Group Name: Skynet

Group Members:

• LUT has multiple computer rooms available in 24/7 use. These classrooms have their computers on hibernation all the time they are not in use, which uses power needlessly.
• This issue could be solved using smart solutions.

• A classroom with no power usage when not in use
• The room should still be immediately usable after someone has entered in
• Power usage should fall down to zero when the last person leaves the room

• Calculating power consumed by all idle electronic devices and Recognizing the motion → Turning ON/OFF power supply
• Situational lighting based on Power consumption

• There are ~16 computers in a computer room
• Approx. 1-5 watts power draw per computer in hibernation mode
• Classrooms are not in use most of the day (we could have 12h not in use time)
• 12h*4W*365 = 17520 Wh = 17.5 kWh (1 computer in a year)
• Per computer room 17.5kWh * 16 = 280 kWh in a year
• Only from the computers

• Actual power savings are relatively small
• Emphasis on branding
• One possible solution as a part of green campus idea
• Automatic solution

• Automatic dimming of windows
• Generating some power from sunlight

• Accurately detecting people inside the room
• Using any wall as an interactive surface with a projector
• No need for wall switches, interactions done touching the wall

• Heating times based on classroom use
• System is aware of the school schedule

• X10 was developed in 1975 in Scotland
• Uses power lines to transmit data
• Has been an international standard for home automation for a long time
• Communicates between transmitters and receivers

• RF bursts over power line
• A 1ms burst of 120 kHz is Binary 1 and absence of 120 kHz is Binary 0
• Complete code transmission is 11 cycles
  • Bits are sent in half cycles of the power line (1ms signal on one half cycle)
  • First 2 cycles are a default Start code 1110, which is always the same
  • Next 4 cycles indicate the house code
  • Last 5 cycles represent a Number Code or a Function Code

image: www.x10.com/x10-basics.html

• Uses existing wiring (no need for ethernet or wireless networks)
• Simple to use
• Been around for a long time so there are many compatible devices
• Cheaper than most alternatives

• Noticeable delay
• Possible interference (data byte gaps etc.)
• Provides less functionality than alternatives
• 16 home addresses and 16 unit codes per address so only 256 different addresses

• Open source Perl server for home automation
• Common tasks include switching devices and logging events
• Supports many protocols and devices

• Flexible and extensible
• Built-in regular expressions are useful
• Can be controlled with many devices, such as smartphones
• Very limited English documentation and support

• Presentation:
• Final report: