Testing the performance and feasibility of Bluetooth communications in pervasive systems

Smart and mobile environments require seamless connections. However, due to the frequent process of ''discovery'' and disconnection of mobile devices while data interchange is happening, wireless connections are often interrupted. To minimize this drawback, a protocol that enables an easy and fast synchronization is crucial. Bearing this in mind, Bluetooth technology appears to be a suitable solution to carry on such connections due to the discovery and pairing capabilities it provides. Nonetheless, the time and energy spent when several devices are being discovered and used at the same time still needs to be managed properly. It is essential that this process of discovery takes as little time and energy as possible. In addition to this, it is believed that the performance of the communications is not constant when the transmission speeds and throughput increase, but this has not been proved formally. Therefore, the purpose of this project is twofold: Firstly, to design and build a framework-system capable of performing controlled Bluetooth device discovery, pairing and communications. Secondly, to analyze and test the scalability and performance of the \emph{classic} Bluetooth standard under different scenarios and with various sensors and devices using the framework developed. To achieve the first goal, a generic Bluetooth platform will be used to control the test conditions and to form a ubiquitous wireless system connected to an Android Smartphone. For the latter goal, various stress-tests will be carried on to measure the consumption rate of battery life as well as the quality of the communications between the devices involved.

Estudio de la cinemática de un móvil de dos ruedas y su control para mantener el equilibrio controlado por Bluetooth

Este proyecto se centra en el control de un robot con estabilidad dinámica más concretamente en un robot que responde al conocido modelo del péndulo invertido. Una de las aplicaciones más famosas del péndulo invertido es el Segway. El péndulo invertido del Segway se define solo en un eje, al tener dos ruedas paralelas como soporte. El proyecto general consta de tres partes, poner el robot en equilibrio, el control remoto del robot vía Bluetooth y el uso de los encoders de los motores para manejar el robot. Poner el robot en equilibrio: Esta parte consiste en la lectura e interpretación de los datos que nos ofrece la Unidad de Medición Inercial (IMU) para conseguir que el robot se mantenga horizontalmente en todo momento utilizando un control PID y se ha desarrollado junto al compañero, Anartz Recalde. Las otras dos partes están pensadas con el objetivo de darle más personalidad al proyecto individual de cada uno. Control remoto vía Bluetooth: Con esta parte lo que se pretende es controlar el robot remotamente mediante el Bluetooth y ha sido desarrollada únicamente por mí. Uso de los encoders de los motores para manejar el robot: Esta parte ha sido totalmente desarrollada por Anartz Recalde, y consiste en hacer uso de los encoders de los motores e interpretar los datos que proporcionan para sacar distintos datos como la distancia recorrida o la velocidad. De esta manera, intentará conseguir que el robot en todo momento se mantenga en la misma posición, es decir si alguna fuerza externa al robot hace que el robot se mueva, éste se tiene que situar en la misma posición en la que estaba antes de que se le hubiera ejercido dicha fuerza externa. Por lo tanto, este proyecto consiste en construir un robot balancín, bastante similar a un Segway pero en una escala más pequeña, conseguir que se mantenga en equilibrio y manejarlo por control remoto mediante uso del Bluetooth.

Determinantes à receptividade ao bluetooth marketing pelo consumidor português

Dissertação de Mestrado apresentada ao Instituto Superior de Contabilidade e Administração do Porto para a obtenção do grau de Mestre em Marketing Digital, sob orientação do Mestre Paulo Gonçalves e da Doutora Madalena Vilas Boas Esta versão não contém as críticas e sugestões dos elementos do júri

The Development of an Internal Testing Process for a Bluetooth Product

BlueGiga Technologies on uusi Bluetooth -teknologiaa soveltava pk-yritys. Yrityksen tuotekehitysprosessia täydentämään tarvittiin testausprosessi. Testausprosessin luominen oli haastavaa, koska Bluetooth -teknologia on uutta ja yritys on vielä nuori. Lisäksi se integroi kovo- ja ohjelmistokomponentteja tuotteissaan. Testaus aloitettiin evaluoimalla standardinmukaista tapaa dokumentoida testit. Tämän jälkeen tutkittiin BlueGigan ohjelmistokehitysprosessin suhdetta olemassa oleviin ohjelmistokehitysprosesseihin. Samanaikaisesti perehdyttiin Bluetooth -kvalifikaation testaukselle asettamiin vaatimuksiin. Tämän seurauksena TTCN:ää kokeiltiin helppolukuisen testitapauksen määrittelyssä. Käyttötapauksiin perustuvan testauksen sopivuutta Wireless Remote Access Platform:in (WRAP) testaamiseen arvioitiin kokeilemalla sitä Man-to-Machine -käyttötapauksen testaamisessa. Yllämainittujen tehtävien aikana kerätyn tiedon ja hankittujen kokemusten pohjalta laadittiin testausprosessi, joka kattaa yksikkö-, integraatio- ja järjestelmätason testauksen. Painopiste on järjestelmätason testauksessa. Prosessi määrittelee myös vastuuhenkilön tai -henkilöt eri testaustasoille.

Simple Low-cost Planar Antenna for Indoor Communication under the Bluetooth Protocol

A single-feed rectangular-ring microstrip antenna is proposed for indoor communication under the Bluetooth protocol. The dimensions of the antenna together with the location of the feed point are optimized through field simulations in order to cover the Bluetooth bandwidth and to avoid linear polarization. The performance and the efficiency of the antenna are illustrated in a real indoor environment

A new microstrip patch antenna for mobile communications and bluetooth applications

compact multihand planar octagonal-shaped microstrip antenna simultaneously suitable for mobile communication and blue tooth application is presented. The antenna provides sufficient isolation benveen the two operating bands and an area reduction of -29 % with respect to a circular patch operating in the same band

A Privacy Conscious Bluetooth Infrastructure for Location Aware Computing

We present a low cost and easily deployed infrastructure for location aware computing that is built using standard Bluetooth® technologies and personal computers. Mobile devices are able to determine their location to room-level granularity with existing bluetooth technology, and to even greater resolution with the use of the recently adopted bluetooth 1.2 specification, all while maintaining complete anonymity. Various techniques for improving the speed and resolution of the system are described, along with their tradeoffs in privacy. The system is trivial to implement on a large scale – our network covering 5,000 square meters was deployed by a single student over the course of a few days at a cost of less than US$1,000.

Bluetooth Cameras / Phones

Getting images from your mobile phone is best done using bluetooth, remember the image quality on these phones will not be high and you may find you can only print very small images, however camera phones are great for ease of use and look fine on screen.