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

A solid model, real-time measurement technology, applied in fluid velocity measurement, measuring device, velocity/acceleration/shock measurement, etc., can solve problems such as slow calculation speed and wrong flow velocity vector, and achieve speed improvement, time delay reduction, and automation The effect of increasing

Active Publication Date: 2009-06-24
TSINGHUA UNIV
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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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  • Real-time measurement system for solid model surface flow field and its reprocessing method
  • Real-time measurement system for solid model surface flow field and its reprocessing method
  • Real-time measurement system for solid model surface flow field and its reprocessing method

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Embodiment Construction

[0041] figure 1It is a schematic diagram of the configuration of the hardware system implementing the present invention. The hardware for running a solid model surface flow field real-time measurement system provided by the present invention includes: one or more front-end data acquisition subsystems, a router and a remote main control computer. Among them, the front-end data acquisition subsystem includes 4 CCD cameras, 1 video synchronizer, and 1 microcomputer with built-in image acquisition card; several front-end data acquisition subsystems, network equipment, and remote main control computer constitute the overall measurement system. In addition, the practice of the present invention requires the use of tracer particles. During the test, the tracer particles are evenly spread on the surface of the water flow and made to follow the water flow. The camera is installed above the flow field of the river engineering model and is synchronized externally through a video synchro...

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P5/20
Inventor 胡德超钟德钰张红武卜海磊张昊
Owner TSINGHUA UNIV
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