Typical applications of different types of sensors such as application of Speed sensor for synchronizing the speed of multiple motors, Temperature sensor application for industrial temperature control, application of the PIR sensor for automatic-door-opening system, Ultrasonic sensor application for distance . Typical examples of pressure sensors are strain gauges, capacitive pressure sensors and piezoelectric pressure sensors. The strain gauges work on the principle of change in resistance with application of pressure where as the piezoelectric pressure sensors work on the principle of change in voltage . This article discusses types of Optical Sensors, Through-beam sensors, Retro- Reflective Sensors, Diffuse Reflection Sensors , applications of optical sensors. All these and many other automation tasks are possible because of Sensors.
Usually, the output of the sensor will be in the form of an electrical signal or optical signal.
In our daily life, we use different types of sensors frequently in various applications like the Infrared .