Determining and using relative motion of sensor modules

    公开(公告)号:US10969786B1

    公开(公告)日:2021-04-06

    申请号:US16237915

    申请日:2019-01-02

    Abstract: A system may include sensor modules configured to generate sensor signals representative of an environment surrounding a vehicle, and a sensor configured to be coupled to the frame of the vehicle at a location spaced from a first sensor module and configured to generate sensor signals representative of movement of the first sensor module relative to a portion of the frame. The system may also include a sensor processor configured to receive the sensor signals representative of movement of the first sensor module and estimate relative motion of the first sensor module relative to the portion of the frame of the vehicle. The sensor processor may also be configured to calculate, based at least in part on the relative motion estimation, a position, orientation, and/or velocity of the vehicle, and a position of objects in the surrounding environment and/or movement of the objects in the surrounding environment.

    Imagery-based member deformation gauge

    公开(公告)号:US10796425B1

    公开(公告)日:2020-10-06

    申请号:US15257635

    申请日:2016-09-06

    Abstract: A stereo camera pair may be used to determine deformation and/or strain on a member based on differences in calculated movement of the cameras that capture images. In some embodiments, a first camera may be mounted to a first end of a member and a second camera may be mounted to a second end of the member opposite the first end. As the member bends, twists, or deforms in other ways, the deformation may be detectable based on differences in images captured by the first and second camera. This data may be used to detect possible wear or damage to the member, as a control input to a vehicle to reduce possible wear or damage to the member, as a prompt to initiate maintenance or inspection of the member, and/or for other reasons.

    Unmanned aerial vehicle descent
    4.
    发明授权

    公开(公告)号:US10088736B2

    公开(公告)日:2018-10-02

    申请号:US14863873

    申请日:2015-09-24

    Abstract: Described are systems and methods for surveying a destination as an unmanned aerial vehicle (“UAV”) descends toward the destination. To confirm that the destination is clear of objects and includes a safe landing or delivery location, such as a substantially planar surface, the UAV may capture and process images at different altitudes during the descent. Feature points of a first image captured at a first altitude may be paired with feature points of a second image captured at a second, different altitude. A homography may be computed to confirm that the paired feature points lie in the same plane and then the two images may be registered based on the paired feature points. The registered images may then be processed to determine depth information and determine if descent of the UAV is to continue or be aborted.

    Electronic landing marker
    5.
    发明授权

    公开(公告)号:US11081013B1

    公开(公告)日:2021-08-03

    申请号:US16446382

    申请日:2019-06-19

    Abstract: An electronic marker may provide an approach notification to enable people to understand and interpret actions by a UAV, such as an intention to land or deposit a package at a particular location. The marker may communicate a specific intention of the UAV and/or communicate a request to a person. The marker may monitor the person or data signals for a response from the person, such as movement of the person that indicates a response. The marker may be equipped with hardware and/or software configured to provide notifications and/or exchange information with a person or the UAV at or near a destination. The marker may include a display, lights, a speaker, and one or more sensors to enable the UAV to provide information, barcodes, and text. The marker can provide final landing authority and can “wave-off” the UAV if an obstacle or person exists in the landing zone.

    Determining and using relative motion of sensor modules

    公开(公告)号:US10209713B1

    公开(公告)日:2019-02-19

    申请号:US15381867

    申请日:2016-12-16

    Abstract: A system may include sensor modules configured to generate sensor signals representative of an environment surrounding a vehicle, and a sensor configured to be coupled to the frame of the vehicle at a location spaced from a first sensor module and configured to generate sensor signals representative of movement of the first sensor module relative to a portion of the frame. The system may also include a sensor processor configured to receive the sensor signals representative of movement of the first sensor module and estimate relative motion of the first sensor module relative to the portion of the frame of the vehicle. The sensor processor may also be configured to calculate, based at least in part on the relative motion estimation, a position, orientation, and/or velocity of the vehicle, and a position of objects in the surrounding environment and/or movement of the objects in the surrounding environment.

    AERIAL VEHICLE DESCENT WITH DELIVERY LOCATION IDENTIFIERS

    公开(公告)号:US20180364546A1

    公开(公告)日:2018-12-20

    申请号:US16110073

    申请日:2018-08-23

    Abstract: Described are systems and methods for surveying a destination as an unmanned aerial vehicle (“UAV”) descends toward the destination. To confirm that the destination is clear of objects and includes a safe landing or delivery location, such as a substantially planar surface, the UAV may capture and process images at different altitudes during the descent. Feature points of a first image captured at a first altitude may be paired with feature points of a second image captured at a second, different altitude. A homography may be computed to confirm that the paired feature points lie in the same plane and then the two images may be registered based on the paired feature points. The registered images may then be processed to determine depth information and determine if descent of the UAV is to continue or be aborted.

    Electronic landing marker
    8.
    发明授权

    公开(公告)号:US10395544B1

    公开(公告)日:2019-08-27

    申请号:US15249947

    申请日:2016-08-29

    Abstract: An electronic marker may provide an approach notification to enable people to understand and interpret actions by a UAV, such as an intention to land or deposit a package at a particular location. The marker may communicate a specific intention of the UAV and/or communicate a request to a person. The marker may monitor the person or data signals for a response from the person, such as movement of the person that indicates a response. The marker may be equipped with hardware and/or software configured to provide notifications and/or exchange information with a person or the UAV at or near a destination. The marker may include a display, lights, a speaker, and one or more sensors to enable the UAV to provide information, barcodes, and text. The marker can provide final landing authority and can “wave-off” the UAV if an obstacle or person exists in the landing zone.

    Unmanned aerial vehicle (UAV) deployment of passive control stabilizers

    公开(公告)号:US09938001B1

    公开(公告)日:2018-04-10

    申请号:US14868156

    申请日:2015-09-28

    Abstract: A passive control system can be implemented that converts an active control system on a multi-rotor unmanned aerial vehicle (UAV) to a passive control system. In the event that a system health of an active control system on the UAV is compromised, or in other instances, a passive control mechanism can be deployed to restore at least some in-flight stability. In various examples, the passive control system can monitor UAV attitude, velocity, and position to determine an active control system health. In other examples, the passive control system may receive an indication from the active control system itself. In some examples, the passive control mechanisms may include increasing an offset of a center of thrust and the center of gravity of the UAV. In other examples, the passive control mechanisms may include deploying control surfaces that induce a drag force that impedes translational and rotational movement.

    UNMANNED AERIAL VEHICLE DESCENT
    10.
    发明申请

    公开(公告)号:US20170090271A1

    公开(公告)日:2017-03-30

    申请号:US14863873

    申请日:2015-09-24

    Abstract: Described are systems and methods for surveying a destination as an unmanned aerial vehicle (“UAV”) descends toward the destination. To confirm that the destination is clear of objects and includes a safe landing or delivery location, such as a substantially planar surface, the UAV may capture and process images at different altitudes during the descent. Feature points of a first image captured at a first altitude may be paired with feature points of a second image captured at a second, different altitude. A homography may be computed to confirm that the paired feature points lie in the same plane and then the two images may be registered based on the paired feature points. The registered images may then be processed to determine depth information and determine if descent of the UAV is to continue or be aborted.

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