The document describes a voice-based alert system for blind people using ultrasonic sensors. The system is designed by a team with T. Srinivas Reddy as the guide. It uses an LPC1343 cortex M3 microcontroller connected to ultrasonic sensors and a buzzer. The sensors detect obstacles and the microcontroller triggers voice alerts or buzzer sounds. The system aims to help blind people navigate safely in a low-cost and low-power design.

1. TEAM GUIDE T.SRINIVAS REDDY
(associate prof)
TEAM MEMBERS
C.SAI ESHWAR(10E41A04A7)
B.SAI CHANDRA(10E41A04B7)
A.R.ARJUN(10E41A04B8)
J.SUMANTH(10E41A04C0)

2.  The main aim of the project is to design a voice based
alerting system for the blind people .
 Ultrasonic Sensor senses the obstacles in its path by
continuously transmitting the ultrasonic waves.
 The controlling device of the whole system is a
Microcontroller.
 This system is very helpful for blind people.

3.  Voice based alerts.
 Obstacle detection.
 Low cost solution.
 Low power consumption.

4.  In the previous model we have used PIC18F452
microcontrollers
 It is a 8 bit micro controller and does not supports to
access more equipment's
 In this model only IR sensors were used
 This model do not supports the motion sensing sensors
 High power consumption

5.  We are using cortex M3 Microcontroller in our project.
 It is an 32 bit Microcontroller.
 The length will be comparatively small and it has more
memory.
 We can able to access more equipment's
 It supports all types of sensors

6. Micro Controller
Audio
Recording
Front center
ultrasonic
sensor
Right ultrasonic
sensor
Earphone
Left ultrasonic
sensor
Ultrasonic sensor band
spectacles

7.  Micro controller
 Regulated power supply (RPS)
 Ultrasonic distance sensors
 Voice circuit
 Buzzer

8.  LPC1343 is ARM CORTEX M3 based micro
controller.
 ARM CORTEX M3 is next generation core with
enhanced debug features, supports high level
integration.

9. LPC1343 has
 32kb flash memory.
 8kb of data memory(SRAM).
 USB device.
 One UART.
 Four general purpose timers.
 42 general purpose I/O pins.

10. REGULATED POWER SUPPLY:

11.  Ultrasonic sensor provides an easy method of distance
measurement.
 This sensor is perfect for any number of applications that
require you to perform measurements between moving
or stationary objects.
 Interfacing to a microcontroller is a snap.
 A single I/O pin is used to trigger an ultrasonic burst
(well above human hearing) and then "listen" for the
echo return pulse.

12. Application Ideas:
 Security systems
 Interactive animated exhibits
 Parking assistant systems
 Robotic navigation

13. A buzzer or beeper is an audio
signalling device,
which may be mechanical,
electromechanical, or piezoelectric.
Typical uses of buzzers and beepers
include alarm devices, timers and
confirmation of user input such as a
mouse click or keystroke.
BUZZER:

14.  The block diagram explains us how the unit works.
 The Ultrasonic Spectacles and Waist-belt for Visually
Impaired and Blind people explains the interfacing
section of each component with micro controller and
ultrasonic sensor.
 Regulated power supply is also connected to micro
controller and LED’s also connected to micro controller
through resistors.

15.  Micro controller IDE(for writing the code):KEIL MDK
411.
 Programmer application(for dumping the code):JTAG
DEBUGGER.
 Simulation software: PROTEUS 8.
 Application software: Embedded c.

16.  Guides blind people.
 Alerts through voice based messages system.
 Obstacle detection using ultrasonic distance
finder sensor
 Efficient low cost design.
 Low power consumption.

17.  It works as a navigation device for the blind people .
 This system can be used to navigate by everyone not only
visually impaired under certain circumstances , like foggy
mornings with low visibility. Some winter mornings are foggy,
where the visibility is very low, then this system can be used.
 This system can also be used by patients suffering with
various eye ailments like cataract, exophthalmia, post eye
operative situations and others.
 This system can be modified into a more sophisticated version
of itself by using high intensity ultrasonic waves to be used
as a navigation system for geological explorations.

19. CONCLUSION:
This device will help the blind person be more
alert about the obstacles.
This project is mainly for the blind people to
avoid obstacles by themselves.
This project provide efficient and a economical
security system

20.  It can detect the obstacle presence from a longer
distance and also helps in increasing the efficiency of
the system.