Activation Method and Activation Circuit for Singapore MRT Thomson Line FAO Trains

Abstract

Objective During the commissioning and operation process of activation circuit for FAO (fully automatic operation) trains, there are situations where the train cannot be activated, thereby affecting the operational order of the trains. Hence, it is necessary to analyze and experimentally verify the activation methods and activation circuits for trains in various scenarios, and select appropriate improvement solutions to address the unactivated train issues. Method Problems of using the driver′s cabin key signal as control condition for train activation are discussed, and the impact of single-point fault in control circuits on train activation function is analyzed and solutions for different scenarios are proposed. Result & Conclusion To address the issue of using the driver′s cabin key signal as the control condition for train activation, a mechanical interlock is established between the driver′s cabin key and the driver controller. According to the position of driver controller handle, FAO and manual operation modes are designed to control the interlocking relationship for train activation, thus resolving conflicts in train activation. To address the unactivated train problems due to single-point fault in control circuits, the activation control circuit adopts a dual-redundant design to ensure that even one circuit fails, the other circuit can still function normally, thereby enhancing the safety and reliability of the train control circuit. Through functional testing, the effectiveness of the activation methods and activation circuits for both FAO and manual operation modes is verified.

Keywords

• metro
• fao
• train activation method
• activation circuit