Automatic control method and device for irrigation

An automatic control device and power control technology, applied in watering devices, botany equipment and methods, gardening, etc., can solve the problems of unsuitable popularization and application, unsuitable crops, low economic benefits, etc., and achieve flexible design and low cost Low cost and improved utilization efficiency

Inactive Publication Date: 2015-04-01
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the structure of these devices is generally more complicated, and the cost is relatively high.
It is not suitable for crops with low economic benefits, so it is not suitable for popularization and application

Method used

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  • Automatic control method and device for irrigation
  • Automatic control method and device for irrigation
  • Automatic control method and device for irrigation

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Such as figure 1 As shown, it is a flow chart of the steps of the irrigation automatic control method provided by the embodiment of the present invention.

[0041] The automatic control method specifically includes the following steps:

[0042] S1: Set the lower limit of irrigation and the upper limit of irrigation;

[0043] S2: measure the current soil matric potential;

[0044] S3: When the soil matrix potential reaches the irrigation lower limit, send out an irrigation control signal, and record the irrigation start time t i1 and water volume W i1 ; When the soil matric potential reaches the upper limit of irrigation, send a control signal to stop irrigation, a...

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Abstract

The invention relates to the technical field of crop irrigation control and management, in particular to an automatic control method and device for irrigating crops according to soil matrix potential. The automatic control method for the irrigation includes that setting a lower irrigation limit and an upper irrigation limit; measuring the current soil matrix potential; when the soil matrix potential arrives at the lower irrigation limit, sending out an irrigation control signal, and recording the irrigation starting time ti1 and water amount Wi1; when the soil matrix potential arrives at the upper irrigation limit, sending out an irrigation stop control signal, and recording the irrigation ending time ti2 and water amount Wi2, wherein the lower irrigation limit is the soil matrix potential at the beginning of irrigation, and the upper irrigation limit is the soil matrix potential at the ending of irrigation. The automatic control method and device for the irrigation are capable of effectively improving the irrigation automation, the scientific level of the agricultural water management and the utilization efficiency of irrigation water.

Description

technical field [0001] The invention relates to the technical field of crop irrigation control and management, in particular to an automatic control method and device for crop irrigation based on soil matrix potential. Background technique [0002] Water is the source of life, the key to production, and the foundation of ecology. However, with population expansion, rapid economic and social development and unreasonable development and utilization of water resources, the contradiction between water supply and demand has become more and more prominent. As a country with a large population, a large agriculture, and a large developing country, China is facing more acute contradictions between supply and demand of water resources. As a large water user, agriculture has great potential for water saving. The utilization rate of irrigation water in my country's agriculture is low, and waste is common. At present, the average irrigation water utilization coefficient in my country ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/16
CPCA01G25/167
Inventor 王凤新张友良康绍忠郭林
Owner CHINA AGRI UNIV
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