Proximity sensors are devices that are engineered to detect any objects in close proximity without establishing any physical contact with the object. They can accurately determine the closeness of the object by using different factors like light, sound, electromagnetic fields, and infrared or IR radiation.
Being non-contact sensors, proximity sensors are often considered ideal for a wide range of environments. They are versatile sensors as well, capable of detecting the motion of both metallic and non-metallic objects, and even in water or oil levels. Proximity sensors can be used across a wide range of temperatures from -50 degrees C to 100 degrees C.
Types of proximity sensors
There are different types of proximity sensors available. These include:
Infrared sensors (IR Sensor)
These types of infrared sensors use infrared radiation to determine objects.
Inductive proximity sensors
These use an oscillating circuit to generate an electromagnetic field and detect close objects.
Capacitive proximity sensors
They are capable of detecting almost all shapes and materials and are ideal for close-range detection.
Ultrasonic proximity sensors
Ultrasonic types of proximity sensors are ideal for use over longer distances.
Magnetic proximity sensors
They use an external magnetic field to detect the presence of objects.
Applications of proximity sensors
Proximity sensors are widely used across different applications and industrial environments, including: