Traveling permission calculation method for automatic turn-back and end-change train

Abstract

The invention discloses a running permission calculation method for an automatic turn-back and end-change train, which comprises the following steps that: a radio block center system forms a running permission for controlling the automatic turn-back and end-change operation of the train by receiving train running information such as position and running speed sent by vehicle-mounted equipment and combining with line information such as station type and turn-back line length; the train automatic turn-back and end change operation based on the wireless block center system is realized, the number of devices for realizing functions is reduced, the personnel demand and the workload of related operation are reduced, and the automation degree and the operation efficiency of the operation are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of railway train operation control, and in particular relates to a method for calculating driving permission of an automatic turnaround train. Background Art

[0002] In the existing China Train Control System (CTCS), the train performs a turnaround operation after arriving at the turnaround station, that is, the train's running direction is changed through a specific process. The turnaround operation requires a change of end operation, that is, switching from the current cab to the cab at the other end to continue running. Usually, manual operations are used to achieve train turnaround operations. With the development of unmanned driving technology, it is required that trains can automatically receive and execute end change instructions during the turnaround process while ensuring driving safety. The current automatic turnaround methods include two types: the implementation method based on CTCS-2 and ATO and the automatic turnaround method based on the communication-based train automatic control system (CBTC) used in subways.

[0003] Although there is automatic reversal operation in the CTCS-2 train control system, it usually requires the cooperation of complex and numerous ground equipment such as the train control center, ground transponders and track circuits; although CBTC supports automatic reversal operation, due to the huge differences in the control principles and system composition between CBTC and CTCS systems, the relevant control technology cannot be directly reused. However, the automatic reversal method based on CTCS-3 or the new train control system radio block center system (RBC) is blank. The existing train operation control system usually realizes train reversal and end switching operations through manual operations such as shunting operations. The manual operation method has problems such as complex operation process and long operation time, and also increases the workload of related operators. Summary of the invention

[0004] In view of this, the present invention provides a method for calculating the driving permit of an automatic turnaround train, which realizes the automatic calculation and sending of the driving permit during the automatic turnaround train terminal change process.

[0005] The present invention provides a method for calculating a driving permission of an automatic turnaround train, comprising the following steps:

[0006] Step 1: After receiving the return information packet sent by the on-board equipment at the first end of the train, the radio block center system parses the return information packet to obtain the first end identity information, the first end activation information, the second end identity information and the second end activation information, and calculates the train running status information;

[0007] Step 2: When the radio block center system receives the registration connection of the second-end on-board device, the radio block center system completes the registration connection of the second-end on-board device according to the second-end identity information and the second-end activation information obtained in step 1, and identifies the first-end on-board device and the second-end on-board device as the same train; the radio block center system maintains the communication connection with the first-end on-board device;

[0008] Step 3: The radio block center system checks whether the second-end on-board device can execute the normal registration startup process and whether the second-end identity information is consistent with the information described in the return information package. If it is normal and the description is consistent, the location information of the second-end on-board device is parsed and step 4 is executed; otherwise, it is not processed as a return train and this process ends;

[0009] Step 4: Based on the train operation status information obtained in step 1, the train position of the second-end on-board equipment obtained in step 3, and the automatic return design data, the radio block center system determines in real time whether the train meets the automatic return conditions. If so, the radio block center system immediately performs the head-to-tail screening switch to determine the train integrity status after the head-to-tail screening switch. If the train head screen is set to be normal after the head-to-tail screening switch, step 5 is performed; otherwise, the train head screen is completed with the second end as the main service end. When the train head screen is correct, step 5 is performed. When the train head screen is wrong, the operation status of the second-end on-board equipment is kept unchanged, and step 5 is performed after the subsequent head screen screening process is completed;

[0010] Step 5: When the radio block center system establishes a communication connection with the on-board device at the second end and the head-end and tail-end screening switching is completed, the communication connection with the on-board device at the first end is disconnected, and the radio block center system obtains the current train position report, the current line information and the temporary speed limit information; determines the reference position of the subsequent driving permit according to the current train position report, and calculates the driving permit of the train with the second end as the main service end using the adjusted reference position;

[0011] Step 6: The radio block center system sends a driving permit to the train.

[0012] Furthermore, the train running status information includes the train position, speed and running direction.

[0013] Furthermore, the train operation status information is calculated based on the position report.

[0014] Furthermore, the return information packet is encapsulated in a train-to-ground communication message, which includes a train data information packet, a train position information packet and a return information packet, wherein the return information packet includes an information packet identification code, the number of information packet bits, first end identity information, first end activation information, second end identity information and second end activation information.

[0015] Furthermore, the method of determining the train integrity status after the head-end and tail-end screening switching of the train is: determining according to the head-end and tail-end screening status of the train and the integrity status in the train position report sent by the first end.

[0016] Furthermore, the information of the current line includes the physical section within the station, the block direction of the section, the physical section of the section and the train route within the station.

[0017] Furthermore, the current train position report is obtained by the radio block center system from the second-end onboard equipment.

