CN116161088A - Method and system for determining train position - Google Patents

Abstract

The present invention belongs to the field of train control, and provides a method and system for determining the position of a train, including: acquiring train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section; according to the train information, The virtual section number and the train estimate the distance from the front end to the virtual section to calculate the train-associated block partition location list, the start position and the end location of each block partition; according to the train-related block partition location list and the CTC station The equipment displays the coordinates, and determines the coordinate points of the train start position and the train end position. It can realize the display of the number of trains in the blocked area and the positional relationship between the trains, improve the high-precision display of the train position, and realize the normal display on the station map interface, which is convenient and intuitive.

Description

Method and system for determining train position

technical field

The invention belongs to the field of train control, in particular to a method and system for determining a train position.

Background technique

The occupancy of the section track by the railway signal system is based on the track circuit. In the automatic block section, the section is divided into several block partitions, which is the smallest unit for the section track occupancy inspection. CTC (centralized traffic control system, dispatching centralized control system) receives the occupancy status of the blocked area. When the blocked area is idle, that is, when there is no vehicle in the blocked area, it will be displayed as a light blue line segment on the station map; when the blocked area is occupied, that is, blocked When there is a car in the zone, it will be displayed as a red line segment on the station map. When the train is running in the section, the CTC (centralized traffic control system, dispatching centralized control system) station map shows that the red line moves. Based on this, the train number tracking and the automatic control of the station route are realized.

Under the condition of fixed blockage, the occupancy of the block area based on the track circuit and the location of the trains T1, T2, and T3 in the station map of the CTC (centralized traffic control system) are shown in Figure 1. In the schematic diagram, a rectangle The grid indicates a blocked area, the white rectangular grid indicates that the blocked area is free and has no cars, and the black rectangular grid indicates that the blocked area is occupied by a car. At this time, the number of occupied trains is marked near the blocked area, the same below. At this time, the occupancy state of the block area can roughly reflect the position of the train, but it cannot accurately represent the position and length of the train inside the block area.

Under the condition of moving block, there may be 1 train or 2 trains in a block area. As shown in Figure 2, train T4 occupies one block area, and trains T5 and T6 jointly occupy another block area. At this time, the occupancy state of the block zone cannot represent the number of trains inside the block zone and the positional relationship between the trains. However, there are still the following technical problems at present: the number of trains in the block area and the positional relationship between the trains cannot be displayed, and the display is not fine and intuitive enough.

Contents of the invention

In view of the above problems, the present invention proposes a method and system for determining the position of a train, which can realize the display of the number of trains in the blocked area and the positional relationship between the trains, improve the high-precision display of the train position, and realize the normalized display on the station map interface , convenient and intuitive.

The present invention provides a method for determining a train position, comprising:

Obtain train information, the number of the virtual section where the train estimation front end is located, and the distance from the train estimation front end to the virtual section;

Calculating a block location list associated with the train, a start position and an end position of each block partition according to the train information, the virtual section number, and the distance from the estimated front end of the train to the virtual section;

According to the block location list associated with the train and the dispatching centralized control CTC station equipment display coordinates, determine the train start position coordinate point and the train end position coordinate point.

Preferably, the train information includes: train length and train running direction.

Preferably, the calculating the train-associated blocked partition position list includes: determining the blocked partition corresponding to the number of the virtual section where the estimated front end of the train is located as the current blocked partition;

Obtain the length of the current block section, when the distance from the estimated front end of the train to the virtual section in front is summed with the train length to obtain a first sum value, if the first sum value is greater than the length of the current block section, the current block section Partitions are added to the list of train-associated occluded partitions.

Preferably, the method further includes: dividing the distance from the estimated front end of the train to the virtual section in front by the length of the current block section to obtain a ratio result, the ratio result is the position of the train in the current block section, if the ratio result is 1, the position The calculation is over.

Preferably, the first sum is subtracted from the length of the current block area to obtain a first difference, and the first difference is the remaining length of the train outside the current block area.

Preferably, the remaining train length is greater than the length of the current blocked area, and the current blocked area is added to the train-associated blocked area list, with a start position of 0 and an end position of 1.

Preferably, if the remaining vehicle length is less than or equal to the length of the current blocked area, the current blocked area is added to the list of train-related blocked areas, the starting position is 0, and the ending position is the distance between the remaining vehicle length and the current blocked area. The ratio of partition lengths.

Preferably, the running direction of the train is forward running, and the rear blocked partition of the current blocked partition is searched;

The running direction of the train is not running in the positive direction, and the front blocked partition of the current blocked partition is searched and recorded as the next blocked partition;

If the next blocked area does not exist, then reset the current blocked area as the next blocked area.

