To design voice based BUS ID system for blind.
Block diagram Explanation:
HAND HELD DEVICE FOR BLIND:
This project consists of encoder which constantly gives the input to RF transmitter. RF transmitter continuously transmits the information of the bus to blind person at the frequency of 433 MHz. Blind person has the receiver which receives RF signal if the blind person is near the bus. Receiver consists of the decoder which decodes the signal and the decoded signal is given as input to the micro controller, which compares obtained information and stored value. Microcontroller is programmed in such a way that based on this comparison there will be a voice announcement to the blind person as which bus is approaching.
Hard ware Features:
- µC : PIC
- Sensors :
RF transreceiver: 433Mhz
Voice IC: APR 9600
- LCD: 16*2 , 100 ma , LCD Display
- Power Supply: 5V, 750 ma current.
Soft ware Features:
µC programming: C
MPLAB IDE compiler, PIC Flash Programmer