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GPS Tour Guide Fall 2006

GPS Tour Guide Fall 2006. Team: Lau-Suárez LLC. Project Idea. Problem : Campus tours start at specific times. Many times, visitors cannot make it to any of the campus tours because it conflicts with their schedule.

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GPS Tour Guide Fall 2006

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  1. GPS Tour GuideFall 2006 Team: Lau-Suárez LLC

  2. Project Idea • Problem: Campus tours start at specific times. Many times, visitors cannot make it to any of the campus tours because it conflicts with their schedule. • Solution: Give visitors the option to take a campus tour that fits their schedule. Our project is a handheld electronic tour guide using a GPS (Global Positioning System) module. Our solution is not a replacement for human tour guides.

  3. Wish List • After we have completed the handheld GPS Tour Guide unit, we wish to make a base station. • The idea is to have many handheld units. Instead of individually updating them, the base station would be able to wirelessly update all the units at the same time. • This feature would save time.

  4. Requirements Performance • Reasonable battery life • Find key locations with error of no more than 100 feet • Reasonably durable enclosure for handheld system • Communicate wirelessly with base station of up to 50 feet

  5. Requirements Features • Give the user the option of turning on/off audio information in addition to text information • Notify user when near a key location • Notify user if the handheld system has lost satellite signals • Soft reset for user

  6. Hardware • 8-bit Microcontroller: Atmel ATmega128 • Chosen because it has two USARTs, SPI bus communication, many I/O pins, 128K flash memory, and runs at 16MHz (external osc.)

  7. Hardware • GPS module: 20 Channel EM-406 SiRF III Receiver with Antenna • Able to connect to 12 satellites • The module can be used indoors or outdoors.

  8. Hardware • Audio Information: Emic Text-to-Speech SIP Module (Female) • This module sends an ASCII “OK” if the text to speech conversion was successful.

  9. Hardware • Text Information: Optrex C-51847 LCD • Programmed in 8-bit mode • Define stdout for use of printf()

  10. Hardware • Wireless: Transceiver MiRF v2 - nRF24L01 Module RP-SMA • The RF link interface to the microcontroller will operate on the SPI (Serial Peripheral Interface) bus. • The wireless module was chosen because the nRF24L01 chip has commands that allow reading of the chip’s internal registers. This feature will make debugging easier.

  11. Possible Issues • Packaging of the handheld device • Mapping location for GPS within reasonable accuracy • GPS satellite lock time • Wireless update algorithm

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