Mike's project list
Here’s a project list for Mike Beach, click the link for the pdf, or read it on line.
Primarily an electrical engineer, I am often involved in aspects of overall system
design, integration, and debug that include optics, lasers, heat flow, and mechanical
· Multi-disciplinary engineer, project manager, liaison between scientist,
engineers, and manufacturing, with 20+ years of experience
· Precision instrument design and development
· Low noise analog design, at both circuit board and system level
· High voltage design
· Electro mechanical system design
· Servo systems (PID, classical control theory)
· Lasers, optics, sensors, in particular the following:
· Light sensing using: photo multiplier tubes, photo diodes, APDs
· Distance and rotary motion sensing using capacitance sensors, rotary
· Phase locked loop, modulation schemes (pulse position, FM, FSK, etc)
· Test equipment using LabView and motion control I/O card
· VHDL and other logic design capability, familiar with CPLD and FPGA
designs and system level trade-offs
Some exampleprojects are listed below:
MEMS Gas Sensor.
MEMS device used as a combination sensor and source for a novel NDIR gas sensor.
Support electronics has required a careful attention to details of low-noise design,
and systems approach.
This prototype product is intended to “sniff” for landmines by sensing the volatile
chemistry of the explosives. It uses fluorescent sensors that react to various chemicals.
I was responsible for an improved re-design of the electronic “front-end” which
included an improved more stable illumination source, low noise photo diode detectors,
CPLD programming, new architecture for the A/D.
HIGH VOLTAGE RESONANT POWER SUPPLY
This is used to ionize gases in a capacitor as part of an industrial chemical
process. It operates near 25kHz, provides 1.5kW at 5kV peak to the reactive load. The
reactive power is approx. 25KVAR. It achieves the voltage by resonance of the capacitor
load with an inductive “transformer”.
LASER SCANNING FLUORESCENT MICROSCOPE
This lab instrument is used for drug discovery, DNA research. I was responsible
for the electronic system architecture, and for coordination of two software groups, one
for the micro-controllers within the instrument and one for the host PC.
Low-noise system design was paramount to be able to detect low levels of light,
using a photo-multiplier tube. A servo system controlled the line scanning of the slide,
while a stepper motor controlled the page scanning, and both of these had to remain
stable to accurately capture data pixels.
HANDHELD LASER SURGERY DEVICE
This camera sized device attached to a CO2 laser to allow plastic surgeons to
perform skin ablation to remove age wrinkles.
We made two generations of this system. The design involved a special
position feedback encoder, a special custom galvanometer design.
I was able to achieve field replace-able servo amplifiers for the
system, something that had not been available with previous systems – previously, every
galvanometer was shipped with a uniquely tuned servo.