Automatic speed-limited operation method, system and device

Abstract

The present invention belongs to the field of train control. Provided are an automatic speed-limited operation method, system and device. The method comprises: a ground device respectively determining detection areas for an electric multiple unit and a freight train which are about to meet; and on the basis of an overlapping range between the detection area for the electric multiple unit and the detection area for the freight train, the ground device controlling the electric multiple unit to perform temporary speed limiting / normal driving / revocation of speed limiting. In the automatic speed-limited operation method, system and device of the present invention, the system can automatically identify the position where a passenger train and a freight train are about to meet and the related trains, and automatically trigger, in a timely manner, speed-reduced operation of the high-speed passenger train, thereby effectively guaranteeing safe operation of the high-speed passenger train; a safety control technical method is used for implementation, and the existing manual management method is replaced, thus achieving the characteristics of being safer, more reliable and more automatic; and the implementation method in the present invention is realized on the basis of the existing train-ground wireless communication system architecture and is realized only by means of software optimization and adaptation instead of hardware modification, thereby having broad implementability.

Description

Automatic speed limiting operation method, system and device Technical Field

[0001] The present invention belongs to the field of train control, and in particular relates to an automatic speed-limiting operation method, system and equipment. Background Art

[0002] When freight trains are running on high-speed railways, due to the long distance between stations on the high-speed railway line, the high train operation density, and the urgent requirements of freight transportation, there are sometimes scenarios where passenger and freight trains need to intersect and run.

[0003] The existing technical measures for this risk scenario rely on manual management, where the train dispatcher (station attendant) verbally notifies the EMU driver to limit the speed to 160 km / h, and resumes normal operation after the passing is complete. This method first requires manual monitoring and confirmation of the line, station, and trains where the passing scenario will occur. Secondly, the train must wait until it reaches the appropriate location and then manually trigger the notification to the driver to limit the speed. Therefore, this manual identification and triggering management often leads to safety risks caused by negligence.

[0004] Summary of the Invention

[0005] In view of the above problems, the present invention proposes an automatic speed limit operation method, which includes:

[0006] The ground equipment determines the detection areas of the intersecting EMUs and freight trains respectively;

[0007] The ground equipment controls the EMU's temporary speed limit / normal driving / cancellation of speed limit according to the overlapping range of the EMU detection area and the freight car detection area.

[0008] Furthermore, before the ground equipment determines the detection areas of the intersecting EMUs and freight cars respectively, it also includes:

[0009] The route topology within the jurisdiction of the region is divided, and the routes in the region that can meet high-speed passenger and freight operations are assigned and configured;

[0010] The area includes the station area and the section area.

[0011] Furthermore, the ground equipment determines that the train / truck detection area includes:

[0012] The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area;

[0013] The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel;

[0014] The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

[0015] Furthermore, the ground equipment controls the EMU to temporarily limit speed / run normally / cancel speed limit, including:

[0016] When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation;

[0017] When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state;

[0018] If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

[0019] Furthermore, if the truck loses communication with the ground equipment, the truck detection area is indicated as a possible occupied inspection area for non-communication vehicles.

[0020] The present invention also provides an automatic speed-limiting operation system, which includes ground equipment,

[0021] Ground equipment for separately determining the detection areas of intersecting EMUs and freight trains;

[0022] The ground equipment is also used to control the EMU's temporary speed limit / normal driving / cancellation of speed limit based on the overlapping range of the EMU detection area and the freight car detection area.

[0023] Furthermore, the ground equipment is also used to divide the line topology within the jurisdiction before determining the detection area for the intersecting EMUs and freight trains, and to assign and configure the lines in the area that can intersect high-speed passenger and freight trains;

[0024] The area includes the station area and the section area.

[0025] Furthermore, the ground equipment used to determine the train / truck detection area includes:

[0026] The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area;

[0027] The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel;

[0028] The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

[0029] Furthermore, the ground equipment used to control the EMU's temporary speed limit / normal running / cancellation of speed limit includes:

[0030] When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation;

[0031] When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state;

[0032] If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

[0033] The present invention also provides an automatic speed limit operation device, the device comprising at least one processor and at least one memory, the memory being electrically connected to the processor, wherein:

[0034] The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform any one of the above methods.

