CN113619649A - Control method and system for passing neutral section of heavy-duty train - Google Patents
Control method and system for passing neutral section of heavy-duty train Download PDFInfo
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- CN113619649A CN113619649A CN202110894874.6A CN202110894874A CN113619649A CN 113619649 A CN113619649 A CN 113619649A CN 202110894874 A CN202110894874 A CN 202110894874A CN 113619649 A CN113619649 A CN 113619649A
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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 relates to a control method and a system for passing neutral section of a heavy-duty train, wherein the method comprises the following steps: step S1: the vehicle-mounted equipment acquires the speed, the position and the running direction of the train through a speed and distance measuring unit; step S2: before the phase separation area, the vehicle-mounted equipment acquires the passing phase separation information through a wireless transmission unit and a transponder receiving unit; step S3: the vehicle-mounted equipment draws a speed curve according to the passing split-phase information and the train speed and position information; step S4: and the vehicle-mounted equipment completes passing through the phase splitting according to the speed curve. Compared with the prior art, the invention has the advantages of high safety, high efficiency, high precision and the like.
Description
Technical Field
The invention relates to the field of passing neutral section of rail transit trains, in particular to a control method and a control system for passing neutral section of a heavy-load train.
Background
Heavy haul transport is the mainstream direction in the development of railroad freight. With the increasing of the train quality and the marshalling length, the problem of operation safety is highlighted, and serious accidents such as coupler breakage, large longitudinal impulse, train derailment and the like can occur on some sections with difficult operation. The electric locomotive of the electrified railway adopts single-phase power supply, generally carries out phase sequence alternate power supply for balancing each phase load of an electric power system, and an electric phase splitting is arranged in a contact net to electrically isolate different phases of electricity so as to avoid interphase short circuit.
The existing heavy-duty train passing neutral section adopts ground magnetic steel or senses network voltage or current change to carry out passing neutral section, the magnetic steel passing neutral section means that when a locomotive runs along a rail, a vehicle-mounted sensor firstly senses the ground magnetic steel and sends a pre-warning interruption signal to a motor train control system, a driver cuts off traction, when the locomotive runs to a forced interruption signal position, the locomotive immediately breaks off a main interruption, and after a driving phase separation area, the main interruption is closed and traction is recovered. When the car is driven to separate from the phase separation region, a driver needs to accelerate the heavy-duty train by experience, the operation is difficult and great, and the hidden danger of serious accidents such as breakage of the car coupler and the like exists. Sensing the voltage or current change of the contact network to perform the passing neutral section means that after the locomotive passes through the neutral section of the contact network, a plurality of auxiliary machines are started to automatically complete the passing neutral section operation, and the auxiliary machines under the controller are controlled to be opened and closed according to a comparison result through a voltage comparator.
The prior art is mainly summarized in the following disadvantages:
1) the currently used neutral section is automatically pressed by a driver according to experience and prompt to disconnect a main circuit breaker, so that automatic driving cannot be realized;
2) the judgment of passing neutral section at present is to judge whether the train reaches a neutral section area through the distance, if the train speed is too low, the passing neutral section can cause the train to stop in the passing neutral section area according to the distance;
3) at present, the over-phase separation distance is judged according to a kilometer post provided by LKJ equipment, so that errors can possibly influence the accuracy degree of the over-phase separation;
at present, when a driver drives away from a phase separation region, if the driver does not operate properly, the risk of breakage of a coupler of a train can be caused.
Through retrieval, publication No. CN207826265U discloses a heavy haul train passing neutral section system and a heavy haul train, the heavy haul train passing neutral section system comprises a vehicle-mounted device and a passing neutral section device which are connected with each other, the position and the speed of the heavy haul train are determined through the vehicle-mounted device, and a passing neutral section instruction is issued, so that the opening and the closing of a main circuit breaker of the heavy haul train are controlled. The utility model discloses a guarantee that the automatic accurate phase separation district that passes through of train guarantees not to apply air brake at the train phase separation in-process that crosses. However, the utility model does not consider the case where the speed is too low to pass through the split-phase region; and when the vehicle leaves the passing neutral section area, the acceleration is slow, and the running efficiency is not high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a control method and a control system for passing through neutral section of heavy-duty train, which have high safety, high efficiency and high precision.
