These proximity sensors are designed using active infrared sensors, consisting of a pair of IR source and an IR detector. The most simple kind of proximity sensor is the optical one. These sensors come in a wide range according to their technology and distance of sensing. The optical and ultrasonic proximity sensors have much general use and are quite common among electronics. The capacitive, inductive, and magnetic proximity sensors are used in specific electronic applications. There are different types of proximity sensors like optical, ultrasonic, capacitive, inductive, and magnetic. ![]() These sensors are useful in many applications like collision avoidance, obstacle detection, path following, touchless sensing, motion detection, and object detection. Proximity sensors are used to detect something approaching near.
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