LoRaWAN (Long Range Wide Area Network) communication smart valves have extensive and significant applications in agricultural irrigation, mainly reflected in the following aspects:
Enabling Precision Irrigation: Based on real-time monitored environmental factors (e.g., temperature, humidity, light intensity) in farmlands or greenhouses, and soil conditions (e.g., soil moisture, pH value), combined with the physiological and ecological characteristics of crops, LoRaWAN communication smart valves can accurately determine the optimal irrigation timing. Via LoRa wireless transmission technology, the smart valves receive instructions from gateways to precisely control valve opening and closing, thereby adjusting irrigation volume accurately, reducing ineffective irrigation, and improving water use efficiency.
Remote Automated Control: Farmers can remotely and manually control smart valves through LoRaWAN networks via terminals such as mobile Apps or computer software. For instance, they can remotely set the valve’s start time, end time, and irrigation duration to achieve functions like automatic timed irrigation and cyclic irrigation. They can also switch between remote manual and automatic control, enabling convenient irrigation system management without on-site presence, which greatly enhances the convenience of irrigation management.
Flexible Networking and Large-Scale Deployment: LoRa technology features long transmission distance, low power consumption, and strong anti-interference capability, ensuring stable wireless communication in complex farmland environments. A single LoRa gateway can support multiple smart valve nodes, enabling easy capacity expansion and coverage of thousands of mu (a Chinese unit of area, 1 mu ≈ 0.0667 hectares) of land, which is suitable for networking needs of large-scale farmland irrigation systems. For example, the SC-KZJD series of LoRaWAN wireless irrigation nodes (used in Shechuan area) are easy to install—simply connect sensors or solenoid valves to the nodes and ensure they are within the gateway coverage.
Cost Reduction and Maintenance Simplification: LoRaWAN communication smart valves are usually powered by lithium batteries and operate with low power consumption. There is no need to lay a large number of cables, which reduces wiring costs and power supply difficulties. Meanwhile, their IP68 protection rating allows them to adapt to harsh outdoor environments, lowering maintenance costs. For example, the LoRa smart valves produced by Sixin adopt a high-efficiency battery power supply solution and remain in a deep sleep state normally to extend their service life, further reducing usage costs.
Intelligent Linkage and Data Analysis: Smart valves can achieve intelligent linkage with other smart irrigation equipment (e.g., weather stations, soil moisture sensors). Using edge computing functions, they can automatically adjust irrigation strategies based on real-time data. In addition, the system can analyze the collected data, automatically generate curves on the cloud platform for storage. Farmers can query the data in Excel format via mobile phones or computers, analyze and compare changes before and after irrigation, and thus formulate more reasonable irrigation strategies.
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