Group train screening method, device, storage medium and electronic equipment

Abstract

The present disclosure belongs to the field of vehicle engineering technology and provides a method, device, storage medium, and electronic device for screening group trains. The method comprises: obtaining a valid track circuit code for a train and obtaining group status information for the train; screening the head of the train based on the valid track circuit code and group status information; and screening the tail of the train based on the valid track circuit code and group status information. This group train screening method can quickly and accurately screen the head and tail of a train and is suitable for application scenarios using track circuit conditions.

Description

Technical Field

[0001] The present disclosure belongs to the field of vehicle engineering technology, and particularly relates to a method, device, storage medium, and electronic equipment for screening group trains. Background Art

[0002] Train screening, which includes head screening and tail screening, is essential for safe train tracking in moving block systems. Head screening ensures there are no hidden cars from the train's front section to the front boundary of the section, while tail screening ensures there are no hidden cars from the train's rear section to the rear boundary of the section. Only after the train completes head screening can a running permit be calculated. After the train completes tail screening, the rear train's running permit can be extended to the rear of the train and tracked using moving block systems. Otherwise, tracking can only be performed using automatic or fixed blocks.

[0003] For the CBTC train control system, train head screening methods are divided into automatic head screening, automatic tail screening, and manual head screening. Automatic head screening mainly determines that the train has automatically completed the head screening by determining that the distance from the minimum safe front end of the train to the front boundary of the axle counting section is less than the minimum vehicle length, and the adjacent axle counting section in front of the train is idle. Automatic tail screening mainly determines that the train has automatically completed the tail screening by determining that the distance from the minimum safe front end of the train to the rear boundary of the axle counting section is less than the minimum vehicle length, and the adjacent axle counting section behind the train is idle. Manual head screening is a head screening method in which the device sends a front screening request to the driver, who then confirms that there are no hidden cars ahead and notifies the device.

[0004] For CBTC train control systems, axle counting is often used to check train occupancy, and train screening is also based on axle counting. For national railways and heavy-haul railways, track circuits are often used to check train occupancy. For track section division, electrical insulation nodes or mechanical insulation nodes are often used. Compared with axle counting, the accuracy of train occupancy checks at insulation nodes is lower. Since national railways and heavy-haul railways use track circuits, the above-mentioned train screening method using axle counting cannot meet the application scenarios of train screening under track circuit conditions.

[0005] Therefore, how to meet the train screening method under the conditions of using track circuits is a technical problem to be solved. Summary of the Invention

[0006] Based on this, it is necessary to provide a group train screening method, device, storage medium and electronic equipment to address the defect that the existing screening method cannot be applied to application scenarios under track circuit conditions.

[0007] In a first aspect, an embodiment of the present invention provides a method for screening a group train, the method comprising:

[0008] Obtain the valid track circuit code of the train and obtain the group status information of the train;

[0009] screening the head of the train according to the track circuit validity code and the group status information;

[0010] The tail of the train is screened according to the track circuit validity code and the group status information.

[0011] Optionally, screening the head of the train according to the track circuit valid code and the group status information includes:

[0012] In the case where the group status information shows that the current train is the head train, if its track circuit valid code is received, it is determined that the head train screening of the current train is successful; or,

[0013] In the case where the group status information shows that the current train is the head train, if its track circuit valid code is not received, it is determined that the head screening of the current train has failed.

[0014] Optionally, screening the head of the train according to the track circuit valid code and the group status information includes:

[0015] In the case where the group status information shows that the current train is the middle train, if its track circuit valid code is received, it is determined that the head screening of the current train is successful.

[0016] Optionally, the screening of the head of the train according to the track circuit valid code and the group status information further includes:

[0017] Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train;

[0018] When the current condition meets the first preset condition, if it is determined that: the immediately preceding vehicle of the current train is the first train, the immediately following vehicle of the first train is the current train, and there is no other train between the first train and the current train, then it is determined that the head screening of the current train is successful; or,

[0019] When the current condition meets the first preset condition, if it is determined that the current train has one of the first positional relationships with the first train, then it is determined that the head screening of the current train has failed;

[0020] The first positional relationship between the current train and the first train includes: the current train is immediately adjacent to a preceding train that is not the first train; or

[0021] The immediately following train of the first train is not the current train; or,

[0022] There are other trains between the first train and the current train;

[0023] The first preset condition includes: the group status information shows that the current train is the middle train, the first positioning information shows that the immediate preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code.

