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Asynchronous Data Processing Platforms For Energy Efficiency, Performance, And Scalability, Liang Men 2016 University of Arkansas, Fayetteville

Asynchronous Data Processing Platforms For Energy Efficiency, Performance, And Scalability, Liang Men

Theses and Dissertations

The global technology revolution is changing the integrated circuit industry from the one driven by performance to the one driven by energy, scalability and more-balanced design goals. Without clock-related issues, asynchronous circuits enable further design tradeoffs and in operation adaptive adjustments for energy efficiency. This dissertation work presents the design methodology of the asynchronous circuit using NULL Convention Logic (NCL) and multi-threshold CMOS techniques for energy efficiency and throughput optimization in digital signal processing circuits. Parallel homogeneous and heterogeneous platforms implementing adaptive dynamic voltage scaling (DVS) based on the observation of system fullness and workload prediction are developed for balanced ...


Analog Vlsi Circuit Design: Linear Voltage Regulator, Brett Colteaux, Kirstie Fung 2016 California Polytechnic State University, San Luis Obispo

Analog Vlsi Circuit Design: Linear Voltage Regulator, Brett Colteaux, Kirstie Fung

Electrical Engineering

The project outlined in this report is the design, layout, and routing of a linear voltage regulator using Cadence VLSI (very-large-scale integration) software. The design specifications for this regulator are as follows: input voltage range of 5V + 1V, load current capabilities of 150mA, and output voltage range of 1.15V to 3.3V. Furthermore, the design of this circuit was broken into three main sub-circuits: an error amplifier, bandgap reference circuitry, and biasing circuitry for the bandgap. Together, these sub-circuits integrated to make the final design.

Research for different topologies for a voltage regulator was done and the Brokaw bandgap ...


A Stroke Therapy Brace Design, Evan Kirkbride 2016 California Polytechnic State University, San Luis Obispo

A Stroke Therapy Brace Design, Evan Kirkbride

Electrical Engineering

Victims of stroke often have difficulty with rehabilitation. With limited movement on their affected arm, patients often do not want to move much for physical therapy. In this project, we design a robotic brace that helps stroke patients move their arm more effectively in a reaching or pulling motion. By giving patients more movement in their affected arm than they would have otherwise, patients gain more from rehabilitation. The brace also adapts to the patient’s needs, providing more inclination or resistance as needed for their physical therapy. This kind of therapy engages patients rather than relying on their likely ...


Cal Poly Supermileage Electronic Fuel Injection, Alexander Pink 2016 California Polytechnic State University, San Luis Obispo

Cal Poly Supermileage Electronic Fuel Injection, Alexander Pink

Electrical Engineering

Cal Poly Supermileage is a student-run engineering club that builds prototype gasoline vehicles optimized maximum fuel-efficiency. To power their vehicles, the Supermileage team makes use of single-cylinder, 4-stroke, electronically fuel-injected (EFI) gasoline engines. This report details the development, iterative design & test cycles, and integration of an EFI system for the Supermileage club. This project develops an EFI system that interfaces to the most common types of sensors found in the low-power Supermileage-range of engines, including throttle-position sensors, manifold absolute pressure sensors, gear-tooth hall-effect sensors, variable-reluctance position sensors, engine coolant temperature sensors, intake air temperature sensors, and exhaust oxygen sensors. This ...


El Capitán: Cal Poly Rose Float Digital Drive System, Gregory Raffi Baghdikian 2016 California Polytechnic State University, San Luis Obispo

El Capitán: Cal Poly Rose Float Digital Drive System, Gregory Raffi Baghdikian

Computer Engineering

In today’s world of smartphones, self-driving cars, and internet-connected coffee makers, it seems as if computers are contained in everything around us. These “embedded systems” have become critical components of our lives, improving everything about the things they control, from cost, to speed, to simplicity. One area that embedded systems has hardly gained a foothold is in the world of floatbuilding. Most of the floats in the Tournament of Roses Parade, including the one built jointly by Cal Poly San Luis Obispo and Cal Poly Pomona, are technologically very simple, using mostly analog components and rudimentary discrete digital logic ...


