6.2.4. Thermal Sensing

Try these first

1. 1.

   What principle does thermal sensing rely on?

   Hint

   Think about how materials respond to heat.

2. 2.

   Name an application of thermal sensors.

   Hint

   Consider where temperature tracking is crucial.

3. 3.

   Which principle is primarily used in thermal sensing?

   • Thermal contraction
   • Thermal expansion
   • Thermal diffusion

   Hint

   Consider how heat affects material properties.

4. 4.

   True or False: Thermal sensors have a fast response time.

   • True
   • False

   Hint

   Think about the characteristics of thermal sensors.

5. 5.

   A MEMS thermal sensor measures the resistance of a thermistor at varying temperatures. At 25°C, the resistance is 10 kΩ, and at 75°C, the resistance drops to 2 kΩ. Calculate the temperature coefficient of resistance.

   Hint

   Remember to convert temperature from Celsius to Kelvin if needed.

6. 6.

   Discuss how thermal sensors can be implemented in smart homes for optimizing HVAC systems.

   Hint

   Think about the role of temperature control in smart technology.