SIPLACE Vision Customer_en - 第113页
Component Shapes SIPLACE Vision Flux Inspection – on ly in 605 SW New SIPLACE Vision Functions for 605 and 701 Station SW S tudent Guide SIPLACE Vision (Customer) Edition 12/2008 EN Component Shapes 11 3 Evaluation of Ho…
Component Shapes
New SIPLACE Vision Functions for 605 and 701 Station SW SIPLACE Vision Flux Inspection – only in 605 SW
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
112
Brightness Evaluation
Brightness evaluation as the first measurement method is a simple procedure for determining the
medium brightness per ball in the evaluation area as a characteristic. This brightness is compared to an
adjustable threshold.
If the brightness value exceeds the threshold the corresponding ball will be evaluated as insufficiently
coated.
The positions of the balls are derived from the inspection step previously carried out.
5-15: Cirlce (DonutOuter)
The whole circular area whose diameter is
determined by the ball diameter in combination
with the DonutOuter parameter can be selected as
the evaluation area.
5-16: Circular ring (DonutOuter; DonutInner)
Another evaluation area consists of the area
created by a circular ring as a result of the ball
diameter in combination with the DonutOut
parameter for the outer diameter and DonutInner
for the inner diameter.
5-17: Selection of DonutOuter and DonutInner
DonutOuter and DonutInner parameters should
not be selected using an un-dipped component.
Usually it is advisable to choose DonutOut in such
a way that the brightness transition is located just
outside the circular ring given by DonutOuter.
DonutInner should only encompass the dark
center.
Component Shapes
SIPLACE Vision Flux Inspection – only in 605 SW New SIPLACE Vision Functions for 605 and 701 Station SW
Student Guide SIPLACE Vision (Customer)
Edition 12/2008 EN Component Shapes
113
Evaluation of Homogeneity
The evaluation of homogeneity and brightness are
based on the same principle to a large extent. The
difference is, that only the amplitudes of the
gradients in the evaluation area are calculated in
advance. The mean value of the gradient on the
circular area or on the ring is the characteristic for
each ball which is compared to the threshold (40 in
this example).
5-18: The result image shows the evaluation of the coating for each ball.
Balls that are sufficiently coated are marked in
green.
Balls that are insufficiently coated are marked in
red.
The inserted numbers represent the calculated
characteristic (left) and the ball number (in
squared brackets [ ]).
Component Shapes
New SIPLACE Vision Functions for 605 and 701 Station SW SIPLACE Vision Flux Inspection – only in 605 SW
Student Guide SIPLACE Vision (Customer)
Component Shapes Edition 12/2008 EN
114
5-19: The result diagram shows the calculated characterisitcs per ball.
The ball numbers are given along the X axis (128 in this example). The calculated characteristic per
ball is given along the Y axis.
The horizontal line in turquoise represents the threshold being set.
All balls whose characteristics are below the threshold are shown in green in the result image (see
above).
All balls whose characteristics are above the threshold are shown in red in the result image (see
above).
Parameterization
The parameterization is carried out on the station during shape component teaching using the algorithm
parameters in the programming area labeled
Flux inspection
.
Selection of the Analyzing Procedure
Initially, 2 procedures (brightness and homogeneity analysis) are provided as described.
Both procedures return a characteristic value per ball that is compared to a threshold. If the characteristic
exceeds the threshold, that is to be set here, the ball is characterized as insufficiently coated.
The procedures differ in the anlysis area.
Analysis is either carried out on the entire circular area, defined by means of DonutOuter (see 0 setting
of the evaluation area), or on the area of the circular ring (Donut), defined by means of DonutOuter and
DonutInner. Thus 4 different analysis variants are offered in total.