Abstract: Items may be stored at an inventory location using an instrumented hook system. The instrumented hook system may include a hook from which items may be suspended. The hook may be affixed to a support arm using a weight sensor. The weight sensor provides weight data indicative of the weight of items suspended by the hook. The system may also include other sensors such as capacitive sensors, photodetectors, image sensors, and so forth. Sensor data from these sensors may be used to determine interaction data indicative of a quantity on hand, quantity picked, quantity placed, and so forth.

Abstract: Inventory locations such as shelves in a materials handling facility may be used to store items of various shapes and sizes. Described is a modular item stowage system with hardware that incorporates several components that may be readily reconfigured to accommodate changes in store layout, product presentation, and so forth. The components may include one or more of an instrumented auto-facing unit, divider, spacer, and so forth. The hardware may also support onboard electronics such as sensors to acquire sensor data and computing devices to process the sensor data.

Abstract: Tracking data of objects within a facility may be obtained using a plurality of smart floor tiles. Techniques for installation of the smart floor tiles allow for the generation of information about the relative arrangement of the smart floor tiles relative to one another. This relative arrangement is used in conjunction with information about physical dimensions of the smart floor tiles to generate a mapping that associates particular floor tiles with particular physical locations within the facility.

Abstract: A fixture includes a shelf upon which items may be placed. In one implementation, the shelf is supported by four load cells that provide load cell data that may be used to calculate weight data for the load on the shelf. The load cells are mounted underneath a frame, with an upper portion of a load mount extending upward through the frame and engaged to the shelf. The shelf and the frame include stiffeners to increase rigidity, improving the quality of the load cell data. Electronics and a wiring harness are located underneath the frame. In this configuration, assembly of the fixture may be accomplished completely from the underside, simplifying assembly.

Abstract: Inventory locations in a materials handling facility may be used to store items of various shapes and sizes. Described is an auto-facing unit designed to stow and arrange items against a front of the unit in a uniform fashion. The auto-facing unit may include one or more sensors to generate sensor data. The sensor data may be used to determine a quantity of items remaining in the auto-facing unit. The auto-facing unit and associated structures may be readily reconfigured to accommodate changes in store layout, product presentation, and so forth.

Abstract: Inventory locations such as shelves in a materials handling facility may be used to store items of various shapes and sizes. Described is an inventory location that houses onboard electronics such as sensors to acquire sensor data and computing devices to process the sensor data. The sensors may include one or more weight sensors, position encoders for auto-facing units, and so forth. The inventory location includes features to protect the onboard electronics and facilitate physical reconfiguration to support products of different shapes and sizes.

Abstract: Inventory locations such as shelves in a materials handling facility may be used to store items of various shapes and sizes. Described is a modular item stowage system with hardware that incorporates several components that may be readily reconfigured to accommodate changes in store layout, product presentation, and so forth. The components may include one or more of an instrumented auto-facing unit, divider, spacer, and so forth. The hardware may also support onboard electronics such as sensors to acquire sensor data and computing devices to process the sensor data.