SIR VISHVESHWARAIAH INSTITUTE OF SCIENCE&TECHNOLOGY ANGALLU, MADANAPALLI-517325

DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING

A PROJECT ON

PASSWORD BASED CONTROL SYSTEM

PRESENTED BY

A.SOWMYA 10W51A0202K.BHAVANA 10W51A0224M.RAMESH 10W51A0239Y.NAGA JYOTHI 10W51A0257

V.MADHUSUDHAN NAIDU 11W55A0210

Under the Guidance of Sri T.MUNI PRAKASH, M.Tech,

Assistant professor Department of Electrical & Electronics Engineering

CONTENTSMain ObjectiveKit Components ExplanationBlock DiagramWorking ProcedureAdvantagesApplicationsConclusion and Future scopeReferences

MAIN OBJECTIVE

The project is designed to trip the circuit with the help of a password.

This control system provides a solution , which can ensure the safety of line man.

The system is fully controlled by the 8052 microcontroller (where password is saved initially)and by an IC.

Hardware RequirementsTransformerBridge RectifierVoltage RegulatorMicro ControllerEEPROMTRIACKeypadLCD screen

TRANSFORMER

STEP UP TRANSFORMER

STEP DOWN TRANSFORMER

BRIDGE RECTIFIER

VOLTAGE REGULATOR

A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level.

MICROCONTROLLER

PIN DIAGRAM OF 8052

TRIACThe TRIAC is a three

terminal semiconductor device for controlling current.

It is effectively a development of the SCR or thyristor, but unlike the thyristor which is only able to conduct in one direction, the TRIAC is a bidirectional device.

KEYPADKeypads are the most widely used input devices of the

8052and a basic understanding of them is essential. The keypads are mainly three types:

1) 4*3 keypad 2) 4*4 keypad

3) 4*8 keypad. The keypad used in this project is 4*3 keypad.

LCD DISPLAY

LCDs are the most widely used output devices of the 8052.

LCD stands for Liquid Crystal Display.LCD is finding wide spread use replacing LEDs.They are used for writing different messages on a

miniature LCD.

BLOCK DIAGRAM

KIT DESCRIPTION & REPRESENTATION

ADVANTAGES It avoids the electrical accidents. Improves lineman safety. Easy of operation. Easy to maintain and repair.

APPLICATIONS Can be used any where in the substation to trip

the circuit. Most useful to operate in the public areas.

CONCLUSION

Security is prime concern in our day-to-day life. Every one wants to be as much as secure as to be possible.

This system provides a new approach to secure the life of a lineman.

The circuit can be tripped without any fail and load can also be controlled when required.

FUTURE SCOPE

The project can be interfaced with the GSM modem for the remote control of circuit breaker via SMS. So the circuit breaker can, not only operate from the substation, but also from distance through wireless communication.

SCADA can also be implemented to know where

the fault is occurred in the system directly and so a linemen can directly locate the fault location and can rectify it.

ANY QUERIES?