Abstract

Abstract: This paper proposes a practical, low-cost circuit for the operation and control of a final control element (valve).The circuit presented in the paper uses an Infrared (IR) proximity sensor for object detection for triggering and 555 timerIC for precise time monitoring. The proposed system is intended to be used in soap and sanitizer dispensers installed atpublic places in this case in the university premises to assess the effectiveness. It may be proved very effective in mitigatingthe risk of the spread of Covid- 19 due to the soap and sanitizer dispensers used at public places and the time monitoringcapability of the proposed design allows the end-user to ensure the World Health Organization (WHO) guidelines for handhygiene. Finally, theoretical concepts are validated using experimental results presented in the paper.KEYWORDS Infrared (IR) sensor module, 555 monostable multivibrator, DC relay module, Final Control Element (FCE)