Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Nonintrusive"”.
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Advanced nonintrusive load monitoring system
… solutions for two long standing problems in nonintrusive power and diagnostic monitoring. First, a high-resolution, physically windowed sensor architecture that is well-suited for energy score-keeping and diagnostic applications will be discussed. The sensor can track a large-scale main …
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Improvements to the nonintrusive load monitor
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Development of nonintrusive flow field imaging diagnostics
Includes bibliographical references.
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Nonintrusive Load Monitoring for Verification and Diagnostics
Nonintrusive load monitoring (NILM) is a method of detecting the current energy consumption of a building, using a single set of sensors on the main building supply. This approach is in contrast to intrusive monitoring where end-use devices are sensed. Building on techniques of previous works, it …
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System identification techniques and modeling for nonintrusive load diagnostics
… new approach and implementation of pattern-based nonintrusive transient classification is presented. The classifier is nonintrusive in the sense that it uses aggregated measurements at a central location and does not require instrumentation of individual loads. The classifier implementation …
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A conjoint pattern recognition approach to nonintrusive load monitoring
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Development of new methods for nonintrusive induction motor energy efficiency estimation
… This PhD work presents some novel methods for nonintrusive efficiency estimation of induction motors operating on-site using limited motor terminal measurements and nameplate data. The first method is developed for induction motors operating on sinusoidal supply source (line-fed). The method …
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The Shipboard Automatic Watchstander (SAW) : utilization of Nonintrusive Load Monitoring for shipboard automation
… presents results from operational testing of Nonintrusive Load Monitoring (NILM) systems aboard active US Coast Guard units. Monitoring the ships' electrical system from centralized power distribution points, data collected by the NILMs provide information for: 1) human activity monitoring, 2) …
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Nonintrusive load disaggregation computer program to estimate the energy consumption of major end-uses in residential buildings
… and the related computer program for the nonintrusive load disaggregation of total-household electric load into its end-uses. The computer program estimates the energy consumption of individual electric appliances in a house based on the analysis of the current measured at the house-power …
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Experimental and Theoretical Investigations of Coherent Anti -Stokes Raman Scattering as a Nonintrusive Diagnostic for Gas -Phase Systems
The second portion of the work concerned the development of a theoretical model for electronic-resonance-enhanced CARS (ERE CARS) spectra of nitric oxide. This model incorporates the effects of the Raman resonance in conjunction with an electronic resonance to provide the first known theoretical …
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Resolution Tricks and Disaggregation Tools for Smart Power Metering
A nonintrusive load monitor (NILM) aims to solve the energy disaggregation problem by incorporating power system analysis, signal processing, and machine learning. This thesis addresses two problems present in state-of-the-art nonintrusive load monitoring research. First, the ability of existing …
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An Enhanced Signal Processing Toolbox for Electrical Energy Monitoring
A nonintrusive load monitor (NILM) aims to perform power system analysis with a minimally invasive sensor profile. A wealth of literature exists for load identification and energy disaggregation under ideal, healthy conditions. However, a significant value proposition of nonintrusive load …
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Electrical Monitoring of Electromechanical Systems
… observable changes in electrical consumption. A nonintrusive load monitor (NILM) is a convenient tool for electrical monitoring, in which all loads connected downstream of an electrical panel are monitored with a single set of current and voltage sensors. If collated in a useful way, nonintrusive …
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Preventing Stern Tube Corrosion through Shipboard Cathodic Protection
… sacrificial anode wastage estimation. Lastly, nonintrusive load monitoring, with its diagnostic capabilities, provides an opportunity to advance the complicated field of study of corrosion protection. A nonintrusive load monitor (NILM) samples the voltage and current at the utility point and …
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Extracting Electromechanical Signals for Icebreaker Insights
Nonintrusive load monitoring has a proven track record of providing benefits for equipment operation logging, fault detection and diagnostics, condition-based maintenance, and energy scorekeeping. A nonintrusive load monitor (NILM) can measure the aggregate electrical power at a central utility …
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Measurement of properties of gas-solid suspensions using phase-Doppler anemometry
… using Phase Doppler Anemometry which was a nonintrusive technique that measured the size and velocity of particles within the suspension flow. Phase Doppler Anemometry was used to determine flow properties that depended on the density of the particle phase and to discriminate between the …
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Continuum Sensitivity Analysis using Boundary Velocity Formulation for Shape Derivatives
… using finite volume formulation and its nonintrusive implementation (i.e. without accessing the analysis source code). Examples of a NACA0012 airfoil and a lid-driven cavity highlight the effect of the accuracy of the sensitivity boundary conditions on the flow derivatives. It is shown …
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Condition based monitoring and protection in electrical distribution systems
… estimation and diagnostics. Second, data from nonintrusive monitors have been shown to be valuable for power systems design. This thesis presents a new behavioral modeling framework developed for microgrid-style shipboard power system design using power observations from the ship's electrical …
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An experimental investigation of organized structure and mixing in compressible turbulent free shear layers
… on the nature of the mixing layer. Nonintrusive optical diagnostic techniques were employed to image the large structures. Both Mie scattering from condensed ethanol droplets and laser-induced fluorescence from seeded nitric oxide were used. The LIF experiments were utilized to avoid …
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Multi-fuel operation of modern engines; on board fuel identification
… In these conditions, the use of an inexpensive, nonintrusive sensor is highly desirable. </p> <p>The development of a technique based on the measurement of the instantaneous crankshaft speed and engine dynamics could be a convenient solution.</p> <p>Several such methods have been elaborated at …
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