Abstract: A method for monitoring the operation of an automatic door system (12) has the steps of: a. repeatedly receiving messages indicating at least one occurrence of a reverse event of a door (18) of the door system (12) by a monitoring unit (14), b. associating the at least one occurrence of a reverse event indicated in the message with a timestamp, c. aggregating the received occurrences of a reverse event based on the respective associated timestamps obtaining an aggregated set of events by the monitoring unit (14), and d. outputting a signal based on the aggregated set of events by the monitoring unit (14). Further, a monitoring unit (14), a door controller (22), a system (10) and a computer program are provided.

Abstract: A method for detecting an obstruction of a door (18) of an automatic door system (12) is provided. The automatic door system (12) comprises a door (18), at least one sensor (26), and a control unit (22) configured to control the motion of the door (18). The method comprises the following steps: a. receiving information about or determining when the door (18) is in its open state, b. after a predetermined hold open time has elapsed and if the door (18) cannot be closed, determining that the door (18) has been obstructed, and c. outputting a signal indicating that the door (18) is obstructed. Further, a detection unit (14) for an automatic door system (12), a system (10) as well as a computer program product are provided.