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 17 of 17 for “"capacitive sensors"”.
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Low-noise preamplifier for capacitive sensors
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Integrated capacitive sensors using charge-redistribution sense techniques
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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Design of integrated capacitive sensors for particulate matter detection
… overcoming the issues of currently available PM sensors, in this thesis we propose a mm-scale in-flow integrated capacitive sensor of granulometry and concentration. The sensor relies on a capacitive sensor array which will be composed of a suitable number of electrodes forming planar capacitors …
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Fundamental understanding of condensation frosting and precise detection with capacitive sensors
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01
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MULTI-CHANNEL CDMA-LIKE CAPACITIVE SENSOR INTERFACE CIRCUITS
… is governed by three components, i.e. advanced sensors, low-power and low-cost sensor interface circuits and efficient wireless connections. This thesis introduces a CDMA-like period modulation multi-capacitive-sensor interface circuit, which targets at the IoT applications. The proposed …
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Opportunities for human-interfaced capacitive sensing in building environments
… work presents several types of novel long-range capacitive sensors that enable better detection of how people move through buildings, presenting ample opportunity for smart lighting and utility control. Various arrangements of sensors on walls, ceilings, and floors turn building surfaces into …
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Design of a small fast steering mirror for airborne and aerospace applications
… displacement is sensed with integrated capacitive sensors. Analysis content includes specification of performance requirements based on a realistic deep-space laser communication mission, magnetic equivalent circuit and three-dimensional magnetostatic finite element analysis of the …
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The void fraction in headers of microchannel heat exchangers
… compared to that of lower mass flux. A new capacitive sensor is then built and used to measure the void fraction and characterize flow regimes of both horizontal and vertically upward flow in the low mass flux range in circular tubes with an inner diameter of 7 mm. Three sensors with …
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Dual parametric sensors for highly sensitive nucleic acid detection
… development of a molecular scale (nano-scale) capacitive sensing mechanism for the highly sensitive and label-free detection of Nucleic Acid hybridization. These novel capacitive sensors with nano-scale electrode spacing offer solutions to many problems suffered by the conventional signal …
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Stretchable, multimodal, large-area sensor arrays fabricated using excimer laser photoablation technologies
… and design, electronic textiles, tactile sensors for flexible displays, and low-cost sensors for consumer applications. These applications have a unique set of requirements, including support for multimodal sensory input, conformability to non-planar substrates, and low-cost, large area …
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A Force Sensor Array for Space Applications
… to resist environmental effects. In this work, capacitive sensors based on a porous polymer-ceramic composite structure were evaluated for potential use in future operations within robotic end-effectors, withstanding temperatures ranging from -80 °C to 120 °C and forces up to 350 kPa. A …
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Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… Three different sensor designs were tested: a capacitive load cell with non-linear dynamics used to classify material type and tool wear conditions, an acoustic sensor used to classify tool wear, and a capacitive load cell with linear dynamics used to measure the cutting forces. Full scale rock …
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Design and development of a sensory feedback system for transradial amputees using body powered prostheses
… prototyping and testing. The system utilises capacitive sensors to mediate detection of proximity and touch, and makes use of a flex sensor to represent the position and motion of the finger digits of the prosthesis. A vibrotactile armband on the upper arm is used to feedback the sensed …
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Deep penetration magnetoquasistatic sensors
… model-based spatially periodic quasistatic-field sensors. The research developed three significant improvements in the field of nondestructive evaluation. The impact of each is detailed below: 1. The design of a distributed current drive magneto resistive magnetometer that matches the model …
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Electroquasistatic sensors for surface and subsurface nano-imaging of integrated circuit features
… and testing of electroquasistatic (EQS) sensors to be used for feature/defect location and imaging. The aim of this thesis is to launch an investigation into the use of EQS sensor arrays for non-destructive evaluation and quality control purposes for integrated circuit industry …
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Capacitive Touchscreen Sensors for the Measurement of Ions in Electrolytes
This work proposes and explores the use of mutual capacitive touchscreens as sensing tools for ion concentrations in an electrolyte, measuring directly from drops placed on the screen surface. This is explored using a standard, commercially available touchscreen made up of a conductive indium tin …
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Free-fall of LISA Test Masses: a new torsion pendulum to test translational acceleration
… one of the core parts of the LISA mission, the capacitive Gravitational Reference Sensor (GRS), which has been designed and is currently being tested in Trento. Along with an introduction to the operating principles and a closer look at its design, we will enumerate the known sources of force …