Citation
Koh, Hong Keong @ Goh Hong Keong.
(2002)
The Development Of A Portable Fiber Optic Based Lightning Detector System.
Masters thesis, Universiti Putra Malaysia.
Abstract
This project is to demonstrate the development of a fiber optic based lightning
detector system using a programmable logic controller. Basically, the project is
developed to collect the lightning profiles. It is able to detect the lightning flash and
store the lightning data as well as the time of occurrences into a programmable logic
controller. It is capable of detecting the cloud to ground lightning, intercloud
lightning, intercloud lightning and others. The data could be retrieved and viewed
through the personal computer (PC) as desired.
Two sections are taken into consideration for the whole system design. These sections
are hardware and software design. The system hardware consists of 4 main parts.
They include a sensing unit, a data transmission unit, a signal conditioning unit and a
data storage unit. Most of the hardware involves circuitry designs. Based on the
designs, printed circuit boards (PCBs) are constructed by using the electronics
application software (PROTEL). On the other hand, the system software design is a program, which is written in ladder logic programming. The software is designed for
the purpose of handling and organizing the incoming lightning data into PLC or data
logger.
This project was tested in 2 modes. One of the modes is the testing of the individual
parts of the project. The other mode is the testing of the integration of all parts of the
project, which is including software and hardware system. In individual part testing,
each of the circuits was tested separately. The voltage is fed manually into the circuits
for testing their performance and functionality. The software design is tested without
integrating with the hardware system. In the integration testing, the hardware and the
software have been combined or integrated. The project is tested and justified under
the real condition of detecting lightning. Both of the testing has proven that the
invention is working properly and successfully.
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