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Locomotive positioning method and system

A positioning method and positioning system technology, which is applied in satellite radio beacon positioning system, radio wave measurement system, railway signal and safety, etc., can solve the problem of inability to obtain LKJ position data, lack of real-time monitoring of trains, and poor timeliness of train operation information And other issues

Active Publication Date: 2015-11-18
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned train positioning methods, the positioning accuracy of the track circuit positioning method depends on the length of the track circuit, which is not accurate. In order to achieve a more accurate positioning, other methods are needed to supplement; When the LKJ is in the non-monitoring mode, the LKJ position data cannot be obtained. For example, when the LKJ is in the degraded or shunting mode, the train (locomotive) positioning cannot be performed; the satellite positioning method is in the satellite positioning system, the accuracy of the global positioning system GPS or Beidou BD Basically, the positioning accuracy of civilian satellite receiving modules is within 10-20 meters, and it is easily affected by weather factors, electrical electromagnetic interference, and shelters (in buildings, valleys, canyons, tunnels), so it is impossible to achieve full real-time Therefore, each application information system has poor timeliness and is not comprehensive enough to grasp the train operation information, and lacks real-time monitoring of the train (locomotive) operation process, so that it is impossible to issue an accurate dispatch plan, and it is impossible to perform a refined forecast on train operation
At present, there is no precise positioning method in the railway industry that can realize real-time precise positioning during the whole process of train (locomotive) operation.

Method used

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  • Locomotive positioning method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The invention provides a locomotive positioning method, figure 1 A flow chart of Embodiment 1 of the locomotive positioning method of the present invention is shown, including:

[0071] Step S101: Determine the current positioning environment state;

[0072] Determine whether the LKJ of the target locomotive that needs to be positioned is currently under monitoring, and whether the vehicle-mounted GPA / BD positioning device can search for satellite signals for GPS / BD positioning. GPS / BD positioning is a positioning method compatible with GPS positioning and Beidou positioning.

[0073] Step S102: When the LKJ is in the monitoring state and the satellite signal is searched, obtain the LKJ position data and the GPS / BD position data, and use the location matching algorithm to locate the position of the locomotive step by step according to the LKJ position data, and use the GPS / BD The position data corrects the position of the locomotive;

[0074] When the LKJ is in the mo...

Embodiment 2

[0084] image 3 The flow chart of Embodiment 2 of the present invention is shown, and corresponding to Embodiment 1, locating the position of the target locomotive step by step through the positioning matching algorithm according to the position data of the target LKJ specifically includes:

[0085] Step S201: According to the line information and uplink and downlink information in the LKJ position data, locate the locomotive to the corresponding direction on the corresponding line;

[0086] Step S202: According to the determined TMIS station information in the corresponding direction on the corresponding line, locate the locomotive in the area under the jurisdiction of the corresponding TMIS station;

[0087] Step S203: According to the determined key point information in the area under the jurisdiction of the corresponding TMIS station, obtain the last key point that the locomotive has passed and the next key point that has not passed, and locate the locomotive to the corres...

Embodiment 3

[0091] Figure 6 The flow chart of Embodiment 3 of the present invention is shown, corresponding to Embodiment 1, correcting the position of the target locomotive through the target GPS / BD position data specifically includes:

[0092] Step S301: When the position deviation of the locomotive exceeds the preset range, according to the determined collection point information in the corresponding two key point intervals and the current position information of the locomotive in the GPS / BD position data, Calculate respectively the distance between each collection point in the corresponding two key point intervals determined and the locomotive;

[0093]In the LKJ state, a signal can be uniquely determined by the line number, station number, uplink and downlink, and signal number; the formula for calculating the distance between two points: the GPS point coordinates are (MLonA, MLatA), and the collection point coordinates are (MLonA, MLatA) , the distance between two points:

[0094...

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Abstract

The invention discloses a locomotive positioning method and system. The locomotive positioning method comprises the following steps: determining the state of current positioning environment; when an LKJ is in the monitoring state and satellite signal is available, obtaining the position data of the LKJ and the position data of a GPS / BD, wherein the LKJ positioning manner is used as the main manner, and the GPS positioning assists to rectify deflected positions; when the LKJ is in the monitoring state and no satellite signal is available, obtaining the position data of the LKJ, wherein positioning is performed by the LKJ manner; when the LKJ is in the non-monitoring state and satellite signal is available, obtaining the continuous preset number of GPS coordinate data of a locomotive, and the locomotive is positioned according to the GPS coordinate data; and when the LKJ is in the non-monitoring state and no satellite signal is available, positioning the locomotive by adopting a speed-measurement positioning method and a dead reckoning method. An LKJ positioning method and a GPS positioning method are combined, so that the problem that the locomotive cannot be accurately positioned in a whole journey is solved, and the locomotive positioning method is continuous in positioning, and high in positioning precision.

Description

technical field [0001] The invention relates to the field of train positioning control in the railway industry, in particular to a locomotive positioning method and system. Background technique [0002] At present, the application information system and dispatching system put into operation of the railway system have greatly improved the level of train dispatching, and there have been many methods of train positioning, such as the track circuit potential method, the position data positioning method of the train operation monitoring device LKJ, and the satellite positioning method. [0003] However, in the above-mentioned train positioning methods, the positioning accuracy of the track circuit positioning method depends on the length of the track circuit, which is not accurate. In order to achieve a more accurate positioning, other methods are needed to supplement; When the LKJ is in the non-monitoring mode, the LKJ position data cannot be obtained. For example, when the LKJ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L25/02G01S19/50G01S19/48
CPCB61L25/02
Inventor 欧盛芬吴俊亮阳亦斌唐国平叶理辉朱咏嘉曾垂周龙卫华何见坤邓国知
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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