The hardware system of the wireless sensor network used in soil moisture monitoring system is mainly composed of sensor nodes and gateways. The composition of sensor nodes can be divided into two parts: application independence and application-related. The former part of the soil moisture monitoring system is also called the processor. Platforms, including computing components, storage units, communication units, and power supply components; some include sensors, back-analog conversion (ADC) parts, and more.
The sensor is the basis and premise for data acquisition, and it is the basic unit of the wireless sensor network that constitutes the soil moisture monitoring system. Its main role is to collect the information of the monitoring area and complete the data conversion. Its accuracy and rationality monitor the entire system. The performance of the system has an important effect. For the selection of sensors for soil moisture monitoring systems, the principles of practicality, economy, standards, and durability should be followed.
Taking the moisture measurement sensor in the soil moisture monitoring system as an example, the design of the entire system and the design requirements for the energy saving of the sensor node are affected less by the temperature change, and the outer layer material of the sensor is less affected by salinity, which is convenient for burying With different soil depths and a high resolution of 0.002m3/m3, the soil moisture monitoring system can take a long time comprehensive measurement, and the specific output voltage is proportional to the soil moisture content.
The comparison of moisture measurement in soil moisture monitoring systems with other sensors shows that the moisture sensor has a lower voltage requirement and does not consume energy when it is not running. A supply of 2.5 volt volts can be used each time. One measurement of the sensor has a certain effect on the energy saving of the whole soil moisture monitoring system and also prolongs the use time.
The sensor is the basis and premise for data acquisition, and it is the basic unit of the wireless sensor network that constitutes the soil moisture monitoring system. Its main role is to collect the information of the monitoring area and complete the data conversion. Its accuracy and rationality monitor the entire system. The performance of the system has an important effect. For the selection of sensors for soil moisture monitoring systems, the principles of practicality, economy, standards, and durability should be followed.
Taking the moisture measurement sensor in the soil moisture monitoring system as an example, the design of the entire system and the design requirements for the energy saving of the sensor node are affected less by the temperature change, and the outer layer material of the sensor is less affected by salinity, which is convenient for burying With different soil depths and a high resolution of 0.002m3/m3, the soil moisture monitoring system can take a long time comprehensive measurement, and the specific output voltage is proportional to the soil moisture content.
The comparison of moisture measurement in soil moisture monitoring systems with other sensors shows that the moisture sensor has a lower voltage requirement and does not consume energy when it is not running. A supply of 2.5 volt volts can be used each time. One measurement of the sensor has a certain effect on the energy saving of the whole soil moisture monitoring system and also prolongs the use time.
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