ABSTRACT
Ultraviolet (UV) light radiation is very dangerous as it can irritate human skin and eyes in which long and direct exposure can lead to skin and eyes cancer. However, Ultraviolet C (UVC) light with a wavelength between 207nm-222nm could sanitize in which inactivate the bacteria such as superbug (the pathogen that already built immunity against chemical sanitizer) and contribute to the fight against Covid-19 viruses. Therefore, this development of UV sanitizer is to sanitize surface area effectively with a human alert system in which will activate the buzzer, turn off the UV light and stop moving when human motion is detected. The notification also will be sent to the user whenever a human motion is detected as a 360° sanitization area to inactivate pathogens. The precaution to avoid any accident. The device is equipped with one UVC light which provides, the body has ultrasonic sensors to detect obstacles and provide autonomous movement to the device while the PIR sensor is used to detect human motion and activate the human alert system. As the result, the UVC light effectiveness is determined based on the bacteria growth in the petri dish. After the sanitization process, the bacteria are significantly reduced and killed effectively in low areas such as floors but reduce their efficiency to the high area. Thus, this device is time efficient and able to reduce the cost of sanitization compared to chemical sanitizer. © 2022 IEEE.
ABSTRACT
One of the factors that contributes to the increased number of Covid-19 cases in Malaysia is according to the authorities that Covid-19 patients, persons under investigation (PUI) and persons under surveillance (PUS) had deliberately left their home quarantine without valid reason and permission. There were irresponsible people who act selfishly by cutting their quarantine wrist tags provided by the Ministry of Health (MOH) and casually left their quarantine zone. The authorities are having a hard time to track down these irresponsible people especially among those who are ordered for self-quarantined at homes. These challenges had inspired for this work to propose a monitoring system to notify and remind respective individuals if they left the permissible area. The developed system could also update the authorities when these individuals continuously defy orders to return to their quarantine area. Through prototype testing, the proposed system offers an acceptable battery consumption since its tracking device consumed an average 150 mAh for a whole day operation. It is anticipated that this system could be an effective technology tool to ensure the quarantine session is undergone perfectly by these individuals and thus, combating the spread of deadly Covid-19 virus in the country. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.