This thesis describes the design and implementation of extension of laboratory training model PIC Edu Kit. It is about set of wireless sensors. These sonsors have to measure temperature and deformation. Mesure of temperature was realized by temperature resistive sensor Pt100 and deformation by resistive tenzometr. These wireless moduls comunication on protocol Wi-Fi. In this work is introduced propose of measuring dictucts for measure of temperautre and deformation. There is evidenced their realization, showed software for receiving dates on PC and programme for the microcontroler.

This thesis deals with the safety of wireless networks and used protocols. The aim is to describe chosen network attacks and demonstrate the feasibility of using the device Pwn Phone. It will also be implemented a system consisting of a mobile application and a server component allowing execution of NFC relay attack on contactless credit cards. System will be tested in real world and evaluation of the success in different conditions will also be part of the thesis.

In this thesis, a framework for Quality of Service provisioning in next generation wireless access networks is proposed. The framework aims at providing a differentiated service treatment to real-time (delay-sensitive) and non-real-time (delay-tolerant) multimedia traffic flows at the link layer. Novel techniques such as bandwidth compaction, channel reservation, and channel degradation are proposed. Using these techniques, we develop a call admission control algorithm and a call control block as part of the QoS framework. The performance of the framework is captured through analytical modeling and simulation experiments. By analytical modeling, the average carried traffic and the worst case buffer requirements for real-time and non-real-time calls are estimated. Simulation results show a 21% improvement in call admission probability of real-time calls, and a 17% improvement for non-real-time calls, when bandwidth compaction is employed. The channel reservation technique shows a 12% improvement in call admission probability in comparison with another proposed scheme in the literature.

Dörröppningar till en operationssal under en pågående operation ökar infektionsrisken. På Centraloperation, Karolinska Universitetssjukhuset Solna, öppnas dörrarna till operationssalen fler gånger än nödvändigt. Muntlig information till personalen har inte minskat antalet dörröppningar på lång sikt. En trådlös tekniklösning som räknar och visualiserar antalet dörröppningar tros ha en mer långvarig effekt, därför skulle en prototyp tas fram. En litteraturstudie gjordes för att hitta komponenter och för att med dessa skapa prototypen.   Prototypen kan räkna och visualisera antalet dörröppningar från en dörr. Då en operationssal oftast har tre dörrar är visualiseringen förberedd för att kunna visa antalet för dessa. Prototypen behöver vidareutvecklas för att kunna användas på under en operation. / Door openings to an operating theatre, during an ongoing operation, increases the risk of infection. At the Central operation department, Karolinska University Hospital Solna, the doors open more frequently than necessary. Oral information to the staff has not reduced the number of door openings for a longer time. A wireless solution that counts and visualizes is believed to have a more longlasting effect, therefore a prototype would be created. A literature study was performed in order to find components and with those build the prototype. The prototype is able to count and visualize the number of door openings from one door. However, since many operating theatres have three doors, the visualization is prepared for this. To be able to use this system during an operation the prototype needs to be further developed.

This thesis studies the Physical Layer (PHY) of the new IEEE 802.11acWireless Local Access Network (WLAN) standard. The 11ac is built basedon the 11n successful standard. The standard is expected to be completedby the end of 2013. And it promises a Very High Throughput (VHT),and robust communication. In order to achieve that, the 11ac uses morebandwidth, it employs higher numbers of Multiple-Input Multiple-Output(MIMO) spatial streams, and higher orders of modulations. The 11ac PHYframe structure is studied in details. The transmitter and receiver blocks areexplained and implemented by MATLAB. Bit Error Rate (BER) and ErrorVector Magnitude (EVM) simulations of the PHY were run. The effectof different Modulation and Coding Scheme (MCS), and bandwidths werestudied. The performance of MIMO and Space-Time Block Coding (STBC)was investigated. The simulation results shows how the 11ac benefits fromthe new employed features. The created MATLAB simulation program canbe used for further tests and research.