[0018] Furthermore, the information of the current line is obtained by the radio block center system from the train control and interlocking integrated equipment.

[0019] Furthermore, the temporary speed limit information is acquired by the radio block center system from the temporary speed limit server.

[0020] Beneficial effects:

[0021] The radio block center system in the present invention forms a driving permit for controlling the automatic turnaround and terminal switching operation of the train by receiving the train operation information such as the position and running speed sent by the on-board equipment, combining the line information such as the station type and the length of the return line, thereby realizing the automatic turnaround and terminal switching operation of the train based on the radio block center system, reducing the number of equipment to realize the function, alleviating the personnel requirements and workload of related operations, and improving the automation degree and operation efficiency of the operation. DETAILED DESCRIPTION

[0022] The present invention is described in detail with reference to the following embodiments.

[0023] The present invention provides a method for calculating a driving permit for an automatic turnaround train, which specifically includes the following steps:

[0024] Step 1: When the radio block center system RBC receives the return information packet sent by the on-board device at the first end of the train, the RBC parses the return information packet to obtain the first end identity information, the first end activation information, the second end identity information and the second end activation information, and at the same time calculates the train position, speed, running direction and other train running status information according to the position report sent by the on-board device at the first end, and obtains the train length, train number, maximum allowable speed and other train parameter information in the train automatic return process; wherein the first end is the current service end, and the second end is the current non-service end. The return information packet can be encapsulated in the train-ground communication message, and the train-ground communication message includes a train data information packet, a train position information packet and a return information packet. The train data information packet is shown in Table 1, and the train position information packet includes information such as the train position, running speed, and train mode, as shown in Table 2. The return information packet includes an information packet identification code, information packet bit number, the first end identity information, the first end activation information, the second end identity information and the second end activation information, and the return information packet is shown in Table 3.

[0025] The ID information of the on-board devices at both ends of the train are different, so the present invention realizes double-end identity authentication of the same train by adding the identity information of the first end and the second end in the return information packet.

[0026] Table 1 Train data information package

[0027] Serial number Variable Name Number of digits illustrate 1 NID_PACKET 8 Packet Identification Number 2 L_PACKET 13 Packet Bits 3 NID_OPERATIONAL 32 The train number 4 NC_TRAIN 15 The type of train, used for calculation of static speed curve. 5 L_TRAIN 12 Train length 6 V_MAXTRAIN 7 The maximum permissible speed of the train, taking into account the maximum speed of each vehicle in the train consist 7 M_LOADINGGAUGE 8 Limit curve 8 M_AXLELOAD 7 Axle load 9 M_AIRTIGHT 2 The existence of an airtight system indicates whether the train is equipped with an airtight system 10 N_ITER 5 Contains the number of traction types 11 N_ITER 5 Contains the number of Specialized Transport Module (STM) types 12 NID_STM(k) 8 Available STM types

[0028] Table 2 Train position report information package

[0029]

[0030] Table 3 Return information package (newly added)

[0031] Serial number Variable Name Number of digits illustrate 1 NID_PACKET 8 Packet Identification Code 2 L_PACKET 13 Packet Bits 3 NID_ENGINELOCAL 24 Local identity information 4 S_LOCALACTIVATION 2 Local activation information 5 NID_ENGINEOPPOSITE 24 Peer identity information 6 S_OPPOSITEACTIVATION 2 Peer activation information

[0032] Step 2, when RBC receives the registration connection of the second-end on-board device, it completes the registration connection of the second-end on-board device according to the second-end identity information and the second-end activation information obtained in step 1, and identifies the first-end on-board device that is performing the automatic return operation and the second-end on-board device as the same train to prevent the second-end on-board device from being mistakenly identified as a new train and affecting subsequent train operations; RBC maintains a communication connection with the first-end on-board device.

[0033] Step 3: RBC checks whether the on-board device at the second end can execute the normal registration startup process and whether the identity information of the second end is consistent with the information described in the return information package. If it is normal and the description is consistent, the location information of the on-board device at the second end is parsed and step 4 is executed; otherwise, it is not processed according to the return train.

[0034] Step 4. Based on the train position and running direction of the on-board equipment at the first end obtained in step 1, and the train position of the on-board equipment at the second end obtained in step 3, combined with the automatic return design data of the engineering line, RBC determines in real time whether the train meets the automatic return conditions. If so, RBC immediately executes the head-to-tail screening switch, and determines the train integrity status after the head-to-tail screening switch based on the head-to-tail screening status of the train and the integrity status received in the train position report sent by the first end. If the train head screen is set to normal after the head-to-tail screening switch, execute step 5; otherwise, complete the train head screening with the second end as the main service end. When the train head screen is correct, execute step 5. When the train head screen is wrong, maintain the running status of the on-board equipment at the second end unchanged, and execute step 5 after the subsequent head screening process is completed.

[0035] Among them, the automatic return conditions include: the on-board equipment at the first end and the on-board equipment at the second end of the train are both within the automatic return range; the train has completed the end change preparation, the on-board equipment at the second end has established a connection with the RBC, and the on-board equipment at the first end has sent a return information packet; the on-board equipment at the second end has passed the identity authentication, the on-board equipment at the first end and the on-board equipment at the second end have been identified as the same train, and only one of the driving consoles at the first end and the second end is activated.