Design Of An Integrated Acceleration Acquisition Subsystem To Satisfy High-Speed And Low-Area Requirements For Cubesats, Ryan J. Rumsey 2016 California Polytechnic State University, San Luis Obispo

Design Of An Integrated Acceleration Acquisition Subsystem To Satisfy High-Speed And Low-Area Requirements For Cubesats, Ryan J. Rumsey

Master's Theses and Project Reports

Cal Poly San Luis Obispo’s PolySat team is designing the Multipurpose Orbital Spring Ejection System (MOSES) in order to record acceleration data during the launch of CubeSats as well as to provide GPS coordinates to locate the position of CubeSats once they are injected into orbit. This work focuses on the design and development of the acceleration data acquisition (DAQ) subsystem of MOSES. This subsystem is designed around the need for a high-speed sampling system of at least 200 kHz across four channels of data, plus low-area limitations in the MOSES form factor which is roughly half the size ...


Design And Implementation Of An Integrated Biosensor Platform For Lab-On-A-Chip Diabetic Care Systems, Khandaker Abdullah Al Mamun 2016 University of Tennessee - Knoxville

Design And Implementation Of An Integrated Biosensor Platform For Lab-On-A-Chip Diabetic Care Systems, Khandaker Abdullah Al Mamun

Doctoral Dissertations

Recent advances in semiconductor processing and microfabrication techniques allow the implementation of complex microstructures in a single platform or lab on chip. These devices require fewer samples, allow lightweight implementation, and offer high sensitivities. However, the use of these microstructures place stringent performance constraints on sensor readout architecture. In glucose sensing for diabetic patients, portable handheld devices are common, and have demonstrated significant performance improvement over the last decade. Fluctuations in glucose levels with patient physiological conditions are highly unpredictable and glucose monitors often require complex control algorithms along with dynamic physiological data. Recent research has focused on long term ...


Conversion Of Digital Circuits Labs, Caleb N. Taber 2016 ETSU

Conversion Of Digital Circuits Labs, Caleb N. Taber

Undergraduate Honors Theses

The engineering technology department at ETSU currently lacks a modern method to teach digital circuits. The aim of this thesis is to convert our current digital circuits labs to equivalent labs suited to run on the Basys 3. The Basys has several advantages over the aging NI Elvis boards (and now just breadboards) currently in use. The first advantage is that the Basys gives students a taste of FPGA programming without being overwhelmingly; like the systems currently in place for the digital signal processing class. The Basys is also a more modern system; our current integrated circuit and breadboard system ...


Prevention Of Drone Jamming Using Hardware Sandboxing, Joshua Mead 2016 University of Arkansas, Fayetteville

Prevention Of Drone Jamming Using Hardware Sandboxing, Joshua Mead

Theses and Dissertations

In this thesis, we concern ourselves with the security of drone systems under jamming-based attacks. We explore a relatively new concept we previously devised, known as hardware sandboxing, to provide runtime monitoring of boundary signals and isolation through resource virtualization for non-trusted system-on-chip (SoC) components. The focus of this thesis is the synthesis of this design and structure with the anti-jamming, security needs of drone systems. We utilize Field Programmable Gate Array (FPGA) based development and target embedded Linux for our hardware sandbox and drone hardware/software system.

We design and implement our working concept on the Digilent Zybo FPGA ...


Correcting Current Imbalances In Three-Phase Four-Wire Distribution Systems, Vinson Joseph Jones 2016 University of Arkansas, Fayetteville

Correcting Current Imbalances In Three-Phase Four-Wire Distribution Systems, Vinson Joseph Jones

Theses and Dissertations

The objective of this thesis is to present the theory, design, construction, and testing of a proposed solution to unbalanced current loading on three-phase four-wire systems. The Unbalanced Current Static Compensator is the name of the prototype; herein referred to as the UCSC. The purpose of this prototype is to redistribute current between the three phases of a distribution system. Through this redistribution, negative- and zero-sequence currents are eliminated and a balanced system is seen upstream from the point of installation.

The UCSC consists of three separate single-phase H-bridge inverters that all share the same dc-link capacitor. Each of these ...


