With the development of city railway traffic, PSD (Platform Screen Door) system has been widely applied.

But the mechanism is not always effective, it brings some new problems such as masked nodes into the Wireless network on some condition.

The Realizing Method is introduced based on platform screen door of track communication.

This paper mainly discusses the key problems about the platform screen doors earthing,from the angles of principle and safety,argues that the scree door system shall be installed in the structure of a station with insulation and junction protection.

Proposed here is a mechanism scheme of the platform screen doors (PSD) for subways.

Effect of screen doors on fire smoke in underground railway;

This paper studies the wind pressure on metro screen door by using the wind tunnel dynamic pressure testing technology,and introduces the testing method and some important results,including the amount of wind pressure and the pressure patterns.

The article introduces and compares the characteristics of opening-closing air conditioning system and screen door system.

Simulates the smoke propagation under natural and mechanical smoke extraction modes in the worst situation of fire happening in the middle part of the underground railway with shield door.

The essay introduced the control of brushless DC motor base on TMS320F2812 and the application in railway shield door.

Analysis of the shielding effectiveness of the metallic spring in the shielding door;

In this paper the theory of designing the shielding door is explained, then the factor influence the shielding electromagneticwave efficiency is analysed.