home automation system using android … · dtmf based home automation system are widely used for...

International Journal of Innovative Research in Advanced Engineering (IJIRAE) ISSN: 2349-2163 Issue 04, Volume 5 (April 2018) www.ijirae.com

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HOME AUTOMATION SYSTEM USING ANDROID

MOBILE PHONE

Praful Nandankar* Electrical Engineering. Department

Government College of Engineering, Chandrapur [email protected]

Akash Zade Electrical Engineering. Department


Namrata Wadhai Electrical Engineering. Department


Manuscript History Number: IJIRAE/RS/Vol.05/Issue04/APAE10088 Received: 10, April 2018 Final Correction: 15, April 2018 Final Accepted: 24, April 2018 Published: April 2018 Citation: Nandankar, Zade & Wadhai (2018). HOME AUTOMATION SYSTEM USING ANDROID MOBILE PHONE. IJIRAE::International Journal of Innovative Research in Advanced Engineering, Volume V, 149-153. doi://10.26562/IJIRAE.2018.APAE10088 Editor: Dr.A.Arul L.S, Chief Editor, IJIRAE, AM Publications, India Copyright: ©2018 This is an open access article distributed under the terms of the Creative Commons Attribution License, Which Permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited

Abstract— This paper presents the overall design of Home automation system with low cost and wireless system. Home automation plays an important role in our daily life. Home automation saves money, time and it also reduces labour work. Home automation system is advantageous for old aged and handicapped person. The standard of living at home is also improved by smart home concept. The switch mode and voice mode are used to control the home appliances. The video feedback is received in the android application which streams the video of IP Camera. This paper presents the main control system which implements the wireless technology and this technology provides remote access from android phones. The design remains the existing electrical switches and provides more safety control on the switches with low voltage activating method. The switches status is synchronized in all the control system whereby every user interface decodes the real time existing switches status. This system is designed to control electrical appliances and devices in house with low cost and ease of installation. The system designed in this paper is user friendly.

Keywords— Home Automation systems; Relay; Arduino; Home Security; Automation;

I. INTRODUCTION Home automation system reduces labour work and money. In recent years, the interest for home automation among consumers are increasing. Home automation provides home safety for dwellers. . It automatically turn lights on in closets, stairways, and other dark places. Thus accidentally tripping or running into thing is decreased. Home automation system doesn’t have any influence on environmental issues. In this regard, home automation provides a better solution. The devices incorporated in home automation system consumes less power. It also saves energy. Thus home automation technology is so far environmentally suitable. The comfort and security of houses have been enhanced in home automation system.

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Besides, people are concerning over costs. In offices, a division of people are employed only to make supervision of some manual means typed work. Home automation is replacing those arrangements. For this, cost is highly reduced. Besides, for manual labour engaged to control appliances waste energy in cases. It is seen that appliances continue to run though people are not present in their respective places. For this, energy cannot stop consuming. If this happens for a long time then there have possibility to misuse energy in a huge amount. To overcome this obstacle, home automation is encouraged to apply. Hence, home automation is presented as energy efficient. There are different types of communication in control appliances to control home appliances, industrial appliances, and other type of automation. There are two types of communications i.e. wired and wireless. In wireless communications, the signals are transmitted wirelessly like using radio frequency and in wired communication, copper wires are used. In this paper, DTMF based home automation system controls home appliances wirelessly. The microcontroller is not used in above home automation system.

II. BLOCK DIAGRAM OF HOME AUTOMATION SYSTEM

The block diagram of home automation system is shown in Fig.1. Home automation system comprises of Android mobile phone, DTMF Decoder, Relay driver and AC loads.

Fig. 1 Block diagram of Home Automation system

The abbreviation of DTMF stands as Dual Tone Multiple Frequency. DTMF controlled home automation works on DTMF technology which exists in Dial tone. DTMF tone is created by using some frequencies. DTMF tone is generated by adding or mixing two or more frequencies. These frequencies are shown in frequency table in Fig.2. When one upper and one lower frequencies are mixed, then a tone is created and this tone is named as Dual Tone Multiple frequency.

Fig. 2. Frequency Table

A. DTMF Decoder DTMF decoder plays an important role in home automation system. The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the band split filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface. DTMF decoder has complete DTMF receiver. It consumes low power and power down mode is also inherent in DTMF decoder. It also has features like internal gain setting amplifier, adjustable guard time and central office quality. DTMF decoders are used in various applications like paging systems, repeater systems, mobile radio, credit card systems and telephone answering machine.





Fig. 3. Pin Diagram of MT8870

B. Relay Driver AC loads are connected to DTMF decoder through relay driver IC ULN2003A. It is difficult to use a number of relays with transistors, so, relay driver ICs can be used for availing more relays. Seven relays are used with relay driver circuit using ULN2003 and ULN2803 uses eight relays. It is also used for interfacing microcontroller to relay. The clamp diodes are built in these relays which eliminates the use of freewheeling diodes. ULN2003 contains 7 high-voltage and high current Darlington pairs and each pair is rated for 50V and 500mA. Input pins can be triggered by +5V. All seven output pins can be connected to gather to drive loads up to (7×500mA) ~3.5A. These are directly controlled by logic devices like Digital Gates, Arduino, and PIC etc. The relay driver IC ULN2003 has numerous applications such as logic buffers in digital electronics, touch sensor for Arduino, relay driver module etc. It is also used to drive stepper motors and high current loads using digital circuits.

