Music today is a big part of a person's everyday life and can influence emotions as wellas initiative and motivation. This effect together with development in technology hasled to that music today is accessible and can be played from a large amount of differentkinds of products. This in turn has meant that the demand for smaller audio playbackdevices is greater than ever.The goal of this project is to develop a concept for energy-efficient speakers withwireless communication that has the ability to obtain and play high quality music. Thespeakers will use the latest available technology and at the same time, using digitalsignal processing, have a low environmental impact through high energy efficiencyand low power consumption. Parallel to this work a pilot study will be conducted tosee trends in listener preference of sound.The result achieves the goals pledged while power consumption in sleep mode is solow that they meet the demands of tomorrow.

Today electronics becomes more and more complex and to keep low costs and power consumption, both digital and analog parts are implemented on the same chip. The degree of automization for the digital parts have increased fast and is high, but for the analog parts this has not come through. This have created a big gap between the degrees of automization for the two parts and makes the analog parts the bottleneck in electronics develop. Research is ongoing at Electronics systems group at Linköping University target the increase of design automization for analog circuits. An optimizationbased approach for device sizing is developed and for this a good optimization method is needed which can find good solutions and meet the specification parameters.

This Master's Thesis describes the design of a new system where a digital signal processor has been added to an existing imaging system consisting of field programmable gate arrays. The new system will offer a higher degree of flexibility by considerably shortening the design time and make it possible to implement more complex algorithms than the existing ones. The choice of system architecture and a test implementation are discussed. The test implementation consists of a program for the digital signal processor and VHDL code for one of the field programmable gate arrays. The code for the digital signal processor was designed for testing on an evaluation board from Texas Instruments.

Att ett grafikkort ska behandla data och sen generera en bild på en skärm är en ganska logisk funktion för ett grafikkort. Vad som har gjorts här är att alla grundläggande funktioner för grafikkortet har tagits bort, detta för att ingen behandling ska göras. Detta har gjorts för att kunna låta data passera genom kortet med så hög hastighet som möjligt. Att låta data gå genom kortet var det första steget. Efter det skulle förhoppningsvis ett stabilt system ha uppnåtts där vi kunde göra överföringen av data snabbare.

This report describes the development of a sample loader for my diploma work at Q-linea AB in Uppsala. The sample loader will replace the process of loading fluid samples into Q-linea?s instrument for biomolecule analysis. The earlier process was done by hand and was a time consuming and inefficient task.The work was initiated with a design phase where an overview of the system was created. The sample loader will be receiving text commands from a PC that coordinates all the subsystems like pumps and lasers on the analysis instrument.

Detta examensarbete har utförts på uppdrag av Amersham Biosciences i Uppsala och undersöker hur ett specifikt instrument för proteinseparation skall kunna styras och övervakas över Internet. I arbetets inledning har en noggrann utredning av befintlig teknik utförts och utifrån dessa erfarenheter har en produkt utarbetats. Produkten är ett mikrokontrollerstyrt system och arbetet har således inneburit både hård- och mjukvarukonstruktion. I mikrokontrollern finns bland annat ett realtidsoperativsystem, en TCP/IP-stack och en webbserver implementerade. Hårdvarukonstruktionen har skett i två prototypsteg för trots att mycket tid lades på att hitta lämpliga komponenter visade sig den första prototypen inte fungera på önskvärt sätt.

This thesis is the result of the author?s interest in music and electronics, namely the design and manufacturing of a stereo sound system with an active crossover. In short it can be stated that an active crossover has many advantages over its traditional passive counterpart. The active design naturally results in a more complex system comprised of a multiple number of components. This report deals with the theoretical aspects of preamplifiers, crossovers and power amplifiers as well as power supply and control.

The last few decades the development in the field of electronics has been huge. The components performance gets better at the same time as the manufacturing cost decreases. Many of the design moments that have to be done, are done automatically today, but it can get better. Especially for analog circuit design.At Electronic System in Linköpings universitet, research is in progress to develop a tool that can design analog circuits in reasonable time. It means that it has to size the components (transistors, resistances, capacitances etc), so that the circuit can fulfill the performance requirements.

