OPTICAL ELECTRONIC SYSTEM FOR SETTING UP AND DIAGNOSTICATING A TECHNICAL CONDITION OF PAPER-MAKING MACHINES

摘要

The invention relates to the pulp-and-paper industry. The aim of said invention is to increase the fidelity of obtainable measuring information, to provide the addressed diagnosis of paper-making machines and to extend operating capabilities of the system by means of programming tools for the computer analysis of a signal and form used thereby for representing results of measurements. The technical result is attained by the use of a light-emitting diode or a semiconductor laser in the form of a radiation source. The inventive system is provided with a photodetector. An preamplifier is connected to the photodetector output, the preamplifier output is connected to the signal input of a digital potentiometer which is connected in series through a bandwidth filter, amplifier, amplitude detector and a low-pass filter to a reference amplifier whose output is connected to a controller analog input and to the input of an analog-to-digital converter. The controller output is connected to the control input of the digital potentiometer and the output of the analog-to-digital converter is connected to a personal computer via an interface.