Transcript IMI Sensors Div. PPT template

Noise Monitoring
Stations
January, 2011
Canada Environmental Noise Seminar
Dalimar Instruments
Installation Checklist
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Portable, Semi-Permanent or Permanent
Power – AC or battery w/solar
Meteorological Sensors
Communication
Ease of service
Security
Portable Installations
• Watertight case with batteries
– (1-2) 21Ahr batteries
– (1) 100Ahr battery
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Tripod
Microphone protection shroud
Extension cable
Software
Security Chain / Padlocks
1 Week Unattended Monitoring
Permanent Installations
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Outdoor microphone/preamplifier
Automated calibration via actuator
Heavy duty mount
Weather sensor integration
Solar charging option
GPS time sync
Remote communication
Security
Outdoor Microphone
• Designed for reliable long-term
operation
• Free Field or Random Response
• Remote calibration via
electrostatic actuator
• Bird spikes, rain hat and UV
treated windscreen
• Internal temperature and
humidity sensors**
• Window to view desiccant
condition
Electrostatic Actuator
• Daily check on NMS operation
• Voltage applied to diaphragm
of microphone (simulates SPL)
• Output of microphone
compared against reference
value
• Automated at quietest time of
day
• Calibration history stored
Mounting – Semi Permanent
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Heavy Duty Steel Tripod
Up to 20’ Microphone Height
Adapts to un-even ground
Guy wires to secure against
high winds
• Feet staked to ground
• Adapters for weather sensors
and solar panel
Mounting – Permanent
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17’ Tilt-Down Pole
Mounted to concrete pad
20’ Microphone Height
Adapters for weather sensors
and solar panel
Ease of Service
• One man operation
• Tilt-down pole for
calibration and service of
outdoor microphone
• Desiccant condition
viewing window
Inside the Enclosure
• Sound Level Meter can
be easily swapped for
service
• 831-INT – acts as a
docking station
• Ease of access to cables
and connections
831-INT Docking Station
• Inputs for wind speed
and direction
• Logic I/O
• Powered USB hub
• AC power input
• Solar charging input
• -ET Version (LAN)
NEMA Enclosure
• Protects against
environmental
elements
• Fiberglass
construction –
allows passage of
wireless comm
• Allows viewing of
SPL and data AT
SITE
Security
Lock on tilting
mechanism on
TRP019 Pole
EPS033 Security
Lock on EPS031 or
EPS032 enclosure
Specially licensed
security screw for
EPS031 and EPS032
Weather Sensor Integration
• Temperature / Humidity
• Wind Speed & Direction
• Rainfall
Why Measure Wind Speed & Direction?
• Wind speed increases with altitude
• Sound is “focused” on downwind side and “shadowed” on
upwind side of source
• Distances < 50m, influence is negligible
• Measure downwind for least deviation
Courtesy of B&K
Combined Weather Sensors
• Ultrasonic Wind Sensor
• Temperature and humidity
• Rainfall and Hail
• Barometric pressure
• USB connection to 831
• Data integrated in 831 logging data
Why Measure Temperature?
• Temperature gradients create effects similar to wind
gradients.
• Uniform in ALL directions
• Temperature inversions “focus” sound on ground surface
Courtesy of B&K
Logging Meteorological Data
• Parameters “logged” in Time History
• Min/Max/Average values stored in each Interval
Solar Charging
• Ideal for remote locations – no need to run power
• Solar panel charges large battery (typically stored
underground)
• Multiple size solar panels depending on climate
Battery and Panel Sizing
Battery
• Compute power consumption
• Verify max cloudiness - # of days without charging
• Check low temperature
Solar Panel
• Determine Low-Insolation worst case
• Choose solar panel size
• How fast will panel charge battery if depleted
Communication Options
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Direct – USB, USB extender + intranet, RS-232
Analog Modem
Wireless Model (EDGE)
ADSL
USB Extenders / Intranet
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USB Extender
60m / 150 ft
– IOgear GUCE51
– CablesToGo Super
Booster
100m / 328ft
– ICRON USB Ranger 110
USB Intranet Hub
– Digi AnywhereUSB
Alternatives
• Long microphone extension
cable and keep 831 close to
PC
• Long extension cable from
outdoor preamplifier to
Sound Level Meter (up to
500’)
• Power microphone and
preamp with external supply,
long direct voltage input into
Sound Level Meter
RS232 Serial port
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CBL117 Null modem to PC
DVX008A to 831 Host port
Speed
– 4.5 Kbytes/s at 115200
– 3.5 Kbytes/s at 57600
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Wireless RS232
– 2 modems
– RF Modem
– CDMA
Analog Modem
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Analog Modem (MDMUSB-A)
POTS line (plain copper end
to end)
– No VOIP compression
Speed
– 1.5 to 4.5 Kbytes/s
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Call from modem in PC
– Same “sound” as fax
Software
– SLM Utility-G3
– DNA / DNA Remote
Wireless Communication
Wireless Modem
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MDMUSB-E
– GSM SIM Card
– GPRS / EDGE technology
– Data plan
Email program with MAPI
– Eg MSOutlook or MS
Outlook Express
TCP/IP port number
– Robust, error checking
Speed
– 2 Kbytes/s
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No calling from analog or
other wireless modem
SMS via wireless when
provider does not support
SMS, but MMS via mail
SMS manually – test at
installation
(A)DSL / (W)LAN / 3G Ethernet
• 831 Docking Station with Ethernet port
– (A)DSL connection
– 3G Modem
– LAN or WLAN
Leverage standard technology
• Speed
– 50-70 Kbytes/s
• Applications
– Faster transfer speeds (large files)
– Live streaming
Automated Downloading
• DNA Remote module supports multiple connections –
analog/wireless/direct
• Can connect to multiple stations simultaneously
• User selectable download time
• Each file tagged with S/N of instrument
Software Options
• Download Utility – G3
– Manual connection
– Excel export utility
– ScreenGrabber
• Advanced - DNA
– Real time graphing software
– Post processing of data
– Automated downloading of data from NMS (remote)
• Airport – ITT / ERA AirScene
– Remote hosting of data
– Ability to sync noise data with radar tracks
– Complaint module
• SDK (Software Developer Kit)
Conclusions
• Environmental protection / security
• Critical Questions
– Battery Life
– Power Supply
• Multiple Communication Options leverage
current technologies
• Software – manual to fully automated operation
Thank You
Questions?
Dennis Pramas
Acoustics Hellas
Tel: 210 6630333
eMail: [email protected]