> Steel bar examination plan design
1. examinations functions request
Examines on the steel bar the silver white 色条section
width, silver white 色条Duan Hetong between 色条section gap
undulation as well as on coating surface each kind of flaw. The
examination precision request in 20um, the examination speed is the
20m/ minute. The system examination data automatic preservation
in the Excel form, may print as necessary. When the system
examination data has not achieved the qualified standard time, the
system will be able auto-alarm.
Below is the product flaw which needs to examine:
1. coats has the steam bubble but to reveal the copper
2. coats has the rotten money
3. coats the dew copper
4. coating surfaces have scratch2. examinations flows
1. aims at the different width, the strip number steel
bar carries on photographs
2. carries on the examination parameter establishment in
Sherlock software to the different type steel bar.
3. pair of different types steel bars examination document
carries on the classified preservation.
4. assigns out the corresponding examination document in the
user contact surface to start to examine. 3. systems shapings
Uses Canadian DALSA Coreco IPD Corporation the NetSight
II intelligence machine vision system to take this examination system
the hardware foundation. The software module we use machine
vision processing software Sherlock, carries on the fast two
developments using the Sherlock formidable function. We we use
Rake and Line in Sherlock software shape Peek survey the different
color the strip section width, the realization means are choose an
inked ribbon 交界?wilfully sampling achievement to survey the
initial station to carry on are away from the computation, finally
calculates the silver 色条section width through the best match
algorithm and not 同色 between section gap undulation. Each
image examination speed<100ms?/P>
Hardware disposition:
Machine vision system:
Camera: SM2 1,024 x 768 picture elements (1 million
picture elements)
Photosource: Ai coaxial light Lens: Fujinon 8mm performance lens Work distance:
Camera work distance:
Level FOV (field of vision) =20mm
Picture element unit =0.020mm System precision:
The examination precision requests 20um=0.020mm
X direction system precision (X direction picture
element value) = field of vision scope (X direction) /CCD chip picture
element quantity (X direction)
Y direction system precision (Y direction picture
element value) = field of vision scope (Y direction) /CCD chip picture
element quantity (Y direction)
FOV= precision x CCD chip picture element quantity
=0.050mm x 1000=50mm System working speed:
Examination speed request: 20m/ minute
Each imagery processing speed<100ms The system installs the schematic drawing:
Sherlock software examination real-time truncation chart:
Serial number flaw name localization
(1) steam bubble 破露 copper <= 6.8
The localization survey data [ to is left right ]:
Copper breadth 6.548mm silver breadth 2.361mm always extends
8.909mm (decimal point latter 3)
Surface defect examination: The examination data
examination flaw 5 flaws area size sees in the chart the data
Serial number flaw name localization
(2) rotten money <= 0.5 >= 2.3
The localization survey data [ to is left right ]:
Copper breadth 6.322mm silver breadth 2.345mm copper breadth
0.324mm always extends 8.991mm
Surface defect examination: The examination data
examination flaw 4 flaws area size sees in the chart the data
Serial number flaw name localization
(3) dew silver <= 0.5 >= 2.3
The localization survey data [ to is left right ]:
Copper breadth 6.400mm silver breadth 2.290mm copper breadth
0.249mm always extends 8.939mm
Surface defect examination: The examination flaw 9
flaws area size sees in the chart the data
Serial number flaw name localization
(4) scratches <= 3.6 >= 7.4
The localization survey data [ to is left right ]:
Copper breadth 3.393mm silver breadth 4.393mm copper breadth
7.228mm always extends 15.014mm
Surface defect examination: The examination flaw 2
flaws area size sees in the chart the data
The user examination contact surface may request
according to the customer to compile, above only is examines the
establishment chart certainly is not the user final contact surface.
The system examination data automatic preservation in the Excel
form, the user may print the examination data as necessary.
 Engineer IPD machine vision contact method:
The Shenzhen audience for are popular the numerical control
limited company
King third branch Engineer IPD project
Telephone: 0755-26722719 revolution 356
E-mail:unicornwy2003@yahoo.com.cn
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