阅读说明：本技术 一种基于提高列车运行安全的保护区段的解锁方法及系统 (Unlocking method and system for protecting section based on improvement of train operation safety ) 是由 吴正中 张辉 马泉华 汪永刚 于 2021-11-08 设计创作，主要内容包括：本发明涉及一种基于提高列车运行安全的保护区段的解锁方法及系统。包括：计算机联锁CI判断列车在站台区域停稳,给线路控制器LC发送欲解锁保护区段通知信息；线路控制器LC收到计算机联锁CI欲解锁保护区段通知信息后检查列车实际占压保护区段状况,若列车实际未占压保护区段则将列车移动授权MA撤回至保护区段始端；计算机联锁CI收到线路控制器LC将列车移动授权MA撤回至保护区段始端的信息后执行解锁保护区段动作。因此,本发明的优点是：(1)在保护区段解锁之前先验证列车是否实际占压保护区段,以防止上述危险发生,弥补了这一缺陷；(2)设置保护区段延时解锁触发区段,使延时解锁所需时长明显降低,有效改善了列车滞留在站台的时间。(The invention relates to an unlocking method and system for a protection zone based on improvement of train operation safety. The method comprises the following steps: the computer interlocking CI judges that the train is stably stopped in the platform area, and sends notification information of a section to be unlocked and protected to the line controller LC; after receiving the notification information of the protection section to be unlocked by the computer interlocking CI, the line controller LC checks the actual pressure occupation protection section condition of the train, and if the train does not actually occupy the pressure protection section, the line controller LC withdraws the train movement authorization MA to the start end of the protection section; and the computer interlocking CI executes the action of unlocking the protection section after receiving the information that the line controller LC withdraws the train movement authorization MA to the starting end of the protection section. Therefore, the invention has the advantages that: (1) whether the train actually occupies the protection section is verified before the protection section is unlocked, so that the danger is prevented, and the defect is overcome; (2) the protection section delay unlocking triggering section is arranged, so that the time required by delay unlocking is obviously reduced, and the time that the train stays at the platform is effectively improved.)

1. An unlocking method for a protection zone based on improvement of train operation safety is characterized by comprising the following steps:

the computer interlocking CI judges that the train is stably stopped in the platform area, and sends notification information of a section to be unlocked and protected to the line controller LC;

after receiving the notification information of the protection section to be unlocked by the computer interlocking CI, the line controller LC checks the actual pressure occupation protection section condition of the train, and if the train does not actually occupy the pressure protection section, the line controller LC withdraws the train movement authorization MA to the start end of the protection section;

and the computer interlocking CI executes the action of unlocking the protection section after receiving the information that the line controller LC withdraws the train movement authorization MA to the starting end of the protection section.

2. The unlocking method based on the protection zone for improving the train operation safety according to claim 1, wherein the computer interlock CI obtains the information of the position of the train and whether the train is stopped stably through an axle counting device.

3. The unlocking method for the protection zone based on the improvement of the train operation safety as claimed in claim 1, wherein an unlocking triggering zone L1 is provided before the approaching zone, and the protection zone is triggered to delay the unlocking countdown when the train is pressed to the unlocking triggering zone L1.

4. The unlocking method based on the protection zone for improving the train operation safety according to claim 3, wherein the unlocking triggering zone L1 is defined as: the train is backed off toward a first beacon to a zone defining a location from the distance location to a location adjacent the length of the zone where a second beacon adjacent to the first beacon backs off.

5. An unlocking system based on a protection zone for improving the operation safety of a train is characterized by comprising:

the computer interlocking CI is used for sending notification information of a section to be unlocked and protected to the line controller LC after judging that the train is stably stopped in the platform area, and executing the action of unlocking and protecting the section after receiving the information that the line controller LC withdraws the train movement authorization MA to the beginning end of the protection section;

and the line controller LC is used for checking the actual pressure occupation protection section condition of the train after receiving the notification information of the computer interlocking CI to unlock the protection section, and withdrawing the train movement authorization MA to the start end of the protection section if the train does not actually occupy the pressure protection section.

6. The unlocking system for the protection zone based on the improvement of the train operation safety according to claim 5, comprising:

and the computer interlocking CI acquires the position of the train and the information whether the train is in a stable state or not through the axle counting device.

7. The unlocking system for the protection zone based on the improvement of the train operation safety as claimed in claim 5, wherein the computer interlocking CI triggers the protection zone delay unlocking countdown at the time of the train pressure occupation triggering zone L1, and the train pressure occupation triggering zone L1 is set before the approaching zone.

Technical Field

The invention relates to an unlocking method and system for a protection section, belongs to the field of rail transit signal processing, and particularly relates to an unlocking method and system for a protection section based on improvement of train operation safety.

Background

The main purpose of the Communication Based Train Control (CBTC) system with respect to setting a protection zone is to stop a Train safely and accurately, so that the protection zone is set together at the same time as setting an entry stop route of the Train.

