CN111897901A - Train control system track geographic information acquisition and processing method - Google Patents
Train control system track geographic information acquisition and processing method Download PDFInfo
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Abstract
The invention relates to a train control system track geographic information acquisition and processing method, wherein the track geographic information is basic data of train-mounted equipment for satellite positioning and operation, and the method comprises the steps of dividing a line into a plurality of regions according to the jurisdiction range of a station, dividing each station into a plurality of track segments according to straight lines, curves with the same radius and turnout distribution conditions, and determining POI (point of interest) sampling points needing to be measured; and carrying out necessary field measurement by utilizing the corresponding relation of the coordinates of all piles in the line and the corresponding relation of the coordinates of the intersection point of the line, which are established in the process of reconnaissance and design, and completing information acquisition of latitude, longitude, elevation, line mileage and the like of the POI point. And carrying out validity check and adjustment on the collected POI data, and generating a binary file for the train control system through computer software.
Description
Technical Field
The invention belongs to the technical field of track geographic information, and particularly relates to a track geographic information acquisition and processing method for a train control system.
Background
With the vigorous advance of satellite positioning technology, train control systems based on satellite positioning develop theoretical research and application, and orbit geographic information data is the basis of the train control systems. The track geographic information data covers the corresponding relation between the satellite positioning longitude and latitude data and the track position data, the correctness of the data is directly related to the accuracy of train positioning, the error of the track geographic information data can cause the failure of train positioning, and serious people influence the running safety of the train. It is therefore necessary to conduct intensive research on each step of the acquisition and generation of the orbit geographic information data to ensure the integrity and consistency of the map data.
At present, the research on the geographical information data of the track used by the novel train control system in China is still in a starting stage, the research on the geographical information data of the track is less, and specific method guidance is lacked from early design, acquisition and measurement, data processing and generation of the geographical information data of the track.
Disclosure of Invention
The invention provides a train control system track geographic information acquisition and processing method, which solves the problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the train control system track geographic information acquisition and processing method comprises the following steps:
step 1: starting design, a route design unit outputs a route POI list according to the specification, and then determines a specific route track sampling point table according to the POI list;
step 2: data acquisition, wherein a measuring unit measures the center line and POI of each track line by adopting high-precision mapping equipment according to requirements and outputs track geographic information basic data;
and step 3: compiling data, namely compiling the measured track geographic information basic data into a recognizable binary data file according to specifications;
and 4, step 4: the method comprises the steps that data are used, a correct track geographic information binary file is downloaded into train control system ground equipment, the train control system ground equipment and a mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established with the train control system ground equipment through a wireless network, and track geographic information data are sent to vehicle-mounted equipment and used for positioning and running of the train;
and 5: and data archiving, namely archiving and storing the output track geographic information data.
Further, the method also comprises the step 6: and (5) when the data is outdated, destroying the original track geographic information data when the line is changed, repeating the steps 1 to 5, and updating and using the new version data.
Further, step 2: the data acquisition method specifically comprises the following steps:
step 201: dividing stations;
step 220: on the basis of the stations divided in the step 201, dividing the line in the station control range into a plurality of track segments according to straight lines, curves with the same radius and turnout distribution conditions, and setting corresponding track numbers;
step 203: designing a POI list, determining track numbers, relative offsets, key point types and mileage data information of POI points of three types including a station administration boundary, a responder and a turnout on the basis of the step 201 and the step 202, and generating the POI list of the station, wherein the POI list can be used for designing a line track sampling point and generating fixed application data;
step 204: designing a line track information sampling table, and determining sampling points in a station jurisdiction range, wherein the sampling points comprise non-POI points and POI points; the content of the sample needs to include: latitude, longitude, elevation, mileage and the number of the track where the key point is located, and if the key point is the key point, the name of the key point needs to be provided;
step 205: and measuring each data point in the sampling point table determined in step 204 by using a mapping device, and finally outputting a track geographic information basic data table for generating track geographic information data.
Further, step 201: dividing stations, specifically including:
first-stage initial measurement: the method comprises the following steps that a line design unit conducts preliminary measurement on line data according to economic transportation requirements, geological and landform and other data, and determines line trends, positions and station arrangement; and (3) second-stage determination: and according to the initial measurement result, further measuring the line data, synthesizing line conditions, and dividing stations and the jurisdiction range thereof according to the principle.
Further, in step 204, the interval between the sampling points is not more than 3 meters.
Further, in step 205, the measurement of the route track of the non-POI point is to sample on each track center line, the measurement point of the switch and the signal is the track center position corresponding to the POI point, and the measurement point of the transponder is the center position of the transponder;
further, in step 205, the sampling precision requires 0.2 meter.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps of dividing a line into a plurality of areas according to the jurisdiction range of stations, dividing each station into a plurality of track segments according to straight lines, curves with the same radius and turnout distribution conditions, and determining POI (point of interest) sampling points needing to be measured; and carrying out necessary field measurement by utilizing the corresponding relation of the coordinates of all piles in the line and the corresponding relation of the coordinates of the intersection point of the line, which are established in the process of reconnaissance and design, and completing information acquisition of latitude, longitude, elevation, line mileage and the like of the POI point. And carrying out validity check and adjustment on the collected POI data, and generating a binary file for the train control system through computer software. The method ensures the consistency and integrity of the track geographic information data, and has important significance for accurate positioning and safe operation of the train.
