CN115257888B

CN115257888B - Train detection method, area controller and device

Info

Publication number: CN115257888B
Application number: CN202210904935.7A
Authority: CN
Inventors: 李乐; 史明媛; 陈荣; 杨勇
Original assignee: Qingdao Hisense Wechat Signal Co ltd
Current assignee: Qingdao Hisense Wechat Signal Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2023-08-04
Anticipated expiration: 2042-07-29
Also published as: CN115257888A

Abstract

The application discloses a train detection method, a zone controller and a device, wherein position information of the tail of a train sent by a vehicle-mounted controller is obtained, and section state information of a shaft counting section detected by shaft counting equipment is obtained; determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail; and detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the distance between the tail end of the current train and the tail end of the axle counting section and the information transmission delay. Therefore, delay compensation can be carried out on communication delay which is commonly existed in the process of the train tail screen, and the accuracy of the tail screen in the high-speed running process of the train is effectively improved.

Description

Train detection method, area controller and device

Technical Field

The application relates to the technical field of intelligent transportation, in particular to a train detection method, a zone controller and a device.

Background

In the digital axle counting application scene in urban rail lines, when a train passes through a certain axle counting section at high speed, the section state of the axle counting section can be changed from an occupied state to an cleared state. Thus requiring end-of-train screening.

In the related art, the distance between the tail end of the train and the tail end of the axle counting section is compared with the configuration distance (generally, the minimum train length) so as to carry out the tail end screening of the train, namely, a method for detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not, so that the accuracy of the tail end screening of the train is reduced, and the overall running efficiency of a line is reduced.

Disclosure of Invention

The purpose of the application is to provide a train detection method, an area controller and a device, which are used for solving the problem of lower accuracy of train detection of a shaft counting section caused by time delay.

In a first aspect, the present application provides a train detection method, the method comprising:

acquiring position information of the tail part of a train sent by a vehicle-mounted controller, and acquiring section state information of a shaft counting section detected by shaft counting equipment;

determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired;

And detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the distance between the tail end of the train and the tail end of the axle counting section at present and information transmission delay.

In one possible implementation manner, the detecting whether a train exists between the end of the axle counting section and the end of the axle counting section based on the acquired section status information of the axle counting section detected by the axle counting device, the distance between the end of the train and the end of the axle counting section and the information transmission delay includes:

determining that the section state information of the axle counting section does not change from an occupied state to an unobscured state when the train tail leaves the axle counting section based on the position information of the train tail and the section state information of the axle counting section;

when the current distance between the tail end of the train and the tail end of the axle counting section is smaller than a preset first distance threshold value, if the section state information of the axle counting section detected by the axle counting equipment is acquired to be in a clear state, determining that no train exists between the tail end of the axle counting section and the tail end of the train;

Starting timing when the current distance between the tail end of the train and the tail end of the axle counting section is equal to a preset first distance threshold value, and determining that no train exists between the tail end of the axle counting section and the tail end of the train if the section state information of the axle counting section detected by the axle counting equipment is acquired to be in a clear state in the information transmission time delay; and if the section state information of the axle counting section detected by the axle counting equipment is not acquired in the information transmission time delay, determining that a train exists between the tail end of the axle counting section and the tail end of the train.

determining a second distance threshold according to speed information and acceleration information when the tail part of the train leaves the axle counting section and the information transmission delay;

if the acquired section state information of the axle counting section detected by the axle counting equipment is in a clear state, determining that no train exists between the end of the axle counting section and the tail of the train when the current distance between the tail of the train and the end of the axle counting section is smaller than the second distance threshold; when the current distance between the tail end of the train and the tail end of the axle counting section is not smaller than the second distance threshold value, determining that a train exists between the tail end of the axle counting section and the tail end of the train;

And if the acquired section state information of the axle counting section detected by the axle counting equipment is an occupied state, determining that a train exists between the tail end of the axle counting section and the tail end of the train.

In one possible implementation, the information transmission delay is determined according to the following manner:

determining a time length required by the axle counting equipment to detect section state information of the axle counting section, wherein the first communication transmission time delay between the computer interlocking and the axle counting equipment and the second communication transmission time delay between the area controller and the computer interlocking are determined;

and taking the sum of the time length required by the axle counting equipment for detecting the section state information of the axle counting section, the first communication transmission delay and the second communication transmission delay as the information transmission delay.

In one possible implementation, determining the first communication transmission delay according to the following manner includes:

receiving the first communication transmission delay sent by the computer in an interlocking way;

wherein the first communication transmission delay is determined based on:

the computer interlock determines a first message sending time for sending a section state information request message to the axle counting equipment and determines a first information receiving time for receiving the section state information returned by the axle counting equipment; taking the difference between the first information receiving time and the first information sending time as a first information waiting time; and taking the difference value between the first information waiting time length and the message response time length corresponding to the axle counting equipment as the first communication transmission time delay.

In one possible implementation, the second communication transmission delay is determined according to the following manner:

determining a second message sending time for sending a section state information request message to the computer interlock, and determining a second information receiving time for receiving the section state information returned by the computer interlock;

taking the difference between the second information receiving time and the second information sending time as a second information waiting time;

and taking the difference value between the second information waiting time length and the message response time length corresponding to the computer interlocking as the second communication transmission time delay.

In one possible embodiment, the method further comprises:

and determining whether the information transmission delay is smaller than a preset delay threshold before detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the current distance between the tail end of the train and the tail end of the axle counting section and the information transmission delay.

