Research on Train Door Control in Fully Automatic Operation System

In fully automatic operation systems widely implemented in the urban rail transit sector, train doors play an important role of passenger service. Their control logic and mode directly affect both the personal safety of passengers and the operational efficiency of these transport systems. This paper introduces train door control schemes for fully automatic operation systems in normal, fault and emergency scenarios. An in-depth analysis focuses on the logic and timing of door unlocking in emergencies. Two timing options are discussed for establishing evacuation protection zones for the operation of the emergency door unlocking at zero speed, the first involves unlocking the doors after the operation control center receives a request for emergency door unlocking and confirming the authorization; the second involves unlocking the doors upon receiving a request for emergency door unlocking from passengers. The comparison results showed that both options were effective in unlock the doors within a specified time-frame. Although the first option took more time for emergency door unlocking (up to 18.5 s), it played an effective role in avoiding impacts to the operational order by passenger misoperations during high-density train operation.