Detection of movable ground areas of a robot's environment using a transducer array
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United States of America Patent
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Jul 11, 2017
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Aug 10, 2015
filing date -
Aug 10, 2015
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Abstract
An example method for detecting a movable element on a surface involves receiving, from a depth sensor coupled to a mobile robot, a first depth measurement between the depth sensor and a ground surface. The method also involves causing at least one transducer coupled to the mobile robot to emit a directional pressure wave toward the ground surface. The method further involves receiving, from the depth sensor coupled to the mobile robot, a second depth measurement between the depth sensor and the ground surface after emitting the directional pressure wave. Additionally, the method involves identifying one or more differences between the first depth measurement and the second depth measurement indicating that the ground surface includes a movable element. Further, the method involves providing navigation instructions to the mobile robot based on the identified one or more differences between the first depth measurement and the second depth measurement.
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