K9pro - Non Contact Thermometer - IR Sensor

During operation, the K9PRO body thermometer becomes programming errors. The following errors occur.

1. Low temperature error https://www.youtube.com/watch?v=M7diDAbO47k

2. High temperature error https://www.youtube.com/watch?v=qCWsd7BTsfE

3. Don't read the temperature (Body and Ambient)

. . . . . . etc.

So I disassembled the thermometer's IR sensor for reusability. It was also decided to use Arduino Nano to read the sensor data.

1. K9Pro Infrared No - Contact Thermometer
2. Arduino Nano
3. LM324
4. Others ...

The IR sensor needs to be disassembled to bring it out.

The Infrared sensor had to be dismantled to find out what model it was. You can check that it is normal without breaking it. See Step 4.

The sensor has been removed. So i'm found for this sensor model.

Model : STP10DF55

Name : Infrared Thermopile Sensor

Manufacturers : China Factory, Suppliers

Link : https://www.yysensor.com/stp10df55-product/

The sensor can be checked for normal condition without having to damage the body.

When measured with an ohmmeter, the resistance of pins 1 and 3 is 52.9 kОhm, and the resistance of pins 2 and 4 is 65.7 kOhm.

For me, the foundation was grinding to study the sensor.

//The following program is written for body temperature Celcius only.

long int a,b,c,d;
float temp;
void setup() { Serial.begin(9600); }
void loop() {
   a++;
   b = analogRead(A0);
   c += b;
   if ( a >= 1000 )
   {
      c = c/100;    
      d = map(Measure/10, 3346, 3475, 257, 366); // 257 is 25.7C, 366 is 36.6C
      temp = d/10;
      if ( temp >= 32.0 && temp <= 38.0 )
      {
          Serial.println(temp);
          delay(1000);
      } 
   c=0; a=0;
   }
   delayMicroseconds(10);
}

Use the table above if you need to measure more accurately.

To do this, use Infrared Thermopile sensor ISB-TS45D sensor data similar to STP10DF55.

Link : https://www.senbasensor.com/products/infrared-thermopile-sensor-isb-ts45d.html

GOOD LUCK.