SAI SPURTHI INSTITUTE OF TECHNOLOGY (An ISO 9001:2011 Certified Institution & Accredited by NAAC-UGC) DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING 

AUTOMATION OF LOAD USING MOBILE PHONE

MAIN PROJECT REVIEW

ON

PRESENTED BY:

CH.D.S.S.CHARAN (12C51A0214) J.RAVI (12C51A0224) B.VEERENDRA BABU (12C51A0211)

PROJECT GUIDE Mr.A.GOPI M.Tech (PE&ED)

PROJECT INCHARGE HEAD OF THE DEPTMr.V.ASHOK Mr.K.R.K.PRASAD M.Tech (PE&ED) M.Tech(PE)

ABSTRACT This project demonstrates a novel method which enable users to control their home appliances and systems from remote using a cell phone-based interface. To access the control unit, the user should send an authentication code along with the required/desired function/action to his/her home control system via Global System for Mobile communication(GSM). Upon being properly authenticated, the cell phone-based interface at home (control unit) would relay the commands to a microcontroller that would perform the required function/action, and return a function completion code that would be sent to the source of the original command (user’s cell phone).

BLOCK DIAGRAM

AT89S52

Micro Controlle

r

Display Unit

Power supply unit

GSMmodem

Relays

Appliances

RELAYDRIVER

Serial driver

CIRCUIT DIAGRAM CIRCUIT DIAGRAM

POWER SUPPLY

EQUIPMENTS

• Microcontroller based control system with regulated power supply

• Relay driver• Gsm module• Voltage regulator• mobile phone

S.NO COMPONENT RANGE/TYPE QTY COST(RS/-)

1 Transformer 12-24 V 1 1002 LCD 5V(16X2) 1 1503 GSM 3.6-4.6(SIM900) 1 20004 7805 7- 35 V 2 305 7812 14-35 2 306 A989S52 4.5-5.5V 1 807 RELAYS 12V(SPDT) 6 2008 ULN2003 12-35V 1 259 CAPACITOR 1000 UF/25V 1 1010 CAPACITOR 10 UF/50V 5 3011 MAX232 4-5V 1 3012 DIODE IN4007 5 1013 LED 1.5-3.5V(5mm) 5 1014 40 Pin Base 1 2015 16 Pin Base 2 2016 dot pc board 4x4 4 20017 connectors 10 20018 Resistors 1k 10 2019 TOTAL 3165

COMPONENTS & COST

RELAY :

•A relay is used to isolate one electrical circuit from another.

• It allows a low current control circuit to make or break an electrically isolated high current circuit path.

GSM MODULEGSM is the most popular standard for mobile phones in the world. It is based on TDMA (time division multiple access) technology.

We are using the SIMCOM 900, a GSM modem . This is a powerful GSM/GPRS Terminal with self-contained unit.

This has standard connector interfaces and has an integral SIM card reader. The modem has a RJ9 connector through which a speaker and microphone can be connected allowing audio calls being established, but this feature is not utilized in this project as only data transfer is needed.

CONCLUSION

Mobile phones have become an indispensable part of our life. Our system uses a controller and a cellular phone for its operations. The systems can be used as a test bed for any application that requires on-off switching based applications. Wireless controlled home appliances in the comforts of any environment will revolutionize our way of living. Controlling appliances remotely by a cell phone will one day become a reality and one should give thanks to the capabilities of HACS. HACS might one day become a standard system in the new homes to come.

THANK YOU

POWER SUPPLY