Elevators

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Elevators

• Software Engineering
• 2004/2005

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Hydraulic Elevators
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Cable Elevators

• 1 Control system
• 2 Electric Motor
• 3 Lifting wheel
• 4 Counter-weight
• 5 Rails

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Security Systems

• Elevator cables
• Governor
• If speed is faster than threshold, stop elevator
• Rails
• Electromagnetic rails
• Automatic breaking systems near the bottom and
  top of elevator shaft
• Shock absorbing system, at the bottom

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Controlling elevator movement

• Computer is responsible for
• Managing user request
• Knowing where the floors are
• Knowing the cabin location
• Managing movement policy
• Cabin
• Weight sensor
• Automatic doors

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Abstracting a few main components
Motors controller
Alarm
Elevators controller
Request Manager
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Adding more precision to the abstraction
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Your mission

• You represent a company developing parts for
  elevator systems
• You will be responsible for the development of a
  major component in an elevator control system
• You will be competing in a market with several
  companies producing alternative components for
  the same task
• You will be involved in standards committees

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To learn more about elevators

• science.howstuffworks.com