Proposal of Method to Make Architecture-based Relief Operation Scenario for Unmanned Light Rail Transit

초록

The unmanned Light Rail Transit (LRT) is required to have more complex relief procedures than LRT with driver because of unmanned operation. Therefore, LRT operator practices, on a regular basis, relief operation based on standard operation procedure (SOP) for emergency. However, as the existing scenario of SOP is written in text, it’s difficult to understand and check the logicality of the scenario in advance as well. In this paper, we propose a method to draw up architecture based relief operation scenario for unmanned LRT using systems engineering (SE) tool. The method we propose uses the concepts and techniques from International Standard for Systems Engineering. To develop a scenario for relief operation, we set up the concept of relief operation and draw the enhanced functional flow diagram (EFFBD) for the functional interactions, and then simulate the scenario by SE tool to validate the logicality. Based on function, we draw the physical architecture, and functions are allocated to physical diagram. Physical diagram shows items that have the functions. Using the above results, we finally make an integrated architecture for relief operation. The relief operation scenario can be modified easily depending on environmental conditions and printed out to flow diagram, generic table and traceability diagram, etc. The method that we propose can also be applied to other SOPs.