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Online automatic channel flow measuring method

An automatic measurement and channel technology, applied in the direction of volume/mass flow generated by mechanical effects, to achieve the effect of improving flow measurement accuracy, convenient installation and simple structure

Inactive Publication Date: 2015-04-22
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0010] The purpose of the present invention is to provide an online channel flow automatic measurement method to solve the problems of automatic channel flow detection, cost reduction, simple operation, convenient installation and easy maintenance, and at the same time improve the flow measurement accuracy

Method used

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Embodiment Construction

[0021] The specific embodiment of the present invention will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can reproduce the online channel flow automatic measurement method described in the present invention according to the specific embodiment, and can also implement the method described in the present invention. The above-mentioned online channel flow automatic measuring device.

[0022] Implementation of an on-line channel flow automatic measurement method provided by the present invention uses the water level and velocity method as the basic method for automatic channel flow measurement. The measurement parameters are set by the upper computer, and the micro-controller automatically subdivides the section into several partitions and automatically selects the characteristic measuring points. The average flow velocity of the vertical line where the flow velocity point is located is calculated by the posi...

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Abstract

The invention discloses an online automatic channel flow measuring method. Measuring parameters are set on an upper computer, a microcontroller automatically subdivides a fracture surface into a plurality of zones, feature measuring points are automatically selected, after the flow speed of one point of the fracture surface and the water level of the fracture surface are measured, the average flow speed of a vertical line where the flow speed point is located is worked out according to the flow speed distribution rule in the vertical line direction of the fracture surface, the measuring point position, the measuring point flow speed and the water depth value, the average vertical line flow speed in each zone is obtained according to the transverse distribution rule of the average flow speed, the average flow speeds in the zones are represented through the average vertical line flow speeds in the zones, summing is conducted after the flow of the zones is obtained, and then the total flow of the fracture surface can be obtained. The feature measurement points can be accurately, reliably and automatically positioned, the detection precision is improved, the automatic flow measurement is achieved, and labor input is reduced.

Description

technical field [0001] The invention relates to a channel liquid flow detection method, in particular to an online channel flow automatic measurement method using a water level flow velocity method. technical background [0002] Open channel flow measurement is an effective measure for saving water, improving irrigation quality and irrigation efficiency in irrigation districts, an important means for accurate water diversion, water delivery, water distribution and irrigation in the process of implementing water use plans, and also the main basis for verifying and calculating water fees. [0003] Rotary water meter. The wheel-type water meter consists of three parts: a wheel, a sink and a counter, and is currently mainly used in Australia and other countries. Its working principle is that when there is a certain water level difference between the upstream and downstream of the water meter, the runner rotates under the action of the water head, and the counter records the num...

Claims

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Application Information

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IPC IPC(8): G01F1/52
Inventor 马娟娟李京玲李永业
Owner TAIYUAN UNIV OF TECH
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