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Platform Screen Door（PSD）

Platform Screen Door (PSD) it is a system designed to improve platform safety and environmental comfort requirements. The platform door is sturdy and durable, and can be set to the same length according to the actual length of the platform and train composition. Its function can meet the operational requirements of the busiest subway system. The platform door separates the platform from the train operation area, and is controlled by the control system to automatically open, thereby protecting passengers from accidentally falling into the track while waiting for the train. Platform doors can block the noise and strong winds caused by trains entering and exiting the station, and improve the efficiency of air conditioning, heating, and ventilation systems, thereby saving energy at the station.

Characteristics of Platform Screen Door

Safety: Effectively separating the platform waiting area from the train operation area can prevent passengers from falling or jumping off the track and causing danger, allowing passengers to ride the subway safely and comfortably. Comfort: Expanding the waiting area on the platform can effectively reduce the impact of noise and tunnel wind on passengers, greatly improving comfort.
Energy Saving: PSD reduces the exchange of hot and cold airflow between the platform area and the track area, prevents the loss of platform air conditioning and maintains platform temperature, reduces the operational energy consumption of the environmental control system, and thus saves operating costs.
Aesthetic: The appearance is made of high-quality stainless steel or aluminum, with a high transparency glass screen and a hidden frame structure design, which beautifies the platform environment.

Platform Screen Door Classification

Platform Screen Door can be divided into half height open safety doors and full height closed platform doors in terms of closure form. The former is called a "safety door", which only serves the purpose of safety and aesthetics, and is suitable for platforms without installed air conditioning systems. Generally, it is a ground platform or an elevated platform. The latter is known as "platform doors" and is suitable for installing air conditioning systems on platforms, usually underground platforms.

Semi-height safety door

The main function of a half height safety door is to ensure the safety of passengers, with a height of generally 1200-1500mm. Due to its inability to completely isolate the impact of wind and noise on passengers, this structure is often used on ground platforms or elevated platforms.

Full height screen door

The height of the full height platform door is generally 2800-320mm. It has the function of isolating the cold and hot airflow exchange between the air flow inside the tunnel and the air conditioning environment inside the station, reducing the heat exchange between the station and the section to the minimum extent and achieving the goal of energy conservation.

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