Majalaya is a low-lying area in the Bandung regency, large frequent rain that
falls in the highlands Bandung caused the overflow of river water in the Majalaya
area that lowland , so that causing flooding suppossed damage and good losses
materially or immaterially.
Along with technological advances today, for that it can be anticipated by relying on an early warning system so that it can minimize losses due to flooding. In
making an early tool warning system compatible sensors are needed. Therefore in
this final project an analysis is performed on several sensors by measuring how accurate the sensors are such sensors can provide water level information with several
media different and with several types of water. The sensors analyzed are ultrasonic
sensors type SRF-08, then lidar with type VL53L0X, and infrared sensor with type
SHARP GP2Y0A21YK. The results of this thesis research are to determine sensors
that are able to support an early warning flood system, so that of the three sensors
that have been analyzed, sensors that are able to measure, have a performance that
supportsthe early warning system of floods, and provide accurate information about
water levels in real- time wherever and whenever. The results of the final project for
each sensor in the experiments performed have varied results. Experiments carried
out on two clean and dirty water media were given different results, the highest
average accuracy value of the sensor in detecting water levels up to 2 meters was
SRF-08 up to 90
Keywords: Water level sensors, early warning system, SRF08, VL53L0X,
GP2Y0A21YK