Examensarbete har utförts för AIAB DC Systems i Karlstad. Vår uppgift gick ut på att göra ett övervakningssystem för DC-system. Enheten skall användas för att övervaka isolerade DC-system avseende spänningsnivåer och isolation samt larma vid fel. Tidigare har man haft ett analogt system ute på marknaden men nu vill man ha ett digitalt processorbaserat system. Vi har använt oss av en 8-bitars RISC-processor. Programmeringen har gjorts i assembler med hjälp av ett utvecklings-kit och sköter logiken för övervakningen. Programmet manövreras med två tryckknappar och en display. Programmet vi har tagit fram behöver kompletteras med vissa funktioner. Vi har inte hunnit få klar en prototyp eftersom projekttiden tog slut. / This thesis was performed for AIAB DC Systems in Karlstad. Our task is to make a monitoring system for DC-system. The unit is used to supervise voltage and isolation in isolated DC-systems. The unit shall alarm if there is any failure in the system. The company now has an analog solution on this product but now they want a digital version. An 8-bit RISC processor has been used to take care of the logic. The programming has been done in assembler with the help of a developing kit. The program operates with two buttons and a display. The program that we made needs to be added with some functions. We haven’t got a prototype ready yet due to the project time was expired.

This text is a treatise on microcontroller programming. It introduces the major peripherals found on most microcontrollers, including the usage of them, focusing on the ATmega644p in the AVR family produced by Atmel. General information and background knowledge on several topics is also presented. These topics include information regarding the hardware of a microcontroller and assembly code as well as instructions regarding good program structure and coding practices. Examples with code and discussion are presented throughout. This is intended for hobbyists and students desiring knowledge on programming microcontrollers, and is written at a level that students entering the junior level core robotics classes would find useful.

No description available.

No description available.

<p>Examensarbete har utförts för AIAB DC Systems i Karlstad.</p><p>Vår uppgift gick ut på att göra ett övervakningssystem för DC-system. Enheten skall användas för att övervaka isolerade DC-system avseende spänningsnivåer och isolation samt larma vid fel. Tidigare har man haft ett analogt system ute på marknaden men nu vill man ha ett digitalt processorbaserat system.</p><p>Vi har använt oss av en 8-bitars RISC-processor. Programmeringen har gjorts i assembler med hjälp av ett utvecklings-kit och sköter logiken för övervakningen. Programmet manövreras med två tryckknappar och en display.</p><p>Programmet vi har tagit fram behöver kompletteras med vissa funktioner. Vi har inte hunnit få klar en prototyp eftersom projekttiden tog slut.</p> / <p>This thesis was performed for AIAB DC Systems in Karlstad.</p><p>Our task is to make a monitoring system for DC-system. The unit is used to supervise voltage and isolation in isolated DC-systems. The unit shall alarm if there is any failure in the system. The company now has an analog solution on this product but now they want a digital version.</p><p>An 8-bit RISC processor has been used to take care of the logic. The programming has been done in assembler with the help of a developing kit. The program operates with two buttons and a display.</p><p>The program that we made needs to be added with some functions. We haven’t got a prototype ready yet due to the project time was expired.</p>

No description available.

No description available.

Mikrocontroller erfreuen sich großer Beliebtheit in Elektronik-Bastelprojekte. Unzählige Anschlüsse und Features wie Timer, Counter, AD-Wandler, ... erlauben die Umsetzung komplexer Projekte. Doch wie erfolgt die Programmierung? Der Vortrag gibt einen einführenden Überblick zu AVR Mikrokontrollern, Programmierwerkzeugen und deren Anwendung anhand von Beispielen.

Work treat of proposal universal acoustic switch (VOX) for handie - talkie PMR. Except acoustic switch has have arrangement possibility datal communication with mate. Fulfilment is bent on effectiveness and low consumption of all arrangement.

This thesis has been performed in order to earn a master's degree in electrical engineering. The task was to implement an automatic voltage regulator, AVR, to control the terminal voltage of the synchronous generator Svante at the Division of Electricity at Uppsala University. The AVR uses Bluetooth technology to transfer a control signal produced by a programmable logical controller, PLC, to phase- mounted SSRs that decides what proportion of the AC from a six-phase brushless exciter that is to be used for the magnetization of the rotor. Test runs of the AVR were preformed with a regulator optimized according to the Ziegler-Nichols method and a static exciter that uses brushes and slip rings to apply voltage to the rotor winding. The results obtained complies with the assigned requirements set for this thesis and the AVR. The primary focus of this thesis mainly lies in the construction of the control system, which include the programming of both PLC and Bluetooth communicating devices.