- Open Access
- Authors : Manas Singh Mehra
- Paper ID : IJERTV11IS070165
- Volume & Issue : Volume 11, Issue 07 (July 2022)
- Published (First Online): 27-07-2022
- ISSN (Online) : 2278-0181
- Publisher Name : IJERT
- License: This work is licensed under a Creative Commons Attribution 4.0 International License
IoT based Smart Home Automation System using Raspberry Pi
Manas Singh Mehra Bhavan Vidyalaya Panchkula, Haryana, India
Abstract:- At its very basic, home automation means automatic and electronic control of household utilities, security devices and appliances. An integrated approach to home automation implies the user and associated home appliances communicate with one another seamlessly. The aim of this research paper on Smart Home Automation is to explore the technical challenges of setting up a cost-effective home automation system with a web-based interface and assess its effectiveness in operating household utilities and security devices. Consequently, this paper evaluates the setting up of a smart home automation system employing Python Webserver with Flask based user interface and a Raspberry Pi. Flask is a lightweight Python web framework which enables quick creation of web-based applications using a single Python file, whereas the Raspberry Pi with its powerful CPU allows connection of multiple sensors simultaneously. The paper studies key aspects of sensor and software integration, analyses communication protocols and dwells on code development facets. Overall, the smart home automation system was seen to function smoothly and a cost economical setup of this kind besides enhancing home security and entertainment; can also assist the elderly in leading a better quality of life.
Keywords:- Home Automation, Internet of Things based smart homes, Raspberry Pi, Python Webserver Flask, Sensors
The term Internet of Things (IoT) refers both to the collective network of linked devices and the technology that facilitates communication between them. Home automation is one of the best examples of IoT as it seamlessly integrates consumer electronic gadgets as cameras, sensors, lights, fans, air-conditioners, etc. to each other via the internet. The wireless network approach towards IoT based smart homes – employing a Raspberry device and Python Webserver with Flask – offers seamless, cost-effective and scalable solutions which can be easily maintained and preserved. It results in numerous benefits as security and continuous monitoring of our homes, provision of timely healthcare and medical services to the elderly, energy conservation and addresses entertainment, comfort and lifestyle aspects also. This research paper on Smart Home Automation examines the practical trials and effectiveness of an economical home automation system. Through a Raspberry Pi and Python web-based interface home automation system, the users operate their home devices and security sensors. This paper reinforces the convenience, security, entertainment and health care benefits that accrue from utilizing simple IoT devices.
A significant amount of technological development has taken place in this field of home automation. Initial mobile based home automation systems utilized Java based boards, central
computer and servers. Later Bluetooth, RFID, cellular network and Wi-Fi technologies were utilized in home automation system along with Arduino and Raspberry Pi integrated to Android phones. In recent times voice control over internet, cloud networking and wireless communication have been utilized for home automation systems. Latest trends include Machine Learning algorithms and Block-Chain technologies for enhancing communication, reliability, security and integrity of the network. The above systems are however complex, expensive and preclude the Do – It – Yourself user. A Raspberry Pi with Python interface on the other hand is an economical, efficient and scalable method with excellent user experience.
STRUCTURE OF PAPER The paper is organized in following parts: –
Proposed system architecture.
Execution of the project.
Analysis of results.
PROPOSED SYSTEM ARCHITECTURE
SOFTWARE & HARDWARE COMPONENTS
The various components employed in the home automation system for a cost effective and open-source structure are: –
Raspberry Pi 4
Raspberry Pi is a low cost, small size computer that runs on Linux OS. Raspberry Pi is used as the local webserver and its General-Purpose Input/Output (GPIO) pins are controlled through a simple webpage.
Setting Up of Raspberry Pi
Raspberry Pi is set up before it can be used. And this is done in the following manner: –
Raspberry Pi with Raspbian OS is loaded and configured using the Raspi-config command.
Post this the Secure Shell (SSH), Virtual Network Computing (VNC) and camera are enabled. SSH command makes a secure encrypted link amongst two hosts across an insecure network. Using Putty – an SSH client – Raspberry Pis command line is remotely accessed to execute the commands.
VNC on the other hand is a graphical desktop-sharing system, which is used to remotely control another computer.
Apart from Raspbian OS, Python Flask was the other software used. Flask is a Python web framework, which offers helpful tools and features that simplifies the process of creating web applications. Flask was directly installed from the Raspbian OSs command line using: sudo apt get-install python3-flask.
Other Hardware Components
Other hardware components integrated were: –
IR, fire detection and PIR sensors.
Webcam and LEDs/ lights.
5 V Eight Channel Relay module.
Misc. components to include jumper wires, power supply etc.
The block diagram of the proposed architecture as given below depicts the integration of hardware sensors in to the Raspberry Pi computer. The sensors based on environmental inputs send the data to Raspberry Pi which further processes the data. Corresponding values are then fed to the Relay Panel which changes the state of the devices as per the received input.
Fig. 1: Proposed Architecture
EXECUTION OF THE PROJECT
Hardware integration of electronic components with the Raspberry Pi was undertaken and project was set up for remote access. The integration of the sensors with Raspberry Pi was as below: –
Fig. 2: Raspberry Pi & Sensor Integration
Fig 3: Raspberry Pi & Sensor Integration
The codes in the system architecture were applied as per steps depicted below: –
Step1: Raspbian Command Line. All code sequences were completed using the Raspbian command line. SSH was enabled in the Pi device and the command line was remotely accessed from another device.
