Airport noise monitoring

Air traffic is the source of several forms of disturbance to the surrounding area, including, in particular, noise pollution. Local residents in the vicinity of an airport are the most severely affected and are very conscious of the aircrafts’ flight paths and the impact on their day-to-day living conditions.

Noise and flight path management is a major concern for airport managers. Many countries have therefore implemented regulations imposing noise and flight path monitoring systems in order to:

  • monitor and manage noise and flight paths,
  • manage activities and improve communication between the various parties involved,
  • respond to complaints from neighbouring communities by offering a factual analysis of the situation,
  • evaluate possible improvements.

01dB is the market leader in France, offering a fully automated and comprehensive noise and flight tracking management solution with a high level of reliability. Made up of approved DUO or CUBE smart noise monitors and the AEROVISION supervision web service, this solution enables airport managers to participate in sustainable development policies according to environmental noise.

These complementary and innovation-packed systems offer harmonized and intuitive interfaces so as to ensure major time-savings for users.

Key points

Metrological perfection

  • weatherproof microphone
  • G.R.A.S. exclusivity
  • calibrator automatic detection
  • self-check system based on charge injection
  • acoustic nose cone
  • IEC-61672 Class 1 certified by LNE, PTB and METAS



Features

01dB ecosystem

The 01dB ecosystem is all about synergy between the products in its new range. ORION, FUSION, DUO, CUBE: 4 units, 4 fiels of application but one single ecosystem focused on improving your productivity. To this end, they all operate in the same way with respect to the integrated keyboard and Web interface. They use identical data processing software. And they all share the same accessories.

Innovative characteristics

DUO has innovative characteristics never before achieved by any producer in a single device:

  • rubber grip for better handling
  • colour screen perfectly legible in direct sunlight
  • 3-key pad for simplified operation

Users now no longer need to choose between two systems. DUO is the right choice every time.

Regulatory metrology

DUO has obtained the following CEI-61672 Class-1 certification:

  • France: type certification No. LNE-21674 Rev 0 of 21 July 2011 issued by LNE (Laboratoire National de métrologie et d’Essais
  • Germany: type certification No. PTB-1.63-4052726 of 6 February 2012 issued by the PTB (Physikalisch-Technische Bundesanstalt)
  • Switzerland: type certification No. CH-A3-120296-00 of 31 February 2012 issued by METAS (Bundesamt für Metrologie)
  • Portugal: type certification No. 245.71.12.3.15 of 30 July 2012 issued by Instituto Português da Qualidade, I.P.
  • Spain: type certification No. 111839001 of 9 March 2015 issued by Centro Español de Metrologia (CEM).

Spain: type certification No. 111839001 of 9 March 2015 issued by Centro Español de Metrologia (CEM).

Users now no longer need to choose between two systems. DUO is the right choice every time.

Calibration and verification

To simplify the installation of DUO on the site, a function for the automatic detection of a calibration acoustic source allows the performance of a calibration and adjustments without the user needing to do anything more than switch the device on. Furthermore, to ensure proper operation, an integrated measurement-chain verification system performs periodic checks. Electrical verification allows the testing of the entire measurement chain, including the microphone. It consists of injecting an alternating sinusoidal load on the microphone’s terminals at the selected frequencies at one or two levels. The principle is to read reference values and check the deviation with respect to other measured values over time.

Communication

DUO natively integrates several modules for communications with external terminals:

  • Direct USB connection
  • Ethernet network (RJ45 cable)
  • Point-to-pointWi-Fi network
  • Point-to-pointWi-Fi network

With a communication device (smartphone, tablet, PC…), the user can take control of the DUO using a simple Internet browser. DUO incorporates a web server called dBDUO, which provides access to all device functions (configurations, coding, acoustic calibration and electrical verification, real-time display of instantaneous values…). Connection can be made wirelessly either in Wi-Fi mode or using the 3G modem.

Events module

DUO incorporates two very advanced event detection modules.

  • Basic module: the user can define an event, comprising a trigger that can be programmed over a maximum of 24 time periods. All settings (overall level, spectral level, rolling Leq, weather settings, etc.) instantaneously stored in the logging interval can be used to define the trigger. The event can be activated according to the days of the week and will trigger different actions: sending of a customized text message, recording of the audio signal, triggering of a parallel recording with a fine logging interval, TTL output, etc.
  • Expert module: with this option, up to five events can be programmed, each comprising a combination of logic statements (“AND” or “OR”) for several triggers (max. five).