Elevator Project Description

1
Elevator Project Description

• Dr. S. Ahmadi
• ECE 002

2
Project Description

• Students will build a mock elevator for a 2 story
  building and create a program to control it.
• The basic blocks will be elevator car, elevator
  shaft, digital sensors, analog sensors.
• The elevator and elevator shaft will be made of
  legos.
• The elevator car will be powered using the motors
  from the lego kit.
• Analog Sensors will be used to determine when the
  elevator has reached a given floor.
• Digital Sensors will be used to determine if a
  customer is calling the elevator to a given
  floor.
• The students will use the handyboard to control
  the motors and sensors to operate the elevator
  and program the device using Interactive C.

3
Graphical Representation/Animation
Motor 1
String attached to gear Lowers/raises elevator car
2nd Floor Analog Sensor 3
3
2nd Floor DIGTIAL Sensor 8
2nd Floor
1st Floor DIGTIAL Sensor 7
1st Floor Analog Sensor 2
2
1st Floor
4
Flowchart for Elevator Algorithm (Page 1 of 2)
A
Listen for call
(loop)
Has a call arrived?
N
Y
Y
Is elevator on 2nd floor?
Is elevator on 1st floor?
Is call from 1st floor?
Y
N
Y
N
Turn on elevator motor going down
(loop)
Has elevator reached 1st floor?
Turn off motor/ Apply Brakes
N
Y
Go to Page 2
5
Flowchart for Elevator Algorithm (Page 2 of 2)
A
From Page 1
Return back to circle A on page 1
Y
Is elevator on 1st floor?
Is elevator on 2nd floor?
Is call from 2nd floor?
Y
N
Y
N
Turn on elevator motor going up
(loop)
Has elevator reached 2nd floor?
Turn off motor/ Apply Brakes
N
Y
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