Preferably, the running direction of the train is the opposite direction, the reset start position is 1 minus the original end position, and the reset end position is 1 minus the original start position.

Preferably, the current block partition is added to the list of train-related block partitions, the starting position is the ratio of the distance between the estimated front end of the train to the front virtual section divided by the length of the current block partition, and the end position is the first sum divided by the length of the current block partition ratio.

Preferably, the central control of the CTC station equipment display coordinates according to the block location list associated with the train and the dispatching centralized control to determine the coordinate point of the train start position and the coordinate point of the end position of the train includes: Whether the start position and end position of the train change, and if there is a change, calculate the block partition length, train start offset and end offset, and train start and end position coordinates.

Preferably, the block partition length is the distance from the beginning to the terminal coordinate point; the train start position offset is obtained by multiplying the block partition length by the train start position; the train end position offset is obtained by multiplying the train end position by the block partition length;

The coordinate point of the train start position is obtained according to the sum of the offset of the start end of the block partition and the train start position; the coordinate point of the end position of the train is obtained according to the sum of the offset of the start end of the block partition and the end position of the train.

Based on the same inventive concept, the present invention provides a train position determination system, comprising:

An acquisition module, configured to acquire train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section;

Calculation module, used to calculate the train-associated block partition position list, the start position and end position of each block partition according to the train information, the virtual section number and the distance from the estimated front end of the train to the virtual section;

The determination module is used to determine the train start position coordinate point and the train end position coordinate point according to the block location list associated with the train and the scheduling centralized control CTC station equipment display coordinates.

Based on the same inventive concept, the present invention also provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;

memory for storing computer programs;

The processor is used to implement the steps of any one of the methods for determining the train position when executing the program stored in the memory.

Based on the same inventive concept, the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the methods for determining a train position are realized.

The above-mentioned one or at least one technical solution in the embodiment of the present application has at least the following technical effects:

Based on the above technical solution, obtain the train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section; Calculate the position list of the blocked area associated with the train, the start position and the end position of each blocked area; according to the list of blocked area positions associated with the train and the display coordinates of the CTC (centralized traffic control system, dispatching centralized control system) station equipment, Determine the train start position coordinate point and the train end position coordinate point. It can realize the display of the number of trains in the blocked area and the positional relationship between the trains, improve the high-precision display of the train position, and realize the normal display on the station map interface, which is convenient and intuitive.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure pointed out in the written description as well as the appended drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Figure 1 shows a schematic diagram of the display of the station yard under the fixed blockage condition;

Figure 2 shows a schematic diagram of the display of the station yard under the moving block condition;

Fig. 3 shows a schematic flow chart of the display method of the present invention;

Fig. 4 shows a schematic flow chart of the display system of the present invention;

Fig. 5 shows a schematic diagram of part of the work of the CTC (centralized traffic control system) system of the present invention;

Fig. 6 shows the train in the present invention and is located in the schematic diagram of the blocking zone;

Fig. 7 shows the train in the present invention and is located in the schematic diagram of two blocking partitions;

Fig. 8 shows a schematic diagram of two trains located in a block zone in the present invention.

Detailed ways

In order to make the purpose, 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 It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first" and "second" in this application are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the application described herein. In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientations or positional relationships indicated by "vertical", "horizontal", "horizontal", and "longitudinal" are based on the orientations or positional relationships shown in the drawings.

The application scenario of the present invention can be that in the case of a CTCS-3 train control system or other non-new train control systems, the train information received by the CTC (centralized traffic control system, dispatching centralized control system) from the ground control center RBC can be Instead of the train information in this scheme, it is used to calculate the train position. In the case of a train wireless train number verification information transmission system, CTC (centralized traffic control system, centralized dispatching control system) can obtain the mileage mark and length meter information from the wireless train number, combined with the CTC (centralized traffic control system, centralized dispatching Control system) The system's own judgment on the direction of train running can replace the train information in this scheme and be used to calculate the train position. With the high-speed railway temporary speed limit server TSRS equipment ATO function, CTC (centralized traffic control system, dispatching centralized control system) can obtain train location (mileage information) information from the vehicle status information received by the temporary speed limit server TSRS , the length of the train can be calculated by obtaining the type of train formation, combined with the judgment of the CTC (centralized traffic control system) system itself on the direction of the train, it can replace the train information in this scheme to calculate the train position. In the CTC (centralized traffic control system, dispatching centralized control system) station equipment data, the length of the block zone is calculated using the signal machine, signal board or other equipment at both ends of the block zone to calculate the length of the block zone, which can replace the length of the block zone in this scheme.

