What are the main categories of photoelectric sensors
The light curtain sensor electronic component detection field has extremely important applications. In the signal conversion, the photoelectric signal conversion is quite difficult. One is energy loss, and the other is the efficiency and quality of the photoelectric signal conversion due to the intervention of certain internal and external environments. Affected by interference and influence, the high-quality infrared light curtain has been supported by many industries after its launch.
1. Slotted
The safety curtain sensor guarantees quality and quantity. The light transmitter and receiver are installed on both sides of the groove. The light transmitter can emit infrared or visible light, and the light receiver can receive light without obstacles. But when the detected object passes through the slot, the light will be blocked, and the photoelectric switch will move and output a reliable switch control signal. After cutting off or opening the load current, a control action is completed. Because the detection distance of the limit switch of the entire structure is short .
2. Backlight
If the optical transmitter and the receiver are separated, the detection distance can be increased. The photoelectric switch composed of the safety sensor and the receiver is called the anti-radiation isolation photoelectric switch for short. Its detection range can reach several meters or even tens of meters. When in use, the optical transmitter and optical receiver are installed on both sides of the path passed by the detector, and the receiver starts to output switch control signals when the optical path is blocked when the detector passes.
3. Reflective
The safety light barrier sensor is powerful, that is, the light transmitter and the receiver are installed in the same device. A reflector is installed in front of the light transmitter and the receiver. The reflector (or mirror) photoelectric switch uses the principle of reflection to complete the photoelectric control function . Normally, the light emitted by the Safety light curtain sensor is reflected by the reflector and then received by the receiver. When the light path is blocked by the detected object and the receiver cannot receive the light, the photoelectric switch performs an action and outputs a switch control signal.
In addition to the above safety light sensors, there are special sensors that are specially used as detection equipment. Its price is higher and the degree of customization is stronger. Other sensor types can also be customized according to the actual needs of the enterprise. The functionality and practicability of the sensor have been improved, so it has received a high rate of positive response from all walks of life.
