Speaker
Description
A sophisticated earthquake data recorder, based on ARM technology, has been developed
and improved based on the last standards in the world of seismic data recording assigned for
earthquake studies. Abilities of exact timing, low power consuming, long time field operating
without maintenance, remote access and remote setting of parameters, customizable data
sampling and various modes for recording with different formats of output data are just
some the most important features of the developed instrument. It relies on a combination of
commodity hardware and free, open-source software to deliver provable data recording quality.
For accurate timing, routine GPS data is combined with the very low-jitter synchronization
pulses modulated on the same signal and fed directly into a 24-bit analog-to-digital conversion
unit. Samples thus acquired and time stamped are then collected and stored as self-describing,
self-contained miniSEED streams, one per data channel. These seismography-specific functions
are then presented, thanks to the versatility of the Linux kernel and accompanying userland
tools, via a user-friendly web-based interface that can be accessed over any IP network on
any web-capable device like general smart phones. Remote configuration, with proper access
controls, is also provided through the interface.
