Light barrier disturbance suppression unit has light source transmitter and stores measured received analogue values for comparison with time and voltage thresholds

摘要

A light barrier disturbance suppression unit has a light source transmitter and stores measured received analogue values (Um) in memory between the detector and processor for comparison within time limits (t1, 2, 3) certain (U3), possible (U2) and no event (U1) thresholds to trigger the processor input Analogue to Digital Converter and reset the timer input. Independent claims are included for an ASIC (Application Specific Chip) implementation of the unit and for procedures used by the unit.