CN111897901B - Rail geographic information acquisition and processing method for train control system - Google Patents
Rail geographic information acquisition and processing method for train control system Download PDFInfo
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Abstract
The invention relates to a train control system orbit geographic information acquisition and processing method, orbit geographic information is basic data that train control vehicle-mounted equipment is used for satellite positioning and running, the method is to divide the route into a plurality of areas according to the jurisdiction of the station, then divide each station into a plurality of orbit segments according to the straight line, curve with the same radius and turnout distribution condition, confirm the POI sampling point to be measured; and carrying out necessary field measurement by utilizing the corresponding relation of the coordinates of the piles in the line and the corresponding relation of the coordinates of the intersection points in the line, which are established in the process of reconnaissance design, so as to complete information acquisition of information such as latitude, longitude, elevation, line mileage and the like of the POI points. And (3) checking and adjusting the validity of the acquired 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 of a train control system.
Background
With the strong promotion of satellite positioning technology, a train control system based on satellite positioning is used for carrying out theoretical research and application, and orbit geographic information data is the basis of the train control system. The orbit geographic information data covers the corresponding relation between the longitude and latitude data of satellite positioning and orbit position data, the accuracy of the data is directly related to the accuracy of train positioning, the train positioning failure can be caused by the error of the orbit geographic information data, and the train operation safety is affected by the serious error of the orbit geographic information data. It is therefore necessary to conduct an intensive study of each step of acquisition and generation of track geographic information data to ensure the integrity and consistency of the map data.
The current domestic research on the track geographic information data used by the novel train control system is still in a starting stage, and the research on the track geographic information data is less, and specific method guidance is lacking from earlier design, acquisition measurement, data processing and generation of the track geographic information data.
Disclosure of Invention
The invention provides a method for collecting and processing geographical information of a train control system track, which solves the problems in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the track geographic information acquisition and processing method of the train control system comprises the following steps:
step 1: starting design, outputting a route POI list by a route design unit according to the specification, and determining a specific route track sampling point table according to the POI list;
step 2: the data acquisition, the measurement unit adopts high-precision mapping equipment to measure the central line and POI of each track line according to the requirement, and the track geographic information basic data is output;
step 3: compiling data, namely compiling the measured rail geographic information basic data into a binary data file which can be identified according to specifications;
step 4: the data use, the correct track geographic information binary file is downloaded to the ground equipment of the train control system, the ground equipment of the train control system and the mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established between the ground equipment of the train control system and the ground equipment of the train control system through a wireless network, and the track geographic information data is sent to the vehicle-mounted equipment for positioning and running of the train;
step 5: and (3) archiving the data, and archiving and storing the output track geographic information data.
Further, the method also comprises the step 6: when the data is outdated, when the line is changed, the original track geographic information data is destroyed, the steps 1 to 5 are repeated, and new version data is updated and used.
Further, step 2: the data acquisition specifically comprises the following steps:
step 201: dividing stations;
step 220: based on the stations divided in the step 201, dividing the line of 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 three types of POIs of a station jurisdiction boundary, a transponder and a turnout on the basis of the step 201 and the step 202, generating the POI list of the station, and being capable of being used for designing route track sampling points and generating fixed application data;
step 204: designing a line track information sampling table, and determining sampling points in the jurisdiction range of the station, 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, if the key point is needed to be provided with the key point name;
step 205: and 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.
Further, step 201: dividing stations, specifically including:
first stage initial measurement: the line design unit performs preliminary measurement on line data according to the data such as economic transportation requirements, geological features and the like, and determines the line trend, the position and the station arrangement; and (3) determining: and (3) carrying out further measurement on the line data according to the initial measurement result, and dividing the station and the jurisdiction thereof according to the principle by integrating the line conditions.
Further, in step 204, the sampling points are spaced no more than 3 meters apart.
Further, in step 205, the track of the non-POI point is measured by sampling on the central line of each track, the measuring points of the turnout and the annunciator are the central positions of the tracks corresponding to the POI point, and the measuring points of the transponder are the central positions of the transponder;
further, in step 205, the sampling accuracy is required to be 0.2 meters.
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 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 sampling points to be measured; and carrying out necessary field measurement by utilizing the corresponding relation of the coordinates of the piles in the line and the corresponding relation of the coordinates of the intersection points in the line, which are established in the process of reconnaissance design, so as to complete information acquisition of information such as latitude, longitude, elevation, line mileage and the like of the POI points. And (3) checking and adjusting the validity of the acquired POI data, and generating a binary file for the train control system through computer software. The method ensures the consistency and the integrity of the geographic information data of the track, and has important significance for accurate positioning and safe running of the train.
