Real-time measurement system for solid model surface flow field and its reprocessing method

Abstract

The invention discloses a real-time measuring system for a flood-controlling physical model testing surface flow-field in the water conservancy measuring technology field and a post-processing method thereof. The system and the method comprise technical scheme that the real-time measuring system for the flood-controlling physical model testing surface flow-field comprises an image acquiring module, an image management module, a flow-field calculating and post-processing module and a data fetching module. The post-processing method for the flood-controlling physical model testing surface flow-field comprises the steps as follows: tracer particles are evenly sprinkled on a water flow surface and are led to move along with the water flow; a vidicon is installed above the surface flow-field, and external synchronization can be realized through a videofrequency synchronizer; particle motion image signals are transmitted to a computer image grabbing card through a video line for analysis and treatment; and the flow velocity and the flow state of the flow-field are obtained. The real-time measuring system and the post-processing method thereof increase the velocity of flow velocity vector matching calculation, and lead the automation degree for removing error flow velocity vectors to be increased greatly.

Description

technical field [0001] The invention belongs to the technical field of water conservancy measurement, and in particular relates to a real-time measurement system and a post-processing method for the surface flow field of a solid model. Background technique [0002] In the existing model tests of river engineering, harbor engineering and hydraulic engineering, there are roughly two types of measurement methods for the velocity of water flow: [0003] The first type of method is a single-point velocity measurement method. For example: buoy tracer manual timing method, this method is time-consuming and laborious and has low accuracy; propeller current meter measurement method has improved measurement accuracy compared with the former, but the minimum flow velocity measured by it is 2.0cm / s, And when the sediment content is high, its measurement accuracy is reduced or even difficult to use; similar instrument measurement methods include ultrasonic flow meter measurement method,...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a real-time measurement system of the surface flow field of a solid model and its post-processing method, so as to solve the problem of slow calculation speed and wrong flow velocity vector in the process of measuring the surface flow field of a large-area water area of ​​the solid model at present. Defects that require manual handling

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