Search results for "bluetooth"
showing 10 items of 52 documents
A New FEC Scheme for Real-time Transmission of High Definition Video over IP Network
2007
Increasing the applicability of ubiquitous computing, minimizing energy consumption and hardware cost are mandatory in real world applications. In this paper we present our platform prototype for ubiquitous computing, which has been implemented based on commercial Bluetooth off-the-shelf components. It allows every object to be augmented with processing and communication capabilities in order to make them "smart". We validate our proposal by evaluating the trade-off between power consumption and performance of the experimental prototype.
Building a research prototype to provide pervasive services in hospitals
2008
Research into the nature of pervasive computing has now been around for more than a decade. Nowadays pervasive applications exploit mobile wireless communication technologies to interconnect computing devices along with various sensing technologies, setting up a new kind of intelligent environment where applications can transparently search and use services without userspsila intervention. However, there are few examples of real world deployment of pervasive computing moving out from academic laboratories into our everyday life. We present BlueHospital - a research prototype that provides context-aware information and location based services to clinicians in hospitalspsila recovery wards. T…
Software Requirements for Ubiquitous Ad Hoc Mobile Networks: An Example of a Bluetooth Application
2009
In contrast with the simple and elegant concept of global computing, also called ubiquitous computing - where daily life objects get now computing capacity and interact among them to provide a wide range of services to users - a major difficulty is arising with the software engineering process to develop applications for these devices. This article discusses the additional parameters that should be taken into account when designing and developing software for ubiquitous devices in ad-hoc networks. In these networks the mobility of the devices could increase the complexity of the requirements to be considered. As a case study, we present a Bluetooth application that has been developed to ful…
A Java-based Wrapper for Wireless Communications
2008
The increasing number of new applications for mobile devices in pervasive environments, do not cope with changes in the wireless communications. Developers of such applications have to deal with problems arising from the available wireless connections in the given environment. A middleware is a solution that allows to overcome some of these problems. It provides to the applications a set of functions that facilitate their development. In this paper we present a Java-based communication wrapper, called SmartTraffic, which allows programmers to seamlessly use TCP or UDP protocols over Bluetooth or any IP-based wireless network. Developers can use SmartTraffic within their Java applications, t…
Bluetooth throughput measures for cardiomyocyte extracellular signal telemetry
2006
In this contribution the suitability of the Bluetooth transmission system is analyzed for its application to the realtime transmission of cardiac signals captured by micro-electrode array sensors. The required data rates for this type of cardiac signals are calculated to be 180 kbps for every single micro- electrode. The mean throughput value varies with the selected packet size: for packet sizes less than 1000 bytes the mean throughput is smaller than 180 kbps while for packet sizes greater than 1000 bytes the mean throughput saturates at around 230 kbps. This mean throughput value is guaranteed for over 80% of the time. Compression algorithms running on the sensor array allow the reductio…
An Energy-Autonomous Wireless Sensor with Simultaneous Energy Harvesting and Ambient Light Sensing
2021
Wireless sensor nodes (WSNs) are generally powered by batteries, which results in a substantial limitation to the places where the nodes can be installed, to the maximum number of deployable devices, and to the node lifetime. To meet the demand for Internet-of-Things (IoT) applications that require a large number of maintenance-free, low cost, wireless sensor nodes, this paper proposes a wireless sensor platform with a single photovoltaic transducer that performs the dual role of harvesting energy and sensing ambient light. This dual use allows even smaller and cheaper nodes that do not require any form of supporting external power, with a reduced component count. The device implements off-…
A Battery-Free Wireless Smart Sensor platform with Bluetooth Low Energy Connectivity for Smart Agriculture
2022
Smart agriculture systems, which integrate sensors and data analysis into agricultural production processes, are increasingly proving an effective solution for reducing food production waste, yield production increase, and product quality improvement. In this context, this paper deals with a wireless sensors platform for humidity, temperature, and light detection that has the peculiarity to be self-powered and battery-free. The main advantage of the proposed solution is the elimination of maintenance interventions due to battery replacement. Therefore, the availability of install-and-forget sensors allows an easy diffusion for a capillary detection of plant health and growth parameters thro…
Aplicación de Sistemas Multiagentes para la obtención de matrices Origen-Destino dinámicas mediante el empleo de sensores Bluetooth adaptada al equip…
2015
Los primeros sistemas de gestión del tráfico se basaban en la instalación de elementos de sensorización, espiras magnéticas, que suministraban datos básicos de tráfico como son la intensidad y la velocidad, integradas en periodos predefinidos y clasificadas en varias categorías, además de la ocupación y la distancia entre vehículos. Estos datos básicos fueron utilizados para estimar otros parámetros como el nivel de servicio o el tiempo de viaje de cada tramo de la red sensorizada (Lindveld & Thijs, 1999). Además, aplicando una serie de algoritmos a estos datos se realizaba la detección de congestiones o incidentes (Collins et al., 1979). Sin embargo, la estimación del tiempo de viaje no si…
Mobiilimaksuteknologioiden vertailu mobiilimaksamisen hyväksymisen näkökulmasta
2013
Martikainen, Jaakko Mobiilimaksuteknologioiden vertailu mobiilimaksamisen hyväksymisen näkö-kulmasta Jyväskylä: Jyväskylän yliopisto, 2013, 43 s. Tietojärjestelmätiede, kandidaatintutkielma Ohjaaja(t): Seppänen, Ville Jotta käyttöönotettava uusi teknologia täyttäisi mahdollisimman hyvin kulutta-jien sille kohdistamat käytön vaatimukset, on valittavaa teknologiaa ja sen vaih-toehtoja tutkittava kuluttajan hyväksymisen näkökulmasta. Mobiilimaksutek-nologioiksi voidaan määritellä mobiilimaksamisen yhteydessä käytetyt langat-tomat viestintä- ja palveluteknologiat. Tutkielman päätavoitteena on selvittää, minkälaisia mobiilimaksuteknologioita mobiilimaksamisessa käytetään ja miten ne vertautuvat …