Project: FJL – GPS1 General Purpose GPS Navigation Module MQP Ver. 1.9 3/4/10 Nicholas Granata – Cappabianca [email protected] WPI box number 724 ECE box number 7 1 Table of Contents Table of Contents .......................................................................................................................................... 2 1.0 Introduction ............................................................................................................................................. 4 1.2 Project Statement ................................................................................................................................... 4 1.3 Summary ................................................................................................................................................. 5 2.0 Introduction ............................................................................................................................................. 6 2.1 Soaring ..................................................................................................................................................... 6 2.1.1 Glider Lift ............................................................................................................................................ 10 2.1.2 Glider Performance ............................................................................................................................ 11 2.2 GPS........................................................................................................................................................ 12 2.3 Flight Data Systems ............................................................................................................................... 14 2.4 Summary ............................................................................................................................................... 18 3.0 Introduction ........................................................................................................................................... 19 3.1 Project Statement ................................................................................................................................. 19 3.2 System Requirements ........................................................................................................................... 19 3.3 Summary ............................................................................................................................................... 19 4.0 Introduction ........................................................................................................................................... 20 4.1 Block Diagram ........................................................................................................................................ 20 4.2 Description of Modules ......................................................................................................................... 22 4.2.1 User Display ........................................................................................................................................ 22 4.2.1.1 Detailed Data Display Formats ........................................................................................................ 22 4.2.2 GPS ..................................................................................................................................................... 23 4.2.3 Antenna .............................................................................................................................................. 25 4.2.4 Input ................................................................................................................................................... 26 4.2.5 MCU – Micro Controller Unit ............................................................................................................. 26 4.2.6 USB ..................................................................................................................................................... 27 4.2.7 Batteries ............................................................................................................................................. 28 4.2.7 Power Circuitry ................................................................................................................................... 29 4.2.8 Charging Circuit .................................................................................................................................. 30 4.3 Summary ............................................................................................................................................... 31 5.0 Introduction ........................................................................................................................................... 32 5.1 The Device ............................................................................................................................................. 32 2 5.2 Circuit Diagram ...................................................................................................................................... 34 5.3 Description of the Circuit ...................................................................................................................... 36 5.3.1 MCU – MSP430F47196 ....................................................................................................................... 36 5.3.2 User Display ........................................................................................................................................ 36 5.3.3 Buttons ............................................................................................................................................... 39 5.3.4 GPS ..................................................................................................................................................... 39 5.3.5 Power Circuit ...................................................................................................................................... 40 5.3.6 The Charging Circuit ........................................................................................................................... 42 5.3.7 UART to USB ....................................................................................................................................... 43 5.3.8 JTAG .................................................................................................................................................... 44 5.4 Printed Circuit Board ............................................................................................................................. 45 5.5 Software ................................................................................................................................................ 48 5.6 Summary............................................................................................................................................... 49 6.0 Introduction ........................................................................................................................................... 50 6.1 Testing ................................................................................................................................................... 50 6.2 Summary ............................................................................................................................................... 52 7.0 Introduction ........................................................................................................................................... 53 7.1 Conclusions ............................................................................................................................................ 53 7.2 Summary ............................................................................................................................................... 55 Appendix A – Example of a Glider Flight Computer .................................................................................... 56 Appendix B - Example of a Glider Flight Computer ..................................................................................... 60 Appendix C – WAAS (Wide Area Augmentation System) ............................................................................ 63 Appendix D – NEAM Codes (Strings) ........................................................................................................... 65 Appendix E – Bill of Materials ..................................................................................................................... 66 Appendix F – The Software ......................................................................................................................... 68 Appendix G – How to Program the Device .................................................................................................. 88 Appendix H – LCD Character Pattern .......................................................................................................... 92 3 Chapter 1 Introduction 1.0 Introduction Every glider pilot loves to be in the air, soaring amongst the clouds thousands of feet above the ground, flying for miles, being one with the aircraft. Although all glider pilots have a sense of where they are and if they can make it back, to their home airport, it is always nice to fly for as long as possible and to have an