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 17 of 17 for “"Capacitive Sensing"”.
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Capacitive sensing with a fluorescent lamp
… modified fluorescent lamp that can be used as a capacitive sensing system. The lamp sensor measures changes in the electric fields emitted from the fluorescent bulbs in order to deduce the presence and motion of conductive and dielectric objects below the lamp. The prototype lamp sensor …
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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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Development of a cantilever beam, capacitive sensing, skin friction gage and supporting instrumentation for measurements
A cantilever beam type, capacitive sensing, skin friction gage has been developed. A prototype along with supporting electronics has been constructed. The cantilever beam gage is a change of area variable capacitive transducer. It is designed to measure the wall shear stress in a short duration, …
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Capacitive displacement sensing for the Nanogate
… describes the development of an integrated capacitive displacement sensor which enables nanometer precision measurement of the separation of the surfaces of the Nanogate. The work in this thesis can be divided into two parts: fabrication of a new version of the Nanogate and the development …
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Accurate capacitive metrology for atomic force microscopy
This thesis presents accurate capacitive sensing metrology designed for a prototype atomic force microscope (AFM) originally developed in the MIT Precision Motion Control Lab. The capacitive measurements use a set of commercial capacitance sensors intended primarily for use against a flat target. …
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A Design and Fabrication Pipeline for Integrating Rotary Encoders into 3D Printed Mechanisms
… rotation, and speed. MechSense encoders utilize capacitive sensing by integrating a floating capacitor into the rotating element and three capacitive sensor patches in the stationary part of the mechanism. Unlike existing rotary encoders, MechSense does not require manual assembly and can be …
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Design of integrated capacitive sensors for particulate matter detection
… 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 (pixels). The electrical capacitance between electrode pairs will …
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Towards high-bandwidth scanning impedance imaging
… imaging system. The system explored here uses a capacitively-coupled electrode array in order to distinguish various features such as a dielectric layer or a variable air gap based on measured electrode impedance. The frequency at which the impedance is measured is near 500 MHz. Also, this system …
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patial Control of the Conductivity of Poly(3,4-ethylenedioxythiopehe): Poly(styrenesulfonate) Thin Films
… emitting diodes as well as an all PEDOT:PSS capacitive sensing array were implemented. The key feature of such device demonstration being that no physical patterning or structuring of the device was required to obtain proper functionality. Both the rapid thermal annealing and the ultraviolet …
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Test mass metrology for tests of the equivalence principle
… of samples that cannot be machined, by using a capacitive sensing method. It is shown that the device has a precision of approximately 0.3 % in the differential thermal expansion of beryllium. This device could in principle be applied for the measurements of the real STEP test masses in the …
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Project PEAC : a Personal, Expressive Avatar Controller for the operation of virtual characters
… of the interface), proximal touch (enabled by capacitive sensing), whole-body movement (enabled by an internal measurement unit), touch pressure (enabled by QTC film), and finger-tip gesture (enabled by a touch screen). After many iterations of a mock prototype, a test was created to determine …
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Entwurf und Regelung von multistabilen dielektrischen Elastomerwandler-Systemen auf Basis hybrider Modellierung
… with online parameter estimation (Dual-MPC). A capacitive sensing concept with a state observer is integrated to enable precise position control without the need for complex external sensors. The results demonstrate that combining physics-based and data-driven modeling enables realistic yet …
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Determining the Reaction Zone Length in Shock Initiated PETN
… present with electrical detonators. High-rate capacitive sensing was applied as a technique for measuring detonation properties in small columns of PETN. Development of the diagnostic incorporated design of the sensor itself, event synchronisation handling and noise reduction. A custom-made …
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Analysis, modeling and design of energy management and multisource power systems
… of Energy has appropriately identified "sensing and measurement" as one of the "five fundamental technologies" essential for achieving energy security. Complementing reductions in consumption with increases in deployment of fossil-fuel-independent generation (solar and wind) and energy …
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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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Torsion Pendulum Testing of the LISA Charge Management System
… between the test masses and the surrounding capacitive sensor. Most of such electrostatic forces scale with the electric charge deposited on the test masses. This problem is aggravated by the fact that isolated objects in space, such as the floating LISA test masses, accumulate electric …
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MICROELECTRODE ARRAY FOR CAPACITIVE TRANSDUCTION OF RETINAL RESPONSES
… in affected individuals. Advances in neural sensing and stimulation interface technology will allow a more comprehensive understanding of neural function while leading to the development of hybrid biological-electronic sensor devices for robust, functioning neural prosthetic systems. Current …