Question

Why we use proximity sensor IN Automatic car parking project that using Arduino , explain that ?

Answer 1

Proximity sensor is a device used to sense or detect the objects nearby by using technology inside the sensors.

A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor targets demand different sensors. For example, a capacitive proximity sensor or photoelectric sensor might be suitable for a plastic target; an inductive proximity sensor always requires a metal target

In automatic car parking system proximity sensor senses the object and and sends back the signal to the arduino microcontroller and so the microcontroller stops or decelerates the car from hitting the object.