Non-full irrigation automatic control device

An automatic control device and insufficient technology, applied in program control, watering device, computer control, etc., can solve the problems of neglecting the control of the upper limit of soil moisture, time-consuming and laborious irrigation system, and unsatisfactory control, so as to avoid deep water depth. Leakage, avoid fertilizer leaching, easy to popularize effect

Inactive Publication Date: 2008-04-30
CHINA AGRI UNIV
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Problems solved by technology

[0004] The soil negative pressure gauge currently used is generally composed of a clay head, a water pipe and a vacuum gauge. It is necessary for the staff to record the reading of the vacuum gauge in time and compare it with the set target value to determine whether the crops are short of water. The irrigation system is manually controlled during irrigation. quite time consuming to operate
Fully automated irrigation systems have not yet been popularized in agriculture due to their high cost in China
At the same time, the control of the upper limit of soil moisture during irrigation is often ignored or not ideally controlled

Method used

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  • Non-full irrigation automatic control device

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Embodiment Construction

[0016] The present invention provides an automatic control device for insufficient irrigation, and Fig. 1 is a schematic structural diagram of the automatic control device for insufficient irrigation. The air collecting pipe 3 on the negative pressure gauge in the figure is connected to the vacuum gauge 6, the first Hall sensor 8 at the upper limit negative pressure gauge reading place set in the vacuum gauge, the second Hall sensor 8 at the lower limit negative pressure gauge reading place set in the vacuum gauge Hall sensor 15; And at the back side of the vacuum gauge head. The two Hall sensors are connected to the amplifying circuit 9 through wires, the amplifying circuit 9 is connected to the power control circuit 11 through the single chip microcomputer 10, the power control circuit 11 controls the water pump 12 of the water supply device, and the water storage tank 13 connected with the water pump 12 and the water delivery pipe 14.

[0017] The negative pressure gauge i...

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Abstract

The invention discloses an insufficient-irrigation automatic control device belonging to the water-saving technologies for field care of agriculture modernization and the field of automatic control apparatus, the technical scheme of which is that the gas gathering pipe of a negative pressure meter is connected with a vacuum meter which is provided with two Hall inducers connected by wires and an amplifying circuit, the amplifying circuit is connected with a power control circuit by a singlechip, and the power control circuit controls a water supply device. The device realizes automatic irrigation for fields, and irrigation can be automatically stopped after soil moisture reaches a certain value, which achieves the purpose of saving water, saving time, saving labor and reasonable irrigation. The device is invented for farmers and is low in costs and easy to operate.

Description

technical field [0001] The invention belongs to the field of agricultural modernization field management water-saving technology and automatic control equipment, in particular to an automatic control device for insufficient irrigation. Background technique [0002] Inadequate irrigation technology is a modern water-saving irrigation technology that pursues the highest water use efficiency of crops and takes into account both crop yield and quality under water shortage conditions. The key to popularizing this technology is to have an irrigation method that can effectively control the upper and lower limits of soil moisture. [0003] Compared with soil volumetric water content or weight water content, soil water potential is generally considered to be a better indicator of soil water availability for crops. Therefore, the upper and lower limits of soil moisture can be controlled by controlling the upper and lower limits of soil water potential. Soil negative pressure gauge i...

Claims

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Application Information

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IPC IPC(8): A01G25/16G05B19/042
Inventor 王凤新康绍忠冯绍元侯晓燕丁日升
Owner CHINA AGRI UNIV
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