After the train enters the station and stops stably, the protection section needs to be unlocked. The unlocking conditions of the protection section in the prior art are as follows: 1) subsequent route arrangement, wherein the train occupies the original protection zone (no red light is emitted by the train); 2) or the train platform is determined to be stable; 3) the inbound route is locked in advance.

The current unlocking strategy for the protection zone is delayed unlocking, i.e. an unlocking delay is set, which is similar to the unlocking delay of the proximity locking zone. This unlocking delay depends on the time required for the train to safely stop in the worst case plus a system-defined margin, where the worst case is: the train is safely stopped without emergency braking at its maximum allowable speed. The basis for unlocking the protection zone can be realized by checking train stopping information or by checking the train leaving and entering the station access zone.

By checking for train instability information. The train is stably stopped in a platform area under a CBTC mode, the section is protected to be unlocked according to the example, and the implementation process is as follows: the axle counting equipment or the speed sensor acquires train stopping information (the train speed is zero), the information is transmitted to automatic protection Automatic Train Protection (ATP), the vehicle-mounted equipment transmits the information to a Line Controller (LC) on the ground, the line controller transmits the information to an interlocking Computer Interlocking (CI), and after the interlocking CI receives the train stopping information, the interlocking CI immediately transmits the action information of the section to be cancelled to the ground controller LC so as to immediately calculate new moving authorization MA (moving authorization withdrawing) for the train again, and simultaneously unlocks the protection section.

The information of the platform is cleared by checking the train. When the automatic train monitoring system ATS sets station dispatching operation for the train, the train does not stop in the platform area. In this case, the protection section cannot be unlocked by checking the train stability information, and since the train stability information cannot be acquired and is to be immediately used as the route ahead of the train arrangement station, an additional method is required to achieve the purpose of unlocking. The existing solution is as follows: and unlocking the protection section according to a three-point inspection mode that the train occupies the clear access. After the trains occupy and leave the platform section in sequence, the platform section can be unlocked through three-point inspection, the protection section is unlocked at the same time, and the protection section can be triggered to be established again when the subsequent trains enter the station.

The existing method for unlocking the protection section is that after the CI receives the stop and stability information of the train station, or the CI immediately unlocks the protection section after the CI counts down, communication interruption may occur when the train station stops, the redundancy time defined by the system for allowing the communication interruption of the train is 6S, if the communication interruption of the train is generated and the train is recovered within 6 seconds, the train cannot be braked emergently, and meanwhile, the MA cannot normally withdraw to the starting end of the protection section. During the period, once the in-station stability stopping information of the train is wrong, for example, the ATP on the train sends out the train stability stopping information, but the actual speed of the train is not 0, the train may intrude into the already unlocked protection zone, so that a danger brought by the red light burst of the train may be caused, for example, the train derails due to the change of the turnout state caused by unlocking the protection zone in the original protection zone. One of the objects of the present invention is: the danger possibility caused by communication delay of the train and the error of the train stability stopping information is solved.

The existing unlocking strategy is delayed unlocking, and for a train stopped at a station, the running time is undoubtedly wasted when the train waits for unlocking a protection section, so that the time length of the train staying at the station is increased. Whether from driving safety or line operation efficiency, is a drawback to be solved.

Disclosure of Invention

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

The invention mainly aims to solve the dangers caused by communication delay of the train and error of train stability stopping information in the prior art, reduce the stop time of the train due to unlocking of a protection section and improve the running efficiency of the train.

In order to solve the problems, the scheme of the invention is as follows:

an unlocking method based on a protection zone for improving the train operation safety comprises the following steps:

the computer interlocking CI judges that the train is stably stopped in the platform area, and sends notification information of a section to be unlocked and protected to the line controller LC;

after receiving the notification information of the protection section to be unlocked by the computer interlocking CI, the line controller LC checks the actual pressure occupation protection section condition of the train, and if the train does not actually occupy the pressure protection section, the line controller LC withdraws the train movement authorization MA to the start end of the protection section;

and the computer interlocking CI executes the action of unlocking the protection section after receiving the information that the line controller LC withdraws the train movement authorization MA to the starting end of the protection section.

Preferably, in the unlocking method based on the protection section for improving the train operation safety, the computer interlock CI acquires information about the position of the train and whether the train is stationary through the axle counting device.

Preferably, in the unlocking method for the protection zone based on the improvement of the train operation safety, an unlocking triggering zone L1 is arranged before the approaching zone, and the delayed unlocking countdown of the protection zone is triggered when the train is pressed to the unlocking triggering zone L1.

Preferably, in the unlocking method based on a protection section for improving train operation safety, the unlocking triggering section L1 is defined as: the train is backed off toward a first beacon to a zone defining a location from the distance location to a location adjacent the length of the zone where a second beacon adjacent to the first beacon backs off.

An unlocking system based on a protection zone for improving the operation safety of a train comprises:

the computer interlocking CI is used for sending notification information of a section to be unlocked and protected to the line controller LC after judging that the train is stably stopped in the platform area, and executing the action of unlocking and protecting the section after receiving the information that the line controller LC withdraws the train movement authorization MA to the beginning end of the protection section;

and the line controller LC is used for checking the actual pressure occupation protection section condition of the train after receiving the notification information of the computer interlocking CI to unlock the protection section, and withdrawing the train movement authorization MA to the start end of the protection section if the train does not actually occupy the pressure protection section.