A significant growth was witnessed in the field of Wireless Sensor Networks (WSNs), in the previous decade. The objective of this study has been Survey of micro controllers and short-range radio transceivers for wireless sensors and provide an extensive overview of micro controllers and RF-transceivers in the Market and compare the relevant properties for designing wireless sensor nodes. In the survey, RF-transvers from Nordic semiconductors is extensively presented for short-rang wireless protocols some of the protocols are RF-Communication Module, Bluetooth Low Energy Module, ZigBee module and Wi-Fi module.          In WSNs node design Power consumption is one the most important design issue, this thesis work present the different type of WSN protocols energy consumption efficiency and power consumption, compared and conclude graphically.        Microcontrollers are the main part of WSNs node for processing and gathering sensor data. There is different microcontroller’s products in the market however the WSN protocols presented in this thesis uses Cortex-M4 processor which is one of ARM product, the specification and comparison of this product with other products is presented.

This document provides overview of commonly used standards and mechanisms for securing the wireless network based on Wi-Fi protocol. It is covering all important security areas including confidentiality, integrity and authentication. We can find here also detailed analysis and description of functionality of listed mechanisms. Description of possible attacks against listed security mechanisms. There is a measurement of influence of encryption to transfer speed in the another section. It's followed by attacks against particular security mechanisms. And finally, description of deployment of central authentication system.

Mississippi State University was selected for participation in the EcoCAR 3 Advance Vehicle Technology Competition. The team designed its architecture around the use of two UQM electric motors, and a Weber MPE 850cc turbocharged engine. To combine the three inputs into a singular output a custom gearbox was designed with seven helical gears. The gears were designed to handle the high torque and speeds the vehicle would experience. The use of this custom gearbox allows for a variety of control strategies. By optimizing the torque supplied by each motor, the overall energy consumption of the vehicle could be reduced. Additionally, studies were completed on the engine to understand the effects of injecting water into the engine’s intake manifold at 25% pedal request from 2000-3500 rpm. Overall, every speed showed an optimum at 20% water to fuel ratio, which obtained reductions in brake specific fuel consumption of up to 9.4%.

Den här uppsatsen är utförd i syfte att teoretiskt introducera trådlös övervakning och styrning ombordpå fartyg och undersöka om det är ett alternativ till signalkablar. Arbetet belyser regelverk ochstandarder som är relevanta för en installation av trådlöst system ombord och vad som krävs för attinstallationen inte skall bryta mot befintliga bestämmelser och undersöker om trådlösa signaler kanöverföra information trots att sändarna/mottagarna är omgivna av bland annat maskiner och skott avmetall.De allra flesta fartyg har stora mängder med signalkablar ombord som har i uppgift att överföra dataoch signaler mellan olika platser på fartyget. Dessa kablar är ofta placerade tätt intill varandra ochmonterade på ofta svåråtkomliga platser vilket innebär att kabelbrott och andra fel med kablarna ärsvåra att felsöka. Som lösning på detta kan signalerna istället överföras via ett trådlöst nätverk vilkettar bort möjligheten med kabelbrott i signalkablar och behovet att felsöka utdragna signalkablar.Informationen som överförs trådlöst blir också tillgänglig på fler platser om maskinbesättningen harhanddatorer. Alltså finns inte längre behovet av att ta sig till en kontrollpanel för att avläsa informationutan den kan avläsas med en handdator vilket ger upphov till en förenkling och effektivisering avarbetet ombord.Resultatet för arbetet nåddes främst med insamling av relevanta regelkrav och föreskrifter frånTransportstyrelsen och klassningssällskapet DNV samt artiklar och rapporter med mer sakligt teknisktinnehåll och en intervju med en systemtekniker på ett svenskt universitet. Vilket visar att det teoretisktinte finns direkta hinder för en installation av trådlös signalöverföring ombord då inga lagar behandlarexakt just installationen av system med trådlösa signaler. Dock finns krav från klassningssällskap förfunktion och utförande av trådlösa nätverk. Utöver det står det i flera regelverk och standarder attalternativa system som har samma funktion som det befintliga kan godkännas så länge det inte gerupphov till försämrad säkerhet eller driftstörningar. Hänvisning till annan forskning visar också att dentrådlösa signalöverföringen går att bygga upp så att det inte störs ut av allt i fartyget som är byggt avmetall. / This essay is written with the purpose of theoretically introducing wireless monitoring and controllingon board ships and examine whether it is an alternative to signal cables that would work in reality. Theessay illustrates the regulations and standards that are relevant for the installation of a wireless systemon board and what is required for the installation not to violate existing regulations and examineswhether wireless signals can theoretically transmit information despite the fact that the signals aresurrounded by the ships metal hull.A majority of vessels have large ammounts of signal cables installed on board which have the purposeof transmitting data and signals between different locations on board. These signal cables are ofteninstalled tightly together and in difficultly accesible places which implicates that breakage in cables orother cable related issues are hard to troubleshoot and resolve. As a solution to this problem, thesignals that these cables are meant to carry can be transmitted wirelessly which completely eliminatescable breakage and the need of troubleshooting cable related issues in places that are hard to access.The information thats being transmitted wirelessly also becomes accesible in multiple places on boardas long as the crew on board uses handheld computers that are connected to the local network.Therefore there i no need to enter the control room to read the information that is being transmitted,but can instead be recieved wirelessly in the entire engine room using a handheld computer. Thismakes working in the engine room both easyer and more efficient.The results of this essay were achieved by collecting information from relevant regulations anddirectives from Transportstyrelsen and DNV and also articles and reports with substantive technicalcontent as well as a interview with a systemtechnician at a swedish university. The results shows thattheoretically there are no direct obstacles for the installation of wireless signal transmitters on board.As there are no specific regulations regarding wireless systems that directly correlate with what thisessay is mentioning. It is generally written that when it comes to electrical installations, the cablesbeing installed must, amongst other demands, meet certain dimensions and have a certain distance toeach other to prevent unnecessary magnetic fields to occur. This is not applicable to the wirelesssystem that the essay deals with as the essay is about eliminating signal cables. However it I stated inseveral regulations and standards that alternatives to already existing systems that have correspondingfunctions to the already existing systems can be considered as long as the alternative system does notcause operational disruptions or impair safety. Reference to other research shows that wireless signaltransmitting can be built in such ways that the wireless signals are not disrupted by the metal hull ofthe vessel.

