| 摘要 |
2030544 9012186 PCTABS00002 A computer assisted transit car door operating system for augmented automation of transit car door panel (72, 74) operation while providing safety provisions to restrain rail movement unless all passage doorways are closed. A programmable logic controller (180) generates a sequence initiating (opening or closing) signal for a door panel (72, 74), or a manual input signal can be introduced for such prupose. The controller (180) receives signals from a panel position sensor (84, 85) and a panel movement sensor (88, 90) to evaluate door panel status and generate status indication and panel movement signals. Automated control of door panel movement is selectively directed to a doorway, or doorways, at which an opening or closing problem is being encountered; that is, the exclusion of door panel movement signals to properly operated door panels (72, 74). An electrical cam device utilizes a radiant energy emitter (604) and detector (606) with a reversible-direction, coded attenuator (600), keyed to a reversible-direction DC driving motor (76, 78) for a door panel (72, 74); modulating output of such radiant energy detector (606) indicates direction of movement and other data by coordination with the controller (180). An electrically controlled power switch (294) controls connection of a source of DC power to control direction of rotation of the reversible-rotation DC driving motor (76, 78) controlling opening and closing of a door panel (72, 74). |
