US 10,648,953 B1 · Ultrasonic weld quality testing using audio

Abstract

Various embodiments of a technique are provided for determining the quality of a weld for a battery contact using audio signals. In some embodiments, a system for determining the quality of a weld for a battery contact comprises a processor configured to receive a snapshot that includes a rendering of an audio signal obtained during a welding process by monitoring a device being welded. A weld-quality indicator for the device being welded is determined based at least in part on features extracted from the snapshot and a weld-quality score for the device being welded is determined in response to the weld-quality indicator. In this case, the weld-quality score is indicative of a quality of the weld. The system also includes a memory coupled to the processor and configured to provide the processor with instructions.

Claims21

Dependent claims

A system for determining the quality of a weld, the system comprising:

a processor configured to:
receive an input generated in response to sound produced by a welding process that produced a weld, wherein the welding process is performed by an ultrasonic welder having an excitation frequency, wherein the input is indicative of intensity amplitudes of the sound over a range of frequencies including odd harmonics of half the excitation frequency;
process the input to identify features of the sound produced at a time T1, wherein the identified features are based on sound intensity amplitudes and a corresponding set of frequencies of the sound produced at the time T1;
process the identified features of the sound to determine a weld-quality indicator for the weld;
and
determine a weld-quality score for the weld based on the weld-quality indicator, wherein the weld-quality score is indicative of a quality of the weld;
and
a memory coupled to the processor and configured to provide the processor with instructions.

5 more elements

A method for determining the quality of a weld, the method comprising:

receiving an input generated in response to sound produced by a welding process that produced a weld, wherein the welding process is performed by an ultrasonic welder having an excitation frequency, wherein the input is indicative of intensity amplitudes of the sound over a range of frequencies including odd harmonics of half the excitation frequency;
processing the input to identify features of the sound produced at a time T1, wherein the identified features are based on sound intensity amplitudes and a corresponding set of frequencies of the sound produced at the time T1;
processing the identified features of the sound to determine a weld-quality indicator for the weld;
and
determining a weld-quality score for the weld based on the weld-quality indicator, wherein the weld-quality score is indicative of a quality of the weld.

2 more elements

Dependencies are inferred from the claim text.

Ultrasonic weld quality testing using audio

Life of this patent

Ultrasonic weld quality testing using audio

Life of this patent

Abstract

Claims21