III. CIRCUIT DIAGRAM OF HOME AUTOMATION SYSTEM

Fig. 4. Circuit diagram of Home Automation System





The circuit diagram for DTMF controlled home automation system is shown in Fig.4. In this circuit diagram, a DTMF decoder is used named as MT8890 IC which converts dial pad tone into the four bit digital outputs. The loads are connected to DTMF decoder IC through a relay driver namely ULN2003. LIGHT, FAN and TV are connected to Q1, Q2 and Q3 of DTMF decoder IC. 5 volt SPDT 3 relays are used for controlling LIGHT, FAN and TV.

In this circuit diagram, three LED’s are also connected at relay and 9V DC battery is also used for driving LED’s. AC appliances are controlled by pressing dial pad keys like 1, 2,3,4,5 etc. The mobile phone is connected using auxiliary wire to the DTMF Decoder circuit. The output of DTMF decoder for every key pressed is obtained according to the frequency table explained above in Fig.2. In the above circuit diagram, at Q1, LIGHT is connected, at Q2 FAN is connected and at Q3 TV is connected through relay driver IC. Q4 is kept open. When key1 is pressed at the dial pad of mobile phone, DTMF decodes this tone and generates a digital output given in the frequency table. Now according to given output in table, Q1 is HIGH and Q1 is connected with LIGHT, so LIGHT turned ON. If LIGHT is to be turned OFF, then key number 8 is pressed at the dial pad of mobile phone. When key number 8 is pressed, Q1, Q2 and Q3 will become LOW and Q4 will remain HIGH. As Q4 is left open so the output of Q4 doesn’t have any effect on loads. The status of Q4 whether it will be HIGH or LOW, it doesn’t change the operation of loads. The status of Q1 is LOW which will force LIGHT to turn OFF. When key number 8 is pressed, all Q1, Q2 and Q3 are LOW, so other appliances are also not get affected. To turn ON FAN, key number 2 is pressed because by pressing key2 only Q2 is activated and rest of outputs will remain in LOW condition. The load FAN is also turned OFF by pressing key number 8 in the dial pad of mobile phone. The load TV is turned ON by pressing key number 4 and to turn OFF TV, key number 8 is pressed. If all appliances are to be turned ON, then a key number 7 is pressed and key number 8 is pressed to turn OFF all the appliances. If LIGHT and FAN is to be turned ON simultaneously, then a key number 3 is pressed according to the table. Now, if TV is to be turned ON, then key number 7 is pressed instead of key number 4 as key 4 will turn OFF other appliances. If TV is to be turned ON without turning OFF previous appliances, then only key number 7 is pressed. If only LIGHT is to be turned OFF, then a key number 6 is pressed. All four appliances are controlled according to table output.

IV. EXPERIMENTAL RESULTS

DTMF based home automation system has been tested and successfully implemented. The prototype of DTMF based home automation system has been built and it is shown in Fig.5.

Fig. 5. Home Automation System

V. ADVANTAGES, LIMITATIONS AND APPLICATIONS

Home automation system is highly sensitive system. This system works with any mobile phone from anywhere. This system is of low cost and having reliable arrangement. Home automation system is durable and efficient. Home automation system deals with some drawbacks. It does not work properly in weak network areas. It will become inefficient in noisy surroundings. The loads connected to Home automation systems are limited as these loads are connected to DTMF decoder through relay driver IC ULN2003. DTMF based Home automation system are widely used for the control of Home appliances, Hotel lights or fans, shops and showrooms appliances and industrial appliances.





VI. CONCLUSIONS

DTMF based home automation system has been tested and successfully implemented. This system is highly reliable and efficient for old aged and handicapped person. This system has a wide scope development and modification. The main control system is designed which implements the wireless technology which provides remote access from android phones. This design provides the status of existing electrical switches whether it is turned ON or OFF. This system uses DTMF technology which generates DTMF tone according to key pressed in dial pad of android mobile phone.

REFERENCES

1. Subhankar Chattoraj: "Smart Home Automation based on different sensors and Arduino as the master controller”: International Journal of Scientific and Research Publications, Volume 5, Issue 10, October 2015.

2. Cuihong Liu, WentaoRen, Benhua Zhang, ChangyiLv: "The application of soil temperature measurement by LM35 temperature sensors": Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology.

3. Robert Sowah, Abdul R. Ofoli, SelaseKrakani, and Seth Fiawoo: "Hardware module design of a real-time multi- sensor fire detection and notification system using fuzzy logic": 2014 IEEE Industry Application Society Annual Meeting.

4. Robert A. Sowah, Abdul R. Ofoli, SelaseKrakani, Seth Fiawoo:“Hardware Design and Web-based Communication Modules of a Real-time Multi-Sensor Fire Detection and Notification System using Fuzzy Logic" :IEEE Transactions on Industry Applications Year: 2016, Volume: PP, Issue: 9.

5. Rozita Teymourzadeh,Salah Addin Ahmed,Kok Wai Chan and Mok Vee Hoong , “Smart GSM Based Home Automation System”, 2013, IEEE Conference on Systems, Process & Control, Kuala Lumpur, Malaysia.

6. Mahesh.N.Jivani, “GSM Based Home Automation System Using App-Inventor for Android Mobile Phone”, 2014, International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, Vol. 3(9), pp. 12121-12128.

7. https://www.electronicshub.org/mobile-controlled-home-appliances-without-microcontroller 8. https://www.arduino.cc/en/Main/arduinoBoardUno


https://www.electronicshub.org/mobile-controlled-home-appliances-without-microcontroller

https://www.arduino.cc/en/Main/arduinoBoardUno

home automation system using android … · dtmf based home automation system are widely used for...

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