What is temperature sensor MLX90614?

The MLX90614 is a Contactless Infrared (IR) Digital Temperature Sensor that can be used to measure the temperature of a particular object ranging from -70° C to 382.2°C.

How does infrared temperature sensor work?

Infrared thermometers employ a lens to focus the infrared light emitting from the object onto a detector known as a thermopile. The thermopile is nothing but thermocouples connected in series or parallel. When the infrared radiation falls on the thermopile surface, it gets absorbed and converts into heat.

How does a body temperature sensor work?

How do temperature sensors work? They are devices to measure temperature readings through electrical signals. The sensor is made up of two metals, which generate electrical voltage or resistance once it notices a change in temperature.

What is output of MLX90614?

The MLX90614 provides two methods of output: PWM and SMBus (i.e. TWI, I2C). Both these outputs are easy and simple to use with Arduino, Raspberry Pi and other micro controllers. The 10-bit PWM output provides a resolution of 0.14°C, while the TWI interface has a resolution of 0.02°C.

Do IR sensors detect heat?

An infrared sensor is an electronic instrument that is used to sense certain characteristics of its surroundings. It does this by either emitting or detecting infrared radiation. Infrared sensors are also capable of measuring the heat being emitted by an object and detecting motion.

What is the working principle of sensor?

A sensor is a device that responds to some type of the input from the environment such as heat, light, motion, temperature, pressure and moisture. Sensors are used to switch currents and voltages. Every sensor has three terminals: Vcc, GND and output.

What is the output of the temperature sensor?

The TMP35 provides a 250 mV output at 25°C, and reads temperature from 10°C to 125°C. The TMP36 is specified from −40°C to +125°C. and provides a 750 mV output at 25°C. Both the TMP35 and TMP36 have an output scale factor of +10 mV/°C.

What is inside MLX90614?

Internally, the MLX90614 is a pairing of two devices: an infrared thermopile detector and a signal-conditioning application processor.