Amazon Technologies, Inc.

Kiva Systems, Inc.

Michael T Barbehenn

Peter R Wurman

Michael Cordell Mountz

Andrew E Hoffman

Raffaello D'Andrea

Raffaello D'andrea

Matthew David Verminski

Daniel T Brunner

Jeremiah David Brazeau

James Raymond Allard

Timothy Aaron Bragg

Eryk Brian Nice

Oleksandr Glazkov

John W Cullen

Andrew Stubbs

Peter K Mansfield

Michael Harrison Decker

William James Watt

Andrew Brenden Tinka

Fabrizio Santini

Aron Klair Insinga

Eric Leventhal Arthen

David C Koehler

Joshua B Chaitin-Pollak

Matthew E Kimmel

Matthew Paul Bell

Dennis Polic

Aayush Aggarwal

James Plumley

Le Zou

Petr Svec

Raffaello D`Andrea

Raffaello D'ANDREA

A method for transporting inventory items includes moving a mobile drive unit to a first point within a workspace. The first point is a location of an inventory holder. The method further includes docking the mobile drive unit with the inventory holder and moving the mobile drive unit and the inventory holder to a second point within the workspace. The second point is associated with conveyance equipment. The method further includes moving the inventory holder to a third point within the workspace using the conveyance equipment.

Method and system for transporting inventory items

Techniques for controlling mobile drive units (e.g., robots) in proximity to humans in a physical area are described. A management device may send an activity message to the mobile drive units instructing the mobile drive units to perform a set of activities. If a human is detected in the physical area, the management device or another mobile drive unit may send an activity command instructing a mobile drive unit to stop, reduce the speed at which it is traveling, to change its path of travel, or to continue performing its set of activities. If the mobile drive units do not receive the activity command, the mobile drive units may stop performing the set of activities. After the management device determines that the human has left the physical area, the management device may resume sending the activity message.

Safety compliance for mobile drive units

Systems and methods described herein pertain to maintaining a virtual representation of a workspace in a material handling system and updating the virtual representation without downtime. Methods described include maintaining an initial virtual representation of a material handling grid, receiving an updated virtual representation, and generating and implementing an intermediate virtual representation that does not conflict with the initial virtual representation. Methods further include, upon determining that the intermediate virtual representation is performing without conflicts, deploying the updated virtual representation to replace the intermediate virtual representation without halting operations in the workspace. Multiple intermediate virtual representations can be generated to allow for complex changes, and the deployments performed in series.

Nondisruptive workspace representation deployment for inventory systems

In one example, an intersection of a first path and a second path may be determined. The first path may be associated with a first mobile drive unit and the second path may be associated with a second mobile drive unit. A plurality of velocity sets may be determined based on the intersection. A velocity set may be selected from the plurality of velocity sets. The velocity set may include velocity values that correspond to the first mobile drive unit and the second mobile drive unit. The selected velocity set may be provided to at least one of the first mobile drive unit or the second mobile drive unit.

Coordination of mobile drive units

In an infrastructure that uses a mobile order fulfillment system, robotic drive units may be dispatched and instructed to bring inventory holders to a workstation where at least one of the inventory holders is packed and prepared for shipment. The robotic drive units are then instructed to move the prepared inventory holder to a transport vehicle such as a truck. Fiducial marks may be removably placed within the transport vehicle to aid navigation of the robotic drive units. At a destination facility, additional robotic drive units may be instructed to move the inventory holders from the truck and place the inventory holders at appropriate storage locations.

Inter-facility transport in inventory management and fulfillment systems

Techniques for making a physical area safe for a human to enter when mobile drive units (e.g., robots) are operating in the physical area are described. A management device may send an activity message to the mobile drive units instructing the mobile drive units to perform a set of activities. If a human is detected in the physical area, the management device may stop sending the activity command. If the mobile drive units do not receive the activity command, the mobile drive units may stop performing the set of activities. After the management device determines that the human has left the physical area, the management device may resume sending the activity message.

A method for moving one or more mobile drive units within a workspace includes receiving, from a first mobile drive unit, a reservation request requesting use of a first path segment to move in a first direction. The method further includes determining that a second mobile drive unit is currently located on the first path segment and determining whether the second mobile drive unit is moving in the first direction. Additionally, the method includes transmitting a reservation response indicating that the reservation request is denied, in response to determining that the second mobile drive unit is not moving in the first direction. The method also includes transmitting a reservation response indicating that the reservation request is granted, in response to determining that the second mobile drive unit is moving in the first direction.

System and method for coordinating movement of mobile drive units

Transporting inventory items using mobile drive units and conveyance equipment

A method of rotating an inventory holder includes moving an inventory holder towards a rotation area along a straight segment of a path with a first face of the inventory holder facing a first direction. The rotation area includes a portion of a workspace designated for rotation of inventory holders. The method further includes moving the inventory holder into the rotation area along a first arced segment with an orientation of the first face perpendicular to the first arced segment. The method additionally includes executing a rotation maneuver within the rotation area and moving the inventory holder out of the rotation area along a second arced segment with a second face facing the first direction.

Maneuvering a mobile drive unit

A method for processing waste in a material handling system includes detecting an occurrence of a trigger event associated with a waste holder located at a first location and, in response to detecting the trigger event, moving a mobile drive unit to the first location. The method also includes loading waste material onto the mobile drive unit at the first location and transporting the waste material to a waste station using the mobile drive unit.

System and method for processing waste material

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Bedford, MA, United States of America

Michael T Barbehenn