Modern automatic door systems depend on advanced sensor technology to deliver safe, reliable, and hands-free access. The two most important sensor types used today are radar sensors and infrared sensors, each playing a distinct role in automatic door operation.
Radar sensors, also known as microwave motion sensors, detect approaching movement by sending out microwave signals and analyzing their reflection. When motion is detected, the sensor signals the automatic door control unit to open the door. These sensors are ideal for high-traffic commercial entrances such as shopping centers, airports, and office buildings because they offer fast response and wide detection coverage, even in poor lighting conditions.
Infrared sensors are primarily used for safety and presence detection. They monitor the doorway area to ensure no person or object is in the opening before allowing the automatic door to close. This makes infrared safety sensors essential for hospitals, public buildings, and accessibility-focused environments, where user protection is critical.
In modern automatic sliding doors, radar and infrared sensors work together as a dual detection system. Radar sensors activate door movement, while infrared sensors continuously protect users by preventing unsafe closing. This combination improves safety, reduces false activations, and ensures smooth, efficient door operation.
By integrating radar and infrared sensor technology, automatic doors deliver dependable performance, enhanced safety, and improved energy efficiency for today’s commercial and public spaces.
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