Interpretation of the principle and function of light screen sensor

The light curtain sensor is a protection device used for safety. It uses infrared principles to control some dangerous mechanical equipment. When the light curtain is blocked, the sensor will generate a signal, so that the equipment stops working, so that safety can be avoided. The accident happened.

The principle of the light curtain sensor: When there is no object intrusion in the protected area, the receiver is in the light receiving state. At this time, the receiving communication light should not be on. When the transmitting light is on, the machine can operate normally by pressing the working switch of the machine to be protected. When an object invades the protected area, the received indicator light is on. At this time, the protected mechanical control is at a standstill. When any object invaded out of the protected area, the light curtain sensor returns to the normal state. Light curtain sensors are mainly used in the safety protection of automated industrial production, usually also called safety light curtains, safety gratings, grating sensors, safety protectors and so on. Multi-beams of infrared rays form a barrier and will suspend work when touched to protect the safety of the operator’s life. With the technical support of infrared scanning, the receiving and transmitting are installed on both sides to form a single-chip microcomputer for program control. The infrared receiving device forms a line under scanning conditions. Warning barrier When any object or person enters the barrier area, the system outputs a signal. When any object or person leaves, the signal is closed normally to achieve the purpose of protecting safety. To learn more about the use of light curtain sensors, continue to pay attention or contact this website.