McPherson Engineering Enterprises LLC Project
Fuel quality analyzer
October 2016
Responsibilities include:
• Requirements generation and development with engineering team and customer
• Full systems engineering and design
• Opto-mechanical and mechanical design
• Optical layout
• Custom housing design including customer provided color scheme and labeling
• Cuvette sample chamber design
• Full engineering document package and draft manufacturing documentation
• Assembly of 7 prototype systems including bread board for future R&D based on this design
• Aided in generation of test plan
Product Details:
• Spectroscopically measures color and a standardized version of opacity (haze) of fuels for quality measurement and verification
• Molded plastic housing and full optical chamber designed to withstand the harsh characteristics of various fuels
• 350-900nm spectral range
• 2 on board light sources across multiple optical paths
• Light tight optical chamber for cuvette based fluidic measurement
• Utilizes and detects 3 different cuvette sizes for various fuel types
• Internal system test to indicate presence of contamination and verify accuracy of each measurement
• On board PC and touch screen with membrane display and additional user buttons
• Designed for ease of use and minimal button pushes by operator for measurement
• Envelope: 14” X 14” X 13”
Spectrometer Superbench assembly
April 2016
Responsibilities included:
• Complete system design of Superbench assembly
• Custom housing design
• Engineering and manufacturing documentation
• Assembly of 7 prototype systems
Product Details:
• Superbench assembly contains 5 spectrometers and 2 light sources, all optically coupled together for single point use
• 200nm to 1700nm spectral range
• Integrated power supplies for all components and USB hub for communication
• 4 months from project inception to delivery
• Envelope: 20” X 18” X 16”
Superbench featured on CBS News on the About page.
Prototype Design for Laser Surgery System
Ongoing
Responsibilities include:
• Provide FDA required engineering document package
• System Design including systems and industrial engineering
• Integration of all components
• Consideration for cooling and air flow
• Implementation of customer requirements (shape, casters, laser, chiller, etc.)
• Opto-mechanical design for laser delivery through external SMA
Product Details:
• SMA fiber output with external fiber sensing
• Switch membrane control display
• Thulium Laser ~2000nm
• Secondary indicating laser coaxial with Thulium laser
• Laser focus into variable fiber options
• Swivel Casters
• Removable skins for easy access and service to internal components
• External footswitch control, emergency shutoff, key switch, power cord,
bumpers, and handles
• Internal power distribution, system control, laser, chiller, laser fiber, indicator
laser, and coaxial laser combining optical assembly with focus into SMA
• Envelope: 35.5” X 34” X 22.7”
Long range / dynamic spectrometer system for education
April 2016
Responsibilities included:
• Complete system design
• Optical layout
• Documentation
• Assembly
• Functional test
Product Details:
• 200nm to 1700nm spectral range
• Resolution down to 0.08nm
• 3 interchangeable detector options within a single system
• 4 grating turret to provide spectral range and resolution variances
• On the fly alignment capability for any configuration within defined parameters including easy ergonomic access for educators and students
• USB 2.0 interface with 12V power for cooled detector option (900-1700nm range detector)
• Envelope: 12” X 12” X 6”
• SMA 905 input interface with adjustable slit widths from 25 to 200 micron
including optional filter for 785nm RAMAN measurement
• Hinged lid and external grating rotation adjustment for ease of use
• Project kickoff to delivery in < 6 weeks
Emissions Monitor Subassembly
January 2015
Responsibilities included:
• Develop and define system requirements
• Opto-mechanical design
• Optical layout
• Project engineering
• Full transfer to manufacturing
• Tooling
• Customer interface
Product Details:
• 200nm to 650nm spectral range
• Designed to interface to bifurcated optical fiber and probe assembly for
emissions transmission measurement
• Off the shelf, pulsed Xenon light source
• Field replaceable light source with quick eject for light source change
in < 1 minute
• SPI communication to EMBED spectrometer (2013 design project
http://oceanoptics.com/product/embed-spectrometer/ )
• Envelope: 7.5” X 4” X 4”
• SMA 905 input interface to spectrometer, custom light source to fiber interface for optimal throughput
Dale McPherson Projects
Liquid Authenticator Pelicase System
December 2014
Responsibilities included:
• Project engineering
• Develop and define system requirements
• Opto-mechanical system design
• Optical layout
• Cost analysis
• Complete documentation package
• Full transfer to manufacturing
• Quality requirements definition
• Tooling
• Customer interface
Product Details:
• Fluidic cell measurement system with optical path lengths ranging from 0.2mm to 20mm utilized for absorbance measurement
• Single spectrometer and source utilized for 3 fluidic channel measurement system
• Deuterium / Halogen light source with field replaceable bulb
• Embedded laptop PC
• Custom SMA 905 fiber optic assemblies
• 220nm to 450nm spectral range
• USB 2.0 interface with 120V AC power
• Envelope: 18-1/2" X 14” X 7"
• 3 channel fluidic input and output ports
• System temperature and bulb life monitoring
• For more information: http://oceanoptics.com/product-category/integrated-systems/
Prostate Biopsy Detection Subassembly
November 2014
Responsibilities included:
• opto-mechanical system design
• complete documentation package
• customer interface
• requirements development
• test and manufacturing documentation
• assembly, test, and delivery
Product Details:
• Quantity 2 prototype systems delivered
• Spectrometer and light source subassembly
• Custom SMA 905 fiber optic assemblies
• 220nm to 650nm spectral range (custom ranges available)
• Custom light source, 3 source co-axial focused into fiber through SMA port.
• Extreme light source stability and lifetime requirements
• On board photodiode feedback and temperature controller for sources
• 12V DC power
• Envelope: 15-1/2" X 10-1/4” X 3-1/2"
Additional Projects (more details may be furnished upon request):
• Slit alignment station for improved spectrometer slit accuracy and streamline of manufacturing. Increased accuracy by 50% and repeatability by 100%, increased throughput by 75%.
• NIRQuest project program manager and systems engineer. http://oceanoptics.com/product/nirquest-custom/
• Automated test fixture for largest volume OEM for reduced field failures and streamline of manufacturing. Increased accuracy of test results by 80%, reduced field failures by 60%.
• Laser resonator redesign for efficiency and reduce field failures. Increased throughput power by 20%, increased rep rate by 10%, reduced field failures by 50%.
*SEE RESUME FOR ADDITIONAL PROJECT AND EXPERIENCE INFORMATION
© 2015 McPherson Engineering Enterprises, LLC.