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 comprising:
 a vibration sensor configured to detect a vibration of a machine component; and   at least one hardware processor configured to implement:
 analyzing the vibration of the machine component, 
 controlling performance of an operation on a basis of a first signal received from an information terminal, and 
 controlling transmission of a second signal, obtained as a result of the operation, to the information terminal, 
   wherein analyzing the vibration of the machine component comprises:
 extracting a predetermined frequency band from a waveform of the vibration; and 
 obtaining spectrum data from the waveform in the predetermined frequency band, 
   wherein the spectrum data comprises a frequency spectrum of the waveform in the predetermined frequency band, and   wherein the at least one hardware processor is further configured to control transmission of the spectrum data, comprising the frequency spectrum, to the information terminal.   
     
     
         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   the information terminal,   wherein the information terminal is configured to transmit the first signal to the vibration analyzer and to receive the second signal from the vibration analyzer,   wherein the information terminal comprises at least one second hardware processor configured to implement control of:
 comparing a frequency component, from the waveform, to a value corresponding to a predetermined frequency component that is predetermined to be generated by the machine component in a damaged state, 
 diagnosing an abnormality of the machine component as a result of comparing the analyzed frequency component to the value, and 
 a display unit configured to output a diagnosis result of diagnosing the abnormality. 
   
     
     
         4 . The machine component diagnosis system according to  claim 3 ,
 wherein the information terminal further comprises a database,   wherein the database comprises the value and a plurality of other values, and   wherein the other values respectively correspond to other predetermined frequency components that are predetermined to be generated by other machine components in other damaged states.   
     
     
         5 . The machine component diagnosis system according to  claim 4 ,
 wherein the machine component is a bearing,   wherein the predetermined frequency component that is predetermined to be generated by at least one of an inner ring, an outer ring, a rolling element and a cage of the bearing.