Tech Briefs Magazine - November 2021 - 62

Facility Focus
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The Dambot amphibious robotic system performs initial assessments of conduits and dam gates,
along with gathering photographic documentation required for dam inspection reports. The robot
is equipped to relay a full 360° live video stream and generate a 3D map of the conduit and the
gate as it traverses through the tunnel. (U.S. Army Corps of Engineers photo)
site-specific assessments including screening
or comprehensive risk assessments.
The Computational Test Bed (CTB) is
a suite of 3D physics-based, high-fidelity
models to predict and improve the performance
of current and future force sensor
systems when detecting surface and
near-surface objects in complex environments.
The CTB helps users understand
the geophysical phenomena behind the
signatures detected by sensors operating
in the electromagnetic spectrum. It models
the physical processes at work in the
environment and how these processes
affect signatures sensed by passive and
active sensor modalities.
An intelligent heating, ventilation, and
air conditioning (HVAC) system was de -
veloped that is located within an architectural
structure. When sensors (or a hu -
man operator) detect an " incident'' (e.g.,
a contaminant is detected or an unexpected
breach occurs in the structure that
may be associated with the introduction
of a contaminant), the HVAC system
recalculates airflows for the structure. If
the newly recalculated airflow so warrants,
the system protects the structure's
occupants from the airborne contaminant
by changing the airflow through the
structure (e.g., it closes a shutter in the air
ducts, turns up a fan, or redirects airflow
to a standby filtration system).
Researchers developed a system to
extract potable water from waste materials
utilizing waste-heated air streams. The
system efficiently captures the water
vapor from waste materials such as wastewater,
brine, and sludge through an
62
Cov
accelerated evaporation process utilizing
desiccants.
A team developed portable radiation
detectors that provide directional sensing
using electronic collimation. The technology
has applications such as quickly locating
hidden, buried, or submerged radio -
active materials floating in a water body.
The prototype sensor demonstrates that
electronic collimation is possible in a
small and lightweight form factor with a
good signal-to-noise ratio.
A high-spatial-resolution, high-sensitivity
pressure sensing system for dangerous
and difficult-to-access locations consists
of a visible light laser source with 5-mW
power and a nanocomposite pressure
sensor with quantum dots embedded in
the sensor matrix. Under pressure, the
quantum dots in the sensor matrix fluoresce
when illuminated by the laser. A
spectrometer detects the fluorescent signals
and transforms them into a digital
format. The data processor then calculates
the actual fluorescence intensity
ratio and compares it against intensity
ratios and pressure values in a coupled
database.
Technology Transfer
The ERDC Office of Research and
Technology Transfer oversees the transfer
of research and development technologies
and products to the private sector.
For information on licensing an ERDC
technology, contact tto@usace.army.mil.
Visit the ERDC research and technology
transfer office at https://www.erdc.usace.
army.mil.
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Tech Briefs, November 2021
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Tech Briefs Magazine - November 2021

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