Semi-Permanent Noise Monitoring
Jonathan Chui and Azar Sagiyev, Stantec Consulting Ltd.
Semi-permanent noise monitoring equipment with remote access has been available for at least a decade, but the technology has evolved with advances in internet speed and wireless connectivity. Early on, we spent considerable time setting up an account with the wireless service provider and many hours struggling with the cell modem IP configuration. This has improved recently.
While permanent noise monitoring systems are common for airport authorities and marine port authorities in large Canadian cities, semi-permanent systems have been effective for noise monitoring in short-term construction and operation industrial activities. Most semi-permanent noise monitoring systems consist of the following main components:
While permanent noise monitoring systems are common for airport authorities and marine port authorities in large Canadian cities, semi-permanent systems have been effective for noise monitoring in short-term construction and operation industrial activities. Most semi-permanent noise monitoring systems consist of the following main components:
- Sound level meter, pre-amp and microphone
- Weather station
- Power source (i.e., AC and/or DC power)
- Cell modem
- Data storage
- Providing continuous noise monitoring for intermittent events with unplanned schedules (e.g., construction activities)
- Reducing multiple visits to the monitoring site, especially for remote locations
- Giving easy access to real-time noise monitoring results for users (e.g., clients, consultants, other stakeholders) via the internet
- Providing a noise threshold exceedance alert (i.e., SNS message) for immediate corrective action
- Providing sufficient data-sampling
- Automating the reporting process
- Data transmission is limited by cell coverage (satellite data providers are available but at significantly higher cost)
- Connectivity can be intermittent in remote locations
- Remote (e.g., cloud) data storage of audio recording is limited by connectivity
- Continuous power sources may be required in some systems
- Post-processing and data management can be labour-intensive due to the large amount of collected data
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