Train bogie bearing service process monitoring and fault diagnosis system and method

Abstract

The invention discloses a train bogie bearing service process monitoring and fault diagnosis system and method. The system comprises vibration sensors, a collecting board card, an AD chip, a digital signal processing board card and a diagnosis service mainframe, the digital signal processing board card is of a double-processor architecture with a DSP (digital signal processor) and an FPGA (field programmable gate array), the vibration sensors are arranged on an axle end cap of a train, and each bogie is provided with four vibration sensors. The vibration sensors collect vibration signals of a bogie bearing, analog signals are acquired through the collecting board card integrating amplifying and filtering functions, digital signals are acquired after the AD chip samples the analog signals and then input into the FPGA of the digital signal processing board card, and the FPGA primarily preprocesses the collected digital signals, inputs the same into the DSP to complete preprocessing and sends results to the diagnosis service mainframe for analyzing, fault diagnosis and fault grading. The train bogie bearing service process monitoring and fault diagnosis system and method has the advantages of low cost, high engineering implementation performance and capability of realizing online realtime monitoring.

Description

technical field [0001] The invention relates to the key technical field of in-transit monitoring and safety early warning of urban rail trains, in particular to a system and method for monitoring and fault diagnosis of train bogie bearings in service. Background technique [0002] The bogie is an important part of the train, supporting the car body and the equipment in the car body, and plays a decisive role in the dynamic performance, safety performance and traction performance of the train. The axle box bearing is one of the most widely used components in the train bogie. The types of bearings currently used are rolling bearings, and their operating environment is complex and engraved. During the operation of the train, the rolling bearings need to bear huge gravity loads and huge impacts caused by the train turning, passing through the turnout and the rail joint, so rolling bearings are also used for train steering. One of the most vulnerable key components of the rack. ...

AI Technical Summary

Problems solved by technology

This method can detect the early fatigue wear of rolling bearings, but it is not suitable for grease lubricated bearings, and there are problems such as inconvenient sampling

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