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公开(公告)号：US20170308099A1
公开(公告)日：2017-10-26
申请号：US15492099
申请日：2017-04-20
Inventor： Jin Oh KIM , Sang Ok SEON
CPC classification number: G05D1/0676 , B64C17/06 , B64C27/08 , B64C39/024 , B64C2201/123 , B64D45/04 , G01S7/521 , G01S15/08 , G01S15/87 , G01S15/88
Abstract: An unmanned aerial vehicle (UAV) is provided. The UAV includes a main body, a plurality of motors connected to the main body, each of the plurality of motors having a rotor blade, a plurality of ultrasonic sensors located at least one of the plurality of motors and the main body, and transmitting and receiving ultrasonic waves to and from a ground surface, and measuring distances from the ground surface, a gyro sensor disposed at the main body and maintaining the UAV in a horizontal state, and a controller disposed at the main body, detecting an unevenness of the ground surface based on the distances from the plurality of ultrasonic sensors to the ground surface, generating a control signal whether to land on the ground surface or not in response to the detection of the unevenness, and transmitting the control signal to the plurality of motors.
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公开(公告)号：US20200233070A1
公开(公告)日：2020-07-23
申请号：US16682043
申请日：2019-11-13
Inventor： Jin Oh KIM , Sung Gu LIM
Abstract: An ultrasonic wave apparatus for measuring a distance according to an embodiment of the present disclosure includes: an ultrasonic sensor; and a sensor housing having the ultrasonic sensor mounted on an end therein, having a guide conduit formed in a longitudinal direction, and having a reflective wall connected with the guide conduit and positioned opposite the ultrasonic sensor, in which wedge patterns having a wedge angle may be formed on an inner surface of the guide conduit to increase directivity of an ultrasonic signal that is generated from the ultrasonic sensor.
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