An elevator motion alert system is configured to alert a person (46) of an object (24, 26) moving in at least one hoistway (28) of an elevator system (20). The elevator motion alert system includes a sensor (40, 56) configured to detect object motion. A transmitter (42, 54) of the elevator motion alert system is carried by the object and is configured to transmit a pressure wave (50, 60) at a pre-defined frequency upon movement of the object. An electronic device (44) of the elevator motion alert system is configured to receive and process the pressure wave (50, 60) for alerting the person (46) of object movement.
ELEVATOR MOTION ALERT SYSTEM
AUFZUGSBEWEGUNGSWARNSYSTEM
SYSTÈME D'ALERTE DE MOUVEMENT D'ASCENSEUR
2017-05-24
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |