Industrial sound anomaly detection system based on phase coding and equipment information

A technology for abnormal equipment information and sound, which is used in manufacturing computing systems, measuring devices, character and pattern recognition, etc. It can solve the problems of complex and changeable production conditions, lack of information, indistinguishable differences between sub-equipment and short-term abnormalities. , to achieve the effect of avoiding acoustic interference, improving sensitivity, and excellent industrial sound anomaly detection performance

Active Publication Date: 2022-03-08
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

[0005] Currently, the processing of sound data is based on spectral information, but the phase information about the vibration offset is lost during the processing, which leads to loss of information and increased false detection rate
In the real factory scene, the production situation is complex and

Method used

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  • Industrial sound anomaly detection system based on phase coding and equipment information
  • Industrial sound anomaly detection system based on phase coding and equipment information
  • Industrial sound anomaly detection system based on phase coding and equipment information

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Embodiment 1

[0026] Industrial sound anomaly detection based on phase encoding and equipment information, obtain high-precision acoustic feature compensation from the phase offset of industrial sound signals, obtain modeling perception of different equipment from the perspective of equipment differences, and finally analyze industrial abnormal events detection. It is obvious that the perceptual accuracy of information determines the fineness and effectiveness of anomaly detection. Based on this, the present invention introduces the supplement and analysis of industrial production scene information, which effectively improves the performance of industrial sound anomaly detection.

[0027] details as follows:

[0028] (1) Introduction of acoustic phase offset and coding compensation.

[0029] The sound signal is a time-series vibration signal. In order to obtain more characteristic information, the industrial acoustic signal is mapped to the spectrogram feature in the frequency domain, and ...

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Abstract

The invention belongs to the technical field of industrial sound anomaly detection, and particularly relates to an industrial sound anomaly detection system based on phase coding and equipment information. The method can complement the fineness of an industrial sound signal by means of phase information, obtains high-precision acoustic features, can model the high-precision acoustic features, focuses on improving the sensitivity of the system to abnormal information, senses subtle differences between different industrial devices, avoids acoustic interference generated between the devices, and improves the reliability of the system. And the modeling result is subjected to high-efficiency and high-precision anomaly score judgment, and the industrial sound anomaly detection performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of industrial sound abnormality detection, and in particular relates to an industrial sound abnormality detection system based on phase encoding and equipment information. Background technique [0002] In the social life of the information age, when analyzing real-world data, a common need is to determine which instances are different. Such instances are called anomalies. Anomalies are caused by malicious behavior, system failure, intentional fraud, etc. and does not match most of the data distribution or match the expected pattern. Anomaly detection, also known as outlier detection, aims to identify all such distinctive instances through methods, models, and algorithms in a data-driven manner. [0003] Sound anomaly detection is to detect abnormal events that cause abnormal sounds through the analysis of acoustic signals. On the one hand, because abnormal sounds often indicate abnormal symptoms or malicio...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G01H17/00
CPCG01H17/00G06F2218/08G06F18/2415Y02P90/30
Inventor 关键柳友德肖飞扬兰海燕兰宇晨康金敏魏玉明谢明杰
Owner HARBIN ENG UNIV
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