- Rapid Deployment Noise Monitoring System

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The Larson Davis - Rapid Deployment Noise Monitoring System

NoiseTutor: Continuous monitoring of environmental data in remote areas has always presented a unique set of challenges. Typical solutions involve complex installations, frequent visits to remote locations to keep the system fully operational and require expert level attention to retrieve and share data amongst customers, consultants and project leads.

The Larson Davis NoiseTutor is an integrated solution, ideally suited to address the challenges of remote noise monitoring in an efficient and cost effective package. Designed for rapid deployment in a network environment, NoiseTutor provides Internet based remote control, a high speed network connection for the rapid transfer of large files, event alerts and real-time reports published directly to the end user’s website.

Highlights

  • Rapid deployment
  • Emailed reports and event notification
  • Full data for advanced analysis
  • Web publication made easy
  • Leverage existing infrastructure
  • Remote administration
  • User control of system and data

Integrated Internet Solution for Remote Noise Monitoring
Continuous monitoring of environmental data in remote areas has always presented a unique set of challenges. Typical solutions involve complex installations, frequent visits to remote locations to keep the system fully operational and require expert level attention to retrieve and share data amongst customers, consultants and project leads.

Additional economic challenges can also present themselves on projects that are shorter in duration (e.g. construction sites, wind farm commissioning, concert venues, etc.). In these instances, customers often incur the expense of a permanent installation when a simple, easily deployed, “temporary” solution is all that is required.

The Larson Davis NoiseTutor is an integrated solution, ideally suited to address the challenges of remote noise monitoring in an efficient and cost effective package. Designed for rapid deployment in a network environment, NoiseTutor provides Internet based remote control, a high speed network connection for the rapid transfer of large files, event alerts and real-time reports published directly to the end user’s website.

NoiseTutor allows for easy management of any configuration from a single system to a network of systems, each of which can be individually controlled. A sophisticated power optimization scheme provides individual system power management during low power battery operation, to avoid the loss of critical data in the event of AC power interruption.

Benefits of an Internet Connected Noise Monitoring Station

  • Speed and reliability improvements versus classical analog modems
  • Support many noise monitor connections using a single Internet connection
  • Automated reconnection without losing data when communication is interrupted
  • No specialized hardware needed
  • Flexible setup, leveraging existing infrastructure and products
  • Simplify remote monitoring of data – on site specialists no longer required

For these reasons Larson Davis has focused on a solution leveraging network communications while at the same time ensuring compatibility with existing sound level meters.

The Larson Davis NoiseTutor Solution
In a network of NoiseTutor monitoring stations each unit can be completely independent with no need for a centralized management system or an associated web server. When a monitoring unit is active, the data is collected by the NoiseTutor at predetermined intervals (e.g. hourly, twice a day, etc.) after which a graphical report is dispatched to designated mail recipients or a website.

Each NoiseTutor station consists of a sound level meter, compact industrial PC, and a rechargeable battery to provide power during AC power interruptions. A power optimization scheme allows the PC to be in “Standby” mode while data collection on the SLM continues and no transmission is required.

The NoiseTutor solution allows for easy management of any configuration from a single remote monitoring station to a network of NoiseTutor stations with automatic distribution of information. Numerous variations are available and can be activated according to the specific monitoring (events, audio, video, weather, etc.) or networking scenario.

Each monitoring unit provides, on request, a method of web-publishing with real-time customizable graphical and numerical tables. Our server application, an example of which is visible at noisetutor.pcb.com ort www.noisetutor.it, is made available for customization.

Seamless Integration
with Larson Davis Sound Level Meter Software
NoiseTutor saves data in SLMDL format which is readable with our no-cost SLMUTILITY-G3 software. Here the data can be easily viewed or exported to Excel for further analysis.

For those looking for advanced analysis features, data received via e-mail can be concatenated and processed using Larson Davis DNA Software to obtain results over daily, weekly, monthly and even annual periods together with Ldn and Lden, numerical tables, time history and spectrograms of Leq and Ln.

Real Time Publishing

The Sound Level Meter is used as a measurement front-end receiving the Leq and 1/3rd octave data every second. Reports are typically produced as 10 min, 1 hour, 1 day, 1 week or 1-month updates which are published to a website and/or emailed to designated recipients.

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The real-time mode requires internet access that can be realized in different ways. Most typical are:

  • Wired Ethernet
  • Wireless Ethernet, WiFi
  • Wireless 3G GSM

While typically users will want to be on-line 24/7, it is possible to send updates periodically and to put the PC to sleep in between. This lowers power consumption and in the case of cellular communication, the cost of transmission as well.

Real Time Publishing – Event Alert Option (SWW-DNA-NT-EV)
NoiseTutor can be configured to report noise events which can then be viewed on-line or automatically sent via email. All the information necessary to quickly and easily identify and characterize a noise event is reported. In addition, you can receive alerts on various system parameters including a low power condition. Finally, a user can listen to a sound recording for fast noise source identification.

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Off-Line

In parallel with the real-time mode, the SLM can acquire a complete data file using the full range of the SLM capabilities: time history, measurement history with 10 min interval, Spectral Ln, event recording including audio files etc. The SLM regularly generates data files which the PC will retrieve. The user can then opt to store the file on the PC or forward them to a remote ftp site.

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Using Larson Davis DNA processing software, files can be merged into a single file representing an entire month.

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As an alternative, using the 831LXTSDK library, any user can connect the data to his own software or even a corporate database.

File Size and Scheduling Options to Control Transmission Costs
Email recipients can be in the central administrative office or equipped with a smartphone in the field. During real-time operation the graphical reports can be sized to fit the user’s device and help reduce the cellular transmission costs. A typical 1-day file containing 1 second Leq with 1/3rd octave data is about 14 MB (12MB with zip compression).

Off-Line - Continuous Sound Recording Option
(SWW-DNA-NT-CS)
With the continuous sound recording option, NoiseTutor can be configured to stream audio files directly to the compact industrial PC through the AC/DC output of the sound level meter. These compressed audio files (.ogg format) can be displayed along with the time history data in DNA Software and any segment replayed with ease.

Remote Access to Noise Monitoring Station
Standard, commercially available tools can be used to administer the remote PC. It is also possible to extend the PC functionality and incorporate a directional webcam for visual identification of noise sources. Compared to other solutions, NoiseTutor gives you control over your system components and data.

Specifications

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Larson Davis, a division of PCB Piezotronics
Larson Davis, a division of PCB Piezotronics
3425 Walden Avenue
Depew ,  NY 14043

APPLICATIONS

Traffic noise monitoring - Health and Safety - Noise and Vibration

Traffic noise impacts millions of people at home and at work. Traffic noise can impact your ability to work, learn rest, play, relax, and sleep. This form of noise can also lead to mental and physical health concerns. The noise is dependent upon such issues as: Traffic volume. Traffic Speed. Vehicle Content. Road Surface. Surrounding Area.

Noise monitoring for railways and trains - Automobile & Ground Transport - Trains and Railways

Controlling and monitoring railway and train noise in residential and urban areas is a critical function of a railway. The noise generated can be dependent upon the engine, rail cars, rail construction, train speed, and the horn. Modern high speed trains have also created new levels of high frequency noise that create an acoustic disturbance that sounds like an aircraft going by.

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