The working principle of the photoelectric curtain: Once powered, the transmitter emits infrared light directly to the receiver, forming a curtain system. The target object placed (or moving) within this system will block some infrared light, preventing the corresponding receiver from detecting the blocked light. The photoelectric curtain uses synchronous scanning to identify blocked light. Initially, a transmitter channel emits a light pulse, and the corresponding receiver simultaneously searches for this pulse. Upon finding it, a scan is completed for that channel, and the process continues to the next channel until all channels are scanned, marking the end of a scanning cycle. This cycle records which beams are passing through and which are blocked, and the system outputs a signal. This signal, in conjunction with the controller and software, enables monitoring, positioning, and the measurement of object dimensions. The photoelectric curtain offers various height and width protection area specifications for selection, with detection heights ranging from 80mm to 3500mm and a maximum detection distance of up to 10m. It features a short response time, utilizes RS485 synchronous scanning technology for enhanced interference suppression, and has an auto-diagnostic function with fault alarms and self-judgment of fault types. The product boasts a high IP protection rating, high measurement accuracy, and can operate normally under harsh working conditions. It also includes a digital display function for on-site debugging convenience. It has common RS485 communication interfaces and dual switch quantity output methods, providing multiple solutions for accurate measurement. High-precision online measurement detection curtains are applied in production lines, assembly lines, logistics lines, packaging lines, etc., for detecting and measuring the dimensions and lengths, widths, and heights of objects, while also providing simple and user-friendly report recording and query functions. That concludes the introduction to the working principle of the photoelectric curtain. If you have any further questions, please feel free to consult our website, where professionals will be available to explain.