An anomaly detection method for vibration data electromagnetic interference
A vibration data and anomaly detection technology, applied in the measurement of interference from external sources, measurement of electricity, measurement devices, etc., can solve the problem of inaccurate electromagnetic interference, insufficient detection of electromagnetic interference in vibration data, and lack of mature and reliable detection of electromagnetic interference in vibration data. and other issues, to achieve the effect of strong practicability and wide coverage
Active Publication Date: 2021-10-15
CYBERINSIGHT TECH CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The above method focuses on the elimination of electromagnetic anomaly interference, but does not realize the anomaly detection of electromagnetic interference in vibration data
In addition, the pulse components in the vibration data that do not exceed the range of the sensor are not necessarily caused by electromagnetic interference, and it is not accurate enough to simply regard pulse interference as electromagnetic interference
At the same time, some mainstream vibration status monitoring manufacturers in the market have not yet developed relevant functions for abnormal detection of electromagnetic interference in vibration data, and there are deficiencies in the detection of abnormal electromagnetic interference in vibration data.
It can be seen that there is no mature and reliable method for abnormal detection of electromagnetic interference in vibration data.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0064] The following uses the simulation data to introduce the implementation of abnormal detection of vibration data electromagnetic interference involved in the present invention. With the sampling frequency fs=12800Hz, a set of electromagnetic interference vibration data of 20s is generated, and the vibration waveform is as follows Figure 5 As shown, the corresponding spectrum is as Figure 6 shown.
[0065] Using the method of the present invention to calculate the corresponding amplitudes of 50Hz, 100Hz, 150Hz, and 200Hz in the low frequency part of the frequency spectrum are 0.598m / s respectively 2 、0.806m / s 2 、0.997m / s 2 、0m / s 2 .
[0066] Adopt the band-pass filter that bandwidth is 800Hz to carry out sliding band-pass filtering to high-frequency part (1000Hz-4500Hz), and sliding step size is 400Hz, carries out envelope spectrum analysis to the vibration data after filtering, and calculates by the method described in the present invention The amplitude E of the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
This application relates to an abnormal detection method for electromagnetic interference of vibration data, including abnormal detection of vibration data low-frequency interference by power frequency and its harmonics and vibration data high-frequency abnormal detection of electromagnetic interference, and may also include abnormal detection caused by electromagnetic interference Abnormal detection of vibration data exceeding the sensor range and abnormal detection of electromagnetic interference in frequency bands higher than the upper limit of the frequency response of the vibration sensor. The vibration data anomaly detection method provided by the invention can identify most situations of vibration data electromagnetic interference, and has wide coverage and strong practicability.
Description
technical field [0001] The present application relates to an abnormality detection method for vibration data electromagnetic interference, which is applicable to the technical field of industrial equipment condition monitoring. Background technique [0002] In the field of industrial equipment condition monitoring, vibration monitoring is a main means of equipment condition monitoring. By monitoring the mechanical vibration of different parts of the equipment and analyzing and processing the vibration data, equipment fault diagnosis and fault warning can be realized. In practice, the quality of equipment vibration data is directly related to whether the monitoring results are reliable. Using abnormal vibration data or speed data to evaluate the unit status not only fails to identify the health status of the equipment, but sometimes even causes the monitoring system to falsely report faults, which seriously affects the application experience of the vibration monitoring system...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00G01R31/00
CPCG01H17/00G01R31/001
Inventor 朱瑜金超晋文静
Owner CYBERINSIGHT TECH CO LTD