Automatic train operation system and brake control device

Patent metadata

Field	Value
Publication number	US-2017305396-A1
Application number	US-201515507873-A
Country	US
Kind code	A1
Filing date	Aug 24, 2015
Priority date	Sep 5, 2014
Publication date	Oct 26, 2017
Grant date	—

Abstract

There is provided an automatic train operation system which can stop a train precisely at a stop target position without worsening ride quality even with the control system being a discrete system. The automatic train operation system comprises a relative distance measuring device to acquire information about a relative distance of the train relative to a stop position of a station to output average distance information that is the average of relative distances and a brake control device. The brake control device includes a sensor information holding unit to hold speed information and position information detected by sensors to output; a correction amount computing unit to compute a specifying value correction amount to output; and an instruction planning unit to compute a deceleration specifying value based on the specifying value correction amount and sensor information.

First claim

1 . An automatic train operation system comprising:
a relative distance measuring device to acquire information about a relative distance between a train and a stop target position at the time when the train is stopped to output average distance information that is an average of the information about the relative distances obtained by the stops of the train in a plurality of times of operations; and a brake control device, wherein the brake control device includes: a sensor information holding unit to hold and output speed information and position information detected by sensors; a correction amount computing unit to automatically compute a specifying value for correcting a deceleration from the speed information, the position information, and the average distance information output the specifying value, the specifying value being used after next time of stopping the train; and an instruction planning unit to generate a brake specifying value based on the speed information, the position information, and the specifying value for correcting the deceleration, so as to output the brake specifying value to the brake device.

2 . (canceled)

3 . An automatic train operation system for a train comprising:
a relative distance measuring device to acquire information about a relative distance between a train and a stop target position at the time when the tram is stopped to output stop distance information; and a brake control device to output a brake specifying value to a brake device, wherein the brake control device includes: a route information storage unit to output route information stored therein; an average distance estimating unit to estimate a population mean of the stop distance information from a plurality of stop distance information that are acquired at a plurality of times of the stops of the train and are outputted by the relative distance measuring device, so as to output average distance information; a sensor information holding unit to hold speed information and position information detected by sensors to output; a sensor information correcting unit to estimate and output the current speed and current position of the train from the speed information and the position information and to output corrected sensor information that is information about position and speed in the future, estimated taking into account a response delay front issuing a specifying value to responding; a correction amount computing unit to automatically compute a specifying value for correcting a deceleration from the route information, the average distance information, the current speed, and the current position to output the specifying value correction amount, the specifying value being used after next time of stopping the train; a brake characteristic estimating unit to estimate brake characteristics from the current speed and the current position to output the brake characteristics; a brake instruction planning unit to hold the brake characteristics and to output target deceleration corresponding to a notch specifying value based on a deceleration model for each notch; a brake instruction generating unit to generate a brake specifying value from the corrected sensor information, the target deceleration, and the specifying value for correcting the deceleration, so as to output the brake specifying value; and a history storage unit to store history information of the brake specifying values, the route information, and the corrected sensor information.

4 . The automatic train operation system according to claim 3 , comprising:
a disturbance resistance modeling unit to elaborate a model for deceleration attributed to train resistance using the brake specifying values, the speed information, and the position information held in chronological order in the history storage unit.

5 . The automatic train operation system according to claim 3 , wherein the relative distance measuring device is placed in a station on the ground side, and the average distance information outputted by the relative distance measuring device is transmitted to the correction amount computing unit by radio.

6 . The automatic train operation system according to claim 3 , wherein the train is provided with a non-contact measuring device,
wherein the system is provided with a speed estimating unit to which the speed information and non-contact speed information from the non-contact measuring device are inputted, and wherein the average distance estimating unit estimates a population mean of the stop distance information from a plurality of stop distance information that are outputted by the speed estimating unit to output the average distance information.

7 . The automatic train operation system according to claim 3 , wherein the relative distance measuring device:
acquires information about the position of the train relative to the stop position of a station; acquires at least one of the speed and acceleration of the train relative to the stop target position; computes information about a relative distance between the stop target position and the train with the position information as a reference to output the average distance information.

8 . The automatic train operation system according to claim 1 , wherein an instruction planning unit:
computes a deceleration specifying value from the speed information, the position information, and the specifying value for correcting the deceleration; generates a notch specifying value corresponding to the deceleration specifying value; generates a brake specifying value from target deceleration corresponding to the notch specifying value based on the notch specifying value or deceleration model for each notch.

9 . A brake control device used for an automatic train operation system including a relative distance measuring device to acquire information about a relative distance between a train and a stop target position at the time when the train is stopped to output average distance information that is an average of the information about the relative distances obtained by the stops of the train in a plurality of times of operations,
the brake control device comprising: a sensor information holding unit to hold and output speed information and position information detected by sensors; a correction amount computing unit to automatically compute a specifying value for correcting a deceleration from the speed information, the position information, and the average distance information output the specifying value, the specifying value being used after next time of stopping the train; and an instruction planning unit to generate a brake specifying value based on the speed information, the position information, and the specifying value for correcting the deceleration, so as to output the brake specifying value to the brake device.

Assignees

• Mitsubishi Electric Corp

Inventors

• Shiratsuchi Koji

Classifications

• B60T8/58

  responsive to speed and another condition or to plural speed conditions · CPC title

• B60T8/3235

  Systems specially adapted for rail vehicles · CPC title

• B61L23/14

  automatically operated · CPC title

• B60T8/172

  Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters {(B60T8/17551 takes precedence)} · CPC title

• B60T7/12

  for automatic initiation; for initiation not subject to will of driver or passenger {(limiting speed of vehicles other than rail vehicles B60K31/00)} · CPC title