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This drone could help inspect flooded infrastructure

Peter Sayer | Sept. 4, 2017
With dozens of drones showing up in the skies over flooded Houston, Texas, here's one drone that could help without contributing to the aerial gridlock.

The U.S. Federal Aviation Authority has granted special permission for the use of drones to help relief efforts in Houston, Texas, in the aftermath of Hurricane Harvey.

At the IFA trade show in Berlin, PowerVision is demonstrating a drone that would need no authorisation from the FAA to play its part.

That's because the PowerRay is an underwater drone. It's almost half a meter long, equipped with a 4K video camera that can be monitored on a virtual-reality headset over Wi-Fi, and powerful spotlights for penetrating the gloom 30 meters down.

powerray side
Peter Sayer/IDG. The PowerRay underwater drone can operate down to depths of 30 meters for up to four hours on one battery charge.

It's piloted using what looks like a wireless game controller, and can maneuver at speeds of up to 1.5 meters per second (3 knots). Its 6400 mAh battery will keep it going for up to 4 hours if you don't push it too fast.

If the battery does go flat while the PowerRay is underwater, all is not lost: You can simply pull on its cable to bring it back up, as long as it's not snagged on something.

Yes, although the controller is wireless, radio waves don't pass through water all that well, so a cable is needed to carry signals between the drone and a Wi-Fi base station that stays on the surface. This relays instructions down a 70 meter cable, and retransmits the video signal the drone sends back up.

powerray video feed
Peter Sayer/IDG. PowerVision piped video from a PowerRay underwater drone in water-filled shipping container to a large screen nearby at the IFA 2017 trade show in Berlin.

PowerVision couldn't fit a 30-meter deep tank on its stand at IFA, so it's demonstrating the PowerRay in a water-filled shipping container in the parking lot, and showing the video on giant monitor nearby.

The drone is designed to operate in fresh, salt or chlorinated water, streaming video at 1080p and recording it in 4K UHD. It can also record 12-megapixel still images at up to 5 frames per second on its 64 GB of internal storage.

powerray controller
Peter Sayer/IDG .The PowerRay underwater drone is piloted with what looks like a wireless game controller.

The PowerRay measures 465 x 270 x 126 millimeters, and weighs around 3.8 kilograms. PowerVision is selling a kit including the drone, base station, power supplies, wireless controller and two Zeiss VR One Plus headsets for around €2200 (US$2600).

powerray base station
Peter Sayer/IDG .The PowerRay underwater drone connects via a 70-meter cable to its wireless base station, which remains on the surface.


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