Preferably, the unlocking system based on a protection zone for improving the train operation safety comprises:

and the computer interlocking CI acquires the position of the train and the information whether the train is in a stable state or not through the axle counting device.

Preferably, in the unlocking system based on the protection section for improving the train operation safety, the computer interlock CI triggers the protection section delay unlocking countdown at the time of the train pressure occupation triggering section L1, and the train pressure occupation triggering section L1 is set before the approach section.

Therefore, compared with the prior art, the invention has the advantages that:

(1) whether the train actually occupies the protection section is verified before the protection section is unlocked, so that the danger is prevented, and the defect is overcome.

(2) The protection section delay unlocking triggering section is arranged, so that the time required by delay unlocking is obviously reduced, and the time that the train stays at the platform is effectively improved.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 illustrates a schematic diagram of trigger zone setup in an embodiment of the present invention;

FIG. 2 illustrates a schematic diagram of an unlocking method of a protection zone based on improving train operation safety in the embodiment of the invention;

fig. 3 illustrates a schematic diagram of a train when the train is directly passing without stopping at a platform in an embodiment of the invention;

embodiments of the present invention will be described with reference to the accompanying drawings.

Detailed Description

Examples

In this embodiment, the time length of the delayed unlocking of the protection section is defined as: the maximum distance between beacons/train arrival speed;

now define the protection zone delay unlock approach zone as: the safety margin for preventing the red light from entering + the maximum braking distance of the train + the maximum information transmission delay time traveling distance;

now, the protection section delay unlocking triggering section is defined as follows: beacon 1 recedes back into the zone defining the distance location to the location receding from beacon 2 to the proximity zone length, the latter being the last trigger opportunity;

wherein, the distance position is defined as the distance defined by the beacon 1 for withdrawing a section of system, and the general calculation method is as follows: the countdown total duration minus a certain period of time (e.g., 20 s) is multiplied by the maximum allowable speed for the inbound route, as shown at L1 in fig. 1.

As shown in fig. 1, L2, L3, and L4 are set as protection zone approach zones, and L1 is set as a protection zone delayed unlocking trigger zone;

once the train occupies the pressure to trigger the section L1, the delayed unlocking of the protection section immediately triggers countdown, and the delayed unlocking can be triggered at the position of the time point of the last trigger of the train under the worst condition, so that the stop time of the train can be shortened.

Delay t when no trigger section is setcfComprises the following steps:

delay t of set trigger sectioncfComprises the following steps:

it can be verified in practice that the train extra stop time is much longer in the case of the known set trigger zone than in the case of the unset trigger zone.

In the prior art, a CI sends a request for unlocking a protection section to an LC, and an MA responds and withdraws an MA terminal to the beginning of the protection section and then directly unlocks the protection section, which is possibly caused by the running danger of a train caused by untimely MA withdrawal and the simultaneous occurrence of false report of train stability information due to the redundant time of communication interruption of the train allowed by a system.

In the past, the time that the train stays at the platform is increased due to a protection section delayed unlocking strategy, and optimization is needed in both safety aspects and operation efficiency aspects.

The unlocking method for the protection zone based on improving the train operation safety in the embodiment comprises the following steps:

the CI obtains the position of the train and information whether the train is stable or not through the axle counting equipment;

the CI judges that the train is stopped stably in the platform area, and sends notification information of a section to be unlocked and protected to the LC, but the unlocking action is not executed for the moment;

the LC receives the notice information of the protection section to be unlocked from the CI, immediately checks the condition of the actual pressure-occupied protection section of the train, withdraws the train MA to the beginning of the protection section if the actual pressure-unoccupied protection section of the train is successfully checked, and returns the information to the CI;

and the CI receives the LC return information and can immediately execute the action of unlocking the protection section.

As shown in fig. 3, when the train passes directly through the platform without stopping at the platform, the protection section is immediately unlocked by the clearing of the platform. Specifically, when the train sequentially occupies and clears the platform section (parking section), the platform section is unlocked after the three-point inspection of the platform section is realized, meanwhile, the unlocking of the protection section can be realized, and the establishment of the protection section can be continuously triggered by a subsequent train. As shown in fig. 3.

As can be seen from the above description, in the present embodiment, before the protection zone is unlocked, it is verified whether the train actually occupies the protection zone, so as to prevent the above danger, and make up for the defect.

The protection section delay unlocking triggering section is arranged in the embodiment, so that the time required by delay unlocking is obviously reduced, and the time that a train stays at a platform is effectively reduced.

In this embodiment, while, for purposes of simplicity of explanation, the methodologies are shown and described as a series of acts, it is to be understood and appreciated that the methodologies are not limited by the order of acts, as some acts may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, as may be understood by those of ordinary skill in the art.

It is noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.