In a second aspect, embodiments of the present application provide an area controller including at least one processor, and at least one memory; wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

In one possible implementation, the processor performs the following process:

the information transmission delay is determined according to the following mode:

In a third aspect, an embodiment of the present application provides a train detection apparatus, including:

the acquisition module is used for acquiring the position information of the tail part of the train sent by the vehicle-mounted controller and acquiring the section state information of the axle counting section detected by the axle counting equipment;

the determining module is used for determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired;

and the detection module is used for detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the current distance between the tail end of the train and the tail end of the axle counting section and the information transmission delay.

In a fourth aspect, the present application provides a computer readable storage medium, which when executed by an electronic device, causes the electronic device to perform the train detection method as described in the first aspect above.

In a fifth aspect, the present application provides a computer program product comprising a computer program: the computer program, when executed by a processor, implements the train detection method as described in the first aspect above.

The technical scheme provided by the embodiment of the application at least brings the following beneficial effects:

according to the method and the device, the position information of the tail part of the train sent by the vehicle-mounted controller is obtained, and the section state information of the axle counting section detected by the axle counting equipment is obtained; determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired; and detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the distance between the tail end of the current train and the tail end of the axle counting section and the information transmission delay. Therefore, the train detection of the axle counting section, namely the communication delay commonly existing in the train tail screen process, can be compensated in a delay manner, the accuracy of the tail screen in the train high-speed operation process can be effectively improved, and the response efficiency of the train control system is improved.

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

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings that are described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a train head screen according to an embodiment of the present application;

fig. 2 is a schematic diagram of a train tail screen according to an embodiment of the present disclosure;

fig. 3 is an application scenario diagram of a train detection method provided in an embodiment of the present application;

fig. 4 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a train in a axle counting section according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a train exiting a axle counting section provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of a train having driven off-gauge section provided in an embodiment of the present application;

fig. 8 is a flow chart of a method for determining information transmission delay according to an embodiment of the present application;

fig. 9 is a schematic delay diagram of train detection of a axle counting section according to an embodiment of the present application;

fig. 10 is a flowchart of a method for determining a first communication transmission delay according to an embodiment of the present application;

FIG. 11 is a schematic diagram of two system communications according to an embodiment of the present application;

fig. 12 is a flowchart of a method for determining a second communication transmission delay according to an embodiment of the present application;

fig. 13 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 14 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 15 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 16 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 17 is a schematic flow chart of a train detection method according to an embodiment of the present application;

Fig. 18 is a schematic flow chart of a train detection method according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of a regional controller according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of a train detecting device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Wherein the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Also, in the description of the embodiments of the present application, "/" means or, unless otherwise indicated, for example, a/B may represent a or B; the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or the like may explicitly or implicitly include one or more such feature, and in the description of embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In order to facilitate understanding of the train detection method, the zone controller and the device provided in the embodiments of the present application, a part of terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

(1) Axle counting device (AC): a railway signal device capable of detecting the number of passing wheels can replace a plurality of common track circuits, and is a preferred device for detecting the position of a train by replacing the track circuits especially in urban rail transit projects. The axle counting equipment mainly comprises an outdoor detection point (magnetic head) and an indoor host. Every two outdoor detection points form a shaft counting section, when a train passes through the detection points, a plurality of effective electromagnetic pulses are generated, and the shaft counting equipment calculates the electromagnetic pulse numbers of the shaft counting points at the two ends of the shaft counting section to judge whether the shaft counting section is clear or not, namely whether the shaft counting section is idle or not. When the number of wheels entering the axle counting section is consistent with the number of wheels leaving the axle counting section, the axle counting device can obtain the result of clearing the axle counting section, and otherwise, the axle counting section is occupied or disturbed. The status of the axle section is expressed in the form of a relay being lifted or dropped, which is finally obtained by a computer interlock (CI, computer Interlocking). The axle counting equipment and the computer are interlocked to interact axle counting information and interlocking command through the relay interface, and the digital axle counting equipment and the computer are interlocked to interact information through the Ethernet.

(2) Train screening: in a CBTC system (Communication Based Train Control System, a communication-based automatic train control system), in order to exclude the possibility of non-communication vehicles in a line, and to provide a basic safety basis for realizing mobile blocking, a Zone Controller (ZC) is required to have a train screening function, that is, the ZC needs to calculate a train position, report whether a possible non-communication vehicle exists in front of or behind the train, and screen the front end and the rear end of the train. The non-communication vehicle is called as UT vehicle for short, namely, the train without position report information. Train screening ensures driving safety, but simultaneously the accuracy of train screening also influences driving efficiency.

(3) Principle of train screening: the train cannot be compressed, the adjacent axle counting section is idle without a train, the front or rear axle counting section is idle, and the distance between the screened train and the boundary of the axle counting section is smaller than the configuration distance, so that the non-communication train can be eliminated. The train screening comprises a train head screen and a train tail screen. As shown in fig. 1, for the train head screen, the front axle counting section is idle, and the distance between the screened train and the boundary of the axle counting section is smaller than the configuration distance, the non-communication train can be eliminated. As shown in fig. 2, for the train tail screen, the rear axle counting section is idle, and the distance between the screened train and the axle counting section boundary is smaller than the configuration distance, the non-communication train can be eliminated. Wherein the deployment distance is typically the minimum vehicle length.

