Human Eye Ball recognition system

Transcription

1 Human Eye Ball recognition system Reg no: 10MSE1099 Name:M.V.Raam Vignesh Year: 2Year,III Semester College name: VIT University, Chennai Date:22/11/12

2 Abstract: The main scope of the project is to bring an interaction between people those who have Duchenne Muscular Dystrophy. They can t use their hands. Instead of that if they want to communicate and use computers we can use their eye ball movement to capture so that they can handle mouse and keyboard movements. As of now the little mouse actions such as move up,left,right have been captured since the sensor cannot detect eye movements accurately. By choosing accurate sensors the full mouse action can be brought instead of stepping into Human computer Interaction technology which is expensive. Aim: The aim of the project is to interaction between the user and the computer those who can t use their hands. Introduction: Here the Microcontroller used is ATMEL AT89S52,ADC bit analog to digital converter, Max 232 which is used for serial communication(it receives signal from Microprocessor and converts the logic voltage level in which the computer operates) Proposed Work: As of now the 8 bit microcontroller is programmed and it s ready. Program in Java is also ready. Only 4 actions have been brought

3 because the sensor we use here is Infrared Sensor. In future I am planning to work on full mouse and keyboard action capabilities. Working Principles: By getting user input the program is embedded in microcontroller. The values may range from as it is a 8bit controller 2^8.For my eye the value ranges from and etc. Embedded C program is written and fed inside the microcontroller. In the java program similarly the ranges are written and suppose if the values are mismatched the motion won t be detected. If the values match the motion will be detected which will take place because of Level Controller IC 232. By getting user input the program is embedded in microcontroller. The values may range from as it is a 8bit controller 2^8.For my eye the value ranges from and etc. Embedded C program is written and fed inside the microcontroller. In the java program similarly the ranges are written and suppose if the values are mismatched the motion won t be detected. If the values match the motion will be detected which will take place because of Level Controller IC 232.

4 Diagram:

5 Snapshot:

6 coding embedded in Atmel processor for the address value that computer selects for my eyes: Here the microcontroller is programmed with keilu vision 4 software and Atmel programmer. #include<regx51.h> #define dataport P2 #define adc_port P1 unsigned char X; sbit ADD_A=P0^0; sbit ADD_B=P0^1; sbit ADD_C=P0^2; sbit rs=p3^5; sbit rw=p3^6; sbit en=p3^7; void delay(unsigned int msec) //Time delay function int x,y; for(x=0;x<msec;x++)

7 for(y=0;y<1275;y++); void lcd_cmd(unsigned char item) //Function to send command dataport=item; rs=0; rw=0; en=1; delay(1); en=0; return; void lcd_data(unsigned char item) //Function to send data dataport=item; rs=1; rw=0; en=1; delay(1); en=0; return;

8 void transmit_data(unsigned char a) SBUF=a; while(ti==0); TI=0; void adc_conversion(unsigned char value) unsigned char a,b,c; a=value%10; b=(value/10)%10; c=value/100; transmit_data(c+48); transmit_data(b+48); transmit_data(a+48); transmit_data(0x0d); void conv_lcd(unsigned char value) unsigned char a,b,c; a=value%10; b=(value/10)%10; c=value/100; lcd_data(c+48);

9 lcd_data(b+48); lcd_data(a+48); void lcd_string(unsigned char *str) int l=0; while(str[l]!='\0') lcd_data(str[l]); l++; delay(10); return; void lcd_init() lcd_cmd(0x38); lcd_cmd(0x0e); lcd_cmd(0x01); lcd_cmd(0x80); lcd_string("eye BALL SENSING");

10 unsigned char adc1,adc2; void main() P0=0xFF; lcd_init(); //serial intializing and baud rate TMOD=0x20; SCON=0x50; TH1=0xFD; TR1=1; //selecting the channel

11 while(1) ADD_A=0; ADD_B=0; ADD_C=0; //Forever loop port adc1=adc_port; //read datas from the adc lcd_cmd(0xc0); lcd_string("l'e:"); conv_lcd(adc1); //Send the read value to P3 adc_conversion(adc1); delay(2); // ++ /* datas from the adc port ADD_A=0; ADD_B=0; ADD_C=1; adc2=adc_port; //read lcd_cmd(0xc9); lcd_string("r'e:");

12 conv_lcd(adc2); to P3 lcd_data(':'); //Send the read value transmit_data(adc2); delay(2); if((adc1>150&&adc1<160)&&(adc2>150&&adc2<160)) transmit_data('n'); lcd_cmd(0xc4); lcd_data('n'); else if((adc1>130&&adc1<140)&&(adc2<150&&adc2>160)) transmit_data('l'); lcd_cmd(0xc4); lcd_data('l'); else if((adc1>140&&adc1<150)&&(adc2<150&&adc2>160))

13 transmit_data('r'); lcd_cmd(0xc4); lcd_data('r'); else if((adc1>120&&adc1<130)&&(adc2>140&&adc2<150)) */ transmit_data('u'); lcd_cmd(0xc4); lcd_data('u'); else if((adc1>80&&adc1<90)&&(adc2>130&&adc2<140)) transmit_data('d'); lcd_cmd(0xc4); lcd_data('d');

14 Configuration: IR sensor with range selector using potentiometer Atmel AT89S52 Microcontroller ADC 0809CCN Analog to digital converter MAX 232-Level converter µvision 4 IDE for programming ATMEL Net beans IDE for developing Java Interface

15 PIN diagram:

16 Conclusion: Thus the IR system is made to work according to Human eye movements. Thank you, M.V.Raam Vignesh