创建组件识别数据的方法.pdf - 第57页
57/178 IM-SMT-VSNDI C-0002 -000 Option 3: Recog nition Flag Option 4: Corn er detection f ilter: 2) S pecial 2: NS Base Se arch In this mode, SOJ r ecognition is p erform ed by first using t he leads in the N /S directio…
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2.7.1 Special recognition in the PLCC Recognition mode
There are several special recognition algorithms available for PLCC recognition mode.
1) Special 1: Side Lead Fitting
This mode improves the recognition rate by checking the positional relations
between the leads and extracting the combination best fits the component
definition when detecting the end leads.
Option 1: Lead detection flag
As mentioned above, it is possible to perform Lead root detection by setting the option.
[ How to set the detection position when the Root detection mode is used ]
In the Root Detection mode, the root position of the lead is set as the reference lead position
(Find Pos). (See Figure 48.)
Figure 48
Bit position
Lead Search (0:Tip, 1:Root)
Find Pos X E1
Find Pos X N1
Find Pos Y E1
Find Pos Y N1
Find Pos X W1
Find Pos Y W1
Find Pos Y S1
Find Pos X S1
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Option 3: Recognition Flag
Option 4: Corner detection filter:
2) Special 2: NS Base Search
In this mode, SOJ recognition is performed by first using the leads in the N/S
direction, then based on the data, the recognition of W/E direction is performed.
Option 1: Lead detection flag (same as Special 1)
Option 3
: Recognition Flag (same as Special 1)
3) Special 3: WE Base Search
In this mode, SOJ recognition is performed by first using the leads in the W/E
direction, then based on the data, the recognition of N/S direction is performed.
Option 1
: Lead detection flag (same as Special 1)
Option 3: Recognition Flag (same as Special 1)
4) Special 4: Check Direction
It compares the average brightness of the specified circular region and the
other circular region located 180 degrees opposed (diagonal) from the
specified circular region in order to identify the direction.
Option 1: Lead Detection Flag (same as Special 1)
Option 2: Direction of mark: (0:N, 1:S, 2:W, 3:E)
Option 3: Recognition flag (same as Special 1)
Option 4: Corner detection filter (same as Special1)
Bit position
Excessive Lead Check (0:Non, 1:Exist)
(It checks whether the extra leads exist outside of pitch 1)
Bit position
Lead Search Filter: (0:None, 1:Once, 2: Twice)
(Noise
elimination
filter is used when detecting the corner.)
Right Angle Fitting: 0:None, 1:Exist
(It checks the perpendicularity of the candidate
adjacent sides when extracting the corner.)
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Set the direction determination data to the second Lead Group of the direction set in Option
2.
- Number of the leads
* “Angle correction” mode needs to be custom ordered.
- Lead pitch: Min. Brightness Difference (If the value is 0, 50 is set)
If the difference of the average brightness of the detected circle is less than
the value specified here, it is determined to be an error.
- Lead width: The diameter of the detecting circle (mm)
- Reflect LL: 0
- Find Pos X: The center position X of the detecting circle
- Find Pos Y: The center position Y of the detecting circle
<< Items to be set for PLCC Special recognition>>
Items to be set Set value Explanation
Alignment Group Special Sets the component category.
Alignment Type Special Sets the component type.
Comp. Threshold
Sets the detection level difference for
lead detection
. (See “Appendix 2.
Detection level differences used to detect
leads (threshold value)”.)
Comp. Tolerance
Specifies the tolerance of the lead
pitch as a percentage.
Search Area (mm) Sets the range of the detection.
Body Size X (mm) Sets the size of the outer edge.
Body Size Y (mm) Sets the size of the outer edge.
Body Size Z (mm) Sets the size of the outer edge.
Cntr. Offset X (mm)
Sets the offset amount in the X
direction from the center position.
Cntr. Offset Y (mm)
Sets the offset amount in the Y
direction from the center position.
Cntr. Offset R (mm)
Sets the offset amount of the angle of
rotation.
Ruler Width
Algorithm Special 1-4
Selects the recognition algorithm
when using a special algorithm.
Base Alignment PLCC
Selects the basic component type
when using a special algorithm.
Vision Option 1 Sets option parameter 1.
Vision Option 2 Sets option parameter 2.
Vision Option 3 Sets option parameter 3.
Common
Data
Vision Option 4 Sets option parameter 4.
Bit position
Check Direction ( 0: 2 angle,1: 4 angle)
Check Type (0:Black, 1:White)
Judgment method ( 0: Error, 1: Angle correction)