Det har blivit allt mer intressant för företag att investera i miljön. I bilindustrin strävar man efter att få så bränslesnåla fordon som möjligt och man har där kommit långt. Inom varvindustrin har man inte kommit lika långt.Elektronik-mekanik företaget Q-TAGG R&D har under en längre tid utvecklat ett system till fartyg som avser minska bränslekonsumtionen för fartyg. Samtidigt har det blivit allt mer populärt med s.k. surfplattor och dessa ger en ny möjlighet inom grafiska gränssnitt.

Examensarbetet har genomförts med utveckling och undersökning av signalbehandlingsalgoritmer för MEMS-gyron. Idag används många MEMS-gyron i olika elektronikprodukter. Företaget Motion Control utvecklar elektronik och inbyggd programvara och de har bland annat tagit fram MultiPos, som är en huvudmus för rörelsehindrade. MultiPos är en MEMS-gyro-baserad datormus. MEMS-gyron används för att känna av huvudrörelser som användaren gör, men det är önskvärt med en bättre signalbehandling, d.v.s.

I dagens samhälle har internet blivit en stor del av vårt dagliga liv. Nu utför man nästan alla sina ärenden på internet via olika webbplatser. Man handlar böcker, elektronik, utför bankärenden och läser nyheterna. Många antar att dessa webbplatser är säkra, men de flesta är medvetna om någon typ av hot på internet. De vet att man inte ska öppna program eller filer man inte känner igen, dock finns det fler faror.Vårt projekt går ut på att skapa en automatiserad process som visar dessa faror.

The objective of this thesis is to make a training material for KSU, which shows how radiation affects the different electronic components in a radiological environment.All electronic systems in the presence of high ionizing radiation can experience difficulties and be destroyed.This influence may compromise the control system and thus the safety of a nuclear reactor plant.To achieve this objective requires a description of electronic components and sensors, to better understand its function.This thesis will also show the possible solutions available that the author found interesting.Organizations such as NASA, CERN and ESA have worked to develop electronic components immune to radiation. Those organizations have also developed a test protocol that guarantees to a certain extent the security of electronic components in a radiological environment.Since we know how the material reacts with the radiation, it could develop a material that can be resistant to radiation or like CMOS technology has proposed, to reduce the component to avoid the storage of charge in the oxide.Another solution can be the GRAPHENE. Its features will revolutionize the electronics and provide answer to the radiation problems, Graphene will replace Silicium and the electronic components will only have a few nanometers dimensions so the oxide area also reduces, and in this way avoid the known problem of storage of charge..

Development and construction of an electronic Breakout box is the main work for this thesis. The box is a part of a test system for the component Fuel Flow Transmitter and should convert signals to be suitable for a frequency counter. A previously constructed Breakoutbox for this purpose is being old and needed to be recreated. So SAAB Aerotech, Aircraft services, the company for the thesis work wanted to construct a new, more sustainable Breakoutbox adapted to a more modern technology. The signals to the box comes from the transmitter and should be converted to suitable signals for a frequency counter so it can show pulse and time difference between the signals.

Examensarbetet har genomförts med utveckling och undersökning av signalbehandlingsalgoritmer för MEMS-gyron. Idag används många MEMS-gyron i olika elektronikprodukter. Företaget Motion Control utvecklar elektronik och inbyggd programvara och de har bland annat tagit fram MultiPos, som är en huvudmus för rörelsehindrade. MultiPos är en MEMS-gyro-baserad datormus. MEMS-gyron används för att känna av huvudrörelser som användaren gör, men det är önskvärt med en bättre signalbehandling, d.v.s.

Free Space Optics (FSO) has received a great deal of attention lately both in the military and civilian information society due to its potentially high capacity, rapid deployment, portability and high security from deception and jamming. The main issue is that severe weather can have a detrimental impact on the performance, which may result in an inadequate availability. This report contains a feasibility study for an all-optical free-space link intended for short-range communication (200-500 m). Laboratory tests have been performed to evaluate the link design. Field tests were made to investigate availability and error performance under the influence of different weather conditions.