How far into the hallway does the 3D detection zone project?
The 3D detection zone extends roughly 70% of the separation between the detectors into the landing measured from the plane of the car doors. The detection performance relies on a number of factors including the size and reflective properties of the target. The 3D works by transmitting infrared light into the hallway and monitoring the infrared reflections reflected back from the target. The greater the reflective properties of the target the further from the landing doors the 3D effectively detects. For a typical elevator with a 42″ opening, the 3D detection zone would project approximately 28″ from the elevator car doors into the landing area. The 3D detection zone is projected past the running clearance and the landing doors, which would typically span 8″, leaving approximately 20″ of 3D detection past the landing doors. If a door buck surrounds the elevator landing doors it would typically be 18″ deep, which would result in little or no 3D detection of people walking past the elevat
