Essentials Of Engineers: Close To The Secret Behind The Sensor

Near the sensor is a non -contact detection device that can be used to detect whether the target is close, also known as close switch.According to the different detection principles, close to the sensor can be divided into three types: inductance, capacitance and electromagnetic.

The detection object of inductance is mainly metal objects.The load of the oscillating circuit has increased, and the amplitude decreases or even stops.The sensor determines whether there is a target existence by detecting changes in the amplitude.

The detection objects close to the sensor include metal and non -metals (such as plastic, liquid level height, powder height, etc.).Its working principle is to use the sensor capacitor plate and the distance between the measured objects to cause the capacitor value change, thereby detecting the movement of the object.

The detection object of the electromagnetic type is mainly known as the magnetic material.Its working principle is to use magnetic lines to interact with the subject to determine whether the object is approaching by detecting changes in magnetic flux.

The characteristics of close to the sensor are mainly the following points: it can detect objects non -contact, effectively avoid damage to the measured objects; use no contact output and long service life; it also has excellent environmental adaptability and can be in bad harsh.Stable detection in the environment; at the same time, the response speed is fast and can quickly respond to the movement of the object; in the end, its installation method is flexible and can be installed in different ways as needed.

When installing close to the sensor, you need to pay attention to the following points: First of all, if multiple sensors are installed on side by side, the interval between them must be appropriate to avoid interference with each other. SecondDifferent sizes need to be selected according to the actual situation.It should be noted that for non -Qiping close to the sensor, you need to ensure A = 1x diameter, B = 2X diameter, C = 1x diameter; for Qiping to be close to the sensor, you need to ensure B = 1x diameter, C = 1x diameter.