Method and apparatus for measuring water utilization coefficient of end canal system
A technology that utilizes coefficients and ties water, and is applied in measurement devices, calculations, measurement capacity, etc., and can solve the problems of long time consumption and low efficiency.
Active Publication Date: 2019-04-05
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
[0003] In view of this, the purpose of the embodiment of the present application is to provide a method and device for measuring and calculating the water utilization coefficient of the terminal canal system, which can determine the metering points in the test irrigation area through image processing technology, and then determine the water utilization coefficient of the terminal canal system to solve the existing problems. In the technology, the time-consuming and low-efficiency problems caused by manually determining the metering point can be improved to improve the efficiency of the measurement and calculation of the water utilization coefficient of the terminal canal system
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[0105] The embodiment of the present application also provides a specific embodiment of a method for measuring and calculating the water utilization coefficient of the terminal canal system:
[0106] In the specific embodiment of the present application, a certain grape irrigation area in Xinjiang is used as a test irrigation area. The area of the test irrigation area is about 400 mu, and the irrigated plants are grapes. After actual investigation, it was found that the grape field planting structure is standardized, and it is distributed in border fields. Each grape field has multiple borders, and small channels are dug on both sides of each border for irrigation. There is a branch channel between each grape field, the branch channel is about 0.5m wide, and the distance between the plants in the farmland area on both sides of the branch channel is between 1.5-3m. There is a water outlet of about 5-6m on the branch channel, and the water outlet flows into each small channel ...
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The present application provides a method and an apparatus for measuring a water utilization coefficient of an end canal system. The method comprises: obtaining an image of a test irrigation area; positioning an end canal with the water utilization coefficient of the end canal system to be measured, in the image; determining a non-field channel of the end canal according to the image; determiningthe water inlet on the end canal as an inlet measurement point, and the water outlet on the non-field channel as an outlet measurement point; after setting measurement instruments on the inlet measurement point and the outlet measurement point respectively, obtaining the flow rate of each measurement point according to the measurement data of each measurement instrument; and determining the waterutilization coefficient of the end canal system according to the flow rate of each measurement point. According to the technical scheme of embodiments of the present application, the measurement points in the test irrigation area can be determined by using an image processing technology, and the water utilization coefficient of the end canal system can be further determined, so that the problems of long time consumption and low efficiency caused by manually determining the measurement points in the prior art are solved, and efficiency for measuring the water utilization coefficient of the endcanal system is improved.
Description
technical field [0001] The present application relates to the technical field of water conservancy, in particular, to a method and device for measuring and calculating the water utilization coefficient of an end canal system. Background technique [0002] When the terminal canal system is irrigating the irrigation area, there are many canal branches between the farmlands, and there are many water outlets on the canal branches, which are used to more accurately irrigate the water in the canal system to each piece of farmland. When measuring and calculating the water utilization coefficient of the terminal canal system, it is necessary to determine several water outlets among the many water outlets as the outlet metering points. According to the results of manual investigation, it is time-consuming and inefficient. Contents of the invention [0003] In view of this, the purpose of the embodiment of the present application is to provide a method and device for measuring and ...
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IPC IPC(8): G01F1/66G01F13/00G06T7/11
CPCG01F1/66G01F13/00G06T7/11G06T2207/10032
Inventor 徐志侠张金凤秦景赵勇马思超杨文杰刘聪贤徐怡博褚敏梁珂
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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