[0035] The automatic speed limit operation method, system and equipment of the present invention can automatically identify the location where passenger and freight crossing operations occur and the relevant trains, and automatically trigger the high-speed passenger train to slow down in a timely manner, effectively ensuring the safe operation of high-speed passenger trains. It adopts safety control technical methods to replace existing manual management methods, and has the characteristics of being safer, more reliable and more automated. The implementation method of the present invention is based on the existing vehicle-to-ground wireless communication system architecture, and only needs to be implemented through software optimization and adaptation, without modifying the hardware, and is widely easy to implement.

[0036] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] FIG1 is a schematic diagram showing a scenario where an EMU and a freight train meet in an embodiment of the present invention;

[0039] FIG2 shows a schematic flow chart of an automatic speed limiting operation method according to an embodiment of the present invention;

[0040] FIG3 shows a schematic diagram of line topology area division in an embodiment of the present invention;

[0041] FIG4 is a schematic diagram showing the scope of the intersection detection area confirmed in an embodiment of the present invention;

[0042] FIG5 is a schematic diagram showing the intersection and overlap of an EMU and a freight train in an embodiment of the present invention;

[0043] FIG6 shows a schematic diagram of a truck communication interruption detection area in an embodiment of the present invention;

[0044] FIG7 shows a schematic structural diagram of an automatic speed limiting operation system in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0046] The present invention provides an automatic speed limit operation method and system, which are mainly used to provide a method for ensuring the safe operation of trains in a high-speed train mixed passenger and freight crossing scenario. Figure 1 shows a schematic diagram of the crossing scenario of an EMU and a freight train in an embodiment of the present invention. In Figure 1, the EMU and the freight train run on two lines respectively, and the EMU and the freight train run relative to each other.

[0047] The present invention provides an automatic speed limit operation method. Figure 2 shows a schematic flow chart of the automatic speed limit operation method in an embodiment of the present invention. In Figure 2, the method includes: ground equipment separately determines the detection areas of the intersecting EMUs and freight cars; the ground equipment controls the EMU to temporarily limit speed / run normally / cancel speed limit according to the overlapping range of the EMU detection area and the freight car detection area.

[0048] Specifically, before the ground equipment determines the detection areas for the intersecting EMUs and freight trains respectively, it also includes: dividing the line topology within the jurisdiction of the area, and assigning and configuring the lines in the area that can intersect passengers and freight at high speed; wherein, the area includes the station and the section.

[0049] Specifically, the ground equipment determines the EMU / freight car detection area including:

[0050] The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area;

[0051] The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel;

[0052] The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

[0053] Specifically, the ground equipment controls the EMU's temporary speed limit / normal operation / cancellation of speed limit include:

[0054] When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation;

[0055] When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state;

[0056] If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

[0057] Specifically, if the truck loses communication with the ground equipment, the truck detection area is indicated as a possible occupied inspection area for non-communication vehicles.

[0058] The embodiments of the present invention also illustrate a method and system for realizing automatic speed limit operation applicable to mixed passenger and freight transportation based on equipment through specific examples:

[0059] The system architecture of the present invention requires that both EMUs and freight cars be equipped with onboard train control equipment (hereinafter referred to as ATP), which operates safely by obtaining driving permit conditions calculated by ground equipment (hereinafter referred to as RBC). Therefore, a vehicle-ground system control architecture based on wireless communication is a fundamental requirement for the implementation of the present invention. In the embodiments of the present invention, the specific process of the automatic speed limit operation method is described in detail:

[0060] Step 1: Before departure, the onboard ATP device will register with the RBC and provide the RBC with the current train type, including EMU, locomotive-drawn freight car, locomotive-drawn passenger car, etc. It will then report the train position to the RBC in real time, that is, the distance it has traveled based on a certain balise;

[0061] Step 2, RBC divides the line topology within its jurisdiction into two parts, namely, the station interior and the interval, and assigns and configures the lines in the area that can intersect and run at high speed for passenger and freight. Figure 3 shows a schematic diagram of the line topology area division in an embodiment of the present invention. In Figure 3, the ground equipment divides the line topology within its jurisdiction into areas 1, 2, and 3. Areas 1 and 3 are the station interior parts, and area 2 is the interval part. The EMU is located on line 1 and the freight car is located on line 2. In the embodiment of the present invention, line 1 and line 2 in area 2 can intersect and run. During operation, the on-board equipment ATP reports the real-time position of the train to the ground equipment RBC. RBC matches the above-mentioned line topology area with the reference transponder based on the real-time position report of the train, confirms the area number, line number, specific position and direction of travel of the current train, and calculates the permitted driving length (MA) of the train according to the existing rules. In the embodiment of the present invention, the permitted driving length of the EMU is represented by MA1, and the permitted driving length of the freight car is represented by MA2.