[0024] Optionally, screening the tail of the train according to the track circuit valid code and the group status information includes:

[0025] When the group status information shows that the current train is the leading train and there is no following train, the first operation is performed to filter the tail of the current train:

[0026] Performing the first operation to filter the tail of the current train includes:

[0027] Recording the status data of the current train being in the first physical section of 3G;

[0028] When it is determined based on the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, obtaining slow-absorbing characteristic data of the track circuit relay from occupation to clearing;

[0029] If it is determined according to the slow-absorbing characteristic data that the relay clears the first physical section of 3G within the maximum slow-absorbing time, then it is determined that the tail screening of the current train is successful; or

[0030] When the group status information shows that the current train is the leading train and there is no following train, the second operation is performed to filter the tail of the current train:

[0031] Performing the second operation to filter the tail of the current train includes:

[0032] Recording the status data of the current train being in the first physical section of 3G;

[0033] When it is determined according to the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, a plurality of key parameters are obtained, wherein the plurality of key parameters are used to determine whether the tail screening of the current train is successful, and the plurality of key parameters include at least: the current speed of the current train, the communication delay time between the current train and the ground, the minimum length of the current train, and the distance between the minimum safe rear end of the current train and the rear boundary of the section in which it is located;

[0034] Determining a travel distance of the current train within the communication delay time range based on the communication delay time and the current speed of the current train;

[0035] Add the minimum length of the current train and the travel distance of the current train to obtain the added distance;

[0036] If the distance between the minimum safe rear end of the current train and the rear boundary of the section where the train is located is less than the added distance, it is determined that the tail screening of the current train is successful.

[0037] Optionally, screening the tail of the train according to the track circuit valid code and the group status information includes:

[0038] If the group status information indicates that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the train immediately following the current train is the second train, the train immediately preceding the second train is the current train, and there is no other train between the current train and the second train, then it is determined that the tail screening of the current train is successful; or,

[0039] When the group status information indicates that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the current train and the second train have one of the second positional relationships, then it is determined that the tail screening of the current train has failed;

[0040] The second positional relationship between the current train and the second train includes: the current train is immediately adjacent to a subsequent train that is not the second train; or

[0041] The second train is located next to the preceding train which is not the current train; or

[0042] There are other trains between the current train and the second train;

[0043] The second preset condition includes: the current train and the second train are in the same track circuit section, and the second train cannot receive its track circuit valid code.

[0044] Optionally, screening the tail of the train according to the track circuit valid code and the group status information includes:

[0045] If the group status information shows that the current train is the lead train or the middle train, and the train immediately following the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that there are no other trains in the section where the minimum safe rear end of the current train is located and in the rear adjacent section of the section where the minimum safe rear end of the current train is located, then it is determined that the tail screening of the current train is successful; or

[0046] In a case where the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the section where the minimum safe rear end of the current train is located is the fourth train, and the fourth train is not the immediately following train of the current train, then it is determined that the tail screening of the current train has failed; or,

[0047] When the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the rear adjacent section of the section where the current minimum safe rear end is located is the fifth train, and the fifth train is not the immediately following train of the current train, it is determined that the tail screening of the current train has failed.

[0048] In a second aspect, an embodiment of the present invention provides a device for screening group trains, the device comprising:

[0049] An acquisition module is used to obtain the valid track circuit code of the train and the group status information of the train;

[0050] a first screening module, configured to screen the head of the train according to the track circuit validity code and the group status information;

[0051] The second screening module is used to screen the tail of the train according to the track circuit validity code and the group status information.

[0052] In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes instructions. When the instructions are executed on an electronic device, the electronic device executes any one of the methods of the first aspect above.

[0053] In a fourth aspect, an embodiment of the present invention provides an electronic device, one or more processors, and a memory, wherein the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the electronic device to execute any method as described in the first aspect above.

[0054] In an embodiment of the present invention, a valid track circuit code of a train is obtained, as well as group status information of the train; the head of the train is screened based on the valid track circuit code and the group status information; and the tail of the train is screened based on the valid track circuit code and the group status information. The method for screening group trains provided in an embodiment of the present invention can quickly and accurately screen the head of the train and the tail of the train based on the valid track circuit code and the group status information; and the screening method can be a train screening method under track circuit conditions, which is applicable to a wider range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] A more complete understanding of the exemplary embodiments of the present invention may be obtained by referring to the following drawings. The drawings are provided to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and are not intended to limit the present invention. In the drawings, the same reference numerals generally represent the same components or steps.

