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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Bluetooth-implementation för Netbiter EC350

Alfredsson, Erika, Bengtsson, Matilda January 2014 (has links)
In industries today the demand for reading the state of industrial equipment and thus prevent machine breakdown, is increasing. The company HMS Industrial Networks AB has a product on the market, Netbiter EC350 that is used to read sensors and thus find out the condition of industrial equipment. By reporting scanned data to users through a cloud service, users can keep track of their equipment.   When developing Netbiter EC350 a slot was made for a Bluetooth module to offer clients a wireless reading in future developments. In this project a prototype was made to show how this Bluetooth communication can be implemented.   The goal of the project was to create a Bluetooth communication between a Bluetooth sensor and Netbiter EC350. A user interface was made to allow the user to read sensor values.   The result of the project shows how a Bluetooth communication can be implemented to read sensors wireless and therefore it fulfills its purpose and goal. The user can find connectable Bluetooth devices, connect to a device and read measured values through a user interface.   The prototype demonstrates how a Bluetooth communication with a Netbiter EC350 can be implemented and the project is therefore considered to be a good basis for future development.
32

The Device Discovery in Bluetooth Scatternet Formation Algorithm

Jedda, Ahmed January 2009 (has links)
The Bluetooth Scatternet Formation (BSF) problem can be defined as the problem of forming wireless networks of Bluetooth devices in an efficient manner. A number of restrictions imposed by the Bluetooth specifications make the BSF problem challenging and unique. Many interesting solution algorithms have been proposed in the literature to solve this problem. In this thesis, we investigate the BSF problem. We concentrate on problems introduced by the procedures of device discovery of the Bluetooth specifications and on the different solutions used by BSF algorithms to deal with these problems. We study also in this thesis problems introduced by the specifications of link establishment in Bluetooth due to their close interaction with the device discovery specifications. We survey and categorize the different device discovery techniques used by BSF algorithms. This categorization is then used as a basis to identify the different theoretical computational models used to study BSF algorithms. We argue, in this thesis, that the currently available models for Bluetooth wireless networks do not model adequately, in most cases, the complexities of the Bluetooth specifications and we show that these models were oversimplified in many cases. A general computational model will be useful as a starting point to design BSF algorithms and to compare the different and numerous BSF algorithms – especially in term of the execution time efficiency. In this thesis, we provide a set of suggestions that will help in the creation of such model. We survey a number of studies that examined in more depth the specifications of device discovery in Bluetooth. We survey also other studies that attempted to simplify the Bluetooth network model, either by suggesting modifications on the Bluetooth specifications or by the use of communication technologies other than Bluetooth. Finally, we present some experiments accompanied with analyzes to show the complexities of the Bluetooth specifications and their sensitivity to minor changes (whether in the specifications or in their implementation).
33

Exploiting Bluetooth Low Energy Pairing Vulnerability in Telemedicine

Zegeye, Wondimu K. 10 1900 (has links)
ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / Telemetry has potentially large contributions to future medical applications. In the past decade wireless devices have invaded the medical area with a wide range of capability as components of a wireless personal area network (WPAN) and Wireless Body Area Network (WBAN). These applications in medical telemetry are not only improving the quality of life of patients and doctor-patient efficiency, but also enabling medical personnel to monitor patients remotely and give them timely health information, reminders, and support-potentially extending the reach of health care by making it available anywhere, anytime. This paper exploits the pairing vulnerability in Bluetooth Low energy (Bluetooth Smart) for HealthCare devices used in medical telemetry applications and demonstrates the key role security plays in telemetry.
34

Feasibility of a Bluetooth Based Structural Health Monitoring Telemetry System

Uchil, Vilas, Kosbar, Kurt 10 1900 (has links)
International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Bluetooth standard is intended to provide short-range (10-100 meter) wireless connectivity between mobile and desktop devices. It was developed as a replacement for short cables, and has the ability to form ad-hoc networks. This paper explores the feasibility of using Bluetooth devices for structural health monitoring telemetry applications. We describe the configuration of a small ad-hoc network using Bluetooth modules and micro-controllers to simulate a telemetry application and thus evaluate the general framework of distributed, reliable, and secure, wireless communications required for telemetry.
35

Design and implementation of a demonstrator for a Bluetooth Low Energy based fleet service system for hand-held gardening and forestry products

