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Automated environmental noise monitoring station
The Cambri NSD2291 environmental noise monitoring station incorporates all-weather outdoor sound transducer unit (free-field electret microphone, wind foam and bird spike), class 1 sound level meter, data processing and transmission unit, power supply unit (mains, battery or solar powered, selectable) and instrument enclosure, to achieve accurate measurements of indoor/outdoor noise level and 1/1 or 1/3 octave noise spectra. Microphone therein can be calibrated either through an embedded HV electrostatic actuator, or manually through a reference sound source. Another mems microphone can record sound clips (1 - 6 s duration, selectable) once the measured sound level exceeds a preset threshold.
The NSD2291 monitoring station is low-power and compact, and is therefore very easy to transport, install and/or service. We also provide a customer platform where the deployed instruments can be effectively configured, managed and monitored, and data can be visualized, analyzed and results displayed.
Equipped with high-performance chip and the relevant sound source recognition and psychoacoustic irritability calculation modules, this monitoring station can also recognize the category of the excessive noise and calculate its irritability level.
The NSD2291 monitoring station is low-power and compact, and is therefore very easy to transport, install and/or service. We also provide a customer platform where the deployed instruments can be effectively configured, managed and monitored, and data can be visualized, analyzed and results displayed.
Equipped with high-performance chip and the relevant sound source recognition and psychoacoustic irritability calculation modules, this monitoring station can also recognize the category of the excessive noise and calculate its irritability level.
- Product Parameters
- Product Quality Control
- Product Advantages
Meteological monitor (Configurable)
It is possible to install a meteology monitoring station on top of the noise monitor to simultaneously measure wind speed and direction, air temperature, relative humidity, atmospheric pressure and rainfall intensity. Meteology and noise data are integrated at the instrument level and uploaded to the data platform altogether.
Traffic volume monitor (Configurable)
This measures total traffic flow and vehicle speeds and types, and can be installed alongside the noise monitor to assist in the monitoring/analysis of traffic-related noise. Multi-lane, multi-target tracking and detection.
The core measurement module is a self-developed and self-produced Class 1 sound level meter (type approval number 2024S016-44), whose performance complies with the regulations of GB 3785 and GB/T 17181 and is regularly calibrated.
Class 1 sound level meter in full compliance with the IEC61672: 2013 and IEC1260: 2014 standards;
ISO 1996-2:2017 Acoustics - Description, measurement and assessment of environmental noise - Part 2: Determination of sound pressure levels
Calibratable through HV electrostatic actuator or reference sound source compliant with the GB/T 15173 standard;
Extendable to monitor air quality, meteorology, traffic volume and video;
Noise source recognition through deep learning neural networks;
Works normally within -30 — 60 oC, with IP55 protection.
