A belt management system of the present invention is formed by a management server (1) that manages belts that are used in a belt conveyor, a terminal (2) that is provided in a location where the belt conveyor is installed, and a data server (3) that is provided in a company that manufactures and sells belts, wherein the management server is provided with: a transceiver unit (10) that receives in time series belt remaining thickness data that shows the thickness of the belt and that is supplied from the terminal at each one of predetermined periods; and a belt lifespan prediction unit (11) that, by writing the belt remaining thickness data in the management database in time series, and reading from the management database the belt remaining thickness data that has been stored in time series, and dividing the difference between the predetermined periods by the usage amount of the belt at each of the predetermined periods, and determining a unit amount of change in the usage amount units, and subtracting from the most recent belt remaining thickness data a management threshold value which shows the thickness of the belt and which is to be used as an indicator for replacement, and dividing the result of this subtraction by the unit amount of change, determines a remaining lifespan that shows the future amount of use until the belt needs to be replaced.

A holographic 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 holographic 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 method and device for measuring the thickness of a coating material layer of a running strip according to which, by means of an eddy current sensor for at least one area of the strip, a quantity is measured, representative of the thickness of the coating layer and the thickness of the coating layer is determined from the measured quantity and from at least one calibration value. The measurement made with an eddy current sensor comprises the measurement of the complex impedance of a coil facing the running strip for a low excitation frequency and a high excitation frequency and the elaboration of a quantity representative of the thickness of the coating layer from said complex impedance measurements. A device for applying the method and a coating installation equipped with the device.

A Hall detection device for a thickness of a sheet medium is provided, including a mounting rack, a reference shaft and a floating wheel assembly, wherein the floating wheel assembly includes a bracket and at least one floating wheel, one end of the bracket being mounted on the mounting rack via a floating wheel rotary shaft and the other end thereof being rotationally fitted with the floating wheel so as to form a free end, a torsional spring is provided between the floating wheel rotary shaft and the bracket so that the floating wheel elastically bears against the reference shaft, and the bracket is fixedly mounted with a detection block and a sensor for detecting a displacement amount of the detection block.

In a first step, an output of an eddy current sensor is measured while a polishing target whose film thickness has been known is in contact with the polishing face, thereby obtaining a measurement value of the eddy current sensor which corresponds to the film thickness. In a second step, an output of the eddy current sensor is measured when the polishing target is polished while pressed against the polishing face, thereby obtaining a measurement value of the eddy current sensor that corresponds to a film thickness during polishing. A correspondence relationship between the film thickness of the polishing target and the measurement value of the eddy current sensor is determined from the measurement value obtained in the first step and the measurement value obtained in the second step.

A method for in-situ measurement of a thickness of a coating deposited by a deposition process, includes the steps of initiating deposition within a deposition chamber such that a first coating forms on an outer surface of a probe disposed in the deposition chamber, wherein the probe comprises a coil assembly including at least one coil, wherein the probe is separated by a distance from a substrate disposed within the deposition chamber; exciting the coil assembly with a first alternating current to produce a first time-varying magnetic field, the first time-varying magnetic field generating an eddy current in the first coating; determining a metric related to an inductance or resistance of the coil assembly, wherein a value of the metric is related to a first thickness of the first coating and results at least partially from an eddy current magnetic field produced by an eddy current in the coating; and correlating the first thickness of the first coating to a second thickness of a second coating deposited on a surface of the substrate.

A rolling stand for rolling a hot aluminium strip, having at the outlet side, in this order, a trimming device that cuts the metal strip from both sides such that only the remaining central region of the metal strip is fed to the downstream devices; a front deflection roller that deflects the metal strip away from a direct connecting line between the rolling stand and the rear deflection roller; a measuring assembly that has a mechanical excitation device that excites the metal strip to mechanically oscillate in the direction of its thickness and a measuring device that senses, for a plurality of regions of the metal strip lying adjacent to one another in the direction of the width of the metal strip, the amplitude of the excited mechanical oscillation of the respective region; and a coiling device that has a rear deflection roller upstream of a coiler.

A device for detecting thickness and thickness variation of a sheetlike object, includes at least a first guiding component and a plurality of second guiding components, deviation between the first guiding component and the second guiding components occurs while the sheetlike object passed through among the first guiding component and those second guiding components; a elastic member, having a first elastic displacement end, a second elastic displacement end and a elastic member fixed surface, both of the first elastic displacement end and the second elastic displacement have a plane disposed thereto and served to connect with each side of a movable elastic member, while the elastic member fixed surface is to fix the elastic member; and a displacement sensor is configured to detect a displacement of a side face on the first elastic displacement end. The present invention has the ability to raise the accuracy of the thickness and thickness variation detection.

An apparatus for chemical mechanical polishing includes a platen having a surface to support a polishing pad and an electromagnetic induction monitoring system to generate a magnetic field to monitor a substrate being polished by the polishing pad. The electromagnetic induction monitoring system includes a core positioned at least partially in the platen and a coil wound around a portion of the core. The core includes a back portion and a multiplicity of posts extending from the back portion in a first direction normal to the surface of the platen. The core and coil are configured such that the multiplicity of posts include a first plurality of posts to provide a first magnetic polarity and a second plurality of posts to provide an opposite second magnetic polarity, and the first plurality of posts and the second plurality of posts are arranged in an alternating pattern.

According to some embodiments disclosed herein, a system is provided to measure a tread of a tire. The system includes a nonmagnetic layer providing a drive over surface, a magnet, and a magnetic sensor associated with the magnet. The drive over surface is adapted to receive the tire thereon including the tread to be measured. The magnet has opposing first and second magnetic poles, the nonmagnetic layer is between the drive over surface and the magnet, and the magnet is arranged so that the first magnetic pole is between the second magnetic pole and the nonmagnetic layer. The nonmagnetic layer is between the drive over surface and the magnetic sensor, and the magnetic sensor is configured to detect a magnetic field resulting from the magnet and the tire on the drive over surface.