US 10,377,398 B2Granted

Train wireless system and train length calculation method

AssigneeMitsubishi Electric Corporation

InventorsShingo Hamada, Masahiro Chikamori, Takashi Miyauchi

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Abstract

A train wireless system includes a train detecting apparatus on the ground and a controller on a train. The detecting apparatus includes a detector and a calculator. The detector detects that the train is on rails in a block. The calculator measures an on-rail time during which the detector detects the train in the block, and calculates an on-rail detecting time during which the train has been on the rails in the block. The controller includes a distance measurer, a time measurer, a recorder, and a train-length calculator. The distance measurer measures a travelling distance of the train from a beginning of the block, the time measurer measures an elapsed time since the distance measurer starts the measurement, the recorder records the elapsed time and the travelling distance, and the train-length calculator searches the recorder based on the detecting time, and calculates the train length using a selected travelling distance.

Claims14

Dependent claims

A train wireless system comprising:

a train detecting apparatus installed on a ground;
and
an on-board control apparatus mounted on a train, wherein:
the train detecting apparatus includes at least one processor that:
detects that the train is on rails in a block that is a section of the rails having a track circuit;
and
controls measurement of an on-rail time during which the train is detected in the block, and calculation and transmission, to the train, of an on-rail detecting time during which the train has been on the rails in the block, and
the on-board control apparatus includes at least another processor that:
measures a travelling distance of the train from a beginning end of the block, wherein the travelling distance is measured when, after a position-determination track antenna beacon is detected by a pickup coil, the train travels a distance obtained by subtracting a distance from the pickup coil to an axle of the train from a distance from the position-determination track antenna beacon to the beginning end of the block, the axle short-circuiting the track circuit first in the train;
measures an elapsed time since the measurement of the traveling distance is started;
records the elapsed time and the traveling distance in a memory in association with each other;
and
searches recorded elapsed times on a basis of the on-rail detecting time acquired from the train detecting apparatus, and calculates a train length using an accordingly selected travelling distance.

10 more elements

A train-length calculation method in a train wireless system comprising a train detecting apparatus installed on a ground and an on-board control apparatus mounted on a train, the method comprising:

measuring, via at least an input unit and at least one processor of the on-board control apparatus, a travelling distance of the train from a beginning end of a block that is a section of the rails having a track circuit, and measuring an elapsed time since the measurement of the traveling distance is started, wherein measuring the travelling distance and the elapsed time comprises measuring the travelling distance and the elapsed time when, after a position-determination track antenna beacon is detected by a pickup coil, the train travels a distance obtained by subtracting a distance from the pickup coil to an axle of the train from a distance from the position-determination track antenna beacon to the beginning end of the block, the axle short-circuiting the track circuit first in the train;
recording the elapsed time and the travel distance in a memory in association with each other;
measuring, via the at least one processor of the on-board control apparatus, an on-rail time during which the train is on rails in the block, and calculating an on-rail detecting time during which the train has been on the rails in the block;
and
searching, via the at least one processor of the on-board control apparatus, the memory on a basis of the on-rail detecting time, and calculating a train length using an accordingly selected travelling distance.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/540,081Filed 16 Jan 2015
Published: US 2017/0349191 A17 Dec 2017
Granted: 13 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

B61L 1/14
Devices along the route controlled by interaction with the vehicle or train: devices for indicating the passing of the end of the vehicle or train
B60L 15/40
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: adaptation of control equipment on…
B61L 1/16
Devices along the route controlled by interaction with the vehicle or train: devices for counting axles; Devices for counting vehicles
B61L 3/121
Using magnetic or electrostatic induction; using radio waves: using magnetic induction