When the train passes through a certain axle counting zone at high speed, the axle counting zone has time delay from occupation to clearing, and the time delay also exists between the time when the axle counting zone completes clearing and the time when the ZC receives the zone clearing state, namely, the zone state information is transmitted from the AC to the CI and is retransmitted to the ZC. The tail screen can be lost in the high-speed running process of the train, once the tail screen is lost, the tail screen is difficult to reestablish in a new axle counting section, the tail screen is invalid in the communication delay, the tail screen of the train is invalid in the high-speed running process of the train, the movement authorization and management of the ZC on the subsequent train can be influenced by the invalid tail screen of the previous train, the influence of the bad conditions of external equipment on the running is amplified, the accuracy of the tail screen of the train is reduced, and the overall running efficiency of the line is reduced.

In view of this, the application provides a train detection method, an area controller and a device, which are used for solving the problem that the accuracy of train detection of a shaft counting section is low due to time delay.

The inventive concepts of the embodiments of the present application may be summarized as follows: acquiring position information of the tail part of a train sent by a vehicle-mounted controller and section state information of a shaft counting section detected by shaft counting equipment; determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired; and detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the distance between the tail end of the current train and the tail end of the axle counting section and the information transmission delay. Therefore, the train detection of the axle counting section, namely the communication delay commonly existing in the train tail screen process, can be compensated in a delay manner, the accuracy of the tail screen in the train high-speed operation process can be effectively improved, and the response efficiency of the train control system is improved.

After introducing the main inventive concept of the embodiments of the present application, the following describes an application scenario diagram of a train detection method provided by the embodiments of the present application with reference to the accompanying drawings. Fig. 3 includes: regional controller 303, computer interlock 302, axle counting device 301, wherein:

the axle counting device 301 is configured to detect the section status information of the axle counting section, and send the section status information of the axle counting section and a time period required for detecting the section status information of the axle counting section to the computer interlock 302. The axle counting device 301 is mainly composed of an outdoor detection point (magnetic head) and an indoor host. Every two outdoor detection points form an axle counting section.

The computer interlock 302 is configured to acquire information of the axle counting section sent by the axle counting device 301, such as a section status, a time length required for the axle counting device to detect the section status information of the axle counting section, and determine a first communication transmission delay between the computer interlock and the axle counting device, and send the information to the area controller 303.

The area controller 303 is configured to obtain position information of a train tail sent by the vehicle-mounted controller, and obtain section state information of a axle counting section detected by the axle counting device 301; determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment 301 is acquired; based on the acquired section state information of the axle counting section detected by the axle counting device 301, the distance between the end of the current train and the end of the axle counting section and the information transmission delay, whether a train exists between the end of the axle counting section and the end of the train or not is detected.

Of course, the method provided in the embodiment of the present application is not limited to the application scenario shown in fig. 3, but may be used in other possible application scenarios, and the embodiment of the present application is not limited. The functions that can be implemented by each device in the application scenario shown in fig. 3 will be described together in the following method embodiments, which are not described in detail herein.

In order to further explain the technical solutions provided in the embodiments of the present application, the following details are described with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide the method operational steps as shown in the following embodiments or figures, more or fewer operational steps may be included in the method based on routine or non-inventive labor. In steps where there is logically no necessary causal relationship, the execution order of the steps is not limited to the execution order provided by the embodiments of the present application.

Referring to fig. 4, a schematic flow chart of a train detection method is provided in an embodiment of the present application. As shown in fig. 4, the method comprises the steps of:

in step 401, position information of the end of train sent by the vehicle-mounted controller is acquired, and section state information of the axle counting section detected by the axle counting device is acquired.

The regional controller periodically acquires position information of the tail part of the train sent by the vehicle-mounted controller and section state information of the axle counting section detected by the axle counting equipment.

In step 402, when it is determined that the end of train leaves the axle counting section based on the position information of the end of train, an information transmission delay is determined, and a distance between the current end of train and the end of the axle counting section is determined based on the position information of the end of train which is currently acquired.

In step 403, it is detected whether a train exists between the end of the axle counting section and the end of the train based on the acquired section status information of the axle counting section detected by the axle counting device, the distance between the end of the current train and the end of the axle counting section and the information transmission delay.

For example, as shown in fig. 5, by acquiring the position information of the train tail sent by the vehicle-mounted controller, it is determined that the current train tail has not left the axle counting section a, and at this time, the Zone Controller (ZC) acquires the section state information of the axle counting section a detected by the axle counting device, but does not detect whether or not a train exists between the axle counting section a and the train tail.

When the train runs to the position shown in fig. 6, the current train tail just leaves the axle counting section A according to the acquired position information of the train tail, and at the moment, the train tail screening is started. Namely, the position information of the tail part of the train sent by the vehicle-mounted controller is obtained, and the section state information of the axle counting section detected by the axle counting equipment is obtained; and determining the transmission time delay between the moment that the train tail actually leaves the axle counting section A and the moment that the section state information of the axle counting section A detected by the axle counting equipment is acquired, calculating the distance between the current train tail and the tail end of the axle counting section A based on the position information of the train tail acquired when the section state information of the axle counting section A detected by the axle counting equipment is acquired, and then detecting whether a train exists between the axle counting section A and the train tail end.

When the train runs to the position shown in fig. 7, according to the information transmission delay, the distance between the currently acquired train tail and the tail end of the axle counting section A and the section state information of the axle counting section A detected by the currently acquired axle counting equipment, whether the train exists between the axle counting section A and the train tail or not is detected.

In this embodiment of the present application, the information transmission delay of the acquired section status information of the axle counting section needs to be determined each time when the end of the train is determined to leave the axle counting section. The information transmission delay is used for representing the transmission delay between the moment that the tail part of the train actually leaves the axle counting section and the moment that the section state information of the axle counting section detected by the axle counting equipment is acquired.

