IR Sensor based visitor counter
IR Sensor based visitor counter:
Description:
In this project we are used simple IR Sensors, IR transmitter led and IR Receiver Led using LM358 circuit.IR Led supply voltage is +5v the output of the IR in this particular circuit is normally LOW 0 volt, the obstacle will cross the IR LED output is High > 4 volt.In this project the output of the IR LED pin is connected to the 8051 micro controller port pin P1.0. In this project 2*16 LCD is use to display the counting numbers. The LCD circuit RS pin P3.6 and E/N pin is P3.7 and DATA Pin is connected to PORT 0. In this project port 2 LED is connected to display the counting numbers in the LED also..In this project is used for bottle counting in the bottling plant like coca-cola, Pepsi, in this project slightly modification to display in the 7segment display also..
C Code:
/*program for IR Sensor based VISITOR COUNTER */
#include
#include
#define LCD_clear() LCD_command(0×01) /* Clear LCD Display
#define LCD_orgin()LCD_command(0×02) /* set to orgin LCD
#define LCD_row1() LCD_command(0×80) /* Begin at 1st line
#define LCD_row2()LCD_command(0xc0) /* Begin at 2nd line
sbit port10=P1^0; //IR Sensor Input
sbit rs=P3^6; //Lcd Register Select Pin
sbit en=P3^7; //Lcd Enable Pin
static unsigned char counter;
void lcd_en() //Funtion for LCD Enable
{
en=1;
en=0;
}
void LCD_delay(unsigned char ms) //Function for create Time Delay
{
unsigned int n,i;
for(n=0;n
for(i=0;i<1536;i++);
}
}
void LCD_command(unsinged char command) //LCD Command Pass Funtion
{
rs=0;
P0=command;
lcd_en();
LCD_delay(1);
}
void LCD_init() //LCD intialization funtion
{
LCD_command(0x38);
LCD_command(0x06);
LCD_command(0x0c);
LCD_command(0x01);
}
void LCD_putc(unasigned char ascii)
{
rs=1;
P0=ascii;
lcd_en();
LCD_delay(2);
}
void LCD_puts(unsigned char *lcd_string)
{
while(*lcd_string)
{
LCD_putc(*lcd_string++);
}
}
void disp(unsinged char name1)
{
rs=1;
P0=name1;
lcd_en();
lcd_delay(300);
}
void main()
{
port10=0; //make P1.0 as init=0, initially all port pins are high
P2=0; //make low for P2
LCD_init(); //call LCD initialization function
while(1) //Run forever always true
{
if(port10) //check condition P2.0 is high P2.0==1
{
LCD_command(0x80); //LCD command for display first line
LCD_puts("visit count="); //String display in the LCD
{
disp(((counter%10000)/1000)+48);
disp(((counter%1000)/100)+48);
disp(((counter%100)/10)+48);
disp(((counter%10)/1)+48);
}
}
P2=counter; // 8 LED's conneted in PORT 2
LCD_comman(0xc0) //LCD command for display 2nd line
LCD_puts("www.embed4u.com");
}
}
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