This document describes a vehicle accident prevention system using an eye blink sensor. The system uses an IR sensor to detect a driver's eye blinks and a microcontroller to process the sensor data. If no eye blinks are detected for a period of time, indicating potential drowsiness, the system will stop the vehicle and trigger an alarm to prevent accidents. The system could also be expanded in the future to detect alcohol and stop the vehicle if the driver is intoxicated.

1. VEHICLE ACCIDENT
PREVENTATION USING EYE
BLINK SENSOR
PROJECT GUIDE
D.KISHORE M.Tech(Ph.D)

2. ABSTRACT
 Accidents are increasing at a large pace, and
various technologies are being introduced to
reduce the accidents.
 Inthis project we provide by means of accident
prevention using eye blink where as the vehicle
is stopped immediately and intimated wherever
needed.

3. OVERVIEW
 INTRODUCTION
 BLOCK DIAGRAM OF TRANSMITTER
 BLOCK DIAGRAM OF RECEIVER
 MICROCONTROLLER
 PIN DESCRIPTION
 EYE BLINK SENSOR AND COMPARATOR CIRCUIT
 RF COMMUNICATION
 ENCODER AND DECODER
 MOTOR
 POWER SUPPLY UNIT
 LCD DISPLAY
 LCD INTERFACING
 SOFTWARE SED
 PROGRAM
 CONCLUSION
 FUTURE SCOPE

4. INTRODUCTION
 Vehicle accidents are most common if
the driving is inadequate.
 Driver drowsiness is recognized as an
important factor in the vehicle accidents.
 This project involves measure and
controls the eye blink using IR sensor.
The IR transmitter is used to transmit the
infrared rays in our eye.

5. POWER SUPPLY UNIT

6. BLOCK DIAGRAM OF TRANSMITTER
EYE Blink RF
Sensor Transmitter
Microcontroller
AT89S52
comparator Encoder

7. BLOCK DIAGRAM OF RECEIVER
DC Motor
RF
Receiver
Microcontroller Buzzer
AT89S52
Decoder
LCD
Display

8. MICROCONTROLLER(AT89S52)
Pin Diagram

9. Pin Desciption
 Low power, high performance CMOS 8 bit microcontroller.
 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines two data
pointers, three 16-bit timer/counters, a six-vector two-level
interrupt architecture
VCC PSEN
GND EA/VPP
PORT 0 XTAL1
PORT 1 XTAL2
PORT 2
PORT3
RST
ALE/PROG

10. RF COMMUNICATION

11. RF COMMUNICATION
TRANSMITTER:
• Low Cost
• 1.5-12V operation
• Small size
RECEIVER:
• operates at 4.5 to 5.5 volts

12. ENCODER &DECODER

13. MOTOR (L293D)
L293D Pin description
Logic Diagram
Functional description

14. POWER SUPPLY UNIT

15. LCD DISPLAY
• LCD display consists of two lines, 20
characters per line.
• 3 control lines and 8 I/O lines.
- 8 data pins D7:D0
- RS: Register Select
- R/W: Read or Write
- E: Enable (Latch data)

16. LCD INTERFACING

17. SOFTWARE USED
 Keil compiler is the software used where the
machine language code is written and compiled.
 The machine source code is converted into hex
code, this hex code is dumped into the
microcontroller for further processing.

18. PROGRAM
#include<reg51.h>
//#include<lcd.h>
sbit s1=P1^4;
sbit s2=P1^5;
sbit s3=P1^6;
sbit s4=P1^7;
sbit r1=P1^0;
sbit r2=P1^1;
sbit r3=P1^2;
sbit r4=P1^3;
sbit rs=P3^7;
sbit en=P3^6;
void delay(unsigned int ch) //delay function
{
unsigned int i=0,j=0;
for(i=0;i<=ch;i++)
{ for(j=0;j<=i;j++)
{
}
}
}
void clcd(unsigned char ch)
{
P2=ch;
rs=0; en=1;
delay(15);
en=0;
}

19. void dlcd(unsigned char ch)
{
P2=ch;
rs=1;
en=1;
delay(15);
en=0;
}
void stringlcd(unsigned char ch,unsigned char *chrt)
{
unsigned int ix=0;
if(ch==0x80)
clcd(0x01);
clcd(ch);
for(ix=0;chrt[ix]!='0';ix++)
{
dlcd(chrt[ix]);
}
}
void initlcd()
{
clcd(0x38);
clcd(0x0e);
clcd(0x06);
clcd(0x01);
clcd(0x80);
◦ }
void main()
{
P1=0x00;
initlcd();
stringlcd(0x80,"hai");

20. while(1)
{
if(s1==0) //front
{
r1=1;
r2=0;
r3=1;
r4=0;
stringlcd(0xc0,"front ");
}
else if(s2==0)
{
r1=0;
r2=1;
r3=0;
r4=1;
stringlcd(0xc0,"back ");
}
else if(s3==0){
r1=1;
r2=0;
r3=0;
r4=1;
stringlcd(0xc0,"left "); }
else if(s4==0){
r1=0;
r2=1;
r3=1;
r4=0;
stringlcd(0xc0,"right ");}
else {
r1=0;
r2=0;
r3=0;
r4=0;stringlcd(0xc0,"stopped ");}
delay(300);

21. CONCLUSION
 Reduce the number of accidents.
 It is also used for security alerts where 24
hours surveillance is required.

22. FUTURE SCOPE
 This is extended with alcoholic
detection also.
 If the person took alcohol who is
driving then the vehicle will be stopped
immediately by giving alarm .s

23. THANK YOU