<p>An interest has been established in the identification, documentation and classifi- cation of the environmental assumptions that are missing from the original PACE- MAKER System Specification. This thesis addresses the presented challenge and documents the procedure used to identify, classify, and document these missing en- vironmental assumptions.</p> <p>In summary, this thesis answers the following questions: <ol> <li></p> <p>What can be done in order to improve the original PACEMAKER System</p> <p>Specification with respect to environmental assumptions? </li> <li></p> <p>Why is it beneficial, in terms of enhancing software quality, to include the doc- umentation of environmental assumptions – which sometimes are (wrongfully) perceived as being collateral and optional – as part of the software requirements document? </li> <li></p> <p>How should such environmental assumptions be documented? </li> </ol></p> <p>More specifically, this thesis • Presents an abstract model for the PACEMAKER system. • Identifies system boundaries and interfaces in the PACEMAKER model. • Identifies environmental assumptions for the PACEMAKER system.</p> <p>• Presents a classification system for the environmental assumptions identified for the PACEMAKER system based on the proposed model.</p> <p>• Proposes a process for identifying environmental assumptions.</p> <p>Furthermore, the research findings presented in this thesis are not limited to the PACEMAKER system. The documentation convention proposed in this thesis is meant to be generalized and can be extended to address similar documentation needs posed by all kinds of software systems. Additionally, the process of environmental assumptions elicitation described in this thesis provides a useful reference for con- ducting similar assumption identification projects. Lastly, the classification system presented in this thesis for the environmental assumptions exhibits one facet of a grander conceptual system – one that incorporates multiple ‘views’ of the same set of assumptions, with each view being distinguished by a unique set of classification criteria.</p> / Master of Applied Science (MASc)

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / The Common Airborne Instrumentation System (CAIS) was developed under the auspices of the Department of Defense to promote standardization, commonality, and interoperability among flight test instrumentation. The central characteristic of CAIS is a common suite of equipment used across service boundaries and in many airframe and weapon systems. The CAIS system has many advanced capabilities which must be tested during ground support and system test. There is a need for a common set of low cost, highly capable ground support hardware and software tools to facilitate these tasks. The ground support system should combine commonly available PC-based telemetry tools with unique devices needed for CAIS applications (such as CAIS Bus Emulator, CAIS Hardware Simulator, etc.). An integrated software suite is imperative to support this equipment. A CAIS Ground Support Unit (GSU) has been developed to promote these CAIS goals. This paper presents the capabilities and features of a PC-based CAIS GSU, emphasizing those features that are unique to CAIS. Hardware tools developed to provide CAIS Bus Emulation and CAIS Hardware Simulation are also described.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The US Government originally funded the development of the Common Airborne Instrumentation System (CAIS) to address industry-wide compatibility, maintenance, and commonality issues. Although initially targeted for US Department of Defense (DoD) programs, CAIS is also being used throughout the world in many commercial applications. This paper provides a fresh look at the evolution of the CAIS concept starting with some historical background of the CAIS Program, an overview of the CAIS System Architecture and recent trends in the use of “Commercial Off The Shelf (COTS)” products and technology.

