e-mail for inquiries: control@signaLynx.de back to www.buch-automation.de
In the last years as the result of the application of automated
production processes in the bookbindery the quality control carried out by very
efficient control systems gained great importance. A suitable sheet control
ensures higher reliability in production.
Very strong requirements of the market related to improved possibility
of identifying the sheets, prompted the Italian manufacturer Meccanotecnica to
develop a new control system “SignaLynx”. The system arose to enable the
customer to receive the whole production line on the Meccanotecnica - machines
including the quality control from one deliverer.
After
long-lasting research and experiments, aimed to overcome the limitations of the
old systems Meccanotecnica decided to apply the ultimate technology, using
digital identification with the CCD-Sensor-Camera that already caused
revolution on other market fields.
Construction
and operation
In principle the SignaLynx is a minimized digital
camera, build in a tight box. The device sends the data to its own computer,
able to transform and transmit large amount of files for a split second.
The system recognises multiple differentiating signs
and sorts of images. The comment from one of the users: „...by the high speed
of the machine it is very important and useful that this device uncovers so
quickly the differences in the sheets...”
On the pictures No. 2 - 6 you can see some model
sheets identified with SignaLynx on the machine running with the highest speed.
These examples show text sheets in all possible languages and positions, with
images, texts with images or with bar codes, placed on the printed sheets in
vertical or horizontal position. All quoted examples were detected and analysed
in just 20 milliseconds.
The density of the text. Identification with normal
sensibility.
Equal background, different texts. Identification with
low sensibility.
Equal background, similar texts. Identification with
normal sensibility.
Equal background with nearly equal text.
Identification with the highest sensibility.
Bar code, in horizontal or vertical position.
The size of the controlled area is
The speed and the versatility are the most important
abilities and advantages of the system, but what about the accuracy and
reliability? Basing on both the applied algorithm and the intelligence of the
system, developed through long-lasting years of experience, the sheet control
SignaLynx is a leading tool in accuracy and efficiency.
The
detecting ability of the scanned sheets provides such high an accuracy that the
unwanted stops of the production line occur very rarely. The false stops were
typical problems of the machines and made the operators lower the sensibility
of the control or – what even worse - completely switch the control system off.
The possibility of setting adequate sensibility for each sheet with just one
camera is the following development of this system.
Some particularly difficult
problems in the development of the algorithm project for the high power of the
SignaLynx system:
·
False stops caused by colour fluctuations,
wrongly folded sheets, swollen sheets etc. were significantly reduced.
·
The shortening of the learning phase
(only one image, picture or figure per one sheet). In this way the control of
the sheets may be introduced immediately. The recognition of the sheets is
possible on running or standing machines.
·
Possible recognition of some types
of problems on the gathering machines by the system itself (for example:
“Change the sheet number 3 with sheet number
·
The maximum amount of sheets in a
controlled pad: 230 sheets
·
The possibility to load down the sequence of bar codes to the gathering
machine over the customers Intranet - Network. Thanks to this system one can
omit some further controls in palettes circulation, lacking sheets, titles and
language variations.
The SPS/PC interface operates in digital mode and may
communicate both by a serial linkage (RS232/RS485) and over Ethernet with free
programmable protocols. Linkage to other machines controlling systems is thus
very quick and simple.
Currently Standard Bar Code 2/5 Interleaved and Code
39 are available but it is also possible to install other Data Matrix Codes.
The system recognises the bar code and deciphers the values. All data (like
order number, sheet number, total amount of good and bad sheets) may be used to
improve the production control.
It
is possible to transfer all this data collections in ASCII format over the
Ethernet - Interface and to exploit them (an original quotation from our
customer’s opinion) „for optimization of the logistic and production”.
Until now more than 400 cameras (on book sawing
machines, gathering and other machines) have been installed and they work to
full satisfaction of the users.
SignaLynx is another confirmation for Meccanotecnica
that the growing satisfaction of the clients may be achieved particularly by
new innovative technology, new products and exclusive customer service.
Address:
Buch-Automation GmbH * Bunsenstrasse 10 *
D-64293
Phone number +48 6151 92840 *
Fax +48 6151 928428
back to www.buch-automation. de e-mail: booksewing@buch-automation.de@buch-automation.de
Author of this
page : Frieder Kätscher *
Manager * Buch-Automation GmbH