CN110525484B - BDS and STP-based distance calculation implementation method for key points of shunting operation in station track - Google Patents
BDS and STP-based distance calculation implementation method for key points of shunting operation in station track Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or train for signalling purposes
- B61L15/0018—Communication with or on the vehicle or train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
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Abstract
The invention discloses a distance calculation implementation method of key points of shunting operation in a station track based on BDS and STP, which applies the current domestic mature Beidou positioning system (BDS) and utilizes a differential positioning technology to accurately calculate the positions of a shunting machine, shunting set operators and a connecting point; according to the track characteristics of the STP system in shunting operation, the distance from the front end of the moving train to a key protection point in the shunting operation process is calculated, an accurate distance is provided for the STP system, and the vehicle control speed limit is calculated and used as a vehicle control basis. Meanwhile, the position and the operation condition information of the members of the operation shunting group in the station can be intuitively and effectively mastered, the vehicles of the station track are evaluated, the marshalling and parking capacity calculation is further carried out, and the truest track parking capacity information is provided for station scheduling.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a BDS and STP-based method for realizing distance calculation of key points of shunting operation in a station track.
Background
In the process of on-site shunting operation, when a shunting machine pushes an operation train to enter a station track, and after the front end of the train passes over a station track protection signal machine, the distance between the shunting machine and a vehicle connection point in the station track is obtained, which is particularly important.
Because the front end of the operation vehicle train is generally various vehicles and does not have the condition of additionally installing vehicle-mounted fixed equipment, the following schemes are mainly adopted at present:
1) in the process of shunting operation in a station, shunting group personnel can only be relied on to watch at the front end of a walking train, the distance from a stop point is observed visually, then the distance is reported by voice through a handheld wireless leveling device, and a leveling signaling is sent by pressing the handheld terminal device, so that the walking distance and the speed limit of the operation train or the front distance prompt is carried out. In the operation process, due to the fact that the quality, the level and the experience condition levels of car leading personnel in front of the shunting train unit are not uniform, efficiency is affected if the speed is too low in the process of matching and propelling of the shunting train, and a safety problem is caused if the speed is too high. Furthermore, the device can cause excessive speed coupling, resulting in vehicle collision, derailment and even casualties.
2) The method comprises the steps of utilizing the field technical conditions of the existing STP system, after entering a station track branch hook and manually confirming, recording the position information of a vehicle staying in the station track by the system to serve as the protection distance for entering the station track next time. However, the disadvantages are: firstly, due to the limitation of technical conditions and operation conditions, track circuits of the stock tracks are required to be complete, and in the field, the storage line stock track is only provided with one section of track circuit, so that the calculation is invalid for safety consideration; secondly, in the process that the hook dividing operation is completed until the locomotive enters the station track again, the station track cannot be entered by other locomotives outside the system, otherwise, the original recording position is invalid. And finally, before the shunting machine enters the station track operation, the position information of the front end of the shunting machine is obtained through the operation running of the shunting machine and the occupation and clearing operation of the track section, and in the actual operation process, the situations of poor track circuit entry or locomotive running skidding, idling or communication faults and the like can occur, so that the running calculation is invalid, and the position information of the front end of the train can be lost. The information of the front end position of the operation train is invalid, so that the distance calculation of the vehicles staying in the station track is invalid.
3) The front end of the operation train is additionally provided with sensor ranging equipment such as radar, infrared rays and laser. However, in a railway station, the technical means of measuring distance by using light or electromagnetic wave reflected signals, such as infrared rays, lasers, radars, and the like, is ineffective due to the existence of complicated field conditions, such as curves, walking of people in a station track, blocking of obstacles, small distance between adjacent station tracks, and the like in the station track area. Interference factors which cannot be removed always exist, and the effectiveness and the credibility of the ranging data are influenced.
Therefore, an effective and reliable method and means for measuring the distance of the station track in the process of continuously hanging the station track are urgently needed.
Disclosure of Invention
The invention aims to provide a BDS and STP-based method for realizing distance calculation of key points of shunting operation in a station track, which can accurately calculate the distance from the front end of a moving train to the key protection points in the process of shunting operation.
The purpose of the invention is realized by the following technical scheme:
a distance calculation implementation method for key points of shunting operation in a station track based on BDS and STP comprises the following steps: the method comprises the following steps that a vehicle-mounted BDS terminal is additionally arranged on the existing STP vehicle-mounted equipment, a BDS differential base station and a server are additionally arranged on the ground, and the BDS differential base station and the server communicate with the existing STP cabinet; the dispatching group member holds the BDS terminal and is provided with a BDS receiver and a communication module with the STP system;
before the shunting locomotive pushes an operation train to enter a station track, a shunting group member holds a BDS terminal to be positioned at a station track stopping vehicle position, namely a connecting and hanging point position; when the shunting locomotive pushes the operation train to enter a station track, after the shunting locomotive crosses a near-end signal machine, the front distance is changed from the distance to the signal machine to the protection distance to the position of a staying vehicle connecting point; and calculating the protection distance from the front to the position of the connecting point according to the BDS position data of the hand-held BDS terminal of the shunting group member, the BDS position data of the shunting locomotive and the length data of the shunting locomotive and the operation train.
