Contact Info:
Tell Engineering
2840 Woodcrest Dr.
St. Paul MN 55112
____________________
Phone: 763-226-6531
Email: Larry@tellengineering.com
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Profile Overview: Senior Software and
Electronic engineer with extensive management experience. Hands on design and
management experience in electronics, PCB Layout, data acquisition, embedded
real time software, firmware, drivers and electronics. Experienced in
applications including aerospace, video, switchgear, and rotating machines.
Certifications:|
National
Instruments Certified Software Developer, LabWindows\CVI
(September 2007)
National Instruments Certified Professional Instructor, LabWindows\CVI
(October 2007)
Computer competencies: C, C++, VxWorks, National
Instruments Labwindows/CVI, National Instruments
Lookout, Embedded processor C++, C and assembly language, ODBII, Rolling
Codes, Manchester encoding, DeviceNet (CAN Bus),
LabView, Visual Basic, Visual C++, MS Office, Basic, DOS.
Education: BSEE University of Minnesota,
1969
Several classes, seminars etc. including a recent U of M class on
micromachines
Patents: Two patents for transfer
switches and bypass switches, patent for encoding data in video content,
patent for Ice Thickness measurement instrument.
Experience:
Consultant, Sept 1998 to Present
Current projects and Activities
Pellet grill control with 7 in color LCD and PID control of
grill temperature.
Atmel
SAM (ARM
core) processor
Completed
projects (partial list)
Environmental sensor
module (PIC16F18345).
Production line glue control (PIC32MX795)
Convert
medical product to PIC32MZ from PIC32MX
M2M
solution for large industrial machine (PIC32, Janus-Telit
modem, Sprint M2M service)
Emergency Warning Siren control
ODBII & RTCC additions to
Vehicle Monitor
Wireless Interpreter, PIC32
with Bluetooth and cell phone
Modbus TCP Product development
Toxic gas monitor, PIC18F, 4-20 mA & USB, I2C to peripherals.
Support and maintain and upgrade Spindle (machine tool) error motion analysis
software in Labwindows CVI. Product includes
extensive use of IEEE 1451.4 TEDS.
Ice Thickness instrument based on PIC18F with USB to PC program to collect
and report data.
Marine engine test monitor software.
Added Cellular modem and Smart Card Reader to a medical product for a local
firm. Wrote all using Microchip PIC processors (completed December 2005).
Software to Measure and Analyze large electric motor Torque and related
performance during design and production test.
Additions to Firmware for Heavy Equipment joystick controller using Atmel
processors (completed April 2005).
Firmware for companion product to Ammonia Leak Detector (Microchip
Processor).
Development of several software packages for precision machining analysis for
High Precision Machining company.
Software for Large Electric Generator monitoring equipment (Lookout and LabWindows CVI).
Hardware design and firmware design and code for industrial ammonia leak
detector with digital display and 4-20 mA outputs using Atmel microporcessor (Atmel processor).
Hardware design and firmware design and code for DeviceNet
temperature sensor (Microchip processor).
Wrote all software (C and C++) for two instruments for machine tool
monitoring, utilizing an Intel StrongARM embedded
processor running Wind River VxWorks and Zinc for VxWorks GUI developer.
First product was awarded “Best of Sensors Expo” award at Fall 2001 Sensors
Expo.
Added international support to machine tool instrument GUI, including support
for Asian languages.
Upgraded instrument test software in Labwindows CVI
for military equipment manufacturer.
Designed a Generator Test Panel and wrote test software for a generator
manufacturer.
Wrote several instrument test programs in Labwindows
CVI for avionics instrument manufacturer.
Upgraded video monitor controller to use Flash memory microcontroller. Two
projects for different monitor models.
Developed computer program in Labwindows/CVI (ANSI
C) to monitor machine tools. Acquire 5 position signals, 12 temperatures and
one encoder or index pulse. Data presented in real time in several graphical
and digital formats as selected by the user. Analyses include FFTs, least
squares fits and synchronous calculations defined in machine tool standards.
This project includes 15000 lines of C code and an eight chapter, 98 page
manual included in the program as a windows help file.
Dotronix,1998 to 1999
SR. Project Engineer
Designed embedded processors into industrial video monitors. Processors respond
to Infrared remote controls and adjust monitor performance. Three models
completed in 14 months. First model in production since July 1998. Second
entered production in April 1999. This model includes A/D to measure the beam
current in the picture tube, D/A to control 14 functions, Real time clock
with battery backup, Temperature measurement chip, and serial EEPROM with on-
screen display of all parameters, menus etc. All peripheral chips connected
by I2C (high speed serial protocol).
Central Engineering Company, 1983 to 1998
Sr. V.P. Engineering, 1986 to
1998
Responsible for all engineering departments (approximately 50 engineers)
including Electrical, Mechanical, Computer, and Architectural. During last 15
months, added responsibility for Project Management department (four people).
For several weeks chaired management team during medical absence of company
president. Member of advisory board. Member of several negotiating teams.
Lead negotiating team on key 6 million dollar
project during president's absence.
Lead and managed design of several new test cells and test cell
refurbishments including:
New B777 and growth engine test bed for Rolls Royce, currently largest test
cell in the world. This cell includes capability for operating the engine in full
reverse.
New B777 test cell for GE (GEAES), similar in size to RR test bed.
Modified test cell for United Air Lines to allow testing of B777 engines.
Lead and/or managed several new product developments including:
Vibration monitoring instrument based on DSP.
VXI Tachometer instrument
Family of new thrust stands.
Conversion of computer data acquisition system to Unix.
Conversion of computer data acquisition system to X-terminals.
Conversion of computer data acquisition system to VXI
Developed airflow prediction and modeling, and measurement techniques
including complex program with full documentation with references to basic
physics, equation derivation, and dimensional analysis of all equations.
Developed program to analyze torsional vibration of gearbox test stand.
Onan corp., (now Cummins Power
Generation)1968
to 1983
Manager of Component Design
Managed three design groups for Generators, Switchgear, and Controls.
Electrical Design Engineer
Lead several design projects including:
Development of new Switchgear and controls for large generating systems of
multiple diesel driven generators.
Development of several voltage regulator/excitation systems for generators.
Development of family of transfer switches.
Development of microcomputer based transfer switch
control.
Updated July 18, 2019
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