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U.K. Rail Services Company Tracks Train Health Via RFID
Alstom Transport has deployed Coriel Electronics' UHF RFID-based automatic vehicle identification solution to track rolling stock in rail yards.
May 13, 2014—
For the past two years, Coriel Electronics, a U.K.-based provider of embedded electronics, has been developing a solution that employs passive ultrahigh-frequency (UHF) RFID tags and sensors to capture and transmit data regarding railcars, such as their location, and to indicate their identity in a system used for condition monitoring. Throughout that time, the company's products have been used by its customers to identify railcars and components on those cars requiring maintenance. Once such customer is Alstom Transport, a France-based manufacturer (with global operations) that produces railroad infrastructure and rolling stock, and also provides maintenance services to the rail sector. Beginning this spring, several rail-infrastructure owners will begin undertaking pilots intended to determine if RFID technology can help manage the conditions of cars using their tracks, as well as monitor the speed of a train as it passes readers installed on those tracks.
Coriel's rail automatic vehicle identification (AVI) solution consists of the firm's DcTrak software, which manages read data, as well as its TrakStar RFID readers, installed at key locations within rail yards or adjacent to rail tracks, and linked to system sensors, such as axle counters and speed-detection systems. The technology is being used, in some cases, to capture the history of conditions related to a specific railcar, or a particular axle on that car, as it passes the reader and sensors.
University of Nottingham Innovation Park (but not affiliated with the school), was founded in 2008 to provide electronic design for microcontrollers and processors, high-speed serial interfaces, sensors, and Bluetooth and RFID solutions, as well as software to manage those systems. The founders have a background in telecommunications, electronics and software, while their customers are typically manufacturers of telecom electronics products and other devices (such as MP3 players) that employ embedded electronics.
These systems measure a range of conditions, from component temperatures to vibrations. Coriel provided Omni-ID Grip passive UHF EPC Gen 2 RFID tags, which were mounted to the undersides of railcars, as well as its own TrakStar 400 readers. Each interrogator is mounted in a protective case, along with four reader antennas, installed between the rails on the tracks used to transport cars to and from maintenance areas. The Grip, a rugged tag encased in polycarbonate and rubber, is made with an Alien Technology Higgs3 chip containing 96 bits of Electronic Product Code (EPC) memory and 512 bits of user memory. A condition-monitoring system, mounted at the same location where the reader is installed, transmits measurements in conjunction with the RFID data to Alstom's own software system, for analysis and operations.
The TrakStar 400 system includes onboard activation sensors and a heating system (for use during harsh winters) that is installed between the rails on a track on which the cars are received, moved and serviced. As a train approaches the reader, its onboard sensors awaken that device, which then captures the car's RFID tag ID number and alerts the condition-monitoring system to commence operation.
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