What is the working principle of a proximity sensor?

Question

Accepted Answer

Proximity sensors work by detecting the presence or absence of an object without physical contact.

Proximity sensors emit electromagnetic fields or beams of radiation to detect the presence of an object.
When an object enters the sensor's field, it reflects the radiation back to the sensor, triggering a response.
There are different types of proximity sensors such as inductive, capacitive, ultrasonic, and photoelectric sensors.
Proximity sensors are commonly used in industrial automation, robotics, and automotive applications.

Accepted Answer

proximity sensors operate under the electrical principle of magnetism when a fluctuating current induces the voltage in a target object. The proximity sensor contains a certain type of solid-state control system. It contains an oscillator circuit that generates a high-frequency magnetic field.And there are type proximity sensor

1 inductive proximity sensor

2 optical proximity sensor

3 capacitive proximity sensor

4 magnetic proximity sensor

5 Ultrasonic proximity sensor

Asked in Eimco Elecon (India) and 3 others

What is the working principle of a proximity sensor?

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