Object detection arrangement - contains light source and receiver, comparator with comparison voltages controlled by micro-controller

摘要

The arrangement contains a light transmitter and receiver. The receiver signal is fed to at least one comparator (10) which detects on and off switch conditions relative to a comparison voltage on its other input. The comparator output is fed to the signal input of a micro-controller (11). The comparison voltages are generated via resistances connected to the second comparator input and activated by corresp. switching outputs of the micro-controller. USE/ADVANTAGE - For detecting all types of object which influence light transmission between source and receiver. Enables signal level monitoring with min. circuit costs. High degree of flexibility.