By Claire Swedberg
Sept. 26, 2011—When a 60-foot-long ship crosses the stage during a play produced by
Sight and Sound Theatres, the vessel's location, as well as the positions of nearby props, will be tracked using
ultra-wideband (
UWB)
RFID technology. The movements of properties and pieces of the set can be fully automated, the theater company reports, thereby ensuring a more realistic effect, while also eliminating the need for manual control. The RFID solution, provided by tracking and navigation technology firm
iTrack, includes UWB technology provided by real-time location system (
RTLS) company
Time Domain, which will ensure that no prop moves off course or becomes at risk of colliding with another object on stage.
Sight and Sound Theatres brings Bible stories to stages in Lancaster County, Pa., and Branson, Mo. The Lancaster theater seats more than 2,500 patrons. According to the theater company, the productions are collectively known as the "Christian Broadway," and each can include everything from music and dancing to live animals and large moving props, as well as other special effects. To manage the movements of such props as a giant ship used for the story of Jonah, the company is employing a motion-control system produced by
Niscon, incorporating omni-directional drive units from
Vehicle Technologies (Vetex).
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Jon Hedges, Time Domain's director of sales and marketing
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In large-scale theatrical productions, stage managers must typically track the movements of props, and send cues to actors and stage personnel in the event that something must be adjusted on stage during a performance. "The challenge of moving sets autonomously on the Sight and Sound Theatres stage presented a hurdle that wasn't easily solved," explains Warren Keeney, the theater company's principal electronics designer.
The combined solution from iTrack, Vetex and Niscon, Keeney says, will enable Sight and Sound Theatres to have its set pieces move autonomously in any path onstage. That, he predicts, "will bring about a new level of technical theater."
One version of the iTrack TNS-400 Tracking & Navigation System, which includes a battery-powered
tag approximately the size of two packs of cigarettes, was originally developed for the defense industry, and will be used by a defense contractor to track the locations of tagged items, says Jerry Atkinson, iTrack's CEO. The TNS-400 system was customized for the entertainment sector by iTrack's president, Edzko Smid, to provide production companies with the precise position of every moving object or person on stage, as well as the ability to autonomously control any motorized props. However, no actors will be tagged during the Jonah production.
The entertainment version of the TNS-400 system includes the Autonomous Vehicle Controller (AVC) module, a battery powered
RFID tag containing
sensor devices that can be attached to a prop in order to track its location, and thus provide automated stage-management systems with the data necessary to control that object's movements. The module has a built-in Time Domain circuit board and a UWB RFID
chip, as well as sensors consisting of an
accelerometer, a gyroscope and a magnetic compass.