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CAE - Wind Turbine Microphone Array Acoustic Camera
The acoustic camera with the special wind turbine microphone array suits perfect with its big diameter of 500 cm for very low frequency sound sources. The 40 microphones are making sound visible and are localizing noise exactly from 50 Hz. The optimized microphone distribution guarantees a perfect sound source localization and a high dynamic range. Although the system has a diameter of 500 cm dismounted it can be convoyed in a car. Setup time is about 30 min. Typical applications are wind power plants, industrial facilities and environmental measurement.
- size of the acoustic camera: 5000 mm
- specifications of the acoustic camera: <33 dB to 120 dB with up to 40 dB dynamic
- number of microphones of the acoustic camera: 40 MEMS-microphones, 24 bit resolution, sample rate 48 kHz, frequency range 10 Hz - 24 kHz
- recommend frequency range of the acoustic camera: from 50 Hz with beamforming-methods; below with decreased resolution°
- material of the acoustic camera: aluminium
- weight of the acoustic camera: 75 kg
The data acquistion system is a National Instruments embedded-controller with real-time operating system and FPGA.
- Number of channels: 40
- Samplerate per channel: 48 kS/s
- Resolution: 24 bit
- Synchronous sampling: Yes
- Interface to PC: Ethernet
- Fanless: Yes
- Additional inputs: Trigger, Tacho (RPM)
- Powersupply: 12 V
- Consumption: < 7 W
- Dimension: 23 cm x 18,5 cm x 5,8 cm
- Weight: 2 kg
The Noise Inspector software is the standard solution for visualizing sound sources. The application-oriented software guides you from data acquistion to analysis to saving and reporting of acoustic data.
- Online- and offline analysis
- Acoustic-photo und acoustic-video
- A lot of HD algorithms: Beamforming, EVOB, CLEAN SC, MUSIC, Capon, DAMAS, Real 3D Beamforming,...
- Frequency analysis and time-frequency analysis (sonogram)
- Acoustic weighting (A, B, C) or linear presentation
- Open interface to Matlab for own algorithms
- Easy export of terce/octave, measurement, acoustic-photo and acoustic-video
- Playback of local sound
The following accessories are available for this system:
- Calibrator adapter
- Battery
- Notebook or Tablet
- Flight case
- Windshields
The Breakout Box extends the data acquisition system for connecting ICP/IEPE and analoge sensors the Frontend.
- Number of channels: 8 to 40
- Sensor interface: ICP, IEPE and analog sensors single switchable
- Input voltage: ± 5 V
- Samplerate per channel: 48 kS/s
- Resolution: 24 bit
- Synchronous sampling: Yes
- Interface: Connection to I²S Frontend
- Fanless: Yes
- Powersupply: 12 V
- Consumption: < 1 W
- Dimension: 14 cm x 7,5 cm x 5 cm
- Weight: 0,5 kg
