Ship pollution bottom monitoring evaluation method and evaluation system

Abstract

The invention discloses a ship pollution bottom monitoring evaluation method and evaluation system. The method comprises the steps of firstly collecting ship operation data including ship state data,then performing quality screening on the data, removing low-quality data with relatively large data fluctuation by analyzing an average value, a maximum value, a minimum value and a standard deviationof original data signals, and meanwhile, screening a navigation stormy wave environment and a ship state to obtain data suitable for analysis; performing environmental factor correction on the screened data, correcting the influence of wind, waves, flow and water temperature on ship performance, and obtaining ship performance data which is close to an ideal environment but contains pollution bottom influence; and finally, comparing the ship performance data corrected by the environmental factors with a ship performance benchmark, analyzing and fitting the difference between the ship performance data corrected by the environmental factors and the ship performance benchmark to obtain an evaluation result, namely a performance reduction percentage value caused by pollution bottom, and when the value reaches a certain threshold value, giving a docking decontamination suggestion.

Description

technical field [0001] The invention relates to the technical field of ship sewage bottom treatment, in particular to a ship sewage bottom monitoring and evaluation method and evaluation system. Background technique [0002] Whether it is an ocean-going ship or an inland ship, due to long-term navigation in the water, aquatic organisms, such as shellfish and algae, are inevitably attached to the bottom of the ship. These bottom attachments are called ship fouling. [0003] The generation of ship fouling will increase the roughness of the ship, greatly increase the resistance of the ship, and then increase the fuel consumption of the main engine of the ship. Therefore, the monitoring and cleaning of ship fouling has become the focus of the world's ship and shipping industry. [0004] Since the generation of ship fouling is affected by many factors, such as navigation area, water temperature, and navigation speed, etc. will all affect the formation of ship bottom attachments,...

AI Technical Summary

Problems solved by technology

The physical monitoring and evaluation method requires a lot of manpower and material resources, and the evaluation method is costly and complicated

However, the existing software monitoring and evaluation method does not exclude low-quality data, which affects the evaluation effect; does not consider the impact of environmental factors such as wind and waves, resulting in deviations in evaluation results; cannot consider the impact of different trims on ship performance evaluation, resulting in insufficient fouling evaluation precise

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