What is ultraviolet? [3
What is germicidal ultraviolet? [3
What are the beneficial uses of germicidal ultraviolet? [3
Here are just a few of the applications… [3
How do ultraviolet purifiers work? [3
Our solution
Necessary things
Building the system
Demo
Reference

Team RoboticsBangladesh: Salah Uddin, IoT-Bangladesh

Published September 2, 2020 © LGPL

Helmet Sterilization Box

UV sterilization lamp based Helmet sterilization box is presented in this project.

IntermediateFull instructions provided24 hours5,474

First 25 Qualified Contest Entries

UV Robot Design Contest

Things used in this project

Hardware components

Arduino UNO

Main Controller Board

UV Sterilizer Germicidal Lamp LED

SparkFun Pushbutton switch 12mm

Seeed Studio Grove Buzzer

Seeed Studio Base Shield V2

MOSFET Transistor, Switching

uPVC Board

9V 1A Switching Wall Power Supply

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Hot glue gun (generic)

Soldering iron (generic)

Premium Female/Male Extension Jumper Wires, 40 x 6" (150mm)

Story

In this project, we have presented a disinfection system for disinfecting helmets. This system is based on ultra-violet sterilizer technology. This system is helpful for disinfecting helmets.

What is ultraviolet? [3]

Ultraviolet light is part of the light spectrum, which is classified into three wavelength ranges:

UV-C, from 100 nanometers (nm) to 280 nm
UV-B, from 280 nm to 315 nm
UV-A, from 315 nm to 400 nm

source: https://ultraviolet.com/what-is-germicidal-ultraviolet

What is germicidal ultraviolet? [3]

UV-C light is germicidal – i.e., it deactivates the DNA of bacteria, virus and other pathogens and thus destroys their ability to multiply and cause disease. Specifically, UV-C light causes damage to the nucleic acid of microorganisms by forming covalent bonds between certain adjacent bases in the DNA. The formation of such bonds prevent the DNA from being unzipped for replication, and the organism is unable to reproduce. In fact, when the organism tries to replicate, it dies.

source: https://ultraviolet.com/what-is-germicidal-ultraviolet/

What are the beneficial uses of germicidal ultraviolet? [3]

Ultraviolet technology is a non-chemical approach to disinfection. In this method of disinfection, nothing is added which makes this process simple, inexpensive and requires very low maintenance. Ultraviolet purifiers utilize germicidal lamps that are designed and calculated to produce a certain dosage of ultraviolet (usually at least 16, 000 microwatt seconds per square centimeter but many units actually have a much higher dosage.) The principle of design is based on a product of time and intensity – you must have a certain amount of both for a successful design.

Here are just a few of the applications… [3]

Drinking Water

under sink installs & water vending machines
boats & recreational vehicles
water wells & water cisterns
swimming pool & hot tubs
farms, ranches & trailer parks
schools & hotels
aquarium, hatcheries and nurseries
ice making

Food Processing

brewery & winery
soft drinks, fruit drinks and juices
bottling facilities
dairy processing
liquid sugars, sweeteners and edible oils
water based lubricants
pure wash water

Medical

pharmaceutical production
laboratories, hospitals and clinics
maternity labor and delivery areas
pathology labs, kidney dialysis
animal husbandry

Industries

cosmetics and electronic production
pond & lake reclamation
laundry water

How do ultraviolet purifiers work? [3]

Atlantic Ultraviolet Corporation’s purifier units contain one or more germicidal ultraviolet lamps. STER-L-RAY® Germicidal Lamps are shortwave, low pressure tubes that produce ultraviolet wavelengths lethal to microorganisms. Approximately 95% of the ultraviolet energy emitted from STER-L-RAY® germicidal lamps is at 254 nanometers, the region of germicidal effectiveness most destructive to bacteria, mold and virus. Therefore, the water or air that passes through the chamber is exposed to the germicidal uv light and the genetic material of the microorganism is deactivated, which preventing them from reproduction and rendering them harmless.

source: https://ultraviolet.com/what-is-germicidal-ultraviolet

Our solution

We have created a sterile box to disinfect helmets using the features of UV sterilizer technology. The box can also be used to disinfect other things. In this pandemic situation (COVID-19), we should disinfect everything before and after using it.

Necessary things

Arduino UNO (microcontroller)
UV germicidal Lamps.
Push Button
Buzzer
Mosfet Switch
Power supply
PVC boards
Wires/jumper wires

Block diagram.

Building the system

We make the box according to the standard measurements of the helmet. PVC/ boards are used to make this box. We put some UV-lamps inside the box. These lamps are used for disinfection. We used a low cost microcontroller to control the whole sanitation process. We include a buzzer and a push button that make the system more user friendly.

Please note, we used UV LEDs to develop this prototype.

Prototype box.

Prototype box (UV LED).

Prototype Helmet Sterilization box.

Circuit Diagram.

Demo

Demonstration

Reference

1. http://roboticsbangladesh.com/techReport/uv_lamp_tech.pdf

2. http://roboticsbangladesh.com/techReport/Wyckomar_UVTechnology.pdf

3. https://ultraviolet.com/what-is-germicidal-ultraviolet/

Code

Source Code

const int BUTTON_PIN = 7; // Arduino pin connected to button's pin
const int BUZZER_PIN = 3; // Arduino pin connected to Buzzer's pin
const int UV_PIN = 8; // Arduino pin connected to UV LIGHT 

void setup() {
  Serial.begin(9600);                // initialize serial
  pinMode(BUTTON_PIN, INPUT_PULLUP); // set arduino pin to input pull-up mode
  pinMode(BUZZER_PIN, OUTPUT);       // set arduino pin to output mode
  pinMode(UV_PIN, OUTPUT);
}

void uvLamp()
{
    Serial.println("......Sanitizing in progress.......");
    digitalWrite(UV_PIN, HIGH); // turn on UV LAMP
    delay(7000);
    digitalWrite(UV_PIN, LOW); // turn off UV LAMP
    digitalWrite(BUZZER_PIN, HIGH); // turn on BUZZER
    delay(800);
    digitalWrite(BUZZER_PIN, LOW); // turn off BUZZER
}



void loop() {
  int buttonState = digitalRead(BUTTON_PIN); // read new state

  if (buttonState == LOW) {
    Serial.println("The button is being pressed");
    // digitalWrite(BUZZER_PIN, HIGH); // turn on BUZZER
    uvLamp();
  }
  else
  if (buttonState == HIGH) {
    Serial.println("The button is unpressed");
    digitalWrite(BUZZER_PIN, LOW);    // turn off BUZZER
    digitalWrite(UV_PIN, LOW);        // turn off UV LAMP
  }
}

Credits

Salah Uddin

44 projects • 148 followers

Technology and IoT Hacker, Robot Killer and Drone lover.

IoT-Bangladesh

19 projects • 49 followers

Comments

Awards

First 25 Qualified Contest Entries

UV Robot Design Contest

Helmet Sterilization Box