Design Of An Assistive Technology Adaptive Switch Using An Inertial Measurement Unit, Ethan Storm Williams 2016 University of Arkansas, Fayetteville

Design Of An Assistive Technology Adaptive Switch Using An Inertial Measurement Unit, Ethan Storm Williams

Theses and Dissertations

A new assistive technology switch for people with disabilities was developed utilizing an Inertial Measurement Unit (IMU) as the sensor technology. The hardware can be customized through firmware to provide custom switch activations on a person by person basis. The firmware is customized to recognize specific data features in the IMU data which identify the desired switch activation movement performed by the user. In this way, the switch can be adapted to activate based on the movements of the user. During this research, the generic hardware platform, including the IMU sensor technology and Bluetooth communications, was designed and tested. An ...


Distributed Thin Film Sensor Array For Damage Detection And Localization, Austin Downey, Simon Laflamme, Filippo Ubertini 2016 Iowa State University

Distributed Thin Film Sensor Array For Damage Detection And Localization, Austin Downey, Simon Laflamme, Filippo Ubertini

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

The authors have developed a capacitive-based thin film sensor for monitoring strain on mesosurfaces. Arranged in a network configuration, the sensing system is analogous to a biological skin, where local strain can be monitored over a global area. The measurement principle is based on a measurable change in capacitance provoked by strain. In the case of bidirectional in-plane strain, the sensor output contains the additive measurement of both principal strain components. In this paper, we present an algorithm for retrieving unidirectional strain from the bidirectional measurements of the capacitive-based thin film sensor when place in a hybrid dense sensor network ...


Model Calibration For A Soft Elastomeric Capacitor Sensor Considering Slippage Under Fatigue Cracks, Xiangxiong Kong, Jian Li, Caroline Bennett, William Collins, Simon Laflamme 2016 University of Kansas

Model Calibration For A Soft Elastomeric Capacitor Sensor Considering Slippage Under Fatigue Cracks, Xiangxiong Kong, Jian Li, Caroline Bennett, William Collins, Simon Laflamme

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

A newly-developed soft elastomeric capacitor (SEC) strain sensor has shown promise in fatigue crack monitoring. The SECs exhibit high levels of ductility and hence do not break under excessive strain when the substrate cracks due to slippage or de-bonding between the sensor and epoxy. The actual strain experienced by a SEC depends on the amount of slippage, which is difficult to simulate numerically, making it challenging to accurately predict the response of a SEC near a crack. In this paper, a two-step approach is proposed to simulate the capacitance response of a SEC. First, a finite element (FE) model of ...


Input Space-Dependent Controller For Multi-Hazard Mitigation, Liang Cao, Simon Laflamme 2016 Iowa State University

Input Space-Dependent Controller For Multi-Hazard Mitigation, Liang Cao, Simon Laflamme

Civil, Construction and Environmental Engineering Conference Presentations and Proceedings

Semi-active and active structural control systems are advanced mechanical devices and systems capable of high damping performance, ideal for mitigation of multi-hazards. The implementation of these devices within structural systems is still in its infancy, because of the complexity in designing a robust closed-loop control system that can ensure reliable and high mitigation performance. Particular challenges in designing a controller for multi-hazard mitigation include: 1) very large uncertainties on dynamic parameters and unknown excitations; 2) limited measurements with probabilities of sensor failure; 3) immediate performance requirements; and 4) unavailable sets of input-output during design. To facilitate the implementation of structural ...


A High Performance Advanced Encryption Standard (Aes) Encrypted On-Chip Bus Architecture For Internet-Of-Things (Iot) System-On-Chips (Soc), Xiaokun Yang 2016 Florida International University

A High Performance Advanced Encryption Standard (Aes) Encrypted On-Chip Bus Architecture For Internet-Of-Things (Iot) System-On-Chips (Soc), Xiaokun Yang

FIU Electronic Theses and Dissertations

With industry expectations of billions of Internet-connected things, commonly referred to as the IoT, we see a growing demand for high-performance on-chip bus architectures with the following attributes: small scale, low energy, high security, and highly configurable structures for integration, verification, and performance estimation.

Our research thus mainly focuses on addressing these key problems and finding the balance among all these requirements that often work against each other. First of all, we proposed a low-cost and low-power System-on-Chips (SoCs) architecture (IBUS) that can frame data transfers differently. The IBUS protocol provides two novel transfer modes – the block and state modes ...


