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MODULE 1: INTRODUCTION SUMMER CHALLENGE Electrical Engineering: Smart Lighting Michael Rahaim, PhD Candidate Multimedia Communications Lab Smart Lighting Engineering Research Center Boston University [email protected] Module I: Introduction to EE 07/06/2015 Overview Boston Welcome! University Slideshow Title Goes Here Introductions Course Structure and Objectives What is Electrical Engineering? Devices, Communication, Networks 2 Module I: Introduction to EE 07/06/2015 Introductions Boston Instructor: Mr. Michael Rahaim ([email protected]) University Slideshow Title Goes Here Teaching Assistants Mr. David Tran Mr. Cristian Morales Mr. Than Tsiligkaridis Students… (That’s you…) Introduce yourself Share 2 facts about yourself Remember what is said! (We will come back to this later) 3 Module I: Introduction to EE 07/06/2015 Introductions Boston The Multimedia Communications Lab (MCL) University Slideshow Title Goes Here 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! http://smartlighting.rpi.edu/ http://www.bu.edu/smartlighting/ 4 Module I: Introduction to EE 07/06/2015 Course Objectives Boston Become familiar with: University Slideshow Title Goes Here 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 Module I: Introduction to EE 07/06/2015 Course Overview Boston PC Login: .\Challenge password: ECE[2015] University Slideshow Title Goes Here Course website: hulk.bu.edu/courses/SmartLight/ Course Schedule: Module Topic Activities 1 Introduction Electrical Engineering, Networks, Data Communication, and Smart Lighting 2 Analog Discovery Board Operating the Analog Discovery Board, Electricity, and Signals 3 Basic Circuits Investigate the operation of resistive and capacitive circuits 4 LEDs LED operation and Electrical Characterization 5 PDs and VLC links PD Operation and Optical Channel Characterization 6 The Smart Lighting Board VLC Transceiver PCB assembly Assignment: Presentation Topic Decision 7 Analog Transmission Investigate VLC transmission using analog signals 8 Digital Transmission Investigate VLC transmission using digital signals 9 VLC Applications Arduinos, VLC text messages, and presentation rehearsal 10 Presentations Student presentations 6 Module I: Introduction to EE 07/06/2015 Lab Notebooks Boston Entries: University Slideshow Title Goes Here Name / Group Members Names Date of Entry Experiment overview & hypothesis Sketches of experimental setup Measurements Calculations Results & observations Open questions 7 Module I: Introduction to EE 07/06/2015 Exercise I: What is EE? Hydro … Microelectronics Power Grid Nuclear PCBs Electromagnetics Distribution Boston University Slideshow Title Goes Here Electronic Circuits Generation Solar Power Systems Digital Logic Home Computers End User Lighting EE Power Flight automation Computers Embedded Computing Control Systems Signal Processing Automotive Super Computers Machine to Machine Data Comms User Devices Robotics Analog circuits Digital Signal Processing Networks IoT Cellular WLANs 8 Module I: Introduction to EE 07/06/2015 Networks and Device Communication Boston What are some devices that communicate? University Slideshow Title Goes Here OSI Reference Model: 9 Module I: Introduction to EE 07/06/2015 Physical Layer Boston How can information pass from point to point? University Slideshow Title Goes Here Audio waves Light Signals Radio Waves Electrical Signals Vibrations Attenuation What happens when the signal is passed over a longer distance? Signal to Noise Ratio Interference S S S N N S N N What considerations occur with interference in wired links? What about with wireless links? 10 Module I: Introduction to EE 07/06/2015 Data Link Layer Boston Simplex / Duplex University Slideshow Title Goes Here Handshake – Message / Acknowledgement Full duplex vs half duplex Broadcasting Multiple Access Resource Allocation Techniques: TDMA, FDMA, CDMA Probabilistic Multiple Access Technique: CSMA U1 U2 U3 U4 U1 U2 U3 U4 … Wireless Considerations Hidden Node Problem 3way and 4way Handshake 11 Module I: Introduction to EE 07/06/2015 Network Layer Boston Nodes, Links, and Graphs University Slideshow Title Goes Here 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 Module I: Introduction to EE 07/06/2015 Transport Layer Boston Maximum Transmit Unit (MTU) University Slideshow Title Goes Here 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 Module I: Introduction to EE 07/06/2015 Think – Pair – Share Boston What did you University Slideshow Title Goes Here today? 14