A display rack comprises shelves and a base. Each shelf comprises a sensor mat comprising a lattice of load sensors. The base is configured for measuring a total weight, which includes weights of any objects positioned on the shelves. The system is configured for determining object addition or removal event data based on in time corresponding changes of: total weight measured at the base; and binary load status of multiple load sensors of a sensor mat of the display rack. A binary load status of a load sensor indicates whether the load sensor at least in part supports an object or not. The event data comprises: an object weight based on said change of total weight measured at the base; and an object support shape and an object location both based on said change of binary load status of multiple load sensors of said sensor mat of the display rack.

Noise that is present in the output of a weight sensor can lead to erroneous weight data. A moveable device, such as a tote, may be used by a customer while shopping in a facility. This tote can include one or more weight sensors that are used to determine the weight of items added to or removed from the tote. However, noise can affect the output of the weight sensors, where such noise is attributed to movement or vibration of the tote. Data from a vibration sensor or a motion sensor coupled to the tote can be analyzed to determine noise that is common to weight data and vibration data or motion data associated with the tote. This common noise can then be removed or attenuated from the weight signals to determine de-noised and valid weight data for the tote.

A product display surface supports at least one product being offered for sale thereon. This product display surface has a weight-sensitive RFID tag associated therewith. This tag has at least one transmission element that moves with respect to a remaining portion of the tag as a function of weight being supported by the product display surface. So configured, the weight-sensitive RFID tag transmits at a first level when there are no products (or only a few products) on the product display surface and at a second level when there are at least a predetermined number of products on the product display surface, the first transmission level being less than the second transmission level. An RFID-tag reader reads the weight-sensitive RFID tag and a control circuit determines when the first product display surface lacks sufficient displayed inventory as a function, at least in part, of the weight-sensitive RFID tag's transmission strength.

A product display surface supports at least one product being offered for sale thereon. This product display surface has a weight-sensitive RFID tag associated therewith. This tag has at least one transmission element that moves with respect to a remaining portion of the tag as a function of weight being supported by the product display surface. So configured, the weight-sensitive RFID tag transmits at a first level when there are no products (or only a few products) on the product display surface and at a second level when there are at least a predetermined number of products on the product display surface, the first transmission level being less than the second transmission level. An RFID-tag reader reads the weight-sensitive RFID tag and a control circuit determines when the first product display surface lacks sufficient displayed inventory as a function, at least in part, of the weight-sensitive RFID tag's transmission strength.

A trunk inventory detection arrangement for a motor vehicle includes a camera positioned to capture images of objects within a trunk of the motor vehicle. A weight detection device is positioned to detect a weight of the objects in the trunk. An electronic processing device is communicatively coupled to each of the camera and the weight detection device. The electronic processing device causes a user of the vehicle to be informed of the objects in the trunk based on signals received from the camera and the weight detection device.

A shelf bracket assembly is mounted on a vertically disposed shelf upright, and has: at least one weighing device; an anchoring device; and a cantilever for supporting a shelf panel. In a condition where the shelf bracket assembly is mounted on the shelf upright, the cantilever projects from the shelf upright in a substantially horizontal direction. The cantilever has a vertically disposed metal plate. In a Cartesian coordinate system, an extent of the cantilever in a horizontal plane defines a Y-direction, a vertical direction defines a Z-direction, and a direction perpendicular to the Y-direction and the Z-direction defines an X-direction. The at least one weighing device includes: a force-introduction section; a linkage section; and a force-supporting section. The linkage section comprises two weighing plates extending horizontally and parallel to each other. The force-supporting section and the force-introduction section are at least partially formed of vertically extending metal plates.

Systems and methods for performing inventory management. The methods comprise: measuring, by an Out Of Stock (“OOS”) sensor at a first time, a first collective weight of a plurality of items disposed thereon; measuring, by the OOS sensor at a second later time, a second collective weight of a plurality of items disposed thereon; using the first and second collective weights to determine if an item has been added to or removed from the OOS sensor; and wirelessly communicating, from the OOS sensor to a remote computing device, a notification that an item has been added to or removed from the OOS sensor such that stored inventory information is updated accordingly. The OOS sensor comprises a base layer having a planar cross-sectional profile and an array of weight measuring sensors (e.g., piezoresistive sensors).

Systems and methods for performing inventory management. The methods comprise: measuring, by an Out Of Stock (“OOS”) sensor at a first time, a first collective weight of a plurality of items disposed thereon; measuring, by the OOS sensor at a second later time, a second collective weight of a plurality of items disposed thereon; using the first and second collective weights to determine if an item has been added to or removed from the OOS sensor; and wirelessly communicating, from the OOS sensor to a remote computing device, a notification that an item has been added to or removed from the OOS sensor such that stored inventory information is updated accordingly. The OOS sensor comprises a base layer having a planar cross-sectional profile and an array of weight measuring sensors (e.g., piezoresistive sensors).

Functionality of sensors on a shelf or other inventory location is tested by encouraging an interaction and determining if the output from the sensors on the shelf is consistent with the interaction. An interaction at the shelf can include, for example, a user adding or removing an item from the shelf. To encourage this type of interaction with the shelf or items therein, an announcement may be generated and presented to a user. The announcement may comprise an advertisement with some type of incentive for the user to add or remove an item from the shelf. Upon verifying such an interaction, sensor data before and after the interaction can be compared to generate diagnostic data for the sensor, which can indicate whether the sensor is operational or malfunctioning.

An intelligent pill box device comprising: a base and a display panel. The base includes a plurality of cylindrical shaped receptacles for storing medication bottles wherein each receptacle includes a radio frequency identification reader, a faraday cage, and a load cell at the bottom of the receptacle to measure the weight of the contents of the receptacle.