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INTRODUCTION

The objective of Intelligent Car Parking

System is to progressively reduce the

demand of car parking and fast retrieval of

car.

Prior Projects Employed For Parking are:

Using 8051 microcontroller.

Using Zigbee Technology.

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PIC

MICROCONTROLLER

PIC16F877A

Regulated

Power Supply

16x2LCD Display

IR Sensors

RFIDCar

Sensors

Stepper

motor

Stepper motor

Drive

Floor

Interrupt

switch

Passive

RFID Tag

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StartPlace the RFID Tag near the RFID Reader

Read the RFID Tag using RFID readerIs Tag

authorized ?Display as ACCESS

DENIED on LCD

DISPLAY

YesNo

Is the Tag placed

near RFID Reader ?

A

No

Yes

Is the lift busy?

Glow the RED LED

indicating that thelift is busy

Yes

No

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Find the empty parking space by taking feed back from

the Infra-Red Sensors placed in parking area and displaythe name given to the parking space on the LCD ScreenOpen the gate and allow the vehicle to enter the parking area

A

Is the parkingspace available in

ground floor ?

Do not makeuse of the lift

Indicate the presence of vehicle on the lift by sending the

feedback from Infra-Red sensor mounted on the lift

Yes

No

B

Is the vehicle

detected on the

lift?

No

Yes

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Wait for the feedback from IR sensor mounted on the lift,

indicating that the vehicle has moved out from the lift

Rotate the stepper motor in clockwise direction, so that the liftgoes back its original position i.e., ground floor

Stop

B

Rotate the stepper motor in anti-clock wise direction sothat the lift connected to the belt of stepper motor moves

in upward direction i.e., to the desired floor

Is the vehicle

detected on the

lift?

No

Yes

Wait for 5 seconds

Wait for 5 seconds

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StartPress the interrupt switch

Is the switch

pressed?

B

Is the lift busy?Glow the RED LEDindicating that the

lift is busyIdentify the floor, where the key has been pressed

Is the key

pressed fromground floor?

Do not makeuse of the lift

Yes

Yes

Yes

No

No

No

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Wait for the feedback from IR sensor mounted on thelift, indicating the presence of vehicle on the lift

B

Rotate the stepper motor in clockwise direction, so that the liftgoes back its original position i.e., ground floor

Rotate the stepper motor in anti-clock wise direction so

that the lift connected to the belt of stepper motor movesin upward direction i.e., to the desired floor

Stop

Is the vehicle

detected on the

lift?

No

Yes

Wait for 5 seconds

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Features Of PIC16F877

8K bytes of Flash Memory

368 bytes of Data Memory

256 bytes of EEPROM

33 I/O Pins,5 I/O ports(A,B,C,D,E)Harvard Architecture

20MHz Operating Speed

3 Timers and also with Watch Dog TimerPower on Reset

Power up timer

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PIC Pin Diagram

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Advantages Of PIC microcontroller

Reliability

Performance

Power Consumption

Memory

Instruction Set Simplicity

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