Delivery drop platforms, tethers, and stabilization
First Claim
1. An unmanned aerial vehicle (UAV) configured to deliver an item to a delivery destination, the UAV comprising:
- a plurality of motors to generate thrust for the UAV;
a power source to selectively provide power to the plurality of motors, the plurality of motors operating the UAV to transport the item to the delivery destination;
a package assembly to secure the item;
an image sensor to monitor a first marker on the package assembly and to monitor a reference point at the delivery destination;
a tether coupled to the package assembly;
an attachment mechanism to attach the package assembly to the UAV;
a lowering mechanism to selectively lower the package assembly via the tether;
a package attachment controller to selectively operate the attachment mechanism to release the package assembly at least partially above a drop zone associated with the delivery destination; and
a sway controller to;
determine a sway of the package assembly while the lowering mechanism is lowering the package assembly; and
determine the sway of the package assembly based at least in part on a relative movement of the first marker with respect to the reference point;
wherein the sway controller provides a first indication to the lowering mechanism to control a rate of lowering the package assembly to reduce the sway of the package assembly.
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Accused Products
Abstract
An unmanned aerial vehicle (UAV) can deliver a package to a delivery destination. Packages delivered by a UAV may be lowered towards the ground while the UAV continues to fly rather than the UAV landing on the ground and releasing the package. Packages may sway during lowering as a result of wind or movement of the UAV. A package sway may be monitored and mitigated by rapidly paying out a tether, when using a winch mechanism, to dissipate the energy of the sway as downward energy. Further, the UAV may navigate in the direction of the sway or reduce the altitude of the UAV to dissipate the energy of the sway. Open-loop and/or closed loop drop techniques may be utilized to lower a package from the UAV, and the package may be released in the air or on the ground.
96 Citations
20 Claims
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1. An unmanned aerial vehicle (UAV) configured to deliver an item to a delivery destination, the UAV comprising:
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a plurality of motors to generate thrust for the UAV; a power source to selectively provide power to the plurality of motors, the plurality of motors operating the UAV to transport the item to the delivery destination; a package assembly to secure the item; an image sensor to monitor a first marker on the package assembly and to monitor a reference point at the delivery destination; a tether coupled to the package assembly; an attachment mechanism to attach the package assembly to the UAV; a lowering mechanism to selectively lower the package assembly via the tether; a package attachment controller to selectively operate the attachment mechanism to release the package assembly at least partially above a drop zone associated with the delivery destination; and a sway controller to; determine a sway of the package assembly while the lowering mechanism is lowering the package assembly; and determine the sway of the package assembly based at least in part on a relative movement of the first marker with respect to the reference point; wherein the sway controller provides a first indication to the lowering mechanism to control a rate of lowering the package assembly to reduce the sway of the package assembly. - View Dependent Claims (2, 3, 4)
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5. A method comprising:
- lowering a package assembly from an unmanned aerial vehicle (UAV) at a delivery location using a lowering mechanism of the UAV;
monitoring a first marker on the package assembly;
monitoring a reference point associated with the delivery location;
monitoring a sway of the package assembly with a sensor of the UAV;
determining that the package assembly is out of position with respect to the UAV based at least in part on a relative movement of the first marker with respect to the reference point;
providing a first indication to the lowering mechanism to increase a rate of lowering the package assembly to reduce the sway of the package assembly; and
releasing the package assembly from the UAV at the delivery location. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 19)
- lowering a package assembly from an unmanned aerial vehicle (UAV) at a delivery location using a lowering mechanism of the UAV;
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16. An unmanned aerial vehicle (UAV) comprising:
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a plurality of motors; an attachment mechanism to attach a package assembly to the UAV; a lowering mechanism to lower the package assembly; one or more image sensors; one or more processors; and memory coupled to the one or more processors, the memory including one or more modules that are executable by the one or more processors to perform operations comprising; positioning the UAV at a predetermined height above a delivery location; lowering the package assembly from the UAV at the delivery location using the lowering mechanism of the UAV; monitoring a first marker on the package assembly with the one or more image sensors; monitoring a reference point at the delivery location with the one or more image sensors; determining a sway of the package assembly based at least in part on a relative movement of the first marker with respect to the reference point; providing a first indication to the lowering mechanism to control a rate of lowering the package assembly to reduce the sway of the package assembly; and releasing the package assembly from the UAV at the delivery location. - View Dependent Claims (17, 18, 20)
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Specification