The purpose of the invention can be realized by the following technical scheme:
according to a first aspect of the invention, a method for controlling passing through neutral section of a heavy-duty train is provided, which comprises the following steps:
step S1: the vehicle-mounted equipment acquires the speed, the position and the running direction of the train through a speed and distance measuring unit;
step S2: before the phase separation area, the vehicle-mounted equipment acquires the passing phase separation information through a wireless transmission unit and a transponder receiving unit;
step S3: the vehicle-mounted equipment draws a speed curve according to the passing split-phase information and the train speed and position information;
step S4: and the vehicle-mounted equipment completes passing through the phase splitting according to the speed curve.
Preferably, the step S1 further includes correcting the speed and distance measuring unit by the transponder receiving unit.
Preferably, the correction is in particular: after the train is positioned by the speed and distance measuring unit, when the train passes through the connected entity transponder group, the vehicle-mounted equipment corrects the accumulated running distance, the underreading error and the overreading error of the train according to the transponder link distance, and clears the underreading error and the overreading error.
Preferably, the step S3 is specifically: and the vehicle-mounted equipment draws a speed curve according to the passing split-phase information, the train speed and the position information, provides a speed interval required by passing the split-phase area, and displays the speed interval to a driver on a human-computer interface DMI.
Preferably, the oversubscribed information includes the length of the phase section, the distance of the phase section from the last valid physical transponder, the front slope and the allowable driving distance.
Preferably, the step S4 specifically includes the following sub-steps:
step S41: when the train is away from a set value of a phase separation area, the vehicle-mounted equipment prompts a driver to obtain distance information of the train away from the phase separation area, the main circuit breaker is ready to be disconnected, the driver is disconnected from a traction brake handle at the moment, the handle is stepped back, and when the train reaches the boundary of the phase separation area, the main circuit breaker is disconnected;
step S42: before passing through the phase separation area, comprehensively considering the distance, the head speed and the tail speed of the phase separation area to ensure that the state speed of the train in the coasting state is in a speed interval given by a speed curve in the phase separation area;
step S43: when the vehicle-mounted equipment calculates that the train crosses the phase separation area, the output of a main breaker disconnection instruction to the train is stopped, and the pantograph senses the change of the contact network voltage and automatically closes the main breaker to complete phase separation.
Preferably, in step S42, specifically, the method includes:
prompting a driver to accelerate or decelerate before a phase separation area according to the speed of the train head and the train tail, enabling the train to run to a position for cutting off traction, and cutting off a main break at a position for cutting off the main break;
when the phase separation zone information is received, if the speed of the tail of the train is lower than the speed of the train passing through the phase separation zone safely, the vehicle-mounted equipment prompts a driver to accelerate through the DMI, and the distance required by the speed acceleration of the tail of the train is taken into consideration of the safe distance of the train, so that the driver can control the running speed of the train integrally and pass through the phase separation zone;
after the train head and the train tail pass through the phase separation area, the vehicle-mounted equipment judges the speed difference between the train head and the train tail to give a speed curve, so that a driver can safely control the train to pass through the phase separation area.
According to a second aspect of the invention, a system for the control method of the passing neutral section of the heavy-duty train is provided, and the system comprises an on-board host OBS module arranged on the train and a safety train tail module arranged at the train tail; the safety train tail module acquires the speed of a train tail and provides the speed for the OBS module, and the OBS module is used for acquiring the position and the speed of a train head of the heavy-duty train and issuing a phase-passing instruction.
Preferably, the on-board unit OBS module comprises an ATP master control unit, and a speed and distance measuring unit, a wireless transmission unit and a transponder receiving unit which are respectively connected with the ATP master control unit; the speed and distance measuring unit is used for acquiring the speed, the position and the running direction of the train; the responder receiving unit is used for acquiring the passing split-phase information and correcting the speed and distance measuring unit; the wireless transmission unit is used for communicating with RBC ground equipment to obtain the front slope of the heavy-duty train and the allowed driving distance to the ATP main control unit.
