This wire rope inspection system (100) is provided with a control unit (21) for performing control to inspect a status of a wire rope (101) based on first measurement data (201a) and second measurement data (201b) that differ in the measurement date and time. The control unit is configured to align a waveform of first measurement data and a waveform of second measurement data such that an inspection operation start point of the elevator of the first measurement data and an inspection operation start point of the elevator of the second measurement data coincide with each other.

This wire rope inspection system (100) is provided with a control unit (21) for performing control to inspect a status of a wire rope (101) based on first measurement data (201a) and second measurement data (201b) that differ in the measurement date and time. The control unit is configured to align a waveform of first measurement data and a waveform of second measurement data such that an inspection operation start point of the elevator of the first measurement data and an inspection operation start point of the elevator of the second measurement data coincide with each other.

An arrangement for monitoring an elevator, including at least one elevator rope and an entity along which the at least one elevator rope is arranged to travel at least in part, includes at least one inductive sensor positioned so that a magnetic field generable by the at least one inductive sensor extends at least in part over the at least one elevator rope; and a control device for obtaining measurement data from the inductive sensor. A method for monitoring the elevator, a computer program product and an elevator system are also disclosed.

Provided is a wire rope flaw detector according to the present invention includes a magnetizer configured to form a magnetic path in a predetermined segment of a wire rope, a magnetic sensor configured to detect a leakage magnetic flux generated from the wire rope, and a protective cover configured to prevent the wire rope from being brought into contact with the magnetic sensor. The wire rope flaw detector further includes a magnetic sensor protecting member configured to prevent the protective cover from being brought into contact with an upper face of the magnetic sensor so as to prevent application of a pressure equal to or larger than a predetermined pressure to the magnetic sensor.

A magnetic body inspection device (100) is a magnetic body inspection device for inspecting states of a plurality of magnetic bodies (W) by a total magnetic flux method that measures a magnetic flux inside the magnetic body (W). The device includes a plurality of detection coils (10) each for detecting the magnetic field of each of the magnetic bodies (W), an excitation unit (11) provided for the plurality of magnetic bodies (W), and a detection signal output unit (12) for outputting a detection signal based on the magnetic field of each of the magnetic bodies (W).

Systems and methods may be employed to identify high-wear sections of a belt in an elevator system. Many buildings nowadays do not have the luxury of being able to regularly take an elevator system out of service to inspect an entire length of the belt from which an elevator car is suspended. One method to avoid this inconvenience involves storing position versus time data for an elevator car, determining which section of the belt engages with one or more sheaves in a hoistway based on the position of the elevator car, and identifying a high-wear section of the belt based on the position versus time data and at least one high-wear factor. One such high-wear factors concerns an amount of time that each section of the belt spends idly wrapped around a sheave.

Systems and methods may be used to monitor the integrity of a belt of an elevator system. Many buildings nowadays do not have the luxury of being able to regularly take an elevator system out of service to perform a giant magneto-resistance (GMR) scan of an entire length of the belt from which an elevator car is suspended. One method to avoid this inconvenience involves performing GMR scans of segments of the belt during the course of everyday passenger traffic and compiling data associated with different segments into a complete GMR profile for the belt. To determine whether the belt contains an irregularity, the GMR profile may then be compared to one or more baseline GMR profiles that were acquired previously, ideally at a time when the belt was known not to contain any irregularities.

The invention relates to an arrangement for condition monitoring of a rope of a hoisting apparatus. The arrangement for condition monitoring of a rope of a hoisting apparatus according to the present invention comprises one or more eddy current test units placed near said rope for generating a time-varying magnetic field, and for detecting a secondary magnetic field being generated by eddy currents in said rope as eddy current detection data, and an on-line monitoring unit receiving and utilizing said eddy current detection data for on-line condition monitoring of said rope, wherein an at least one eddy current test unit comprises: one or more printed circuit boards placed near said rope and arranged in a perpendicular direction in relation to the plane formed by adjacent load bearing members of said rope and parallel to each other, and arranged in a parallel direction or in a direction turned 20 degrees or less from the parallel direction in relation to the length of said rope, wherein at least one printed circuit board each comprises one or more eddy current inspection probes, each of said one or more eddy current inspection probes comprising two excitation coils and/or sensing coils near said rope.

A comprehensive information detection system for a steel wire rope, having a detection device, a stroke metering device, a data acquisition and conversion workstation, an alarm controller, and a terminal control master station is provided. The detection device further specifically has a steel wire rope electromagnetic detection device, a steel wire rope machine vision damage recognition device, a steel wire rope machine vision diameter measurement device, and a damage location marking device. The comprehensive information detection system for a steel wire rope may perform comprehensive evaluation on the damage situation of the steel wire rope and refine damage data information, thereby comprehensively improving the refinement degree of detection and the detection accuracy.

A magnetizer configured to form a main magnetic flux path so as to include a set interval in an axial direction of a wire rope includes a first pole piece and a second pole piece, which are arranged so as to sandwich the set interval therebetween, each have a U-shaped cross section which is formed so as to surround the wire rope in a circumferential direction of the wire rope for about a turn without coming into contact with the wire rope. When the wire rope is magnetized by the magnetizer, a leakage magnetic flux generated from the wire rope damaged portion is detected by a magnetic sensor.