Drawings
FIG. 1 is a track geographic information data lifecycle diagram for the method of the present invention.
Fig. 2 is a flow chart of the acquisition of orbit geographic information data of the method of the invention.
FIG. 3 is a flow chart of a method for compiling track geographic information data according to the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following examples, it being understood that the described examples are only a part of the examples of the present invention, and not all examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for acquiring and processing track geographic information data, which constructs a full life cycle from acquisition, processing, use and filing of the track geographic information data to outdated, starts from two stages of data acquisition and processing, provides a specific method for acquiring and measuring the track geographic information data, and processes the acquired data into binary data which can be identified and used by ground equipment of a train control system according to a 'V model' flow method. The method is used for guiding the design and generation of the track geographic information data, ensuring the consistency and integrity of the track geographic information data and having important significance for the accurate positioning and safe operation of the train.
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the train control system track geographic information acquisition and processing method includes the following steps:
step 1, starting design: a line design unit outputs a line POI list (Point of Interest, key Point) according to the specification, and then determines a specific line track sampling Point table according to the POI list;
step 2, data acquisition: measuring the center line and POI of each track line by a measuring unit by adopting high-precision mapping equipment according to requirements, and outputting track geographic information basic data;
step 3, data compilation: compiling the measured track geographic information basic data into a recognizable binary data file according to the specification;
and 4, using data: the correct track geographic information binary file is downloaded into train control system ground equipment, the train control system ground equipment and a mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established with the train control system ground equipment through a wireless network, and track geographic information data are sent to vehicle-mounted equipment and used for positioning and running of the train;
step 5, data archiving: and performing archival storage on the output track geographic information data.
Step 6, data obsolescence: and when the line is changed, destroying the original track geographic information data, repeating the steps 1 to 5, and updating and using the new version data.
Referring to fig. 2, step 2, data acquisition of orbit geographic information: the method comprises the following steps:
step 201: station division, first stage (preliminary survey): the method comprises the following steps that a line design unit conducts preliminary measurement on line data according to economic transportation requirements, geological and landform and other data, and determines line trends, positions and station arrangement; second stage (assay): and according to the initial measurement result, further measuring the line data, synthesizing line conditions, and dividing stations and the jurisdiction range thereof according to the principle.
Step 202: based on the stations divided in the step 201, laying turnouts in the stations according to the traveling organization, the transportation requirement and the geological condition of each station, and determining the station types of the stations; and on the basis, the tracks are divided according to a track division principle, and corresponding track numbers are set.
Step 203: designing a POI list, determining data information such as track numbers, relative offsets, key point types, mileage and the like of POI points of three types including a station administration boundary, a transponder and a turnout on the basis of the steps 201 and 202, and generating the POI list of the station, wherein the POI list can be used for designing line track sampling points and generating fixed application data.
Step 204: designing a line track information sampling table, and determining sampling points in a station jurisdiction range according to the requirement that the spacing between the sampling points is not more than 3 meters, wherein the sampling points comprise non-POI points and POI points; the content of the sample needs to include: latitude, longitude, elevation, mileage, and track number, and if the key point is provided with a key point name, the following table shows the key point name.
Step 205: measuring each data point in the sampling point table determined in step 204 by using high-precision mapping equipment, wherein the measurement of the line track of the non-POI point is to sample on the central line of each track, and the measurement points of the turnout and the signal machine are the central positions of the track corresponding to the POI point and the central position of the transponder at the measurement point of the transponder; the sampling precision is required to be 0.2 m; and finally, outputting a track geographic information basic data table for generating track geographic information data for the train control system.
The compiling process of the track geographic information data refers to a process of generating a binary file for the novel train control system from track geographic information basic data obtained through field acquisition and measurement according to a defined data structure format. The compilation of the track geographic information data is mainly divided into three parts of forward compilation, verification and confirmation of the data, each link of the forward compilation needs to be verified so as to ensure that the output of each link is consistent with the input data, and finally, the data of the whole track needs to be confirmed to confirm whether the train operation positioning requirements can be met. As shown in fig. 3:
(1) forward compiling: as in the left branch of the model of fig. 3, three phases are divided: the track geographic information basic data table-track geographic information engineering data table-track geographic information binary file is a whole line data table designed and measured by a survey design unit, the engineering data table is a plurality of data tables obtained by dividing, sorting and checking basic data according to the administration area of ground equipment of a train control system, and the binary file is a binary data file for storing the engineering data table according to a specified data structure format.
(2) Data verification: verifying each link of forward programming, and carrying out logic validity check on the program data table to ensure the validity of the program data table; analyzing the binary file to obtain analyzed engineering data, and checking the engineering data with the engineering data in the forward compiling process to ensure the consistency of the two; and checking the analysis data and the basic data to ensure that the analysis data covers the track geographic information of the whole line and ensure the integrity of the binary file.