In a possible implementation manner, in a train detection method provided in the embodiment of the present application, an information transmission delay needs to be determined, so that the information transmission delay may be determined according to the manner shown in fig. 8:

in step 801, determining a length of time required for the axle counting device to detect segment status information of an axle counting segment, a first communication transmission delay between the computer interlock and the axle counting device, and a second communication transmission delay between the zone controller and the computer interlock;

In step 802, the sum of the length of time required for the axle counting device to detect the section state information of the axle counting section, the first communication transmission delay and the second communication transmission delay is taken as the information transmission delay.

For example, as shown in fig. 9, for a schematic delay diagram at the time of train detection of the axle counting section, it is assumed that the AC response time satisfies: the maximum time required by the zone state of the AC detection axle counting zone from the clearing state to the occupied state is T1, the maximum time required by the zone state of the AC detection axle counting zone from the occupied state to the clearing state is T2, then the AC sends zone state information to the CI, when the CI receives the information of the AC, the first communication transmission time delay between the CI and the AC is calculated to be T3, the T3 and the zone state information are sent to the ZC, after the ZC receives the information of the CI, the second communication transmission time delay between the ZC and the CI is calculated to be T4, and the information transmission time delay determined when the ZC performs train screening is deltaT=T1+T3+T4 or deltaT=T2+T3+T4. In the embodiment of the present application, the zone status of the axle counting zone adjacent to the rear end of the train when the train tail screen is performed is a process from the occupied status to the clear status, so that the information transmission delay determined when the ZC performs the train screening in the embodiment of the present application should be Δt=t2+t3+t4.

The maximum time length T1 required by the axle counting device to detect the section state of the axle counting section from the clearing state to the occupied state or the maximum time length T2 required by the axle counting device to detect the section state of the axle counting section from the occupied state to the clearing state is determined by the performance of the axle counting device and is a fixed value.

The AC and the CI, and the CI and the ZC communicate by adopting a standard RSSP-I railway signal security communication protocol, and the two communication parties calculate and monitor the freshness of the received message. The first communication transmission time delay T3 between the computer interlock and the axle counting device and the second communication transmission time delay T4 between the area controller and the computer interlock can be obtained through dynamic calculation of the freshness check of the General Application (GAL) information package. The method for determining the first communication transmission delay and the second communication transmission delay is specifically described below.

In one possible implementation manner, the area controller in the embodiment of the present application may receive the first communication transmission delay sent by the computer in an interlocking manner, so as to determine the first communication transmission delay T3. Wherein the first communication transmission delay is determined based on the manner shown in fig. 10:

in step 1001, the computer interlock determines a first message transmission time at which the section status information request message is transmitted to the axle counting device, and determines a first information reception time at which the section status information returned by the axle counting device is received;

In step 1002, a difference between the first information receiving time and the first message transmitting time is taken as a first information waiting time period;

in step 1003, a difference between the first information waiting time period and the message response time period corresponding to the axle counting device is taken as a first communication transmission delay.

The section state information request message sent to the axle counting equipment by the computer interlock in the application is used for requesting the axle counting equipment to send the section state information to the computer interlock.

In specific implementation, the first communication transmission delay may be calculated according to formula (1):

F＝(Cycle Count–RSN)*PR–(TSN–LTSN)*PT (1)

wherein F is a first communication transmission delay; the Cycle Count is the period number of the CI receiving the section state information; the RSN is a period number of the CI sending the section state information request message to the AC; PR is the communication period of CI; the TSN is a period number for the AC to send the section state information to the CI; LTSN is the period number of the section status information request message received by the AC; PT is the communication period of AC.

For example, as shown in fig. 11, if SYS-1 is the current system, i.e. CI system, SYS-2 is the opposite system, i.e. AC system, and if the duration of the SYS-1 software period is 250ms, the period duration filled in the universal message packet header is 250ms of the software period; the duration of the SYS-2 software period is 500ms, and the period duration filled in the universal message packet header is 500ms of the software period. The timing of the reception, processing, and transmission of the message by the two communication parties is not limited in this application, and fig. 11 is only an example, and it is assumed that the two communication parties receive the message in this period, the next period is processed, and the message is transmitted outside at the end of the period. As shown in fig. 11, if the CI system receives a segment status message sent from the AC system in the 102 th software period, the four fields included in the message are (1002,500,90,1001), the CI system calculates the first communication transmission delay of the message= [ (102-90) x 250- (1002-1001) x 500] =2500 ms.

In one possible implementation manner, the area controller in the embodiment of the present application determines the second communication transmission delay according to the manner shown in fig. 12:

in step 1201, determining a second message transmission time at which the section status information request message is transmitted to the computer interlock, and determining a second information reception time at which the section status information is returned from the computer interlock is received;

in step 1202, the difference between the second information receiving time and the second message transmitting time is taken as a second information waiting time period;

in step 1203, the difference between the second information waiting time period and the message response time period corresponding to the computer interlock is used as the second communication transmission delay.

The section state information request message sent by the area controller to the computer interlock is used for requesting the computer interlock to send the section state information to the area controller.

In specific implementation, the first communication transmission delay may be calculated according to formula (2):

F＝(Cycle Count–RSN)*PR–(TSN–LTSN)*PT (2)

wherein F is the second communication transmission delay; the Cycle Count is a Cycle number of the ZC receiving the zone state information; the RSN is a period number of the zone status information request message sent by the ZC to the CI; PR is the communication period of ZC; the TSN is a period number for the CI to send the zone state information to the ZC; the LTSN is the period number of the request message of the CI received the section status information; PT is the communication period of CI.

