Ship engine fault diagnosis system and method

Abstract

The invention discloses a ship engine fault diagnosis system. The system comprises an information acquisition module, a vibration signal characteristic extraction module, a signal processing module, adata acquisition module, an interface display module, a diagnosis module and a ship engine. The signal acquisition module comprises a plurality of sensors and is used for collecting signals. The signal processing module is used for converting the signals from a time domain into an angle domain. The vibration signal characteristic extraction module is used for carrying out EMD decomposition on vibration signals and then carrying out Hilbert change so as to acquire time frequency distribution of the vibration signals. The data acquisition module is used for collecting data. The interface display module is used for carrying out interface display on the signals collected by the data acquisition module through Labview programming. The diagnosis module is used for carrying out fault diagnosis on the ship engine. In the invention, an engine fault can be rapidly and accurately diagnosed and effective measures are taken, engine safety and reliability are increased, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of engine detection, in particular to a ship engine fault diagnosis system and method. Background technique [0002] The engine plays a key role in the development of the ship. The engine is not only the "heart" of the ship but also the source of power to promote the rapid development of the ship. Without a good engine, there can be no advanced ships. Every major revolutionary progress in the field of human navigation is closely related to the breakthrough and progress of engine technology. The research on condition monitoring and fault diagnosis technology of marine engine has a history of many years. It plays an important role in monitoring and evaluating the working state, change trend, life consumption and remaining life of the engine, and ensuring the safe and reliable operation of the engine. Because of this, marine engine fault diagnosis technology has been paid more and more attention by engine manu...

AI Technical Summary

Problems solved by technology

The complexity of the ship engine itself, the instability of the operating environment, the randomness of the operation process, the uncertainty of system noise and sensor accuracy will inevitably lead to a decrease in the accuracy of engine fault diagnosis, and even missed detection and misdiagnosis

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