Patent ID: 11907793
Assignee: DATALOGIC IP TECH, S.R.L.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 20:
21. A system for inspecting direct part marking (DPM) symbols, comprising:
an imaging device configured to capture images of DPM symbols on parts being processed by equipment;
a non-transitory memory configured to store a profile inclusive of acceptable grades for each of a plurality of individual metrics of the DPM symbols; and
a processing unit in communication with said imaging device and said non-transitory memory, and configured to:
store, in the non-transitory memory, official metrics measured in a controlled environment for a “golden” sample;
perform measurements of the DPM symbol of the “golden” sample;
perform measurements of the individual metrics of the “golden” sample in an uncontrolled environment;
calculate statistical distributions of the individual metrics from the uncontrolled environment;
compare the official individual metrics from the controlled environment and statistical distributions of the individual metrics from the uncontrolled environment;
identify the individual metrics that are lower in the uncontrolled environment; and
enable the user to set an acceptable grade for each of the individual metrics that have lower grades in the uncontrolled environment than in the controlled environment;
receive, from the imaging device, a captured image of a DPM symbol on a part;
image process the captured image to determine a grade of each of the individual metrics of the imaged DPM symbol;
determine whether any of the determined grades of the individual metrics of the imaged DPM symbol are below the acceptable grades of the respective individual metrics; and
in response to determining that of the individual metrics of the imaged DPM symbol is below an acceptable grade, communicate a first signal to the equipment for the equipment to perform a first physical action in processing the part, otherwise, communicate a second signal to the equipment for the equipment to perform a second physical action in processing the part.