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El presente trabajo de título consistió en la elaboración de un osciloscopio digital de propósito general, sencillo de implementar y de bajo costo. El sistema está dividido en tres fases principales: la etapa de adquisición y acondicionamiento de la señal, transporte de la información por USB y transmisión de dicha información dentro de una red LAN utilizando microcontroladores PIC. En cuanto al acondicionamiento de la señal, se diseñó en base a lo visto en la revisión bibliográfica una atenuación inicial y posterior amplificación variable mediante amplificadores operacionales de ganancia variable, controlada digitalmente mediante la multiplexión de un arreglo de resistencias que definen la ganancia. La idea fundamental fue acondicionar señales de distinta amplitud al rango dinámico del conversor análogodigital utilizado (0 – 5 volts). Una vez convertido el dato mediante interrupciones que garantizan la separación constante de tiempo entre muestras, se guarda dentro de la RAM interna del PIC y mediante transacciones PC-Microcontrolador PIC18F2550 se envían paquetes de datos por USB, los cuales son procesados y posteriormente graficados. Paralelo a esto, se trasfieren los datos captados a un segundo PIC (18F452), el cual define una conexión TCP/IP mediante el controlador Ethernet ENC28J60 y envía paquetes con la información recibida dentro de una LAN. Independiente al método de adquisición utilizado (USB o Ethernet), se diseñó un software basado en capas o módulos, el cual recibe la información, y la guarda en una cadena, y dependiendo si está o no definida la opción de trigger, localiza el punto de disparo y lo centra en pantalla, lo cual da la posibilidad de implementar también un control de desplazamiento vertical.

Semestral thesis is devoted to mapping and verification technologies for the project active loudspeaker crossover using DSP. Three way systém will use open baffle. Design of analog crossover is complex due to the need of compensating for acoustic short circuit and properties of laudspeakers.

This project solves teoretical design of digital reproductor system and controlling GUI software. This digital system is composed of one master unit, which digitalize different audio sources and stream them by ethernet to slave units. The controlling software is be able to set and monitor the audio system.

The first chapter of the master´s thesis deals with the analysis of problems indesigning of devices, which include individual steps of the designing of the device and the choice of the most suitable option. It deals with the analysis of the proposed assignment and requirements for this device, analysis of battery management chip that the device should be able to communicate with, analysis of the I2C/SMBus communication protocol which is used for communication between the device with the battery management chips and possibilities of communication of the device with computer. The second chapter deals with the communications via USB bus and the description of this communication. The next step is dedicated to the selection of a programmable microprocessor Atmel AT90USB1287, describes his pin configuration, the possibilities, describes the way of USB interface connection, the method of the I2C/SMBus interface connection and its protection. In the last part of the this chapter the thesis describes Atmel microcontroller programming, specifically describes how to program I2C/SMBus communication, USB communication and how to write a program to the microprocessor. The third chapter of the thesis deals with the design of a single device, and components like a scheme of the connection and the concept of functional realization of the communication with device. The fourth chapter deals with the development of the device itself. Describes the parts of final involvement and describes the parts of the final program for microprocessor, such as communication with SMBus device and communication through the USB bus. The fifth chapter is devoted to the development of communication applications in Java. This section describes the different elements of applications such as communication with USB devices, data storage and open for viewing. The last chapter presents the final device and the final communication application.

This master thesis deals with development and construction of ultrasound diagnostical system with USB interface. The main task is to study current usage of A mode ultrasound systems and methods of their construction. Following with own design of A mode ultrasound system with usage of assigned Olympus ultrasound transducer.

The Edward Snowden data breach of 2013 clearly illustrates the damage that insiders can do to an organization. An insider's knowledge of an organization allows them legitimate access to the systems where valuable information is stored. Because they belong within an organizations security perimeter, an insider is inherently difficult to detect and prevent information leakage. To counter this, proactive measures must be deployed to limit the ability of an insider to steal information. Email monitoring at the edge is can easily be monitored for large file exaltation. However, USB drives are ideally suited for large-scale file extraction in a covert manner. This work discusses a process for disabling write-access to USB drives while allowing read-access. Allowing read-access for USB drives allows an organization to adapt to the changing security posture of the organization. People can still bring USB devices into the organization and read data from them, but exfiltration is more difficult.

