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Renewable biofuels are primary research targets as sources for sustainable, net-zero-carbon, alternative energy. In this vein, we are developing an imaging device for whole plant measurement of vascular and metabolic processes. It will provide new information geared towards increasing the output of biofuels and the resilience of plant feedstock. Single Photon Emission Computer Tomography (SPECT) is...
Inexpensive wireless sensors developed under a DOE Building Technology Program (BTP) project have proven to be robust enough for harsher environmental and RF interference-laden locations found in industrial settings. Coupling with Alcoa-ORNL activities pertaining to optimization of energy utilization at Alcoa facilities these sensors, and an associated ORNL-architected instrumentation network fabric,...
An innovative Ultrawide Dynamic Range Gas Flow Sensor has been developed and demonstrated under a NAVAIR-sponsored program. The meter uses acoustic pulse trains to measure gas flows through pipes or tubes in a wide range of configurations and conditions while maintaining a useable dynamic range exceeding 5000∶1. The demonstrated performance is at least an order of magnitude better than conventional...
This paper presents a new embodiment of SansEC (Sans electric connections) sensor for tire safety monitoring application. The sensor is capable of measuring multiple unrelated physical quantities including temperature, damage, and rotation rate. The sensor is composed of an open-circuit conductive pattern having temperature sensitive dielectric material in its electric field. Temperature and sensor...
FPGAs have changed the way we collect data and implement control systems. With the processing power they contain, we can easily turn data into information by performing in-line processing at very high acquisition rates. This allows engineers and scientists to test and develop very fast control algoritm loop rates. Join us for this presentation that looks at the applications where FPGAs are getting...
Vehicle detection has been dominated for several decades by magneto-inductive sensors including inductive loop sensors. The detection electronics estimate the frequency of an oscillator that changes dependent upon the inductance of the sensor. The algorithms used to estimate the sensor inductance and to detect vehicles are proprietary and vary between manufacturers. This has limited research in this...
In this paper, we describe a simulation study of the impact of topology control and traffic models on the performance of Mobile Ad Hoc Wireless Network routing protocol in a dynamic changing environment. Simulation results shows that Constant Bit Rate (CBR) outperformed Transmission Control Protocol (TCP) in all metrics chosen, except for TCP which was able to handle packet delivery in large topologies...
Highway queue warning provides early congestion estimation to motorists and reduces potential delay by allowing them to either change lanes or take alternate routes. It can facilitate effective highway operations as well as lower energy consumption and greenhouse gas emission by preventing traffic from congestion. Quality of the estimation depends heavily on real-time traffic data. This paper proposes...
This paper reviews the comparison of a newly developed ultrasonic gas flow meter with a standard hot wire thermo-anemometer flow meter. The flow meters are compared utilizing a wind tunnel to induce flow through the meters. The ultrasonic gas flow was been developed and demonstrated under a NAVAIR-sponsored program. The ultrasonic meter uses acoustic pulse trains to measure gas flows through pipes...
Optical and electronic phenomena associated with excitation of plasmons in metal-dielectric interfaces of nanoparticles and nanostructures are central to many emerging applications. We present ongoing efforts in utilizing excitation and decay energy of optically excited surface plasmons toward applications in solar energy conversion and biomedical investigations.
Nuclear methods based on neutron and gamma-ray detection have been used for decades in the well-logging industry, including both oil and gas logging, for characterization purposes. Current well-logging tools operate in the range of 150 to 175°C. For geothermal logging applications, however, operations at higher temperatures are needed. In this paper, the results for neutron and photon detector measurements...
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