Flow field intelligent calculation method and system based on acoustic Doppler flow measurer

Abstract

The invention discloses a flow field intelligent calculation method and system based on an acoustic Doppler flow measurer, and relates to the technical field of flow field calculation. The flow fieldintelligent calculation method comprises the following steps that, a velocity vector of a cross section of a river to be measured is detected; a river profile model is established to enable velocity space distribution and a real river way to be mutually mapped; feature extraction is carried out on velocity distribution data of an actual measured area; overall cross section velocity distribution isspeculated by taking the data of a real measuring area as a definite condition; and a flow rate is calculated through a flow field. According to the flow field intelligent calculation method and system based on the acoustic Doppler flow measurer, an intelligence artificial algorithm is adopted to replace the work of manual calibration, the flow field intelligent calculation method and system based on the acoustic Doppler flow measurer has the characteristics of high accuracy and high efficiency, and full automation in the whole process is achieved.

Description

technical field [0001] The invention relates to the technical field of flow field calculation, in particular to an intelligent flow field calculation method and system based on an acoustic Doppler flowmeter. Background technique [0002] Flow field distribution and flow measurement are important aspects of water body dynamic environment research, one of the important tasks of hydrologists, and also the most concerned parameters of water transportation, shipping, and fishery. It has very broad industrialization prospects and significant social and economic benefits. Its effective measurement technique has been attracting attention. With the development of science and technology, the requirements for flow field and flow measurement are gradually increasing. How to measure real-time, fast, accurate and large-scale is the main direction of the development of flow field distribution and flow measurement technology. [0003] Acoustic Doppler Current Profilers (ADCP) use the acous...

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Problems solved by technology

Therefore, there is a large uncertainty in the calculation of the average flow velocity of the cross-section, and the requirements for the calibration process of the flow measurement system are relatively high. It is necessary to collect the calibration data of the relationship between different water levels and water areas, and at the same time, it is necessary to manually carry out the measurement of the measured flow and cross-sectional area. Calibration is time-consuming and labor-intensive, and the system adaptability is poor. Once the riverbed changes or the installation position of the equipment is adjusted, all the calibration work must be done again, resulting in a lot of duplication of labor and low efficiency.

[0005] However, the traveling acoustic Doppler current meter measures the flow field distribution of the entire section through a ship or other carriers. Although the measurement results have rich flow field information, they cannot meet the needs of real-time online measurement, and are especially not suitable for applications. Frequent task of river flow measurement

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