Method for discrete sampling vibration monitoring instrument to store data

Abstract

The invention discloses a method for a discrete sampling vibration monitoring instrument to store data. The method comprises the steps of establishing a database file with the constant size by the discrete sampling vibration monitoring instrument according to the size of a storage space provided by the instrument; conducting FFT (Fast Fourier Transform Algorithm) on sampling data to obtain frequency spectrum data, and selecting the preset number of frequency spectrum data, which is useful for the fault diagnosis analysis of the vibration in the frequency spectrum data; and storing the frequency spectrum position and the amplitude of each selected frequency spectrum data into the established database file. According to the method, the reliability of the discrete sampling vibration monitoring instrument can be improved.

Description

technical field [0001] The invention relates to the field of vibration monitoring fault diagnosis, in particular to a method for storing data of a discrete sampling vibration monitoring instrument. Background technique [0002] Vibration monitoring instruments are widely used in the fields of electric power, metallurgy and machinery to monitor the vibration of equipment and ensure the safe and reliable operation of equipment. At present, there are mainly two data acquisition methods for vibration monitoring instruments, one is peak hold, which obtains the amplitude of vibration, which is a single integer or floating point number; the other is discrete sampling, and the length of each group of data is 2n, usually 256 , 512 and 1024 points, etc. In addition to the amplitude, it can also display the waveform of the vibration, and can perform spectrum analysis and fault diagnosis. With the development of computer technology and the needs of users for vibration analysis, discret...

AI Technical Summary

Problems solved by technology

Frequent writing of data will cause damage to the storage medium, especially when the data is being written, the sudden power failure will cause damage to the file and file allocation table, making the instrument unable to work normally

[0004] It can be seen that in the prior art, the current vibration monitoring instrument cannot store data, or only store amplitude data with a small amount of data in the form of a file, and do not store waveform data with a large amount of data.

Therefore, because the vibration monitoring instrument cannot store data or the data storage method is inappropriate, the reliability of the instrument is seriously affected.

Images