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ISSN No:-2456-2165
Abstract:- In this present world where technology has action. The Arduino node MCU is connected to these
taken over everything reaching new heights and in relays and once the signal gets connectivity and the
between this tremendously growing technology the user orders a command the relays will start working
technology of IOT (Internet Of Things) has sparkled and simultaneously the home appliances will get
its way ahead of other fields and promises to deliver power supply and will start working in normal
much more aspects in this world. It possesses a great functioning condition.
potential for future applications and offers a wide
range of scope for the generation to come. If we talk Keywords:- Smart Home Automation, Smart Fault
about controlling the world from a click of a single Detection, Arduino Node NCU, Internet of Things,
button then IOT has achieved its dream status. There Relays.
are many standard appliances in industries and our
homes that make our day to day life and work easier I. INTRODUCTION
and therefore it becomes a necessity to control these
appliances remotely. And for the same machine to In today’s world technology has become an
work requires a secondary brain or automation essential part of everyone’s lives to such an extent that
(secondary machine) which does the tasks of the user commodities like internet and smart phones have become
as per the requirement from long distances. The a necessity in almost many parts of the world. Though it
proposed paper aims at designing a smart home will reach new heights and technology is ever changing
automation and monitoring system along with smart from time to time but Internet with its constant stability
fault detection to ensure the security parameters of and support will remain the world’s best invention of all
the project. In this project the main component is the time. Internet and Technology seem to go hand in hand
arduino node MCU to showcase the working of IOT. and will continue to do so in the future generations to
The algorithm designed is developed in the arduino come. Now it’s the time for automation to rise up. World
programming language. The algorithm is linked to is leaning on the smart machinery which can generate
the GUI through the same environment and also with such potential and fulfil the tasks where once human
the help of an android application which is efficiency could not deliver much. Automation simply
specifically used to provide IOT enabled modules and means to operate or control a process by highly
libraries that were needed to work on the proposed automatic machinery by electronic devices reducing the
system. The system talks about the solution to every human intervention to the minimum. Although it requires
individual’s theft fear and ensures that no problem is the human touch in terms of thinking and planning where
compromised. With the basic ideology to provide a knowledge base is required but manual labor has been
fault detections in order to increase the security of the denigrated a lot which in turn is a lot of relief for the
house and also make the household appliances to manufacturers. The use of automation is dilated and
work with just a single button on the smart phone Home Automation is one of its many factors. Home
device makes the system slightly different. The results automation comes with its numerous advantages and
also shows the same concept which is mentioned that’s why it is quite popular in smart cities. Home
before with efficient implementation and in a much automation can be defined as the automation done to
friendly manner. This paper deals with web control and operate home based equipment or building.
connectivity with IOT wifi module Esp8266 and much And the system comprising of automating the home
efficient control of the home appliances. The appliances is known as home automation system. So in
connectivity achieved is by use of Arduino Node NCU layman terms home automation is smart home. It may
and also acts as a bridge or an interface between the include centralized controlling of home appliances and
hardware and software part of the project. Overall lighting, electronic devices and security systems.
this gives us a platform to understand and implement
the working of hardware like microcontroller which The biggest advantage that has led this system to a
gets its command from the software component tremendous growth and popularity is because it can be
(arduino programming language). In order to make controlled by the elderly as well as the disabled. With the
the home appliances work the use of relays come into growing demand for internet connectivity in every city
The Web Controlled Home Automation System appliances and forward it to the main controller as an
involves the above discussed three controlling system. input signal and display it on the android application to
The primary controller is the main controller unit, and inform the user. Shown in figure 2 below are the working
the secondary controller is the android application flow details on the controlling and monitoring processes
controller. The error monitoring or error detection is of this Smart Fault Detection and Smart Home
monitored by the working mechanism of fault detection Automation System.
system which implies current feedback from the home
IV. SYSTEM WORKING AND CONFIGURATION Comparator IC is used which is important to show the
working of fault detection. From the comparator IC
The working of the above shown system is as we have deduced two logics namely the open circuit
follows: method and the short circuit method.
First of all for power supply we take 220V AC Till the time the circuit is closed and current is
current from the power source. flowing there is no breakage as soon as the circuit is
Next there is a step down transformer which will opened or there is a short circuit there will be no
convert the 220V input voltage to 12V power supply. current feedback so a warning will be sent to the
Using 220V will damage the products. Node MCU and the user will be notified through the
The transformer will still generate 12V AC current so display.
there was a need for a rectifier which will convert the For the working of the fault detection the comparator
12V AC current to DC current. IC (LM358) is used and a variable resistance is used
During rectification there is a chance of noise coming to provide reference voltage.
so in order to cancel the noise factor we have used the Till the time there is proper current feedback with
1000 μF capacitor. respect to the resistance the IC will take that as a yes
Now a need to make the 12V supply to 5V we have and as soon as there is a breakage in circuit there will
used a regulator IC 7805. a difference in the voltage and automatically the IC
During regulation the noise will be present so for the checks will give an indication in the form a red signal
same we installed a 100 μF capacitor. Resistor and LED signifying that there is a fault.
LED are taken to check the power supply. These signals are then transferred to the connector
Input Voltage pin Vin which takes the supply for the pins of the Node MCU.
Node MCU. Positive and negative connectors are also As soon as the signals are sent to the Node MCU it
taken. performs the required actions which we have