OBJECTIVES
This study is focus on designing the automatic hand washer. Through this well design technology, it can prevent the deathly disease from spreading into others.
The objectives of this project are as below:
1) To design a well and convenient automatic hand washer.
2) To allow users to soap, wash and dry their hands without a single touch from the
users.
3) To do simulation of water flow in the nozzle of the automatic hand washer.
PROBLEM DESCRIPTION OF EXISTING SYSTEM:
•There are many systems present.
•We need to touch the hand wash before using it.
PROPOSED SYSTEM:
Our proposed system is made up of the Ultrasonic sensor was interfaced to the
microcontroller, codes were written with the Arduino sketch and the physical
sensor was connected to the microcontroller. The Arduino UNO is a
microcontroller board based on the ATmega328p(datasheet).It has 14 digitals
outputs and inputs pins of which 6 can be used as PMW outputs,6 analogs
inputs, a 16MHz quartz crystals, a USB connection ,a power jack, an ICSP reset
button.
SIGNIFICANCE OF PROJECT:
•This system helps the entire process automatically.
METHODOLOGY
Here, An Arduino Uno microcontroller is used since it is easy to program, has inbuilt ADC, DAC. The input to the Arduino is given using an ultrasonic sensor, which is used to sense the distance, it emits ultrasonic frequency from one side and the notes the time taken by sound wave to get reflected back. When the sensor senses the hand, at a distance less than 7cm from the sensor, the Arduino gives a 100ms pulse from its digital output pin. The pump cannot be used directly, hence a relay is used as a switch. The relay accepts the pulse from Arduino and makes the pump run. The pump is 3 to 12V submersible type, which pumps out a few drops of hand sanitizer on to the hands, after pumping, the distance is sensed for every 1000ms(1s) for scanning purposes.
TOOLS AND TECHNOLOGY
TOOLS:
Arduino IDE: It is used to write and upload programs to Arduino board. The
Arduino IDE supports languages C and C++ using special rules of code
structuring.
TECHNOLOGY:
C LANGUAGE: It is imperative computer programming language,
supporting structured programming, lexical variable scope and recursion, while
a static type system prevents many unintended operations.
HARDWARE AND SOFTWARE REQUIREMENTS TO RUN THE PROJECT:-
HARDWARE REQUIREMENTS:
•Operating System: Window 7 or above
•Processor: i3 or above.
•Installed Memory(RAM): 4 GB RAM
•System Type: 32-bit or 64-bit Operating System
•Ultrasonic sensor (distance measure)
•Arduino UNO
•Arduino Connector
•Battery (9 volts)
•Jumper Wires
•Servo Motor
•Hand Wash
•Battery Connector
SOFTWARE REQUIREMENTS:
•Arduino IDE 1.8.3
FEASIBILITY STUDY
A feasibility study aims to objectively and rationally uncover the strengths and weaknesses of an existing business or proposed venture, opportunities and threats present in the natural environment, the resources required to carry through, and ultimately the prospects for success. In its simplest terms, the two criteria to judge feasibility are cost required and value to be attained. This project refers to the five areas of feasibility - Technical, Financial, Operational, Resource and Time.
Technical feasibility
This assessment is based on an outline design of system requirements, to determine whether the company has the technical expertise to handle completion of the project.
Financial feasibility
In case of a new project, financial viability can be judged on the following parameters:
•Total estimated cost of the project.
•Financing of the project in terms of its capital structure, debt to equity ratio
and promoter's share of total cost.
•Existing investment by the promoter in any other business.
Operational feasibility study
Operational feasibility is the measure of how well a proposed system solves the problems, and takes advantage of the opportunities identified during scope definition and how it satisfies the requirements identified in the requirements analysis phase of system development.
Resource feasibility
Describe how much time is available to build the new system, when it can be built, whether it interferes with normal business operations, type and amount of resources required, dependencies, and developmental procedures with company revenue prospectus.
Time feasibility
A time feasibility study will take into account the period in which the project is going to take up to its completion. A project will fail if it takes too long to be completed before it is useful.
RESULTS
In the above paper,
Arduino is used as a microcontroller for calculating the distance between the
sensor and the hand placed below it. If it is less than 7cm, then pump runs for
100ms through a relay and pumps out few mL of liquid alcohol based hand
sanitizer and also senses the distance for every 1000ms. Components like pump,
relay, Arduino microcontroller were tested. The Hand Sanitizer used was liquid
type with Isopropanol and Chlorohexidine Gluconate (0.3%). This can also be
used for gel type hand sanitizer also.
CONCLUSION
The system surely help in implementing the hand hygiene without
any challenges as it is a must to sanitizer if you are to access any entry
point. It is much safer and more recommended due to its touch less property
which zeros down any chances for cross contamination. This is a user friendly
system that anyone can make use of. It can be concluded here that the system
has been successfully implemented and the aim is achieved without any
deviations.
Thankq
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