Esta tesis consiste en tres trabajos enfocados al desarrollo de varios sistemas que sean capaces de registrar el movimiento sísmico de la tierra y grabarlo en ficheros para su posterior análisis. Partimos de la base de la creación de una serie de sensores para el registro del ruido sísmico, dispuestos en forma circular y así poder detectar las ondas sismológicas. La hipótesis con la que trabajamos es la de interconectar entre si los nodos sensoriales y de esta manera crear una red sensorial la cual reporte las muestras de ruido sísmico a un servidor y éste sea capaz de mostrar la forma de las señales en tiempo real. Este sistema nos facilitará el almacenamiento y tratamiento de los datos registrados por cada uno de los nodos con la posibilidad de análisis casi instantáneo. Como línea de partida, se ha implementado un sistema de comunicación sensorial a través de una red wifi en la cual se monitoriza en tiempo real un sistema de climatización y se optimiza el consumo de éste regulando distintos factores en función de los valores de los sensores distribuidos por toda el área afectada. Este trabajo ha generado el primer artículo de investigación publicado en la revista Sensors (doi:10.3390/s20133611). El código generado junto con la experiencia, las pruebas realizadas y los resultados obtenidos nos van a servir para los sensores sísmicos. En el segundo trabajo se ha diseñado, implementado y probado un sistema de zonificación mediante una red wireless de sensores triaxiales los cuales son capaces de registrar en tiempo real el movimiento sísmico de edificios y mostrar estas señales en un navegador cliente ubicado en Internet. Este trabajo ha generado el segundo artículo de investigación publicado en la revista Sensors (doi: 10.3390/s21113875). En el tercer y último trabajo se ha diseñado, implementado y probado un sistema de grabación del ruido sísmico en array por medio de una red de sensores wireless. El sistema es capaz de utilizar sensores verticales de 4,5Hz de bajo coste y también sensores triaxiales proporcionando una curva de dispersión cuasi idéntica a los sistemas comeciales actuales pero a un coste mucho menor. Este trabajo ha generado el tercer artículo de investigación publicado en la revista Sensors (doi: 10.3390/s22218103). Este trabajo a dado pie a una solicitud de patente (P202230702).