Abstract:
The quality of Salt is an important aspect for human health growth and economic development.
The deficiency of quality salt concentration has become a challenge in recent years in Zanzibar.
The production of sodium chloride salt from the seawater normally has the minimum level of
sodium chloride concentration of about 85 to 90% in dry base, which is below of national and
international standards requirements (97-100%). This study uses an Internet of Things (IoT) to
reduce this challenge as a real-time technology to measure and infer the salt parameters. The
aim of the study is to design and prototype an IoT based system using fuzzy logic approach for
measuring sodium chloride salt quality. The system was designed and it includes with electrical
conductivity, total dissolved solids, pH and temperature sensors, Arduino Uno microcontroller,
GSM device, LCD screen display and ThingSpeak cloud server. The three samples of sodium
chloride solution of 5000mg/L were prepared by using distilled water. The fuzzy logic approach
was used to analyse the data collected from sensors and transmitted to the cloud server for
process and analysis to get the output results. The study results help to estimate the sodium
chloride salt concentration and its salt quality. The implementation of the proposed solution was
expected to measure and estimate the quality of sodium chloride salt, sending email notification
and to help users on decision-making. Therefore, the use of IoT technology would be helpful
for measuring of salt quality.