[0056] Figure 1 A flowchart of a method for screening group trains according to an exemplary embodiment of the present invention;

[0057] Figure 2 A schematic diagram of screening the head of a train;

[0058] Figure 3 Another schematic diagram of screening the head of a train;

[0059] Figure 4 Another schematic diagram for screening the head of a train;

[0060] Figure 5 A schematic diagram of screening the rear of a train;

[0061] Figure 6 Another schematic diagram of screening the rear of a train;

[0062] Figure 7 Another schematic diagram of screening the rear end of a train;

[0063] Figure 8 1 is a schematic structural diagram of a screening device 400 for a group train according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0064] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0065] It should be noted that, unless otherwise specified, the technical or scientific terms used in the present invention should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0066] In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or device comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or device.

[0067] Embodiments of the present invention provide a method and apparatus for screening a group of trains, an electronic device, and a computer-readable medium, which are described below with reference to the accompanying drawings.

[0068] The screening method provided by the embodiment of the present invention can be applied to application scenarios using track circuit conditions. The main working states of the track circuit are adjustment state, shunt state, and broken track state. The adjustment state means that when the track circuit is not occupied by a locomotive or vehicle, regardless of any unfavorable power supply and weather conditions, the relay at the receiving end is in an energized state, and sends out information that the track circuit section is idle. The shunt state means that when the track circuit is occupied by a locomotive or vehicle, regardless of any unfavorable power supply and weather conditions, the relay at the receiving end is in a demagnetized state, and sends out information that the track circuit section is occupied. The broken track state means that when any part of the track circuit fails, the relay at the receiving end is in a demagnetized state, and sends out fault information. When the track circuit is in the shunt state, the locomotive receives the track circuit carrier frequency and low frequency (i.e., valid code) to determine how many track sections are idle in front of the train.

[0069] Please refer to Figure 1 , which shows a flow chart of a method for screening group trains provided by some embodiments of the present invention, such as Figure 1 As shown, the method for screening group trains may include the following steps:

[0070] Step S101: Acquire the valid track circuit code of the train and acquire the group status information of the train.

[0071] In step S101, the train group status information includes the leading car, the middle car, and the last car. If the train group status information is displayed as the leading car, it means there is no immediate preceding car; if the train group status information is displayed as the middle car, it means there is an immediate preceding car and an immediate following car; if the train group status information is displayed as the last car, it means there is an immediate preceding car and no immediate following car.

[0072] In actual application scenarios, if the current train receives a valid code for its track circuit, it is determined that there are no other trains between the current train and the front boundary of the track circuit section; if the current train does not receive a valid code for its track circuit, it is considered that there are other trains between the train and the front boundary of the track circuit.

[0073] Step S102: Screen the head of the train according to the track circuit validity code and group status information.

[0074] In one example, if the current train is the lead train, there are two situations:

[0075] Case 1: Screening the head of the train based on the track circuit validity code and group status information, including the following steps:

[0076] When the group status information shows that the current train is the head train, if its track circuit valid code is received, it is determined that the head train screening of the current train is successful.

[0077] The second scenario: Based on the track circuit validity code and group status information, the head of the train is screened, including the following steps:

[0078] When the group status information shows that the current train is the head train, if its track circuit valid code is not received, it is determined that the head screening of the current train has failed.

[0079] like Figure 2 The figure shows a schematic diagram of screening the head of a train.

[0080] like Figure 2 As shown, train 1 is at 3G, and the train reports that it is the lead train. If the train reports that it has received a valid track circuit code, the train has completed the first screening; if the train reports that it has not received a valid track circuit code, the train has not completed the first screening.

[0081] In one example, if the current train is the middle train, there are several situations as follows:

[0082] Case 1: Screening the head of the train based on the track circuit validity code and group status information, including the following steps:

[0083] When the group status information shows that the current train is the middle train, if its track circuit valid code is received, it is determined that the head screening of the current train is successful.

[0084] like Figure 3 Shown is another schematic diagram of screening the head of a train.

[0085] like Figure 3 As shown, the group status of train 2 is the middle car, train 2 is on 3G, and when it receives the valid track circuit code, it is determined that train 2 has completed the first screening.

[0086] The second scenario: screening the head of the train based on the track circuit validity code and group status information, further includes the following steps:

[0087] Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train;

[0088] When the current condition meets the first preset condition, if it is determined that: the immediately preceding vehicle of the current train is the first train, the immediately following vehicle of the first train is the current train, and there is no other train between the first train and the current train, then it is determined that the head screening of the current train is successful;

[0089] The first preset condition includes: the group status information shows that the current train is the middle train, the first positioning information shows that the immediately preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code.

[0090] The third scenario: screening the head of the train based on the track circuit validity code and group status information, further comprising the following steps:

[0091] Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train;

[0092] When the current conditions meet the first preset conditions, if it is determined that the current train has one of the first position relationships with the first train, it is determined that the head screening of the current train has failed; the first preset conditions include: the group status information shows that the current train is the middle train, the first positioning information shows that the immediate preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code.

