6,096 research outputs found

    Remote real-time monitoring of subsurface landfill gas migration

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    The cost of monitoring greenhouse gas emissions from landfill sites is of major concern for regulatory authorities. The current monitoring procedure is recognised as labour intensive, requiring agency inspectors to physically travel to perimeter borehole wells in rough terrain and manually measure gas concentration levels with expensive hand-held instrumentation. In this article we present a cost-effective and efficient system for remotely monitoring landfill subsurface migration of methane and carbon dioxide concentration levels. Based purely on an autonomous sensing architecture, the proposed sensing platform was capable of performing complex analytical measurements in situ and successfully communicating the data remotely to a cloud database. A web tool was developed to present the sensed data to relevant stakeholders. We report our experiences in deploying such an approach in the field over a period of approximately 16 months

    Energy challenges for ICT

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    The energy consumption from the expanding use of information and communications technology (ICT) is unsustainable with present drivers, and it will impact heavily on the future climate change. However, ICT devices have the potential to contribute signi - cantly to the reduction of CO2 emission and enhance resource e ciency in other sectors, e.g., transportation (through intelligent transportation and advanced driver assistance systems and self-driving vehicles), heating (through smart building control), and manu- facturing (through digital automation based on smart autonomous sensors). To address the energy sustainability of ICT and capture the full potential of ICT in resource e - ciency, a multidisciplinary ICT-energy community needs to be brought together cover- ing devices, microarchitectures, ultra large-scale integration (ULSI), high-performance computing (HPC), energy harvesting, energy storage, system design, embedded sys- tems, e cient electronics, static analysis, and computation. In this chapter, we introduce challenges and opportunities in this emerging eld and a common framework to strive towards energy-sustainable ICT

    Workshop sensing a changing world : proceedings workshop November 19-21, 2008

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    Special issue on green radio

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    A critical analysis of research potential, challenges and future directives in industrial wireless sensor networks

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    In recent years, Industrial Wireless Sensor Networks (IWSNs) have emerged as an important research theme with applications spanning a wide range of industries including automation, monitoring, process control, feedback systems and automotive. Wide scope of IWSNs applications ranging from small production units, large oil and gas industries to nuclear fission control, enables a fast-paced research in this field. Though IWSNs offer advantages of low cost, flexibility, scalability, self-healing, easy deployment and reformation, yet they pose certain limitations on available potential and introduce challenges on multiple fronts due to their susceptibility to highly complex and uncertain industrial environments. In this paper a detailed discussion on design objectives, challenges and solutions, for IWSNs, are presented. A careful evaluation of industrial systems, deadlines and possible hazards in industrial atmosphere are discussed. The paper also presents a thorough review of the existing standards and industrial protocols and gives a critical evaluation of potential of these standards and protocols along with a detailed discussion on available hardware platforms, specific industrial energy harvesting techniques and their capabilities. The paper lists main service providers for IWSNs solutions and gives insight of future trends and research gaps in the field of IWSNs

    Medium Access Control in Energy Harvesting - Wireless Sensor Networks

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    Paper Session I-A - Hands-off Farming in Space

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    This paper focuses on the mechanization of a biomass production system (BPS) in enclosed environments for space agriculture. It requires an intelligent computer for the autonomous adjustment of controlled elements and a robotic system for measurement of plant growth and harvest. This research is to develop and integrate a BPS framework that enables autonomy, monitoring, diagnosis, fault detection and correction, and production optimization. The key feature is an integrated health monitoring and production management and control system (IHPMCS) implemented with the robotic system. IHPMCS is an integrated algorithm integrated into an embedded computer that can process biomass production data in real-time based on measurements of production elements in the chamber. The concept proposed is to take the human expert out of the control loop and build his expertise into the computer to yield an autonomous BPS. This will provide an optimal and autonomous biomass production capability so that BPS can maximize the ability to grow plants and allow astronauts to be more involved in scientific or technical activities. This is a collaborative research between academia (University of Central Florida), industry (Dynamac), and government agency (NASA) at Kennedy Space Center
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