Preferably, the on-board unit OBS module further comprises a DMI display unit for displaying the column control information.
Compared with the prior art, the invention has the following advantages:
1) the train control vehicle-mounted equipment comprises wireless communication equipment which is used for communicating with RBC ground equipment to obtain the front gradient and the traveling permission distance of the heavy-duty train, the speed of the heavy-duty train can be reduced or accelerated in advance by judging the distance between the train and a phase separation area and the gradient of a current line, a phase separation instruction is issued according to the position and the speed of the heavy-duty train, the disconnection and the closing of a main breaker of the heavy-duty train are controlled according to the phase separation instruction, and the condition that the train is in an idle state cannot exceed the speed limit in the phase separation area is guaranteed.
2) The train control onboard equipment performs fusion processing on the speed of the head of the train, the speed of the tail of the train and the position of the train, calculates the running time and the speed of the train in the phase separation area, and avoids the condition that the train cannot pass through the phase separation area due to too low speed;
3) the train control vehicle-mounted equipment can accurately determine the position of the train based on the last transponder and the position of the phase separation area through the speed and distance measuring unit, so that the accuracy degree of the phase separation is enhanced;
4) when the train control vehicle-mounted equipment drives away from the phase separation area, the speed of the train head and the speed of the train tail are comprehensively considered, a driver is reminded of accelerating, and the operation efficiency is improved under the condition of ensuring safety;
5) the magnetic steel is not needed to pass through phase splitting, and the investment cost is effectively saved.
Drawings
FIG. 1 is a diagram of a train control onboard equipment architecture of the present invention;
FIG. 2 is a logic diagram of the passing phase separation of the heavy-duty train of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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 some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
An embodiment of the system of the present invention is given below. A heavy-duty train passing neutral section system as shown in fig. 1, the system comprising: train, vehicle carried host OBS and safe train tail; the on-board host OBS comprises an ATP main control unit, a speed and distance measuring unit, a wireless transmission unit and a responder receiving unit. And the vehicle-mounted host OBS is used for determining the position of the heavy-duty train and the speed of the train head, and the safe train tail provides the speed of the train tail and provides the speed for the vehicle-mounted host OBS. The vehicle-mounted host computer issues a neutral section passing instruction according to the position, the head speed and the tail speed of the heavy-duty train and controls the opening and closing of a main breaker of the heavy-duty train.
An embodiment of the method of the present invention is given below in conjunction with fig. 2.
The requirement of a passing phase separation scene of the heavy-duty train is met, the heavy-duty train efficiently passes through the phase separation area under the condition that the running safety of the heavy-duty train is guaranteed, and the running efficiency is improved. According to the method, the train stably passes through the phase separation area before passing through the phase separation area, the control difficulty of a driver for operating the heavy-duty train to pass through the phase separation area is reduced, and the running efficiency is improved.
The vehicle-mounted equipment acquires the position of the train through a speed and distance measuring unit in the equipment.
When the train passes through the entity transponder, the vehicle-mounted equipment can determine the initial train position according to the position of the entity transponder.
After the train is positioned, when the train passes through the linked entity transponder group, the speed measurement positioning system can correct the accumulated running distance, the underreading error and the overreading error of the train according to the link distance of the transponder, and the underreading error and the overreading error are cleared, so that the positioning accuracy is further improved.
Before passing through the phase separation area, the train control vehicle-mounted equipment acquires phase separation area information through the wireless communication equipment, meanwhile, the entity transponder also provides the train control vehicle-mounted equipment with passing phase separation information, the passing phase separation information comprises information such as the length of the phase separation area and the distance information of the phase separation area from the last entity transponder, and two receiving channels guarantee that the phase separation area information can be normally received.
