Design of 2 Car Elevator Controller System using FPGA

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Design of 2 Car Elevator Controller System using
FPGA

• Project Proposal Presented by
• Suraj MehraArun NagariElectrical Computer
  EngineeringUniversity of TennesseeKnoxville, TN
  37996-2100

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Design Flow
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System-Level Block Diagram
6 Ways
Hall_call
8 Ways
2 Ways
Car_Call
Door_control
ASIC
Clock
Car_call_request
Hall_car_request
Mode
Door
LED 1
LED 2
Car_1
Car_2
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Priorities of Operation for Elevator

• First Priorities
• Select Elevator with same request already.
• Elevator at the floor where requested is made.
• Second Priorities
• Select Elevator which is not moving.
• Select Elevator which is nearer to the requested
  floor.
• Third Priorities
• Both Elevators should maintain its direction.
• Select Elevator which is at shorter distance.

Elevator
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State Diagram

• Stages-
• ST1- Car is on or requested for 1st Floor
• ST2- Car is on or requested for 2nd Floor
• ST3- Car is on or requested for 3rd Floor
• ST4- Car is on or requested for 4th Floor
• BP2- Bypass Stage at 2nd Floor
• BP3- Bypass Stage at 3rd Floor1

ST3
BP3
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Summary

• Overall system is divided into two parts
• Basic Design (One Car)
• Advanced Design (Two Car)
• There are four different CAR-CALL request (for
  each car) i.e request made inside the CAR.
• There are six different HALL-CALL requests i.e
  request made outside the CAR.
• There are two different states to indicate door
  is open or closed.
• Three priority level for optimal system
  performance.
• System supports multiple requests.