With reference to Fig. 3, a kind of method for determining the position of a train, comprising: obtaining train information, the number of the virtual section where the train estimation front-end is located and the distance from the train estimation front-end to the virtual section;

Calculating a block location list associated with the train, a start position and an end position of each block partition according to the train information, the virtual section number, and the distance from the estimated front end of the train to the virtual section;

According to the block location list associated with the train and the CTC (centralized traffic control system, dispatching centralized control system) station equipment display coordinates, determine the train start position coordinate point and the train end position coordinate point.

Wherein, the train information includes but not limited to: train length and train running direction.

Specifically, the present invention aims at displaying the train position, train direction, and train length of the new type of train in tabular form, without combining with the display state of the block partition, and providing a more accurate determination of the train position through train information and calculation methods. The invention is applied to the CTC (centralized traffic control system, dispatching centralized control system) system platform, and the hardware devices involved in the system can be desktop computers, notebook computers, tablet computers and central control displays. The present invention is mainly based on the CTC (centralized traffic control system, dispatching centralized control system) system by obtaining the train information of the ground control center RBC and the number of the virtual section where the train estimation front end is located and the distance from the train estimation front end to the virtual section, wherein , the train estimation front end can be understood as the train head in the physical train, and the virtual section is to divide the train running line into multiple sections, and number the multiple sections respectively, so as to obtain the train position.

Specifically, the calculation of the train-associated block partition location list includes: searching for the block partition corresponding to the number of the virtual section where the train estimation front end is located in the CTC (centralized traffic control system, dispatching centralized control system) station equipment data, and calculating the train estimation The blocked subregion corresponding to the virtual section number where the front end is located is determined as the current blocked subregion; the length of the current blocked subregion is obtained, and when the train estimates the distance from the front end to the front virtual section and the sum of the train length to obtain the first sum value, if the The first sum value is greater than the length of the current blocked partition, and the current blocked partition is added to the train-associated blocked partition list. Wherein, it should be noted that the block location list associated with the train is used to compare the start position and end position of each block block, and convert the start position and end position into coordinates to realize the determination of the train position. If the current block zone does not exist, the train is not running in the forward direction or the reverse direction, the length of the current block zone is zero, or the length of the current block zone is less than the distance between the estimated front end of the train and the virtual section in front, the train position calculation fails.

In some optional embodiments, the method further includes: obtaining the distance from the estimated front end of the train to the virtual section in front and the length of the current blocked section;

Divide the estimated distance from the front end of the train to the virtual section in front by the length of the current block zone to obtain a ratio result, the ratio result is the position of the train in the current block zone, if the ratio result is 1, the position calculation ends.

In some optional implementations, the first sum is subtracted from the length of the current block area to obtain a first difference, and the first difference is the remaining length of the train outside the current block area. If the remaining train length is less than or equal to the length of the current blocked partition, add the current blocked partition to the list of train-related blocked partitions, the start position is 0, and the end position is the distance between the remaining train length and the length of the current blocked partition ratio.

The remaining vehicle length is greater than the length of the current blocked area, and the current blocked area is added to the list of train-related blocked areas, with a start position of 0 and an end position of 1.

In some optional embodiments, the running direction of the train is forward running, and the rear blocked partition of the current blocked partition is searched;

The running direction of the train is not running in the positive direction, and the front blocked partition of the current blocked partition is searched and recorded as the next blocked partition;

If the next block zone does not exist, then reset the current block zone as the next block zone; if the length of the current block zone is 0, then the train position calculation is judged as failure.

In some optional embodiments, the running direction of the train is the opposite direction, the reset start position is 1 minus the end position, and the reset end position is 1 minus the start position. Reset the remaining vehicle length to the original remaining vehicle length minus the length of the current block partition.

In some optional embodiments, the current block partition is added to the list of train-related block partitions, the starting position is the ratio of the distance between the estimated front end of the train and the virtual section in front divided by the length of the current block partition, and the end position is the first sum value The ratio divided by the length of the current occlusion partition.

In some optional embodiments, the train start position coordinate point and the train end position are determined according to the block location list associated with the train and the CTC (centralized traffic control system, dispatching centralized control system) station equipment display coordinates Coordinate points; including: judging whether the start position and end position in the train-associated block partition list change, and if there is a change, calculate the block partition length, train start offset and end offset, and train start and end positions Coordinate points.

In some optional embodiments, the block partition length is the distance from the start end to the terminal coordinate point; the train start position offset is obtained by multiplying the block partition length by the train start position; the train end is obtained by multiplying the block partition length by the train end position position offset;

The coordinate point of the train start position is obtained according to the sum of the offset of the start end of the block partition and the train start position; the coordinate point of the end position of the train is obtained according to the sum of the offset of the start end of the block partition and the end position of the train.

