System for detecting noise in weight data
AssigneeAmazon Technologies, Inc.
InventorWilliam Spencer Worley, III
Life of this patent
Estimating the term…
Abstract
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.
Claims22
An apparatus comprising:
- a moveable device;
- a first sensor to generate a first signal indicative of a weight of a load on the moveable device;
- a second sensor to generate a second signal associated with the moveable device;
- and
- a processing unit, in communication with the first sensor and the second sensor, to:
- determine first data based on the first signal;
- determine second data based on the second signal;
- determine one or more components that are common to both the first data and the second data;
- and
- determine a first portion of the first data is invalid based on the one or more components that are common to both the first data and the second data.
A system comprising:
- a tote;
- a first weight sensor coupled to the tote, the first weight sensor to generate first data indicative of a weight of a load on the tote;
- a second sensor coupled to the tote, the second sensor to generate second data associated with the tote;
- and
- a processing unit to:
- determine third data common to both the first data and the second data;
- and
- determine fourth data that excludes the third data, wherein the fourth data is a subset of the first data.
A method comprising:
- accessing first data from a first weight sensor of a moveable device;
- accessing second data from a second sensor of the moveable device;
- determining one or more components that are common to the first data and the second data;
- and
- determining a first portion of the first data is invalid based on the one or more components that are common to the first data and the second data.
Dependencies are inferred from the claim text.