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The limited power supply of wireless sensor nodes due to remote deployment inhibits the potential of these nodes. Batteries require periodic replacement, and it is impractical to replace each battery, especially when there are numerous nodes. In order to solve this issue, energy harvesters are proposed to supply the required power. Solar energy is chosen to be the energy source because of its abundance...
We propose a business model to compute the monthly subscription fee for users served by an innovative 5G network architecture that is designed to serve rural zones. We consider two possible options to deploy the 5G cells. In the first case, the connectivity is provided by means of small cells mounted on top of Unmanned Aerial Vehicles (UAVs). In the second case, large cells, covering wider portions...
Provided by Google, Eddystone standard consists of a beacon technology, open-source format, unidirectional and proximity-based Bluetooth® Low Energy (BLE) standard. Eddystone can support multiple different payloads, portable for IOS and Android with a ranging of approximately 50 meters. This paper analyses different metrics of a Verilog digital logical implementation of a Google Eddystone...
The objective of this work is the optimization of a controlled electric vehicle (EV) strategy under a centralized architecture, considering a medium voltage electrical network. The method developed consists of a Particle Swarm Optimization, which determines the time available to charger each EV, segmentation of nodes of the network and their respective charging times, considering as constraints the...
Telecommunications networks have been transitioning from a centralized to distributed architecture. With Fiber extending deeper into the wireline network and Small Cells becoming a more prevalent means for targeting hard-to-reach subscribers, there has been significant growth in the number of network elements located far from the central switching office. The sheer quantity of network devices increases...
Load balancing and energy conservation techniques are one of the important constraints in the design of in wireless sensor network (WSN). Usually, clustering technique helps the network in the minimum utilization of energy that results in enhancing network lifetime. Moreover, various nodes in the multihop network that are near to the base station drain their battery very quickly thus result in creating...
DC distribution is emerging as a solution for data centers, however the optimal system architectures have not been established in the industry. This paper first reviews the most recent studies, products and activities of DC distribution in data centers. A hybrid AC and DC distribution architecture is introduced by using both 415V AC and 380V DC together to achieve the data center reliability requirements...
At three key sporting venues of the RIO 2016 Olympic Games, an innovative remote powering solution was used to deliver power from a central source to Remote Radio Units (RRUs) located on cell towers. The solution effectively powered the RRUs from a centralized source of DC power while providing battery backup protection. This paper describes the powering challenges faced by the Wireless Service Provider...
In the mobile internet era, location-based services have been widely used in mobile applications for delivering novel services to end-users. As battery technologies have long been the bottleneck holding back the development of mobile applications, a large body of research has focused on saving energy. This paper proposes an adaptive middleware architecture for mobile applications using location-based...
The paper presents the application of the RFID technology in the international system of the European Union (EU) border control. The proposed architecture consists of computerized portable units (equipped with specialized devices for data acquisition) carried by border officers and the server cloud infrastructure. Among other details of the proposed system (such as QR codes or images of people trying...
The high combined power and energy density of lithium-ion batteries give them great potential for being used as the prime power source for several future naval shipboard pulsed power applications. To meet the power and energy requirements, multiple lithium-ion cells will need to be connected in series and parallel. The number of cells needed will depend on the voltage, capacity, and current limit...
The charging power supply for batteries may be variable under many circumstances, e.g., when using solar panels or air-driven generators as the energy source. The mismatch between the voltages of the power supply and the battery may cause significant charging inefficiency. In this paper, we use reconfigurable batteries to solve this voltage mismatch problem. We develop algorithms to dynamically decide...
This paper presents a cyber energy system design for electric vehicle applications. The aim is to show more autonomy with superior efficiency of electric vehicles. In this paper, we have used four main energy sources: battery, super capacitor, fuel cell and solar panel. Moreover, we use in this architecture a low voltage 12V battery to supply the accessories in the vehicle. This battery can be recharged...
The aging population is putting increasing pressure on health care systems in many developed countries, and maintaining quality of care while controlling costs becomes a major issue that needs to be addressed. With platforms now available at 2,000 $US, telepresence robots are one potential solution to provide remote care services to elders living in their homes. However, they need improved capabilities...
To conduct studies related to our planet and its atmosphere at high altitudes above 100 km from the ground requires to overcome great challenges. These studies can include meteorological, geographical and astrophysical missions. In this paper, we designed a high altitude unmanned semi-autonomous probe with helium gas balloon for general purpose near Earth space studies. Also hardware architecture...
Since the adoption of plug-in electric vehicles (PEVs) is constantly increasing, in the coming years electrical distribution networks will face the problem of accommodating for massive and unpredictable extra loads with diverse operating patterns. In this paper, we propose a semi-decentralized architecture to control the charging process of a fleet of PEVs. To study the impact on a low voltage (LV)...
This paper proposes an Internet of Things (IoT)-enabled multiagent system (MAS) for residential DC microgrids (RDCMG). The proposed MAS consisting of smart home agents (SHAs) aims to cooperate each other to alleviate the peak load of the RDCMG and to minimize the electricity costs for smart homes. These are achieved by agent utility functions and the best operating time algorithm (BOT) in the MAS...
The role of energy in wireless sensor networks (WSN) becomes very important when network is unattended and it is not possible to recharge sensor node's battery in the sensing region many times. Due to this limited battery energy of sensor nodes it becomes a challenge for WSN to maintain proper functioning for a long time. So for the enhancement in network lifetime of the WSN, here we propose a modified...
The combination of Battery-Ultracapacitor, as a Hybrid Energy Storage System (HESS) controlled with a bidirectional buck-boost converter for light electric vehicles is presented in this paper. By combining these two energy storage elements an efficient supply system can be obtained. A bidirectional Buck-Boost converter is used to control the energy transfer between the elements of the HESS and the...
Battery storage is increasingly important for grid-level services such as frequency regulation, load following, and peak-shaving. The management of a large number of batteries presents a control challenge: How can we solve the apparently combinatorial problem of coordinating a large number of batteries with discrete, and possibly slow rates of charge/discharge? The control solution must respect battery...
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