Water body liquid level height and fertility detection device and detection method thereof

Abstract

The invention discloses a water body liquid level height and fertility detection device and a detection method thereof. A stainless steel nail array mode is adopted, and the water level between two nails is judged by measuring the conductivity between the metal nails, so that the height of the water surface is obtained. When the two stainless steel nails are connected by water, the conductivity between the two nails is increased; when the water level is reduced, and the two adjacent stainless steel nails are not connected by water, the conductivity between the two nails is small; the conductivity can be obtained by measuring the voltage value between the two metal nails. According to the scheme, the water level measurement precision only depends on H0 and HZ, the precision of the two parameters is controlled within + / -0.1 mm according to the precision of the current PCB production process, and the control requirement of current agricultural irrigation on the water level is completely met; the two stainless steel nails at the bottom are used for the conductivity of water, serve as a result of the water body conductivity EC0 value and also serve as a judgment value for judging that the water level height reaches the minimum measurement height, and one value has two purposes.

Description

technical field [0001] The present application relates to the technical field of agricultural irrigation, in particular, to a water body liquid level height and fertility detection equipment and a detection method thereof. Background technique [0002] Facing the fact that water resources are becoming increasingly scarce, the importance of rational irrigation has also become more prominent. The current control of farmland water level is mainly through manual observation and then manually controlling the valve switch for water supply and drainage valves. Not only is the workload heavy, but the control accuracy is poor. It is a major cause of agricultural water waste, so automated precision irrigation is very important. [0003] The principle of the water level detection equipment used in the current automatic irrigation system is mainly to use ultrasonic sensors. This sensor has two main disadvantages: First, the requirements for the installation environment are too high, and...

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Problems solved by technology

[0002] Facing the fact that water resources are becoming increasingly scarce, the importance of rational irrigation has also become more prominent. The current control of farmland water level is mainly through manual observation and then manually controlling the valve switch for water supply and drainage valves. Not only is the workload heavy, but the control accuracy is poor. It is a major cause of agricultural water waste, so automated precision irrigation is very important

[0003] The principle of the water level detection equipment used in the current automatic irrigation system is mainly to use ultrasonic sensors. This sensor has two main disadvantages: First, the requirements for the installation environment are too high, and it is necessary to ensure that a cone with the ultrasonic sensor probe at the apex It is not suitable for such complex environment as farmland; secondly, the measurement accuracy will not only be affected by the ambient temperature, but also gradually deteriorate with the use time.

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