International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023
p-ISSN: 2395-0072
www.irjet.net
Automatic Hand Sanitizer Using Ultrasonic Sensor P Annapurna1, K Sai Pragna2, D Saketh Reddy3, M Sudheer Kumar4 Assistant Professor, Institute of Aeronautical Engineering, Hyderabad, Telangana. Student of Electronics and Communication Engineering, Institute of Aeronautical Engineering, Hyderabad, Telangana. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - since 2019 due to the global spread of COVID
Key Words: Arduino, Mist Maker, LCD Display, Ultrasonic Sensor, UV Lamp, Microcontroller, sanitization
to be solved. Using the liquid form of sanitizer leads to lots of sanitizer wastage and we are not sure about the proper disinfection of our hands. To solve this problem, our machine goes a step forward saving the sanitizer using a fog-based system and assuring more safety. The main controlling device of the system is the ARDUINO microcontroller. UV lamp, timer buttons, LCD display, mist maker, and SR04 ultrasonic sensor are interfaced with the microcontroller. In this system, the user needs to set the time using the timer buttons and insert his/her hands into the machine, as soon as the ultrasonic sensor detects the hands automatically turns on the UV lamp and switches on the mist makers to dispense the sanitizer fog and the status of the process is displayed on the LCD display. The system gives the audio alert when the person removes the hands from the system displaying process is not yet finished. After the completion of the process for the provided time, it displays completed on LCD.
1. INTRODUCTION
2. HISTORY
Since the start of the COVID-19 pandemic in 2019, everyone is suggested to clean their hands very frequently to reduce the spread of the disease. People can contract the COVID-19 virus by breathing in polluted air that contains the virus's aerosols, droplets, and minute airborne particles. These particles are exhaled by infected individuals while they breathe, speak, cough, sneeze, or sing. Additionally, the COVID-19 virus can be propagated by direct physical contact with surfaces.. To reduce the spread of the virus through droplets and airborne particles masks are used and to reduce the spread of the virus through contact with surfaces we need to regularly wash our hands to kill the virus. But a problem arises here with washing hands frequently that is we can’t wash our hands neatly wherever we want. When we wash our hands with soap and water only 10-30% of water touches our skin and the rest flows down. Also, some soaps may not properly disinfect your hands. This might lead to lots of water wastage, which can start another pandemic“Water Scarcity”. To solve this problem, “sanitizer” has come into the scene. Sanitizer is a liquid, foam, or gel generally used to kill many viruses/bacteria/microorganisms. Sanitizer helps kill germs up to 99% on the applied surface. So, sanitizer is the most efficient way to clean hands safely.
Hand sanitization has become a part of human day-to-day activity after once everyone faced covid. It all began in December 2019. When the covid wave started everyone understood the importance of sanitization and cleanliness. Sanitization has become a part of human life. It also played a major role against covid virus. In order to promote safety and sanitization the sale of sanitizers has increased worldwide.
Washing hands regularly with alcohol-based hand sanitizer or soap and water every day to prevent infection and disease has become mandatory. However, it is easier to use alcohol-based hand sanitizer. But automatic disinfection dispensers are extremely user-friendly as they work without touching and 100% safe to use. Generally, automatic hand sanitizer uses ultrasonic or infrared sensors to detect the hand. When we turn on the sanitizer dispenser only 10-30%of the sanitizer or water actually touches our skin, the rest flows through the first layer of the water. Our system takes it to the next level by using a fog dispenser to make it more efficient. The main controller of the project is an ARDUINO microcontroller, SR04 Ultrasonic sensor, timer buttons, LCD display, mist maker, and UV Lamp. The UV lamp gives more efficiency in sanitizing.
2.1 PUMP BOTTLE DISPENSER The first mode of sanitization was using a pump bottle dispenser. The image of the pump bottle dispenser is shown in Fig 1. In this method, when the person applies force and presses the pump, the sanitizer is released from the nozzle. In
Disinfecting our hands properly and frequently is very important to fight against the pandemic using the methods efficiently. In using sanitizer, there are also some problems
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Fig 1: Pump Bottle Dispenser
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