Door controls, safety devices, automatic door operating system, and the same car and the elevator doors with operating system

摘要

A door control apparatus for vehicles includes at least one sensor (60, 62, 64) viewing at least one region (22) in the vicinity of a door (18), logic circuitry responsive to said at least one sensor (60, 62, 64) for providing at least one region-clear output signal, and automatic door opening and closing apparatus (24) responsive at least to the absence of said at least one region-clear output signal to cause opening of said door (18) and responsive at least to the presence of said at least one region-clear signal to cause closing of said door (18).