Browsing by Author "De Silva, L.M.M."

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    Invention of Table Top Steam Sterilizer
    (Uva Wellassa University of Sri Lanka, 2019) Kumara, P.A.M.M.; De Silva, L.M.M.
    The sterilization is a process of making something free from harmful bacteria or other living microorganisms which is very important in healthcare industry. This research project was mainly focused on inventing cost effective, automated and efficient horizontal type table top steam sterilizer. The entire research project was launched in a very innovative way. As the initial step, physical structure was designed prioritizing on low cost materials and obeying the international standards. After that, electronic circuit was designed for both direct current (DC) power & alternative AC power to drive software and operate the hardware utilities respectively. The software system was created in Arduino platform. The system consists of two program cycles which are at 121 0C temperature 20 minutes and 134 0C temperature in 15 minutes. The real time temperature and pressure data were displayed in liquid crystal display (LCD) and manual pressure gauge respectively. Various safety precaution methods were included to the machine for both safety of operator and instrument. The unique features of this research project are availability of ultraviolet (UV) sterilization method in addition to steam sterilization method & message alert system that sends real time operation data such as door status, water level status, program cycle termination data and UV sterilization status provided for the operator’s mobile phone. The UV sterilization automatically turns ON when loading and unloading packages from the sterilizer. To check the performances of this machine, few sterilizing cycles were run and it was confirmed that expected outcomes have been fulfilled by this machine. It used to prevent environmental contamination during the period of unloading packages. This program cycles are fully automated and operator only has to push a single button. It will be a very user friendly, cost effective and versatile table top steam sterilizer for healthcare industry.