Drawings
Fig. 1 is a diagram of a track geographic information data lifecycle of the method of the present invention.
Fig. 2 is a flow chart of the acquisition of rail geographic information data of the method of the present invention.
Fig. 3 is a flow chart of a method of 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 accompanying examples, and it is apparent that the described examples are only some, but not all, examples of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a method for collecting and processing rail geographic information data, which constructs a full life cycle from collecting, processing, using and archiving the rail geographic information data to outdated, starts from two stages of data collecting and processing, provides a specific method for collecting and measuring the rail geographic information data, and processes the collected 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 rail geographic information data, ensuring the consistency and the integrity of the rail geographic information data, and has important significance for accurate positioning and safe running of the train.
The invention will be described in detail below with reference to the drawings and the detailed description.
Referring to fig. 1, the method for collecting and processing geographical information of a train control system track comprises the following steps:
step 1, starting design: the line design unit outputs a line POI list (Point of Interest, key points) according to the specification, and then determines a specific line track sampling point table according to the POI list;
step 2, data acquisition: the measurement unit adopts high-precision mapping equipment to measure the central line and POI of each track line according to the requirement and output track geographic information basic data;
step 3, data compiling: the measured rail geographic information basic data are compiled into a binary data file which can be identified according to the specification;
step 4, data use: the correct track geographic information binary file is downloaded to the ground equipment of the train control system, the ground equipment of the train control system and the mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established between the ground equipment of the train control system and the ground equipment of the train control system through a wireless network, and track geographic information data are sent to vehicle-mounted equipment for positioning and running of the train;
step 5, data archiving: and archiving and storing the output track geographic information data.
Step 6, data outdated: when the line is changed, the original track geographic information data is destroyed, the steps 1 to 5 are repeated, and new version data is updated and used.
Referring to fig. 2, step 2 data acquisition of track geographic information: the method comprises the following steps:
step 201: dividing stations, first stage (initial test): the line design unit performs preliminary measurement on line data according to the data such as economic transportation requirements, geological features and the like, and determines the line trend, the position and the station arrangement; second stage (determination): and (3) carrying out further measurement on the line data according to the initial measurement result, and dividing the station and the jurisdiction thereof according to the principle by integrating the line conditions.
Step 202: based on the stations divided in the step 201, laying out switches in the stations according to the driving organization, the transportation requirement and the geological condition of each station, and determining the station type of the station; on the basis, the tracks are divided according to the track dividing principle, and corresponding track numbers are set.
Step 203: the POI list is designed, and on the basis of the steps 201 and 202, the data information of the rail number, the relative offset, the key point type, the mileage and the like of the three types of POIs of the station jurisdiction boundary, the transponder and the turnout are determined, so that the POI list of the station is generated, and the POI list can be used for designing the sampling points of the route rail and generating the fixed application data.
Step 204: designing a line track information sampling table, and determining sampling points in the jurisdiction range of the station according to the requirement that the interval of 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, track number, if the key point should be provided with the key point name, as shown in the following table.
Step 205: measuring each data point in the sampling point table determined in the step 204 by adopting high-precision mapping equipment, wherein the measurement of the line track of the non-POI points is to sample on the central line of each track, the measuring points of the turnout and the annunciator are the central positions of the tracks corresponding to the POI points, and the central positions of the measuring point transponders of the transponders; the sampling precision is required to be 0.2 meter; the track geographic information base data table may be output eventually 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 binary files for the novel train control system according to the track geographic information basic data acquired and measured on site and the defined data structure format. The compiling of the rail geographic information data is mainly divided into three parts, namely forward compiling, verifying and confirming of the data, each link of the forward compiling 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 line needs to be confirmed so as to confirm whether the train operation positioning requirement can be met. As shown in fig. 3:
(1) Forward programming: the left branch of the model of fig. 3 is divided into three phases: the basic data table 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 jurisdiction area of ground equipment of a train control system, and the binary file is a binary data file stored by the engineering data table according to a specified data structure format.
