door lock through telephone using

8/3/2019 Door Lock Through Telephone Using

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DOOR LOCK THROUGH

TELEPH

USING

DTMF DECODER

Under the guidance of

Mr.D.KUMAR

P.HARSHA VARDHAN 08J81A0416

S.NAVEEN REDDY 08J81A0430

Submittedby

1


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INTRODUCTION

In this age of digital technology, every deviceand its operation has become digital based.Now with digital based door lock systems, it iseasier to control the door movement lock orunlock the door of the car or house. This digital

door entry system is in fact controlled of the caror house. The new automated door locksystem does not need a key to by cell-phonewhich is actually performing the role of remoteover here. The keyless door remote is an

electronic circuit based device. This remotetransmits DTMF signals via air to anotherdevice of the system installed in the car door orhouse door..


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COMPONENTS

MOBILE

CRYSTAL CIRCUIT

RESET CIRCUIT

8051 MICRO CONTROLLER ULN DRIVER

STEPPER MOTOR


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BLOCK DIAGRAM

8051MICRO

CONTROLLER

MOBILE

CRYSTALCIRCUIT

RESETCIRCUIT

ULNDRIVER

STEPPERMOTOR


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SCHEMATIC DIAGRAM


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POWER SUPPLY

STEPDOWN

TRANFORM

BRIDGERECTIFIER

POSITIVECHARGE

CAPACITOR

POSITIVEVOLTAGE

REGULATORIC 7805

LPF

As we all know any invention of latest technology cannotbe activated without the source of power. All the electroniccomponents starting from diode to Intel ICs only work with

a DC supply ranging from _+5v to _+12. we are utilizingfor the same, the most cheapest and commonly availableenergy source of 230v-50Hz and stepping down ,rectifying, filtering and regulating the voltage.


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MICRO CONTROLLER(8051)AT89S52

Features:Endurance: 1000 Write/Erase

Cycles 4.0V to 5.5V Operating

Range Three-level Program

Memory Lock 128 x 8-bit Internal RAM


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VOLTAGE REGULATOR 78XX:

FEATURES: Output Current of 1.5A

Output Voltage

Tolerance of 5%

Internal thermal overload

protection


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DC MOTOR


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LIGHT EMITTING DIODE (LED)


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Color of L.E.D

LED's that emit differentcolors are made of different

semi-conductor materials,and require different

energies to light them


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The color of an LED isdetermined by the

semiconductor material, notby the coloring of the

'package' (the plastic body).LEDs of all colors are

available in uncoloredpackages which may bediffused (milky) or clear

(often described as 'waterclear'). The colored

packages are also availableas diffused (the standard

type) or transparent.


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AT89C51

The 89c51 has threevery general types of

memory The memorytypes are On-ChipMemory, External Code

Memory, and ExternalRAM


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On-ChipMemory


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SOURCE CODE

It is possible to create thesource files in a text editorsuch as Notepad, run the

Compiler on each C sourcefile, specifying a list ofcontrols, run the Assembleron each Assembler source

file, specifying another list of

controls, run either the LibraryManager or Linker (again

specifying a list of controls)and finally running the Object-

HEX Converter to convert theLinker out ut file to an Intel


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PROLOAD

Proload is software which accepts only hexfiles. Once the machine code is converted intohex code, that hex code has to be dumped into

the microcontroller and this is done by the

Proload.


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PROGRAMMING SOFTWARE


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DUMPING OF PROGRAM


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Overall view of thekit:


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QUERIES..???


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Thank you

door lock through telephone using

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