COVID- RELIEF ROBOT{AUTOMATIC MIST BASED SANITIZER DISPENSING SYSTEM}

 

 

INTRODUCTION TO RESEARCH

(AUTOMATIC MIST BASED SANITIZER DISPENSING SYSTEM

UV CHAMBER FOR SANITIZING OBJECTS)         

ABSTRACT

As we know that the COVID-19 cases are increasing rapidly it is a required measure to avoid contact with others and keep on sanitizing our hands-on regular basis. The sanitizer can be touched by many people entering and leaving the premises. So, to avoid the human touch from the surface of the sanitizing system technology comes forward to deliver their duties for not touch or performing any kind of human touch. The automated sanitizing system provides us to non-touch the system and reduces the chances of the infection that is spreading at a very peek point. So even when we sanitize our hands, we must also look toward the objects that we use in our day-to-day life that devices like: mobile, keys, watches, and many more also used to be sanitized or kept away from the virus, so to avoid infection. So sometimes access use of sanitizer on the objects may lead to harm or damage the device so to avoid the damage of the products. for avoiding the damage of the product here the technology called UV light that we are using to avoid the same. The UV light can kill micro-organisms or viruses that may be on the surface of the mobile phone and may spread through touching.

so, to avoid the virus we tend to use the automated sanitizing system.

2. Introduction

Corona Virus disease (Covid19) is a global pandemic. WHO announced it as a Pandemic disease and many cities are under lockdown, people are not able to step out of their homes and already thousands have lost their lives. As the global Covid-19 crisis continues to unfold, washing and sanitization of hands have become an absolute necessity in daily affairs. Automatic mist-based sanitizer dispensing system and UV Sanitization is a very useful resource in the fight against coronavirus. This contact-less dispensing system helps to sanitize hands without getting in contact with the sanitizing surfaces and will help to reduce spread through cross-contamination. Also, the UV Light used helps to sterilize things and equipment like Mobile Phones, Keys, etc. This contactless dispensing unit sprays alcohol-based sanitizer when both hands are placed under it. The aerated mist-based formula uses only 5- 6ml. of sanitizer ensuring optimum usage. It releases full cone spray mist for 5 seconds in a single operation. Contactless technology works on the photoelectric sensors to ensure zero-touch, high operational precision to completely disinfect both hands at once. It could be wall mountable with LEDs to indicate on/off status and the progress of the process. The UV Chamber used for sterilizing the objects is completely safe and operates with a switch to turn it on manually. The capacity tank ensures a longer duration of usage thus eliminating the hassle of refilling it frequently.

 3. Automatic Mist-Based Sanitizer Dispensing System

The automatic Mist-Based Sanitizer Dispensing System is a photoelectric motion sensor-based dispenser. It is used to dispense any alcohol-based sanitizer. It has a touchless operation, which makes people fearless and more confident about the sanitization process. Due to the inbuilt motion sensor, it senses the hand motion below the brass nozzle and opens the valve to dispense sanitizer. In the time of the world pandemic COVID 19, the automatic Hand Sanitizer dispenser is an essential product to kill the effect of coronavirus.

3.1 UV Light Sterilization Chamber

Infectious diseases are transmitted by various means through human touch or droplets in the air or on surfaces. UVC irradiation is proven to inactivate many microorganisms and viruses. UV light is electromagnetic radiation with a wavelength shorter than visible light. UV is categorized into several wavelength ranges, with short-wavelength UV. Ultraviolet Germicidal Irradiation is a disinfection method that uses short-wavelength UV Light to kill or inactive microorganisms by destroying nucleic acids in their DNA, leaving them unable to perform vital cellular functions.