For example, as shown in fig. 11, if SYS-1 is the current system, i.e. ZC system, SYS-2 is the opponent system, i.e. CI system, and if the duration of the SYS-1 software period is 250ms, the period duration filled in the universal message packet header is 250ms of the software period; the duration of the SYS-2 software period is 500ms, and the period duration filled in the universal message packet header is 500ms of the software period. The timing of the reception, processing, and transmission of the message by the two communication parties is not limited in this application, and fig. 11 is only an example, and it is assumed that the two communication parties receive the message in this period, the next period is processed, and the message is transmitted outside at the end of the period. As shown in fig. 11, if the ZC system receives a zone status message sent by the CI system in the 102 th software period, the four fields included in the message are (1002,500,90,1001), the ZC system calculates a second communication transmission delay= [ (102-90) ×250- (1002-1001) ×500] =2500 ms of the message.

In this embodiment of the present application, the first communication transmission delay and the second communication transmission delay are calculated, and it is necessary to record the cycle number and the communication cycle of both communication parties during each communication.

Therefore, the first communication transmission delay and the second communication transmission delay can be calculated through the formula (1) and the formula (2), and the information transmission delay can be calculated by using the duration required by the axle counting equipment to detect the section state information of the axle counting section, the first communication transmission delay and the second communication transmission delay.

In a possible implementation manner, in this embodiment of the present application, based on the acquired section status information of the axle counting section detected by the axle counting device, the distance between the end of the current train and the end of the axle counting section, and the information transmission delay, whether a train exists between the end of the axle counting section and the end of the train is detected, and specifically, the steps shown in fig. 13 are executed:

in step 1301, when it is determined that the train tail leaves the axle counting section based on the position information of the train tail and the section state information of the axle counting section, the section state information of the axle counting section is not changed from the occupied state to the clear state;

in step 1302, when the distance between the end of the current train and the end of the axle counting section is smaller than a preset first distance threshold, if the section state information of the axle counting section detected by the axle counting device is obtained to be in a clear state, determining that no train exists between the end of the axle counting section and the end of the train;

in step 1303, starting timing when the distance between the end of the current train and the end of the axle counting section is equal to a preset first distance threshold, and if the section state information of the axle counting section detected by the axle counting equipment is acquired to be in a clear state within the information transmission time delay, determining that no train exists between the end of the axle counting section and the end of the train; if the section state information of the axle counting section detected by the axle counting equipment is not acquired in the information transmission time delay, determining that a train exists between the tail end of the axle counting section and the tail end of the train.

In a possible implementation manner, in this embodiment of the present application, before executing the method for detecting whether a train exists between the end of the axle counting section and the end of the train according to the section status information of the axle counting section, the distance between the end of the current train and the end of the axle counting section and the information transmission delay, which are sent based on the acquired computer interlock, which are shown in fig. 13, the information transmission delay needs to be determined to be less than the preset delay threshold. Therefore, the train detection method provided in the embodiment of the present application may be executed as steps as shown in fig. 14:

in step 1401, determining an information transmission delay;

in step 1402, it is determined whether the information transmission delay is less than a preset delay threshold; if the information transmission delay is not less than the preset delay threshold, in step 1403, determining that a train exists between the end of the axle counting section and the tail of the train; if the information transmission delay is smaller than the preset delay threshold, in step 1404, steps 1301 to 1303 are performed.

The preset time delay threshold may be configured by the zone controller ZC, or may be configured by a user according to an actual situation and an experience value, which is not limited in the embodiment of the present application.

In another possible implementation manner, in this embodiment of the present application, if it is determined that the end of train leaves the axle counting section based on the position information of the end of train and the section state information of the axle counting section, the section state information of the axle counting section changes from the occupied state to the clear state, and then the steps shown in fig. 15 are executed:

In step 1501, determining a distance between the current end of train and the end of the axle counting section based on the currently acquired position information of the end of train;

in step 1502, it is determined whether the distance between the end of the current train and the end of the axle counting section is less than a preset first distance threshold; if the distance between the end of the current train and the end of the axle counting section is smaller than the preset first distance threshold, in step 1503, it is determined that no train exists between the end of the axle counting section and the end of the train; if the distance between the current end of train and the end of the axle counting section is not less than the preset first distance threshold, then in step 1504, it is determined that a train exists between the end of the axle counting section and the end of the train.

The preset first distance threshold is generally a minimum train length of the train, and may be configured by a user according to actual conditions and experience values, which is not limited in the embodiment of the present application.

For easy understanding, the overall flow of the train detection method provided in the embodiment of the present application will be described with reference to fig. 16, and as shown in fig. 16, the method includes the following steps:

in step 1601, acquiring position information of a train tail sent by a vehicle-mounted controller, and acquiring section state information of a axle counting section detected by axle counting equipment;

In step 1602, determining an information transmission delay when the end of train is determined to leave the axle counting section based on the position information of the end of train;

in step 1603, it is determined whether the section state of the axle section changes from the occupied state to the cleared state when the end of train leaves the axle section:

if the section status of the axle counting section is clear, in step 1604, determining a distance between the current end of the train and the end of the axle counting section based on the currently acquired position information of the end of the train; in step 1605, determining whether the distance between the end of the current train and the end of the axle counting section is less than a preset first distance threshold; if the distance between the end of the current train and the end of the axle counting section is smaller than the preset first distance threshold, in step 1612, it is determined that no train exists between the end of the axle counting section and the end of the train; if the distance between the end of the current train and the end of the axle counting section is not less than the preset first distance threshold, in step 1613, it is determined that a train exists between the end of the axle counting section and the end of the train;

if the segment status of the axle counting segment is the occupied status, in step 1606, it is determined whether the information transmission delay is less than the preset delay threshold: if the information transmission delay is not less than the preset delay threshold, in step 1613, determining that a train exists between the end of the axle counting section and the tail of the train; if the information transmission delay is less than the preset delay threshold, in step 1607, determining a distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail during the process of driving the train away from the axle counting section; in step 1608, determining whether the distance between the end of the current train and the end of the axle counting section is less than a preset first distance threshold;

