Floods identification method for different drainage basins

A recognition method and a technology of times, applied to pattern recognition in signals, character and pattern recognition, instruments, etc., can solve problems such as poor effectiveness and working mechanism relying on fixed parameters, so as to reduce errors, avoid increased judgment difficulty, and improve accuracy and speed effect

Pending Publication Date: 2021-09-24
GUIZHOU EAST CENTURY SCI TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a flood identification method for different watersheds, so as to solve the problem that in the prior art, the wave peak extraction needs more

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  • Floods identification method for different drainage basins
  • Floods identification method for different drainage basins
  • Floods identification method for different drainage basins

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Experimental program
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Embodiment Construction

[0046] data collection:

[0047] Flow series data are identified using a full year of flow processes for each watershed. To a certain extent, the change of the flow series in the whole year is identified when the period of one year is identified, and the overall accuracy is slightly higher. The flow sequence is hourly; at the same time, when identifying the real-time flow sequence, the best flow time sequence is used as a calculation recognition sequence from the current point to the time point of the previous year. The optimal flow sequence has been reached, so that more accurate results can be calculated.

[0048] Data preprocessing:

[0049]In order to increase the universality of the application and achieve better recognition of different flow sequences in different watersheds, when using the original flow for calculation, on the one hand, because the flow values ​​vary too much, the flow sequences of different watersheds, the calculated mean value and variance differen...

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Abstract

The invention discloses a floods identification method for different drainage basins. The method comprises the following steps: collecting flow sequence data and preprocessing the flow sequence data; initializing the preprocessed data to generate a mean value and a variance; performing high and low point extraction on the initialized data; updating an and sigma n based on the current traffic sequence data; performing staggered verification on the obtained 'high' point and 'low' point sequence, if at least one 'high' point is contained between every two adjacent 'low' points, generating a wave crest, otherwise, abandoning the 'low' point; finally discriminating the generated wave crest sequence, and determining the rising point and the water recession point of the flood in the session according to the wave crest; the problems that in the prior art, during session flood recognition, auxiliary intervention of more human experience knowledge is needed for peak extraction, or the working mechanism of the method excessively depends on preset fixed parameters, the effectiveness is poor, and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of flood forecasting, and in particular relates to a flood identification method for different river basins. Background technique [0002] Traffic series is essentially a time series of information data. In recent years, with the development of big data and artificial intelligence, the analysis of time series and the extraction of important information have also been further developed; time series traffic analysis It has also been gradually applied in hydrology, through the analysis of time series flow combined with the law of floods in the same period of history to conduct research on flood identification. [0003] When calculating the flood frequency, the flood process is artificially split; generally, the flood corresponding to the maximum peak flow is used as the flood process; the results of the flood frequency provide the basis for the establishment of flood control projects, and the definition of the ...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06F2218/10G06F2218/00
Inventor 韦红敏王晓勇梁志孟丽李莎莎熊文慧李桥田侣刘金洋韦明达
Owner GUIZHOU EAST CENTURY SCI TECH CO LTD
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