Noise Monitoring Stations

1. Noise Monitoring Stations January, 2011 Canada Environmental Noise Seminar Dalimar Instruments

2. Installation Checklist Portable, Semi-Permanent or Permanent Power – AC or battery w/solar Meteorological Sensors Communication Ease of service Security

3. Portable Installations Watertight case with batteries (1-2) 21Ahr batteries (1) 100Ahr battery Tripod Microphone protection shroud Extension cable Software Security Chain / Padlocks

4. 1 Week Unattended Monitoring

5. Permanent Installations Outdoor microphone/preamplifier Automated calibration via actuator Heavy duty mount Weather sensor integration Solar charging option GPS time sync Remote communication Security

6. 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

7. 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

8. Mounting – Semi Permanent 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

9. Mounting – Permanent 17’ Tilt-Down Pole Mounted to concrete pad 20’ Microphone Height Adapters for weather sensors and solar panel

10. Ease of Service One man operation Tilt-down pole for calibration and service of outdoor microphone Desiccant condition viewing window

11. 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

12. 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)

13. NEMA Enclosure Protects against environmental elements Fiberglass construction – allows passage of wireless comm Allows viewing of SPL and data AT SITE

14. Security Specially licensed security screw for EPS031 and EPS032 EPS033 Security Lock on EPS031 or EPS032 enclosure Lock on tilting mechanism on TRP019 Pole

15. Weather Sensor Integration Temperature / Humidity Wind Speed & Direction Rainfall

16. 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

17. Combined Weather Sensors • Ultrasonic Wind Sensor • Temperature and humidity • Rainfall and Hail • Barometric pressure • USB connection to 831 • Data integrated in 831 logging data

18. 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

19. Logging Meteorological Data Parameters “logged” in Time History Min/Max/Average values stored in each Interval

20. 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

21. 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

22. Communication Options Direct – USB, USB extender + intranet, RS-232 Analog Modem Wireless Model (EDGE) ADSL

23. USB Extenders / Intranet 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

24. RS232 Serial port CBL117 Null modem to PC DVX008A to 831 Host port Speed 4.5 Kbytes/s at 115200 3.5 Kbytes/s at 57600 Wireless RS232 2 modems RF Modem CDMA

25. Analog Modem Analog Modem (MDMUSB-A) POTS line (plain copper end to end) No VOIP compression Speed 1.5 to 4.5 Kbytes/s Call from modem in PC Same “sound” as fax Software SLM Utility-G3 DNA / DNA Remote

26. Wireless Communication

27. Wireless Modem 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 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

28. (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

29. 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

30. 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)

31. Conclusions Environmental protection / security Critical Questions Battery Life Power Supply Multiple Communication Options leverage current technologies Software – manual to fully automated operation

32. Thank You Questions? Dennis Pramas Acoustics Hellas Tel: 210 6630333 eMail: dpramas@acoustics.gr