Securing an area which can only be accessed through one secure access sluice

摘要

The device has worker islands (20a-c) provided in a spatial region (10) in which persons (14a-e) are not at risk. Worker island-monitoring devices (22a, 22b) determine presence and number of persons on the worker island. A switch-off output outputs a switch-off signal at hazard sources (16a-c) when the persons are not in the spatial region on the hazard sources. The monitoring devices include optoelectronic sensor units (24a, 24b). The sensor unit includes a laser scanner e.g. three-dimensional laser scanner and distance-measuring two-dimensional laser scanner. An independent claim is also included for a method for securing persons in a spatial region.