FLOOD LEVEL MONITORS USING LORA COMMUNICATION BASED ON MICROCONTROLLER ESP3

This study aims to make equipment to determine the height of the flood, when conventional communications such as telephone networks and cellular operator networks cannot function. This happens because the network hardware is submerged in water or because the power supply from the PLN has been cut off. LoRa (Long Range Radio) provides low power consumption, low data rate and guaranteed data transmission security. With a small power supply, LoRa is very suitable to be used to monitor flood height by being integrated into the ESP32 microcontroller. Flood height data is sent regularly so that all stakeholders know the flood conditions in the field in real time.

In some areas which are flooded, some monitoring equipment will be installed. Flood height sensor used in the form of SRF05 module is a distance measuring sensor with an ultrasonic wave transmitter. The length of time from the SRF05 output will be converted to water level (flood) by the ESP32 microcontroller. This monitor equipment is equipped with RTC DS1307 module as a real time source which is authentic time on earth. Data of flood height and time of occurrence will be sent through the LoRa module to the receiver side ESP32. The receiver side ESP32 will be equipped with a web so that the data and time of this flood height can be accessed from android mobile by many stakeholders. On an Android mobile device software is installed online with a Thankable device. For data that can be accessed by an android device, the Firebase database is also provided. On the sending side the ESP32 will be equipped with an LCD display so that the height and time data can be seen directly. This equipment's power supply comes from a 12 Volt battery that can be refilled.

In this research, ESP32 microcontroller controlled equipment and LoRa transmission will be realized so that the equipment uses small amounts of energy that are suitable for use in disaster areas. In flood areas, humanitarian assistance and infrastructure improvements that are of an emergency nature are needed. For this the equipment is made portable and small in size. Information from the flood area will be sent automatically when this equipment starts to send data when the flood height reaches a certain value.