3.1.1 WORKING

An automatic hand sanitizer spraying machine and a UV Chamber by using the Mitsubishi PLC. PLC is used to perform automatic operations like operating sensors, switches, pumps, and motors. As compared to microcontrollers, PLC has more input capacity and memory it is reliable to any application and able to communicate with various protocols and it also has faster processing time then microcontrollers. It can work in any hazardous area and with fewer failures as compared to the microcontroller. When a person put his hand into the mist dispenser, the photoelectric sensor senses the hand which is connected to the PLC. It is provided with a PLC pulse which triggers the 24V DC pump connected to the PLC and keeps it on for a period of 3 seconds. The pump will pump the sanitizer from the bottle provided through the pipes to the mist nozzles which spray a mist of sanitizer all over the hands. The person can now take his hand out of the machine and put his valuables/daily used items like phone, keys, etc. in the chamber provided aside from the hand sanitizer machine. The chamber is consisting of UV light cleaning which is dangerous for human skin. So, to avoid working of UV light when the chamber is on an IR sensor is placed inside the lid to avoid any accident. So once the lid is closed, a push-button can start the UV light and will remain on for a period of 1 minute until someone opens the lid it will trigger the sensor which sends a signal to PLC and it will cut-off the supply to UV light.

 

4. EQUIPMENT: -

                                                        Figure 1 PLC (MITSUBISHI)

 

                                                                                                                     

  Figure 2 DC PUMP

                                                     Figure 3 PHOTOELECTRIC SENSOR

                                                              Figure 4 RELAY

                                                                          

                                                               Figure 5 SMPS

 

4.1 MINOR COMPONENTS

 

 

                     FIGURE 6 PUSH BUTTON                                           FIGURE 7 PIPE

                      

                                                                                                                                                      

 

      FIGURE 8 RESISTOR                                                            FIGURE 9 WIRE

                                                                                                                           

5. SIMULATION PROCESS

5.1 PLC

It is an industrial computer control system that continuously monitors the input and make decisions based on the custom program to control the state of the output.

5.2 Types of PLC: -

There are two types of plc: -

1. Modular plc: - It is a plc in which power supply, input modules are being attached separately.

2. Non-Modular PLC: it is a plc in which the power supply, input modules are inbuilt or extensions can be used for more modules.

5.3 FUNCTION OF A PLC

1. Senses the input

2. Executes the logic

3. Diagnosis and communication

4. output scan

5. Automation

5.4 ARCHITECTURE OF A PLC

                                                    Figure 10 ARCHITECTURE OF A PLC

6. PLC USED

FX-5U SERIES PLC

Memory size- 64k

Input port: - 512 (256 input ports and 256 output ports)

Communication ports: - Ethernet, USB, SD card, etc.

Max expansion module: -

1.     16 I/O module

2.     Power supplies

3.     Communication modules

6.1 BIT DEVICES

1. input relay-x

2. output relay -y

3. internal relay -M

4. latch relay -L

5. Data Register- D

6. Special Relay- SM

7. Timer- T (T0-T511) 512 points

8. Retentive timer- ST (ST0—ST15) 16 points

9. Counter- C (C0-C255) 256 points

10. Long Counter- LC (LC0-LC63) 64 points

7.1   LADDER PROGRAMMING

X0: Start button for the machine

X1: Stop Button for machine

X2: Photoelectric Sensor

Y1: 24V DC Pump

 

X3: UV Chamber Push Button

Y2: UV Light

T0: 3-second timer for Mist Dispenser

T1: 1-minute Timer for UV chamber

8. ADVANTAGES OF AUTOMATED HAND SANITIZER

1.  Automatic: it provides a truly touchless experience

2. better to use: it is more efficient and easier to use than conventional hand dispensing machine

3. delivers a standard dosage: it prevents wastage of sanitizer as it only provides a standard amount.

4. modern technology

9. APPLICATION

Mainly used in: -

1. Hotel, restaurant, schools, offices, homes, etc

2. Hospitals

3. Air disinfection

4. Food and beverage protection

10. CONCLUSIONS

Automatic mist-based sanitizer dispensing system and UV chamber for sanitizing objects is based on the automated function which runs on the plc automated system to avoid the human touch on the sanitizing system and on the UV chamber system to avoid to overcome with the virus and the infectious disease COVID-19.  

 

11. REFERENCES

1.      https://www.techinstro.com/automatic-sanitizer-dispenser/

2.      https://en.wikipedia.org/wiki/Programmable_logic_controller

3.      https://www.mitsubishielectric.com/en/about/locations/index.page

4.      https://www.light-sources.com/blog/uv-light-sterilization-history-effectiveness-and-uses/

5.      https://www.livescience.com/50326-what-is-ultraviolet-light.html

 

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