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RFID Helps Soccer Teams Keep Their Eye on the Ball, and Their Players
The system, using active tags and readers from Fraunhofer IIS, tracks the real-time locations and movements of players and balls on the field, enabling coaches, referees and spectators to analyze players' performance.
Mar 13, 2012—Local soccer clubs in Nuremburg are testing an RFID-based system provided by the Fraunhofer Institute for Integrated Circuits (IIS), an applied research organization, that follows the movements of players and balls in order to provide automated score-keeping during games, as well as training beforehand. The system, known as RedFIR, enables team managers, trainers and referees to track the locations and movements of players and balls on the field, and thereby determine whether a goal is scored, as well as (in the case of training) how well players perform and whether they may require additional guidance.
The solution has been tested in Ireland with rugby players at Donnybrook Stadium, and is currently being trialed by local soccer clubs at Nuremberg's easyCredit-Stadion (formerly known as Frankenstadion), where the FIFA World Cup Soccer games were held in 2006. Fraunhofer IIS is now seeking partners to market the solution in Europe, as well as globally. In the meantime, says René Dünkler, Fraunhofer's technology marketing director, soccer clubs will continue testing the system with their own players.
With the RedFIR system, each player wears one or more battery-powered RFID tags, manufactured by Fraunhofer. The tags can be attached around one or both of the player's ankles, over the shin guard, or attached to that individual's shirt. Each device beacons a unique ID number at a rate of several hundred transmissions per second, using a proprietary air-interface protocol. At Frankenstadion, Fraunhofer installed 12 readers around the field that capture each tag's 2.4 GHz signals. The readers then forward the IDs via a wired connection to a PC, where Fraunhofer software calculates each device's location based on triangulation and the time difference of arrival (TDOA) of a tag's signal. Another RFID tag is embedded inside a soccer ball, and transmits more frequently—approximately 1,000 times per second—in keeping with the higher rate at which the ball moves, compared with each player's speed. The software can then provide data indicating where players are located at any given time during a game, and can enable coaches and referees to better understand what occurred during particular plays. For example, video footage can show much of what is happening in the vicinity of a ball in play, but the RedFIR system displays where every player was located on the entire field, as well as which players were within contact of each other, where the ball was located and the exact time at which it reached the goal.
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