Proximity Sensors
*Definition:
A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic or electrostatic field, or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal.
*Types of proximity sensors:
· Inductive
· Capacitive
· Sonar
· Radar
*Applications:
* Car bumpers that sense distance to nearby cars for
parking.
*Ground proximity warning system for aviation safety.
* Automatic Door Sensors manufacturers.
References:
ar.wikipedia.org/wiki/
www.sensors-transducers.machinedesign.com/
