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Continuous system based spray irrigation uniformity measurement method

A continuous system, uniformity technology, applied in the field of system analysis and evaluation, can solve the problem of ignoring continuous feature information, and achieve the effect of improving measurement accuracy

Inactive Publication Date: 2007-02-07
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The above calculation methods are all based on the statistical principle of discrete systems, ignoring the position information between measuring points and the continuous characteristic information of water volume distribution, and essentially calculating the sample uniformity of isolated limited measuring points

Method used

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  • Continuous system based spray irrigation uniformity measurement method
  • Continuous system based spray irrigation uniformity measurement method
  • Continuous system based spray irrigation uniformity measurement method

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Embodiment Construction

[0022] see figure 1 , the present invention is a method for measuring the uniformity of sprinkler irrigation based on a continuous system, taking the radially arranged rain gauge as an example, the steps of the method include:

[0023] Step 1: Arranging Rain Gauge Radially

[0024] by figure 1 The position of the sprinkler is taken as a dot, the range of the sprinkler is the radius, and the rain gauge is arranged radially. For the convenience of expression, the number of radial radial lines is set to 6 here.

[0025] Step 2: Measuring the precipitation depth value

[0026] Start the spray test and read the precipitation depth in the rain gauge.

[0027] Step 3: Establish a coordinate system

[0028] by figure 1 The position of the sprinkler head is used as the origin to establish the polar coordinate system OX, and use l i (i=1, 2, ... 6) represent the rain gauge radiation in the nozzle test, such as figure 2 shown. Make a circle Φ with the polar diameter from the ra...

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Abstract

The disclosed sprinkling even level detection method based on continuous system comprises: interpolating the detected data to obtain the unknown rainfall depth; when arranging the rainfall cylinders radially, taking two times cubic-spline interpolation to the radial and axial data for the unknown rainfall depth; or when arranging the cylinder as mesh structure, taking two times cubic-spline interpolation to the horizontal and vertical data for the unknown rainfall depth. This invention improves detection precision in theory.

Description

technical field [0001] The invention belongs to the field of system analysis and evaluation methods, and relates to a method for measuring the spraying uniformity of sprinkler devices used in farmland, gardens and flower nurseries, and in particular to a method for measuring the uniformity of sprinkler irrigation based on a continuous system. Background technique [0002] Sprinkler irrigation has become one of the widely used water-saving irrigation technologies in the world due to its advantages of wide adaptability and easy mechanization. The uniformity of sprinkler irrigation is an important index to measure the irrigation quality and the hydraulic performance of the sprinkler head, and is an important parameter in the planning and design of the sprinkler irrigation system. The uniformity of sprinkler irrigation can be directly calculated by the method of densely distributed measuring points, but generally due to the limitation of test workload and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00B05B3/02G01M99/00
Inventor 韩文霆汪有科吴普特冯浩牛文全
Owner NORTHWEST A & F UNIV
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