# US 2019/0168790 A1 · Moving block signaling headway calculation system

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- Number: US 2019/0168790 A1
- Document ID: US20190168790A1
- Status: Published application
- Kind: A1
- Application number: 16/267,452
- Filed: 2019-02-05
- Published: 2019-06-06
- Earliest claimed: 2017-04-17
- Assignees: Kabushiki Kaisha Toshiba; Toshiba Digital Solutions Corporation
- Applicants: Kabushiki Kaisha Toshiba; Toshiba Digital Solutions Corporation
- Inventors: Hideki KUBO
- Web page: https://patentgrep.com/patent/US20190168790A1

## CPC

- B61L 27/16: Trackside optimisation of vehicle or train operation
- B61L 21/10: Arrangements for trains which are closely following one another
- B61L 27/20: Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
- B61L 27/40: Handling position reports or trackside vehicle data
- B61L 27/70: Details of trackside communication
- B61L 2027/204: {using Communication-based Train Control [CBTC]}
- B61L: GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC (brakes or auxiliary equipment B61H, B61K; point or crossing construction E01B)

## Abstract

According to one embodiment, a moving block signaling headway calculation system recursively executes a process until an interval reaches a limit value. The process includes 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 a threshold value, 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The moving block signaling headway calculation system of claim 1, further comprising an input processor that inputs a calculation condition of headway value by presenting a screen to set the calculation condition, the calculation condition including the calculation distance interval data, the refinement granularity data and the headway value variation amount threshold value data.

### Claim 3 (depends on 1)

The moving block signaling headway calculation system of claim 1, further comprising an output processor that presents a screen on which a headway value distribution curve of the running section is place, the headway value distribution curve being obtained from the headway values calculated by the headway value calculator and being placed on the screen while a first axis represents a distance and a second axis represents orthogonal to the first axis represents time.

### Claim 4 (depends on 3)

The moving block signaling headway calculation system of claim 3, wherein the output processor places a list of headway values on the screen together with the headway value distribution curve, the headway values may be calculated at different intervals within the running section by the headway value calculator.

### Claim 5 (depends on 4)

The moving block signaling headway calculation system of claim 4, wherein the output processor places a train performance curve of the running section on the screen together with the headway value distribution curve and the list of headway values, the train performance curve being placed on the screen while the first axis represents a distance and the second axis represents a speed.