Moving block signaling headway calculation system

A moving block signaling headway calculation system that calculates a headway value in a running section of a train whose operation is controlled irrespective of blockage, the system comprising:

• an acquisition processor that acquires calculation distance interval data, refinement granularity data and headway value variation amount threshold value data, the calculation distance interval data representing a reference value of an interval between points at which a headway value is to be calculated, the refinement granularity data representing a limit value with which the interval is allowed to be subdivided, the headway value variation amount threshold value data representing a threshold value of an amount of variation in headway value between adjacent two points;
• and
• a headway value calculator that obtains a headway value distribution curve in the running section,
• wherein the headway value calculator is configured to:
• set the reference value represented by the calculation distance interval data to the interval as an initial value;
• and
• recursively execute a process until the interval reaches a limit value indicated by the refinement granularity data, the process including calculating headway values for a plurality of points on the running section for each interval;
• extracting a section between adjacent two points, in which an amount of variation in the headway values between the adjacent two points exceeds the threshold value represented by the headway value variation amount threshold value data, a section between two points before and after a front point and an end point of a point or a section where a headway value changes from rise to fall, or a section between two points before and after a front point and an end point of a point or a section where a headway value changes from fall to rise;
• and subdividing the interval in the extracted sections to calculate the headway value.