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Among power generation, transmission and use, distribution is an extremely important link. The distribution system includes a transformer and a variety of high and low voltage electrical equipment, the circuit breaker is a large amount of electrical appliances. The circuit breaker can be used to distribute electric energy, the asynchronous motor is not frequently started and the power line and motor...
The recent enhancement of sensor devices, such as the Micro-Electro Mechanical Devices (MEMs) used for information collection and dissemination, has led to the emergence of the Internet of Things (IoT). This new paradigm overlaps with many research area such as the Wireless Sensor Networks (WSNs) where sensor nodes are deployed over an area to perform local computations based on information gathered...
This paper addresses the replacement of enhancement mode Si IGBTs with depletion mode SiC vertical junction field effect transistors (VJFETs) in a commercial motor drive in current production. A Yaskawa A1000 CIMR-AU4A0088FAA motor drive was analyzed and found to have reliability and safety features that can be exploited to introduce normally on SiC transistors with no loss in safety or reliability...
The implementation of the substation automation system of the 69 kV S/S Azogues 2 was conceived as a multi-vendor IEC 61850 solution using equipment from different manufacturers. Unexpectedly, the integration that should have been relatively easy became a complicated task and it was shown during the execution of the project that the IEC 61850 standard is not applied equally by all the vendors causing...
Many reports predicted that the number of connected IoT (Internet of Things) devices will reach to billions in the next several years, accordingly, how to securely and effectively manage, monitor and control them becomes a critical problem. In conventional IoT solutions, direct SSL/TLS based HTTP connections to IoT devices with high overhead are required and encryption is not considered due to low...
Nanoelectromechanical relays show the potential to beat existing CMOS technology in energy efficient computing, but fail to compete in device density [1]. A novel relay is presented as a highly scalable solution that can be used for non-volatile memory. This relay conducts through an anchorless shuttle, actuated by a combination of piezoelectric and electrostatic force, and held in contact through...
Underwater sensor networks are bounded by data sensing, transmitting, and forwarding limitations. The transmitting of large volumes of data can require a large amount of time and power. This has led researchers to focus on the new technology of underwater computing systems, in which information is extracted under the water using embedded processors via data mining and/or data compression. In this...
Asynchronous logic and power gating are promising techniques for low duty cycle applications which need maximal energy efficiency, which are becoming more common-place with the popularity of wireless and embedded systems. This paper investigates the potential use of Nano/Micro- Electro- Mechanical (N/MEM) switches as the means of power gating asynchronous computation. A systematic optimization of...
IoT network requires global reachability, mobility support, richer communication patterns and resource efficiency. To address these needs, MF-IoT has been proposed as an extension of MobilityFirst which allows applications even in the low-end IoT devices to use the aforementioned network capabilities.This demo uses surveillance camera as an example to show the feasibility and efficiency of MF-IoT...
Although CMOS technology scaling combined with efficient frequency and voltage scaling strategies offer femto Joule per logic operation, energy consumption remains orders of magnitude above the limit given by information theory. To alleviate this inherent energy dissipation, this paper introduces a new paradigm: the adiabatic capacitive logic. Based on adiabatic operation, the principle also relies...
Cooperative forwarding has shown a substantial network performance improvement compared to traditional routing in multi-hop wireless networks. To further enhance the system throughput, especially in the presence of highly congested multiple cross traffic flows, a promising way is to incorporate the multi-radio multi-channel (MRMC) capability into cooperative forwarding. However, it has been said that...
MmWave meshed network is a promising architecture for cost-efficient wireless backhaul of millimeter-wave overlay heterogeneous network (mmWave overlay HetNet). As user distribution in practice is time-variant and spatially non-uniform, mmWave meshed backhaul should be controlled adaptively. This paper proposes a novel method to control mmWave meshed backhaul for efficient operation of mmWave overlay...
In order to efficiently transfer data, rate control and route scheduling are critical in deep space scenarios. The major challenge is the long-haul and intermittent links, which easily leads to low link utilization. However, Traditional backpressure algorithms can not acquire accurate queue information and maintain long queues at each node. Therefore, we devise a system model for deep space networks,...
Space utilization are important elements for a smart city to determine how well public space are being utilized. Such information could also provide valuable feedback to the urban developer on what are the factors that impact space utilization. The spatial and temporal information for space utilization can be studied and further analyzed to generate insights about that particular space. In our research...
Rescue teams require information about victims in need of help rapidly to improve survival rate at the time of disaster. Emergency Rescue Information Sharing System gathers and provides the information with a framework called METHANE in addition to efficient wireless link's selection using OpenFlow. However, it is difficult for those who rescue the victims except for the rescue teams to recognize...
This paper explains the architecture and design of Arduino based car parking system. Authorization of driver or user is the basic rule used to park a vehicle in a parking place. Authorization card will be given to each user, which carries the vehicle number or other details. If the user is authorized and space is available in the parking, then the parking gate will open and the user is allowed to...
In the recent past there has been much research and development on cloud based computing. While cloud computing provides huge opportunities, it also imposes several challenges. One of the challenges that current data network operators and future 5G network are foreseeing is huge increase in data traffic. To fulfill such exponential data traffic growth, along with other user expectation, requires multiple...
Sub-50 mV operation of nano-electro-mechanical relays is demonstrated for the first time, enabled by an anti-stiction molecular coating. Specifically, a self-assembled monolayer of perfluorodecyltriethoxysilane (PFDTES) is shown to be effective for reducing the switching hysteresis voltage, without dramatically increasing its ON-state resistance, enabling stable device operation at very low voltages.
The formula E = Pt still hold true as we forge ahead in our unending quest to extend power lifetime in e-Health wireless sensors. Our research work proposes predictive MAC manipulation and intelligent node clustering with associated algorithms to further lower the energy consumption of e-Health devices equipped with wireless sensors. Predictive manipulation of MAC involves powering on and off the...
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