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There are currently 4
seismic data acquisition units in the ISS stable.
The Quake Seismometer (QS)
offers high-precision sampling, intelligent triggering and fault-tolerant
communications for mine-wide real-time seismic monitoring (see
Typical Applications for examples).
The StandAlone Quake
Seismometer (SAQS)
offers the same benefits but can be left in an independent mode with seismic
data stored locally and time-stamped with GPS time (see
Typical Applications for examples).
The
mini SAQS is a cost-effective unit capable of running off internal
disposable batteries for over 3 weeks, storing seismic signals to memory for
later retrieval via an ASCII download off an internal web-page.
The Counting
Seismometer is under development, and will be released in early 2003. The
design is based on small self-contained units that communicate via a wireless ad
hoc network to provide infrastructure-less extensions to existing real-time
seismic networks. Each unit will pre-process seismic signals to provide
statistical data about local micro-fracture populations and hence enable
personal seismic safety monitors.
The Recording Seismometer
(RS)
is the world's smallest seismic data acquisition unit. Hand sized, this unit has
internal rechargable batteries that allow it to stay concealed in the field for
over 3 weeks, recording the largest signals to memory for later download.
COPYRIGHT
2002 © ISS INTERNATIONAL LIMITED
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