@wzy13548899391: # The platform screen door is a full-height or half-height physical barrier set at the edge of the rail transit platform. Its core function is to ensure safety, improve the environment and operational efficiency. Its main advantages include - Safety protection: Prevent passengers from accidentally falling or deliberately jumping onto the tracks, reduce the risk of people or objects being caught (in conjunction with the obstacle detection system), and block unauthorized personnel from entering the track area. - Energy conservation and consumption reduction: Isolating the platform from the tunnel reduces the loss of air conditioning cold/heat (underground stations can reduce energy consumption by about 20% to 35%), and weakens the impact of train piston air on the temperature and humidity of the platform. - Environmental improvement: Significantly reduce the noise of trains entering the station (by approximately 10 to 20 decibels) and dust air flow, enhancing the comfort of waiting for the train. - Operational efficiency enhancement: Supports single-driver operation, facilitates unmanned driving, and reduces station staff intervention; The intelligent type can automatically identify vehicle models, precisely align, shorten parking time and enhance the capacity for receiving and dispatching vehicles. - Emergency isolation: In case of fire or accident, it delays the spread of fire, thick smoke or wind pressure, buying time for evacuation (fully enclosed isolation is more effective). The semi-height type (often referred to as "safety door") mainly focuses on the balance between safety and ventilation, and is suitable for elevated/ground stations. Realize millimeter-level alignment of car doors and platform doors and automatic anti-squeezing [Strong]

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