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Articles 3811 - 3840 of 7978
Full-Text Articles in Engineering
Spectrochet: A Game, Lucas Gnos
Wireless Mesh Networks For Scada Systems, Zachary Weisman
Wireless Mesh Networks For Scada Systems, Zachary Weisman
Computer Engineering
No abstract provided.
Subsystem Failure Analysis Within The Horizon Simulation Framework, Ian M. Lunsford
Subsystem Failure Analysis Within The Horizon Simulation Framework, Ian M. Lunsford
Master's Theses
System design is an inherently expensive and time consuming process. Engineers are constantly tasked to investigate new solutions for various programs. Model-based systems engineering (MBSE) is an up and coming successful method used to reduce the time spent during the design process. By utilizing simulations, model-based systems engineering can verify high-level system requirements quickly and at low cost early in the design process. The Horizon Simulation Framework, or HSF, provides the capability of simulating a system and verifying the system performance. This paper outlines an improvement to the Horizon Simulation Framework by providing information to the user regarding schedule failures …
Design And Testing Of A Novel Adhesion And Locomotion Method For Wall Climbing Vehicles, Jim R. Stefani
Design And Testing Of A Novel Adhesion And Locomotion Method For Wall Climbing Vehicles, Jim R. Stefani
Master's Theses
The objective of this project was to design, construct and test a wall climbing vehicle which uses a novel vacuum tread system for both adhesion and locomotion. The design and manufacturing of this proof of concept vehicle is detailed with particular emphasis on the design decisions that proved most impactful to the performance of both the vehicle and the tread system. Adhesion performance was characterized by a series of tests that validate the concept, but also identify improvements and design recommendations for future embodiments of the adhesion/locomotion system.
Cal Poly Supermileage Electronic Fuel Injection, Alexander Pink
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. …
Camera Stabilizer, Nathaniel Bryan, Sean Chappell, Danielle Williams
Camera Stabilizer, Nathaniel Bryan, Sean Chappell, Danielle Williams
Electrical Engineering
The goal of this project is to create an affordable camera stabilizer (the “stabilizer”) for consumers to use with cell phones or GoPro cameras. The stabilizer compensates for two axes, pitch and roll, as well as vertical movement. The system (currently only compatible with one cell phone model) is handheld and uses a combination of brushless DC motors, an Inertial Measurement Unit (IMU), and a microcontroller to compensate for the operator’s movements, stabilizing the phone for nonshaky, high quality video recording. The stabilizer provides a lowcost alternative to professional stabilization solutions employed in the production of featurelength films; the system …
Solar Generation's Impact On Fault Current, Kody Heppner
Solar Generation's Impact On Fault Current, Kody Heppner
Electrical Engineering
California is paving the road for other states with the capacity of solar installations for residential and commercial entities. The added capacity of solar generation to the state's electric grid has an impact on power flow and fault currents. This project looks at the impact of solar installations on fault currents. Feeders with added residential rooftop solar and larger commercial solar installations may impact the system differently than a large, utility-sized solar installation. This project looks at the impact of both cases on the magnitude of fault current during many different fault types and locations that can occur within a …
Critter Sitter: Weight Sensing Pet Door, Shelby Richardson
Critter Sitter: Weight Sensing Pet Door, Shelby Richardson
Electrical Engineering
Martin Kaliski is a typical pet owner. He currently houses both cats and a dog. In order to keep from having to constantly let his pets out in the middle of the night he has installed a pet door into his home. All was well and good until early one morning Martin woke up to the sound of his Pomeranian barking violently. He ran downstairs to see what the problem was. He not only found his dog standing there but also a wild raccoon. The raccoon had slipped into the house in the early morning and was rummaging through the …
Integration Of Sel Relays To Provide Motor, Transmission Line, And Transformer Protection, Christopher Ewing, Bryce Keefer
Integration Of Sel Relays To Provide Motor, Transmission Line, And Transformer Protection, Christopher Ewing, Bryce Keefer
Electrical Engineering
The objective of this project is to familiarize the performers with the principles of operation of the Schweitzer Engineering Laboratories (SEL) protective relays in both normal and fault conditions. The SEL-587, SEL-311L and SEL-710 microprocessor-based relays are used to provide protection for a system composed of transformers, simulated transmission lines and a 3-phase induction motor. Each of these relays provides protection by sending a trip signal to local breakers upon sensing a fault condition. The SEL-587 provides overcurrent and differential protection for a 3-phase transformer, while the SEL-311L provides differential and distance protection for a transmission line, and negative sequence. …
Exertion Control, Travis Taylor
Exertion Control, Travis Taylor
Electrical Engineering
Current wearable fitness devices give the user after-the-fact fitness data, but little real-time feedback. Exertion Control, a new wearable device, continuously measures the user’s heart rate, creates a heart rate target, and helps the user reach it. This project completes the senior design and master’s thesis requirements and contains two milestones. The senior design product continuously measures the wearer’s heart rate and logs it with a user-friendly interface. This data models the heart’s exertion response and recovery response. The master’s thesis device refines the closed control loop with the user to give them a workout optimized to fit their needs.
