Multilayer Perceptron for CAM in PCB Industry
NeuroCAM™ is a system for
correcting internal layer misalignment in multilayer printed circuits.
The system based on hardware, firmware and software is part of our
project patented in Italy
in 1994. The acronym CAM does not mean camera
but means Computer Aided Machinery. In fact, the system uses a probe connected
to the PCBs during the drilling of a patented test coupon with CNC machines, to
receive electrical signals and, using the signal delays, calculates the
misalignments of the internal layers. A software that implements a Multilayer Perceptron modifies the coordinates of the CNC Excellon drilling files of the printed circuit and the
Gerber files of the external layers in order to optimize the centering of the holes on the pads, respecting the expected
"mimimum annular ring". The system in 1994
was an excellent alternative to expensive x-ray machines and was then produced
by an Israeli company.
