Water level monitoring using ultrasonic-pipe in open channel

The authors proposed a method for measuring the water level in open channel which is accurate, low cost, and simple. Getting the accurate measurement in open channel is more difficult than in closed channel because there is an influence of external factors such as the formation of the wave, irregular channel structures and floating objects on the water surface. To resolve those problems, a new sensor device is proposed that can measure the water level accurately and simply. The device consists of a combination of JSN-SR04T ultrasonic sensors and iron pipe, it is developed by using ATMEGA328 microcontroller system. The device can measure the water level changes accurately because in a state of stationary and flat. The comparison result between measuring visually and JSN-SR04T ultrasonic sensor is included. This device can record the results of sensor measurements in every second into the SD-card for the purpose of further analysis.