En läskamera är ett synhjälpmedel där en kamera filmar ett läsbord och sen visar bilden på en skärm.Bilden går sedan att manipulera så att man t.ex. får svart text på grön bakgrund. Det går även attförstora texten. När konkurrensen ökar och kameran blir bättre med HD-teknik så måste ävenbelysningen, som lyser upp läsbordet, uppdateras. Dagens belysning är ojämn och man kan se ringarefter linserna. Det är även önskvärt att byta ut de halogenlampor som används idag.Rapporten behandlar hur olika ljusledare, reflektorer eller linser kan ge en bra och jämn ljusbild. Detär även viktigt att hitta en belysning som återger färger braFör att få ett flimmerfritt ljus konstrueras en pulsbreddsmodulator med hög frekvens. Den gör detäven möjligt att dimma manuellt eller reglera automatiskt för eventuella förändringar i allmänljuset.Att ljuset är jämnt över hela läsbordet är önskvärt för att få bästa bild. Vi undersökte även om ettprogram kan kompensera för infallande eller frånvarande av ljus. Programmet ska kunna överföras tillen FPGA monterad på ett kretskort. / A video magnifier is a visual aid where a camera is recording on a reading table and then shows thepicture on a display. The picture can then be manipulated so that you e.g. you get a white text on agreen background. You are also able to enlarge the text. As the competition increases and camerasbecome better with HD-technique the lighting that lights up the reading table has to be updated.Today's lighting is irregular and one can see rings after the lenses. It's also desirable to replace today'shalogen lamps.In the report, we check if it is possible that light conductors, reflectors and lenses can give a good andeven light picture. It is also important to find a lighting that reproduces colors in a satisfying way.In order to get a flicker free light we designed a pulse with modulator with high frequency. This makesit possible to dim manually or control automatically for changes in the regular light.The picture is at its best when the light is even over the entire reading table. We investigated in aprogram that might compensate for possible falling or lack of light. The program will be transferredinto an FPGA to enable it to be assembled onto a printed circuit board.

This thesis work consisted of the development of a virtual instrument that automates enzyme activity measurements and spectrum measurements with the spectrophotometer UVmini-1240. The purpose was to expand the functionality of the instrument, to eliminate the human error and to decrease the amount of time spent on measurements. A PC was connected to the UVmini-1240 via a RS-232C interface and the cell position and temperature was regulated with a CPS-240A controller. The new interface allows all the parameters to be set in the same place. It allows a visualization of the continuous monitoring of the sample absorbance and the option to save the data for post-processing. Also a module for measuring the spectrum of a sample in the wavelength range of 190 nm to 1100 nm is included. The graphical programming language LabView was used to develop the virtual instrument. This thesis work also contained measurement series of the catalase enzyme activity. These were carried out to determine the best storage temperature for the catalase solution and to determine the optimal surrounding temperature for the highest activity in the catalase solution. The conclusions were that the activity does not change considerably the first week of storage, not matter the temperature, and that the activity goes down when the surrounding temperature reaches above 30° C. These measurements were part of a bigger project to develop an ultrasonic method for measuring enzyme activity at the Institute of Acoustics at C.S.I.C in Madrid.

The report deals with energy conservation, mainly in the field of portable energy, which is asubject that today raises questions around the world. This report describes the design and theimplementation of a Battery Management System on the platform NI ELVIS II+ managed bythe software Labview. The first aim has been on finding information about the design of theBattery Management System that corresponds to the choice of the battery itself. The systemwas designed completely independent with different charging methods, simulations ofdischarge, and its own cell balancing, as a 3 cells battery pack was used. The battery chosenwas the lithium-ion technology that has the most promising battery chemistry and is the fastestgrowing. Several experimentations and simulations have been done, with and without cellbalancing that permited to highlight that the cell balancing is mandatory in a Batterymanagement System. Furthermore, a simulation of use of the battery in an Electrical Vehiclewas made, which can lead to conclude that the Lithium-Ion battery must be manageddifferently to be used in the application of an Electrical Vehicle.

