Active infrared detection works by emitting an infrared beam and detecting its reflection or interruption. When a person or object is detected, a signal is sent to the control system, which then triggers an action, such as opening or closing an automatic door.
Reflection Method
The infrared beam is directed towards a specific area. When a person or object enters this zone, the beam reflects back to the receiver, indicating presence.
Interruptive Method
The emitter and receiver are positioned opposite each other, forming a continuous beam. The receiver detects when the beam is broken by a person or object.
Reliability
Infrared light is less affected by changes in ambient light conditions, making it a reliable choice for detection both indoors and outdoors.
Simplicity
The technology is straightforward to implement.
Non-contact
Detection occurs without any physical contact, enhancing safety and hygiene.