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Design and Development
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NASA ‘Smart SPHERES’ Tested Successfully on International Space Station
A free-flying robot on the International Space Station successfully gathered and delivered motion data to its astronaut handler for the first time via a new smartphone controller.
By Robotics Trends' News Sources - Filed Dec 23, 2011

International Space Station researcher Mike Fossum, commander of Expedition 29, puts one of the Smart SPHERES through its paces. The inset image shows the Samsung Nexus S handset that helps turn the SPHERES into mobile data acquisition assistants for space explorers. (Credit: NASA)

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The Human Exploration Telerobotics project, one of NASA's new, high-valueTechnology Demonstration Missions, equipped the compact, free-flying satellites -- known as Synchronized Position Hold, Engage, Reorient Experimental Satellites, or SPHERES -- with a Samsung Nexus S handset that features Google’s open-source Android platform. 

Each volleyball-sized SPHERES has its own onboard power, propulsion, computing and navigational software. Adding the smartphone transforms the satellite into a free-flying robot, complete with a compact, low-power, low-cost embedded computer and built-in cameras and sensors to enhance and expand robotic operations. 

Minor modifications were made to the smartphones, including removing the GSM cellular communications chip to avoid interference with station electronics, and replacing the standard lithium-ion battery with AA alkaline batteries. Otherwise, the smartphone is identical to the off-the-shelf consumer device. 

The ongoing experiment demonstrates how Smart SPHERES can serve as remotely operated assistants for astronauts in space. In coming months, these compact assistants will conduct interior station surveys and inspections, capturing mobile camera images and video. NASA also plans to simulate external free-flight excursions and in time will test whether the robots can handle other, more challenging tasks. 

"The tests that we are conducting with Smart SPHERES will help NASA make better use of robots as assistants to and versatile support for human explorers -- in Earth orbit or on long missions to other worlds and new destinations," said Terry Fong, project manager of the Human Exploration Telerobotics project and Director of the Intelligent Robotics Group at NASA's Ames Research Center in Moffett Field, Calif. 

The Nexus S phone is the first commercial smartphone certified by NASA for use on the space station. Each smartphone is connected to a SPHERES free-flyer via a cable. A wireless network connection (Wi-Fi) to the space station's computers provides the data path to the ground. NASA anticipates using other types of smartphones on the station in the future. 

SOURCE: NASA

RELATED: Read more about NASA's SPHERES experiment here; a video from the November test is available here; a Google video that highlights NASA's use of open-source Android™ software is available here

 


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