[0093] In actual application scenarios, the first position relationship between the current train and the first train includes the following situations:

[0094] The first case: the current train is next to the preceding train which is not the first train.

[0095] The second situation: the train immediately following the first train is not the current train.

[0096] The third situation: There are other trains between the first train and the current train.

[0097] like Figure 4 Shown is another schematic diagram of screening the head of a train.

[0098] like Figure 4 As shown, the group status of train 2 is the middle car, train 2 and train 1 are in the same track circuit section, and train 2 cannot receive the valid track circuit code.

[0099] If train 2 reports that the immediately preceding vehicle in the group is train 1, and train 1 reports that the immediately following vehicle is train 2, and there are no other trains before train 2 and train 1, then it is determined that train 2 has completed the first screening.

[0100] If train 2 reports that the immediately preceding vehicle in the group is not train 1, or train 1 reports that the immediately following vehicle is not train 2, or there are other trains between train 2 and train 1, it is determined that train 2 has not completed the first screening.

[0101] Step S103: Screen the rear of the train according to the track circuit validity code and group status information.

[0102] In one example, if the current train is the lead train and there is no following train, there are two cases to determine whether the tail screening of the current train is successful, as described below:

[0103] Case 1: Screening the rear of the train based on the track circuit validity code and group status information includes the following steps:

[0104] When the group status information shows that the current train is the lead train and there is no following train, perform the first operation to filter the tail of the current train:

[0105] Performing the first operation to filter the tail of the current train includes:

[0106] Recording the status data of the current train being in the first physical section of 3G;

[0107] When it is determined based on the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, slow-absorbing characteristic data of the track circuit relay from occupation to clearing is obtained;

[0108] If it is determined based on the slow-absorbing characteristic data that the relay is within the maximum slow-absorbing time and the 3G first physical section is cleared, it is determined that the tail screening of the current train is successful.

[0109] like Figure 5 FIG. 1 is a schematic diagram showing screening of the rear end of a train.

[0110] like Figure 5As shown, train 2 is the head car of the group. When train 2 is in the first physical section of 3G, it is judged that the train has no tail screen and the status of the first physical section of 3G is recorded. After train 2 travels to the second physical section of 9DG and the minimum safe rear end leaves the first physical section of 3G, according to the slow absorption characteristics of the track circuit relay from occupation to clearing, the first physical section of 3G is cleared within the maximum slow absorption time of the relay, and it is judged that the tail screen of train 2 is completed.

[0111] The second scenario: screening the rear of the train based on the track circuit validity code and group status information, including the following steps:

[0112] When the group status information shows that the current train is the lead train and there is no following train, perform the second operation to filter the tail of the current train:

[0113] Performing the second operation to filter the tail of the current train includes:

[0114] Recording the status data of the current train being in the first physical section of 3G;

[0115] When it is determined according to the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, a plurality of key parameters are obtained, where the plurality of key parameters are used to determine whether the tail screening of the current train is successful, and the plurality of key parameters include at least: the current speed of the current train, the communication delay time between the current train and the ground, the minimum length of the current train, and the distance between the minimum safe rear end of the current train and the rear boundary of the section in which it is located;

[0116] Based on the communication delay time and the current speed of the current train, the travel distance of the current train within the communication delay time range is determined;

[0117] Add the minimum length of the current train and the travel distance of the current train to obtain the added distance;

[0118] If the distance between the minimum safe rear end of the current train and the rear boundary of the section where it is located is less than the added distance, it is determined that the tail screening of the current train is successful.

[0119] like Figure 5 As shown, train 2 is the head car of the group. When train 2 is in the first physical section of 3G, it is determined that the train has no tail screen and the status of the first physical section of 3G is recorded. After the minimum safe rear end of train 2 leaves the first physical section of 3G, the following formula (1) is used to determine whether the train has completed the tail screen, as described below:

[0120] Formula (1);

[0121] In the above formula (1), The distance between the minimum safe rear end of the current train and the rear boundary of the section where it is located. is the communication delay time between the current train and the ground, is the current speed of the train, is the minimum length of the current train.

[0122] The process of judging whether a train has completed the tail screen by using the above formula (1) is as follows:

[0123] Based on the communication delay time and the current speed of the current train , determine the current train communication delay time The distance traveled by the current train within the range; the minimum length of the current train Add the distance traveled by the current train to get the total distance; if the distance between the minimum safe rear end of the current train and the rear boundary of the section is If it is less than the added distance, it is determined that the tail screening of the current train is successful.

