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The integration of knowledge representation and reasoning techniques (originally devised for the Semantic Web) in most common Wireless Sensor Networks (WSNs) protocols can allow to reach higher levels of autonomicity w.r.t. classic network architectures that basically provide only simplistic discovery capabilities. This paper presents a complete Semantic Sensor Network (SSN) framework, supporting...
The Delay Tolerant Networks (DTN) approach is considered the best strategy to address the specific issues of the VANETs, namely high mobility, variable node density or frequent radio obstacles. Several protocols have been proposed for DTNs, being the epidemic routing (and variations of it) the most representative protocol. Nevertheless, the availability of navigation systems, thanks to which each...
Vehicular Sensor Networks (VSNs) are a new emerging technology where sensor devices are deployed in the road side and in the vehicles to sense and transmit information to users, providing safe, efficient and comfort for roads users. One of the VSNs challenges is how to deal with dynamic data collection. To achieve this, an efficient collaboration between sensors and vehicles is required. This paper...
Using vehicles as sensors for traffic and environment monitoring is a new paradigm that opens the way to worthwhile applications. Data collected on board are usually delivered through the cellular network, with the consequent overloading risk. This paper focuses on the alternative adoption of short range vehicle-to-vehicle (V2V) and vehicle-to-roadside (V2R) communications, with particular reference...
Vehicular Ad Hoc Network (VANET) is a Mobile Ad Hoc Network (MANET), and it can improve road safety and optimize road traffic. VANET has two forms: Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communication. The V2V communication can be used to transmit information about traffic conditions and / or vehicle accidents. This paper provides an applicative solution for V2V communication...
This paper focuses on the routing protocol for driving safety that vehicle collects state message from roadside sensors in VANET-WSN. Routing Protocol for Low Power and Lossy Networks (RPL), a tree-based routing protocol, adapts naturally to our routing requirement. But RPL is designed for static wireless sensor network, so we need to modify RPL to fit in with high dynamic topology of VANET-WSN. For...
Traffic congestion has been a crucial problem nowadays due to the limited traffic resources, which lead to an urgent need for the optimization of current transportation scheduling. In this paper, a real-time traffic-responsive strategy has been proposed, that the timings and periods of traffic signals are optimized adapt to the dynamically changing environment. Simulations also have been conducted...
This paper presents a new wireless platform designed for an integrated traffic monitoring system based on combined Lagrangian (mobile) and Eulerian (fixed) sensing. The sensor platform is built around a 32-bit ARM Cortex M4 micro-controller and a 2.4GHz 802.15.4 ISM compliant radio module, and can be interfaced with fixed traffic sensors, or receive data from vehicle transponders. The platform is...
The paper presents a prototype radio network aiding the visually impaired in using the public transport. The main purpose of the network is to provide accurate and reliable location information as well as to enable access to location related context information. The data from radio nodes are used to facilitate the navigation in urban and indoor areas. Keeping up the connection with dedicated system...
Due to recent advances in communications and computing devices, vehicular networks are attracting a lot of research attention. In a vehicular ad hoc network the nodes are vehicles which communicate among themselves by using short-range wireless communications. These vehicles can store and share certain data (e.g., regarding the surrounding traffic and environment) which can be used, for example, to...
Vehicular travel is gaining importance everywhere, particularly in large urban areas. The current technologies that support vehicular travel like wired sensors, inductive loops, surveillance camera etc., are expensive and also require high maintenance cost. Further the accuracy of these devices also depends on environment conditions. The typical traditional approaches attempt to optimize traffic lights...
This paper presents development of an autonomous flying robot (unmanned aerial vehicle) and its verification via flight control experiment. The autonomous flying robot has a global positioning system (GPS) sensor to control its altitude and also a wireless camera to gather visual information from the air. First, we construct a longitudinal model of the autonomous flying robot to design a stable controller...
This paper describes a ZigBee based wireless system to assists traffic flow on arterial urban roads. Real-time simulation in laboratory environment is conducted to determine the traffic throughput to avoid possible congestions or ease existing congestions. Random numbers are generated to mimic approaching traffic, and this information is shared by a ZigBee-based real-time wirelessly network. Wireless...
Monitoring the neurophysiological activities of driver in an operational environment poses a severe measurement challenge using a current laboratory-oriented biosensor technology. The aims of this research are to 1) introduce a dry and wireless EEG system used for conveniently recording EEG signals from forehead regions, 2) propose an effective system for processing EEG recordings and translating...
Mobile vehicles equipped with wireless energy transmission technology can recharge sensor nodes over the air. When to recharge which nodes, and in what order, critically impact the network performance. So far only a few works have studied the recharging policy for a single mobile vehicle. In this paper, we study how to coordinate the recharging activities of multiple mobile vehicles, which provide...
This paper is following the development of the PhD research of Optimizing Real-Time Applications for Marine Operations Using Modern Modelling and Simulation Methods and presents the major challenges in designing simulation scenarios for offshore exploration constructions models and furthermore, some sensor deployment methods using remote operated vehicles (ROV).
The ubiquitous nature of Bluetooth equipped devices has made it opportunistic to scavenge information that can be repurposed for applications other than initially intended. One such opportunity is in vehicular traffic monitoring, whereby sampling of Bluetooth radios serve a proxies for vehicles and consequently density and flow. This paper discusses a complete system being developed at the University...
Received Signal Strength (RSS) propagation measurements were made in a vehicular environment (In-Car) at 433/868/915/2400 MHz utilizing RF equipment and Matlab simulations. Path loss and Path loss Exponent values were deduced from the measured RSS from various positions in a Multi Utility Vehicle (MUV). The research work presented in this paper predominately targets characterizing radio link for Wireless...
Wireless energy transfer is a promising technology to fundamentally address energy and lifetime problems in a wireless sensor network (WSN). On the other hand, it has been well recognized that a mobile base station has significant advantages over a static one. In this paper, we study the interesting problem of co-locating the mobile base station on the wireless charging vehicle (WCV). The goal is...
The strength of sensor networks is quite vast when it is applied for collecting physical data in real time and storing for further analysis. The impossible measurements by conventional methods have now become possible by using this technology. Air quality which is one of the most important factors for the sustainable development and is one of the challenging areas researchers dealt with long time...
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