US 10,520,352 B1 · System to validate load cell data

Abstract

Shelves or other fixtures may be used to hold items at a facility. Load cells at the shelf may be used to acquire weight data indicative of changes as items are added or removed from the shelf. The shelves may be part of a fixture that includes a door that results in air movement with respect to the shelves when opened or closed. This air movement may produce weight data that is erroneously indicative of an event, such as a pick or place, even when no actual event has taken place. Weight data from load cells of a shelf may be analyzed to determine a trajectory associated with changes in the weight data over time. A portion of the space may be designated as being associated with invalid weight data. If the trajectory avoids this portion of the space, the weight data may be deemed valid.

Claims20

Dependent claims

A system comprising:

a fixture comprising:
an insulated enclosure;
a shelf within the insulated enclosure;
a set of load cells configured to measure weight of a load on the shelf and generate weight data;
a door configured to provide access to the shelf within the insulated enclosure;
and
a refrigeration unit configured to cool an interior of the insulated enclosure;
and
a computing device comprising:
a memory storing first computer-executable instructions;
and
a hardware processor to execute the first computer-executable instructions to:
determine a change in the weight data that occurs during a time interval;
determine, using the weight data, an estimated location;
access data indicative of a physical boundary of the shelf;
and
determine validity data indicative of validity of the weight data based on the estimated location as compared to the data indicative of the physical boundary.

14 more elements

Dependencies are inferred from the claim text.

System to validate load cell data

Life of this patent

System to validate load cell data

Life of this patent

Abstract

Claims20