If the distance between the tail of the current train and the tail end of the axle counting section is smaller than a preset first distance threshold, and in step 1609, judging whether the section state information of the axle counting section detected by the axle counting equipment is acquired as an out-of-clear state; if the section status information of the axle counting section detected by the axle counting device is acquired to be in a clear status, in step 1612, it is determined that no train exists between the end of the axle counting section and the tail of the train; if the section status information of the axle counting section detected by the axle counting device is not obtained as the clear status, step 1610 is executed;

if the distance between the end of the current train and the end of the axle counting section is not less than the preset first distance threshold, in step 1610, starting timing when the distance between the end of the current train and the end of the axle counting section is equal to the preset first distance threshold; in step 1611, it is determined whether the section status information of the axle counting section detected by the axle counting device is acquired within the information transmission delay;

if the section status information of the axle counting section detected by the axle counting device is obtained in the information transmission delay and is in the clear status, in step 1612, it is determined that no train exists between the end of the axle counting section and the tail of the train; if the section status information of the axle counting section detected by the axle counting device is not obtained in the information transmission time delay, in step 1613, it is determined that a train exists between the end of the axle counting section and the end of the train.

The method comprises the steps that if the tail of the train is determined to leave the axle counting section A according to the position information of the tail of the train sent by the vehicle-mounted controller, the current period is recorded, and a train tail screen starts: acquiring position information of the tail part of a train and section state information of a shaft counting section A detected by shaft counting equipment, wherein the position information is sent by a vehicle-mounted controller; and calculating the distance S between the tail of the train and the tail of the axle counting section A according to the position information of the tail of the current train, calculating the information transmission delay delta T, and judging:

if the axle counting section A is in the clear state, judging whether the distance S between the tail of the train and the tail end of the axle counting section A is smaller than a preset first distance threshold L or not: if the number of the train is smaller than the number of the train tail sections, the tail screen is effective, namely that no train exists between the tail end of the axle counting section and the tail end of the train is determined; and if the train is not smaller than the train end, the tail screen is invalid, namely the train is determined to exist between the end of the axle counting section and the train end.

If the axle counting section A is in an occupied state and the information transmission delay DeltaT is not less than the preset delay threshold T _M The tailing screen is invalid, namely, a train exists between the tail end of the axle counting section and the tail end of the train is determined; if the axle counting section A is in an occupied state and the information transmission delay DeltaT is smaller than the preset delay threshold T _M The tail screen setting state is that in the screening process, in the process of train driving away:

when the distance S between the tail end of the train and the tail end of the axle counting section A is smaller than a preset first distance threshold L, if the axle counting section A is obtained to be in a clear state, the tail screen is put effectively, namely, no train exists between the tail end of the axle counting section and the tail end of the train; when the distance S between the tail of the train and the tail end of the axle counting section A is equal to a preset first distance threshold L, the axle counting section A is still not acquired to be in a clear state, and timing is started: if the axle counting section A is obtained to be in a clear state within the information transmission time delay delta T, the tail screen is effective, namely no train exists between the tail end of the axle counting section and the tail end of the train; if the information transmission delay delta T is over and the axle counting section A is still not acquired to be in a clear state, the tail screen is not effective, namely a train exists between the tail end of the axle counting section and the tail end of the train.

In a possible implementation manner, in this embodiment of the present application, the compensation of the information transmission delay may be converted into the compensation of the distance threshold, so based on the obtained section status information of the axle counting section detected by the axle counting device, the distance between the end of the current train and the end of the axle counting section, and the information transmission delay, whether the train exists between the end of the axle counting section and the end of the train is detected, and the steps shown in fig. 17 may be specifically executed:

In step 1701, a second distance threshold is determined according to the speed information and the acceleration information when the train tail leaves the axle counting section, and the information transmission delay;

in step 1702, if the acquired section status information of the axle counting section detected by the axle counting device is in a clear status, determining that no train exists between the end of the axle counting section and the end of the train when the distance between the end of the current train and the end of the axle counting section is smaller than a second distance threshold; when the distance between the tail end of the current train and the tail end of the axle counting section is not smaller than a second distance threshold value, determining that a train exists between the tail end of the axle counting section and the tail end of the train;

in step 1703, if the acquired section status information of the axle counting section detected by the axle counting device is an occupied status, it is determined that a train exists between the end of the axle counting section and the end of the train.

Wherein the second distance threshold may be determined according to equation (3):

wherein L is a second distance threshold, V ₀ The initial speed of the train tail when leaving the axle counting section is defined as delta T, which is information transmission delay, and a is acceleration of the train tail when leaving the axle counting section.

In a possible implementation manner, in this embodiment of the present application, before performing the method for detecting whether a train exists between the end of the axle counting section and the end of the train according to the section status information of the axle counting section, the distance between the end of the current train and the end of the axle counting section and the information transmission delay, which are sent based on the acquired computer interlock, which are shown in fig. 17, the information transmission delay is also required to be determined to be less than the preset delay threshold.