Micro-Inverter Improvement For The Energy Harvesting From Exercise Machine Project, James Ralston
Micro-Inverter Improvement For The Energy Harvesting From Exercise Machine Project, James Ralston
Electrical Engineering
The Energy Harvesting from Exercise Machines (EHFEM) project at California Polytechnic State University consists of several different projects coming together to add human generated power to the grid. This project focuses on implementing a more efficient micro-inverter. The micro-inverter used to convert DC to AC voltage requires up to 5 minutes before the conversion process begins. This time lag significantly diminishes the power produced from an exercising individual. Research of micro-inverters approved by the CEC introduces desirable micro-inverters, available for use in California, to the EHFEM project. Testing the two most desirable micro-inverters found from research allows for quantifying of …
Robotic Overbed Table, Jonathan Lantz
Robotic Overbed Table, Jonathan Lantz
Electrical Engineering
Traditionally overbed tables have simple and cheap designs, yet contain many disadvantages compared to the design proposed in this report. Disabled or bedridden persons, often require the use of a bedside table either in hospital environments or at home. Unfortunately, many modern overbed tables require the user to get out of bed and move in order to adjust and position the table. Incorporating a singlebutton control panel that allows the user to make adjustments and access other features independently, creates more accessible product. Integrated subsystems must control all motors and interfaces with an easy access control panel in order to …
Rf Power Harvesting Rectenna, Jimmy Tang, Raymond Phu, Tom Geranios, Benjamin Muñoz
Rf Power Harvesting Rectenna, Jimmy Tang, Raymond Phu, Tom Geranios, Benjamin Muñoz
Electrical Engineering
Sustainability is one of today's primary engineering objectives. This principle involves system design that minimizes environmentally harmful energy emissions and resource consumption, and maximizes renewable energy practices [1]. Communication antennas transmit wireless signals that can be converted into usable energy. The Rectenna system described in this report, shown in Figure 1, was designed to accomplish this energy conversion, with -5dBm (316µW) minimum power at the rectifier input. Since typical ambient signal power is in the -70dBm (0.1nW) range, the proposed system could only convert passive, relatively high-power microwave band AC signals to DC. The Rectenna system was designed for 1.9GHz …
Kobot: The Black Mamba's Farewell, Brian Luu, Andre Nguyen, Nathan Wicka
Kobot: The Black Mamba's Farewell, Brian Luu, Andre Nguyen, Nathan Wicka
Computer Science and Software Engineering
Our team entered the Cal Poly's annual Open House robotics competition, Roborodentia. Although our team stepped out of our comfort zone a bit (two Computer Science majors and an Applied Math major), we found the entire experience to be very enriching. In honor of this past NBA season being the last for our favorite basketball player Kobe Bryant, we dedicated the robot's design to the Black Mamba.
Roborodentia Robot (Amazon Prime), Alec Cheung
Roborodentia Robot (Amazon Prime), Alec Cheung
Computer Science and Software Engineering
Roborodentia is an annual autonomous robotics competition sponsored and hosted by Cal Poly. In the 2016 competition, participants are to design a robot that scores the most points by gathering rings from marked supply pegs and placing them onto marked scoring pegs. For Roborodentia I designed, constructed, and programmed a robot, named Amazon Prime, to compete.
Inclusive Lectern, Trent Canales, Sean Day, Dylan Sigley, Stephen Sippel
Inclusive Lectern, Trent Canales, Sean Day, Dylan Sigley, Stephen Sippel
Mechanical Engineering
A lectern is an essential piece of equipment for almost all speeches and presentations. They come in many forms and range in degree of professionalism depending on the occasion. Lecterns not only hold a presenter’s notes, a microphone, or other presentation aids, they provide a structure for a presenter that can bolster their confidence during a presentation. As such, it is important that all presenters have a lectern available to them. Unfortunately this is not always the case due to lectern accessibility limitations. This problem inspired the Cal Poly Disability Resource Center to request a lectern that satisfies the Least …
Variable Electron Applicator, Alex Choi, Jacqueline Dulken, Gabriel Kardener, Nelson Lin
Variable Electron Applicator, Alex Choi, Jacqueline Dulken, Gabriel Kardener, Nelson Lin
Mechanical Engineering
No abstract provided.
