Honeywell International Inc.
DIGITAL INPUT EDGE DETECTION WITH SMART FILTERING ALGORITHM

Abstract:

A method is provided that provides data analysis for sequence of events reporting in the operation of an industrial process. A digital filter and edge detector are provided that combines a method for excluding known invalid samples and a method for excluding samples taken while the input in the traveling range. The filtering method reduces the overhead on the CPU from managing the sequence of events machine and allows it to focus on performing safety functions.