Electrosonic upgrades 12-screen videowall at L.A. traffic facility
Paul Milligan, February 27, 2013
Caltrans District 7 has chosen Electrosonic to create a brighter, more reliable videowall for traffic monitoring, as part of the first phase of a multi-phase AV system upgrade at its Los Angeles facility.
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“Caltrans District 7 has more than 400 cameras on the highways of Los Angeles and Ventura counties,” says Electrosonic project manager Guy Fronte. “They can review camera feeds 24/7 in the facility and when there’s a traffic event – road damage or an accident – they can magnify that feed on the videowall. The videowall is integral to 24-hour traffic management.”
The existing videowall comprises a 12-screen centre unit in a 4×3 configuration flanked by a pair of 6-screen 3×2 units. The wall features 80in diagonal screens in the centre and 52in screens on the sides.
The standard format of the wall has single-camera feeds on the side screens and 2×2 graphic traffic patterns on the centre screen with single-camera feeds surrounding them.
“They monitor heavy traffic volume locations and can bring any one of those feeds up on the larger central display as needed,” Fronte explains.
The wear and tear of more than five years of constant operation had taken their toll on the existing rear-projection engines and begun to degrade the facility’s ability to monitor traffic, so Electrosonic replaced the videowall engines with Christie one-chip SXGA displays to take advantage of improved projector quality.
Christie RPMSP-D132U displays were selected for the centre screen and RPMX-D132U displays for the side screens.
The side projectors were installed in existing cabinets behind the videowall; the centre projectors were placed in a metal framework previously built by Electrosonic.
The primary challenge for the installation was working in conjunction with the 24/7 hours of the facility. “We couldn’t take down the wall during rush hours, so we swapped out one projector at a time to allow for continuous operation,” Fronte notes.
Videowall control is achieved using a Quantum processor previously installed by Electrosonic. The Crestron touchscreen control system that operates the wall, turns the system on and off and monitors lamp life, was modified to accommodate the new projector engines.