Jeffrey Demieville, MS, EIT

Jeffrey Demieville, MS, EIT

Interdisciplinary R&D Engineer

Portfolio

Custom Thermal Targets - 2022

Based on a published design (Han, Xiongzhe & Thomasson, J. & Swaminathan, Vaishali & Wang, Tianyi & Siegfried, Jeffrey & Raman, Rahul & Rajan, Nithya & Neely, Haly. (2020). Field-Based Calibration of Unmanned Aerial Vehicle Thermal Infrared Imagery with Temperature-Controlled References. Sensors. 10.3390/s20247098.), developed a reference target for field calibration of thermal imagery from aircraft. Replace unavailable components with suitable alternatives and modify design for portability. Built and calibrated the equipment. The equipment was deployed in-field and used for data acquisition.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2022

Initiated software rewrite project to replace the field scanner operating and acquisition software, integrate new equipment, and modernize the system.
University of Arizona, Maricopa, Arizona, USA

EIT Registration - 2022

Registered as an EIT with the Texas Board of Professional Engineers and Land Surveyors.
Texas, USA

FAA-Certified Remote Pilot - 2022

Passed Unmanned Aircraft General – Small (UAG) exam and received FAA Remote Pilot Certificate under Part 107 rules.
University of Arizona, Maricopa, Arizona, USA

Custom Mounts for Spectralon Targets - 2021

Designed and 3D printed custom mounts to secure multistep Spectralon targets in-field for data collection.
University of Arizona, Maricopa, Arizona, USA

Biosphere 2 Landscape Evolution Observatory - 2021

Developed a preliminary design for implementing an imaging system to a gantry at the Landscape Evolution Observatory. The design was included in an Equipment Enhancement Fund proposal that was later funded in the amount of $137,938.
University of Arizona, Oracle, Arizona, USA

Custom Ceptometers - 2021

Based on a published design (Salter, W. T., Merchant, A. M., Gilbert, M. E., Buckley, T. N. PARbars: Cheap, Easy to Build Ceptometers for Continuous Measurement of Light Interception in Plant Canopies. J. Vis. Exp. (147), e59447, doi:10.3791/59447 (2019).), developed a measurement system and ceptometers for capturing information on light within crop canopy. Replace unavailable components with suitable alternatives. Built and calibrated the equipment. The equipment showed strong agreement with a known-good, calibrated sensor. The equipment was deployed in-field and obtained data at a significantly lower cost than commercially available solutions.
University of Arizona, Maricopa, Arizona, USA

Master of Science - 2021

Completed a Master of Science in Systems Engineering as well as a graduate certificate in Engineering Management from the University of Arizona. Took advanced coursework in sensing technology and processing, project management, and quality and reliability engineering. Developed a framework for performing reliability engineering on the Maricopa Field Scanner that can be seen here. Portions of this have been implemented to the system to permit reliability growth and long-term sustainability.
University of Arizona, Tucson, Arizona, USA

University of Arizona Field Scanalyzer - 2020

Initiated software rewrite project to replace the field scanner PLC software.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2020

Integrated a new hyperspectral imager to the field scanner system as a proof-of-concept, showing the potential of the machine with new equipment.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2020

Gathered historical data of system throughput and created simulations for ongoing data production for the field scanner system. Using these simulations to quantify our needs, we were able to reduce recurring costs for internet service.
University of Arizona, Maricopa, Arizona, USA

UAS Integration - 2020

Calibrated and integrated thermal camera onto unmanned aerial system. Photo courtesy of Sebastian Calleja, University of Arizona
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2020

Undertook role of lead engineer of the Field Scanalyzer platform.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2019

Undertook a project to rewrite the operating scripts on the Maricopa Field Scanner Sensing Platform, refactoring and optimizing the codebase. This reduced the number of scripts used in the season from 107 in the 2018-2019 winter season to 92 in the 2019 summer season, and then further to only 2 actively-used and 7 special-purpose scripts in the 2019-2020 winter season. Iterative development led to parameter-driven operation of the field scanner system and automation of significant portions of the work.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2018

Developed a method to improve throughput of the Photosystem II (PSII) chlorophyll fluorescence imager on the Maricopa Field Scanner Sensing Platform, increasing the number of plots that could be processed per hour from 20 to 80.
University of Arizona, Maricopa, Arizona, USA

University of Arizona Field Scanalyzer - 2018

Started as the Field Scanner Operator, an engineer responsible for maintenance, operation, and development of the Field Scanalyzer platform, the world’s largest field phenotyping robot, located at the University of Arizona Maricopa Agricultural Center.
University of Arizona, Maricopa, Arizona, USA

Bachelor of Science - 2018

Completed a Bachelor of Science in Biological and Agricultural Engineering as well as an undergraduate certificate in Engineering Therapeutics Manufacturing from Texas A&M University. Took advanced coursework in food and bioprocess engineering and completed minors in Mathematics and Business Administration.
Texas A&M University, College Station, Texas, USA

FE Other Disciplines - 2018

Passed NCEES Fundamentals of Engineering (FE) Exam - Other Disciplines.
Texas, USA

Texas A&M Capstone Design Project - 2018

Using Controlled Atmosphere to Reduce Post-Harvest Losses - Mitigating Impact of the Larger Grain Borer in East Africa.
Received Senior Capstone Design Second Place Award - Biological and Agricultural Engineering with co-authors Ezekiel McReynolds, Kevin Jerpseth, and Brandon Flores.
A prototype storage unit was created and outfitted with sensors to measure carbon dioxide, oxygen, and temperature. The design was able to successfully develop an atmosphere which would induce dormancy in the larger grain borer.
Texas A&M University, College Station, Texas, USA

ICRISAT Internship - 2017

High throughput phenotyping on yield plots and effect of moisure on data quality. Developed calibrations and standard operating procedures for seed counting and moisture measurement equipment. Developed and presented 3-day training course at Bangladesh Rice Research Institute on high-throughput phenotyping tools and technology.
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, Telangana, India

Texas A&M AgriLife Ground Vehicle - 2016

Electrical and software integration of various sensors to a high-clearance tractor for use in maize phenotyping. Photo courtesy of Blair Fannin, Texas A&M AgriLife Research.
Texas A&M University, College Station, Texas, USA