Fluid Analysis In Solar Heat Pipes, Ben Krumholz, Michael Agavo, William Dundon
Fluid Analysis In Solar Heat Pipes, Ben Krumholz, Michael Agavo, William Dundon
Mechanical Engineering
Evacuated tube solar collectors are efficient systems that use heat pipes to facilitate heat transfer. They use incoming solar radiation to heat water. Professor Mason Medizade tasked the team with choosing a component of the system to research and test its influence on system performance. The team investigated the working fluid that runs through the heat pipes. Distilled water, acetone, and ethanol at a range of fill volumes form 1 mL to 11 mL were tested. The team's goal was to find a volume for each fluid to maximize performance of the system. Performance was defined as average temperature rise …
Biomimetic Seal Flipper Test Rig, Gordon D. Belyea, Laura Kawashiri, Dylan Rinker, Kurt Beske
Biomimetic Seal Flipper Test Rig, Gordon D. Belyea, Laura Kawashiri, Dylan Rinker, Kurt Beske
Mechanical Engineering
No abstract provided.
Cp Ev Dynamics, Steven Montevideo, Ashlie Reott, L. Carter Price
Cp Ev Dynamics, Steven Montevideo, Ashlie Reott, L. Carter Price
Mechanical Engineering
No abstract provided.
Ancillary Attachment Methods, Creed Borden, Mickey Mackle, Thomas Tolley
Ancillary Attachment Methods, Creed Borden, Mickey Mackle, Thomas Tolley
Mechanical Engineering
No abstract provided.
Magnetic Bearing For Bently Nevada Rk4 Rotor Kits, Sean Fowler, Garrett Olson
Magnetic Bearing For Bently Nevada Rk4 Rotor Kits, Sean Fowler, Garrett Olson
Mechanical Engineering
Active Magnetic Bearings (AMB) are contact free bearings that support loads by magnetic levitation. This is accomplished by generating magnetic forces with electric current through a series of electromagnets surrounding a suspended rotor mass. Along with a set of electromagnets, an AMB assembly also consists of power amplifiers for each electromagnet, a controller, and proximity sensors. The proximity sensors provide rotor position feedback to the control system, which modulates power to the amplifiers [4]. Magnetic bearings are used in several industrial applications today, including but not limited to compressors, turbines, pumps, motors, and generators. Advantages of their utility include very …
Transit Seating, Luke Mielke, Chris San Nicolas, Jon Rich, Sam Thompson
Transit Seating, Luke Mielke, Chris San Nicolas, Jon Rich, Sam Thompson
Mechanical Engineering
No abstract provided.
Pet Food Monitor Using The Raspberry Pi, Kimberly Aguero
Pet Food Monitor Using The Raspberry Pi, Kimberly Aguero
Computer Engineering
Computer system built on a Raspberry Pi that will monitor the levels of food in a pet food bowl. If it detects that there is no food in the bowl, it will notify the user via email or text.
Sun Watch 3.0, Eli Backer
Sun Watch 3.0, Eli Backer
Computer Engineering
The Sun Watch was a part of Eli Backer's portfolio in applying to Masters of Fine Art programs around the country. It is a typical-looking wristwatch that does not give the time, but the position of the sun in the sky via a row of LEDs along the edge of the device. It is programmable with a custom programming board that uses pogo-pins to make reliable contact. In using the device, it is the designer's hope that the user will become less addicted to time.
The Story Of Beyoncé: The Roborodentia 2016 Contestant, Brandon Arnold, Mana Kulkarni, Aaron Newberg, Jon Sleep
The Story Of Beyoncé: The Roborodentia 2016 Contestant, Brandon Arnold, Mana Kulkarni, Aaron Newberg, Jon Sleep
Computer Engineering
No abstract provided.
Prosense, Johnny Favazza Ii, Casey Glasgow, Matt Epperson
Prosense, Johnny Favazza Ii, Casey Glasgow, Matt Epperson
Computer Engineering
This project aims to gather advanced data sets from MEMS sensors and GPS and deliver it to the user, who can capitalize on the data. The once negligible half-degree difference of your board barreling down a wave can be recorded from a gyro and exploited for the perfect turn. The exact speed dreaded by longboarders where speed wobbles turn into a road rash can be analysed and consequently avoided. Ascertaining the summit of your flight using combined GPS sensors from the ski ramp allows for the correct timing of tricks. When it comes to pursuing excellence in professional sports, amateur …
Senior Project: Control System For An Underwater Remotely Operated Vehicle, Tyler Mau, Joseph Mahoney
Senior Project: Control System For An Underwater Remotely Operated Vehicle, Tyler Mau, Joseph Mahoney
Computer Engineering
No abstract provided.
El Capitán: Cal Poly Rose Float Digital Drive System, Gregory Raffi Baghdikian
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 to …
Build-A-Board, Christopher Messerer, Brian Holland
Build-A-Board, Christopher Messerer, Brian Holland
Computer Engineering
The purpose of this project is to build a single board computer that will be able to run Linux and provide some expansion capabilities in the form of GPIO, USB, etc. This single board computer will have all the components that a fully functional computer has but with a much smaller form factor and overall capabilities.