The key to whether the proximity sensor is working or not depends on this parameter!

Latest update time：2024-01-10

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Q: Frequency response of proximity sensor

When an object passes through the sensing area of the proximity sensor at a certain speed , the response frequency of the proximity sensor determines whether it can correctly detect the object.

Omron 1 E2B-S08KS02-WP-C1 2M

( Images are for reference only, please refer to product specifications. )

The response frequency of the proximity sensor indicates the maximum movement speed or time interval of the measured object that enables the proximity sensor to respond correctly. In other words, a lower response frequency parameter (e.g. 10-100 Hz) indicates that the sensor is able to correctly sense slower moving objects. If an object passes through the sensing area of a 100Hz proximity sensor in less than one hundredth of a second, the sensor is not guaranteed to correctly sense the object.

Proximity sensors with lower response frequencies are usually used for power equipment and human body position detection.

On the other hand, a higher frequency response parameter (e.g. up to 5k to 10kHz) means that the device can sense fast-moving objects or sudden transient reactions, such as industrial control or instant shutdown in the event of an industrial accident.