Online acoustic Doppler flow monitoring system and method

Abstract

The online acoustic Doppler flow monitoring method comprises the following steps: respectively selecting a direct-current river channel and a bent river channel as flow monitoring points; measuring the instantaneous water level of the river at a certain time period, and measuring the instantaneous flow rate corresponding to the instantaneous water level by using a Doppler flowmeter; instantaneous flow monitoring is repeated, multiple sets of instantaneous water levels and corresponding instantaneous flows in the time period are obtained, Q = (k0 + k *) H + b is obtained, and Q is flow; k0 is a direct flow river flow water level coefficient; k * is a bent river flow water level coefficient; b is a water level flow compensation constant; and substituting the corresponding river water level into the instantaneous function to obtain the real-time flow of the river, and multiplying the measured real-time flow by the corresponding time to obtain the accumulated flow of the corresponding water level of the river. According to the monitoring method, the relation between the water level and the flow of the direct-flow river channel and the water level and the flow of the bent river channel are established, and the actual flow of the river channel can be reflected approximately truly.

Description

technical field [0001] The invention relates to the technical field of river hydrological information monitoring, and more particularly, to an online acoustic Doppler flow monitoring system and method. Background technique [0002] The water regime changes in the river basin are mainly manifested in the rise and fall of the water level, the speed of the flow rate, the increase and decrease of the flow, the amount of sediment, and the changes of the water temperature and ice conditions of the river. Any changes may affect the safety of navigation. Therefore, it is necessary to monitor the velocity and flow of the watershed in order to ensure the real-time observation of the water regime changes in the watershed. In the existing technical solutions for river channel monitoring, the measurement point is usually selected first, and the monitoring of multiple points is used to reflect the real river flow situation. However, on the one hand, the existing monitoring methods have ...

AI Technical Summary

Problems solved by technology

[0003] The primary purpose of the present invention is to address the above-mentioned defects and deficiencies, solve the technical problems that the monitoring means in the prior art have made too much simplification to the fitting mathematical model, and the data reflect the river situation is not true enough, and provide an online acoustic Doppler flow monitoring method

Images