Applications of Sensors

1. Collision detection and ground detection

2. Passive Sensors

3. Photocell (LDR): Street light trigger

4. Used in potential divider configuration

5. Light (photons) transfer energy to bound electrons

6. IR, visible, UV

7. Active sensors

8. Emitter: Infrared LED-Detector, Photo-diode (faster) or photo-transistor (sensitive)

9. Used for proximity sensing

10. Responsiveness to a wide range of frequencies