LANDSLIDES EARLY WARNING SYSTEM WITH GSM MODEM BASED ON MICROCONTROLLER USING RAIN, SOIL SHIFT AND ACCELEROMETER SENSORS

Abstract

Landslide is triggered by several things, including rainfall that moves soil easily. Padang, West Sumatera is an area in Indonesia that has dangerous hills and slopes. This research aims to build landslide early warning system with parameters as follows: rainfall, soil-shifting, and vibration. In order to detect those three parameters, rain, soil-shifting and accelerometer sensors were used. In the data process, microcontroller ATMega 2560 was utilized. There are several warnings identified. First, “Alert” warning is happened when the slope is 40o and the rain sensor reaches 70%, or 50o slope with 68% rain sensor, and when the slope is 60o, the rain sensor moves to 58%. Secondly, “dangerous” warning occurs when the soilshifting sensor has moved 3 cm from its initial position. The output used in this research is a text-message, bell in audio form, and LCD to read the sensor values. The test result of this tool was successfully sent to observers when the soil changes.