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Marine main engine cylinder temperature signal feature extraction method and system

A technology of temperature signal and feature extraction

Pending Publication Date: 2022-08-09
SHANGHAI SHIP & SHIPPING RES INST
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Problems solved by technology

[0006] In order to solve the problems of low accuracy and low efficiency caused by manual judgment in the existing monitoring of each cylinder of the main engine, the present invention provides a method for extracting the temperature signal characteristics of the main engine cylinder of a ship. The main engine of the ship under working conditions, and uses a specific calculation method to calculate the eigenvalues ​​of the temperature signals at different positions of multiple cylinders, combined with a specific sorting method to obtain the overall score of each cylinder, which effectively improves the cylinder analysis of the main engine of the ship. Accuracy

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  • Marine main engine cylinder temperature signal feature extraction method and system
  • Marine main engine cylinder temperature signal feature extraction method and system
  • Marine main engine cylinder temperature signal feature extraction method and system

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Embodiment Construction

[0031] The present invention will be described below with reference to the accompanying drawings.

[0032] The invention relates to a method for extracting temperature signal characteristics of a main engine cylinder of a ship. The flow chart of the method is as follows: figure 1 shown, including the following steps in sequence:

[0033] The signal acquisition step, or further referred to as the data acquisition and abnormal point preprocessing step, collects the key signals of the main engine in the current time period and the temperature signals of multiple cylinders of the main engine at different positions, and performs abnormal point preprocessing on the key signals and temperature signals, Specifically, as figure 2 As shown, collect the power and speed data of the main engine in the current time period and the temperature signal data of multiple cylinders of the main engine at different positions. Among them, enter the field name corresponding to the monitored temperat...

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Abstract

The invention provides a marine main engine cylinder temperature sensor fault diagnosis method and system, and the method comprises a signal collection step, a stable working condition judgment step, a characteristic value calculation step and a cylinder score calculation step. Judging whether the main engine is in a stable working condition or not in the current time period, calculating characteristic values of temperature signals of different positions of each air cylinder of the marine main engine in the current time period, and sorting each air cylinder of the marine main engine by combining the size of each parameter value in the calculated characteristic values; the overall score of each cylinder is obtained through scoring according to the sorting result, the accuracy of marine main engine cylinder analysis can be effectively improved, and the accuracy of main engine equipment fault diagnosis and the reliability of forecasting can also be improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method and system for extracting temperature signal characteristics of a main engine cylinder of a ship. Background technique [0002] The daily operating cost of a ship is very high, and the effective operating time determines the profitability of the shipowner. The main engine of the ship is the core power device of the ship, and some failures will inevitably occur in the process of use. The occurrence of these failures will seriously affect the normal operation of the ship, not only the normal operation of the equipment, but also serious accidents and even endangering. Personal safety. The temperature signal of the main engine cylinder of the ship is an extremely important indicator in the mechanical failure of the main engine of the ship. Therefore, how to effectively monitor the state of the main engine cylinder of the ship, diagnose and troubleshoot quickly, and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/04G01K3/06G01K3/14
CPCG01M15/048G01K3/06G01K3/14Y02T90/00
Inventor 张焱飞
Owner SHANGHAI SHIP & SHIPPING RES INST
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