Vehicle Faulty Lamp and Flasher Vehicle Faulty Lamp and Flasher Identifier Senior Design Dec05-13 End-Product

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  • Vehicle Faulty Lamp and Flasher Identifier

    Senior Design Dec05-13

    End-Product Design Report

    Client Iowa State University

    Faculty Advisor

    Professor Gary Tuttle

    Team Members

    Joshua Halbur, CPR E Ramy Henin, CPR E

    Deepak Mishra, CPR E Dhaval Patel, EE Faisal Tamin, EE

    REPORT DISCLAIMER NOTICE DISCLAIMER: This document was developed as a part of the requirements of an electrical and computer engineering

    course at Iowa State University, Ames, Iowa. This document does not constitute a professional engineering design or a professional land surveying document. Although the information is intended to be accurate, the associated students,

    faculty, and Iowa State University make no claims, promises, or guarantees about the accuracy, completeness, quality, or adequacy of the information. The user of this document shall ensure that any such use does not violate any laws with regard to professional licensing and certification requirements. This use includes any work resulting from this student-

    prepared document that is required to be under the responsible charge of a licensed engineer or surveyor. This document is copyrighted by the students who produced this document and the associated faculty advisors. No part may

    be reproduced without the written permission of the senior design course coordinator.

    April 8, 2005

  • Table of Contents LIST OF FIGURES ........................................................................................................................... III LIST OF TABLES ............................................................................................................................IV LIST OF DEFINITIONS ......................................................................................................................V

    SECTION 1: INTRODUCTORY MATERIAL................................................................................... 1 1.1 EXECUTIVE SUMMARY ...................................................................................................... 1 1.2 ACKNOWLEDGMENT ......................................................................................................... 1 1.3 PROBLEM STATEMENT...................................................................................................... 1

    1.3.1 General Problem Statement ...................................................................................... 1 1.3.2 General Problem Solution.......................................................................................... 2

    1.4 OPERATING ENVIRONMENT ............................................................................................... 2 1.5 INTENDED USERS AND USES ............................................................................................. 3

    1.5.1 Intended Users........................................................................................................... 3 1.5.2 Intended Uses............................................................................................................ 3

    1.6 ASSUMPTIONS AND LIMITATIONS ....................................................................................... 3 1.6.1 Assumptions .............................................................................................................. 3 1.6.2 Limitations.................................................................................................................. 4

    1.7 EXPECTED END PRODUCT AND OTHER DELIVERABLES ...................................................... 4 1.7.1 Sensor System........................................................................................................... 4 1.7.2 Control Unit ................................................................................................................ 5 1.7.3 Displaying Device ...................................................................................................... 5 1.7.4 Documentation........................................................................................................... 5

    SECTION 2: END PRODUCT DESIGN .......................................................................................... 6 2.1 APPROACH USED ............................................................................................................. 6

    2.1.1 Design Objectives ...................................................................................................... 6 2.1.2 Functional Requirements.......................................................................................... 6 2.1.3 Design Constraints..................................................................................................... 7 2.1.4 Technical Approach Considerations and Results...................................................... 7 2.1.5 Testing Approach Considerations............................................................................ 10

    2.1.5.1 Individual Systems Testing .......................................................................................10 2.1.5.2 Full System Testing....................................................................................................10 2.1.5.3 Environmental Testing ...............................................................................................11

    2.1.6 Recommendations Regarding Project Continuation or Modification ....................... 11 2.2 DETAILED DESIGN .......................................................................................................... 11

    2.2.1 Display System ........................................................................................................ 11 2.2.2 Processing System .................................................................................................. 12 2.2.3 Sensor System......................................................................................................... 12

    2.2.3.1 Comparator and Resistor Circuit ..............................................................................12 2.2.3.2 Allegro Micro Current Sensor....................................................................................12

    2.2.4 Full System .............................................................................................................. 13 2.2.4.1 Self Test Procedure ....................................................................................................13 2.2.4.2 Filament Test Procedure............................................................................................13 2.2.4.3 Flasher Unit Test Procedure ......................................................................................14

    SECTION 3: RESOURCES AND SCHEDULES .......................................................................... 16 3.1 RESOURCES REQUIREMENTS .......................................................................................... 16

    3.1.1 Personnel Effort Requirements................................................................................ 16 3.1.2 Other Resource Requirements ................................................................................ 17 3.1.3 Financial Requirements ........................................................................................... 17

    3.2 SCHEDULES ................................................................................................................... 19 SECTION 4: CLOSURE MATERIAL ............................................................................................ 25

    4.1 PROJECT TEAM INFORMATION ........................................................................................ 25 4.2 CLOSING SUMMARY........................................................................................................ 26

    i

  • 4.3 APPENDIX A................................................................................................................... 27

    ii

  • List of Figures Figure 1: Top-Level components diagram of the end product .................................. 2 Figure 2: Full system diagram ...................................................................................... 15 Figure 3: Detailed project Gantt chart excluding deliverables ................................ 20 Figure 4: Project Gantt chart for deliverables only.................................................... 21 Figure 5: Comparison Gantt chart for the first half of the project tasks................. 22 Figure 6: Comparison Gantt chart for the second half of the project tasks. ......... 23 Figure 7: Completion percentages for each task. ..................................................... 24 Figure 8: Block Diagram of the LCD ........................................................................... 27 Figure 9: Block diagram for the ACS704 .................................................................... 29

    iii

  • List of Tables Table 1: Original personnel effort requirements........................................................ 16 Table 2: Revised personnel effort requirements ....................................................... 17 Table 3: Original additional resource requirements.................................................. 17 Table 4: Revised additional resource requirements ................................................. 17 Table 5: Original Financial Requirements .................................................................. 18 Table 6: Revised financial requirements ................................................................