In terms of train position accuracy in the CTC (centralized traffic control system, dispatching centralized control system), the present invention breaks through the limitation of the smallest unit for occupancy checks in the block area of the track circuit, and realizes the train position with meter-level precision; for the first time, the RBC system of the ground control center The transmitted train status information such as train position, train direction and train length is used for the calculation and display of train position in the station map of CTC (centralized traffic control system). In the process of train position calculation and display, full use of CTC ( Centralized traffic control system (dispatching centralized control system) basic data such as the connection relationship between the front and rear of the existing block zone, the length of the block zone, and the coordinates of the block zone; In this scheme, green is used to indicate the position of the train in the block zone.

Based on the same inventive concept, the present invention also provides a train position determination system, see Figure 4, including:

An acquisition module, configured to acquire train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section;

Calculation module, used to calculate the train-associated block partition position list, the start position and end position of each block partition according to the train information, the virtual section number and the distance from the estimated front end of the train to the virtual section;

The determination module is configured to determine the train start position coordinate point and the train end position coordinate point according to the block location list associated with the train and the CTC (centralized traffic control system, dispatching centralized control system) station equipment display coordinates.

Specifically, load the display coordinates of CTC (centralized traffic control system, dispatching centralized control system) station equipment from the data, including the coordinates of the beginning and end of the block zone; receive the list of train-related block zones from the RBC management module of the ground control center, including The start and end positions of each occlusion partition. Referring to Fig. 6, a rectangular grid in the figure represents a blocked area, a white rectangular grid indicates that the blocked area is free and has no vehicles, a black rectangular grid indicates that the blocked area is occupied by a car, and the shaded part indicates the position of a new train control train, and the train T7 is in a Running in the blocked section, the train running direction is the positive direction; the running section length is greater than the train length, Figure 7 shows that the train T8 runs across two blocked sections, and the running direction is the positive direction; Figure 8 shows that the trains T9 and T10 run in the same blocked section.

Referring to Fig. 5 , part of the working process of the CTC (centralized traffic control system, dispatching centralized control system) system of the present invention is: the RBC interface of the ground control center is responsible for communicating with the ground control center RBC in the CTC (centralized traffic control system, dispatching centralized control system) system. The communication module obtains the train information of the RBC system of the ground control center through the RBC interface of the ground control center. The train information includes the length of the train, the running direction of the train, the number of the virtual section where the front end of the train is estimated, and the distance between the estimated front end and the virtual section ahead. distance; and send the obtained train information to the RBC management module of the ground control center. The RBC management of the ground control center is the module responsible for the train position calculation in the CTC (centralized traffic control system) system. The interface receives train information, combined with CTC (centralized traffic control system, dispatching centralized control system) station equipment and connection relationship, calculates the block location list associated with the train, including the start position and end position of each block partition, and sends it to the control display module. The control and display module is the module responsible for the display of the station map in the CTC (centralized traffic control system) system. It receives the block location list associated with the train from the RBC management of the ground control center, combined with the CTC (centralized traffic control system, centralized control of dispatching) System) The station equipment displays coordinates, calculates the train start position coordinate point and the train end position coordinate point, and displays the new train control train position line segment from the train start position coordinate point to the train end position coordinate point. The position of the new train control train is displayed, that is, the line segment from the coordinate point of the train start position to the coordinate point of the train end position; on the station yard map, a green line is used to connect the coordinate point of the train start position and the coordinate point of the train end position.

Based on the same inventive concept, the present invention also provides an electronic device, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;

memory for storing computer programs;

The processor is used to implement any step in a method for determining the position of a train when executing the program stored in the memory.

Based on the same inventive concept, the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, any step in a method for determining a train position is implemented.

The above-mentioned one or at least one technical solution in the embodiment of the present application has at least the following technical effects:

Based on the above technical solution, obtain the train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section; Calculate the position list of the blocked area associated with the train, the start position and the end position of each blocked area; according to the list of blocked area positions associated with the train and the display coordinates of the CTC (centralized traffic control system, dispatching centralized control system) station equipment, Determine the train start position coordinate point and the train end position coordinate point. It can realize the display of the number of trains in the blocked area and the positional relationship between the trains, improve the high-precision display of the train position, and realize the normal display on the station map interface, which is convenient and intuitive.

