Circuit for early lightning warning alarm system

Abstract

Lightning is among the most deadly natural phenomena to mankind. This phenomenon is seen to increase globally as well as in Malaysia. Lightning does strike open areas such as playing fields and playgrounds and these areas are places people gather. Sensors that can detect the early occurrence of lightning have been developed for detecting approaching lightning activity in this project. The main objective is to provide early lightning warning system to the public and hence to reduce the number of fatalities due to lightning strike. The warning circuit was designed and simulated using Multism11. Basic operational method of the circuit is based on the comparative voltage method using LM339N integrated circuit comparator (IC). Light Emitting Diodes (LEDs) were used as indicators to indicate if the incoming voltage level is higher or lower than that of the safety level.