Vigilant User Manual
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waveforms and spectra.
Long waveforms
are stored separately, but their files also reference of
a
Snapshot
to which they are related to.
Snapshots
are stored in the mSD card as “records”. The system currently allows a maximum of 10,000
records per machine, regardless of the actual space occupied by them on the card.
VIGILANT uses a
SQL
database for data storage and classification. This database stores simplified
information, including trends of the different parameters, static measurements, speed, load, status of
the machines, etc. The system updates this database when new measurements are stored. It also
makes a periodic automatic backup of the database in the SD card, and just before shutting down the
system. This database allows the system to quickly restore the trends from the RAM when restarting
the unit.
This
Records
form allows the reconstruction of the
SQL
database by reading the
Snapshots
stored in
the flash memory. This option is useful when it is suspected that the database may be corrupted, or
when the user recovers data from a backup.
The form shows two different lists of records, one for the
Snapshots
(parameters, waveforms and
spectra) and another one for the
Long-Waveforms
.
At the top of the form, a bar graph displays the percentages of SD card memory used, for each type of
records (
Snaphosts
,
Long-waveforms
and “others”), and it shows the free space
available and the size
of the SD card.
The following table describes the data included on the
Machine
and
Long waveform
lists.
Field
Description
Machine
Shows the list of machines configured on the unit.
