Types of Proximity sensor and applications| How proximity sensor works

Описание: Proximity sensor often emits a beam of electromagnetic radiation (infrared for instance), and looks for changes in the field of return signal; that how proximity sensor detects the presence of nearby objects without any physical contact. Depend on the product material to be sensed, proximity sensors can can be broadly categories in 3 types: Inductive, Capacitive & Photoelectric. Here below is an explanation of their working principal