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A Web of Things to
Reduce Energy Wastage
Markus Lanthaler
Graz University of Technology
Mining




         Markus Lanthaler – Graz University of Technology
Fly-In, Fly-Out




                  Markus Lanthaler – Graz University of Technology
Mining Work Camps




                    Markus Lanthaler – Graz University of Technology
Problem

• Supply of important basic amenities is
  costly

• Provision of energy particularly expensive
  (diesel generators)

• Mining camp of 1,500 housing units:
  > $1.7 million/year just for energy

• Emissions: > 10,000 metric tons of CO2

                               Markus Lanthaler – Graz University of Technology
Problem

• Residents don’t pay themselves: lot of
  wastage

• Keep rooms cooled at 18°C for whole day
  just to make sure it’s cold on return
  (outside > 40°C)

• TVs are not turned off



                               Markus Lanthaler – Graz University of Technology
Reduce Wastage by Automation




 Monitor energy    Intelligently control
consumption and   appliances to reduce
  environment             wastage




                        Markus Lanthaler – Graz University of Technology
Requirements

• Reuse existing infrastructure
  (brownfield project)

• Keep installation simple (and thus cheap)

• Remote control and maintenance

• Do not interfere with the
  resident’s interests


                                  Markus Lanthaler – Graz University of Technology
Architecture

                                 Logging and
                                 control server

  RESTful
  services
                          Internet
                       (or local network)




             housing                        sensor                smart
                       controller
             unit                           actuator              meter

                                                       Markus Lanthaler – Graz University of Technology
Proof of Concept
                   Arduino Mega-based
                         platform

                                Sensor & actuators




       Ethernet
        shield

       Arduino

                           Markus Lanthaler – Graz University of Technology
Sensors and Actuators
                Passive Infrared           RFID reader
                Sensor (Motion)


                    IR emitter
                                      Relay
                                   (door lock)



                                        Temperature and
Reed switches                           humidity sensor




                                                 Markus Lanthaler – Graz University of Technology
Field Trial Evaluation

• Deployed in a remote housing site in
  Karratha, Western Australia

• Run from April 2011 till November 2011

• Used simple heuristics
  – resident at work: set A/C to 30°C
  – cool room down before resident comes back



                                Markus Lanthaler – Graz University of Technology
Power Consumption Breakdown


               Air Conditi oning
                    77,8%




                                   Hot Wat e r
     Other (T V, fridge,etc.)       System
             10,9%                  11,4 %
                                      Markus Lanthaler – Graz University of Technology
Power Consumption
  16 kWh                                                     32 °C

  14                                                         28

  12                                                         24

  10                                                         20

  8                                                          16

  6                                                          12

  4                                                          8

  2                                                          4

  0                                                          0
  04/2011        06/2011      08/2011   10/2011

           manage d        unmanage d    Te mper atur e

                                          Markus Lanthaler – Graz University of Technology
Savings
  100%                                                               32 °C

   90%                                                               28

   80%                                                               24

   70%                                                               20

   60%                                                               16

   50%                                                               12

   40%                                                               8

                                                                     4

   0%                                                                0
    04/ 2011    06/ 2011       08/ 2011        10/ 2011

               Power savings              Te mpe r atur e
                                                 Markus Lanthaler – Graz University of Technology
Conclusions

• Achieved substantial savings

• Reduced consumption by roughly 50%
  – $500,000/year
  – 1,000-3,000 metric tons CO2




                                  Markus Lanthaler – Graz University of Technology
Outlook




          Markus Lanthaler – Graz University of Technology
Thank You!   Markus Lanthaler
Questions?   Markus.Lanthaler@student.TUGraz.at
                     @MarkusLanthaler