The train control vehicle-mounted equipment adds the information of the position of the phase separation area, the length of the phase separation area and the like into the train curve calculation, and simultaneously prompts a driver to accelerate or decelerate before the phase separation area according to the speed of the train head and the train tail so that the train can cut off traction when running to a cut-off traction position, and can cut off the main cut-off when cutting off the main cut-off position.
When the phase separation zone information is received, if the speed of the tail of the train is lower than the speed of the train passing through the phase separation zone safely, the vehicle-mounted equipment prompts a driver to accelerate through the DMI, and the distance required by the speed increase of the tail of the train is taken into account in the safe distance of the train, so that the driver can control the running speed of the train integrally and smoothly pass through the phase separation zone.
After the train head and the train tail pass through the phase separation area, the train control vehicle-mounted equipment judges the speed difference between the train head and the train tail to give a speed curve, so that the operation difficulty of a driver is reduced, and the driver can safely control the train to pass through the phase separation area.
As shown in fig. 2, the method for controlling passing neutral section of heavy-duty train provided by the present invention specifically includes the following steps:
step S1: the vehicle-mounted equipment calculates the speed, the position and the running direction of the current heavy-load train according to the speed and distance measuring unit, and corrects the speed and distance measuring through the transponder to ensure the validity of the train position;
step S2: the vehicle-mounted equipment acquires the phase separation area information by connecting RBC through a wireless transmission unit according to the current train position or acquires the phase separation area information through a responder receiving unit, and the distance between the phase separation area and the last effective responder can be obtained;
step S3: the vehicle-mounted equipment comprehensively considers the position of the phase separation zone and the position and the speed of the current train to draw a speed curve, provides a speed interval required by passing through the phase separation zone, and displays the speed interval on the DMI to a driver
Step S4: the driver completes the split-phase passing operation according to the speed curve displayed on the DMI. When the train is at a certain distance from the phase separation area, the vehicle-mounted equipment prompts a driver how much distance is left for phase separation, the main circuit breaker is ready to be disconnected, the driver is disconnected to pull the brake handle, the handle is disconnected, the grade withdrawal is completed, and when the train reaches the boundary of the phase separation area, the main circuit breaker is disconnected. Before passing the phase separation, the distance of the phase separation area, the speed of the train head and the speed of the train tail are comprehensively considered, so that the condition that the train idles in the phase separation area cannot exceed the speed limit, and the train cannot stop in the phase separation area due to too low speed. When the vehicle-mounted equipment calculates that the train crosses the phase separation area, the output of a main breaker disconnection instruction to the train is stopped, and the pantograph senses the change of the contact network voltage and automatically closes the main breaker to complete the phase separation function.
Through above technical scheme, adopt safe train tail, control that can be accurate is listed as tail speed, avoids because heavy haul train overlength, and the speed of only monitoring the train locomotive is not enough to describe the running state of whole train, has avoided heavy haul train to stop in the phase zone, guarantees the accurate phase zone of passing through of train.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A control method for passing neutral section of heavy-duty train is characterized by comprising the following steps:
step S1: the vehicle-mounted equipment acquires the speed, the position and the running direction of the train through a speed and distance measuring unit;
step S2: before the phase separation area, the vehicle-mounted equipment acquires the passing phase separation information through a wireless transmission unit and a transponder receiving unit;
step S3: the vehicle-mounted equipment draws a speed curve according to the passing split-phase information and the train speed and position information;
step S4: and the vehicle-mounted equipment completes passing through the phase splitting according to the speed curve.
2. The method for controlling passing neutral section of heavy-duty train according to claim 1, wherein said step S1 further comprises calibrating the speed measuring and distance measuring unit by the transponder receiving unit.
3. The method for controlling passing through neutral section of heavy-duty train according to claim 2, wherein said calibration is specifically: after the train is positioned by the speed and distance measuring unit, when the train passes through the connected entity transponder group, the vehicle-mounted equipment corrects the accumulated running distance, the underreading error and the overreading error of the train according to the transponder link distance, and clears the underreading error and the overreading error.