Vibratory driven sheet piles are a cost-effective retaining wall structure, and in coming decades the continued use of this method will be crucial for minimising costs within the construction sector. However, vibratory driven sheet piles are a source of ground vibrations, which may harm structures or induce disturbance. Most urban construction projects face strict limits on permissible vibration level. Being able to reliably predict the expected vibration level prior to construction is therefore highly important. Reliable prediction demands a profound knowledge of the vibration transfer process, from source to point of interest. This thesis focuses on clarifying the vibration transfer process and will serve as a platform for the future development of a reliable prediction model. The vibration transfer process is divided into two main parts: vibration source and vibrations in soil. The different parts in the vibration transfer process are studied and investigated with the help of a literature review, field tests and numerical modelling. Within the scope of this thesis, three field tests have been conducted and a new instrumentation system has been developed. The new instrumentation system enables recording of both sheet pile vibrations and ground vibrations at depth during the entire driving. The field tests aimed to study the vibration transfer from sheet pile to soil and the vibration transfer within a sheet pile wall, as well as the wave pattern in soil. To study sheet pile behaviour during driving a numerical model was developed, which is also meant to serve as a basis for further studies. The main scientific contribution of this thesis is the identification of the sheet pile behaviour during driving. For practical application, the main contribution is the development of an increased knowledge of the vibration transfer process from source to soil, together with the new instrumentation system and the development of the numerical model. / Vibrodriven spont är en kostnadseffektiv stödkonstruktion och i framtiden kommer den fortsatta användningen av denna metod att vara nödvändig för att minimera kostnader för byggprojekt. Vibrodriven spont är dock en källa till markvibrationer, som kan skada byggnader eller orsaka störningar. De flesta byggprojekt måste förhålla sig till strikta krav gällande vibrationsnivåer. Möjligheten att på ett tillförlitligt sätt förutsäga vibrationsnivåerna innan bygget startar är därför av största vikt. Tillförlitlig prognos av vibrationsnivåer i samband med vibrodrivning av spont kräver god kännedom om vibrationsöverföringsprocessen, från källan till det potentiella skadeobjektet. Denna avhandling fokuserar på att förtydliga vibrationsöverföringsprocessen och fungera som en plattform för framtida utveckling av en tillförlitlig prognosmodell. Vibrationsöverföringsprocessen delas in i två huvuddelar; vibrationskällan och vibrationer i jord. De olika delarna av vibrationsöverföringsprocessen studeras och undersöks med hjälp av litteraturstudie, fältförsök och numerisk modellering. Inom ramarna för denna avhandling har tre fältförsök utförts och ett nytt instrumenteringssystem har utvecklats. Det nya instrumenteringssystemet möjliggör mätning av både spontvibrationer och vibrationer på djup i jorden, under hela neddrivningsfasen. Fältförsöken syftade till att studera vibrationsöverföringen mellan spont och jord, vibrationsöverföringen inom en spontvägg samt vågmönstret i jorden under drivning. För att studera spontens beteende under neddrivning utvecklades en numerisk modell, som också kan fungera som en bas för framtida studier. Avhandlingens huvudsakliga vetenskapliga bidrag är identifieringen av spontens beteende under neddrivning. För praktisk tillämpning är det huvudsakliga bidraget förklaringen av vibrationsöverföringsprocessen från källa till jord, det nya instrumenteringssystemet samt utvecklingen av den numeriska modellen.