[0062] Step 3: Determine the length of the detection area for the EMU and freight train. FIG4 shows a schematic diagram of confirming the intersection detection area range in an embodiment of the present invention. FIG4 takes the EMU as an example. The EMU runs on line 1. The RBC extends the range from the starting point of the train head to the MA end point by 3 km (as a compensation error for the unequal lengths of different adjacent lines) and allocates it to the train as the intersection detection area. In the embodiment of the present invention, the detection area is used to indicate the area within which the current train can move forward, so as to facilitate the detection of whether there is any common overlapping area between the two intersecting trains.

[0063] In the embodiment of the present invention, the extension distance is determined by the maximum interval length, deviation and reserved margin, which is used for safety margin such as system response confirmation. In the embodiment of the present invention, the extension distance can be set to 1 to 3 km.

[0064] Step 4: The EMU and the freight train pass each other and automatically limit their speed. FIG5 shows a schematic diagram of the overlapping of the EMU and the freight train in an embodiment of the present invention. In FIG5 , the EMU train is located on line 1 and the freight train is located on line 2. In the embodiment of the present invention, in order to more clearly illustrate the passing of the EMU and the freight train, only the EMU detection area and the freight train detection area are shown in the figure for description. The passing of the EMU and the freight train is divided into four scenarios: A, B, C, and D.

[0065] In an embodiment of the present invention, the four scenarios are specifically described. Scenario A: RBC detects that the EMU detection area does not overlap with the freight car detection area, and at this time controls the EMU and freight car trains to operate normally; Scenario B: RBC detects that the EMU detection area overlaps with the front part of the freight car detection area (there is an overlapping part), and automatically issues a temporary speed limit command within the entire MA range to the EMU, and marks the train as a speed-limited operation state; Scenario C: RBC detects that the EMU detection area overlaps with the rear part of the freight car detection area (there is an overlapping part), and continues to issue a temporary speed limit command within the entire MA range to the EMU, and marks the train as a speed-limited operation state; Scenario D: RBC detects that the EMU detection area does not overlap with the freight car detection area, and then RBC detects whether the EMU is marked as a speed-limited operation state. If the EMU is marked as a speed-limited operation state, it automatically issues a command to revoke the temporary speed limit within the entire MA range to the EMU. If the speed-limited operation state is not marked, the EMU is controlled to operate normally;

[0066] In the embodiment of the present invention, the temporary speed limit command is set to 160 km / h. This speed limit value is only an example. The specific speed limit data RBC can be determined according to the train type, location, etc.

[0067] In the embodiment of the present invention, the speed-limited operation mode when the communication between the EMU and the freight car and the RBC is interrupted is also explained. If the communication between the EMU and the RBC is interrupted, the EMU train will automatically reduce the speed because it cannot obtain the RBC driving permit; if the communication between the freight car and the RBC is interrupted, the RBC should redefine the freight car detection area as a possible occupied inspection area for non-communication vehicles, so that overlapping detection can continue to be performed as required in step 4, triggering the EMU to move forward in a safe speed-limited operation mode. Figure 6 shows a schematic diagram of the freight car communication interruption detection area in an embodiment of the present invention. In Figure 6, the freight car is running in line 1, and train occupancy inspection devices are set in fixed sections along the trackside of the railway line. In the embodiment of the present invention, for trains without communication, these trackside occupancy inspection devices can be used to confirm the section position of the train. It should be noted that at this time, the detection area range of the non-communication vehicle is reduced to the front MA range and only includes the occupied section.

[0068] The present invention also provides an automatic speed limit operation system. FIG7 shows a schematic structural diagram of the automatic speed limit operation system in an embodiment of the present invention. In FIG7 , the system includes ground equipment and train control onboard equipment.

[0069] Ground equipment for separately determining the detection areas of intersecting EMUs and freight trains;

[0070] The ground equipment is also used to control the EMU's temporary speed limit / normal driving / cancellation of speed limit based on the overlapping range of the EMU detection area and the freight car detection area;

[0071] The train control onboard equipment is used to provide the current train type to the ground equipment, report the train position, and obtain the driving permission conditions calculated by the ground equipment for safe operation.