[0124] In one example, if the current train is the middle train and the train following the current train is the second train, there are two cases to determine whether the tail screening of the current train is successful, as described below:

[0125] In the first case, the tail of the train is screened based on the track circuit validity code and group status information, including the following steps:

[0126] When the group status information shows that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the train immediately following the current train is the second train, and the train immediately preceding the second train is the current train, and there is no other train between the current train and the second train, then it is determined that the tail screening of the current train is successful; the second preset condition includes: the current train and the second train are in the same track circuit section, and the second train cannot receive its track circuit valid code.

[0127] In the second case, the tail of the train is screened based on the track circuit validity code and group status information, including the following steps:

[0128] When the group status information shows that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that there is one of the second position relationships between the current train and the second train, it is determined that the tail screening of the current train has failed; the second preset condition includes: the current train and the second train are in the same track circuit section, and the second train cannot receive its track circuit valid code.

[0129] In actual application scenarios, the second position relationship between the current train and the second train includes the following situations:

[0130] The first case: the current train is next to the following train which is not the second train.

[0131] The second situation: the second train is next to the preceding train but is not the current train.

[0132] The third situation: There are other trains between the current train and the second train.

[0133] like Figure 6 FIG. 2 shows another schematic diagram of screening the rear end of a train.

[0134] As shown in Figure 6, the status of Train 1 is the leading car in the group, and there is a report of the following car. Train 2 and Train 1 are in the same track circuit section, and Train 2 cannot receive the valid track circuit code.

[0135] If train 1 reports that the next car in the group is train 2, and train 2 reports that the next car in the group is train 1, and there is no other train between train 2 and train 1, then it is determined that train 1 has completed the tail screening.

[0136] If train 1 reports that the immediately following vehicle in the group is not train 2, or train 2 reports that the immediately preceding vehicle is not train 1, or there are other trains between train 2 and train 1, it is determined that train 1 has not completed the tail screening.

[0137] In one example, if the current train is the lead train or the middle train, and the train immediately following the current train is the third train, and the second positioning information of the third train has not been obtained, there are two cases to determine whether the tail screening of the current train is successful, as described below:

[0138] In the first case, the tail of the train is screened based on the track circuit validity code and group status information, including the following steps:

[0139] When the group status information shows that the current train is the lead train or the middle train, and the train immediately following the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that there are no other trains in the section where the minimum safe rear end of the current train is located and in the adjacent section behind the section where the train is located, then it is determined that the tail screening of the current train is successful.

[0140] The second situation: when the group status information shows that the current train is the lead train or the middle train, and the immediate following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediate following train in the section where the minimum safe rear end of the current train is located is the fourth train, and the fourth train is not the immediate following train of the current train, then it is determined that the tail screening of the current train has failed.

[0141] The third situation: when the group status information shows that the current train is the lead train or the middle train, and the immediate following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediate following train in the adjacent section behind the section where the current minimum safe rear end is located is the fifth train, and the fifth train is not the immediate following train of the current train, then it is determined that the tail screening of the current train has failed.

[0142] like Figure 7 As shown, it is another schematic diagram of screening the rear end of a train.

[0143] like Figure 7 As shown, if Train 1 is in the group status of the lead or middle car and Train 2 is reporting as the immediate following car, but Train 2 has not reported its position, and there are no other trains in the section where Train 1's minimum safe rear end is located or in the adjacent section behind it, then Train 1 is set to complete the tail screening. If there is a train in the section where Train 1's minimum safe rear end is located or in the adjacent section behind it, and that train is not the immediate following car reported by Train 1, then Train 1 is set to not have a tail screening.

[0144] The method for screening group trains provided in an embodiment of the present invention obtains the valid track circuit code of the train and the group status information of the train; screens the head of the train based on the valid track circuit code and the group status information; and screens the tail of the train based on the valid track circuit code and the group status information. The method for screening group trains provided in an embodiment of the present invention can quickly and accurately screen the head of the train and the tail of the train based on the valid track circuit code and the group status information; and the screening method can be a train screening method under track circuit conditions, which is applicable to a wider range of application scenarios.

[0145] In the above-mentioned embodiment, a method for screening group trains is provided. Accordingly, the present invention also provides a group train screening device. The group train screening device provided in the embodiments of the present invention can implement the above-mentioned group train screening method. The group train screening device can be implemented using software, hardware, or a combination of software and hardware. For example, the group train screening device can include integrated or separate functional modules or units to perform the corresponding steps in each of the above-mentioned methods.

