Photoelectric Switch With Small Size, Many Functions, Long Life, High Precision
The definition of photoelectric switch: This product takes the light source as the medium, applies the photoelectric effect, when the light source is obscured by the object or produces the reflection, the radiation and the shading causes the light quantity change to detect the object has the size and the dark and the shade, but to produce the contact and the no contact output signal The photoelectric switch includes several types, which do not have a light source, detecting the amount of light that is emitted by the object being measured, the amount of change that is produced by the object obscuring the natural light by the illumination of the photoelectric switch; the photoelectric switch itself has a source, and the light source is used to detect the change of the reflected, absorbed and transmitted light of the object. Commonly used light source for ultraviolet light, visible light, infrared light and other bands of light source, the type of light source has a light bulb, LED, laser tube, etc., the output signal has a switch volume or analog volume and communication data information.
Photoelectric switch has been used in crop level detection, liquid level control, product count, width discrimination, speed detection, fixed length shearing, hole recognition, signal delay, automatic door sensor, color standard detection, punching and shearing machine, and safety protection and many other fields. In addition, the use of infrared stealth, but also in banks, warehouses, shops, offices and other needs of the occasion as a security alert.
Photoelectric switch (photoelectric sensor) is the abbreviation of photoelectric proximity switch, it is the use of the detection of the light beam occlusion or reflection, from the synchronization circuit to select the power path, so as to detect the object. Objects are not limited to metals, and all objects that reflect light can be detected. The photoelectric switch converts the input current on the transmitter to a light signal, and the receiver detects the target by the intensity of the received light or the object. Security system common photoelectric switch smoke alarm, industry often use it to count the number of mechanical arm movement.
Photoelectric switch is an active photoelectric detection system type electronic switch using pulse modulation, it uses a cold source of infrared light, red light, green light and blue light, etc., can be non-contact, without damage to the rapid and control of various solids, liquids, transparent, blackbody, soft body and smoke and other substances in the state and movement. It has the advantages of small volume, many functions, long life, high precision, fast response speed, far detection distance and strong ability of resisting light, electric and magnetic interference.