Senior Design I Automatic Announcer

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Senior Design I Automatic Announcer
EEL 4914 Spring 2002 Dr. Richie Class Group 8

• Members
• Zemian Deng
• Kim Pham
• Quang Tran
• Nick Zicchino

2
Introduction

• Goals
• A Hardware and Software project that will be used
  in a situation such as announcing student's names
  in a graduation ceremony.
• The project device will read barcode index cards
  that serve as a student ID and it will match a
  wave file stored in a database, and then the
  software will automatically announce the student
  name.
• Motivation
• If successfully designed and built, this project
  could be used at our own school.
• The project involves both hardware and software
  components, so it will give us ample
  opportunities to exercise our knowledge acquired
  during the past few years.

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System Architecture Overview
Barcode Card
Software/Firmware
Hardware
Speakers

Optical Reflective Sensor
Read Barcode
Barcode Value 8965
RS232 Interface ASM/Controller
Barcode Data TTL
Decoder
Binary Code
Everybody
Nick Quang
Assigned Member Research
Kim Nick
Zamien Quang
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Hardware Specifications

• Scanner Device Components
• Photo diodes that are able to read Code39 barcode
• Decoder that supports TTL and sends to RS232
• The Scanner Device is able to read in the barcode
  printed on the index cards of size 2 x 3
• Scanner Device must operate with either 9V
  battery or 120V AC
• Scanner Device is about 5 x 2 x 3

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Barcode Design
Figure illustrates how a barcode is read.

• Barcode font Code 3 of 9 (Code 39)
• All upper case alpha characters (A-Z)
• All numeric characters (0-9)
• 7 special characters (- . )
• Discrete (code type)
• Bi-directionally Decodable
• Character Self-Checking
• Start and stop characters (asterisk
• character)
• Using Linear Barcode which holds about 16
• ASCII characters.

All Pictures reprinted with permission of AIM
Global Network
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Barcode Design (cont.)
Reprinted with permission of AIM Global Network

• The maximum density for barcode 39 is 9.4
  characters per inch including 2 start
• and stop characters.
• Choose X dimension from 10 to 25 mils. X
  dimension is the narrowest bar or
• space in a barcode.
• Quiet zone has to be 10x X dimension to keep
  the scanner from picking up the
• information not belong to the barcode.
  Barcodes quiet zone is the clear area at
• the beginning and at the end of barcode.

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Software Specifications

• Platform Windows family (98/2000/NT)
• Language C (MFC)
• Barcode System Standard 309 Barcode Font
• Database System Microsoft Access DB with
  ODBC Interface
• Development IDE Microsoft Visual Studio C
• Optional Tool Microsoft Access
• Database Programming Interface Microsoft MDAC
  library.
• The software must be able to accept the input
  either from the barcode device or from the
  keyboard.
• The time to process data for one student must be
  less than 1 second, and the software must be
  ready to accept next input in less than 2
  seconds.

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Software Design Model
Three Easy User Interface Modes Design
Enter/Import All Student Names
Save the .WAV file into database
Record .WAV File
For each student
Mode 1
(DataEntry)
Printer
I.D. Card
Each student in database
Encode SSN
Print Barcode
Mode 2
(PrintView)
Retrieve .WAV File
Barcode Scanner or Keyboard Input
I.D. Card
Mode 3
(Presentation)
Read Barcode
Play .WAV File
Barcode Data
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Project Cost
10
Milestone
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Summary

• The Automatic Announcer is a great fit in a
  graduation ceremony or any other occasion where
  we need to announce some name list.
• We are trying to automate this process as much as
  possible.
• We want our Device and Software to converge into
  a user friendly and easy to-use package design.
• We will study what has been done and what are
  available out in the field, and try to redesign
  our own version.
• Hopefully this project will get us good grade and
  some experience in the engineering field.