According to the technical scheme provided by the invention, the positions of the shunting machine, the shunting set operating personnel and the connecting points are accurately calculated by using the current domestic mature Beidou positioning system (BDS) and using the differential positioning technology; according to the track characteristics of the STP system in shunting operation, the distance from the front end of the moving train to a key protection point in the shunting operation process is calculated, an accurate distance is provided for the STP system (a wireless shunting locomotive signal and monitoring system), and the vehicle control speed limit is calculated and used as a vehicle control basis. Meanwhile, the position and the operation condition information of the members of the operation shunting group in the station can be intuitively and effectively mastered, the vehicles of the station track are evaluated, the marshalling and parking capacity calculation is further carried out, and the truest track parking capacity information is provided for station scheduling.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram of a calculation of a distance from a front end of a train to a hitch point according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a calculation of a length of a work vehicle train according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating calculation of a distance from the front end of the train to the station traffic signal according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a BDS and STP-based method for realizing distance calculation of key points of shunting operation in a station track, which comprises the following steps: a vehicle-mounted BDS terminal is additionally arranged on the existing STP vehicle-mounted equipment, a BDS differential base station and a server are additionally arranged on the ground (near a STP system of a station signal building), and the BDS differential base station and the server communicate with the existing STP cabinet; the hand-held BDS terminal of the shunting group member is provided with a BDS receiver and a communication module with the STP system.
The distance between the key points of the shunting operation in the embodiment of the invention mainly comprises the distance between the front end of the train and the connecting point and the distance between the front end of the train and the station signal machine.
The following describes the calculation process of the locomotive propelling the train into the track at the middle or tail of the train, stopping the vehicle (connecting point) near the track or approaching the far-end protection signal. In the whole shunting operation process, the vehicle-mounted BDS terminal and the BDS terminal held by shunting group members need to receive differential correction data of the BDS differential base station through respective communication units, and respective BDS position data are accurately calibrated.
1. And calculating the distance from the front end of the train to the hitch point.
Before the shunting locomotive pushes an operation train to enter a station track, a shunting group member holds a BDS terminal to be positioned at a station track stopping vehicle position, namely a connecting and hanging point position; when the shunting locomotive pushes the operation train to enter a station track, after the shunting locomotive crosses a near-end signal machine, the front distance is changed from the distance to the signal machine to the protection distance to the position of a staying vehicle connecting point; and calculating the protection distance from the front to the position of the coupling point according to the BDS position data of the BDS terminal held by the shunting group members, the BDS position data of the BDS terminal carried by the shunting locomotive and the length data of the shunting locomotive and the working train.
As shown in fig. 1, Dx is used as a near-end signal of the station track, and when the shunting locomotive pushes the working train to cross the Dx signal, the front distance becomes a protection distance to a staying vehicle connection point. Before the shunting locomotive and the train enter the station track, the shunting group members stop at the position of the train in the station track, namely, a hitching point waits, the BDS position data of the position is sent to the shunting locomotive STP vehicle-mounted host computer by holding the BDS terminal, the BDS position data of the onboard BDS terminal of the shunting locomotive is updated and calibrated in real time, and the distance A1 from the shunting locomotive to the hitching point position can be obtained by calculating the BDS position data of two points; the distance S between the front end of the shunting operation train and the connecting point is the required front protection distance: s ═ a1-a 2; wherein A2 is the calculated distance between the terminal of the vehicle-mounted BDS of the shunting locomotive and the front end of the operation train: the A2 is L2+ L, and the vehicle-mounted BDS terminal equipment is installed at the rear end of the shunting locomotive; or A2 is L, the vehicle-mounted BDS terminal equipment is arranged at the front end of the shunting locomotive; wherein, L2 is the length of the shunting locomotive, is a fixed parameter of the locomotive type, L is the length of the operation train, and does not contain the length of the shunting locomotive.
Here, the length L of the work train is calculated as follows:
as shown in fig. 2, when the shunting locomotive pushes the working train to pass through a complete section track circuit section P (for example, 12DG section in fig. 2), the displacement value of the shunting locomotive and the working train in the section track circuit section P from unoccupied time to occupied time is recorded as S1, the displacement value from occupied time to completely cleared time is recorded as S2, the length of the section track circuit section P is recorded as L1 from the basic data file, and the length of the shunting locomotive is L2, then the length of the working train is: L-S2-S1-L1-L2.