[0072] Specifically, the ground equipment is also used to divide the line topology within the jurisdiction before determining the detection area for the intersecting EMUs and freight trains, and to assign and configure the lines in the area that can intersect passengers and freight at high speed; wherein the area includes the station area and the interval.

[0073] Specifically, the ground equipment used to determine the EMU / freight car detection area includes:

[0074] The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area;

[0075] The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel;

[0076] The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

[0077] Specifically, the ground equipment used to control the EMU's temporary speed limit / normal operation / cancellation of speed limit includes:

[0078] When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation;

[0079] When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state;

[0080] If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

[0081] The automatic speed limit operation method, system and equipment of the present invention can automatically identify the location where passenger and freight crossing operations occur and the relevant trains, and automatically trigger the high-speed passenger train to slow down in a timely manner, effectively ensuring the safe operation of high-speed passenger trains. It adopts safety control technical methods to replace existing manual management methods, and has the characteristics of being safer, more reliable and more automated. The implementation method of the present invention is based on the existing vehicle-to-ground wireless communication system architecture, and only needs to be implemented through software optimization and adaptation, without modifying the hardware, and is widely easy to implement.

[0082] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic speed limit operation method, characterized in that: The method comprises: The ground equipment determines the detection areas of the intersecting EMUs and freight trains respectively; The ground equipment controls the EMU's temporary speed limit / normal driving / cancellation of speed limit according to the overlapping range of the EMU detection area and the freight car detection area.

2. The automatic speed limiting operation method according to claim 1, characterized in that: Before the ground equipment determines the detection areas of the intersecting EMUs and freight cars, it also includes: The route topology within the jurisdiction of the region is divided, and the routes in the region that can meet high-speed passenger and freight operations are assigned and configured; The area includes the station and the section.

3. The automatic speed limiting operation method according to claim 2, characterized in that: The ground equipment determines the EMU / freight car detection area including: The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area; The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel; The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

4. The automatic speed limiting operation method according to any one of claims 1 to 3, characterized in that: Ground equipment controls the EMU's temporary speed limit / normal operation / speed limit cancellation, including: When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation; When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state; If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

5. The automatic speed limiting operation method according to claim 1 or 2, characterized in that: If the truck loses communication with the ground equipment, the truck detection area is indicated as a possible occupied inspection area for non-communication vehicles.

6. An automatic speed limit operation system, characterized in that: The system includes ground equipment, Ground equipment for separately determining the detection areas of intersecting EMUs and freight trains; The ground equipment is also used to control the EMU's temporary speed limit / normal driving / cancellation of speed limit based on the overlapping range of the EMU detection area and the freight car detection area.

7. The automatic speed limiting operation system according to claim 6, characterized in that: The ground equipment is also used to divide the line topology within the jurisdiction before determining the detection area for intersecting EMUs and freight trains, and to assign and configure the lines in the area that can run at high speeds for passenger and freight intersecting. The area includes the station area and the section area.

8. The automatic speed limiting operation system according to claim 7, characterized in that: Ground equipment used to determine the EMU / truck detection area includes: The ground equipment determines the current train area number, line number, location and travel direction based on the train's real-time location and the matching line topology area; The ground equipment determines the permitted running length of the train based on the current train area number, line number, location and direction of travel; The ground equipment determines the intersection detection area according to the driving permission length and the extended distance.

9. The automatic speed limiting operation system according to any one of claims 6 to 8, characterized in that: Ground equipment used to control the EMU's temporary speed limit / normal operation / cancellation of speed limit includes: When the ground equipment detects that the EMU detection area overlaps with the truck detection area, it automatically issues a temporary speed limit command to the EMU and marks the EMU as speed-limited operation; When the ground equipment detects that the EMU detection area and the freight car detection area do not overlap, it determines whether the EMU is marked as a speed-limited running state; If the EMU is marked as in the speed limit operation state, a command to cancel the temporary speed limit will be sent to the EMU; if the EMU is not marked as in the speed limit operation state, the EMU will be controlled to run normally.

10. An automatic speed limiting operation device, characterized in that: The device includes at least one processor and at least one memory, wherein the memory is electrically connected to the processor, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 5.

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