Application of Platform Screen Door Gap Detection Device on Fully Automatic Operation Metro Lines

Abstract

Objective On the fully automatic operation metro lines, there exists a gap between the platform screen door and the train, leading to the risk of clamping people and objects. In order to ensure train operation safety, a gap detection device must be installed. Method The current situation of the gap detection device application is briefly described, the working state of the laser gap detection device is mainly discussed, two interlocking modes of the laser gap detection device and the train operation are compared in order to access the safety loop of the train, and put forward some suggestions on the application of the anti-clamping safety device on the fully automatic operation metro lines. Result & Conclusion The signal system directly controls the start and shutdown of the gap detection device, and obtains the gap detecting state of the device. The laser gap detection device starts to work only after both the train door and the platform screen door are closed and locked, avoiding the extreme situation in which the platform screen door is closed but the train door still open. This mode provides a more favorable working environment for the gap detection device. When the device detects an obstacle or a false alarm, the signal system can automatically control the train door and the platform screen door to reopen and close, and restart the detection after the doors close, reducing impact on the metro operation. In addition, in fully automatic operation metro system, both the traditional clamping-proof device and the laser gap detection device are considered to be installed to prevent people from being clamped by the platform screen doors.

Keywords

• metro
• platform screen door
• gap detection device