Predictive maintenance of door

A method for determining when to perform maintenance of a door, the method being performed by a maintenance determiner, the method comprising:

• performing a calibration procedure for the door to obtain reference data for the door;
• obtaining, from a first sensor, sensor data indicating kinetic performance of the door;
• defining a start time of the sensor data based on a first event detected by a second sensor, to enable synchronisation of the sensor data;
• dividing the sensor data in a plurality of time periods;
• evaluating the sensor data in each one of the plurality of time periods by comparing to the reference data respectively associated with each one of the plurality of time periods;
• and
• determining to perform maintenance based on the evaluation of the sensor data.

A maintenance determiner for determining when to perform maintenance of a door, the maintenance determiner comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the maintenance determiner to:
• perform a calibration procedure for the door to obtain reference data for the door;
• obtain, from a first sensor, sensor data indicating kinetic performance of the door;
• define a start time of the sensor data based on a first event detected by a second sensor, to enable synchronisation of the sensor data;
• divide the sensor data in a plurality of time periods;
• evaluate the sensor data in each one of the plurality of time periods by comparing to the reference data respectively associated with each one of the plurality of time periods;
• and
• determine to perform maintenance based on the evaluation of the sensor data.

A non-transitory computer readable medium storing a computer program for determining when to perform maintenance of a door, the computer program comprising computer program code which, when executed on a maintenance determiner, causes the maintenance determiner to:

• perform a calibration procedure for the door to obtain reference data for the door;
• obtain, from a first sensor, sensor data indicating kinetic performance of the door;
• define a start time of the sensor data based on a first event detected by a second sensor, to enable synchronisation of the sensor data;
• divide the sensor data in a plurality of time periods;
• evaluate the sensor data in each one of the plurality of time periods by comparing to the reference data respectively associated with each one of the plurality of time periods;
• and
• determine to perform maintenance based on the evaluation of the sensor data.