Brief description of agricultural IoT smart irrigation and fertilization control system

The Agricultural IoT Smart Irrigation and Fertilizer Control System is an agricultural production environment monitoring system developed for realizing modern intelligent monitoring and fine control of agriculture. It is a key component of modern facility agriculture. In countries such as Israel, the Netherlands, and France, where modern agriculture is developed, irrigation and fertilization almost exclusively use intelligent equipment for precise control. Water saving, fertilizer saving, labor saving, production increase, and shelf life are very significant.

At present, China is in the initial stage of transition from traditional agriculture to modern agricultural automatic monitoring systems. With the continuous development of the economy and the continuous transformation of facilities agriculture from one household to large-scale planting, the demand for this type of equipment is increasing. Therefore, in today's environment of intelligent Internet of Things, agricultural intelligent network irrigation and fertigation control system technology must develop rapidly. After rapid development of this technology, it can well solve the technical problems of irrigation and fertilization that rely on imports. This technology can be applied to the production of vegetables, flowers, fruit trees and other crops in greenhouses, which can promote the development of China's Internet of Things smart agriculture.

1. The composition of the Intelligent Internet Irrigation and Fertilizer Control System:

The intelligent monitoring system for irrigation and fertilization consists of the central control computer, the system's first device, field solenoid valves and control cables, and the drip irrigation pipe network system. The center control computer adopts touch screen and PLC system first equipment: including pressure pump, fertilizing pump, filter, flow meter, water-fertilizer automatic mixing system, PH-EC monitor, pump constant pressure variable frequency control cabinet. Field solenoid valve and control cable: Solenoid valve adopts AC24V plastic solenoid valve, control cable adopts armored buried control cable.

2. Functions of the Intelligent Irrigation and Fertilizer Control System of Agricultural Internet of Things:

(1) Manual/Automatic Control Function:

Users can use these two methods to control irrigation and fertilization. When the automatic system fails, a manual system can be used to control, increasing the flexibility of the system control.

(2) constant pressure variable frequency control function of the water pump:

The constant pressure variable frequency control of the water pump provides a constant pipe network pressure for the system, so that the pressure of the pipe network does not change with the number of open field valves, so as to ensure the safe and reliable water supply of the system.

(3) Artificial control of irrigation fertilization function:

According to the user's set of different crops of different crop irrigation fertilization, can achieve a single multi-valve automatic irrigation and fertigation control.

(4) Regular quantitative irrigation and fertilization functions:

According to the user set different crops of different irrigation fertilization of the valve, irrigation start time, irrigation end time, irrigation cycle and so on. The system can realize automatic irrigation and fertilization control of multiple valves within one month.

(5) Condition control irrigation fertilization function:

Soil water potential sensors were used to monitor the soil moisture content for automatic irrigation and fertigation control. When the soil water potential reaches the upper limit of the set water potential. The computer automatically starts the system for fertilizing irrigation. When the lower limit of the set water potential is reached, irrigation and fertilization stop. The computer automatically records the amount of irrigation water in the valve, and the other valves are used to perform the irrigation and fertilizer in turn. This control method can realize unattended irrigation and fertilization control of multiple valves.

(6) Intelligent compound fertilizer function:

Through data monitoring, based on pH and concentration EC of the nutrient solution needed for crop growth, the computer follows the pH and EC settings of the fertilizer formulation and combines 1-4 kinds of mother liquor and 100% of the 5% concentrated H2SO solution. The water is automatically mixed and formulated to adjust the pH and EC of the nutrient solution to the extent necessary for the normal growth of the crop to meet the growth requirements of the crop.

(7) Statistics, query and display functions of irrigation and fertility information:

The system can record the daily amount of irrigation fertilization and irrigation fertilization for each individual valve of each crop, and can continuously store the record information.

(8) Dynamic display function of system operation:

When the system is running, the main interface of the system displays the current running program and the running valve, so that the user can grasp the system running status at a glance.

(9) System security protection function:

When the user is not properly set up and the system has an abnormal situation, the computer will promptly issue an audible and visual alarm to remind the user to intervene. Prevent greater damage to the system or crops.

3, The main features of the agricultural IoT intelligent irrigation and fertilization control system:

(1) powerful. Easy to operate:

With manual intervention, regular ration, condition control, irrigation and fertilization, etc., the user can choose according to the actual situation. At the same time the system also has a filter backwash, information query, security protection and other functions.

(2) high system hardware configuration, stable performance, high cost performance:

System control hardware generally uses PLC and touch screen. Actuators generally use imported solenoid valves and water pumps to ensure the reliability and stability of the system.

(3) Save water, save fertilizer, save labor, reduce labor intensity, and improve automation management;

(4) Strong practicality. Wide range of applications:

Can be widely used in vegetables, flowers, fruit trees, edible fungi, irrigation and fertility management, has a strong commonality.

(5) High control accuracy.

The agricultural IoT smart irrigation and fertilization control system is mainly used for daily irrigation control and management in fields such as farmland, gardens, and facility agriculture. Through modern scientific and technological means, it can reduce labor costs, increase automation production efficiency, and save water resources.