Inspection method of electric part

• US 7,409,080 B2
• Filed: 09/16/2005
• Issued: 08/05/2008
• Est. Priority Date: 09/28/2000
• Status: Expired due to Fees

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Maeda, Tatsuya, Miyawaki, Shigenori
• Primary Examiner(s): Carter; Aaron W
• Application Number:
  US11/227,189
• Publication Number:
  US 20060013467A1
• Time in Patent Office: 1,054 Days
• Field of Search: 382/141, 382143-152, 382/142, 348 86- 87, 348/125, 348/126, 348/94, 348 88- 93, 348/95, 348127-134, 356/237.1, 356/237, 356/237.5, 356426-431, 3562372-2374, 356/237.6, 378/98.2, 700 95-212, 298/33, 438/16, 250306-311, 250/223
• US Class Current: 382/141
• CPC Class Codes: G01N 21/8851 Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges G01N21/8806 and G01N21/93 - G01N21/95692 take precedence; optical measurement of dimensions G01B11/00; optical scanning G02B26/10; image transformation G06T3/00; computerised image enhancement G06T5/00; image processing per se for flaw detection G06T7/0002
• CPC Class Codes: G06T 2207/30148 Semiconductor; IC; Wafer
• CPC Class Codes: G06T 7/0004 Industrial image inspection

Abstract

An inspection apparatus of an electric junction box is provided, by which improper mounting of electric parts can be detected. The inspection apparatus 1 has a CCD camera 5, an image-processing device 7 and a control device 8. The CCD camera picks up images of fuse 14 in the electric junction box 12 as a subject of the inspection. The image-processing device 7 stores an image consulting data 60. The image consulting data 60 includes a plurality of images of each fuse 14 having the same item symbol with regard to every item symbol, the fuses 14 being used in the electric junction box 12. The control device 8 stores normal data indicating the proper item symbol of the fuse 14 to be mounted on a corresponding mount 13. The image-processing device 7 extracts the image most analogous to the image picked up by the CCD camera 5 from the images in the image consulting data. The control device 8 judges the quality of the item symbol of the fuse 14 having the most analogous image on the basis of the normal data.

Claims

1. An inspection method of an electric part comprising the steps of:

storing a plurality of images of a non-defective electric part in advance;

storing image consulting data including a plurality of item symbols wherein each of the item symbols corresponds to at least one of the plurality of images;

storing normal data corresponding to the non-defective electric part, the normal data including a plurality of sections to be inspected and respective ones of the item symbols; and

judging whether or not an electric part to be inspected at a section to be inspected is non-defective, in dependence upon an image of the electric part to be inspected, the section to be inspected, the image consulting data, and the normal data.

2. An inspection method of an electric part comprising the steps of:

storing a plurality of images of a non-defective electric part in advance;

storing image consulting data including a plurality of item symbols wherein each of the item symbols corresponds to at least one of the plurality of images;

storing normal data corresponding to the non-defective electric part, the normal data including a plurality of sections to be inspected and respective ones of the item symbols;

comparing an image of an electric part to be inspected at a section to be inspected and the plurality of the images of the non-defective electric part;

extracting an image most analogous to the image of the electric part to be inspected from the plurality of the images of the non-defective electric part; and

judging whether or not the electric part to be inspected is non-defective, in dependence upon the most analogous image, the image of the electric part to be inspected, the section to be inspected, the image consulting data, and the normal data.