POWER EFFICIENT ESCELATOR

FROM:-PARAS AGARWAL

EC(FINAL YEAR)

CONTENT-:WHAT IS ESCELATORWHAT IS POWER EFFICIENT ESCELATORCIRCUIT DIAGRAMCOMPONENT REQUIREDADVANTAGE

WHAT IS ESCELATOR

An escalator is a moving staircase – a conveyor transport device for carrying people between floors of a building.

The device consists of motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.

Escalators are used around the world in places where elevators would be impractical.

Principal areas of usage include department store ,shopping mall, airport, transit system, convention center, hotels, and public buildings

Basic Specifications

Installation: indoorWorking hours: 15 hours per dayStep width: 600/800/1000 millimetersHorizontal steps: two/threeSpeed: 0.5 meter per secondCapacity: 4500/6750/9000 persons per hourPower supply: AC 3-phase, 50 or 60HZLighting supply: AC single-phase, 50 or 60HZ

WHAT IS POWER EFFICIENT ESCALATOR

>AN ESCALATOR IS MOVING STAIRCASE .

>IT MOVING COUNTINOUSLY EITHER PEOPLE USE IT OR NOT. SO THEIR GREAT LOSS OF THE POWER

TO SAVE THE POWER WE USE TWO SENSOR IN IT AT STARTING AND ENDING POINT MAIN OBJECTIVE TO USE THE SENSOR IS THAT IT NOT RUN COUNTINOUSLY IT RUN THEN WHEN WE WANT TO USE

>WHEN SENSOR SENSE START ESCELATOR WHEN IT STOP SENSING IT STOP THE ESCALATOR

>for escalators, your average shopping mall unit - which has a 7.5 horsepower motor, rises 15 feet, and is kept running 14 hours a day, six days a week - might use about 7,500 kilowatt-hours of electricity in a year.

>An escalator that runs all day and all night in a convention center or hotel - say, a 20-foot-high unit with a 20-horsepower motor - would use roughly 31,000 kWh annually.

>A continuously running escalator of the kind you'd find in airports or subway stations - 35 feet high with a 40 horsepower motor - would use about 60,000 kWh annually.

The amount of energy used and the savings potential

According to A statistics there are 75’000 escalators and moving walks installed in india

• 75% of the escalators are installed in commercial buildings, the remaining 25% being in public transportation facilities.

Situation Energy per year

Current situation 904GWhWith 28% saving potential 649GWhEnergy Saved 254GWh

COMPONENT REQUIREDMICROCONTROLLER 89C51DC GEAR MOTOR 50 RPMNE 555 ICIR LEDPHOTO DIODELM 7805CRYSTOL OSCILLATORVARIABLE RESISTANCE 3KPCBCAPACITORALUMINIUM

MICRO CONTROLER 8951Ø     4 Kbytes of In-System Reprogrammable Flash Memory. Ø     Fully Static Operation: 0 Hz to 24 MHzØ     Three-Level Program Memory LockØ     128 x 8-Bit Internal RAMØ     32 Programmable I/O LinesØ     Two 16-Bit Timer/CountersØ     Six Interrupt SourcesØ     Programmable Serial Channel

IR LEDØ The demodulated output signal can directly be decoded by a microprocessor. Ø The main benefit is the operation with high data rates and long distances.Ø detector and preamplifier in one packageØ size package

DC GEAR MOTOR 50 RPM1. Voltage: 12.0 VDC 2. Output Speed: 50 RPM 3. No-Load output current: =< 50 mA 4. Rotation Output: CW 5. Noise: No Gear Noise 6. Stall output: : Slip Gear, Broken Gear is no allowed

PHOTO DIODEphototransistor, however, is much more sensitive to light and produces more output current for a given light intensity that does a photodiode

LM 7805

The LM78O5 series of three terminal positive regulatorsare available in the TO-220 package and they can deliver over 1A outputcurrent. Although designed primarily as fixed voltageregulators, these devices can be used with external components to obtain adjustable voltages and currents.

PCB

 printed circuit board, or PCB, is used to mechanically support and electrically connect electronic component  using  conductive  pathways, tracks or signal traces  etched from copper sheets  laminated  onto a non-conductive substrate.

CRYSTAL OSCILLATORIt Used To Give A Clock Pulse To Microcontroller I Original Frequency Is 11.0592 MHz BUT WE USE 12 MHz

ADVANTAGE>In India it has been seen that there is shortage of the power

we have design Power and energy efficient escalator

>Reduced electric stress on the motor and electric network;

>Continued monitoring of motor performance improves

>electric efficiency while motor is running Reduced direct kWh reading by 10% to 25%

>Reduced network losses by up to 75% (equaling 5% from kW)

>Reduced reactive energy by 50% (which saves around 2% from kW due to capacitors self losses and harmonics increase)