Signal conditioning and computer interfacing for a low-cost portable fibre optic sensor (software and hardware development) / Mohd Bakhyar Ahmad

The main objective of this project is to design an interface of a low-cost portable optical fibre sensors measuring instrument with personal computer (PC). The measuring instrument has been designed to detect colour variation and measure physical displacement. The project uses a parallel printer port as an interface and Turbo C++ as a program language. The output from measuring instrument system is converted into digital by using Analogue to Digital Converter (ADC) and the result is manipulated into actual measurement (colour and displacement ) by software before display on computer screen. The resolution for displacement measurement is the focus of this study.