Photoelectric switch manufacturers introduce the photoelectric switch which several kinds of classification methods

Photoelectric switch manufacturers claim that different standards and classification methods are used when classifying various photoelectric switches, and they represent different attribute categories. Some classification methods have a certain degree of intersectionality. When choosing a photoelectric switch, you cannot pass a certain classification method. The choice of a single classification method should be integrated with the use needs to make a comprehensive and multi-level targeted selection. The following high-temperature resistant photoelectric switch manufacturers introduce how many classification methods are there for photoelectric switches?

1. Classification by detection method

The first is the light quantity method. At present, most photoelectric switches use the light quantity method to detect the presence or absence of an object. That is, the light source is shaded by the object or reflected, and the amount of light received by radiation and shading changes to detect the presence or absence of the object. In addition, the photoelectric switch manufacturer also introduced the triangular distance measurement method. The light quantity method is easily affected by the surface finish, roughness and color of the object. Therefore, the distance method needs to be used in some high-demand occasions. In the laser measurement method, a laser emits a light signal to the measured target, and then receives the light signal reflected by the target. The photoelectric switch manufacturer claims that it calculates the distance of the target by measuring the back and forth time of the optical signal.

2. Classification according to the type of light source

Photoelectric switch manufacturers claim that most of the light sources currently used are light-emitting diodes that are used differently according to different purposes. Incandescent lamps (visible light) are used for sign detectors that require white light. Due to their life and shock resistance, they are now less used. Light-emitting diode (LED) type (visible light, near-infrared light) has the advantages of easy modulation, long life, small size, low power consumption, and shock resistance. It is an ideal light source for photoelectric switches. Photoelectric switch manufacturers claim that it can be used for various purposes. Fluorescent type ( Visible light) is mainly used for photoelectric systems (image sensors, etc.) that require length, and ultraviolet light (invisible light) is used to detect visible light objects (fluorescence finishing defects, foreign objects in food, etc.) by irradiating ultraviolet rays. The gas laser type (visible light) beam is relatively strong, and is used in flaw detection systems, barcode systems, and occasions where strong light attenuation is large. The stable operation of photoelectric switch manufacturers is called steam and flame.

In addition, photoelectric switch manufacturers have also corrected the misunderstandings of some people. Some people think that only high-priced products are needed when purchasing photoelectric switches, but in fact, due to the difference in adaptation to the space environment, high-priced products cannot fully guarantee the applicability. Therefore, the basic principle, component structure and working range of the photoelectric switch must be selected as appropriate. After the installation is completed, the status of the photoelectric switch must also be determined through follow-up investigation.