[0146] Please refer to Figure 8 , which shows a schematic diagram of a group train screening device provided by some embodiments of the present invention. Since the device embodiments are generally similar to the method embodiments, the description is relatively brief. For relevant details, please refer to the description of the method embodiments. The device embodiments described below are merely illustrative.

[0147] like Figure 8 As shown, the screening device 800 of the group train may include:

[0148] The acquisition module 801 is used to obtain the valid code of the track circuit of the train and obtain the group status information of the train;

[0149] The first screening module 802 is used to screen the head of the train according to the track circuit validity code and group status information;

[0150] The second screening module 803 is used to screen the rear of the train according to the track circuit validity code and group status information.

[0151] In some implementations of the embodiments of the present invention, the first screening module 802 is specifically configured to:

[0152] When the group status information shows that the current train is the head train, if its track circuit valid code is received, it is determined that the head train screening of the current train is successful; or

[0153] When the group status information shows that the current train is the head train, if its track circuit valid code is not received, it is determined that the head screening of the current train has failed.

[0154] In some implementations of the embodiments of the present invention, the first screening module 802 is specifically configured to:

[0155] When the group status information shows that the current train is the middle train, if its track circuit valid code is received, it is determined that the head screening of the current train is successful.

[0156] In some implementations of the embodiments of the present invention, the first screening module 802 is further specifically configured to:

[0157] Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train;

[0158] When the current condition meets the first preset condition, if it is determined that: the immediately preceding train of the current train is the first train, the immediately following train of the first train is the current train, and there is no other train between the first train and the current train, then it is determined that the head selection of the current train is successful; or,

[0159] When the current condition meets the first preset condition, if it is determined that the current train has one of the first positional relationships with the first train, then it is determined that the head screening of the current train has failed;

[0160] The first positional relationship between the current train and the first train includes: the current train is adjacent to a preceding train that is not the first train; or

[0161] The next train after the first train is not the current train; or

[0162] There are other trains between the first train and the current train;

[0163] The first preset condition includes: the group status information shows that the current train is the middle train, the first positioning information shows that the immediately preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code.

[0164] In some implementations of the embodiments of the present invention, the second screening module 803 is specifically configured to:

[0165] When the group status information shows that the current train is the lead train and there is no following train, perform the first operation to filter the tail of the current train:

[0166] Performing the first operation to filter the tail of the current train includes:

[0167] Recording the status data of the current train being in the first physical section of 3G;

[0168] When it is determined based on the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, slow-absorbing characteristic data of the track circuit relay from occupation to clearing is obtained;

[0169] If it is determined based on the slow-absorbing characteristic data that the relay clears the first physical section of 3G within the maximum slow-absorbing time, then it is determined that the tail screening of the current train is successful; or

[0170] When the group status information shows that the current train is the lead train and there is no following train, perform the second operation to filter the tail of the current train:

[0171] Performing the second operation to filter the tail of the current train includes:

[0172] Recording the status data of the current train being in the first physical section of 3G;

[0173] When it is determined according to the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, a plurality of key parameters are obtained, where the plurality of key parameters are used to determine whether the tail screening of the current train is successful, and the plurality of key parameters include at least: the current speed of the current train, the communication delay time between the current train and the ground, the minimum length of the current train, and the distance between the minimum safe rear end of the current train and the rear boundary of the section in which it is located;

[0174] Based on the communication delay time and the current speed of the current train, the travel distance of the current train within the communication delay time range is determined;

[0175] Add the minimum length of the current train and the travel distance of the current train to obtain the added distance;

[0176] If the distance between the minimum safe rear end of the current train and the rear boundary of the section where it is located is less than the added distance, it is determined that the tail screening of the current train is successful.

[0177] In some implementations of the embodiments of the present invention, the second screening module 803 is specifically configured to:

[0178] When the group status information shows that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the train immediately following the current train is the second train, the train immediately preceding the second train is the current train, and there is no other train between the current train and the second train, then it is determined that the tail screening of the current train is successful; or,

[0179] When the group status information indicates that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the current train and the second train have one of the second positional relationships, then it is determined that the tail screening of the current train has failed;

[0180] The second positional relationship between the current train and the second train includes: the current train is adjacent to a subsequent train that is not the second train; or

[0181] The second train is immediately adjacent to the preceding train, which is not the current train; or

[0182] There are other trains between the current train and the second train;

[0183] The second preset condition includes: the current train and the second train are in the same track circuit section, and the second train cannot receive its track circuit valid code.

