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Shandong Wanxiang Environmental Technology Co., Ltd
Automatic soil moisture monitoring system: intelligent perception of soil moisture, precise protection of irrigation
Date: 2025-12-23Read: 10
Irrigation is a key link in agricultural production, and the scientificity of irrigation directly depends on the precise grasp of soil moisture. Traditional irrigation relies heavily on empirical judgment, often resulting in problems such as "water shortage and drought" or "excessive watering", which not only affects crop growth but also causes water resource waste. The automatic soil moisture monitoring system takes "fully automatic monitoring, intelligent data transmission, and precise irrigation guidance" as its core advantages, realizing 24-hour continuous automatic monitoring of soil profile temperature, humidity, and conductivity, providing scientific data support for smart irrigation, and widely used in various irrigation projects, field planting, facility agriculture, and other fields of smart agriculture.
Fully automated operation, freeing up labor costs. The automatic soil moisture monitoring system operates without manual intervention throughout the entire process, from soil parameter collection, data processing to data transmission, achieving automated operation. The sensors installed in the system have a start-up time of only 60 seconds and can quickly enter a stable monitoring state after being powered on. They continuously capture the dynamic changes in soil profile temperature, humidity, and conductivity for 24 hours. Compared to traditional manual sampling and measurement, it not only eliminates the complexity and lag of manual operation, but also avoids subjective errors in manual measurement, making soil moisture data more objective and real-time. The sensor adopts a low-power design, with a power consumption as low as 0.26W. It is equipped with an 8W solar power supply system and a 5000mAh built-in lithium battery, which can operate stably for a long time in outdoor scenarios without mains power coverage, and is suitable for long-term monitoring needs in various agricultural planting environments.
Accurate measurement technology ensures reliable data. The core sensor of the system adopts the measurement principle, establishes a mathematical model by monitoring the soil dielectric constant, and combines it with a self-designed spiral measuring electrode to effectively improve the contact effect between the sensor and the soil, reducing measurement errors caused by air gaps. At the same time, sensors can measure the average humidity within a certain area, which makes up for the limitations of traditional single point measurement and enables monitoring data to better reflect the true soil moisture conditions in the field. Each layer of the sensor can independently measure temperature, humidity, and conductivity parameters. The standard configuration supports 5-layer monitoring, and below 10 layers can be customized according to crop needs, accurately matching the monitoring requirements of different crop root depths - such as shallow soil monitoring for leafy vegetables and deep soil monitoring for fruit trees.
Stable transmission adaptation, convenient control of soil moisture. The system adopts the 485 Modbus RTU communication protocol, which ensures stable and reliable data transmission. It can transmit the monitored soil moisture data in real time to the backend management platform. Farmers can remotely view real-time data and historical change curves through terminals such as computers and mobile phones, and intuitively grasp the dynamic trend of soil moisture without the need to personally visit the field, greatly improving management efficiency. The sensor housing is made of imported PC material, which has high strength, corrosion resistance, and no pollution to the soil environment. The waterproof level reaches IP67 and can withstand harsh environments such as field rainwater immersion, high temperature exposure, moisture and mold, ensuring long-term stable operation of the equipment. The equipment installation is convenient, and deployment can be completed according to the instructions without the need for professional technical personnel.
Scientific guidance for irrigation to achieve quality and efficiency improvement. The core value of the automatic soil moisture monitoring system lies in providing scientific basis for precise irrigation and helping growers achieve "on-demand irrigation". By monitoring soil moisture data in real-time, growers can accurately determine the water shortage status of crops, avoiding water resource waste and soil compaction caused by blind irrigation; Combined with soil conductivity data, it can also assist in determining soil fertility status and provide reference for scientific fertilization. Attention should be paid to the use of the system. When multiple sensors are working simultaneously, they should be spaced at least 3 meters apart. Within a radius of 3 meters of the monitoring area, avoid electromagnetic cables and strong magnetic radiation to prevent measurement errors or equipment damage. In the application of a corn field planting base, the system accurately monitors soil moisture and guides growers to irrigate scientifically. It not only saves 30% of water resources, but also increases corn yield by 12%, achieving the dual goals of water conservation and yield increase.