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RFID Helps Measure Salting Needs for U.K. County Road
The Mayflower Smart Control system uses Libelium's ZigBee-based Waspmote sensors to capture weather-related data for road-management decisions in England's Hampshire County.
May 02, 2017—
The Hampshire County Council (HCC), in southeast England, is evaluating the results of a "smart winter service" road-management system trial in which Internet of Things technology automatically recorded the road surface temperature conditions on a busy thoroughfare, to help validate de-icing treatments. The system, which uses ZigBee-based RFID technology, as well as ultrasonic sensors, was piloted throughout the 2016–2017 winter season to determine if road and ambient temperatures could be accurately captured in real time, as well as whether that data could be used to make roadwork decisions.
The system is provided by Mayflower Smart Control, with infrared-based road surface temperature sensors, as well as Libelium solar-powered Waspmote Plug & Sense! Platform ambient temperature sensors. The technology was installed at five locations along 40 kilometers (24.9 miles) of a high-priority gritting (salting) area in the Winchester section of Hampshire County.
During the past winter, counties throughout England saw an uptick in requirements for salt to melt snow on ice and roads. Altogether, English councils ordered 1.3 million tons of salt for the winter season, which was about twice the amount used the previous year. As roads become busier, the need for optimum salting treatments increases, according to Libelium, the technology provider. De-icing salt has economic and environmental costs, and HCC wanted to ascertain if new, lower-cost technology would help automate the process of collecting data regarding road conditions, so that gritting could be provided as soon as it is needed, in appropriate amounts. Without such technology, county councils must check weather forecasts and conduct physical inspections to identify the need for road surface treatment.
HCC worked with Amey—its highways maintenance partner, which manages vital infrastructure and business services across the United Kingdom—to create a solution. Amey helped to identify a system from Mayflower Smart Control, which was already providing lighting control on the county streets.
The system consists of Mayflower Smart Control street-lighting controls connected to Libelium WaspMote Smart Agriculture PRO sensors, and Wintersense road surface temperature sensors, which together provide temperature readings on the road surface itself and in the air around the road. Mayflower installed the five Libelium WaspMote sensors in October 2016, says Muhammad Ali, Mayflower Smart Control's senior product-development engineer. While only a handful of sensors were installed this year, he says, a single Mayflower gateway unit can control up to 500 lighting-control ZigBee nodes, so the system can easily be expanded using the existing Mayflower gateways.
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