Introduction of sensors

What is a sensor?

A device that receives a stimulus and responds with an electrical signal.

A special type of transducer (device that converts one type of energy into another

Two basic categories:

  • 1. Analog
  • 2. Discrete
    • Binary
    • Digital (e.g., pulse counter)

Examples

  • 1. Temperature
  • 2. RFID
  • 3. Barcode
  • 4. Proximity
  • 5. Vision
  • 6. Gyroscope
  • 7. Compass
  • 8. Tilt/Acceleration