Electronic Card-lock System

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ELECTRONIC CARD-LOCK SYSTEM By Mohd. Ansari Ajmal Shahul Hameed M K Visakhan C

description

a simple but practical appliance security system

Transcript of Electronic Card-lock System

Page 1: Electronic Card-lock System

ELECTRONIC CARD-LOCK SYSTEM

By

Mohd. Ansari Ajmal

Shahul Hameed M K

Visakhan C

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FUNCTION

• To lock important electronic/electrical appliances.

• By the insertion of appropriate cards, appliances can be turned ON.

• Turn OFF upon removal of the card.

• Can switch up to 7 appliances.

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FEATURES

• HIGH SECURITY

• OPERATION IS SIMPLE AND USER-FRIENDLY

• COMPACT DESIGN

• ENSURES SAFETY OF USER

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DESIGN

BLOCK SCHEMATIC DIAGRAM

SENSOR ARRAY BUFFER

RELAY

DRIVER RELAYSEXTERNAL APPLIANCES

LIGHT SOURCE

INSIDE THE EQUIPMENT

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DESIGNSENSOR ARRAY +5v

GND

O/p 1

O/p 2

O/p 3

O/p 4

O/p 5

O/p 6

O/p 7

TO BUFFERSENSOR UNIT

+5V

GND

O/p

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DESIGNBUFFER

+5V

GND

IN1IN2IN3IN4IN5IN6IN7

ENABLE

OUT1OUT2OUT3OUT4OUT5OUT6OUT7

FROM SENSORS

TO

RELAY DRIVER

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DESIGNRELAY DRIVER

OUT1

OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

Vcc = 12V

IN1

IN2

IN3

IN4

IN5

IN6

IN7

GND

ULN 2003

FROM BUFFER

TO RELAYS

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CIRCUIT DIAGRAMSENSOR ARRAY

BUFFER RELAY DRIVER

RELAYS

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WORKING

DIRECTION OF INSERTION

Punched hole

CARD LAYOUT

POSSIBLE POSITIONS OF HOLES NOTCH

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WORKING

EXAMPLES OF CARDS

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WORKING

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PCB LAYOUT

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PRODUCT LAYOUT

Power Switch

Status LEDs

Slot