Running part on-line monitoring system and method based on resonance demodulation technology

By arranging multiple vibration sensors on the traveling part and adopting resonance demodulation technology, combining noise reduction algorithms and fault frequency comparison, the problem of low accuracy and reliability of online monitoring of fault positioning in the existing technology of the traveling part is solved, efficient fault diagnosis and early warning are achieved, and equipment maintenance efficiency and safety are improved.

CN119688340AActive Publication Date: 2025-03-25DALIAN HAITIAN IND TECH CO LTD
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Patent Information

Application Number
CN202411888565.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2025-03-25
Estimated Expiration
2044-12-19

AI Technical Summary

Technical Problem

The existing online monitoring system of the travel department has low fault positioning accuracy in complex environments and low reliability of detection results, making it difficult to detect potential fault points in time.

Method used

The on-line monitoring system of the walking unit based on resonance demodulation technology is adopted. A number of vibration sensors are arranged in key parts such as the axle box, motor box, gear box and wheel hub through multiple vibration sensors. The data is collected and grouped, and the impact value is extracted in combination with the noise reduction algorithm, and compared with the lowest threshold value. The fault location is determined by the comparison of the fault frequency and the characteristic frequency, and finally the fault evaluation value is used to warn.

Benefits of technology

It improves the coverage and accuracy of fault diagnosis, reduces the impact of vibration fluctuations and interference on fault diagnosis, realizes early fault warning and maintenance reminder for the equipment, and improves the maintenance efficiency and service life of the equipment.

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Abstract

The invention relates to the technical field of vibration monitoring, and discloses a running gear on-line monitoring system based on a resonance demodulation technology, and the system comprises vibration sensors which are at least arranged at the positions of an axle box, a motor box, a gear box and a hub; the acquisition unit acquires operation data of all vibration sensors and divides the operation data into a plurality of groups of operation sub-data; a judgment unit performs noise reduction processing on each group of operation sub-data, extracts an impact value in the operation sub-data, compares the impact value with an impact minimum threshold value, and judges whether a fault position exists or not; the identification unit extracts the fault frequency in the operation sub-data and compares the fault frequency with the fault characteristic frequency to determine the fault position; the processing unit determines a fault evaluation value according to all fault positions and the impact value of each fault position; and the early warning unit performs early warning according to the fault evaluation value. According to the method, the fault position is positioned by comparing the fault frequency with the characteristic frequency, so that the accuracy and the real-time performance of fault diagnosis are improved.
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