Background:

Soil moisture sensor (SHS) is an important sensor in environmental monitoring and agricultural engineering. It is widely used in agriculture, forestry, aquaculture and other industries to measure the relative humidity (RH) and temperature of soil, water and air. SHSs typically rely on electrodes and some form of feedback mechanism to measure the electrical properties of the soil and surrounding air. In this article, we will introduce the fundamentals of SHSs and how they work, discuss their advantages and disadvantages, and discuss future trends and development of soil moisture sensor SHSs.

The basic principle of soil moisture sensor

Soil moisture detector is mainly divided into volume type and electrode type two. Lumps of SHS consist of water-filled or salt-filled solid elements, such as lithium niobate (LiNbO3), that are exposed directly to the soil. Changes in solid element resistance caused by changes in soil moisture content can be used to measure soil RH.

Electrode type SHS uses electrodes formed on the surface of solid state components such as lithium niobate (LiNbO3) as sensing elements. The change of soil moisture content causes the change of electrode potential, which can be used to measure soil RH.

Advantages and disadvantages of soil moisture sensor

Compared with other environmental sensors, soil moisture sensors have the advantages of simple structure, low cost, high precision and good long-term stability. Soil moisture sensors can be used to monitor soil moisture and RH content, providing effective measures for reducing natural disasters, optimizing irrigation and agricultural production, and ensuring food safety.

However, soil moisture testers also have some drawbacks. First, they require certain operating conditions. For example, the soil and surrounding air must be in a certain state for the soil moisture sensor to work properly. Soil moisture sensors may not work properly if soil or air conditions are unstable. Secondly, the soil moisture sensor has a certain dependence on environmental factors such as temperature and humidity. If the operating conditions are different, the soil moisture sensor may not work properly. Finally, soil moisture sensors are affected by environmental changes, such as pollution and climate change. These environmental changes may affect the accuracy of soil moisture sensors.

Future trend and development of soil moisture sensor

In recent years, the development of soil moisture sensors has been accelerated. In the future, SHSs may be applied to more fields and industries, such as environmental monitoring, agriculture, energy, etc.

First, soil moisture sensors can be used for environmental monitoring. With the continuous improvement of environmental monitoring technology, soil moisture sensors can be used to monitor the air and soil conditions in various environments. SHSs can also be used to monitor water quality in rivers and lakes.

Second, SHSs can be applied to agriculture. Soil moisture sensors can be used to monitor soil moisture content and crop RH content. Monitoring results can be used to adjust irrigation and agricultural production in a timely manner.

Third, SHSs can be applied to the energy sector. Soil moisture sensors can be used to monitor moisture and temperature in gas Wells. The monitoring results can be used to control gas production in time.

Finally, SHSs can be applied to other industries. Soil moisture sensors can be used to monitor environmental conditions in factories and power plants. The monitoring results can be used to optimize operating conditions and reduce environmental pollution.

In short, soil moisture sensors have a number of advantages over other environmental sensors. With the continuous development of environmental monitoring technology, soil moisture sensors can be applied to more fields and industries, and will play an increasingly important role in environmental monitoring, agriculture, energy and other industries.