4. The method for controlling passing through neutral section of heavy-duty train according to claim 1, wherein said step S3 is specifically: and the vehicle-mounted equipment draws a speed curve according to the passing split-phase information, the train speed and the position information, provides a speed interval required by passing the split-phase area, and displays the speed interval to a driver on a human-computer interface DMI.
5. The method as claimed in claim 1 or 4, wherein the passing phase information includes the length of the phase separation zone, the distance between the phase separation zone and the last valid physical transponder, the front gradient and the allowable driving distance.
6. The method for controlling passing through neutral section of heavy-duty train according to claim 1, wherein said step S4 specifically includes the following substeps:
step S41: when the train is away from a set value of a phase separation area, the vehicle-mounted equipment prompts a driver to obtain distance information of the train away from the phase separation area, the main circuit breaker is ready to be disconnected, the driver is disconnected from a traction brake handle at the moment, the handle is stepped back, and when the train reaches the boundary of the phase separation area, the main circuit breaker is disconnected;
step S42: before passing through the phase separation area, comprehensively considering the distance, the head speed and the tail speed of the phase separation area to ensure that the state speed of the train in the coasting state is in a speed interval given by a speed curve in the phase separation area;
step S43: when the vehicle-mounted equipment calculates that the train crosses the phase separation area, the output of a main breaker disconnection instruction to the train is stopped, and the pantograph senses the change of the contact network voltage and automatically closes the main breaker to complete phase separation.
7. The method for controlling passing through neutral section of heavy-duty train according to claim 6, wherein said step S42 specifically comprises:
prompting a driver to accelerate or decelerate before a phase separation area according to the speed of the train head and the train tail, enabling the train to run to a position for cutting off traction, and cutting off a main break at a position for cutting off the main break;
when the phase separation zone information is received, if the speed of the tail of the train is lower than the speed of the train passing through the phase separation zone safely, the vehicle-mounted equipment prompts a driver to accelerate through the DMI, and the distance required by the speed acceleration of the tail of the train is taken into consideration of the safe distance of the train, so that the driver can control the running speed of the train integrally and pass through the phase separation zone;
after the train head and the train tail pass through the phase separation area, the vehicle-mounted equipment judges the speed difference between the train head and the train tail to give a speed curve, so that a driver can safely control the train to pass through the phase separation area.
8. The system for the control method of the passing neutral phase of the heavy-duty train of claim 1 is characterized by comprising an on-board host OBS module arranged on the train and a safety train tail module arranged at the tail of the train; the safety train tail module acquires the speed of a train tail and provides the speed for the OBS module, and the OBS module is used for acquiring the position and the speed of a train head of the heavy-duty train and issuing a phase-passing instruction.
9. The system of claim 8, wherein the on-board host OBS module comprises an ATP main control unit, and a speed and distance measuring unit, a wireless transmission unit and a transponder receiving unit which are respectively connected with the ATP main control unit; the speed and distance measuring unit is used for acquiring the speed, the position and the running direction of the train; the responder receiving unit is used for acquiring the passing split-phase information and correcting the speed and distance measuring unit; the wireless transmission unit is used for communicating with RBC ground equipment to obtain the front slope of the heavy-duty train and the allowed driving distance to the ATP main control unit.
10. The system of claim 8, wherein said on-board host OBS module further comprises a DMI display unit for displaying column control information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110894874.6A CN113619649A (en) | 2021-08-05 | 2021-08-05 | Control method and system for passing neutral section of heavy-duty train |
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| CN202110894874.6A CN113619649A (en) | 2021-08-05 | 2021-08-05 | Control method and system for passing neutral section of heavy-duty train |
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| CN114619926A (en) * | 2022-04-01 | 2022-06-14 | 中南大学 | Automatic neutral-section passing control method for heavy-duty locomotive, rail transit vehicle and device |
| CN115285173A (en) * | 2022-06-22 | 2022-11-04 | 卡斯柯信号有限公司 | Method, equipment and medium for realizing train automatic passing neutral section based on CBTC (communication based train control) |
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