Halleffektsensorn är en magnetisk sensor som används till olika applikationer. Den fungerar bara när ett magnetiskt fält eller en elektrisk ström finns i närheten. Detta arbete är fokuserat på en specifik sensor men beskriver även hur en Halleffektsensor generellt är uppbyggd. Den specifika sensorn används till avståndsmätning. En rad olika tester har utförts för att försöka öka det avstånd som sensorn kan detektera..

This work is an experimental study where knock sensor placements are investigated using engine tests. The aim is to studythe quality of the signal from knock sensors and how the signal for engine control is affected at different sensor locations on Scanias, engine DC13. To find out at witch position on the engine youcan get a usable signal for engine control, the engine is running while the knock sensors with advanced measurement equipment is connected to the engine. Evaluation of signals from the knock sensors are made in the computer program Matlab. The program is producing a seriesof plots, from these plots it is visually possible to draw conclusions and find connections.

Soft rubber flooring have gained in popularity over the last years. Rubber flooring al-lows cow to move more freely without slipping and improves claw and leg health. The purpose of this study was to investigate the influence of a stepwise introduktion of soft flooring on cow`s placement in cow houses with robotic milking. A case study was carried out in a herd in northern Sweden with 41 cows. Observations were made every 15 minutes between 09.00 and 16.00 concering cow placement in cu-bicles, in cubicle alley, in feeding alley and in feeding alley with the head through feed-ing gate. One observation period was carried out per flooring alternativ: 1) all concrete slatted floor, 2) rubber slatted floor in feeding alley and concrete slatted floor in cubicle alley and 3) rubber slatted floors in feeding alley and solid rubber floors in cubicle alley. The study showed that 6 %-units fewer cows lay in the cubicles when the feeding alley surface was slatted rubber.

This master thesis is a study on how a rategyro triad, an accelerometer triad, and a magnetometer triad can be integrated into a navigation system, estimating a vehicle?s attitude, i.e. its roll, tipp, and heading angles. When only a rategyro triad is used to estimate a vehicle?s attitude, a drift in the attitude occurs due to sensor errors.

In order to detect movements and vibrations on different appliance, especially robots and self-going devices are used different sensors. One of the most used movement sensors are accelerometers. They are three different types of accelerometers one-axes, two-axes and three-axes. They can be analogue or digital. Husqvarna AB uses an accelerometer to detect movements of their self-going lawnmower Automower.

This Master thesis discusses the development of a virtual human soft tissue object for use in exercise applications of various medical procedures.The soft tissue object to be developed shall look like, feel like and behave as living human tissue. It shall give the user a realistic feeling of weight, softness and roughness, and shall behave in a correct way for exercise purposes. The soft tissue model is to be used in a three dimensional stereo graphic environment with haptic feedback. A prototype for practicing the procedure of inserting a catheter is built. The prototype is used to evaluate the potential of the virtual environment for medical exercise applications, and to assess the realism and usability of the soft tissue object.

This bachelor thesis is about an ultrasonic sensor, implemented in a bubble chamber in Artis. The sensor consists of the piezoelectric sensor and an electronic control circuit. The control circuit consists of a programmable microprocessor, PIC18F2420 and a circuit, which sends the excitation signal to the piezoelectric sensor, and later receives the echo. This bachelor thesis consists also of a theoretical study, which examines different techniques of liquid level sensing in a chamber. The study discusses which factors are important in liquid level sensing and examine accepted methods.

Internet is the future and VoIP (Voice over Internet Protocol) is growing in use. Companies are starting to realise the benefits with VoIP. Skype is the number one soft phone on the market but it doesn't satisfy the needs of companies (e.g. transfer calls, redirects calls and so forth) and leaves therefore a gap. The purpose of this master thesis is to provide Objektor AB (thesis initiator) with tips on how to design a usable soft phone that they know is based on relevant human computer interaction research.The method used in the thesis has been iterative development.

