University of Central Florida Department of Electrical Engineering and Computer Science A2D Analog to Digital HUD Instrument Cluster with Touch Screen Command Center GROUP #4 Chris de Guzman Jonathan Gonzalez Frank Reed Paolo Ronquillo Senior Design 2 Dr. Samuel Richie Summer – Fall 2010 1. INTRODUCTION .................................................................................................................... 1 1.1 Executive Summary ............................................................................................................................ 1 1.2 Motivation ......................................................................................................................................... 2 1.3 Objectives and Goals .......................................................................................................................... 2 1.4 Requirement Specifications ................................................................................................................ 3 2. RESEARCH .............................................................................................................................. 5 2.1 HUD Research..................................................................................................................................... 5 2.1.1 Current Usage .................................................................................................................................... 6 2.1.1.1 Night Vision ................................................................................................................................ 6 2.1.1.2 Automotive Application ............................................................................................................. 7 2.1.1.3 Underlying Tech ......................................................................................................................... 7 2.1.1.4 Computer ................................................................................................................................... 7 2.1.1.5 Combiner ................................................................................................................................... 7 2.1.1.6 Projector .................................................................................................................................... 8 2.1.1.7 Reflective HUD ........................................................................................................................... 8 2.1.1.8 Transmissive HUD ...................................................................................................................... 9 2.1.2 Cost and Other Limitations ................................................................................................................ 9 2.1.3 Advanced HUD Concepts ................................................................................................................... 9 2.2 Touch Screen Research ..................................................................................................................... 10 2.2.1 Touch Screens .................................................................................................................................. 10 2.2.1.1 Capacitive Touch Screens ........................................................................................................ 11 2.2.1.2 5-Wire Resistive touch Screen ................................................................................................. 14 2.2.2 Touch screen Controller .................................................................................................................. 21 2.2.3 Graphical User Interface .................................................................................................................. 22 2.3 Simulation Research ......................................................................................................................... 23 2.3.1 Discussion of vehicle implementation versus simulation ................................................................ 23 2.3.2 What data is in a car and what will we simulate ............................................................................. 24 2.3.3 Car data development board research: ........................................................................................... 26 2.3.4 Car data controller research: ........................................................................................................... 29 2.4 Sensors Research .............................................................................................................................. 30 2.4.1 Tire Pressure Monitoring Systems (TPMS) ...................................................................................... 31 2.4.2 Outside Temperature Sensing System ............................................................................................. 36 2.4.3 Compass........................................................................................................................................... 38 2.4.4 Power Locking Mechanism .............................................................................................................. 39 2.4.5 Vehicle Restraint System ................................................................................................................. 40 3. DESIGN ................................................................................................................................... 45 3.1 Design Overview Block Diagram ....................................................................................................... 45 3.2 Dual Display Design .......................................................................................................................... 45 3.2.1 Block diagram for Display System .................................................................................................... 45 3.2.2 Comparison of approaches for the Dual Display System ................................................................. 47 3.2.2.1 CRT VS. LCD .............................................................................................................................. 47 3.2.3 Display device Architecture ............................................................................................................. 50 3.2.3.1 Overview .................................................................................................................................. 50 3.2.4 Dual display components ................................................................................................................ 50 3.3 Touch Screen Design ........................................................................................................................ 52 3.3.1 Touch Screen Block Diagrams .......................................................................................................... 53 3.3.2 Comparison of Approaches ............................................................................................................. 55 3.3.2.1 Capacitive vs. Resistive (4/5 Wire) ........................................................................................... 55 3.3.2.2 Mounting Options .................................................................................................................... 55 3.3.2.3 Color vs. Monochrome ............................................................................................................ 57 3.3.3 Touch Screen Architecture .............................................................................................................. 58 i 3.4 Simulation Design............................................................................................................................. 58 3.4.1 Simulation block diagram: ............................................................................................................... 58 3.4.2 Simulation design: ........................................................................................................................... 59 3.4.3 Car Data controller comparison....................................................................................................... 61 3.4.4 Car Data Programming .................................................................................................................... 62 3.4.5 Car Data Schematic .......................................................................................................................... 63 3.5 Sensors Design ................................................................................................................................. 65 3.5.1 Sensor Block diagram ...................................................................................................................... 65 3.5.2 Comparison of approaches for the sensors ..................................................................................... 68 3.5.2.1 Outside Temperature Sensing System ..................................................................................... 68 3.5.2.3 Compass ................................................................................................................................... 69 3.5.2.4 Power Locking Mechanism ...................................................................................................... 70 3.5.2.5 Vehicle Restraint System ........................................................................................................