Networked and Embedded Systems Laboratory

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Embedded networked sensing systems have been
successfully applied to environmental monitoring in a wide range
of applications. These first results have demonstrated a potential
for advancing fundamental environmental science methods and
environmental management capability as well as for providing
future methods for safeguarding public health. While substantial
progress in sensor network performance has appeared, new
challenges have also emerged. Specifically, the inevitable and
unpredictable time evolution of environmental phenomena
introduces sensing uncertainty and degrades the performance of
event detection, environment characterization, and sensor fusion.
Many of the physical obstacles encountered by static sensors may
be circumvented by a new method, Networked Infomechanical
Systems (NIMS). NIMS integrates distributed, embedded sensing
and computing systems with infrastructure-supported mobility to
enable direct uncertainty characterization, autonomous
adjustment of spatiotemporal sampling rate, and active sensor
fusion. NIMS actuation is also being applied to advancing sensor
network performance through methods based on control of
distributed, directional antenna systems. In addition to advances
in fundamental research objectives, this presentation will
describe the architecture, implementation, and application of
NIMS now deployed and continuously operating in the field.

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