Acreo AB has developed a radar prototype used for illustrate how the SiGe technology could be used. The radar prototype needs further development with a fast interface and a more integrated design. The beginning of the report describes the radar technique theory and the composing equations. The theoretical background is used to explain each component of the system. The report continues by specifying the target of the next radar prototype. The chosen implementation is motivated and the mode of procedure is described in detail. Test benches were used to verify correct functionality and some limits were found. The report is concluded with test results and recommendations on further enhancements. / Acreo AB har utvecklat en radarprototyp för att illustrera hur SiGe teknologi kan användas. Prototypen behöver vidareutvecklas med ett snabbt digitalt interface och en kompaktare design. Rapporten inleds med att beskriva radarteknikens funktionalitet och de utgörande ekvationerna. Den teoretiska bakgrunden används för att förklara varje komponent som systemet utgörs av. Rapporten fortsätter med att specificera målet med nästa radarprototyp. Den valda implementationen motiveras och tillvägagångssättet beskrivs detaljerat. Testuppkopplingar verifierade korrekt funktionalitet och begränsningar insågs. Rapporten avslutas med en sammanfattning av uppnådda testresultat och rekommendationer på framtida förbättringar.

<p>En läskamera är ett synhjälpmedel där en kamera filmar ett läsbord och sen visar bilden på en skärm.Bilden går sedan att manipulera så att man t.ex. får svart text på grön bakgrund. Det går även attförstora texten. När konkurrensen ökar och kameran blir bättre med HD-teknik så måste ävenbelysningen, som lyser upp läsbordet, uppdateras. Dagens belysning är ojämn och man kan se ringarefter linserna. Det är även önskvärt att byta ut de halogenlampor som används idag.Rapporten behandlar hur olika ljusledare, reflektorer eller linser kan ge en bra och jämn ljusbild. Detär även viktigt att hitta en belysning som återger färger braFör att få ett flimmerfritt ljus konstrueras en pulsbreddsmodulator med hög frekvens. Den gör detäven möjligt att dimma manuellt eller reglera automatiskt för eventuella förändringar i allmänljuset.Att ljuset är jämnt över hela läsbordet är önskvärt för att få bästa bild. Vi undersökte även om ettprogram kan kompensera för infallande eller frånvarande av ljus. Programmet ska kunna överföras tillen FPGA monterad på ett kretskort.</p> / <p>A video magnifier is a visual aid where a camera is recording on a reading table and then shows thepicture on a display. The picture can then be manipulated so that you e.g. you get a white text on agreen background. You are also able to enlarge the text. As the competition increases and camerasbecome better with HD-technique the lighting that lights up the reading table has to be updated.Today's lighting is irregular and one can see rings after the lenses. It's also desirable to replace today'shalogen lamps.In the report, we check if it is possible that light conductors, reflectors and lenses can give a good andeven light picture. It is also important to find a lighting that reproduces colors in a satisfying way.In order to get a flicker free light we designed a pulse with modulator with high frequency. This makesit possible to dim manually or control automatically for changes in the regular light.The picture is at its best when the light is even over the entire reading table. We investigated in aprogram that might compensate for possible falling or lack of light. The program will be transferredinto an FPGA to enable it to be assembled onto a printed circuit board.</p>

ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California / This paper discusses the current development of all-in-one telemetry displays. This system provides a self-configuring environment utilizing common telemetry display objects that setup and deploy. Often range display systems require frequent revision to reason with changing requirements. The display is rendered accordingly as a strip-chart equivalent or other element, per requirements from a flight safety officer for example. Our reusable code system approach is based on a novel abstraction of the display elements. The approach may be deployed beyond the decommutation stage as is typically done or interface directly to a plug in software decommutator. This system's plug-and-play functionality facilitates rapid deployment of interoperable Department of Defense (DOD) range displays and recorders.