Depuis la révolution industrielle les niveaux des concentrations atmosphériques des gaz à effet de serre ne cessent d’augmenter provocant ainsi une accélération du réchauffement climatique. Les composés organiques volatils (COVs) contribuent non seulement à cet effet de serre mais aussi à la pollution environnementale qui a un impact négatif sur toutes les espèces vivantes de la planète. Par exemple, au cours de l’année 2012, la pollution de l'air a été à l’origine 7 millions de décès, selon l'Organisation mondiale de la santé (OMS) [1]. Très récemment, une étude médicale de la commission Lancet sur la pollution et la santé a révélé qu'en 2015 un décès sur six était lié à la pollution de l'air et de l'eau, 6,5 millions de décès dans le monde chaque année sont liés à la pollution de l'air intérieur et extérieur [2]. En effet, les COVs, très volatils et utilisés comme solvants par exemple, peuvent être indirectement à l’origine de toux, d’inconfort thoracique, de gêne douloureuse, d’essoufflement respiratoire, d’irritation nasale ou oculaire ou encore de la gorge. Ils peuvent aussi être directement toxiques ou explosifs ou encore perturbateurs de la réponse immunitaire. De plus certains d’entre eux sont classés CMR (cancérogène, mutagène et reprotoxique). Dans ces conditions une meilleure connaissance des effets liés à l’exposition aux COVs sur la santé et l’environnement est vraiment nécessaire. Cette connaissance passe également par la détection et la quantification des concentrations de COVs afin de proposer un meilleur aménagement des environnements et d'alerter les individus concernés en temps réel sur les dangers encourus. La plupart des plateformes déjà existantes ou commercialisées sont soient trop coûteuses, soient très consommatrices d'énergie, soient fonctionnelles à des températures élevées, soient instables pour la détection en temps réel ou à long terme ce qui limite la prolifération des sites de mesures. Ainsi, cette thèse s’inscrit dans le domaine des capteurs de gaz dédiés pour la détection de la pollution dans l’air. Elle porte sur le développement d’une plateforme de détection, de suivi et de quantification des composés organiques volatils (COVs) en temps réel, utilisant un capteur de gaz différentiel flexible et imprimé basé sur des transducteurs micro-ondes et des matériaux carbonés polymères composites comme couches sensibles. Le dispositif proposé vise à fournir des informations directement exploitables pour constituer à terme une plateforme de faible coût embarquée, dédiée à l’internet des objets pour faciliter la prolifération des sites de détection et de contrôle en réalisant des réseaux de capteurs communicants sans fil fonctionnant en environnements variés. / Since the Industrial Revolution, the levels of atmospheric concentrations of greenhouse gases have been increasing, causing an acceleration of global warming. Volatile organic compounds (VOCs) contribute not only to this greenhouse effect, but also to environmental pollution, which has a negative impact on all living species on the planet. For example, in the year 2012, air pollution caused 7 million deaths, according to the World Health Organization (WHO) [1]. In addition, a very recent medical study by the Lancet Commission on Pollution and Health found that one in six deaths in 2015 was related to air and water pollution [2]. Also, indoor and outdoor air pollution is linked to 6.5 million deaths worldwide each year. VOCs can indirectly cause cough, chest discomfort, painful discomfort, shortness of breath, as well as nasal, ocular or throat irritation. They can also be directly toxic or explosive or disruptive of the immune response. In addition, some of them are classified as CMR (carcinogenic, mutagenic and reprotoxic). They are very volatile and often used as solvents for example. In these conditions, a better understanding of the health and environmental effects of exposure to VOCs is necessary. Such knowledge also involves the detection and quantification of VOC concentrations in order to propose a better management of the environments and to alert people in real time of the dangers incurred. Most of the existing or commercially available platforms are either too expensive, energy intensive, high temperature functional, unstable for real-time or long-term detection, which limits the proliferation of measurement sites. This thesis is in the field of dedicated gas sensors for the detection of pollution in the air. It deals with the development of a platform for the detection, monitoring and quantification of volatile organic compounds (VOCs) in real time, using a flexible and printed differential gas sensor based on microwave transducers and composite polymeric carbon materials as sensitive layers. The proposed device aims at providing directly exploitable information such as a low-cost embedded platform dedicated to the Internet of things and which offers increasing possibilities for the proliferation of detection and control sites by realizing networks of wireless communicating sensors operating in various environments.

