[TEMI]

باسم الله الرحمن الرحيم
هل هناك طريقة لاستخدام الكاشف الحراري lm335 في حالة تعدر ايجاد lm35
ان كان الجواب نعم فماذا يجب استبداله في الدارة والكود .

متالاا في المشروع اسفله un thermométre par afficheur LCD


الدارة ب lm35

http://im59.gulfup.com/2069e7.png

+

http://www.mobdi3ine.net/up/img1396620775981.bmp


والكود سورس


// modules LCD connections
sbit LCD_RS at RB2_bit;
sbit LCD_EN at RB3_bit;
sbit LCD_D4 at RB4_bit;
sbit LCD_D5 at RB5_bit;
sbit LCD_D6 at RB6_bit;
sbit LCD_D7 at RB7_bit;

sbit LCD_RS_Direction at TRISB2_bit;
sbit LCD_EN_Direction at TRISB3_bit;
sbit LCD_D4_Direction at TRISB4_bit;
sbit LCD_D5_Direction at TRISB5_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// Fin modules LCD connections

int t;
char a;
char lcd[] = "000 Degree";

void main()
{
ADCON1 = 0x04;
Lcd_Init();
Lcd_Cmd(_LCD_CURSOR_OFF);

do
{
Lcd_Cmd(_LCD_CLEAR);
Lcd_out(1,1, "Temperature:");
t = ADC_Read(0);

t = t * 0.4887; // 4.887 est la resolution du convertisseur ADC
a = t%10;
lcd[2] = a + '0';

t = t/10;
a = t%10;
lcd[1] = a + '0';

t = t/10;
a = t%10;
lcd[0] = a + '0';

Lcd_out(2,1,lcd);
Delay_ms(100);
}while(1);
}

[حمودي الحلو]

السلام عليكم
هذا نص بحث
مهندس هندي

Temperature sensor by LM335, LCD, PIC16F877A
The LM335 temperature sensor is an easy to use, cost-effective sensor with decent accuracy (around +/- 3 degrees C calibrated). The sensor is essentially a zener diode whose reverse breakdown voltage is proportional to absolute temperature. Software used:
Than the micro controller read this voltage of LM35 and after calculations display on the LCD
a. MickroC PRO
b. Proteous 7.7


BEST OF LUCK.

Engr Rana Muhammad Shakeel
Engnr.shakeel*gmail.com
+92-333-4962507
https://www.facebook.com/EngnrShakeel
plz like my page:
https://www.facebook.com/Electrical4Electronics












Circuit Diagram








Code:

								// Program to make a Liquid level                    /*Header******************************************************/

// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections


  int temp;
char txt[8];
unsigned char ch;                    //
unsigned int adc_rd;                 // Declare variables
char *text;                          //
long tlong;                          //
 void introduction (void)
 {
 

Lcd_Cmd(_LCD_CLEAR);             // LCD command (clear LCD)
  text = " Tempeature  ";       // Define the first message
  Lcd_Out(1,1,text);               // Write the first message in the first line
  text = "by PIC16F877A";            // Define the second message
  Lcd_Out(2,1,text);               // Define the first message
   Delay_ms(1000);
    Lcd_Cmd(_LCD_CLEAR);
  text = "Engnr Rana M";       // Define the first message
  Lcd_Out(1,1,text);               // Write the first message in the first line
   Delay_ms(1000);
  text = "   Shakeel   ";            // Define the second message
  Lcd_Out(2,1,text);               // Define the first message
   Delay_ms(2000);
   Lcd_Cmd(_LCD_CLEAR);             // LCD command (clear LCD)
   text = " Temperature ";       // Define the first message
 Lcd_Out(1,1,text);

 }
void main() 
{
    TRISA = 0xFF;

      trisB=0x00;
      portb=1;
      adcon1=0x00;
    Lcd_Init();                      // LCD display initialization
    Lcd_Cmd(_LCD_CURSOR_OFF);        // LCD command (cursor off)
    Lcd_Cmd(_LCD_CLEAR);             // LCD command (clear LCD)
    ADCON1 = 0x82;                   // A/D voltage reference is VCC
    TRISA = 0xFF;                    // All port A pins are configured as inputs
    Delay_ms(1000);
      introduction (void);
    text = "Temp: ";               // Define the third message
     Delay_ms(1000);
    while (1) {
       adc_rd = ADC_Read(0);        // A/D conversion. Pin RA2 is an input.
        Lcd_Out(2,1,text);           // Write result in the second line
        temp=(adc_rd - 559.567) / 2 ;
        inttostr(temp,txt);            // convert integer into string
             Lcd_Out(2,5,txt);
              Lcd_Chr_CP('C');           // display  character
           Delay_ms(1);
     
    }
}

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