Precise agronomic control system and method for automatic fertilization and water supply using distributed control

Abstract

The invention discloses a precision agronomic control system and method for automatic fertilization and water supply using distributed control. The system includes a plurality of field subsystems, irrigation execution subsystems, and upper monitoring subsystems; each field subsystem communicates with the irrigation execution subsystem through a communication bus. The subsystems are connected to send irrigation requirements to the irrigation execution subsystem; the field subsystem is connected to the upper monitoring subsystem through the communication bus to transmit the working status of the field subsystem; the field subsystem is mainly composed of the field control computer and the temperature sensor connected to it, shallow Layer soil moisture sensors, deep soil moisture sensors, ion concentration sensors, and weather stations; the irrigation execution subsystem is mainly composed of irrigation control computers and connected water pumps, filtering equipment, fertilizer dispensers, and flow monitoring equipment; connected to a field irrigation After the irrigation demand issued by the subsystem, quantitative watering or fertilization is carried out according to the demand. The invention has higher flexibility, higher operation reliability and higher work efficiency.

Description

technical field [0001] The invention belongs to the technical field of automatic control of agricultural water and fertilizer, and specifically relates to a precise agronomic control system and method for automatic fertilization and water supply using distributed control. Background technique [0002] With the development of automatic control technology and detection technology, the level of agricultural automation has been continuously improved, and a number of semi-automatic and automatic water and fertilizer management systems have emerged, which has greatly improved the level of agricultural production. [0003] However, the following problems also occurred in actual use: [0004] 1. The detection probe of the water and fertilizer management system is buried in the field, and the detection parameter value in the field is fed back to the central control computer through the cable. Since the field detection probe outputs almost all weak analog signals, long-distance transm...

AI Technical Summary

Problems solved by technology

[0004] 1. The detection probe of the water and fertilizer management system is buried in the field, and the detection parameter value in the field is fed back to the central control computer through the cable. Since the field detection probe outputs almost all weak analog signals, long-distance transmission and temperature changes All will cause the signal to drift, which will have a direct impact on the decision-making and judgment of the central computer. Therefore, it is necessary to frequently calibrate the field sensors, which is not only time-consuming and laborious, but also affects the accuracy and reliability of the entire system;

[0005] 2. The control parameters and calculation formulas of the entire system are completely in the central computer, which increases the storage and calculation capacity of the central computer. Once the central computer fails, the entire system will be completely paralyzed, which will have irreparable effects during the critical period of crop growth. ;

[0006] 3. The scalability of the whole system is limited by the input and output points of the central computer hardware

Images