A hi-tech, intelligent solution

With its spill warning and rainfall data functions, OnSite's The Living Web system looks set to change the way that companies monitor the performance of sewerage assets.

ONSITE SAYS its The Living Web system will “revolutionise” the way water companies monitor the performance of their sewerage assets by providing them with an intelligent flow monitoring solution for short-term, long-term and permanent applications.

The Living Web can not only warn of an impending CSO spill, but also provide crucial additional flow and rainfall data to help the end user determine if the spill is EA-compliant or not by simply logging on to The Living Web from a desktop.

By integrating mapping, operational and flow data into one common platform, OnSite says it can provide the power to view operational data, as it happens, without the huge capital outlay necessary to set up your own high maintenance SCADA (Supervisory Control And Data Acquisition) system.

The Living Web does not just alarm in the event of a CSO spill. The application of complex algorithms, which relate rainfall data, system status, and hydraulic conditions, means that the end user only receives alarms when appropriate.

This enables the platform to attach priorities to alarming, and differentiate between a spill during heavy rain and the dry weather spill.

Alarms can be set up for any eventuality, triggering notification by text, email or phone call to pre-programmed recipients whether they be water company engineers or residential / industrial property owners and dwellers.

Next level

Multiple depth and velocity sensors provide highly accurate flow data, automatically uploaded to The Living Web server every hour using GPRS wireless networks via the advanced in-road antenna. The ATEX-approved dual velocity and depth sensors minimise data loss and improve data accuracy, effectively eliminating false alarms. The integration of a digital float switch provides further confirmation of an imminent spill.

OnSite’s OS1000, double barrel rain gauge, is used for the collection of real-time rainfall data and calibration of Met Office radar data. Web enabled, the gauge streams data wirelessly via GPRS directly to The Living Web server.

By introducing radar rainfall data to The Living Web platform, OnSite can take water utility management to the next level. Not only can companies track storms from a distance, they are also able to determine rainfall volumes and intensities allowing flooding events to be predicted before they happen.

Radar rainfall data is uploaded every five minutes and spatially distributed over The Living Web GIS. The Living Web tools use data from OnSite’s OS1000 Ground Truth dual tipping bucket rain gauges, to accurately calibrate the uploaded radar rainfall data.

Also, companies can create and extrapolate hundreds of Virtual Rain Gauges using a single Ground Truth Gauge, by converting radar reflectivity (dBZ) into useable rainfall intensity data (mm/hr).

It is possible to then determine if a CSO overflow can be attributed to a specific rainfall event.

The Living Web was developed using an enterprise database, it is straightforward to interface existing SCADA and GIS platforms using industry standard protocols, getting existing data to the web even faster. The platform has been designed around a GIS system, allowing companies to overlay infrastructure assets such as sewers, highways, buildings, and even radar rainfall data.

By linking directly into a company’s existing GIS platform, utility data can be hosted on the web, using this licence-free solution.

Utility asset mapping interfaces with web enabled field data loggers, allowing you to view data as an additional layer on your GIS system.


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