The automatic doors in our daily lives is becoming increasingly frequent, covering shopping centers, large supermarkets, airports, hotels, hospitals, and countless others, providing convenient services for people. The market prospects for automatic door applications are broad, and how to ensure the safety of automatic doors has become an important issue that needs to be addressed. Automatic doors are equipped with sensors with different functions to provide precise opening and safety protection services for pedestrians. In our daily life, the most common automatic doors include automatic swing doors, automatic sliding doors, automatic revolving door, etc. Let's see how these door sensor products work to achieve the safety protection function. 

Active infrared background suppression sensors are mainly used on swing doors, which require a small and unobstructed blind area above the floor to detect static objects without being affected by background reflectance. Therefore, it is mainly used in situations where the background may change, such as sensors fixed on moving door panels.

Active sensors can ensure the safety of pedestrians within the range of movement, but the door leaf area in the sensing area is a blind spot and cannot be detected by active sensors. When pedestrians or objects stay in this area, they cannot be recognized and protected. Therefore, it is recommended to install safety light beam or photo sensor when installing automatic sliding doors to avoid pinching and colliding with pedestrians during door movement. Therefore, high-quality systems and safety precautions are necessary, which can avoid the occurrence of accidents.

The automatic and safety function of the automatic revolving door are basically realized based on various sensors, which leads to the sensor playing an important role in the whole composition of the automatic revolving door. The activate sensor is responsible for the operation signal of the revolving door. When the signal is detected by the revolving door system, it will run at the rated speed; The rotating wing anti-pinch sensor immediately stops the revolving door after receiving the signal, the signal disappears, and the door body returns to normal operation; When the rotary wing of the revolving door enters the position area, and the signal is sensed in this area, the revolving door immediately stops operation and reverses operation. The signal disappears and the revolving door returns to normal operation.