[0184] In some implementations of the embodiments of the present invention, the second screening module 803 is specifically configured to:

[0185] If the group status information shows that the current train is the lead train or the middle train, and the train immediately following the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that there are no other trains in the section where the minimum safe rear end of the current train is located and in the rear adjacent section of the section where the minimum safe rear end of the current train is located, then the tail screening of the current train is determined to be successful; or

[0186] In the case where the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the section where the minimum safe rear end of the current train is located is the fourth train, and the fourth train is not the immediately following train of the current train, then it is determined that the tail screening of the current train has failed; or,

[0187] When the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the rear adjacent section of the section where the current minimum safe rear end is located is the fifth train, and the fifth train is not the immediately following train of the current train, then it is determined that the tail screening of the current train has failed.

[0188] In some embodiments of the present invention, the group train screening device 800 provided by the embodiment of the present invention is based on the same inventive concept as the group train screening method provided by the aforementioned embodiment of the present invention and has the same beneficial effects.

[0189] According to another embodiment, there is also provided a computer readable storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to execute a combination of Figure 1 The method described.

[0190] According to another embodiment, an electronic device is provided, comprising a memory and a processor, wherein the memory stores an executable code, and when the processor executes the executable code, the system realizes the combination of Figure 1 The method described.

[0191] Those skilled in the art will appreciate that, in one or more of the above examples, the functions described herein may be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium.

[0192] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solution of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for screening group trains, characterized in that: The method comprises: Obtain the valid track circuit code of the train and obtain the group status information of the train; screening the head of the train according to the track circuit validity code and the group status information; The screening of the head of the train according to the track circuit valid code and the group status information includes: In the case where the group status information shows that the current train is the head train, if its track circuit valid code is received, it is determined that the head train screening of the current train is successful; or, In the case where the group status information shows that the current train is the head train, if its track circuit valid code is not received, it is determined that the head train screening of the current train has failed; The screening of the head of the train according to the track circuit valid code and the group status information includes: In the case where the group status information shows that the current train is the middle train, if its track circuit valid code is received, it is determined that the head screening of the current train is successful; The screening of the head of the train according to the track circuit valid code and the group status information further includes: Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train; When the current condition meets the first preset condition, if it is determined that: the immediately preceding vehicle of the current train is the first train, the immediately following vehicle of the first train is the current train, and there is no other train between the first train and the current train, then it is determined that the head screening of the current train is successful; or, When the current condition meets the first preset condition, if it is determined that the current train has one of the first positional relationships with the first train, then it is determined that the head screening of the current train has failed; The first positional relationship between the current train and the first train includes: the current train is immediately adjacent to a preceding train that is not the first train; or The immediately following train of the first train is not the current train; or, There are other trains between the first train and the current train; The first preset condition includes: the group status information shows that the current train is the middle train, the first positioning information shows that the immediately preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code; screening the tail of the train according to the track circuit valid code and the group status information; The screening of the tail of the train according to the track circuit valid code and the group status information includes: When the group status information shows that the current train is the leading train and there is no following train, the first operation is performed to filter the tail of the current train: Performing the first operation to filter the tail of the current train includes: Recording the status data of the current train being in the first physical section of 3G; When it is determined based on the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, obtaining slow-absorbing characteristic data of the track circuit relay from occupation to clearing; If it is determined according to the slow-absorbing characteristic data that the relay clears the first physical section of 3G within the maximum slow-absorbing time, then it is determined that the tail screening of the current train is successful; or When the group status information shows that the current train is the leading train and there is no following train, the second operation is performed to filter the tail of the current train: Performing the second operation to filter the tail of the current train includes: Recording the status data of the current train being in the first physical section of 3G; When it is determined according to the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, a plurality of key parameters are obtained, wherein the plurality of key parameters are used to determine whether the tail screening of the current train is successful, and the plurality of key parameters include at least: the current speed of the current train, the communication delay time between the current train and the ground, the minimum length of the current train, and the distance between the minimum safe rear end of the current train and the rear boundary of the section in which it is located; Determining a travel distance of the current train within the communication delay time range based on the communication delay time and the current speed of the current train; Add the minimum length of the current train and the travel distance of the current train to obtain the added distance; If the distance between the minimum safe rear end of the current train and the rear boundary of the section where the train is located is less than the added distance, it is determined that the tail screening of the current train is successful.

2. The screening method according to claim 1, wherein The screening of the tail of the train according to the track circuit valid code and the group status information includes: If the group status information indicates that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the train immediately following the current train is the second train, the train immediately preceding the second train is the current train, and there is no other train between the current train and the second train, then it is determined that the tail screening of the current train is successful; or, When the group status information indicates that the current train is the middle train, the following train of the current train is the second train, and the current condition meets the second preset condition, if it is determined that the current train and the second train have one of the second positional relationships, then it is determined that the tail screening of the current train has failed; The second positional relationship between the current train and the second train includes: the current train is immediately adjacent to a subsequent train that is not the second train; or The second train is located next to the preceding train which is not the current train; or There are other trains between the current train and the second train; The second preset condition includes: the current train and the second train are in the same track circuit section, and the second train cannot receive its track circuit valid code.