For easy understanding, the overall flow of the train detection method provided in the embodiment of the present application will be described with reference to fig. 18, and as shown in fig. 18, the method includes the following steps:

in step 1801, acquiring position information of a train tail sent by a vehicle-mounted controller, and acquiring section state information of a shaft counting section detected by a shaft counting device;

in step 1802, when determining that the train tail leaves the axle counting section based on the position information of the train tail, determining information transmission delay, and determining a distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail;

in step 1803, it is determined whether the information transmission delay is less than a preset delay threshold: if the information transmission delay is not less than the preset delay threshold, in step 1808, determining that a train exists between the end of the axle counting section and the tail of the train; if the information transmission delay is less than the preset delay threshold, in step 1804, a second distance threshold is determined according to the speed information and acceleration information when the end of the train leaves the axle counting section, and the information transmission delay;

in step 1805, it is determined whether the acquired section status information of the axle counting section detected by the axle counting device is in an out-of-clear status;

If the section state information of the axle counting section detected by the axle counting equipment is an occupied state, directly executing step 1808; if the section status information of the axle counting section detected by the axle counting device is in the clear status, in step 1806, it is determined whether the distance between the end of the current train and the end of the axle counting section is smaller than a second distance threshold; if the distance between the end of the current train and the end of the axle counting section is less than the second distance threshold, in step 1807, it is determined that no train exists between the end of the axle counting section and the end of the train; if the distance between the current end of train and the end of the axle counting section is not less than the second distance threshold, then in step 1808, it is determined that a train exists between the end of the axle counting section and the end of train.

Therefore, the compensation of information transmission delay can be converted into the compensation of the distance threshold value, the distance threshold value is increased, and then whether a train exists between the tail end of the axle counting section and the tail end of the train or not is detected in a mode that the distance between the tail end of the train and the tail end of the axle counting section is compared with the distance threshold value, so that the method is simple and efficient, and the detection accuracy can be improved.

Based on the foregoing description, the embodiment of the application obtains the position information of the tail of the train sent by the vehicle-mounted controller, and obtains the section state information of the axle counting section detected by the axle counting equipment; determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the current train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired; and detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the distance between the tail end of the current train and the tail end of the axle counting section and the information transmission delay. Therefore, delay compensation can be carried out on communication delay which is commonly existed in the process of the train tail screen, and the accuracy of the tail screen in the high-speed running process of the train is effectively improved.

The following describes a zone controller 1900 provided based on the same inventive concept in the embodiment of the present application with reference to fig. 19. The zone controller 1900 of fig. 19 is merely an example, and should not be construed as limiting the functionality and scope of use of the embodiments herein.

As shown in fig. 19, components of the zone controller 1900 may include, but are not limited to: the at least one processor 1901, the at least one memory 1902, and a bus 1903 that connects the various system components, including the memory 1902 and the processor 1901.

Bus 1903 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, and a local bus using any of a variety of bus architectures.

Memory 1902 may include readable media in the form of volatile memory, such as Random Access Memory (RAM) 1921 or cache memory 1922, and may further include Read Only Memory (ROM) 1923.

Memory 1902 may also include a program/utility 1925 having a set (at least one) of program modules 1924, such program modules 1924 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

The zone controller 1900 may also communicate with one or more external devices 1904 (e.g., keyboard, pointing device, etc.), one or more devices that enable a user to interact with the zone controller 1900, or any devices (e.g., routers, modems, etc.) that enable the zone controller 1900 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 1905. Also, the zone controller 1900 may communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), or a public network, such as the internet, through the network adapter 1906. As shown in fig. 19, the network adapter 1906 communicates with other modules for the zone controller 1900 via bus 1903. It should be appreciated that although not shown, other hardware or software modules may be used in connection with the zone controller 1900, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

The processor 1901 is specifically configured to perform the following processes:

In one possible implementation manner, when performing the detection of whether a train exists between the end of the axle counting section and the end of the axle counting section based on the acquired section status information of the axle counting section detected by the axle counting device, the current distance between the end of the train and the end of the axle counting section and the information transmission delay, the processor 1901 is specifically configured to perform the following procedures:

In one possible implementation, the processor 1901 is further configured to perform the following procedure:

determining the first communication transmission delay according to the following method comprises:

wherein the first communication transmission delay is determined based on:

The second communication transmission delay is determined according to the following manner:

As shown in fig. 20, based on the same inventive concept as the embodiment of the present application, the embodiment of the present application provides a train detection apparatus 2000, the apparatus 2000 including:

An acquiring module 2001, configured to acquire position information of a train tail sent by the vehicle-mounted controller, and acquire section status information of a axle counting section detected by the axle counting device;

a determining module 2002, configured to determine an information transmission delay when determining that the train tail leaves the axle counting section based on the position information of the train tail, and determine a distance between the train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired;

and the detection module 2003 is configured to detect whether a train exists between the end of the axle counting section and the end of the train based on the acquired section state information of the axle counting section detected by the axle counting device, the current distance between the end of the train and the end of the axle counting section, and the information transmission delay.

In one possible implementation, the detection module 2003 is specifically configured to:

In one possible implementation, the apparatus 2000 further includes:

the delay determining module is used for determining the information transmission delay according to the following modes:

In a possible implementation manner, the delay determining module is further configured to determine the first communication transmission delay according to the following manner, including:

wherein the first communication transmission delay is determined based on:

In a possible implementation manner, the delay determining module is further configured to determine the second communication transmission delay according to the following manner:

In one possible implementation, the apparatus 2000 further includes:

and the time delay comparison module is used for determining whether the information transmission time delay is smaller than a preset time delay threshold before detecting whether a train exists between the tail end of the axle counting section and the tail end of the train or not based on the acquired section state information of the axle counting section detected by the axle counting equipment, the current distance between the tail end of the train and the tail end of the axle counting section and the information transmission time delay.

