Understanding Automatic Door Sensors: Radar, Infrared, and Ultrasonic
Sensors are the most critical components in any automatic door system. They determine when the door opens, stays open, or closes, and they play a major role in preventing accidents. Radar sensors detect motion using microwave signals. They are highly responsive and ideal for busy entrances such as shopping malls and airports. However, they may react to unwanted movement if not properly adjusted. Infrared sensors detect presence rather than motion. These sensors are commonly used as safety devices to keep [...]
How Automatic Doors Work: From Sensors to Control Systems
Automatic doors operate through a coordinated system of electronic, mechanical, and sensor-based components designed to provide safe, efficient, and hands-free access. Understanding how these systems work helps building owners and facility managers maintain reliability and prevent unexpected failures. At the core of every automatic door is the sensor system. Motion sensors, typically radar or infrared, detect approaching pedestrians. Once movement is detected, the sensor sends a signal to the control unit, which acts as the system’s brain. The controller evaluates [...]