James R. (Jim) Stevenson, Ph.D.

Firmware Engineer
Pegasus Technologies, Inc.
108 Pawnook Farm Road
Lenoir City, TN 37771
/ Phone: (865) 717-9339
Fax: (865) 717-9904
Email:

Experience:

Pegasus Technologies, Inc.
August 2004 – Present: Firmware Engineer. C++ and Windows programming on a variety of projects.

Windrock, Inc.
2002 - 2004: Senior Engineer. Projects included:

  • Windows program to display both route-based and transient machine vibration data taken with Windrock’s portable engine analyzer using Borland C++ Builder and VCL class library.
  • Multi-threaded Windows program to acquire and store engine and compressor data from Windrock’s monitoring hardware over RS485 network.

Computation Systems Incorporated/STATUS Technologies
1996 - 2002: Senior Engineer. Major projects:

  • X5 embedded motor monitoring system (condition monitoring with expert system to identify critical faults in induction motors). Lead engineer for ~ half the project. Wrote engineering and manufacturing test software for system using MFC and C++ on Windows95 and NT platforms. Developed sensor specifications, specified and performed environmental testing of system.
  • MotorStatus 300/301 Unit (condition monitoring system for induction motors). Wrote software using C++ and MFC to automate both board level and final tests of units. Linearized units by making mechanical changes and developing sensor response curves. Assisted with the redeisgn of the housing to develop a waterproof case that could be opened without tools, resulting in a 10% cost reduction for the product.

Windrock Incorporated/Computational Systems Incorporated
1989 -1996: Senior Engineer. Contract work on reciprocating engine monitoring for the Army and the Gas Research Institute (GRI) and non-destructive testing for the Navy. I worked on the projects summarized below:

  • ARMY Phase III – Development of a control and monitoring system for new 1.1 MW genset for Patriot missile batteries. Completed software development and testing using real-time operating system. Designed hardware and wrote software for diesel genset simulator to support control system development. Developed mathematical model for transient thermal behavior of the engine.
  • ARMY Phase II – Developed and tested software in C for an embedded monitoring and control system for MILSTD and TQG gensets for the US Army.
  • Gas Research Institute – reliability studies and development of on-line monitoring for natural gas fueled reciprocating engines. Did research on on-line and portable methods of oil analysis leading to the SPOT oil quality sensor US Patent #5194910. Worked on the Model 6100 EngineView. Developed analytical and numerical models of exhaust gas emissions for large reciprocating engines for predictive use to meet EPA requirements. Designed and built mobile laboratory for exhaust gas emissions testing. Wrote data acquisition software for instrumentation in laboratory.
  • NAVY – Research on non-destructive test methods for advanced technical ceramics. Developed a “gum-ball machine” for automated visual and ultrasonic inspection of ceramic bearing balls. Designed and programmed 68HCO5-based data acquisition and stepper motor control board. Designed the ball handling system. Programmed PC for system control, video processing, and data reduction.

Zenith Electronics Corporation
1987 -1989:Manager, Color Test Laboratory, Rauland Division. Managed 5 technicians in the engineering laboratory of a major cathode ray tube manufacturing facility. Responsible for testing both engineering prototype and production CRTs to support development and investigate production problems. Wrote and maintained software for automated test equipment.

1981 -1987: Project Engineer, Device Research and Development. This department was responsible for development of new cathode rate tube (CRT) products and the improvement of existing products and processes. I was part of the electron gun design group.

  • Developed computerized system for measurement of the size of the focused electron beam on the CRT screen. Calculated modulation transfer functions and “just noticeable differences” from the measured data for perceptual evaluation.
  • Developed phenomenological model for the light scattering from anti-glare surfaces.
  • Performed research on the relationship between the properties of the electron spot and the perceived picture quality in color picture tubes.
  • Developed and maintained internal test software (Pascal and C) for analysis of CRT performance.
  • Used finite element codes to design magnetic shielding for Flat Tension Mask monitor tube. Fabricated and tested shields to verify performance.
  • Worked on electron gun design projects as required.
  • Participated in Electronics Industries Association JT20 standards subcommittee on measurements of CRT resolution. Edited resolution test procedure for color picture tubes.

Education:

Ph.D., Physics, Purdue University, 1981. Thesis – “Mossbauer Diffraction Studies of Anharmonic Crystals.” Developed new detector type ot maximize signal-to-noise ratio for scattering experiments.

M.S., Physics, Purdue University, 1975.

B.S., Physics, Texas A&M University, 1972. Research Assistant, TAMU Cyclotron Institute.

Publications:

Bruce Howerton, Gregory Moosa, and James R. Stevenson, “On-Line Compressor Monitoring System Using and Wide Area Network,” 2003 Gas Machinery Research Council Annual Meeting (Salt Lake City).

James R. Stevenson, James R. Fendley and Joseph Wallner, “Optical Characterization of Anti-Glare Surfaces on Cathode Ray Tubes,” 1986 SID International Symposium (San Diego)

J.R. Stevenson and J. G. Mullen, “Determination of Inelastic Critical Scattering at a First Order Phase Transition in the CDW Structure of IT-TaS2 using Mossbauer Diffraction,” Solid State Comm., 39, 319-320 (1981).

J.G. Mullen and J.R. Stevenson, “Microfoil Conversion Electron Detector for Mossbauer Spectroscopy,” Nucl. Inst. And Meth., 158, 77 (1978).

J. G. Mullen and J. R. Stevenson, “Calibration Constants in Mossbauer Diffraction Experiments,” Workshop on New Directions in Mossbauer Spectroscopy (Argonne, 1977), AIP Conference Proceedings 38, ed. G. J. Perlow, p. 55.