| 摘要 |
PURPOSE: An apparatus for a warning entrance of a tunnel is provided to control an effect that a curtain is ascended and descended abnormally by using a proximity sensor. CONSTITUTION: In an apparatus for a warning entrance of a tunnel, a cylindrical body is installed on a horizontal part of a support stand(3) installed in a tunnel entrance. A curtain on which warning is displayed is wound around by a driving shaft, and a drive motor unit(200) includes an inverter and is connected to the one end of the driving shaft. A proximity sensor unit(300) is connected to the other end of the driving shaft and senses the state of the driving shaft it, and a controller indicates the kinematic state of the drive motor unit according to the state of the proximity sensor unit. A roll curtain on which the warning is displayed is descended and ascended by forward/backward rotation of the driving motor. |
