As we all know, laser cutting machine is a combination of a variety of hardware devices and a software operating system, the combination of hardware and software to form a complete and efficient laser pointer cutting machine, all parts have their own independent mission, but , One of the most important parts is the sensor. In order to improve the cutting quality and reduce the generation of waste, it is necessary to install some special sensors on the cutting head to ensure that it can produce stable and consistent cutting quality, but also can increase the process safety.

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Displacement sensors can be divided into contact and non-contact two types, compared with contact sensors, non-contact sensors to ensure high resolution at the same time, with dynamic response speed, low lag error advantages. Non-contact sensors, sometimes referred to as proximity sensors, the earliest applications are proximity switches, that is, when the detected object is close to a sensitive probe, a switch signal is given because it can be used to displace the moving object So that these sensors are also known as non-contact displacement sensor, commonly used displacement sensor with hysteresis telescopic displacement sensor, eddy current displacement sensor, capacitive displacement sensor, inductor displacement sensor.
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