AIA processes one to three streams in any of the standard IRIG PCM formats using programmable bit, frame and subframe synchronizers. Data from ARINC buses with embedded measurement labels, bus ID’s, and time tags may also be processed by the AIA. Preprocessing is accomplished by two high-performance Distributed Processing Units (DPU) operating in either pipeline or parallel environments. The DPU’s perform concatenation functions, number system conversions, engineering unit conversions, and data tagging for distribution to the ADAMS system. Time information, from either a time code generator or tape playback, may be merged with data with a 0.1 msec resolution. Control and status functions are coordinated by an embedded processor, and are accessible to other ADAMS processors via both the Ethernet interface and a local operator’s terminal. Because the AIA assembly is used in aircraft, the entire functional capability has been packaged in a 14-inch high, rack-mountable chassis with EMI shielding. The unit has been designed for high temperature, high altitude, vibrating environments. The AIA will be a key element in aircraft qualification testing at Boeing well into the next generation of airframes, and specification, design, development, and implementation of the AIA has been carried out with the significance of that fact in mind.
41
Marler, Thomas M. "THE MODULAR RANGE INTERFACE (MODRI) DATA ACQUISITION CAPABILITIES AND STRATEGIES." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605308.
Анотація:
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThe Modular Range Interface (ModRI) is a reliable networked data acquisition system used to acquire and disseminate dissimilar data. ModRI’s purpose is to connect TSPI systems to a central computer network. The modular hardware design consists of an SBC, COTS network interfaces, and other COTS interfaces in a VME form factor. The modular software design uses C++ and OO patterns running under an RTOS. Current capabilities of ModRI include acquisition of Ethernet, PCM data, RS-422/232 serial data, and IRIG-B time. Future strategies might include stand-alone data acquisition, acquisition of digital video, and migration to other architectures and operating systems.
42
Paterson, James Alexander. "Acquisition of geometry and reflectance of objects, including the human face, for real-time systems." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.534211.
43
Kirkpatrick, Charles R., and Keith A. Banks. "Uplink/Downlink Real-Time Casualty Assessment Data Acquisition System for U. S. Army Aviation Applications." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608830.
Анотація:
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe On-board Data Interface Module (ODIM) was developed specifically to provide real-time casualty assessment telemetry data for the training environment on the instrumented range system at the U. S. Army National Training Center (NTC) located at Ft. Irwin, California. Real-time data acquisition and telemetry systems, such as the ODIM, which enhance the feed back capabilities of fielded training systems are becoming increasingly important to the Department of Defense in these times of shrinking defense budgets and decreasing global stability. The ODIM is designed to combine, process and transmit data from the AH-64 (Apache) 1553 data bus, the Aircraft Survivability Equipment (ASE) threat warnings, the on-board training system laser belt, cockpit kill indicators, and status data. The ODIM also downlinks the stored data though the Micro-B transceiver on the AH-64A. For the application at the NTC, the ODIM looks for very specific data from the AH-64 and the MILES/AGES II system. However, the ODIM is programmable to collect any of the data available from these systems. The uplink/ downlink available through the Micro-B transceiver allows the user access to the ODIM's features even from a remote location.
44
Donlan, Brian, and Frank Sabo. "Acquisition and Near Real-Time Display of Multispectral Test Data from Widely Separated Test Sites." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611728.
Анотація:
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaAs modern weapons grow more sophisticated and capable of operating autonomously, the challenge of testing these weapons has also grown more complex. Seekers may be multispectral and must be able to overcome threat countermeasures. To effectively analyze the performance of these weapons, time-correlated test data must be efficiently, simultaneously acquired from both the weapons' internal busses and from the threat countermeasures' internal communication busses, often in a "live fire" environment. The test data must be transmitted to a central processing station where test personnel may immediately analyze the performance of the weapon with the assistance of scientific visualization techniques. In addition, the data must be captured on permanent media for future playback and more detailed analysis. One solution is to link the test article, threat countermeasures and other test support resources through an Integrated Telemetry System (ITS). Instrumentation to acquire high-speed test data is installed in data collection vans that are remotely located in the vicinity of the article under test or in the vicinity of the threat countermeasures systems or test support resources. The remote vans will be interconnected and linked to a control van which provides a centralized test control and monitoring point. Remote Data Formatter (RDF) instrumentation units, located in the remote vans, can acquire data from and control seekers, sensors, emission sources or other equipment located in or near the remote vans. The RDF units can also format the data for transmission to the control van via either fiber optic or microwave radio links. The data transmitted from multiple remote vans is received by Real-time Data Processing System (RTPS) units located in the control van for merging, processing and recording. Some of the processed data can be transferred to a Host Processing System (HPS) where it can be displayed on color graphic workstations. The control van's HPS workstations provide user-friendly displays and menus for test setup and control. Both the remote and control vans are equipped with secure digital communication systems capable of supporting compressed digital video, audio, high-speed instrumentation data and an Ethernet computer network.
45
Saliaris, Ioannis R. "Real-Time data acquisition and processing of the Magnetic, Angular Rate and Gravity (MARG) sensor /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FSaliaris.pdf.
Анотація:
Thesis (M.S. in Electrical Engineering and M.S. in Systems Engineering)--Naval Postgraduate School, June 2004.Thesis advisor(s): Xiaoping Yun. Includes bibliographical references (p. 59-60). Also available online.
46
Riemenschneider, Bruno [Verfasser], and Jürgen [Akademischer Betreuer] Hennig. "Highly accelerated fMRI using non-cartesian trajectories: enhanced data acquisition and enabling real-time reconstruction." Freiburg : Universität, 2019. http://d-nb.info/120482617X/34.
47
McGrew, Timothy M. "Army aviation addressing battlefield anomalies in real time with the teaming and collaboration of manned and unmanned aircraft." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FMcGrew.pdf.
