Smart Gui - Algorithm Training Material_rev1.pdf - 第69页

Copyright © ViT rox All Rights Reserved . B-type Algorithm - Joint (T erminal Reference) 69 1. Joint Image Plane ● Solder Inspection consists of 3 mode. Which are: 2. Joint Grey Thres ● These are the types of 2D Lighting…

B-type Algorithm - Joint

1. Solder Inspection

● Solder Inspection consists of 3 mode. Which are:

Difference between Terminal & Base

Terminal Reference:

Solder height qualification is based on the height (%) between lead

terminal & PCB surface

Base Reference:

Solder height qualification is based on the height (um) measured from

PCB surface.

B-type Algorithm - Joint (Terminal Reference)

1. Joint Image Plane

● Solder Inspection consists of 3 mode. Which are:

2. Joint Grey Thres

● These are the types of 2D Lighting. Select the one with

having highest contrast among interested inspection region

and the background.

● Usually choose angle 2+3

3. Joint Height Thres

Grey Thres

Measured Grey Thres

PASS

FAIL

Height Thres (um)

Measured Height(um)

PASS

FAIL

B-type Algorithm - Joint (Terminal Reference)

4. Joint Coverage Thres

● To set the percentage to pass the joint inspection.

Pass Criteria for single pixel:

a. Measured Grayscale < Joint Grey Thres

b. Solder Height (%) > Joint Height Thres (%).

The overall pass criteria depends on:

Joint Coverage (%) > Joint Coverage Thres (%)

where,