(2) And (3) data verification: verifying each link of forward programming, and checking logic validity of 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 analyzed engineering data with the engineering data of the forward programming process to ensure the consistency of the two engineering data; and checking the analysis data with 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 validation: and configuring the compiled track geographic information binary file into corresponding equipment for on-site joint debugging joint testing simulation confirmation, so as to ensure that the running requirement of the train can be met.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Any partial modification or replacement within the technical scope of the present disclosure by any person skilled in the art should be included in the scope of the present disclosure.
Claims (6)
1. The train control system track geographic information acquisition and processing method is characterized in that:
the method comprises the following steps:
step 1: starting design, outputting a route POI list by a route design unit according to the specification, and determining a specific route track sampling point table according to the POI list;
step 2: the method comprises the steps of data acquisition, wherein a measurement unit adopts high-precision mapping equipment to measure the center line and POI of each track line according to requirements on the basis of the corresponding relation between the coordinates of piles in the track line and the corresponding relation between the coordinates of intersection points of the track in the track line established in the process of reconnaissance design, and outputs track geographic information basic data;
step 3: compiling data, namely compiling the measured rail geographic information basic data into a binary data file which can be identified according to specifications;
step 4: the data use, the correct track geographic information binary file is downloaded to the ground equipment of the train control system, the ground equipment of the train control system and the mobile communication core network transmit information in a wired mode, when a train passes through an area, communication is established between the ground equipment of the train control system and the ground equipment of the train control system through a wireless network, and the track geographic information data is sent to the vehicle-mounted equipment for positioning and running of the train;
step 5: the data archiving, the geographic information data of orbit that will be outputted is archived and stored;
step 2: the data acquisition specifically comprises the following steps:
step 201: dividing stations;
step 220: based on the stations divided in the step 201, dividing the line of 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, and determining station jurisdiction on the basis of step 201 and step 202
The track number, the relative offset, the key point type and the mileage data information of the boundary, the transponder and the turnout POI point are used for generating a POI list of a station, and 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 the jurisdiction range of the station, 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, if the key point is needed to be provided with the key point name;
step 205: and 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 base data table for generating track geographic information data for the train control system.
2. The method for collecting and processing the geographic information of the train control system track according to claim 1, further comprising the step of 6:
when the data is outdated, when the line is changed, the original track geographic information data is destroyed, the steps 1 to 5 are repeated, and new version data is updated and used.
3. The method for collecting and processing geographical information of a train control system track according to claim 2, wherein the method comprises the following steps: dividing stations, specifically including:
first stage initial measurement: the line design unit performs preliminary measurement on the line data according to economic transportation requirements and geological and geomorphic data to determine the line trend, the position and the station arrangement; and (3) determining: and (3) carrying out further measurement on the line data according to the initial measurement result, and dividing the station and the jurisdiction thereof according to the principle by integrating the line conditions.
4. The method for collecting and processing geographic information of a train control system as recited in claim 3, wherein in step 204, the sampling points are spaced apart by not more than 3 meters.
5. The method of claim 4, wherein in step 205, the track of the non-POI is sampled on the center line of each track, the points of measurement of the switch and the signal are the center positions of the track corresponding to the POI, and the points of measurement of the transponder are the center positions of the transponder.
6. The method for collecting and processing rail geographic information of a train control system according to claim 5, wherein in step 205, the sampling accuracy is 0.2 m.
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| CN112485818B (en) * | 2020-11-12 | 2022-07-05 | 卡斯柯信号有限公司 | Train control vehicle-mounted positioning method and system and vehicle-mounted terminal |
| 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 |
| 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 |
| CN113428190B (en) * | 2021-07-27 | 2022-07-08 | 卡斯柯信号有限公司 | Train positioning method, device, equipment and medium based on railway electronic map |
| CN113954932B (en) * | 2021-11-01 | 2024-09-24 | 中国铁道科学研究院集团有限公司通信信号研究所 | Automatic electronic map generation method based on engineering line data |
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| CN106445987A (en) * | 2016-05-27 | 2017-02-22 | 中国铁道科学研究院通信信号研究所 | CIR geographic information database establishment and verification method |
| CN108482428A (en) * | 2018-01-29 | 2018-09-04 | 浙江网新技术有限公司 | A kind of train locating method based on curvature array correlation |
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| CN106445987A (en) * | 2016-05-27 | 2017-02-22 | 中国铁道科学研究院通信信号研究所 | CIR geographic information database establishment and verification method |
| CN108482428A (en) * | 2018-01-29 | 2018-09-04 | 浙江网新技术有限公司 | A kind of train locating method based on curvature array correlation |
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