The main aim of this project is to design a prototype model of ultraviolet sterilization to sterilize the objects which can be works based on time. The main controlling device of the project is Arduino nano microcontroller. UV light along with relay, buzzer, LCD, IR sensor and HC-05 Bluetooth module is interfacing to the Arduino nano microcontroller. This device will enable/disable based on IR sensor input. IR sensor detects whether the door is open or closed. It is automatically OFF when the door is open and ON when the door is closed. Arduino nano will continuously read the input from IR sensor based on that it will switch ON/OFF the UV lamps for Ultraviolet Sterilization. When the use enters the time from Bluetooth mobile application. This data received by Bluetooth module and fed as same input the Arduino. Arduino will switch of the UV light until the time complete through relay. Here relay works as a switch to on/off the UV lamp. After the time completion Arduino will switch on the buzzer for alerts. The status of the project will display on LCD module. To achieving this task the controller is loaded with a program written using Embedded ‘C’ language.

    The objectives of the project include:

• Timer based UV Sterilization system.
• Using Bluetooth technology to enter the time from Bluetooth mobile application.
• After the time completion BUZZER will be switched ON.
• Display the time on LCD module.
• Our main objective in this work includes equipment 3 that can serve the purpose of sterilization of various items and surfaces that helps us during the Corona outbreak.

  The major building blocks of the project are:

• Regulated power supply.
• HC-05 Bluetooth module.
• ARDUINO UNO Microcontroller.
• Relay.
• Buzzer.
• IR sensor.
• UV lamps.
• LCD display.
• LED indication.

Software’s used:

1. Arduino IDE for compiling and dumping code into Microcontroller
2. Express SCH for Circuit design.
3. Embedded C Language.

     

   

Block diagram:  

   

 

video: