Large-scale lysimeter intelligent monitoring system

Abstract

The invention discloses a large-scale lysimeter intelligent monitoring system. A sensor monitoring point is arranged on the side wall of a box body of an earth-pillar lysimeter box device; soil with various different components is buried in the earth-pillar lysimeter box device in sequence in a layered mode from bottom to top for stimulating a soil condition under a natural environment; a water supply and drainage device is used for supplying and draining water to / from the box bottom of the earth-pillar lysimeter box device; a data acquisition device consists of a soil profile measuring negative-pressure meter probe, a TDR probe for measuring moisture content of soil, and a PT100 temperature sensor for measuring a soil temperature, and is arranged in the sensor mounting point; and data ofthe data acquisition device is transmitted to the measuring device to measure. On the basis of large-scale weighing type lysimeter equipment, the system can automatically perform data acquisition, display and storage on line in real-time by combining with a network communication technology, an image processing technology, a database technology and an automatic control technology, so that a researcher can efficiently perform data research and analysis.

Description

technical field [0001] The invention belongs to the technical field of farmland evapotranspiration equipment, and in particular relates to a large-scale lysimeter intelligent monitoring system. Background technique [0002] The lysimeter is a device for measuring water body transformation under limited three-dimensional boundary conditions. It is a common instrument for measuring farmland evapotranspiration and an essential facility for irrigation test stations. It is mainly used to determine the total evapotranspiration of plants, seepage rate, seepage volume and changes in soil water content, etc. in the various components of the water balance system. [0003] At present, lysimeters mainly include non-weighing lysimeters and weighing lysimeters. Non-weighing lysimeters are easy to install and low in cost, but have low precision and poor resolution. The large-scale weighing lysimeter is an important test device for the study of the water cycle of the groundwater-soil-vege...

AI Technical Summary

Problems solved by technology

[0005] However, the current lysimeter system has low precision, high cost and poor flexibility

In addition, the universality of its use and its combination with many modern measurement methods are also slightly insufficient. In terms of software, it is mainly a desktop application. When doing experiments, researchers need to frequently enter the test field to collect data and operate switches. , usually through manual timing to record monitoring data

In addition, the software functions are not comprehensive enough. Users cannot control the groundwater level and set system parameters according to the growth of plants or changes in the surrounding environment. The software functions are relatively single

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