Step 2: Web Page. An HTML (Hyper Text Markup Language) file for setting up the basic structure of the web page was created and linked to a CSS (Cascading Style Sheet) file to improve the aesthetics of the web page.
Fig. 4: Cascading Sheet File
Step 3: Python Code.
Python code was set up first by importing Flask and RPI.GPIO. The General-Purpose Input/output pins on the Pi were defined according to the completed hardware connections.
For sensor results the status of input pins were noted and the data sent to HTML web page via the render_template function. The sensor data was displayed on the webpage when the server was run.
For hardware appliances (lights, fan etc.) connected to the defined output pins on the Pi, hyperlinks attached to the webpage (via the tml file) along with conditional statements were used. The python webserver was run and port communication established via the app.run () function.
Fig. 5: Python Code
WEB PAGE INTERFACE
Raspberry Pi communicates with the user via the web interface, who can view and control the sensors by scrutinizing their current state. The server, client applications and the interface were set in Python code. The information on existing state of sensors and appliances is always stored in SQL database of Raspberry Pi and the database is continuously synched with the user interface. For example, the user can
press the On/Off button in user interface or use the voice command to send a signal to the Raspberry Pi.
learning algorithm can be applied for such decision making about the status of home devices and sensors. Security and integrity of home automation system can be enhanced of IoT system using blockchain technology to ensure secure communication.
Fig. 6: Web Page Interface
ANALYSIS OF RESULTS
EXAMINATION OF RESULTS
Python and HTML codes used
Worked as expected
At times did not measure readings and also had a limited range.
Low sensitivity was observed
5 MP camera
Inexpensive camera was used
Budget price Cost increases if high-end cameras used
The smart home IoT automation system was accomplished and functioned smoothly as described in this paper. The structure enabled seamless control of sensors and appliances from a Python based user interface. The IoT system was overall found to be flexible, economical, efficient and scalable low-cost home automation solution. The interface design was user friendly and structure was fairly secure as it operates under the home Wi-Fi network. The key observations are as tabulated below: –
REFERENCES D. Pavithra and R. Balakrishnan, "IoT based monitoring and control system for home automation," 2015 Global Conference on Communication Technologies (GCCT), 2015, pp. 169-173, doi: 10.1109/GCCT.2015.7342646.  R. K. Kodali, V. Jain, S. Bose and L. Boppana, "IoT based smart security and home automation system," 2016 International Conference on Computing, Communication and Automation (ICCCA), 2016, pp. 1286- 1289, doi: 10.1109/CCAA.2016.7813916.  M. Al-Kuwari, A. Ramadan, Y. Ismael, L. Al-Sughair, A. Gastli and M. Benammar, "Smart-home automation using IoT-based sensing and monitoring platform," 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE- POWERENG 2018), 2018, pp. 1-6, doi: 10.1109/CPE.2018.8372548.  Madihalli, and Chougala. 2019. "Advanced Home Automation System Using Raspberry Pi". Jetir.Org. https://www.jetir.org/papers/JETIR1906923.pdf.  Kiran D. Suthar, S.K. Hadia, Brijesh Shah, "Home Automation Using Raspberry Pi with Android Application", International Journal of Research in Advent Technology, VOLUME-7 ISSUE-3, MARCH 2019, page no. 1044-1046, www.ijrat.org  Sagar, Saurav and Choudhary, Ujjwal and Dwivedi, Rinky, Smart Home Automation Using IoT and Raspberry Pi (April 4, 2020). Proceedings of the International Conference on Innovative Computing
& Communications (ICICC) 2020. Divya Purohit & Moumita Ghosh, Challenges and Types of Home, Automation Systems International Journal of Computer Science and Mobile Computing, Vol.6 Issue.4, April- 2017, pg. 369-375  Abhilash Sinha, Ramasai Tatikonda. "IoT based home automation using Raspberry Pi." International Journal of Advance Research, Ideas and Innovations in Technology 5.1 (2019)  Sandesh D. Patil, Jitendra M. Mahajan, Sushant M. Nagare, "Home Automation using Raspberry PI, IJACEN, Volume-7, Issue-5, pp 1- 5 ,2019  Venkatesh, K & Hemaswathi, S & Balakrishnan, Rajalingam & Rajkumar, P. (2018). IoT Based Home Automation Using Raspberry Pi. Journal of Advanced Research in Dynamical and Control Systems. 10.1721-1728.  Irwin Soni, Design and implementation of home automation system using Raspberry Pi A Project Presented to the Faculty of California State Polytechnic University, Pomona 2018.  P Bhaskar Rao et al, Raspberry Pi home automation with wireless sensors using smart phone International Journal of Computer Science and Mobile Computing, Vol.4 Issue.5, May- 2015, pg. 797-803.  https://towardsdatascience.com/python-webserver-with-flask-and- raspberry-pi-398423cc6f5d  https://www.hackster.io/ahmedibrrahim/smart-home-automation-iot- using-raspberry-pi-and-python-47fb62#team
CONCLUSION AND FUTURE DEVELOPMENTS
A home automation setup of this kind can be established in an economical manner using open-source software. This setup will enhance security of homes, management of home appliances as lighting, heating, entertainment etc. in a simple, flexible, robust and cost-effective manner. Future developments of this system would include incorporating a decision-making ability about the status of each device of the home especially for elderly and patient care. A machine