Fiber optic sensor for soil humidity/moisture monitoring

Muhammad Yusri, Mohd Yusoff (2017) Fiber optic sensor for soil humidity/moisture monitoring. Project Report. UTeM, Melaka,Malaysia. (Submitted)

Text (24 Pages) Fiber optic sensor for soil humiditymoisture monitoring.pdf - Submitted Version Download (2MB)

Abstract

This project is about to monitor moisture in soils using fiber optic as a main component.The reason why fiber optic is used is because,the measurement for reading are immune from interference caused by surrounding electric or magnetic fields.So the measurements are more accurate.The basic concept of a fiber optic sensor is to detect a change in intensity of the light that travels inside the fiber.This changes can be induced either by allowing the light to escape the fiber,or by absorbing the light.The light is normally confined inside the core of the fiber by the cladding coating.So the effect only can happen when the cladding coating is remove.In this project phototransistor is used to detect the light in fiber optic.Other than that, Arduino nano is used to read the output data whereas optical connector is to send the light through the fiber optic.So,this project will be use five different sensor with different length and width which is the function of the sensor is to detect the level of soil moisture.All the sensor are being analyse to know which are the sensor are suitable for this project.If the sensor are suitable with this system,the output that generate by the receiver should be same with the theory.

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