One of the most promising powered-lift concepts is Upper Surface Blowing (USB), where the engines are placed above the wing and the engine exhaust jet becomes attached to the upper surface. The jet thrust can then be vectored by use of the trailing edge curvature since the jet flow tends to remain attached by the "Coanda Effect". Wind tunnel and flight-testing have shown USB aircraft to be capable of producing maximum lift coefficients near 10. They have the additional benefit of shielding the engine noise above the wing and away from the ground. Given the potential gains from USB aircraft, one would expect that conceptual design methods exist for their development. This is not the case however. While relatively complex solutions are available, there is currently no adequate low-fidelity methodology for the conceptual and preliminary design of USB or USB/distributed propulsion aircraft. The focus of the current work is to provide such a methodology for conceptual design of USB aircraft. Based on limited experimental data, the new methodology is shown to compare well with wind tunnel data. In this thesis we have described the new approach, correlated it with available 2-D data, and presented comparisons of our predictions with published USB data and an existing non-linear vortex lattice method. The current approach has been shown to produce good results over a broad range of propulsion system parameters, wing geometries, and flap deflections. In addition, the semi-analytical nature of the methodology will lend itself well to aircraft design programs/optimizers such as ACSYNT. These factors make the current method a useful tool for the design of USB and USB/distributed propulsion aircraft. / Master of Science

<p>Alstom Power i Växjö arbetar med utveckling och försäljning av bland annat elektrofilter till</p><p>rökgasreningssystem vid olika typer av miljövårdsanläggningar för t.ex. kraftverksindustrin.</p><p>Dessa elektrofilter kontrolleras och regleras med hjälp av styrutrustning uppbyggd av ett</p><p>antal styrenheter som idag kommunicerar via en egentillverkad standard kallad ”Fläktbuss”. För</p><p>att övervaka detta system vill man använda handburna PDA och kommunicera med Fläktbussen</p><p>via USB. För att få kommunikationen mellan USB och Fläktbuss att fungera krävs någon form av</p><p>aktiv konvertering.</p><p>Detta examensarbete kommer att ta upp så väl problematik och lösningar kring det</p><p>problem som finns i samband med denna konvertering.</p> / <p>Alstom Power in Växjö develop and sell equipment like electro filters for enviromental purposes</p><p>for the power industry.</p><p>Those filters are controlled and regulated by controlunits, communicating via an Alstoms</p><p>own standrad called “Fläktbuss”. To supervise and maintain this system, a solution of PDA and</p><p>USB communication is intresting. To make this USB – Fläktbuss adaption an active conversion</p><p>of data is required.</p><p>This diplomawork will contain and discuss problems and solutions about this conversion.</p>

Alstom Power i Växjö arbetar med utveckling och försäljning av bland annat elektrofilter till rökgasreningssystem vid olika typer av miljövårdsanläggningar för t.ex. kraftverksindustrin. Dessa elektrofilter kontrolleras och regleras med hjälp av styrutrustning uppbyggd av ett antal styrenheter som idag kommunicerar via en egentillverkad standard kallad ”Fläktbuss”. För att övervaka detta system vill man använda handburna PDA och kommunicera med Fläktbussen via USB. För att få kommunikationen mellan USB och Fläktbuss att fungera krävs någon form av aktiv konvertering. Detta examensarbete kommer att ta upp så väl problematik och lösningar kring det problem som finns i samband med denna konvertering. / Alstom Power in Växjö develop and sell equipment like electro filters for enviromental purposes for the power industry. Those filters are controlled and regulated by controlunits, communicating via an Alstoms own standrad called “Fläktbuss”. To supervise and maintain this system, a solution of PDA and USB communication is intresting. To make this USB – Fläktbuss adaption an active conversion of data is required. This diplomawork will contain and discuss problems and solutions about this conversion.