Development of IoT Underground Water Level Monitoring Based on LiDAR

This paper presents and designs a LiDAR sensor based integrated with IoT system for long-range underground water level measurement. This system has been used and verified on the actual experiment in the application of Alternate Wetting and Drying (AWD) where AWD is a water-saving irrigation method to reduce irrigation water consumption in rice fields. The results show that this system has high reliability and can measure the water level below the ground surface up to 5 meters.