go to main index know about us who we are and what we are provide ? we provide training on how to reach us send e-mail us
   

 

                PARKING LIFT USING

89C2051.

 

 

 

 

In this project we show that how we use the lift for multi level parking system.

In this project we use ic 89c2051 micro controller to run the lift. 89c2051 is a 20 pin controller from the 8051 family. 8051 family is a 40 pin  ic. In this project we use one dc motor  for the lift. Few reed sensor to monitor the lift and few sensor to check the availability of the space.

In this lift when we start the lift then we use start switch. After pressing a start switch dc motor start and when it reaches to the first floor then firstly we sense the floor by reed sensor. Reed sensor is magnetic sensor, when  magnet connected to the lift is  near by the reed sensor then reed sensor is activate and provide a signal to the controller. Controller sense the floor position and at  the same time it checks the space position, if the space is there then lift stop automatically otherwise lift go forward to the next floor. In this project we use two floor  and  only two space for the  parking.  We design the lift for only two floor and two sensor, but it is possible to use this system for multi- floor and multi space option.

Here in this project we monitor the floor and space every thing by the reed sensor. So we use magnetic proximity switches to monitor the space  and position of the lift.

We use Dc motor to lift  the base platform of the  lift

DC MOTOR.

Here in this project we use slow speed dc motor with gear box to reduce the speed of the platform. This type of gear motor is getting from the  second hand machine. Supply voltage of this dc motor is  6 to 9 volt dc. As we vary the voltage speed is also vary. Current consumption of dc motor is 200 ma. It is also possible to use a stepper motor. If we use stepper motor then we require a high current supply. Normal stepper motor require a minimum 1 A power supply.

MICROCONTROLLER.

In this project we use micro controller to control the direction of motor with proximity switches and monitor the  space of the  parking. Here in this project we use ic 89c2051 controller to sense all the logic. 89c2051 is a 20 pin member of the main 40 pin controller. We use 89c2051 because here in this project we use only 2 output for motor and control signal is only four. Out of four sensor, two sensor  is for the floor  and two sensor for the space. 89c2051 is a small micro controller with 128 byte of ram and 2 k byte of flash memory.

 

How to program a microcontroller.

For programming purpose we wrote a program in the assembly language and  we use any 8051 assembler to assemble the software .

Block diagram of  car parking lift

 

 

 

 

 

Components used:

 

Item

Qty.

 ID

OPTOCOUPLER

2

IC 817

mcU

1

IC 89C2051

CRYSTAL

1

12 MHZ

CERAMIC

2

27 PF

CONNECTING WIRES

 

 

IC BASE

1

20 PIN

 

1

16 PIN

LEDS

5

RED 15 MM

REGULATOR

1

7805

CAP

1

1000 MICROFARAD

TR

2

TR548

 

2

TR 558

MICRO SWITCHES

2

PUSH TO ON

REED SENSOR

6

MAGNETIC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Applications:

 

  1. used for automatic carparking in advance system
  2.  for automation in industry caryong raw material like machines, machines parts
  3. in building materil industry for carrying cement etc.
  4. for lift purpose

 

 

 

 

 

 

 

 

 

Bibliography:

For steppr motor

www.steppermotor.doc

 

for 89c2051

http://www.8052.it/download.htm

http://www.rentron.com/at89c205.htm

 

programming

http://www.avocetsystems.com/company/other/predemo.htm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFERENCES :

For steppr motor

www.steppermotor.doc

 

for 89c2051

http://www.8052.it/download.htm

http://www.rentron.com/at89c205.htm

 

programming

http://www.avocetsystems.com/company/other/predemo.htm