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A method and system for adjusting driving curve combining offline and online

A curve and offline technology, applied in the field of offline and online adjustment of driving curves, can solve the problems of train operation quality degradation, inappropriate judgment, inappropriate driving and manipulation behavior, etc., and achieve the effect of saving online resources

Active Publication Date: 2018-02-06
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for train control, it is far from enough to know whether the front section can be entered. The train driver's insufficient grasp of the real-time information and status of the train operation can easily lead to inappropriate judgments on train operating conditions and inappropriate driving. Manipulative behavior, which in turn leads to a decline in the overall quality of train operation
The Driver Advisory System (DAS: Driver Advisory System) came into being under such a background. In the commonly used train driver assistance systems, the commonly used driving curve adjustment methods are usually based on real-time acquisition and real-time online calculation and adjustment. Real-time online resources are wasted in the application

Method used

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  • A method and system for adjusting driving curve combining offline and online
  • A method and system for adjusting driving curve combining offline and online
  • A method and system for adjusting driving curve combining offline and online

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Experimental program
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Effect test

Embodiment 1

[0063] In this embodiment, the calculation model of the train driving curve needs to be established in advance, including:

[0064] Establish the motion expression in the process of train operation; among them, establish the mass equation according to the mass of the locomotive, the mass of the carriage and the mass of passengers, establish the resistance equation of the train according to the Davis equation and the speed of the train, and establish the gravity of the train on the train line in combination with the position of the train The component force equation of the direction; according to the force of the train in the direction of the line, an acceleration equation is established;

[0065] The basic operations based on speed and distance are discretely processed to obtain the iterative relational expression of train energy consumption;

[0066] An energy-saving target function is established based on the motion expression and an iterative expression of train energy cons...

Embodiment 2

[0092] In this embodiment, it is still necessary to establish the calculation model of the train driving curve in advance, and its specific establishment process is the same as in Embodiment 1, so it will not be repeated here;

[0093] This embodiment provides a processing flow of a method for combining offline and online adjustment of driving curves as follows: image 3 As shown, the following processing steps are included:

[0094] Step 21, dividing the interval between the adjustment start point and the train end point according to the distance, so that the speed limit and slope of the train in each interval remain the same; wherein, the train adjustment start point is determined according to the train online operation data and the initial driving curve before adjustment; The latest updated driving curve is used as the initial driving curve before adjustment described in this embodiment. Specifically, in this embodiment, the section is divided according to the slope and th...

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Abstract

Embodiments of the present invention provide a method and system for adjusting driving curves both offline and online. Carry out interval division according to the distance between the adjustment starting point and the train end point, so that the speed limit and slope of the train in each interval remain the same; wherein, the train adjustment starting point is determined according to the train online operation data and the initial driving curve before adjustment; in the Select an adjustment interval in the interval; adjust and update the traction distance of the adjustment interval by using the preset adjustment amount of traction distance; based on the last driving curve, obtain the adjusted driving distance according to the current traction distance of the adjustment interval curve. In this embodiment, the current running state information of the train will be collected online at a certain time interval during the running of the train, and then the adjusted driving curve will be obtained after offline processing by the method provided in this embodiment, so as to meet the requirements of safety, punctuality and energy saving during the running of the train The following provides a more accurate driving curve for the driver's reference, saving online resources.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for adjusting driving curves combining offline and online. Background technique [0002] As a transportation method with high transportation efficiency and low unit transportation cost, the railway transportation system carries the important task of transporting a large number of passengers and goods, and is the main artery of national economic development. The operation system of the railway passenger transport system mainly includes three levels: the operation plan and timetable, the reference operation curve between stations, and the train operation method. Each level cooperates and restricts each other to form the operation behavior of the train. my country has a vast territory. During the long-distance operation of main-line passenger trains, the line conditions, surrounding environment and train characteristics may change. When planning the opera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L27/00
CPCB61L27/10
Inventor 董海荣朱海楠高士根孙绪彬
Owner BEIJING JIAOTONG UNIV