Roller, inspection method and apparatus, coil conveying method and apparatus, device and medium

Patent metadata

Field	Value
Publication number	US-2024166460-A1
Application number	US-202318447716-A
Country	US
Kind code	A1
Filing date	Aug 10, 2023
Priority date	Nov 23, 2022
Publication date	May 23, 2024
Grant date	—

Abstract

This application provides a roller, an inspection method for a camera, a camera inspection apparatus, a coil conveying method, a coil conveying apparatus, an electronic device, a computer-readable storage medium, and a computer program product. The roller includes a roller body and a calibration sheet. The roller body includes a roller surface for supporting a coil; the calibration sheet is located on the roller surface of the roller body and avoids the coil, and the calibration sheet is used for inspection of the camera.

First claim

What is claimed is:

1 . A roller, comprising:
a roller body, comprising a roller surface for supporting a coil; and a calibration sheet located on the roller surface of the roller body and avoiding the coil, the calibration sheet being configured for camera inspection.

2 . The roller of claim 1 , wherein the calibration sheet comprises a first calibration sheet and a second calibration sheet, and the first calibration sheet and the second calibration sheet are respectively close to two ends of the roller body.

3 . The roller of claim 2 , wherein the first calibration sheet and the second calibration sheet are films, and the films are stuck to the roller surface.

4 . An inspection method for a camera, the camera being configured for obtaining a detection image of coil conveying by the roller of claim 1 , comprising:
obtaining a detection image having a calibration sheet; determining location information of the calibration sheet in the detection image; and judging whether a location of the camera is abnormal based on the location information of the calibration sheet.

5 . The inspection method for a camera of claim 4 , wherein the judging whether a location of the camera is abnormal based on the location information of the calibration sheet comprises:
calculating an offset parameter of a location of the calibration sheet in the detection image relative to a preset reference location based on the location information of the calibration sheet and preset reference location information; and judging whether the location of the camera is abnormal based on the offset parameter.

6 . The inspection method for a camera of claim 5 , wherein the calibration sheet comprises a first calibration sheet and a second calibration sheet, the location information of the calibration sheet comprises first location information for indicating a location of a first feature point in the first calibration sheet in the detection image and second location information for indicating a location of a second feature point in the second calibration sheet in the detection image; and
the preset reference location information comprises first reference location information for indicating a reference location of the first feature point and second reference location information for indicating a reference location of the second feature point.

7 . The inspection method for a camera of claim 6 , wherein the offset parameter comprises at least one of a first deviation value, a second deviation value and a third deviation value;
and wherein the calculating an offset parameter of a location of the calibration sheet in the detection image relative to a preset reference location based on the location information of the calibration sheet and preset reference location information comprises at least one of: calculating the first deviation value based on the first location information and the first reference location information; calculating the second deviation value based on the second location information and the second reference location information; and calculating the third deviation value based on the first location information, the second location information, the first reference location information and the second reference location information.

8 . The inspection method for a camera of claim 7 , wherein the first deviation value is an offset distance in a first direction between the location of the first feature point in the detection image and the reference location of the first feature point;
the second deviation value is an offset distance in the first direction between the location of the second feature point in the detection image and the reference location of the second feature point; and the third deviation value is an included angle formed between a first connecting line connecting the first feature point and the second feature point in the detection image and a second connecting line connecting the reference location of the first feature point and the reference location of the second feature point, wherein the first direction is a direction different from a vertical direction of the detection image.

9 . The inspection method for a camera of claim 6 , wherein the first feature point is a pattern center of the first calibration sheet, and the second feature point is a pattern center of the second calibration sheet.

10 . The inspection method for a camera of claim 5 , wherein the reference location is a location of the calibration sheet in a first detection image having the calibration sheet obtained by the camera.

11 . The inspection method for a camera of claim 5 , the judging whether the location of the camera is abnormal based on the offset parameter comprises:
judging that the location of the camera is abnormal in response to the offset parameter being greater than a first preset threshold.

12 . The inspection method for a camera of claim 11 , further comprising: sending alarm information and/or adjustment information in response to that the location of the camera is abnormal.

13 . The inspection method for a camera of claim 12 , wherein the adjustment information is sent to control the location of the camera to be adjusted in response to the offset parameter being greater than the first preset threshold and less than or equal to a second preset threshold; and
sending the alarm information in response to the offset parameter being greater than the second preset threshold, wherein the second preset threshold is greater than the first preset threshold.

14 . A coil conveying method, comprising:
controlling a camera to obtain a detection image of coil conveying by a roller; performing inspection on the camera by using the inspection method for a camera of claim 4 ; identifying the detection image in response to an inspection result indicating that a location of the camera is normal; and driving the roller to convey a coil based on an identification result.

15 . A camera inspection apparatus, comprising:
an obtaining module, configured to obtain a detection image having a calibration sheet; a determination module, configured to determine location information of the calibration sheet in the detection image; and a judgment module, configured to judge whether a location of a camera is abnormal based on the location information of the calibration sheet.

16 . The camera inspection apparatus of claim 15 , further comprising:
an alarm module, configured to send alarm information in response to an inspection result indicating that the location of the camera is abnormal.

17 . The camera inspection apparatus of claim 15 , further comprising:
an adjustment mechanism, configured to adjust the location of the camera in response to the inspection result indicating that the location of the camera is abnormal.

18 . A coil conveying apparatus, comprising:
a roller comprising: a roller body, comprising a roller surface for supporting a coil; and a calibration sheet located on the roller surface of the roller body and avoiding the coil, the calibration sheet being configured for camera inspection; a camera; the camera inspection apparatus of claim 15 , used to perform inspection on the camera; an identification module, configured to identify a detection image obtained by the camera in response to an inspection result indicating that a location of the camera is normal; and a driving mechanism, configured to drive the roller to convey a coil based on an identification result for the detection image.

19 . An e

Assignees

• Contemporary Amperex Technology Co Ltd

Inventors

• Mao Yuyang
• Zhang Zhipeng
• Li Hongyuan
• Jiang Ping

Classifications

• B65H2557/24

  Calculating methods; Mathematic models · CPC title

• B65H2511/23

  Coordinates, e.g. three dimensional coordinates · CPC title

• B65H2511/516

  Marks; Patterns · CPC title

• B65H2553/42

  Cameras · CPC title

• B65H2801/72

  Fuel cell manufacture · CPC title