Method and system for using digital twins for determining need for maintenance of an elevator

A system for detecting and/or predicting need for elevator maintenance, the system comprising an unmanned aerial vehicle (UAV) and a computer device or system, wherein

• the UAV is configured to collect data by one or more sensors of an unmanned aerial vehicle (UAV) operating within an elevator shaft and to provide the data to the computer device or system;
• and
• the computer device or system is configured
• to generate a first digital twin of the elevator based on the data provided by the UAV;
• and
• to define one or more threshold values for parameters associated with one or more components of the elevator appearing in the first digital twin;
• wherein the UAV is subsequently configured to collect further data by one of more sensors of the unmanned aerial vehicle (UAV) within the elevator shaft;
• and
• the computer device or system is further configured:
• to generate at least one second digital twin of the elevator using said further data;
• to compare each parameter of the elevator in the at least one second digital twin to the respective one or more first threshold values;
• and
• to automatically trigger a request for maintenance of the one or more components of the elevator if any one of the compared parameters meets or goes beyond the respective first threshold value.