A continuous water-level sensor based on load cell and floating pipe

Nowadays, the water level is of paramount importance to modern societies. The existing liquid-level-sensing techniques of monitoring systems have been widely used in various fields. The ultrasonic gauge and radar gauge have been adopted to replace the float gauge and pressure gauge in previous equipment. However, the water level warning system should be able to have stability, high resolution, and low cost. Hence, this paper presents the design of a prototype simple system, which has a water level sensor incorporated with a load cell and a floating body to provide an accurate water level measurement system. Our proposed system easily yields a 1-mm level resolution. Moreover, when the cumulative rainfall exceeds the threshold water level, remote users will receive a warning notification. In the future, the design with the early warning messages for people before the flood potentially gives people more time to evacuate from the flood.