Portable Finish Line Data Capture System for Sprinters Senior Design I Group 30 Argeny Batista Electrical Engineer [email protected] Michael Colucciello Computer Engineer [email protected] Jamal McNab Electrical Engineer [email protected] Tyler Snell Electrical Engineer [email protected] i | P a g e Table of Contents 1.0 Executive Summary ................................................................................................................... 1 2.0 Project Description.................................................................................................................... 3 2.1 Project Motivation & Goals ....................................................................................................... 3 2.2 Requirement Specifications ...................................................................................................... 3 2.2.1 Hardware Requirements ........................................................................................................ 3 2.2.2 Software Requirements ................................................................................................. 4 2.2.3 Market Requirements .................................................................................................... 6 2.3 Quality of House Analysis ..................................................................................................... 7 3.0 Research related Project Definition .......................................................................................... 7 3.1 Existing Projects and Systems ............................................................................................... 7 3.1.1RFID Devices used in Track Related Events .................................................................... 7 3.2 Relevant Technologies .......................................................................................................... 8 3.2.1 Microcontrollers ............................................................................................................ 8 3.2.2 Bluetooth Modules ........................................................................................................ 9 3.2.3 RFID .............................................................................................................................. 10 3.2.4 Photo resistors ............................................................................................................. 12 3.2.5 IR Sensors ..................................................................................................................... 14 3.2.6 RF Transmitters and Receivers .................................................................................... 15 3.2.7 Power Supply ............................................................................................................... 16 3.2.8 LED ............................................................................................................................... 24 3.2.9 Speakers ....................................................................................................................... 27 3.3 Hardware Strategic Components and Parts Selection ........................................................ 32 3.2.1 Trip Sensor System Components ................................................................................. 32 3.2.2 Audio System Components .......................................................................................... 33 LM386 ................................................................................................................................... 33 3.2.3 Microcontroller Components ...................................................................................... 33 3.2.4 LED System Components ............................................................................................. 40 3.2.5 Power System Components ......................................................................................... 41 3.3 Software Architecture and related diagrams ..................................................................... 46 3.3.1 Mobile Application Architecture.................................................................................. 46 ii | P a g e 3.3.2 Microcontroller Programming Architecture ................................................................ 48 4.0 Related Standards and Realistic Design Constraints .............................................................. 51 4.1 Standards ............................................................................................................................ 51 4.1.1 Bluetooth & Wi-Fi Standards ....................................................................................... 51 4.2 Realistic Design Constraints ................................................................................................ 52 4.2.1 Economic and Time Constraints .................................................................................. 52 4.2.2 Environmental Constraints .......................................................................................... 52 4.2.3 User Constraints ........................................................................................................... 52 5.0 Project Hardware and Software Design Details ...................................................................... 53 5.2 Laser/LDR Subsystem Design Details .................................................................................. 53 5.2.1 Schematics & Other Details ......................................................................................... 53 5.3 Audio Subsystem Design Details ......................................................................................... 56 5.3.1 Schematics & Other Details ......................................................................................... 56 5.4 Microcontroller Design Details ........................................................................................... 58 5.4.1 Schematics & Other Details ......................................................................................... 58 5.5 LED Subsystem Design Details ............................................................................................ 59 5.5.1 Schematics & Other Details ......................................................................................... 59 5.6 Power System Design Details .............................................................................................. 60 5.6.1 Power Needs ................................................................................................................ 60 5.6.2 Battery Description ...................................................................................................... 60 5.6.3 Regulator Schematic & Description ............................................................................. 60 5.6.4 Charger Schematic and Details .................................................................................... 68 5.7 Microcontroller Programming Design Details .................................................................... 70 5.7.1 Main Routine Design .................................................................................................... 71 5.7.2 Sprint Preparation Routine Design .............................................................................. 73 5.7.3 Sprint Routine Design .................................................................................................. 76 5.7.4 Sprint Completion Routine Design............................................................................... 79 5.7.5 Multiple User Functionality Design .............................................................................. 81 5.8 Android Application Programming Design Details ............................................................. 82 5.8.1 Main Routine Design .................................................................................................... 82 5.8.2 Sprint Class Design ....................................................................................................... 84 iii | P a g e 5.9 Microcontroller to Smartphone Communication Design Details ....................................... 85 5.9.1 Wireless Connection Options ...................................................................................... 85 5.9.2 Microcontroller Communication ................................................................................. 86 5.9.3 Smartphone App Communication ............................................................................... 87 5.10 Smartphone App User Interface Design Details ............................................................... 87 5.10.1 Main Screen Design ................................................................................................... 87 5.10.2 Sprint Management Screen Design ........................................................................... 89 5.10.3 Connection Screen Design ......................................................................................... 91 6.0 Project Prototype Construction and Coding ........................................................................... 92 6.1 Integrated Schematics & Diagrams..................................................................................... 93 6.1.1 Component Interaction Diagram ................................................................................. 93 6.1.2 Microcontroller Communication Diagram