Στην παρούσα εργασία θα κατασκευασθεί διάταξη ελέγχου για τον Πιεζοηλεκτρικό κινητήρα οδεύοντος κύματος. Αρχικά συγκεντρώθηκε όλη η απαραίτητη βιβλιογραφία αναφορικά με τους Πιεζοηλεκτρικούς κινητήρες. Η αναζήτηση χωρίστηκε σε δύο μέρη. Αναζήτηση τρόπων οδήγησης του κινητήρα και σε αναζήτηση μεθόδων ελέγχου αυτού. Στη συνέχεια συγκεντρώθηκαν όλες οι διαθέσιμες διατάξεις για την οδήγηση του κινητήρα που είχαμε στη διάθεση μας. Οι διατάξεις αυτές ήταν δύο. Η πρώτη ήταν η εργοστασιακή διάταξη, η οποία περιλαμβανόταν στο πακέτο αγοράς του κινητήρα και η δεύτερη η διάταξη που είχε κατασκευασθεί από το Χ. Πάτσιο στα πλαίσια της διπλωματικής του εργασίας. Για την όσο το δυνατόν καλύτερη κατανόηση της λειτουργίας τους καθώς και αναγνώριση των μειονεκτημάτων, ώστε να τα απαλείψουμε στη δική μας διάταξη, συντελέστηκαν αρκετά πειράματα με αυτές. Το επόμενο βήμα ήταν να αποφασίσουμε ποιo είδος μετατροπέα θα χρησιμοποιήσουμε. Αποφασίστηκε να διατηρήσουμε το σκεπτικό που αναπτύσσεται στη διπλωματική εργασία του Χ. Πάτσιου, μιας και πληρούσε τις προϋποθέσεις που θέσαμε και ήταν καινοτόμο. Η κατασκευή της διάταξης οδήγησης έγινε με ολοκληρωμένα ισχύος, δηλαδή με ολοκληρωμένα που περιλαμβάνουν διακοπτικά στοιχεία ισχύος. Τα στοιχεία αυτά χρησιμοποιήθηκαν για πρώτη φορά στο Εργαστήριο Ηλεκτρομηχανικής Μετατροπής Ενέργειας και για το λόγο αυτό ήμασταν ιδιαιτέρως επιφυλακτικοί. Τελικά κρίθηκαν αντάξια των προσδοκιών που είχαμε θέσει. Στο σημείο αυτό άρχισε το δεύτερο τμήμα της εργασίας αυτής, η κατασκευή λογισμικού ελέγχου. Υλοποιήθηκαν τρεις μέθοδοι ελέγχου, on/off, PID και Ασαφής έλεγχος. Αρχικά παρατίθεται το θεωρητικό υπόβαθρο των μεθόδων και στη συνέχεια η εφαρμογή τους στο κινητήρα. Το λογισμικό αναπτύχθηκε σε περιβάλλον LabVIEW. / In this paper, a resonant converter has been studied and constructed, in order to drive an Ultrasonic motor. In advance, three different control schemes have been applied (OnOff, PID and fuzzy).

The South African Department of Science and Technology is striving to develop a means of producing hydrogen gas in remote and civil areas through the use of renewable energy sources. For the purposes of creating such mobile hydrogen production facilities, a small-scale hydrogen production system based on renewable energy sources needs to be developed and modelled. This system is to serve as a pilot plant for further development of a large scale mobile hydrogen production facility. This work focuses on the characterisation of sizing algorithms for renewable energy sources which can determine component configurations that satisfy power requirements of the system. Additionally, optimal sizing techniques must be developed which can output an optimal plant configuration to a user based on cost and efficiency. To this end, a literature study was done on all the components that make up a renewable energy hydrogen system. The techniques researched were then applied to create algorithms capable of correctly sizing the required components of such a plant. These techniques were integrated into an application created in the LabVIEW environment, which is capable of outputting an optimal plant configuration based on the specific needs of a client. A case study was defined with which the results of the simulation models were verified. Using this work, a future, more comprehensive system may be developed and commercialised, building from the techniques implemented here. / Thesis (MIng (Computer and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013

The South African Department of Science and Technology is striving to develop a means of producing hydrogen gas in remote and civil areas through the use of renewable energy sources. For the purposes of creating such mobile hydrogen production facilities, a small-scale hydrogen production system based on renewable energy sources needs to be developed and modelled. This system is to serve as a pilot plant for further development of a large scale mobile hydrogen production facility. This work focuses on the characterisation of sizing algorithms for renewable energy sources which can determine component configurations that satisfy power requirements of the system. Additionally, optimal sizing techniques must be developed which can output an optimal plant configuration to a user based on cost and efficiency. To this end, a literature study was done on all the components that make up a renewable energy hydrogen system. The techniques researched were then applied to create algorithms capable of correctly sizing the required components of such a plant. These techniques were integrated into an application created in the LabVIEW environment, which is capable of outputting an optimal plant configuration based on the specific needs of a client. A case study was defined with which the results of the simulation models were verified. Using this work, a future, more comprehensive system may be developed and commercialised, building from the techniques implemented here. / Thesis (MIng (Computer and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013

This thesis describes the design of the data datalogger for collecting the operating data of the machine tool. Dataloggers and data acquisition systems are used in scientific research as well as in the industry for recording and analyzing large amounts of data. The control unit of the proposed system is the National Instruments CompactRIO platform. System software is created in the LabVIEW programming environment and uses both the FPGA circuit and the real-time processor of the control unit. Measured data are stored on the unit and in the database. The measurement status is reported via email.