Kevin Ray Baker
3015 Fieldview Drive
Murfreesboro, TN 37128
(615) 895-5543 (home)
(615) 305-7860 (cell)
kr.baker@comcast.net
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Responsible for hardware and software design of modular automatic revenue collection equipment, surveying equipment, and navigational mapping equipment, as well as some IBM PC programming to support product testing. Responsibilities also include other product/circuit design, manufacturing support, circuit/data analysis, peer reviews, engineering documentation, proposal estimates/support, proposal contract review, obsolescence mitigation, EMI/RFI suppression to pass FCC requirements, vendor support, printed circuit board layout (familiar with EAGLE PCB) and some light mechanical design.  Some project management experience and leadership skills. Self-motivated and able to prioritize, manage and schedule tasks with minimal supervision.
2 U.S. Patents: #5,241,360, #6,739,444

Responsible for design of professional analog audio equipment, p.c. board layout, drafting, documentation, some mechanical design and final product specifications.
Consultant to Cubic Precision, Inc.

Responsible for hardware and software design of surveying equipment and navigational mapping equipment, manufacturing support, limited mechanical design and minor drafting.
 

Analog signal processing, linear and switching power supplies, electro-optics including high-sensitivity avalanche photodiode receivers, limited RF design, phase-locked loops, battery chargers, digital logic, microprocessor/microcontroller design, battery-backed memory, communications interfacing, magnetic card readers, coin/bill acceptance, analog computation, sensor design, ESD protection and pcb layout.

Real-time operating systems for embedded microcontrollers, state machines, interrupt driven i/o, multi-tasking, floating point math at assembly language level, RS232/RS485 serial communications, interfacing, custom libraries, graceful recovery from ESD/brownout, etc. Languages include compiled BASIC, PL/M and assembly language for 8048, 8051, 6800, 68HC11, Z80, 8080/8085, 80x86, 6502, 80C251 families of microprocessors/microcontrollers.

Intel: 8080/8085, 8048, 8051, 80C51FA/B/C, 80C251
Motorola: 6800, 6801, 6803, 68HC11
Hitachi: 6301
Philips: 80C451, 87C748/749/750/751/752
Dallas: 80C320
Siemens: 80C537
Zilog: Z80
Mitsubishi: M50734

Implementation of SAE J1708/J1587 standard for Heavy Equipment network for Houston Metropolitan Transit Authority (s/w)
Design of Mass Memory board for bus farebox for New York City Transit Authority; consists of battery-backed static RAMS with a microprocessor controlled smart charging circuit with switching power supply (h/w & s/w)
Design of coin sensor using properties of inductance (h/w & s/w); Patent #6,739,444
Design of standalone bus fare acceptance/processing unit
Design of ticket validator that accepts tickets, prints on both sides and validates ticket
Various software design for Farebox, including bill acceptance module, coin acceptance module, magnetic card read/write unit, and master controller module
Design of high speed optical probe for retrieving financial records from farebox
Design of smart display module for magnetic ticket processing unit for Chicago Transit Authority (s/w)
Design of smart high-resolution optical encoder system (h/w & s/w)
Design of laser-based distance measuring device; U.S. Patent #5,241,360 (h/w & s/w)
Design of LED-based distance measuring device (h/w & s/w)
Design of multiplexed radio-modem controller for navigational measuring device (h/w & s/w)
Design of PC serial interrupt software routines to guard against noise from multiplexed radio modems located behind ships
Design of interface to third-party depth sounders (h/w & s/w)
Design of interface from distance measuring device to third-party theodolites (h/w & s/w)
Design of software modifications to third party equipment
Design of PC-based card magnetic read/write/verify unit for use in Canadian transit authorities (h/w, s/w & PC s/w)
Design of distance measuring device used by the U.S. Army in field operations (h/w & s/w)
Design of test fixtures for Service Department and Manufacturing usage
Design of digital audio prototype
Design of low-cost professional audio equipment (compressor/limiters, gates, de-essers); control circuitry consisted of complex analog computation modules
Redesign of power control board that failed FCC Class A emissions limits to pass Class B

Design of quick-charger for battery-operated home-bound prisoner monitoring device (h/w)
Design of software to interface to third-party equipment (s/w)
Design of custom PL/M libraries for the Intel PL/M compiler to take advantage of specialized hardware or limitations in various 8051-family parts
Design of various audio devices
LAN experience with complex home network with print servers, repeaters, etc.
Various confidential embedded control projects
Advanced knowledge of pc-based audio signal processing and mixing