2. And calculating the distance from the front end of the train to the station signal machine.
As shown in fig. 3. Measuring BDS position data of signal machines at two ends of a station track in advance in the manufacturing process of station yard geographical coordinate data, and manufacturing the BDS position data into a basic data file; the basic data file is stored in a vehicle-mounted STP host of the shunting locomotive;
after the shunting locomotive pushes the vehicles staying in the station track connected with the front end of the operation train, the operation train becomes the existing operation train and the parked vehicles connected in the station track. In order to utilize the parking length of the station track to the maximum extent, after the continuous hanging is finished, the shunting locomotive can continue to push the operation train to be close to a far-end signal machine of the station track, in the operation process, shunting group members can get a train at the front end of the operation train, BDS position data calculated in real time through a handheld BDS terminal is transmitted back to shunting locomotive STP vehicle-mounted equipment and is calculated with the BDS position data of the vehicle-mounted BDS terminal of the shunting locomotive, and the distance B2 from the vehicle-mounted BDS terminal of the shunting locomotive to the front end of the operation train is calculated; in the process that the shunting locomotive pushes the shunting operation train to be close to the far-end annunciator, calculating the distance B1 from the shunting locomotive vehicle-mounted BDS terminal to the far-end annunciator in real time through the BDS position data of the shunting locomotive vehicle-mounted BDS terminal and the BDS position data of the far-end annunciator Xx in the basic data file stored in the shunting locomotive vehicle-mounted STP host, wherein the protection distance from the shunting operation train front end to the far-end protection annunciator is as follows: s' ═ B1-B2.
The scheme of the embodiment of the invention mainly adopts the following processing technologies: (1) the differential station is in data communication with a real-time radio station of a BDS mobile terminal of a vehicle-mounted member and a shunting group member, and differential correction data are sent; (2) collecting BDS coordinate data of protection signal machines at two ends of a station track in a manufacturing station in advance, and manufacturing the BDS coordinate data into a station key data file; (3) during the pulling-out and line-turning operation of the shunting operation train, calculating the length of a pushed train when the shunting operation propulsion train enters a station track by calculating the occupation of a track section, the clearing condition and the shunting machine walking displacement information and combining the length of the walking section; (4) the shunting group member needs to stay at the position of the train connecting and hanging point in the station track and sends the position information of the point to the vehicle-mounted STP system; (5) in the process of pushing the approaching protection annunciator by the shunting train, shunting group members need to lead a train at the front end and send real-time position information to the vehicle-mounted STP system.
According to the scheme of the embodiment of the invention, the distance from the front end of the shunting pushing train to the station track stop vehicle is calculated by combining the wireless shunting monitoring system and the Beidou positioning system positioning technology, so that a reliable basis is provided for the calculation of the coupling speed of shunting operation, and the safety of shunting operation is protected.
Firstly, the length of a push train is calculated by calculating the whole process of the operation process of the switching train, combining the occupation and clear acquisition information of a station track section in the travelling process of the train and the calculation of the travelling displacement of the locomotive, and further the length can be converted into the number of vehicles to be used as the basis of the safety control of the locomotive and can also provide auxiliary information of the parking condition in a station.
Secondly, the distance between the front end of the shunting operation and the hanging point is calculated by the method and can be used as a calculation basis of a shunting protection speed limit curve, and accidents such as hook collision, derailment and the like caused by overspeed hanging are prevented.
And secondly, the distance between the front end of the vehicle and the far-end protection signal machine of the station track is calculated by the method, the front-end protection distance can be provided for STP (spanning tree protocol) and used as a safety speed limit curve, so that the front end of the vehicle is prevented from rushing out of the far-end signal machine to cause illegal invasion of a main line, the influence on the main line departure and the main line approach of the main line is caused, the running safety of passengers and trucks is influenced, and the main line accidents of the passengers and trains are caused.
And secondly, the invention can calculate the distance length from the vehicle connected in the station track to the signal machine at the far end of the station track in the operation process of shunting in the station track by combining the BDS and the STP, thereby preventing the error caused by the manual visual distance measurement of shunting group members from influencing the efficiency and the safety.
Finally, the invention can provide a technical equipment support means for the accurate control of the shunting and running speed. Meanwhile, safety accidents caused by driver-out-of-control due to careless operation of shunting operators can be prevented.
