| Autor: |
Zhao, Jinpeng, Yu, Yingduo, Li, Zhao |
| Zdroj: |
International Journal of Information Technology; 20230101, Issue: Preprints p1-11, 11p |
| Abstrakt: |
An automatic drip irrigation system (ADIS) based on the LoRa protocol was developed and then evaluated in a corn field. The system is composed of an irrigation cloud platform, a base station, wireless nodes, soil moisture sensors and solenoid valves. The system was installed in a corn field and tested for the maximum communication distance during the sowing stage without a canopy. In addition, the wireless node power consumption and communication stability of the system on different corn growth stages were also tested. The data collected from the cornfield showed that maximum stable communication distance between the base station and the nodes was up to 1300 m at sowing stage without canopy obstructions. Although the average packet loss rate was about 10% at a distance of 1000 m when the maximum of crop’s leaf area index was reached at corn mature stage, the automatic drip system still could run successfully by means of three retransmissions in signal management. Besides, with a polling period of longer than 10 min, the lifetime of valve control node which was powered by a 6000 mA·h lithium battery could cover whole growth period of corn. In conclusion, the comprehensive irrigation performance of the ADIS reveals that the developed automatic drip irrigation system based on soil moisture feedback can meet the irrigation control requirements and irrigate the corn periodically with the appropriate amount. |
| Databáze: |
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