ELEVATOR CONTROLLER USING FPGA

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ELEVATOR CONTROLLER USING FPGA

• Depeng Yang, Saijun Zhang
• Electrical Computer Engineering
• University of Tennessee
• Knoxville, TN 37996-2100

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System requirements

• The aim of the microelectronic system designed
  for this project is to control an four floors
  with 2 cars elevator
• The policy of elevator controller is
• 1.Car 1 will be active if it is available
  Car 2 is used if and only if Car 1 is not
  available.
• 2.The cars keep its direction as long as
  possible

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System Diagram
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System diagram explanation

• Clock Divider provides several different clock
  frequencies out of the outer 25Mhz clock.
• State Machine Controller is a Mealy finite
  state machine to determine the movement of the
  car.
• LEDs Driver and Segs Display control LEDs and
  the seven segment LEDs respectively for display

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INPUTS

• Input Four buttons and eight switches
• Four buttons represent the input button in either
  car1 or car2 decided by one switch
• Six switches represent the demands of customers
  in different floors
• The other two switches one indicates the end of
  input, that is to close the door. The other is to
  choose which car has the requirement when two
  cars stop at the same floor

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OUTPUTS

• Output four Segs and two LEDs
• Two Segs mean the floor of car 1 and car 2
  respectively.