password based door locking system using 8051
Post on 12-Jan-2017
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PASSWORD BASED DOOR LOCKING SYSTEM USING 8051 MICROCONTROLLER
PRESENTED BY…….. PRASHANTMANGLESHWARMRADULNARENDRAEC-B 4th YEAR
MENTOR:SHIV SIR
CONTENTS INTRODUCTION HARDWARE REQUIRED SOFTWARE REQUIRED CIRCUIT DIAGRAM STEPPER MOTOR CRYSTAL OSCILLATOR VOLTAGE REGULATOR MOMENTARY SWITCH LCD ADVANTAGES APPLICATIONS
INTRODUCTION A microcontroller based Door locker is an
acecess control system that allows only authorized persons to access a restricted area.
The system has a Keypad by which the password can be entered through it. When the entered password equals with the password stored in the memory then the gate gets open. If we entered a wrong password then the Alarm is switched on.
HARDWARE REQUIREMENTS: AT89C51 CONTROLLER 8051 PROGRAMMING BOARD PROGRAMMING CABLE DC BATTERY OR 12V,1A ADAPTOR 4×3 MATRIX KEYPAD 16×2 LCD 5V RELAY DC MOTOR BC 547 TRANSISTOR 10K, 330 Ω RESISTOR (1/4 WATT) 10UF ELECTROLYTIC CAPACITOR 33PF CAPACITORS – 2 12MHZ CRYSTAL POT 10K (1/4 WATT) – 1 CONNECTING WIRES
Software Requirements: Keil compiler Flash magic Proteus
CIRCUIT DIAGRAM-
STEPPER MOTOR
A stepper motor or step motor or stepping
motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor.
CRYSTAL OSCILLATOR
A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency.
VOLTAGE REGULATOR
A voltage regulator is designed to automatically maintain a constant voltage level.
Depending on the design, it may be used to regulate one or more AC or DC voltages.
MOMENTARY SWITCH
In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.
The mechanism of a switch may be operated directly by a human operator to control a circuit.
LCD
A liquid-crystal display (LCD) is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly.
Advantages: This project provides security Power consumption is less Used commonly available components Project is simple and easy
Applications: This simple circuit can be used at residential
places to ensure better safety. It can be used at organizations to ensure
authorized access to highly secured places. With a slight modification this Project can be
used to control the switching of loads through password
Thank You
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