Extreme Diagnostics evolves to deal with post-9/11 realities. Our Autonomous Health Sensor (AHS) will be a portable, non-invasive testing
system that remotely scans and monitors at-risk aerospace transports,
dams, bridges, roadways and buildings.
in zero gravity
NASA asked us to design and build a way to measure how fluids behave in
space. Then we climbed aboard their zero-G simulation aircraft to test
We outfitted robotic submarines to collect coastal dynamics data off Florida's
Gulf Coast, and set up a way to control them from our lab in Boulder,
in a suitcase
NASA needed a way to monitor protein crystals growing on board the International
Space Station. We developed a custom laband fit it all into a ruggedized,
coastal observer and monitor.
objects moving in coastal waters
become extremely interesting when your beach disappears, or your
navigation channel clogs, or a red tide comes calling. Unfortunately,
they move in and out of focus so fast that photography is almost impossible.
Other methods (like optical scattering) look at particulate groups and
tell you little about individual objects. Our holographic sensors image
down to 5-micron particles and track each one up to a 30 cm distance
in focus, and underwater. We built two versions: one mobile unit
that mounts on a robotic sub and runs off external power; and a self-contained
unit for fixed piers. The pier version has remote access and both active
and passive anti-biofouling. We put it 14 miles off the coast in Tampa
Bay, hooked it into the Internet through a combination of radio modem
and the University of South Florida College of Marine Science network,
and operated it from Boulder.
Technical details: Owen, R. B. and A. A. Zozulya, "An in-line
digital holographic sensor for monitoring and characterizing marine
particulates," Opt. Eng. 39: 2187-97 (2000).