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Information terminal and machine component diagnosis system

a technology of information terminal and machine component, which is applied in the direction of machine component testing, structural/machine measurement, instruments, etc., can solve the problems of enormous data amount to be transmitted from the information terminal to the server, and achieve the effect of reducing the data amount and high-speed diagnosis of the machine componen

Inactive Publication Date: 2019-05-09
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a machine component diagnosis system. The system includes an information terminal and a vibration diagnosis unit. The vibration diagnosis unit detects the vibration of the machine component and filters it to obtain the predetermined frequency band. The information terminal analyzes the spectrum data obtained by the vibration analyzer and compares it with the damaging frequency resulting from the damage of the machine component. This allows for the diagnosis of abnormality of the machine component. The system reduces the amount of data transmitted from the analyzer to the information terminal, resulting in high-speed diagnosis. The database of damaging frequencies, which is maintained in the information terminal using the actual rotating speed of the machine component, keeps the specifications of the machine component confidential.

Problems solved by technology

Also, since the acceleration data and temperature data measured with the information terminal are transmitted to the server, as they are, and the server processes the data to diagnose the abnormality of the machine component, a data amount to be transmitted from the information terminal to the server becomes enormous.

Method used

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  • Information terminal and machine component diagnosis system
  • Information terminal and machine component diagnosis system
  • Information terminal and machine component diagnosis system

Examples

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first embodiment

[0035]Hereinafter, a machine component diagnosis system in accordance with a first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5.

[0036]FIG. 1 is a block diagram depicting a configuration of a machine component diagnosis system in accordance with the first embodiment. As shown in FIG. 1, a machine component diagnosis system 10 includes a wireless type vibration analyzer 20 (hereinafter, referred to as “analyzer 20”) and an information terminal 40. The machine component diagnosis system 10 is configured to diagnose a machine component. Meanwhile, in the below, a rolling bearing 11 will be exemplified as the machine component.

[0037]The rolling bearing 11 includes an outer ring 12 that is to be internally fitted to a housing, 15 or the like, an inner ring 13 that is to be externally fitted to a rotary shaft of a machine equipment (not shown), a plurality of rolling elements 14 rollingly arranged between the outer ring 12 and the inner rin...

second embodiment

[0081]FIG. 6 is a block diagram depicting a configuration of a machine component diagnosis system in accordance with a second embodiment of the present invention. As shown in FIG. 6, the machine component diagnosis system 10 includes the wireless type vibration analyzer 20 and the information terminal 40, and has a sound detection function of reproducing driving sound of the rolling bearing 11 by the speaker 46, in addition to the diagnosis function of the rolling bearing 11 described in the first embodiment. For this reason, in the second embodiment, the sound detection function is added to the diagnosis menu.

[0082]When detecting the driving sound, the temporal waveform of the vibration of the rolling bearing 11 acquired by the vibration sensor 21 is used. Therefore, the temporal waveform of the vibration is transmitted from the analyzer 20 to the information terminal 40. To this end, the machine component diagnosis system 10 of the second embodiment includes a filter processing un...

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Abstract

An information terminal is configured to extract a predetermined frequency band from a waveform of a signal of a machine component detected by a vibration sensor, to compare an analyzed frequency component and a damaging frequency resulting from a damage of the machine component, and to diagnose abnormality of the machine component. The information terminal includes a database in which the damaging frequency resulting from the damage of the machine component is preserved as a converted damaging frequency obtained by converting the damaging frequency on a basis of a predetermined rotating speed of the machine component. The damaging frequency is provided by calculating the converted damaging frequency in the database by using an actual rotating speed of the machine component. Accordingly, it is possible to keep specifications of a machine component confidential without preserving the specifications of the machine component.

Description

TECHNICAL FIELD[0001]The present invention relates to an information terminal and a machine component diagnosis system, and more specifically, to an information terminal configured to diagnose abnormality of a machine component and a machine component diagnosis system configured to diagnose abnormality of the machine component by using the information terminal and a vibration analyze.RELATED ART[0002]In the related art, a machine component diagnosis system including an information terminal and a server connected via a communication network and configured to diagnose abnormality of a machine component has been known (for example, refer to Patent Document 1). The information terminal of the machine component diagnosis system disclosed in Patent Document 1 includes a measured data transmission means for receiving measured acceleration data and temperature data and transmitting the same to the server, and a diagnosis result display means for displaying a diagnosis result returned from t...

Claims

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Application Information

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IPC IPC(8): G01M13/045
CPCG01M13/045G01H1/003
Inventor MIYASAKA, TAKANORISATO, YOSHIHIROMUTO, YASUSHIWEN, YINGYIYOSHIMATSU, OSAMU
Owner NSK LTD