1. MODULE 1: INTRODUCTION SUMMER CHALLENGE Electrical Engineering: Smart Lighting Michael Rahaim, PhD Candidate Multimedia Communications Lab Smart Lighting Engineering Research Center Boston University mrahaim@bu.edu

2. Boston University Slideshow Title Goes Here Module I: Introduction to EE Overview  Welcome!  Introductions  Course Structure and Objectives  What is Electrical Engineering?  Devices, Communication, Networks  Lighting and Light Emitting Diodes  Visible Light Communication (VLC) 2 07/07/2014

3. Boston University Slideshow Title Goes Here Module I: Introduction to EE Introductions  Instructor: Michael Rahaim (mrahaim@bu.edu)mrahaim@bu.edu  Teaching Assistants  David Miller  Alexandra Miller-Browne  Benjamin Moll  Janessa Pettway  Kevin Smith  Students… (That’s you…)  Introduce yourselves!  Share 2 facts about yourself  Remember what is said! (We will come back to this later) 3 07/07/2014

4. Boston University Slideshow Title Goes Here Module I: Introduction to EE Introductions  The Multimedia Communications Lab (MCL)  Primary Focus: “Ubiquitous distributed computing.”  Various data communication techniques for a variety of content.  The Smart Lighting Engineering Research Center  10 years $18M+ from National Science Foundation  Core Academic Members  Engineering Light for a “brighter” future! 4 07/07/2014 http://smartlighting.rpi.edu/ http://www.bu.edu/smartlighting/ =

5. Boston University Slideshow Title Goes Here Module I: Introduction to EE Course Objectives  Become familiar with:  The basic electrical components, circuits, signals and tools  Networking and communications concepts  Lighting and Light Emitting Diode (LED) technology  Visible Light Communication (VLC) technology 5 07/07/2014

6. Boston University Slideshow Title Goes Here Module I: Introduction to EE Course Overview  PC Login:.\challengepassword: challenge14!  Course website: hulk.bu.edu/courses/SmartLight/  Course Schedule: 6 07/07/2014 ModuleTopicActivities 1 IntroductionElectrical Engineering, Networks, Data Communication, and Smart Lighting 2 The Rhett BoardOperating the Rhett Board 3 Basic CircuitsInvestigate the operation of resistive and capacitive circuits 4 LEDsLED operation and Electrical Characterization 5 PDs and VLC linksPD Operation, Channel Characterization, and establishing a VLC link 6 The Smart Lighting Board PCB base VLC Transceiver assembly Assignment: Presentation Topic Decision 7 Analog TransmissionInvestigate VLC transmission using analog signals 8 Digital TransmissionInvestigate VLC transmission using digital signals 9 VLC ApplicationsVLC text messages and presentation rehearsal 10 PresentationsStudent presentations

7. Boston University Slideshow Title Goes Here Module I: Introduction to EE Lab Notebooks  Entries:  Name / Group Members Names  Date of Entry  Experiment overview & hypothesis  Sketches of experimental setup  Measurements  Calculations  Results & observations  Open questions 7 07/07/2014

8. Boston University Slideshow Title Goes Here Module I: Introduction to EE Exercise I: What is EE? 8 07/07/2014 EE Electronic Circuits Power Systems Control Systems Signal Processing Data Comms Computers Distribution End User Power Grid Generation Hydro Lighting Nuclear Solar Power … Flight automation Automotive Robotics Home Computers Super Computers Embedded Computing Machine to Machine Networks User Devices Cellular WLANs IoT Micro- electronics PCBs Electro- magnetics Digital Logic Analog circuits Digital Signal Processing

9. Boston University Slideshow Title Goes Here Module I: Introduction to EE Networks and Device Communication  What are some devices that communicate?  OSI Reference Model: 9 07/07/2014

10. Boston University Slideshow Title Goes Here Module I: Introduction to EE Physical Layer  How can information pass from point to point?  Audio waves  Light Signals  Attenuation  What happens when the signal is passed over a longer distance?  Signal to Noise Ratio  Interference  What considerations occur with interference in wired links?  What about with wireless links? 10 07/07/2014  Radio Waves  Electrical Signals  Vibrations S N S N S N S N

11. Boston University Slideshow Title Goes Here Module I: Introduction to EE Data Link Layer  Simplex / Duplex  Handshake – Message / Acknowledgement  Full duplex vs half duplex  Broadcasting  Multiple Access  Resource Allocation Techniques: TDMA, FDMA, CDMA  Probabilistic Multiple Access Technique: CSMA  Wireless Considerations  Hidden Node Problem  3way and 4way Handshake 11 07/07/2014 U1U1U2U3U4U1U1U2U3U4 …

12. Boston University Slideshow Title Goes Here Module I: Introduction to EE Network Layer  Nodes, Links, and Graphs  Addressing  If you pass the message, how does the next device know the destination of the message?  Message passing  Full vs Partial knowledge  Internet Protocol (IP)  Wireless Mesh Network  Fully wireless networks also use routing concepts.  Small conversations can occur simultaneously with minimal interference! 12 07/07/2014

13. Boston University Slideshow Title Goes Here Module I: Introduction to EE Transport Layer  Maximum Transmit Unit (MTU)  Packets have a maximum size limit.  Destination node often needs to know how many packets to expect.  Transport Layer also handles ordering of packets.  Handshaking  Sliding window (also used in the Data Link Layer) 13 07/07/2014

14. Boston University Slideshow Title Goes Here Module I: Introduction to EE Smart Lighting  What could be done to make lighting better?  Energy Efficiency  Healthy Lighting  Productivity (Data access) 14 07/07/2014

15. Boston University Slideshow Title Goes Here Module I: Introduction to EE Visible Light Communication  Radio spectrum is congested, visible spectrum has potential! 15 07/07/2014

16. Boston University Slideshow Title Goes Here Module I: Introduction to EE Smart Lighting ERC Accomplishments 16 07/07/2014

17. Boston University Slideshow Title Goes Here Module I: Introduction to EE Smart Lighting Kit 17 07/07/2014 Course website: http://hulk.bu.edu/courses/SmartLight/ Mobile Studio Project: http://www.mobilestudioproject.com/ Smart Lighting Lab kit contents: 2 Rhett Boards 2 USB to micro-USB cables 2 Breadboards 2 Wiring kits 2 Alligator Clips Resistors and capacitors Red, green and white LEDs Photodiode(PD) Operational amplifier (Op-Amp) Exclusive-OR (XOR) gate Lens Flashlight Tape measure Protractor Speaker Headphones Transceiver printed circuit board (PCB) o Board Components o 2 USB to serial cables (FTDI)

18. Boston University Slideshow Title Goes Here Module I: Introduction to EE Think – Pair – Share  What did you today? 18 07/07/2014