Method for operating gate i.e. rolling gate in building, involves releasing signals during interruption of light lines of danger area and protection area, respectively, and releasing different action by gate controller based on signals

摘要

#CMT# #/CMT# The method involves dividing light lines (17) of a light grid into three areas e.g. inactive area (13), danger area (14) and object protection area (15). A signal is released during interruption of the light line of the danger area, and another signal is released during interruption of the light line of the protection area. A different action is released by a gate controller (7) based on the signals. Size of the danger area is varied based on position of a closing edge of a gate (1), where the position of the edge is determined based on position data of a position generator (4). #CMT# : #/CMT# An independent claim is also included for a device for operating a gate. #CMT#USE : #/CMT# Method for operating a gate i.e. rolling gate, in a building and land. Can also be used for a sectional door and up-and-over door. #CMT#ADVANTAGE : #/CMT# The different action is released by the gate controller based on the signals of the interruptions of the light lines, thus controlling a gate drive corresponding to the danger, and hence reducing wear and noise pollution of the gate. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a gate with a gate controlling system and components of a light grid. 1 : Gate 4 : Position generator 7 : Gate controller 13 : Inactive area 14 : Danger area 15 : Object protection area 17 : Light lines.