| 摘要 |
PURPOSE:To securely decide soldering finish quality in a short time by calculating the area of a soldering finished part on the basis of preset window patterns which are divided concentrically and comparing the area with a standard value. CONSTITUTION:The soldering finished part 3a of a lighting tube 3 is photographed by a television camera 4 firstly and converted by a binary circuit 5 into a binary signal, which is stored in an image memory 7. Then, a microcomputer 11 finds the center position of the soldering finished part from position data from a position detecting circuit 8. Then, one of window patterns which are divided concentrically is generated in a pattern memory 13 and area measurement data in the window is read in from an area measuring circuit 12 and compared with the preset window pattern. When the area measurement data satisfies the standard, the window pattern generated in the pattern memory 13 is changed and the same processing is performed to decide that the welding finished part is normal when all of data in the four window patterns meet the standard.
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