EEL 4924 Electrical Engineering Design (Senior Design) Final Report April 25th 2010

Transcription

1 Nguyen Nguyen Situation See Spot Track 1 EEL 4924 Electrical Engineering Design (Senior Design) Final Report April 25th 2010 Project Title: See Spot Track Team Name: Nguyen Nguyen Situation Team Members: Name: George Nguyen nggeuoyregne@gmail.com Name: Long Nguyen nguyenl@ufl.edu Project Abstract: Our project consists of a tracking system that will accurately follow a selected target with a spotlight thus removing the need for a human spotlight operator. This saves on labor, cost, and time. We will be developing an IR real time location system to track and follow targets. The spotlight will fluidly move and follow the target based upon location information processed by a microprocessor. A controller will be used to designate targets and pair them with corresponding spotlights as needed. Table of Contents Introduction

2 Nguyen Nguyen Situation See Spot Track 2 Features Technical Objectives Concept Selection... Components Bill of Materials... Distribution of Labor Gantt Chart Appendices List of Tables Table 1: Concept Generation Table 2: Concept Selection Matrix List of Figures Figure 1: Block Diagram Figure 2: Gantt Chart

3 Nguyen Nguyen Situation See Spot Track 3 Introduction The idea of Automated Tracking Spotlight has been implemented in the past through different methods. Commercial products use image processing to track targets or a variety of transmitting devices that are received to determine location. We are choosing to use infrared in order to accurately determine location. Hanging the camera in a birds eye view allows us to avoid common problems including different obstacles and targets moving in front of each other. Creating an automated system for spotlight operation eliminates the need for a human operator and the tracking system could be scaled to larger uses, for example, a spotlight helicopter that could track fast moving cars. Since the spotlight movement and automated tracking are two different systems, we could also theoretically apply our work to further uses. The automated tracking could be interfaced with standard DMX lighting controllers to be used with any followspot or intelligent light fixture. The moving spotlights could also be suited for certain lighting set ups, depending on the purpose. Features See Spot Track will be able to do the following: Track a target in a defined area Spotlight will be able follow a target

4 Nguyen Nguyen Situation See Spot Track 4 Technical Objectives This automated tracking spotlight consists of two main components: Tracking and Movement. 1. The IR system needs to track a target based upon a pattern from an IR LED or specific frequency of an IR LED 2. If we are to precisely follow a target with a beam of light, the location calculation must be done quickly and the data must be transmitted with minimal delay. Otherwise we would run into problems with the spotlight lagging behind the target and not adequately lighting it. 3. The processing unit of our tracking system needs to be able to communicate between the IR camera of the tracking system and the movement controller of the spotlights. 4. The spotlight will use a pan-tilt motor scheme. One servo motor will move on the x axis while another is controlling the y axis. This allows full movement and tracking along a flat 2D plane. Figure 1 Block Diagram

5 Nguyen Nguyen Situation See Spot Track 5 Concept Selection Tracking Communication Spotlight Movement Power Concept A RFID Wireless Pan-Tilt Battery Concept B Ultrasonic and RFID Wireless Pan-Tilt Battery Concept C IR Wireless Pan-Tilt Battery Concept D IR Wired Reflective lens Battery Concept E IR Wireless/DMX Reflective lens 120V Commercial Product Ultrasonic Wired/DMX/PC Existing Fixtures 115V or 230V Table 1: Concept Generation Concept A B C D E Commercial Product Customer/Market Needs Importance Accuracy and Precision Cost Scalability Compatibility Ranking Table 2: Concept Selection Matrix Concept E is shown to currently be the most optimal concept generated thus far. It aims to be precise, save on costs, is scalable, and compatible with existing systems. We will be choosing components that fit the our technical objectives as well as fulfilling the market needs as expected for this project. Component Selection Hardware Digital Component FPGA - Cyclone III up - Atmega8515

6 Nguyen Nguyen Situation See Spot Track 6 Hardware Analog Component The spotlight will require a motor system to move the beam of light. 2 servos are used to pan and tilt the spotlight To demonstrate the spotlight function, we will be imitating the light be using a LED flashlight. If necessary a laser can be attached to see directly where the beam is pointed at in any lighting condition. IR camera IR LED tracking tags will be battery powered and need a voltage regulator. This will be an analog regulator with no need for an IC.

7 Nguyen Nguyen Situation See Spot Track 7 Bill of Materials Item Quantity Price ($) Total Price ($) Atmega8515 x Momentary Push Buttons x Pan/Tilt Bracket x Small Servo x Large Servo x SPDT Switch x V Wall Wart x Project Enclosure x C3188a CMOS Camera x Misc parts (Resistors, LEDS, cable, etc) PCB Board x Altera DE0 Board x

8 Nguyen Nguyen Situation See Spot Track 8 58mm IR Lens Filter x Total Cost Distribution of Labor George Nguyen is responsible for IR tracking system IR camera and IR pattern recognition system Interface with FPGA and processor PCB design for IR tracking system. IR camera power system Long Nguyen is responsible for spotlight control system Motorized system to control beam Interfacing with processor Adding manual control to user controls PCB design for spotlight control system Spotlight power system Both team members will be working together throughout the semester to integrate both systems, design the user control system, and design PCB and Final builds. Gantt Chart As seen in the Gantt Chart, the red marks where we began to fall behind in our deadlines. Figure 2: Gantt Chart

9 Nguyen Nguyen Situation See Spot Track 9 Appendix References bjc54_wh84/design.html PCB Schematic