Evaluation Of Turbidity Measuring Using IoT Based Sensors
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Date
2022-07-24
Authors
Tay, Ying Keat
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Water serves many important roles in our daily life. Thus, it is essential to monitor
our water quality. IoT water quality monitoring system is one of the most popular method
to track the water quality as it offers real-time monitoring and accessibility of data through
cloud. To ensure the system delivers its function, the accuracy of the sensors is the key
element that we must focus on. In this study, the turbidity sensor measuring capability is
evaluated. Owing to new data attained, the formula provided by the manufacturer yielded
poor accuracy and a new voltage-turbidity conversion formula is needed. The turbidity
sensor will be tested with solution with known turbidity value and a new formula will be
derived. After that, the turbidity sensor with the new formulation will be put under various
turbidity measurements using oil emulsion, dye solution, protein emulsion, calcium
carbonate solution and pure water to validate its performance. Besides that, the repetitive
turbidity measurement on calcium carbonate solution and water is successfully carried out. Time-based turbidity measurement on calcium carbonate solution, oil emulsion, dye solution and protein
emulsion are carried out.