Microcontroller Based Lift System

Microcontroller Based Lift System

MICROCONTROLLER BASED LIFT SYSTEM

Jayshree sahu*Dr Amita Mahor**Dr S.k.sahu***

*NIIIST Bhopal M.P**NIIST Bhopal M.P.

*** Neelam collegeof engg. &Technology Agra

• If push button 2 inside the lift=on,the lift is not in the position 2, lift comes to 2

• If push button 2 outside the lift=on,& the lift is not in the position 2,lift comes to 2.

• If push button 1 outside lift =on& the lift is not in position 1 lift comes to 1

  SENSOR SWITCHES	MICOCON TROLLER AT89C52	L C D

  BLOCK DIAGRAM

  power

  ABSTRACT-This paper presents the microcontroller based lift system using microcontroller chip AT89C52 based on messege scheduling which basically belongs to data based system in which change in one operation is visible to other concurrent operation ,in which user can programme each set by entering no of series of text date time etc in data base system which can be performed on the priority basis.

  MOTOR DRIVER CHIP

  L293D

  MOTOR

  INDEX ITEM-Introduction Block diagram,circuit diagram,circuit description,algorithm

  INTRODUCTION-Conventional lift system based on elevated control system which has no of disadvantages as large no of cables ,risk factor,complicated,less intelligent, uneconomical.But modern Distributed elevated control system is in intelligent economical system which provide all above reduced disadvantages.

  3 recent innovations include permanent earth magnet motors, machine room less, rail mounted gearless machine aned microprocessor controls.

  METHODOLOGY

  Based on plate monitoring and control

  Floor 2

  lets understood with an example consider floor 1 & 2

  lift

  Floor 1

  Based on sensor and switch polling method in which observation of changes made over switches done by sensors through messege scheduling.

• microcontrollerAT89C52,5.5V,16MHZ,Pr ocessed billions of instructions per cycle per second

• Motor driver chip L293D ,Intetfacing between lift and microcontroller,16pinIC runs on 5v dc.

• Sensors and switches-reed type,.25w power, 0-16 AT.

• Crystal oscillator-11.059mhz for serial communnication.

• DC- Motor -1W, Rectifier-IN-4007

  Then regulator IC7805 sends the +5Volt supply to all the circuits, which will start the system.

  Automatic lift is designed by using microcontroller AT89C52.220 Volt ac power is supplied to step down transformer, which again supply 12Volt ac power to rectifier through diode which convert the ac power supply to dc power.

  After the system is on, firstly it will check the position of the lift,if the lift is on ground, then it will start the motor due to which movement of lift is start Lift will remain at standby mode until new switch is pressed .

• Step-1 Initialize the controller

• Step-2 Initialize the LCD.

• Step-3 port 1 as I/P port.

• Step -4 Confirm port 3 as O/P port.

• Step-5 Take the I/P from Switches for required floor.

• Step-6 Sense the required floor through the sensor and stop the lift at that floor.

• Step-7 Repeat from step

  The Model is Successfully Run with desired O/P

  Plateform monitoring and controlled message schedu- ling data base logic is successfully performed with an elevator

  Lift moved in upward and downword direction with closing and opening of door at the desired floor.

  Thereby removing earlier Non-Linearity presents between the arms arrangement due to sprocket and chain mechanism.Thus sprocket and chain mechanism are completely removed.

  In Embedded system.

  Security system baesd on space vector modulation signal.

  Mapping of input vaiables through fuzzy logic the microcontroller makes decision for what action to take based on PLC method.

  Further scope in Programmable Logic Controller Design,Operator Console Board may be used for display and keypad design.

  REFERENCES

  IEEE Expo 2011-Internal Elevator and Escalator Expo

  Microchip PICC Tutorial. Spackling Tutorial.

  Arm Cartox-A Series-High performance for

  URE

  open operating system.

  SCOPE

  OLX Classified.

  Electronics for you ( Oct. 2004) http://www.atmel.com http://www.electronics4u.com http://www.ttransenergic.co.au

  Microprocessors And Interfacing(

  Programming & Hardware)-Douglas V.Hall Vedam Subrahmanayam- Power Electronics.

  Alberto Sangiovanni-vincentalli, IEEE microelectron,. (May 2003)8-18 .

  Chris Herring,IEEE microelectron(Nov 2000)45-51.

  Todd D Morton,Embedded

  microelectronics,(prantice Hall inc New Delhi India) ,2001.

  Mayke Predco,Hand book of Microcontroller (MC Graw Hill,co,USA)1999.

  BIBLIOGRAPHY

  • 8051 MICROCONTROLLER and embedded system by ali maizidi,rolin d mekinly,Denny carsey.pearson Education..Edition 2.

  • Advanced microcontroller application by Jarice mazidi,Gillirpe maizidiPearson education.