Lysimeter water level automatic compensation system and method

Abstract

The invention relates to a lysimeter water level automatic compensation system and method. The system comprises a soil column, the bottom of the soil column is provided with a seepage pipe, one end of the seepage pipe is connected to the bottom of a water column by a pipe, the pipe between the seepage pipe and the water column is provided with a water supply and discharge switching solenoid valve, a water column water level sensor is arranged on the water column, the bottom of the water column is communicated with a water tank by a pipe, the pipe between the water column and the water tank is provided with a water supplement solenoid valve, and the water supply and discharge switching solenoid valve, the water column water level sensor and the water supplement solenoid valve are electrically connected to a data acquisition controller. The lysimeter water level automatic compensation system has a simple structure, realizes precision control and measurement by data acquisition controller calculation and control, has less power, is stable and reliable, can massively replace the existing manual observation lysimeter water supply and sewage system, greatly saves labor, improves an observation precision and has a high scientific research value and popularization meaning.

Description

technical field [0001] The invention relates to an automatic water level compensation system and a compensation method thereof, in particular to an automatic water level compensation system of a lysimeter used in the fields of hydrology, meteorology, water conservancy, agriculture, forestry and the like and a compensation method thereof. Background technique [0002] At present, in hydrology, meteorology, water conservancy, agriculture, forestry and other related fields of scientific research and conventional observation construction lysimeter projects, a lot of use based on the principle of the Marriott bottle, control the water head to adjust the water supply and drainage of the test pit, the pit body The lower seepage pipe is connected in parallel with the Marsh bottle, and the suction of the soil in the soil column is balanced by adjusting the negative pressure of the Marsh bottle. Since the Marsh bottle needs a pressure regulating bottle to control its negative pressure,...

AI Technical Summary

Problems solved by technology

[0002] At present, in hydrology, meteorology, water conservancy, agriculture, forestry and other related fields of scientific research and conventional observation construction lysimeter projects, a lot of use based on the principle of the Marriott bottle, control the water head to adjust the water supply and drainage of the test pit, the pit body The lower seepage pipe is connected in parallel with the Marsh bottle, and the suction of the soil in the soil column is balanced by adjusting the negative pressure of the Marsh bottle. Since the Marsh bottle needs a pressure regulating bottle to control its negative pressure, the When there is a shortage of water, the pressure needs to be released to replenish water, and the pressure regulating bottle also needs to be replenished with water and a new pressure adjustment. There is overflow during the pressure adjustment process, which affects the observation of the indoor environment. The biggest problem is that the process of water replenishment and pressure adjustment is cumbersome. The process of water replenishment and adjustment is relatively long. In large-scale observation room groups, repeated frequent operations are required, and a large number of personnel are required to operate, which brings a lot of manual errors. Recording the water supply and discharge according to the water level scale still requires a lot of manual operation, which seriously affects the progress of routine observation and scientific research. In the case of imperfect management mechanism, the lack of timely replenishment of water and observation records, human operation Errors and consistency errors will affect the development of various tasks

Images