[0036] The method of switching between head and tail screening is as follows: if both the head screen and the tail screen of the train are normal, the head and tail screens of the train after the switching between head and tail screening also remain normal, the integrity of the train remains normal, and the calculation of the driving permit is allowed; if the head screen of the train is normal and the tail screen is lost, the head screen of the train after the switching between head and tail screening is lost and the tail screen is set to normal, the integrity of the train is missing, and the head screen screening process needs to be carried out before calculating the driving permit; if the head screen of the train is lost and the tail screen is normal, the head screen of the train after the switching between head and tail screening is set to normal, the tail screen is lost, and the calculation of the driving permit is allowed, and the tail screen screening process needs to be carried out subsequently.

[0037] Step 5. When RBC establishes a communication connection with the on-board device at the second end and completes the head-to-tail screening switching of the train, it disconnects the communication connection with the on-board device at the first end. RBC obtains the train position report from the on-board device at the second end, obtains the information such as the physical section in the station, the blocking direction of the section, the physical section of the section and the train route in the station of the current line from the integrated train control and interlocking equipment TIS, and obtains the temporary speed limit information from the temporary speed limit server TSRS; determines the reference position of the subsequent driving permit based on the current train position report, and uses the adjusted reference position to calculate the driving permit for the train with the on-board device at the second end as the main service end.

[0038] Step 6: RBC sends a driving permit to the train.

[0039] Finally, it should be noted that it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0040] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the method described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0041] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus / method that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus / method.

[0042] So far, further embodiments have been listed to describe the technical solutions of the present invention, but it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0043] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for calculating driving permission of an automatic turnaround train, characterized in that: The following steps are involved: Step 1: After receiving the return information packet sent by the on-board equipment at the first end of the train, the radio block center system parses the return information packet to obtain the first end identity information, the first end activation information, the second end identity information and the second end activation information, and calculates the train running status information; Step 2: When the radio block center system receives the registration connection of the second-end on-board device, the radio block center system completes the registration connection of the second-end on-board device according to the second-end identity information and the second-end activation information obtained in step 1, and identifies the first-end on-board device and the second-end on-board device as the same train; the radio block center system maintains the communication connection with the first-end on-board device; Step 3: The radio block center system checks whether the second-end on-board device can execute the normal registration startup process and whether the second-end identity information is consistent with the information described in the return information package. If it is normal and the description is consistent, the location information of the second-end on-board device is parsed and step 4 is executed; otherwise, it is not processed as a return train and this process ends; Step 4: Based on the train operation status information obtained in step 1, the train position of the second-end on-board equipment obtained in step 3, and the automatic return design data, the radio block center system determines in real time whether the train meets the automatic return conditions. If so, the radio block center system immediately performs the head-to-tail screening switch to determine the train integrity status after the head-to-tail screening switch. If the train head screen is set to be normal after the head-to-tail screening switch, step 5 is performed; otherwise, the train head screen is completed with the second end as the main service end. When the train head screen is correct, step 5 is performed. When the train head screen is wrong, the operation status of the second-end on-board equipment is kept unchanged, and step 5 is performed after the subsequent head screen screening process is completed; Step 5: When the radio block center system establishes a communication connection with the on-board device at the second end and the head-end and tail-end screening switching is completed, the communication connection with the on-board device at the first end is disconnected, and the radio block center system obtains the current train position report, the current line information and the temporary speed limit information; determines the reference position of the subsequent driving permit according to the current train position report, and calculates the driving permit of the train with the second end as the main service end using the adjusted reference position; Step 6: The radio block center system sends a driving permit to the train.

2. The driving permission calculation method according to claim 1, characterized in that: The train running status information includes the train position, speed and running direction.

3. The driving permission calculation method according to claim 1, characterized in that: The train running status information is calculated based on the position report.

4. The driving permission calculation method according to claim 1, characterized in that: The return information packet is encapsulated in the train-to-ground communication message, which includes a train data information packet, a train position information packet and a return information packet, wherein the return information packet includes an information packet identification code, a number of information packet bits, first end identity information, first end activation information, second end identity information and second end activation information.

5. The driving permission calculation method according to claim 1, characterized in that: The method of determining the train integrity status after the head-end and tail-end screening switching of the train is: determining according to the head-end and tail-end screening status of the train and the integrity status in the train position report sent by the first end.

6. The driving permission calculation method according to claim 1, characterized in that: The information of the current line includes the physical section within the station, the block direction of the section, the physical section of the section and the train route within the station.

7. The driving permission calculation method according to claim 1, characterized in that: The current train position report is obtained by the radio block center system from the second-end on-board equipment.

8. The driving permission calculation method according to claim 1, characterized in that: The current line information is obtained by the radio block center system from the train control and interlocking integrated equipment.

9. The driving permission calculation method according to claim 1, characterized in that: The temporary speed limit information is obtained by the radio block center system from the temporary speed limit server.

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