3. The screening method according to claim 1, wherein The screening of the tail of the train according to the track circuit valid code and the group status information includes: If the group status information shows that the current train is the lead train or the middle train, and the train immediately following the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that there are no other trains in the section where the minimum safe rear end of the current train is located and in the rear adjacent section of the section where the minimum safe rear end of the current train is located, then it is determined that the tail screening of the current train is successful; or In a case where the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the section where the minimum safe rear end of the current train is located is the fourth train, and the fourth train is not the immediately following train of the current train, then it is determined that the tail screening of the current train has failed; or, When the group status information shows that the current train is the lead train or the middle train, and the immediately following train of the current train is the third train, and the second positioning information of the third train has not been obtained, if it is determined that the immediately following train in the rear adjacent section of the section where the current minimum safe rear end is located is the fifth train, and the fifth train is not the immediately following train of the current train, it is determined that the tail screening of the current train has failed.

4. A screening device for group trains, characterized in that: The device comprises: An acquisition module is used to obtain the valid track circuit code of the train and the group status information of the train; a first screening module, configured to screen the head of the train according to the track circuit validity code and the group status information; The first screening module is specifically used for: In the case where the group status information shows that the current train is the head train, if its track circuit valid code is received, it is determined that the head train screening of the current train is successful; or, In the case where the group status information shows that the current train is the head train, if its track circuit valid code is not received, it is determined that the head train screening of the current train has failed; The first screening module is specifically used for: In the case where the group status information shows that the current train is the middle train, if its track circuit valid code is received, it is determined that the head screening of the current train is successful; The first screening module is further specifically configured to: Obtaining first positioning information of the current train, and obtaining that the train immediately preceding the current train is the first train; When the current condition meets the first preset condition, if it is determined that: the immediately preceding vehicle of the current train is the first train, the immediately following vehicle of the first train is the current train, and there is no other train between the first train and the current train, then it is determined that the head screening of the current train is successful; or, When the current condition meets the first preset condition, if it is determined that the current train has one of the first positional relationships with the first train, then it is determined that the head screening of the current train has failed; The first positional relationship between the current train and the first train includes: the current train is immediately adjacent to a preceding train that is not the first train; or The immediately following train of the first train is not the current train; or, There are other trains between the first train and the current train; The first preset condition includes: the group status information shows that the current train is the middle train, the first positioning information shows that the immediately preceding train of the current train is in the same track circuit section as the current train, and the current train cannot receive its track circuit valid code; a second screening module, configured to screen the tail of the train according to the track circuit validity code and the group status information; The second screening module is specifically used for: When the group status information shows that the current train is the leading train and there is no following train, the first operation is performed to filter the tail of the current train: Performing the first operation to filter the tail of the current train includes: Recording the status data of the current train being in the first physical section of 3G; When it is determined based on the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, obtaining slow-absorbing characteristic data of the track circuit relay from occupation to clearing; If it is determined according to the slow-absorbing characteristic data that the relay clears the first physical section of 3G within the maximum slow-absorbing time, then it is determined that the tail screening of the current train is successful; or When the group status information shows that the current train is the leading train and there is no following train, the second operation is performed to filter the tail of the current train: Performing the second operation to filter the tail of the current train includes: Recording the status data of the current train being in the first physical section of 3G; When it is determined according to the status data that the current train has traveled to the second physical section of 9DG and the minimum safe rear end has left the first physical section of 3G, a plurality of key parameters are obtained, wherein the plurality of key parameters are used to determine whether the tail screening of the current train is successful, and the plurality of key parameters include at least: the current speed of the current train, the communication delay time between the current train and the ground, the minimum length of the current train, and the distance between the minimum safe rear end of the current train and the rear boundary of the section in which it is located; Determining a travel distance of the current train within the communication delay time range based on the communication delay time and the current speed of the current train; Add the minimum length of the current train and the travel distance of the current train to obtain the added distance; If the distance between the minimum safe rear end of the current train and the rear boundary of the section where the train is located is less than the added distance, it is determined that the tail screening of the current train is successful.

5. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a computer program, and when the computer program is run on an electronic device, the electronic device is caused to perform the method according to any one of claims 1 to 3.

6. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the processor and the memory are coupled, and the memory is used to store a computer program. When the processor executes the computer program, the electronic device executes the method according to any one of claims 1 to 3.

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