Automatic Water Dispenser For Washing The Hands & Protection From Corona

In COVID-19 pandemic the development of prototype for the safety from communicative viruses has become increasingly important. Here a new prototype is proposed for time restricted automatic water pouring to wash the hands in addition to a indicator for 20 second restricted time period for hand rubbing from soap so as to protect from corona virus.

Lots of water is wasted due to improper use of pouring water. Generally people are not aware that 20 second restricted time period for washing the hands means we have to rub our hands from soap for 20 second and then wash it to clean. Generally people start the water tap continuously for the time they are doing hand washing so lots of water wasted and in India water saving is very essential. In our prototype due to smart dispensing of water we limit the wastage.

Continuously touching the water tap by different people is harmful as corona virus communicates via touching anything that already comes in touch with the infected person. So protection from corona virus at the water tap is necessary and in our prototype water will pour automatically so its protect us from retouching.

Main objective of this proposal is to protect ourselves from corona virus covid-19 in low Cost. It’s an easy project solution that can be use easily at our home, office etc.People can use our prototype framework at homes for protect themselves from corona and to save water

Working

Here in our proposed prototype whenever someone who want to wash his/her hands come in front of ultrasonic sensor at a distance greater than 0 meter and less than 0.6 meter than LED automatically start to indicate that he/she should rub their hands from soap for 20 second restricted time period as per the guidelines from WHO, than after 20 second the relay automatically drive the pump motor for 3 second to pour the water to wash the hands , than pump motor stop for 2 second to check the hands by individual(user) and again start to pour the water for 2 second and then stop so that if still soap remain in hands get washed completely .After it buzzer will start automatically for 3 second time period to indicate that washing of hands process is completed and now he/she can move or left the place.

Advantage

1. Full-fill the guidelines of WHO for 20 second restricted timePeriod for washing the hands to get rid of any virus.
2. Water safety as water pour out for a limited time period.
3. Easy to understand and easy to use at home/office.

   

Key Components

1. Ultrasonic Sensor (HC SR-04)

HC-SR04 is an ultrasonic distance sensor. There are two transducer in this sensor, one works as transmitter to convert the electrical signal into ultrasonic pulses and the other one work as a receiver to receive the transmitted pulses. When the receiver transducer receives it generate an output pulse such that the pulse width is directly proportional to the distance of the object whatever in front of ultrasonic sensor.

2. Arduino Uno

Arduino- Uno ATmega328P based microcontroller board. It contains 14 digital input/output pins ( in which 6 pins as PWM outputs),6 pins as analog inputs, one 16 MHz ceramic resonator ,USB connection, one power jack, one ICSP header and reset button. It has everything needed to assist the microcontroller. we can easily connect it to a computer with a USB cable or switch on it with a adapter or +9vbattery to get started.

Block Digram And Circuit Connection of Prototype

Bill of Material

Table 1:- List of components use in project (Bill of Material)

//rakesh Jain program
int const trigPin = 5;
int const echoPin = 6;
int const led = 7;
int const buzzer = 9;
int const base=4;
void setup()
{
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(led, OUTPUT);
pinMode(buzzer, OUTPUT);
pinMode(base, OUTPUT);
}
void loop()
{
int duration, distance;
digitalWrite(trigPin, HIGH);
delay(1);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / 29.1;
digitalWrite(base, LOW);
if (distance <= 60& distance >= 0) {
digitalWrite(led, HIGH);
digitalWrite(buzzer, LOW);
delay(20000);
digitalWrite(led, LOW);
digitalWrite(base, HIGH);
delay(3000);
digitalWrite(base, LOW);
delay(2000);
digitalWrite(base, HIGH);
delay(2000);
digitalWrite(base, LOW);
digitalWrite(buzzer, HIGH);
delay(3000);
digitalWrite(buzzer, LOW);
}
delay(30);
}

RAKESH JAIN received Master degree in VLSI, B.E. in electronics and communication, DIPLOMA in electronics. He is currently working as an Assistant professor in ECE department in Geetanjali institute of technical studies, Udaipur. His research area is SENSOR and Microcontroller. He has 22 copyright and 3 Indian patents.

RAHUL MOUD received Master degree in VLSI, B.E. in electronics and communication. He is currently working as an Assistant professor in ECE department & Dean Student affair in Geetanjali institute of technical studies, Udaipur. He has 3 copyright & His research area is Network theory and analysis.