Amanda, Nordhamn January 2016 (has links)
Today, large companies specialized in forestry or park maintenance may own very large machine fleets consisting of hundreds of trimmers, chainsaws and brush cutters. Husqvarna Group, whose core business lies within high-end forestry and gardening products, has noticed that such companies tend to buy cheaper, low quality forestry and gardening products. The reason is thought to be that the companies lack a proper overview of the service status and utilization levels of their machines, leading to insufficient service, causing machines to break prematurely and making it hard to motivate investments in more expensive products. Hence, the companies usually adopt a consumerist approach, and buy cheaper products that are thrown away upon breaking. To make their products more attractive to machine park owners, Husqvarna want to explore the area of Internet of Things and equip their machines with sensing and communication capabilities. Collected data could be used to provide an overview of machine usage and service requirements to the machine parks owners, and could make it easier for machine park owners to dimension their machine fleet. In addition to this, a machine monitoring system where specific operator behavior can be tracked could enable identification of operators who consistently mistreat their machines by, for example, running the machine engine at non-optimal rotation speeds. In this master's thesis, a demonstrator of the working principle of a Bluetooth Low Energy based Fleet Service System is designed and implemented, complete with an evaluation of if received signal strength indicator (RSSI) is a good enough distance estimator to determine which operator operates a certain machine.  Experiments carried out indicate that while RSSI is not a good estimator of distance, it could be used to determine the operator in closest proximity given that operators are not allowed to work closer than within a 10 m radius of each other.
36

Concepção de interfaces de utilizador genéricas recorrendo ao uso de tecnologia rádio bluetooth

Bluemel, Paulo Carneiro Pacheco January 2010 (has links)
Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores (Major Telecomunicações). Faculdade de Engenharia. Universidade do Porto. 2010
37

A Privacy Conscious Bluetooth Infrastructure for Location Aware Computing

Huang, Albert, Rudolph, Larry 01 1900 (has links)
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. / Singapore-MIT Alliance (SMA)
38

BLUETOOTH / ZIGBEE NETWORKS AND DEVELOPMENT OF PORTABLE 6LOWPAN STACK

Gaddam, Nagavenkat kumar January 2013 (has links)
Wireless sensor networks (WSN’s) are becoming popular in military and civilian applications such as surveillance, monitoring, disaster recovery, home automation and many others. Prolonged network lifetime, scalability, node mobility and load balancing are important requirements for many WSN applications. This thesis work presents the investigation of scalability and power consumption in different wireless module such as Bluetooth, Zigbee to deploy in the large scale wireless sensor network application by simulation the network topologies, analysis and comparison of both the wireless module in OPNET and running the WSN application using Zigbee in Real environment. In order to increase the scalability and reduce the power consumption we use the Internet protocol version 6 (IPv6) over Low Power Wireless Personal Area Network (6LoWPAN), we worked on the programming of the 6LoWPAN protocol stack and analysis of the results using the perytons network protocol analyzer.
39

Coexistence Mechanisms for Bluetooth SCO Link and IEEE 802.11 WLAN

Chiang, Shao-Hsien 17 January 2007 (has links)
Wireless network systems, such as IEEE 802.11 wireless local area networks (WLANs) and Bluetooth, are increasingly constructed in our surrounding environment. Although devices running these two wireless systems operate with different technologies, they both work in the 2.4 GHz ISM (Industrial, Scientific, and Medical) band, and therefore lead to interference. The problem of Bluetooth interfering with a WLAN is particularly serious with a Bluetooth device located in an area with more than one overlapping WLAN. Interference is not a significant problem if it only degrades data throughput. However, it is unacceptable if it causes disconnection of the Bluetooth SCO link (i.e., voice connection). This study presents mechanisms to sustain the quality of Bluetooth SCO link, under the interference, with only at a minor cost of WLAN¡¦s data throughput.
40

RF Specification Test and Related Mixed- Signal IC Design in Bluetooth

Huang, Chien-Hsiang 26 July 2002 (has links)
In the first part of this thesis, RF specifications of the CSR Bluetooth module were tested rigorously by means of proper equipment setup and manipulation. The tested parameters in the transmitter include output power, spectrum and modulation characteristics. The tested parameters in the receiver include sensitivity and received signal strength indicator. The second part of this thesis was mainly focused on some mixed-signal integrated-circuit designs that can be generally applied to the Bluetooth RF front-end. The design examples include the phase frequency detector, charge pump, and frequency divider in the applications of phase-locked loop. A transconductance-capacitor low-pass filter with tunable cut-off frequencies was also designed to suppress the spurious signals from RF front-end into baseband.

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