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Plate Inspection System
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Customer
R & D Project
Goal
This project was designed for a leading company in house goods production . It was aimed to make the physical deformation control of the plates coming from the oven with an automised system and to prevent the wrong plates from going to the other stages of production and to the customers.
This inspection and classifying was being manually made by responsible workers. The workers were putting the plate downwards on a smooth and rough workbench, pressing the plate from different angles and seeking for rattles and movements caused by spaces. And they were classifying the products according to these.
Design and Technology
It was decided to develope the solution with a computer based machine vision according to the analysis of the samples, which were provided by the plate producing company, with the help of high technology and past knowledge.
It was determined that colored, digital and progressive scan cameras must be used becase of the high production capasity and line speed, eventhough analog cameras were used during the R&D period. And the analog frame grabber card was upgraded to a digital frame grabber card.
The inspections stated in the goal section were made by using morfological analysis techniques. National Instruments' frame grabber and LabVIEW programming language was used. System's computer configuration changes according to the line and number of the cameras.
After our physical deformation control was successful the experiments about the inspection of printed figures on the finished products started. And it was successful too.
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Project
scheme 10.Plate input |
Solution
When
the triggering signal comes from the sensors which determine that the
plates are in appropriate location, images are being taken from the
cameras. The image of the plate are being taken away from the whole
image and the orientation inspection is being made. After that the numerical
measurement results with the accuracy of 100 percent are being acquired
by morfological analysis techniques. And these results are being compared
with the determined calues and the quality class of the products is
being determined.
The desing of the system for automatic guiding every quality class to their lines was also in the content of our R&D work.
Result
The physical deformation and printed figure inspections was successfully made in this system which was designed for home good production sector , which is a very developed sector in Turkey.
The project could not be installed because of the rising costs according to the economical conditions ( 2001 economical crisis ) and inside company dynamics. The R&D experiments of this project was finised and the project is being kept in our databes and ready for application.
Application Areas
Porcelain house goods production, inspection of various glass, wood, metal products.
Project's Principal Chart :
1)
Control cabin
2) 220VAC source
3) Industrial PC
4) Fieldpoint RTU
5) Input/Output signals
6) RS-232 line
7) Operation web
8) Image Signals
9) Power line
10) Plate Input
11) Production Line
12) Plate
13) Inspection enviroment
14) Industrial Camera
15) Industrial Light
16) Triggering sensor
17) Triggering sensors
18) Classified products