(3) Data confirmation: and configuring the compiled track geographic information binary file into corresponding equipment for on-site joint debugging joint test simulation confirmation to ensure that the running requirement of the train can be met.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. Any partial modification or replacement within the technical scope of the present disclosure by a person skilled in the art should be included in the scope of the present disclosure.
Claims (7)
1. The train control system track geographic information acquisition and processing method is characterized by comprising the following steps:
step 1: starting design, a route design unit outputs a route POI list according to the specification, and then determines a specific route track sampling point table according to the POI list;
step 2: data acquisition, namely measuring the central line and POI of each track line by a measuring unit according to requirements by using the corresponding relation of the coordinates of all piles in the line and the corresponding relation of the coordinates of the intersection point of the line established in the survey design process and outputting track geographic information basic data;
and step 3: compiling data, namely compiling the measured track geographic information basic data into a recognizable binary data file according to specifications;
and 4, step 4: the method comprises the steps that data are used, a correct track geographic information binary file is downloaded into train control system ground equipment, the train control system ground equipment and a mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established with the train control system ground equipment through a wireless network, and track geographic information data are sent to vehicle-mounted equipment and used for positioning and running of the train;
and 5: and data archiving, namely archiving and storing the output track geographic information data.
2. The train control system track geographic information acquisition and processing method according to claim 1, further comprising the step 6: and (5) when the data is outdated, destroying the original track geographic information data when the line is changed, repeating the steps 1 to 5, and updating and using the new version data.
3. The train control system track geographic information acquisition and processing method according to claim 1 or 2, characterized in that the step 2: the data acquisition method specifically comprises the following steps:
step 201: dividing stations;
step 220: on the basis of the stations divided in the step 201, dividing the line in the station control range into a plurality of track segments according to straight lines, curves with the same radius and turnout distribution conditions, and setting corresponding track numbers;
step 203: designing a POI list, determining track numbers, relative offsets, key point types and mileage data information of POI points of three types including a station administration boundary, a responder and a turnout on the basis of the step 201 and the step 202, and generating the POI list of the station, wherein the POI list can be used for designing a line track sampling point and generating fixed application data;
step 204: designing a line track information sampling table, and determining sampling points in a station jurisdiction range, wherein the sampling points comprise non-POI points and POI points; the content of the sample needs to include: latitude, longitude, elevation, mileage and the number of the track where the key point is located, and if the key point is the key point, the name of the key point needs to be provided;
step 205: and (3) measuring each data point in the sampling point table determined in the step 204 by using mapping equipment, and finally outputting a track geographic information basic data table for generating track geographic information data for the train control system.
4. The train control system track geographic information acquisition and processing method according to claim 3, characterized in that, step 201: dividing stations, specifically including:
first-stage initial measurement: the method comprises the following steps that a line design unit conducts preliminary measurement on line data according to economic transportation requirements, geological and landform and other data, and determines line trends, positions and station arrangement; and (3) second-stage determination: and according to the initial measurement result, further measuring the line data, synthesizing line conditions, and dividing stations and the jurisdiction range thereof according to the principle.
5. The train control system track geographic information acquisition and processing method according to claim 4, wherein in step 204, the interval of the sampling points does not exceed 3 meters.
6. The train control system track geographic information collection and processing method according to claim 5, wherein in step 205, the measurement of the route track other than the POI point is performed by sampling on the center line of each track, the measurement point of the turnout and the signal is the center position of the track corresponding to the POI point, and the measurement point of the transponder is the center position of the transponder.
7. The train control system track geographic information collection and processing method according to claim 6, wherein in step 205, the sampling precision is 0.2 m.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112304276A (en) * | 2020-11-30 | 2021-02-02 | 扬州微地图地理信息科技有限公司 | Geographic information engineering mapping device |
| CN112485818A (en) * | 2020-11-12 | 2021-03-12 | 卡斯柯信号有限公司 | Train control vehicle-mounted positioning method and system and vehicle-mounted terminal |
| CN112487121A (en) * | 2020-11-30 | 2021-03-12 | 扬州微地图地理信息科技有限公司 | Geographic information collection system |
| CN113428190A (en) * | 2021-07-27 | 2021-09-24 | 卡斯柯信号有限公司 | Train positioning method, device, equipment and medium based on railway electronic map |
| CN113954932A (en) * | 2021-11-01 | 2022-01-21 | 中国铁道科学研究院集团有限公司通信信号研究所 | Electronic map automatic generation method based on engineering line data |
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| CN112485818A (en) * | 2020-11-12 | 2021-03-12 | 卡斯柯信号有限公司 | Train control vehicle-mounted positioning method and system and vehicle-mounted terminal |
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| CN112304276A (en) * | 2020-11-30 | 2021-02-02 | 扬州微地图地理信息科技有限公司 | Geographic information engineering mapping device |
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| CN113954932A (en) * | 2021-11-01 | 2022-01-21 | 中国铁道科学研究院集团有限公司通信信号研究所 | Electronic map automatic generation method based on engineering line data |
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