LED Intelligent Lighting System Mid-Semester Presentation October 4, 2007

Team Members Jeff Pike Responsibilities: Team Leader, DMX Communication, Research, and Documentation Major: Electrical Engineering Ryan Foret Responsibilities: LED Implementation, DMX Communication, Research, and Documentation Major: Electrical Engineering Matt Ladner Responsibilities: Power Supply, Motor Implementation, Website Management, Research, and Documentation Major: Electrical Engineering Jeremy Scruggs Responsibilities: Power Supply, LED Implementation, Motor Implementation, Research, and Documentation Major: Electrical Engineering

Overview  Introduction  Problem and Solution  Technical and Practical Constraints  Approach  Timeline  Summary  Questions and Answers

Introduction Controller (Hardware/Software) Lights (Move, Change Colors) What is a Lighting System? AmateursProfessionals Hardware Controller Software Controller Stationary Lights Automated Lights

Introduction Computer Software USB to DMX Interface Intelligent Lighting Fixture *NOTE -- DMX-512 Protocol is the industry standard communication for intelligent lighting systems

Problem Current Professional Lighting Systems Positives :  Create dynamic, multicolored shows  Lights move very quickly  User can program entire shows Negatives :  Very expensive (software and light fixtures)  Consume a lot of power  Heavy and bulky  Use incandescent bulbs which are fragile

Solution LED Intelligent Lighting System Positives :  Creates dynamic, multicolored shows  Lights move quickly  User can program entire shows  Uses durable LEDs  Requires much less power  Very competitive costs  Lightweight and compact

NameDescription LED Intelligent Lighting System technical design constraints, adapted from [1] Technical Constraints The product must have a factory preset of 16 colors from a palette of approximately 16 million colors. The light fixture must be able to pan 360° and tilt 180°. The light must use less than 7.5 amps at 110/120 volts. The product must communicate using the DMX-512 protocol. The light must have 256 different levels of intensity from completely off to fully on. Color Variation Range of Motion Current Draw Compatibility Light Intensity

TypeNameDescription EconomicCostEach fixture must manufacture under $ Health and SafetySafetyThe light fixtures must operate in a non- hazardous manor. LED Intelligent Lighting System technical design constraints, adapted from [1] Practical Constraints

Practical Constraints - Cost The LED Intelligent Lighting Fixtures must manufacture under $ Reasoning: Be competitive in the market place Affordable for more consumers

Practical Constraints - Safety The light fixtures must operate in a non-hazardous manner. How is this accomplished?Ground Fault ProtectionDurable ConstructionLow Heat Emissions

Types of RS-485/DMX-512 Transceivers considered Approach – Communication TI SN75176 and PIC18F24J10 Artistic Licence – AL4800

Approach - LEDs Lamina Atlas LED Lamina Titan LED 50 Watt Incandescent Types of Lights considered

Approach - LEDs IntensityCurrent Draw Retail Cost Titan LED~ 850 lumens~ 4200 mA$90.00 Atlas LED~ 250 lumens~ 1575 mA$ Watt [4] Incandescent ~ 720 lumens~ 4470 mA $35.00

Approach – LED Drivers Types of LED Drivers considered TLC Boost Puck

Approach – LED Drivers Output Channels Output Current Total Power Output TLC mA1920 mA 4015 Boost Puck mA350 mA * LED Drivers operate at 5 V CC

Approach – Motors Types of motors used in motion control Stepping Motor –Motor that moves in discrete steps Servo Motor –Consist of DC motor, control circuit, gear reduction unit, position-sensing device.

Approach – Motors ProsCons Stepper Motors Low cost High torque at low speeds Very rugged Can lose position Lower torque at higher speeds Servo Motors High intermittent torque High speeds More reliable than stepper motors More expensive than stepper motors Require feedback Limited to 200 degrees of movement

Timeline

Summary The LED Intelligent Lighting System: Creates multi-colored light shows. Cost efficient Durable and lightweight

References [1] M. Ladner, R. Foret, J. Pike, and J. Scruggs “LED Intelligent Lighting System Technical and Pratical Design Constraints," unpublished. [2] (3,Oct. 2007) handyboard.com. [Online] Available: [3] National Instruments. “Motor Fundamentals” in National Instruments Developer Zone, Oct. 3, [Online]. Available: [4] (4, Oct. 2007) donsbulbs.com. [Online] Available: 7Cwfl%7C12v.html