In an exemplary embodiment, a computer readable storage medium is also provided, such as a memory, including instructions executable by a processor to perform the train detection method described above. Alternatively, the storage medium may be a non-transitory computer readable storage medium, for example, a ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

In an exemplary embodiment, a computer program product is also provided, comprising a computer program which, when executed by a processor, implements any of the train detection methods as provided herein.

In an exemplary embodiment, aspects of a train detection method provided herein may also be implemented in the form of a program product comprising program code for causing a computer device to carry out the steps of the train detection method according to the various exemplary embodiments of the application as described herein above, when the program product is run on the computer device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The program product for the train detection method of embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code and may run on an electronic device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "like" programming language or similar programming languages. The program code may execute entirely on the consumer electronic device, partly on the consumer electronic device, as a stand-alone software package, partly on the consumer electronic device, partly on the remote electronic device, or entirely on the remote electronic device or server. In the case of remote electronic devices, the remote electronic device may be connected to the consumer electronic device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external electronic device (e.g., connected through the internet using an internet service provider).

It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functions of two or more of the elements described above may be embodied in one element in accordance with embodiments of the present application. Conversely, the features and functions of one unit described above may be further divided into a plurality of units to be embodied.

Furthermore, although the operations of the methods of the present application are depicted in the drawings in a particular order, this is not required to or suggested that these operations must be performed in this particular order or that all of the illustrated operations must be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform.

The foregoing detailed description of the embodiments is merely illustrative of the general principles of the present application and should not be taken in any way as limiting the scope of the invention. Any other embodiments developed in accordance with the present application without inventive effort are within the scope of the present application for those skilled in the art.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method of train detection, the method comprising:

determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired; wherein the information transmission delay is determined according to the following manner: determining a time length required by the axle counting equipment to detect the section state information of the axle counting section, a first communication transmission time delay between a computer interlock and the axle counting equipment, and a second communication transmission time delay between an area controller and the computer interlock; taking the sum of the time length required by the axle counting equipment for detecting the section state information of the axle counting section, the first communication transmission delay and the second communication transmission delay as the information transmission delay; wherein determining the first communication transmission delay according to the following manner comprises: receiving the first communication transmission delay sent by the computer in an interlocking way; wherein the first communication transmission delay is determined based on: the computer interlock determines a first message sending time for sending a section state information request message to the axle counting equipment and determines a first information receiving time for receiving the section state information returned by the axle counting equipment; taking the difference between the first information receiving time and the first information sending time as a first information waiting time; taking the difference value between the first information waiting time length and the message response time length corresponding to the axle counting equipment as the first communication transmission time delay; wherein the second communication transmission delay is determined according to the following manner: determining a second message sending time for sending a section state information request message to the computer interlock, and determining a second information receiving time for receiving the section state information returned by the computer interlock; taking the difference between the second information receiving time and the second information sending time as a second information waiting time; taking the difference value between the second information waiting time length and the message response time length corresponding to the computer interlocking as the second communication transmission time delay;

2. The method according to claim 1, wherein the detecting whether a train exists between the end of the axle counting section to the end of the train based on the acquired section status information of the axle counting section detected by the axle counting device, the distance between the end of the train and the end of the axle counting section and the information transmission delay, comprises:

3. The method according to claim 1, wherein the detecting whether a train exists between the end of the axle counting section to the end of the train based on the acquired section status information of the axle counting section detected by the axle counting device, the distance between the end of the train and the end of the axle counting section and the information transmission delay, comprises:

4. A method according to any one of claims 1 to 3, wherein the method further comprises:

5. A zone controller comprising at least one processor and at least one memory; wherein the memory stores program code that, when executed by the processor, causes the processor to perform the following:

6. A train detection apparatus, the apparatus comprising:

the determining module is used for determining information transmission delay when the train tail leaves the axle counting section based on the position information of the train tail, and determining the distance between the train tail and the end of the axle counting section based on the currently acquired position information of the train tail; the information transmission delay is used for representing the transmission delay between the moment when the tail part of the train actually leaves the axle counting section and the moment when the section state information of the axle counting section detected by the axle counting equipment is acquired; the determining module is used for determining the information transmission delay according to the following modes: determining a time length required by the axle counting equipment to detect the section state information of the axle counting section, a first communication transmission time delay between a computer interlock and the axle counting equipment, and a second communication transmission time delay between an area controller and the computer interlock; taking the sum of the time length required by the axle counting equipment for detecting the section state information of the axle counting section, the first communication transmission delay and the second communication transmission delay as the information transmission delay; the determining module is configured to determine the first communication transmission delay according to the following manner, including: receiving the first communication transmission delay sent by the computer in an interlocking way; wherein the first communication transmission delay is determined based on: the computer interlock determines a first message sending time for sending a section state information request message to the axle counting equipment and determines a first information receiving time for receiving the section state information returned by the axle counting equipment; taking the difference between the first information receiving time and the first information sending time as a first information waiting time; taking the difference value between the first information waiting time length and the message response time length corresponding to the axle counting equipment as the first communication transmission time delay; the determining module is configured to determine the second communication transmission delay according to the following manner: determining a second message sending time for sending a section state information request message to the computer interlock, and determining a second information receiving time for receiving the section state information returned by the computer interlock; taking the difference between the second information receiving time and the second information sending time as a second information waiting time; taking the difference value between the second information waiting time length and the message response time length corresponding to the computer interlocking as the second communication transmission time delay;