Wireless Voice Guide

1
Wireless Voice Guide

• Done By Supervisors
  
• Asma Afeefy Dr.Raed Al-qadi Lama
  Yassin Ms.Haya Samaneh

2
Objectives

• It was designed to help Blinds and Tourists in
  tourist places and governmental buildings by
  describing their places and guiding them to reach
  their target locations.

3

• What are the components that it contains ?
• What are the problems that faces us ?
• Is the project practical ? Is it possible to
  apply it in real life ?

4
Components

• Headphone.
• Ultrasonic.
• Wireless.
• Mp3.

5
Wireless

• We used MRF24J40M ,2.4 GHz IEEE Std. 802.15.4
  (RF Transceiver Module).
• MIWI Protocol.
• Range 10m.

6
Wireless Circuit
7
Ultrasonic

• Tow circuits
• 1- Transmitter circuit generating 25 KHz ,
  square wave, carried by the user.
• 2- Receiver circuit using amplifier LTV2774 to
  amplify the signal ,bandwidth 5.5MHz.
• Connected to wireless transmitter.

8
Ultrasonic Circuit
9
MP3
10
Problems

• Sensitivity of MP3
• Consistency of Component.
• Amplification of received ultrasonic signal.

11

• Is it Possible to apply WVG in real life?