Анотація:
Thesis (M.S. in Defense Analysis)--Naval Postgraduate School, December 2009.Thesis Advisor: Bordetsky, Alex. Second Reader: Greenshields, Brian. "December 2009." Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: Teaming and collaboration of manned and unmanned aircraft. Includes bibliographical references (p. 59-61). Also available in print.
48
Harris, Jim, and Bob Downing. "WINGS CONCEPT: PRESENT AND FUTURE." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605344.
Анотація:
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe Western Aeronautical Test Range (WATR) of NASA’s Dryden Flight Research Center (DFRC) is facing a challenge in meeting the technology demands of future flight mission projects. Rapid growth in technology for aircraft has resulted in complexity often surpassing the capabilities of the current WATR real-time processing and display systems. These current legacy systems are based on an architecture that is over a decade old. In response, the WATR has initiated the development of the WATR Integrated Next Generation System (WINGS). The purpose of WINGS is to provide the capability to acquire data from a variety of sources and process that data for subsequent analysis and display to Project Users in the WATR Mission Control Centers (MCCs) in real-time, near real-time and subsequent post-mission analysis. WINGS system architecture will bridge the continuing gap between new research flight test requirements and capability by distributing current system architectures to provide incremental and iterative system upgrades.
49
Karri, Janardhan Bhima Reddy. "Low Power Real-time Video and Audio Embedded System Design for Naturalistic Bicycle Study." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5518.
Анотація:
According to NHTSA Traffic Safety Facts [9], bicyclist deaths and injuries in 2013 are recorded as 732 and 48,000, respectively. In the State of Florida the safety of bicyclists is of particular concern as the bicycle fatality rates are nearly triple the national average. Further Florida ranks #1 on bicycle fatality rate in the nation for several years. To determine the cause of near-misses and crashes, a detailed study of bicyclist behavior and environmental conditions is needed. In a Florida Department of Transport (FDOT) funded project, USF CUTR has proposed naturalistic bicycle study based on ride data collected from 100 bicyclists for 3000 hrs. To this end, Bicycle Data Acquisition System (BDAS) is being researched and developed. The main objective of this thesis work is to design and implement low power video and audio subsystems of BDAS as specified by domain experts (USF CUTR researchers). This work also involves design of graphical user interface (Windows application) to visualize the data in a synchronized manner. Selection of appropriate hardware to capture and store data is critical as it should meet several criteria like low power consumption, low cost, and small form factor. Several Camera controllers were evaluated in terms of their performance and cost. The major challenges in this design are synchronization between collected data, storage of the video and sensor data, and design of low power embedded subsystems.
50
Perret, Grégoire. "Real-time assay of DNA damage by therapeutic radiation beams with silicon nano tweezers and microfluidic setup." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10211/document.
Анотація:
Dans les premières années de la radiothérapie, les mécanismes d’action et les effets secondaires des radiations ionisantes n’étaient que faiblement compris. La génétique moléculaire a clairement montré les dommages causés par ses radiations sur l’ADN des cellules. Cependant, le rayonnement ne distinguant pas les cellules saines des cellules tumorales, les plus grandes avancées modernes en radiothérapie sont concentrées sur l'amélioration de la précision de la dose délivrée. Avec un intérêt relativement bas pour la compréhension fondamentale des mécanismes de base des dégâts biologiques induits par irradiation.Dans le 1er chapitre de cette thèse, l’état de l’art conduit à considérer le Silicon Nano Tweezers (SNT) comme un excellent candidat pour l’exploration des champs méconnus de la radiothérapie. Le 2nd chapitre présente le SNT et sa capacité à caractériser en temps réel les propriétés biomécaniques de l’ADN. Le 3ème chapitre montre le dispositif entourant le SNT et évalue sa capacité à mesurer les caractéristiques d’un faisceau d’ADN en milieu liquide subissant le rude champ électromagnétique généré par la machine de radiothérapie : le Cyberknife. Le 4ème chapitre explique le protocole spécialement développé pour la caractérisation par le SNT de l’ADN en milieu liquide. Le 5ème chapitre présente les résultats clés, obtenus dans diverses conditions, de caractérisations mécaniques en temps réel de faisceau d’ADN irradiés par le Cyberknife. La dernière partie conclue finalement sur les possibilités et les perspectives offertes par la technologie des Microsystèmes électromécaniques dans l’avancée de la recherche en radiothérapie et en plus largement en médecineIn the early days of radiotherapy, very little was known about the mechanism of action of ionizing radiation and its side effects. The understanding of molecular genetics has made it clear that radiation damages mainly the DNA of cells. However, since radiation does not distinguish between healthy and tumor cells, the largest improvement of the radiotherapy technology in modern days has concentrated on improving the precision of dose-deliver, with a comparatively lower interest in the fundamental understanding of the basic mechanisms of biological radiation damage.In the first chapter of this thesis, the state of the art conducts to consider the Silicon Nano Tweezers (SNT) as an excellent candidate to explore unknown field of the radiotherapy treatment. The second chapter introduces the SNT and explains its ability to conduct real-time biomechanical characterization of a DNA bundle. The third chapter shows the surrounding SNT setup, and evaluates its capability to measure the biomechanical characteristic of a DNA bundle in liquid under the harsh electromagnetic environment generated by a radiotherapy machine: the Cyberknife. The fourth chapter explains the protocol developed for the DNA characterization in liquid by the SNT. The fifth chapter presents some key results of real-time mechanical characterization of DNA bundles under the Cyberknife irradiation in several conditions, followed by a discussion based on the theoretical model of a randomly damaged DNA bundle. The last part finally concludes on the capability and perspective offered by Micro-electromechanical technologies to push the research in radiotherapy and in medicine