Patent ID: 11884516
Assignee: OTIS ELEVATOR COMPANY
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 5:
6. An elevator system, comprising:
a hoistway;
an elevator car movable along the hoistway;
one or more electrically-conductive tension members operably connected to the elevator car to move the elevator car along the hoistway; and
a health monitoring system for the one or more tension members, including:
a transmitter including a transmitter coil located the tension member;
a receiver located at the tension member; and
a controller operably connected to the transmitter and the receiver, the controller configured to:
direct an alternating current through the transmitter coil, resulting in the generation of a magnetic field and eddy currents at the transmitter coil; and
evaluate fluctuations in the magnetic field detected at the receiver, the fluctuations indicative of wear or damage to the tension member;

wherein the controller is configured to obtain position information from an elevator control system to locate and map locations of wear or damage of the tension member;
wherein the transmitter and the receiver are disposed at a same side of the tension member; and
wherein a position of the receiver is offset from a position of the transmitter relative to a lengthwise direction of the tension member.