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System
Description
BarnOwl®
is a complete integrated system of acoustical measurement,
signal processing, reporting and management software. Three
hardware versions for the Field Unit are available:
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Permanent
(rack mounted) - existing options include 24 bit Brüel
& Kjær acoustical hardware, or the 16/20
bit Sinus
based ‘Harmonie-PCI’
system. |
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Mobile (low power
12v operation) - using the Sinus 'Soundbook' system. |
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Industrial PC (low
power 12v operation) - using the Sinus
based Apollo PCI or ‘Harmonie PCI’ system. |
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Solar - Industrial PC solution with solar, batteries, modem on a frame. |
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Trailer - Solar Solution mounted on a trailer. |
Each hardware version
runs BarnOwl® software with the following features:
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Click
here for a pdf of this page |
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| Directional
noise measurement features |
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BarnOwl®
provides the following directional monitoring
capabilities: |
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Automatic
unattended real time noise detection
– detects sources arriving (every second)
from 72 directions (5 degree increments). |
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Fully directional
monitoring with low pass filter –
provides reports with a low pass filter (in each
5 degree increment), in addition to directional
A-weighted reporting features. |
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Real time graphical
display and reporting |
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Trigger options |
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Stand alone or networked
multiple acoustical Field Units –
access to acoustical Field Units enabled by fixed
or wireless network and by modem. |
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Configurable for
access by a SCADA or similar system |
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Flexible
noise logging features
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In
addition to directional monitoring, BarnOwl® also
provides traditional noise logging functions, but with increased
flexibility. For example, you can: |
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Record samples
of audio signal – enables WAV files to
be created at regular intervals and/or on a trigger
event. |
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Supports direct real time
listening over network connection |
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Monitor statistical noise
levels over two different time intervals (e.g.
5-minute and 15-minute intervals simultaneously). |
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Absolute Level WAV Analysis
– allows WAV files to be recorded and replayed
at relative to calibrated levels, eliminating the need
for additional ‘calibration’ of post analysed
levels. This means WAV files can be directly used for
level analysis as well as aural recognition of sources. |
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| System
management features |
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Automatic microphone
calibration – option can be performed at pre-set
intervals. |
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Archiving facility – allows
the easy saving and retrieval of database and audio
files.
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Inspect, control and download
from any monitor remotely, using a wireless Ethernet
network connection |
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Charting of Field Unit
downloads – allows graphs to be displayed
to show summary data downloaded from each Field Unit
without having to run the report generator. Displays
total noise, noise from all sources and noise from the
selected source over the last (selectable) number of
days, updated at each download. |
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| Equipment
Hardware & Software |
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Acoustical
Field Unit – Incorporates either original
24 bit Bruel & Kjaer Nexus based or 16/20 bit Sinus
Harmonie-PCI based hardware (available as permanent
rack mounted versions). The industrial PC is ideal for
permanent set ups in remote locations where mains power
is not available. The Sinus based mobile Soundbook plus
option is the most flexible and is also a low power
12v option. |
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Microphones
– Three Bruel & Kjaer outdoor microphones
with standard accessories, including 30m cables and
microphone stand to provide accurate microphone positioning
(critical for accurate source identification). |
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Temperature
Sensor |
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Field Unit
PC running Windows XP or 7 (available as
ruggedised Notebook, industrial pc or rack mounted Unit
- see photos above).
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Options
include PC Operating system Windows
2000 or XP, BarnOwl® Database, Microsoft
SQL server and Microsoft Access. |
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BarnOwl®
Field Unit software – Loads and runs
on startup.
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BarnOwl®
Inspect software – this can be
installed on the Field Unit itself; on a laptop
computer which can be directly connected to
the Unit; or on a remote computer linked to
the Field Unit via an Ethernet connection to
inspect and download data. |
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BarnOwl®
Multi-Download software – allows
automatic scheduled downloads from one or a
number of Units to a central noise server. The
database can be easily configured for access
by SCADA or similar control systems. |
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BarnOwl®
Report Generator software – allows
a variety of easy-to-read, focused reports to
be produced directly from the downloaded data
files. These reports can be easily exported
to Microsoft Word. |
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Integrated
real time audio streaming – allows
users to listen to direct audio signals over
a network connection. Software fully integrated
into the BarnOwl® Field Unit and
Inspect modules to simplify setup and user operation. |
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Custom built
trailer mounted unit
BarnOwl® Version 3 running on original
Bruel & Kjaer
based rack mounted unit
Sinus Harmonie-PCI fits any PC as rack mount
solution or slots into industrial pc
Industrial pc in protective case
Example of a remote field unit set up incorporating
industrial pc, solar panel and battery
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