DEVELOPMENT AND CONSTRUCTION OF LIGHTENING DETECTING SYSTEM

Student: Ifeanyi Chizitelu Nweke
Supervisor: Dr E B Ettah
HOD: Dr Akong Egor
Department of Pure Physics
Physical Sciences
University of Cross River State, Calabar

Abstract

Lightning detectors are devices designed to detect the presence of lightning strikes. These detectors utilize various technologies to sense the electromagnetic signals like detecting of Radio Frequency (RF), Electric Field Change, Magnetic Field, Optical Detectors, as well as combined Systems. Most times, people love to stay in wide-open spaces. These places are definitely not the place to be if a thunderstorm is on the way. If there is a lightning strike nearby one could be in big danger of death or injury. if induction can kill, so can the voltage gradient across the ground in the vicinity of a lightning strike. being a device that detects lightning produced by thunderstorms, they do this by sensing the electromagnetic signal produced by the lightning discharge (Saviour et al., 2013). Many people do not realize how vulnerable electronic equipment can be in a thunderstorm, even if it is not close by. Service and repair technicians report a big surge in repair jobs after storms, and just about all of this could be avoided simply by switching off and removing power plugs from the wall socket. Those appliances especially at risk include microwave ovens, TV sets, satellite receivers, mains-powered computers (especially those also connected to the phone lines via a modem), washing machines and dryers. They should not be just switched off at the power point; but rather the mains plug should also be removed from the socket. TV antenna and satellite dish connections should be disconnected too. Many ovens incorporate electronic timers and power to these can be switched off at the ‘fuse’ box. Apart from mains-powered computers, devices that are particularly prone to damage are fax machines and cordless telephone base stations. It is the fact that they are connected to both the 230VAC mains and the telephone wiring that provides a double whammy. During a big thunderstorm, they should be disconnected both from the phone line and the mains power (Norinder, 1953).

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