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.
Results
Showing 1 to 20 of 305 for “"Non-Intrusive"”.
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Innovations in non-intrusive load monitoring
A non-intrusive load monitor (NILM) measures power at a central point in an electrical system to monitor the operation of many connected loads. Non-contact power meters sense the electromagnetic fields surrounding a cable and reconstruct the currents in each conductor. This thesis presents a novel …
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Non-intrusive anomaly detection for encrypted networks
… using IDSs. This investigation uses a new non-intrusive IDS approach to detect network intrusions using a K-Means clustering methodology. It was found that this approach was able to detect many intrusions for these datasets while maintaining the encrypted confidentiality of packet …
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Non-Intrusive Load Monitoring with Canopy Clustering
… about energy usage within the premises through Non-Intrusive Load Monitoring (NILM). The thesis provides a detailed description of the work undertaken to develop a novel method of load disaggregation within NILM to aid in the monitoring of energy usage and the provision of consumer feedback …
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Non-intrusive efficiency estimation of induction machines
… the aforementioned concerns by implementing a non-intrusive efficiency estimation technique that is applicable to induction motors in industry.
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Mathematical methods for non-intrusive load monitoring
The calculation of the Discrete Fourier Transform (DFT) of a discrete time signal is a fundamental problem in discrete-time signal processing. This thesis presents algorithms that use methods from number theory and algebra to exploit additional constraints about a signal to aid in the calculation …
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Shipboard applications of non-intrusive load monitoring
The Non-Intrusive Load Monitor (NILM) provides a method of measuring component performance and source power quality through a single point of entry in the power distribution system. A study was performed utilizing the NILM onboard three different ships (along with experimentation in the laboratory) …
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Harmonic approaches to non-intrusive load diagnostics
The Non-Intrusive Load Monitor (NILM) is a system that monitors, records and processes voltage and current measurements to establish the operating characteristics of individual loads on a load center from a single aggregate measurement. The NILM can also be used to actively monitor degradation or …
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Non-intrusive fault detection in reciprocating compressors
This thesis presents a set of techniques for non-intrusive sensing and fault detection in reciprocating compressors driven by induction motors. The procedures developed here are "non-intrusive" because they rely only on electrical measurements to reconstruct the mechanical signals internal to the …
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Improving shipboard applications of non-intrusive load monitoring
The Non-Intrusive Load Monitor (NILM) measures equipment performance by measuring and analyzing the source power to the equipment at a single point in the electrical system. Previous studies have proven the usefulness of the NILM system in characterizing the state of mechanical systems onboard U.S. …
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Methods for non-intrusive sensing and system monitoring
… the installation of an array of costly and intrusive sensors. The promise of highly effective and useful networked solutions is hemmed in by a sensing frontier consisting of significant challenges. At any time in the service life of a machine or system it may perform below its design …
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Compressible Flow Characterization Using Non-Intrusive Acoustic Measurements
Non-intrusive acoustic instruments that measure fluid velocity and temperature have been restricted to low subsonic Mach number applications due to increased complexities associated with acoustic refraction, low signal-to-noise ratios, and a limited range of practical applications. In the current …
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Shipboard fluid system diagnostics using non-intrusive load monitoring
… suited for use in such an environment is the non-intrusive load monitor (NILM). The primary benefit of the NILM is that it can assess the operational status of multiple electrical loads from a single set of measurements collected at a central point in a ship's power-distribution network. This …
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Time-frequency analysis techniques for non-intrusive load monitoring
The work in this thesis examines time-frequency analysis techniques and in particular the wavelet transform to extract the features contained within the electrical load signals. A novel approach that is based on wavelet design was utilized to generate a wavelet library which was used to match each …
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Analysis and techniques for non-intrusive appliance load monitoring.
The increased public awareness of energy conservation and the demand for smart metering system have created interests in home energy monitoring. Load disaggregation using a single sensing point is considered a cost-effective way to sense individual appliance operation as opposed to using dedicated …
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Machine learning classification techniques for non-intrusive load monitoring
Non-intrusive load monitoring is the concept of determining the operational loads using single-point sensing. The features contained within the electrical load’s signal are used to identify a unique signature which is used by a machine learning classifier to automate the load identification …
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Real-time non-intrusive reed valve measurement and analysis
… The sensor uses active infra-red to achieve non-intrusive position measurement and can be attached in close proximity to the reed valve, enabling high common mode rejection of vibration with a resolution of 0.01mm possible. The sensor underwent back to back evaluation with a recognised video …
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Single-ended non-intrusive speech quality monitoring in VoIP
… terminals. Evaluating VoIP speech quality in a non-intrusive fashion is challenging, as a reference signal is not accessible.The thesis develops a single-ended, non-intrusive speech quality classification and assessment algorithm in VoIP, which reflects end-users’ true quality of experience. A …
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