When the train is running in the section, compared with the occupancy status of the block partition as the smallest unit, it can more precisely indicate the position of the train in the block partition; in the mobile block mode, when a block partition enters multiple trains, the system clearly and clearly displays The number and position relationship of trains in the block area; the new train control train position, train direction, and train length information, compared with the temporarily transferred train status table, realizes its normal display on the station map interface, which is convenient and intuitive; CTC (centralized traffic control system, dispatching centralized control system) system station map interface train position display pay attention to each train's own head position display coordinate point, rear position display coordinate point, with the help of the original block zone mileage mark and screen display coordinates in the system , realizing the conversion from the line kilometer mark to the screen coordinate point.

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 perform equivalent replacements for some of the technical features; and these The modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (15)

1. A method for determining a train position, comprising: Obtain train information, the number of the virtual section where the train estimation front end is located, and the distance from the train estimation front end to the virtual section; Calculating a block location list associated with the train, a start position and an end position of each block partition according to the train information, the virtual section number, and the distance from the estimated front end of the train to the virtual section; According to the block location list associated with the train and the dispatching centralized control CTC station equipment display coordinates, determine the train start position coordinate point and the train end position coordinate point. 2. The method according to claim 1, wherein the train information comprises: train length and train running direction. 3. The method according to claim 1, wherein the calculating the block location list associated with the train comprises: determining the block corresponding to the virtual section number where the estimated front end of the train is located as the current block; Obtain the length of the current block section, when the distance from the estimated front end of the train to the virtual section in front is summed with the train length to obtain a first sum value, if the first sum value is greater than the length of the current block section, the current block section Partitions are added to the list of train-associated occluded partitions. 4. method according to claim 1 or 3, is characterized in that, described method also comprises: Divide the estimated distance from the front end of the train to the front virtual section by the length of the current block zone to obtain a ratio result, the ratio result is the position of the train in the current block zone, if the ratio result is 1, the position calculation ends. 5. The method according to claim 4, characterized in that, the difference between the first sum and the length of the current block area is obtained to obtain a first difference, and the first difference is the remaining number of trains outside the current block area. Car length. 6. The method according to claim 5, wherein the remaining vehicle length is greater than the length of the current block zone, the current block zone is added to the list of train-related block zones, the starting position is 0, and the end position is 1. 7. The method according to claim 5, wherein if the remaining train length is less than or equal to the length of the current blocked area, the current blocked area is added to the train-related blocked area list, and the starting position is 0 , the end position is the ratio of the remaining vehicle length to the length of the current block section. 8. The method according to claim 2, characterized in that, the train running direction is forward running, and the rear blocked partition of the current blocked partition is searched; The running direction of the train is not running in the positive direction, and the front blocked partition of the current blocked partition is searched and recorded as the next blocked partition; If the next blocked area does not exist, then reset the current blocked area as the next blocked area. 9. The method according to claim 2, wherein the running direction of the train is running in the opposite direction, the reset start position is 1 minus the original end position, and the reset end position is 1 minus the original start position. 10. The method according to claim 1, wherein the current block partition is added to the list of train-related block partitions, the starting position is the ratio of the distance between the estimated front end of the train to the front virtual section divided by the length of the current block partition, and the end The position is the ratio of the first sum divided by the length of the current occlusion partition. 11. The method according to claim 1, characterized in that, according to the block location list associated with the train and the scheduling centralized control CTC station equipment display coordinates, determine the train start position coordinate point and the train end position coordinate point , comprising: judging whether the start position and end position in the train-associated block partition list have changed, and if there is a change, calculating the block partition length, the train start offset and the end offset, and the train start and end position coordinates . 12. The method according to claim 11, characterized in that, the block partition length is the distance from the beginning to the terminal coordinate point; multiplied by the train start position according to the block partition length to obtain the train start position offset; multiplied by the block partition length The train end position gets the train end position offset; The coordinate point of the train start position is obtained according to the sum of the offset of the start end of the block partition and the train start position; the coordinate point of the end position of the train is obtained according to the sum of the offset of the start end of the block partition and the end position of the train. 13. A train position determination system, comprising: An acquisition module, configured to acquire train information, the number of the virtual section where the train estimation front-end is located, and the distance from the train estimation front-end to the virtual section; Calculation module, used to calculate the train-associated block partition position list, the start position and end position of each block partition according to the train information, the virtual section number and the distance from the estimated front end of the train to the virtual section; The determination module is used to determine the train start position coordinate point and the train end position coordinate point according to the block location list associated with the train and the scheduling centralized control CTC station equipment display coordinates. 14. An electronic device, characterized in that it includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus; memory for storing computer programs; The processor is configured to implement the steps of the method described in any one of claims 1-12 when executing the program stored in the memory. 15. A computer-readable storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1-12 are realized.

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