Abstract:
Flooding is still a problem in big cities in Indonesia, one way that can be done to
minimize the occurrence of floods that will come unexpectedly is to provide
information earlier before a flood occurs. The research being conducted this time,
“IoT Design of Website-Based Flood Early Warning Devices and Automatic Dam
Gate Controllers. The design of this Flood Detection System is an IoT project based
on the esp8266 microcontroller which is integrated with a web application and
mySQL database. The working principle of this system is that a sensor that is
installed perpendicularly at a certain height above the water level will emit
ultrasonic waves with a speed of 340 m/s in the air. The waves will then hit the
surface of the water and bounce back towards the sensor. In addition, the sluice at
the dam will also process an ultrasonic sensor which functions as a distance meter
when the water level reaches its highest point, and the servo motor as the sluice will
carry out the command to raise the sluice automatically and simultaneously with
the sound of a siren marking the water point. the characteristics of the HCSR-04
can detect flood water levels with an accuracy rate of 99.4% and servo motor 0.
when the position of the dam is in a state of danger. Tests in the lab show that the
system built can record water levels in real-time which can be monitored from the
monitoring website, , the error rate that occurs on the sensor is at least 0.5% so that
the performance of the equipment and system goes well.
