ELEVATOR CAR TOP INTRUSION DEVICE

摘要

There is provided a detection system for detecting attempted entry onto the shaft-side roof of an elevator cab which includes power supply means for supplying power to the system, proximity detection means in electrical connection with the power supply means which is disposed proximate the roof of the cab for detecting an object entering a zone of detection including the top of the cab, the detection means in a preferred embodiment including an optical source for generating a detection beam and a corresponding optical receiver for receiving the detection beam when it is diffused by an object entering the detection zone and for providing a detection signal when the object enters the detection zone, and detection indication means responsive to the detection signal for indicating an attempted entry.