Through the above description of the embodiments, it is clear to those skilled in the art that the above embodiments can be implemented by software, and can also be implemented by software plus a necessary general hardware platform. With this understanding, the technical solutions of the embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments of the present invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A BDS and STP-based method for realizing distance calculation of key points of shunting operation in a station track is characterized by comprising the following steps: the method comprises the following steps that a vehicle-mounted BDS terminal is additionally arranged on the existing STP vehicle-mounted equipment, a BDS differential base station and a server are additionally arranged on the ground, and the BDS differential base station and the server communicate with the existing STP cabinet; the dispatching group member holds the BDS terminal and is provided with a BDS receiver and a communication module with the STP system;
before the shunting locomotive pushes an operation train to enter a station track, a shunting group member holds a BDS terminal to be positioned at a station track stopping vehicle position, namely a connecting and hanging point position; when the shunting locomotive pushes the operation train to enter a station track, after the shunting locomotive crosses a near-end signal machine, the front distance is changed from the distance to the signal machine to the protection distance to the position of a staying vehicle connecting point; calculating a protection distance from the front to the position of the connecting point according to BDS position data of the hand-held BDS terminal of the shunting group member, BDS position data of a shunting locomotive and length data of the shunting locomotive and an operation train;
the method for calculating the length of the work train comprises the following steps:
in the process of pushing the working train to run by the shunting locomotive, when a complete section track circuit section P is passed, the shunting locomotive and the working train are in the section track circuit section P, the displacement value from the unoccupied time to the occupied time is recorded as S1, the displacement value from the occupied time to the complete clear time is recorded as S2, the length of the section track circuit section P is recorded as L1 through a basic data file, the shunting locomotive is L2, and the working train length is as follows: L-S2-S1-L1-L2.
2. The method for realizing distance calculation of key points of shunting operation in a station track based on BDS and STP as claimed in claim 1, wherein the calculating of the guard distance from the front to the hitching point position according to the BDS position data of the handheld BDS terminal of the shunting group member, the BDS position data of the shunting locomotive and the length data of the shunting locomotive and the operation train comprises:
calculating the position distance A1 from the BDS terminal on the shunting locomotive to the hitching point according to the BDS position data of the BDS terminal held by the shunting group members and the BDS position data of the BDS terminal on the shunting locomotive;
according to the distance length from the shunting locomotive BDS terminal to the front end of the operation train: the terminal A2 is L2+ L, the terminal A2 is L, the terminal vehicle BDS is mounted at the front end of the shunting locomotive; wherein, L2 is the length of the shunting locomotive, which is the fixed length of the local locomotive, L is the length of the operation train, and the length obtained by dynamic calculation in the operation process;
calculating the protection distance between the front and the connection point: and S is A1-A2.
3. The method for realizing distance calculation of key points of shunting operation in a station track based on BDS and STP as claimed in claim 1, further comprising:
in the process of manufacturing station yard geographical coordinate data, BDS position data of annunciators at two ends of a station track are measured in advance and manufactured into a basic data file, and the basic data file is stored in a vehicle-mounted STP host of a shunting locomotive;
after the shunting locomotive pushes the vehicles staying in the connected station track at the front end of the operation train, the operation train becomes the existing operation train and the parked vehicles connected in the station track; after the connection and the hanging are finished, the shunting locomotive can continue to push the operation train to be close to the far-end annunciator of the station track, in the operation process, shunting group members can get the train at the front end of the operation train, calculate BDS position data in real time through the handheld BDS terminal of the shunting locomotive, transmit the BDS position data back to the shunting locomotive STP vehicle-mounted equipment, calculate the BDS position data of the shunting locomotive vehicle-mounted BDS terminal, and calculate the distance from the shunting locomotive vehicle-mounted BDS terminal to the front end of the operation train, namely B2;
in the process that the shunting locomotive pushes the operation train to approach the far-end annunciator, calculating the distance B1 from the vehicle-mounted BDS terminal of the shunting locomotive to the far-end annunciator in real time through the BDS position data of the vehicle-mounted BDS terminal of the shunting locomotive and the BDS position data of the far-end annunciator in the basic data file stored in the vehicle-mounted STP host of the shunting locomotive;
thereby calculate the protection distance from the front end of the shunting operation train to the far-end signal machine as: s' ═ B1-B2.
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| CN111874047B (en) * | 2020-07-14 | 2022-04-12 | 中国国家铁路集团有限公司 | Railway transition cross-region shunting operation organization system and method |
| CN113997975B (en) * | 2020-07-28 | 2022-11-22 | 株洲中车时代电气股份有限公司 | Automatic shunting data processing method and device and related components |
| CN114524003B (en) * | 2022-04-24 | 2022-07-15 | 北京北交信通科技有限公司 | Method for calculating distance between tail and staying vehicle in operation of transferring vehicle to roof |
| CN116605270A (en) * | 2023-07-21 | 2023-08-18 | 成都劳杰斯信息技术有限公司 | Calculation method for railway shunting station parking position |
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