Vibration analyzer and machine component diagnosis system

Abstract

A vibration analyzer is configured to analyze vibration of a machine component and which is capable of performing an operation on a basis of a signal received from an information terminal and transmitting a signal obtained as a result of the operation to the information terminal. The vibration analyzer includes a vibration sensor configured to detect a vibration of the machine component, a filter processing unit configured to extract a predetermined frequency band from a waveform of a signal detected by the vibration sensor, and a calculation processing unit configured to analyze frequency of a waveform after filter processing obtained by the filter processing unit and to obtain spectrum data. Accordingly, it is possible to reduce a data amount to be transmitted between the analyzer and the information terminal, thereby shortening data transfer time.

1 . A vibration analyzer which is configured to analyze vibration of a machine component and which is capable of performing an operation on a basis of a signal received from an information terminal and transmitting a signal obtained as a result of the operation to the information terminal, the vibration analyzer comprising:
 a vibration sensor configured to detect a vibration of the machine component;   a filter processing unit configured to extract a predetermined frequency band from a waveform of a signal detected by the vibration sensor; and   a calculation processing unit configured to analyze frequency of a waveform after filter processing obtained by the filter processing unit and to obtain spectrum data.   
     
     
         2 . The vibration analyzer according to  claim 1 ,
 wherein the vibration analyzer is a wireless type vibration analyzer.   
     
     
         3 . A machine component diagnosis system comprising:
 the vibration analyzer according to  claim 1 ; and   an information terminal capable of transmitting and receiving a signal to and from the vibration analyzer,   wherein the information terminal comprises:   a diagnosis unit configured to compare a frequency component, which is included in the spectrum data transmitted from the vibration analyzer, and a damaging frequency resulting from a damage of the machine component, and to diagnose abnormality of the machine component; and   a display unit configured to output a diagnosis result diagnosed by the diagnosis unit.   
     
     
         4 . The machine component diagnosis system according to  claim 3 ,
 wherein 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, and   wherein the damaging frequency is provided by calculating the converted damaging frequency in the database by using an actual rotating speed of the machine component.   
     
     
         5 . The machine component diagnosis system according to  claim 4 ,
 wherein the machine component is a bearing,   wherein in the database, a bearing damaging frequency resulting from damages of an inner ring, an outer ring, a rolling element and a cage of the bearing is preserved as a converted bearing damaging frequency obtained by converting the bearing damaging frequency on a basis of a predetermined rotating speed of the bearing, and   wherein the bearing damaging frequency is provided by calculating the converted bearing damaging frequency in the database by using an actual rotating speed of the bearing.