Real-time surveying and mapping system and real-time surveying and mapping method for erosion and deposition topography around wading structure of river model

Abstract

The invention provides a real-time surveying and mapping system for the erosion and deposition topography around a wading structure of a river model. The method comprises the steps of fixing a bearingplatform to the periphery of a wading structure above the free water surface; assembling a surveying and mapping platform according to the plane shape of the wading structure; mounting the surveyingand mapping platform on the bearing platform; mounting a surveying and mapping device on the outer side of the surveying and mapping platform through threads. Based on the above link, a terminal computer issues an instruction, and the forward rotation of a stepping motor is realized; an ultrasonic transducer is driven to move away from the wading structure; when the ultrasonic transducer reaches the limiting switch at the far end, the ultrasonic transducer is started; through the reverse rotation of stepping motor, the ultrasonic transducer is driven to move in the direction close to the wading structure; the ultrasonic transducer can complete real-time scanning of three-dimensional underwater topography data in the moving process and wirelessly transmit the collected scouring topography data to the terminal computer in real time, the ultrasonic transducer reciprocates in this way until a river model experiment is finished, and the drawing system completes whole-process drawing of thedynamic scouring and silting topography around the wading structure.

Description

technical field [0001] The invention belongs to the technical field of water conservancy automation measurement, and in particular relates to a real-time surveying and mapping system for scouring and silting terrain around wading structures of a river engineering model. surveying method. Background technique [0002] The river engineering model is the physical structure of the prototype river channel reduced to an appropriate scale, and the evolution law of the prototype river can be reproduced by monitoring the erosion and deposition changes of the underwater topography during the simulation test. At present, there are many equipment and methods that can be used for 3D underwater terrain measurement of river engineering models at home and abroad. There are few reports on the equipment and methods of scouring and silting terrain surveying and mapping around wading structures in the experiment. Monitoring the local topography around wading structures, studying the deformati...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a simple structure, convenient operation, high precision and high efficiency real-time surveying and mapping system and method of scouring and silting topography for river engineering model wading structures, so as to solve the disadvantages of existing surveying and mapping systems and methods

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