Abnormity diagnosis method, abnormity diagnosis device, and passenger conveyer with abnormity diagnosis device

Abstract

Provided are an abnormity diagnosis method, an abnormity diagnosis device, and a passenger conveyer with the abnormity diagnosis device. When abnormity of a mechanical device is diagnosed according to vibration values collected by a vibration sensor on the mechanical device, difference of each characteristic quantity, that is, a learning value characteristic quantity difference value is calculated according to a first learning vibration value of a first operating status collected by a vibration sensor when learning, and a second learning vibration value of a second operating status collected by the vibration sensor when learning, the second operating status being different with the first operating status. Difference of each characteristic quantity, that is, diagnosis value characteristic quantity difference value is calculated according to a first learning vibration value of a first operating status collected by a vibration sensor when diagnosing, and a second learning vibration value of a second operating status collected by the vibration sensor when diagnosing. The learning value characteristic quantity difference value and the diagnosis value characteristic quantity difference value are compared to determine whether exception occurs to the mechanical device or not.

Description

technical field [0001] The invention relates to an abnormality diagnosis method for diagnosing abnormality of mechanical equipment, an abnormality diagnosis device and passenger conveying equipment with the abnormality diagnosis device. Background technique [0002] Various abnormality diagnosis devices for escalators have been proposed in order to detect abnormalities of mechanical equipment, for example, escalators which are one type of passenger conveyance equipment (for example, Patent Document 1 to Patent Document 3). When abnormal vibration occurs in the escalator, it is likely to mean that an abnormality or a sign of abnormality has occurred, and by detecting the abnormal vibration, it is possible to take countermeasures against failure of the escalator as soon as possible. As a method of diagnosing an abnormality, a method of diagnosing an abnormality by sound, a method of detecting an abnormality by vibration, and the like are exemplified. [0003] prior art litera...

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Problems solved by technology

However, this method is the same as the method disclosed in Patent Document 2. When the environmental vibration changes due to long-term use and other reasons, false detection may occur.

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