An Openeaagles Framework Extension For Hardware-In-The-Loop Swarm Simulation, Derek B. Worth 2016 Air Force Institute of Technology

An Openeaagles Framework Extension For Hardware-In-The-Loop Swarm Simulation, Derek B. Worth

Theses and Dissertations

Unmanned Aerial Vehicle (UAV) swarm applications, algorithms, and control strategies have experienced steady growth and development over the past 15 years. Yet, to this day, most swarm development efforts have gone untested and thus unimplemented. Cost of aircraft systems, government imposed airspace restrictions, and the lack of adequate modeling and simulation tools are some of the major inhibitors to successful swarm implementation. This thesis examines how the OpenEaagles simulation framework can be extended to bridge this gap. This research aims to utilize Hardware-in-the-Loop (HIL) simulation to provide developers a functional capability to develop and test the behaviors of scalable and ...


Implementation And Performance Of Factorized Backprojection On Low-Cost Commercial-Off-The-Shelf Hardware, Alec C. Rasmussen 2016 Air Force Institute of Technology

Implementation And Performance Of Factorized Backprojection On Low-Cost Commercial-Off-The-Shelf Hardware, Alec C. Rasmussen

Theses and Dissertations

Traditional Synthetic Aperture Radar (SAR) systems are large, complex, and expensive platforms that require significant resources to operate. The size and cost of the platforms limits the potential uses of SAR to strategic level intelligence gathering or large budget research efforts. The purpose of this thesis is to implement the factorized backprojection SAR image processing algorithm in the C++ programming language and test the code's performance on a low cost, low size, weight, and power (SWAP) computer: a Raspberry Pi Model B. For a comparison of performance, a baseline implementation of filtered backprojection is adapted to C++ from pre-existing ...


Oceanographic Instrument Simulator, Amy Chen 2016 Monterey Bay Aquarium Research Institute

Oceanographic Instrument Simulator, Amy Chen

Master's Theses and Project Reports

The Monterey Bay Aquarium Research Institute (MBARI) established the Free Ocean Carbon Enrichment (FOCE) experiment to study the long-term effects of decreased ocean pH levels by developing in-situ platforms [1]. Deep FOCE (dpFOCE) was the first platform, which was deployed in 950 meters of water in Monterey Bay. After the conclusion of dpFOCE, MBARI developed an open source shallow water FOCE (swFOCE) platform located at around 250 meter of water to facilitate worldwide shallow water experiments on FOCE [1][2]. A shallow water platform can be more ubiquitous than a deep-water platform as shallow water instruments are less expensive (as ...


An X-Band Patch Antenna Sensor For Quantitative Dielectric Characterization Of Stratified Low-Conductivity Media, Robert T. Sheldon, Nicola Bowler 2016 Iowa State University

An X-Band Patch Antenna Sensor For Quantitative Dielectric Characterization Of Stratified Low-Conductivity Media, Robert T. Sheldon, Nicola Bowler

Review of Progress in Quantitative Nondestructive Evaluation

A method for characterizing the dielectric properties of multilayer low-conductivity structures using an X-band (8 to 12 GHz) patch antenna sensor is developed. The dominant mode resonant frequency of the patch antenna depends on its own electrical and geometrical parameters and on the permittivity and geometry of a material-under-test. A forward model for calculating resonant frequency and quality factor of the patch is validated by comparing calculated values of resonant frequency and quality factor with values measured on a variety of materials with well-characterized dielectric properties in the X-band. Excellent agreement between calculated and measured values of sensor resonant frequency ...


Capacitive Sensing For Nuclear Power Plant Cable Insulation Assessment, Nicola Bowler, Shuaishuai Liu, Michael I. Byler, Leonard S. Fifield 2016 Iowa State University

Capacitive Sensing For Nuclear Power Plant Cable Insulation Assessment, Nicola Bowler, Shuaishuai Liu, Michael I. Byler, Leonard S. Fifield

Review of Progress in Quantitative Nondestructive Evaluation

The ability to evaluate, nondestructively, the material state of insulation polymers widely employed in aged control and power cables has been identified as important In the process of routine safety inspection and safety inspection for license renewal of aging Light Water Reactor Nuclear Power Plants (NPPs) in the United States [1]. The present industry standard is that the insulation polymer breaking strain (or elongation-at-break, EAB) should be no less than 50% of that value measured on the pristine material, for the aged insulation polymer to be fit for service. Measurement of EAB is destructive, the method requires a relatively large ...


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