3.2.3. Working Principles

Try these first

1. 1.

   What type of sensing detects temperature changes?

   Hint

   Think about how we measure heat.

2. 2.

   What does a gyroscope measure?

   Hint

   Consider how it helps in navigation.

3. 3.

   What type of sensing detects motion by measuring capacitance changes?

   • Piezoelectric
   • Capacitive
   • Thermal

   Hint

   This method is widely used in touch screens.

4. 4.

   True or False: Piezoresistive sensors measure resistance changes from pressure.

   • True
   • False

   Hint

   Consider how changing force on a conductor would affect its resistance.

5. 5.

   Design a MEMS sensor system for detecting and measuring temperature variations in an industrial setting using thermal sensing.

   Hint

   Consider the practical applications of thermal sensing in machinery.

6. 6.

   Evaluate the effectiveness of piezoelectric sensors in a medical device designed for monitoring heartbeats.

   Hint

   Think about how a heart monitor works and the signals it picks up.