Made available in DSpace on 2016-12-12T20:27:37Z (GMT). No. of bitstreams: 1 Yujuan Wang.pdf: 1608760 bytes, checksum: 9cb82304a2c95c2b0e357dc7f8449815 (MD5) Previous issue date: 2012-12-17 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This work presents the development of an FPGA-based optical interrogation system of multiplexed FBG sensors. The Fabry-Perot filter is used to implement the tunable filter method, as a demodulator for FBG sensors. The tuning signal generation for Fabry-Perot filter and the data aquisition are implemented and syncronized em FPGA. Peak-detection algorithms, based on centroid and FIR filter, are implemented em FPGA. The peak displacement detected of FBG reflected spectrum is used to refer sensed elements, such as variation of temperature and refractive index. Besides, other auxiliary digital circuits are implemented for the system configuration, visulization of the detected peak information and the serial communication to monitor entire spectra in computer. All these digital circuits are working on their own duty at the same time, synchronised by the crystal clock of FPGA. The system was used to monitor the fabrication process of an refractive index sensor. The fabricated sensor was tested by measuring the refractive index of water and sucrose. In another experiment, the system was tested by measuring the temperature of a water sample. In addition, a method to calibrate the tuning signal generator is proposed, which can also be employed in other applications that uses DA converters. Finally, the developed system was packaged to facilitate its transportation. / Este trabalho descreve a implementação de um sistema de interrogação óptico para FBGs multiplexadas, com o controle dos processos implementado em FPGA. A interrogação das FBGs é realizada por meio do método de filtro sintonizável, com o uso de filtro Fabry-Perot. Um FPGA é utilizado para gerar sinal de sintonia para o filtro Fabry-Perot e realizar a leitura do sinal espectral refletido pelas FBGs. Algoritmos de detecção de pico (centroide e filtro FIR) foram implementados no FPGA para processar os sinais refletidos por cada FBG, com o objetivo de inferir as propriedades sensoreadas, como variação de temperatura ou índice de refração. Além destes circuitos digitais, são implementados outros circuitos digitais para a configuração do sistema, para a visualização do pico detectado do sinal espectral e para o monitoramento do espectro inteiro via comunicação serial. Todos circuitos cumprem a própria função paralelamente em virtude do paralelismo do FPGA, sincronizado pelo clock do oscilador cristal do FPGA. O sistema desenvolvido foi utilizado no monitoramento do processo de fabricação de sensor de índice de refração e então na leitura do índice de refração de amostras de sacarose e água. O sistema também foi utilizado para a leitura da temperatura de amostras de água, onde foi estimada a sensibilidade e a resolução do sistema. Também foi proposto um método para a calibração do sistema, que pode ser utilizado também em outros trabalhos. O sistema final foi colocado em uma maleta para facilitar o seu transporte para o local de uso.

Made available in DSpace on 2014-12-17T14:56:21Z (GMT). No. of bitstreams: 1 CarloFPSC.pdf: 941846 bytes, checksum: 5fe2e2c9851039018a0653de693d001c (MD5) Previous issue date: 2006-11-27 / Wireless sensor networks are reality nowadays. The growing necessity of connectivity between existing industrial plant equipments pushes the research and development of several technologies. The IEEE 802.15.4 LR-WPAN comes as a low-cost and powersaving viable solution, which are important concerns while making decisions on remote sensoring projects. This study intends to propose a wireless communication system which makes possible the monitoring of analogic and/or digital variables (i. e., the pressure studied) involved on the artificial methods for oil and gas lifting. The main issues are: To develop a software based on SMAC Standard in order to create a wireless network to monitoring analogic and/or digital variables; To evaluate the communication link based on the number of lost packets tested in different environments (indoor and outdoor) and To propose an instrumentation system consisting of wireless devices / As redes de sensores sem fio (RSSS) j? s?o uma realidade hoje em dia, pois a grande necessidade de conectividade entre os equipamentos existentes numa planta industrial impulsiona a pesquisa e o desenvolvimento de diversas tecnologias. O padr?o LR-WPAN IEE 802.15.4 apresenta-se como uma solu??o vi?vel, com baixo custo e baixo consumo de energia, requisitos importantes para a implanta??o de um sistema de sensoriamento remoto. A contribui??o deste trabalho consiste em propor um sistema de comunica??o sem fio, que possa monitorar vari?veis anal?gicas e/ou digitais (no caso do estudo em quest?o, a press?o) nos m?todos de eleva??o artificial de petr?leo e g?s natural. Os pontos principais deste estudo s?o: Desenvolver um software baseado no Padr?o SMAC com intuito de criar uma rede sem fio com fins de monitoramento de vari?veis anal?gicas e/ou digitais; Avaliar o enlace de comunica??o com rela??o a quantidade de pacotes perdidos em diferentes ambientes (ambientes internos (Indoor) e externos (Outdoor)) e, Propor um sistema de instrumenta??o utilizando tecnologia sem fio