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Most of the elevator manufacturers provide elevator monitoring system (EMS) that is attached to the elevator control system. Control systems have the real‐time information elevator status data. The control system can utilize the APC devices mentioned earlier, or other sensors of the elevator cabin. Inbuilt EMS systems have the advantage that they enable to measure vertical traffic continuously from all floors instead of taking samples of traffic patterns on some days from some floors. EMS can make statistics of the service quality level and elevator performance. Traffic display shows real time information of the elevator floor position, direction, door position and call status and vertical passenger‐counting (Figure 2.7).

Figure 2.7 Traffic view of E‐Link monitoring system (KONE Corporation).

Information of elevator and escalator systems from several buildings can be gathered by Remote elevator monitoring systems (REMS). A standard protocol associated with REMS was suggested by Beebe to enable the development of sophisticated applications for the IoT platform (Beebe 2016 ). In tall buildings, often a computer‐based Building Management System (BMS) is installed to control and monitor the building's mechanical and electrical equipment including elevators (Chapman 1994 ). A widely used data protocol is the Building Automation and Control Networks (BACnet) which has become a standard (ANSI/ASHRAE 135 1995; ISO 16484‐5 2003 ). The open source protocol provides a common interface for a number of building services such as elevator group, escalators, heating, and ventilation.