Syftet är att konstruera en sensor för att identifiera objekt på bilden från en videokamera. Sensorn består av en mikroprocessor som programmeras i assembler samt en enkel CMOS-videokamera och tillhörande analag elektronik. Sensorn är främst tänkt att användas för övervakning inom tillverkningsindustrin..

Bakgrund: Den 22 mars 2000 gick det ut ett pressmeddelande om att Wilh. Sonesson AB tecknat en avsiktsförklaring med Ronneby kommun om att köpa Soft Center i Ronneby. Frågeställning: Vilka är de empiriska data som rör affären? Hur ser aktörerna på affären? Vad innebär aktörernas föreställningar för affären? Syfte: Syftet är att utifrån våra frågeställningar belysa affären mellan Wilh. Sonesson och Ronneby kommun och därmed hjälpa affärens aktörer att inse vad som krävs för att affären skall bli lyckosam.

In the future network-based Swedish Defence (NBD), attaining information superiority will be of great importance. This will be achieved by a network of networks where decision-makers, information- and weapon-systems are linked together. As a part of the development of NBD, we have performed a study of user interface design for a future network-based tool package for analysis of sensor systems, referred to as the C2SR-system. This thesis was performed at Ericsson Microwave Systems AB, Sensor and Information Networks, during the autumn 2002. A pre-study concerning the requirements of usability, trustworthiness and functionality of a user interface for the C2SR-system was performed.

I en ambition att öka effekten och insatsberedskapen i den svenska försvarsmakten har stora omorganisationer skett efter det kalla krigets slut. Den senaste förändringen innebär att värnplikten läggs på is under fredstid och att kontraktsanställda soldater skall ingår i förbanden istället. Detta har medfört reduktioner i personalvolymer, troligtvis för att kunna bekosta löner för de kontraktsanställda soldaterna. Inom flygvapnets markförsvarsförband har reduceringen blivit så stor att vid en spriding av det svenska flygvapnet, finns inte tillräckligt med förband för att skydda samtliga baser effektivt. För närvarande används hundar som sensor för lokalisera fientliga spaning och sabotageförband vid och omkring svenska flygbasområden.

This examination paper concerns how a organization can reach right quality. In this case the focus is on the communication of the soft product quality within an organization to achieve right quality. To fulfill the aim of this study a case company has been used to be able to show the absence in the topic. The questions of the study are: How have the customer?s needs been communicated within the organization? What absences are there today concerning the communication of the customer?s needs within the organization? How can the communication of the customer?s needs within the organization improve?The aim of this study is to describe and analyse how the transmitting of the customer?s needs concerning soft product quality is made today in the case company and to reach any improving suggestions.

Bakgrund: Den 22 mars 2000 gick det ut ett pressmeddelande om att Wilh. Sonesson AB tecknat en avsiktsförklaring med Ronneby kommun om att köpa Soft Center i Ronneby. Frågeställning: Vilka är de empiriska data som rör affären? Hur ser aktörerna på affären? Vad innebär aktörernas föreställningar för affären? Syfte: Syftet är att utifrån våra frågeställningar belysa affären mellan Wilh. Sonesson och Ronneby kommun och därmed hjälpa affärens aktörer att inse vad som krävs för att affären skall bli lyckosam. Avgränsningar: Vi koncentrerar oss på det abstrakta innehållet i affären ge-nom att undersöka vilka föreställningar om affären de olika aktörerna har. Metod: I denna kvalitativa undersökning har vi genomfört intervjuer med personer från Wilh.

This report deals with the modeling of a part of the communication system based on the IEEE 802.11a standard which represents the next generation of wireless LAN with greater scalability, better interference immunity and significantly higher speed, up to 54 Mbps. 802.11a uses Orthogonal Frequency Division Multiplexing (OFDM) where modulation is performed by an IFFT and the demodulation by an FFT. After modeling the FFT in Matlab and C, the FFT implementation has been validated using a soft microprocessor core by Xilinx (Microblaze) and the results were compared..