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是为实现现代农业智能化监测、精细化控制而研发的关于物联网的农业生产环境监控系统，它是现代设施农业的关键组成部分。 The Agricultural IOT Intelligent Irrigation and Fertilization Control System is an agricultural production environment monitoring system for the Internet of Things , which is developed for the realization of modern agricultural intelligent monitoring and refined control. It is a key component of modern facility agriculture . In countries such as Israel, the Netherlands, and France, where modern agriculture is developed, almost all intelligent irrigation equipment is used for precise control of irrigation and fertilization. Water-saving, fertilizer-saving, labor-saving, production increase, and quality preservation effects are very significant.
At present, China is in the initial stage of transition from traditional agriculture to modern agricultural automatic monitoring system. With the continuous development of economy and the continuous transformation of facility agriculture from one household to large-scale planting, the market demand for such equipment is increasing. Therefore, in today's environment of intelligent agriculture of the Internet of Things, the intelligent irrigation and fertilization control system technology of the agricultural Internet of Things must be developed rapidly. After the rapid development of this technology, it can solve the technical problems that rely on imports for irrigation and fertilization And, applying this technology to the production of vegetables , flowers, fruit trees and other crops in greenhouses can accelerate the development of China's IoT smart agriculture .
1. Components of the intelligent irrigation and fertilization control system for the agricultural Internet of Things :
The intelligent monitoring system for irrigation and fertilization is composed of a central control computer, the system's first device, field solenoid valves and control cables, and a drip irrigation pipe network system. The central control computer uses a touch screen and the first device of the PLC system: including a pressure pump, a fertilizing pump, a filter, a flow meter, an automatic water and fertilizer mixing system, a PH-EC monitor, and a constant-voltage inverter control cabinet for the pump. Field solenoid valve and control cable: The solenoid valve is an AC24V plastic solenoid valve, and the control cable is an armored buried control cable.
2. Functions of Intelligent Irrigation and Fertilization Control System for Agricultural Internet of Things:
(1) Manual / automatic control function:
Users can use these two methods for irrigation and fertilization control. When the automatic system fails, a manual system can be used for control, which increases the flexibility of system control.
(2) Constant pressure frequency conversion control function of water pump:
The constant pressure variable frequency control of the pump provides the system with a constant pipe network pressure, so that the pipe network pressure does not change with the number of open field valves, ensuring the system's safe and reliable water supply.
(3) Function of artificially controlling irrigation and fertilization:
According to the irrigation and fertilization amount of multiple valves set by users for different crops, automatic irrigation and fertilization control of multiple valves at one time can be realized.
(4) Timing and quantitative irrigation and fertilization function:
According to the user's setting of different crops, the irrigation fertilization amount, irrigation start time, irrigation end time, irrigation cycle, etc. The system can realize automatic irrigation and fertilization control of multiple valves in one month.
(5) Condition-controlled irrigation and fertilization function:
The soil water potential sensor is used to monitor the water content of the soil for automatic irrigation and fertilization control. When the soil water potential reaches the upper limit of the set water potential. The computer automatically starts the system to fertilize and irrigate. When the lower limit of the set water potential is reached, the fertilization is stopped. The computer automatically records the irrigation amount of this valve, and other valves are sequentially performed according to this irrigation fertilization amount. This control method can realize the unattended irrigation and fertilization control of multiple valves.
(6) Intelligent fertilizer mixing function:
Through data monitoring, according to the pH and concentration EC of the nutrient solution required for crop growth, the computer will concentrate 1-4 kinds of mother liquor 100 times concentrated, 1 kind of 5% concentration H2SO solution and Water is automatically mixed and formulated to adjust the pH and EC of the nutrient solution to the range required for normal growth of the crop to meet the growth requirements of the crop.
(7) Statistics, query and display functions of irrigation and fertilization information:
The system can record the daily fertilization amount and fertilization times of a single valve of each crop, and can continuously store the recorded information.
(8) Dynamic display function of system operation:
When the system is running, the main interface of the system displays the currently running programs and running valves, so that users can grasp the system running status at a glance.
(9) Security protection function of the system:
When the user makes improper settings and the system has an abnormal situation, the computer will issue an audible and visual alarm in time to remind the user to intervene in the processing. Prevent greater harm to the system or crop.
3. The main characteristics of the intelligent control system for agricultural IoT intelligent irrigation and fertilization:
(1) Powerful. Easy operation:
With manual intervention, timing and quantitative, condition control, irrigation and fertilization control methods, users can choose according to actual conditions. At the same time, the system also has functions such as filter backwash, information query, and security protection.
(2) High system hardware configuration, stable performance and high cost performance:
The control hardware of the system generally adopts PLC and touch screen, and the actuator generally adopts imported solenoid valves and water pumps to ensure the reliability and stability of the system.
(3) Save water, fertilizer, labor, reduce labor intensity, and improve the level of automated management;
(4) Strong practicality. Wide range of applications:
It can be widely used in the irrigation and fertilization management of vegetables, flowers, fruit trees, and edible fungi, and has strong versatility.
(5) High control accuracy.
The Agricultural IOT Intelligent 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 achieves the goals of reducing labor costs, improving automated production efficiency, and saving water resources.
March 17, 2017
Chengdu Xinxin Electronic Technology Co., Ltd. Editorial Department
Editor: Little Devil in Gourd