Train reversal information calculation method and system for radio block center

Abstract

A train reversal information calculation method for a radio block center. The method comprises: determining a stage in which a train is located; and on the basis of the stage, calculating reversal information of the train. Further provided is a train reversal information calculation system for a radio block center. The system comprises: a determination module, which is used for determining a stage in which a train is located; and a reversal information calculation module, which is used for calculating reversal information of the train on the basis of the stage. The situation in which an accident is caused by a train colliding with an obstacle or a train behind because the train erroneously determines that same has met a reversal condition due to incorrect reversal information and thus enters a reversal mode can be avoided, thereby ensuring the traveling safety of the train; and the inspection accuracy can also be improved, so as to make sure that accurate information is sent to the train.

Description

Method and system for calculating train regression information in a radio block center Technical Field

[0001] The present invention belongs to the technical field of train regression, and in particular relates to a method and system for calculating train regression information in a radio block center. Background Art

[0002] With the development of high-speed railways, the mileage of passenger high-speed railways equipped with radio block center (RBC) equipment in China alone has exceeded 10,000 kilometers. The inevitable occurrence of train rollbacks during operation is a common occurrence. If the RBC equipment fails to ensure the safe rollback of trains within its jurisdiction, this could lead to accidents such as trains running over obstacles or colliding with other trains during rollback, resulting in potential hazards.

[0003] The Radio Block Center (RBC) is the core equipment of the train control system. It wirelessly transmits movement authorization commands to onboard equipment, authorizing and monitoring train travel distance and speed to ensure safe train operation. The RBC also controls train retreat. First, a train must receive retreat information and meet the conditions for retreat before it can retreat. If the RBC incorrectly calculates the retreat information, the train may mistakenly determine that the conditions are met and enter retreat mode. Second, once a train enters retreat mode, its direction of travel changes, and the train's existing movement authorization cannot be used as the basis for retreat distance and speed. If the RBC fails to correctly calculate and update the train's retreat information, the train may collide with obstacles or cause an accident with a following vehicle during retreat.

[0004] In order to solve the above problems, it is necessary to design a method and system for calculating train regression information in a radio block center.

[0005] Summary of the Invention

[0006] In view of the above problems, the present invention provides a method for calculating train regression information in a radio block center, the method comprising:

[0007] Determine the stage the train is in;

[0008] The train's regression information is calculated according to the stages.

[0009] Preferably, the stages include a stage in which the authorized train has not entered the fallback mode and a stage in which the train has entered the fallback mode.

[0010] Preferably, the regression information includes regression area information and regression supervision information.

[0011] Preferably, the receding area information includes the distance between the train and the receding area and the length of the receding area;

[0012] The reversing supervision information includes a maximum reversing distance and a speed limit in a reversing mode.

[0013] Preferably, the distance between the train and the retreat area is the distance between the train reference position transponder and the starting point of the retreat area;

[0014] The maximum reversible distance is the maximum distance the train can reversibly travel after entering the reversing mode, and the maximum reversible distance includes the reversing area and the user-configured distance;

[0015] The reverse mode speed limit is the maximum travelable speed of the train in reverse mode.

[0016] Preferably, if the train is in the stage of not entering the regressive mode, the following steps are performed:

[0017] Get the mobile authorization line description and the 1 to n routes included in the authorization;

[0018] Traversing and querying whether all the routes are configured with a fallback area;

[0019] After finding out that there is a regression area on the approach route, update the regression information and save the line description of the regression area;

[0020] If there is a degenerate area within the authorized range, the estimated area information is written into the degenerate area information and degenerate supervision information and sent to the onboard equipment of the train;

[0021] If there is no regression area within the authorized range, the movement authorization is only sent to the on-board equipment of the train.

[0022] Preferably, if the train is in the stage of having entered the regression mode, the following steps are performed:

[0023] Calculate and update train positions;

[0024] Determining whether the conditions for updating the train's retreat information are met, wherein the conditions include whether the train is in retreat mode, whether the current train position is updated successfully, and whether the train is in a retreat area;

[0025] If any of the above conditions is not met, all retreat information is cleared and a no retreat signal is sent to the train;

[0026] If all the conditions are met, the regression information is updated;

[0027] After the retrogression information is successfully updated, the information of the retrogression area is written into the retrogression area information and retrogression supervision information, and sent to the on-board equipment of the train;

[0028] When the reversal information update fails, all reversal information is cleared and a reversal-not-allowed signal is immediately sent to the train.

[0029] Preferably, clearing all regression information includes:

[0030] The maximum reversible distance is set to 0, and the information of the reversing area is written into the reversing area information and the reversing supervision information, and sent to the on-board equipment of the train.

[0031] Preferably, updating the regression information includes the following steps:

[0032] Get the latest route descriptions and regression information for regression areas;

[0033] Get n routes in the route description of the regression area and query whether the routes in all routes meet the regression conditions;

[0034] Determine whether the train can enter the route;

[0035] Calculate regression information;

[0036] The degenerate area line description and degenerate information are saved, and the degenerate area line description is used as the degenerate area line description for checking and updating the degenerate information next time.

[0037] Preferably, the determining whether the train can enter the route comprises the following steps:

[0038] Check whether a disaster has been activated in the area where the route is located. If a disaster has been activated, the inspection is stopped and the train cannot retreat to the route. At the same time, the retreat information is calculated;

[0039] Check whether there are other trains besides the retreating train on the approach route. If there are other trains, stop checking and the train cannot retreat to the approach route. Meanwhile, calculate the retreat information.

[0040] Check whether the route has changed from locked and idle to occupied. If the route has changed from locked and idle to occupied, determine whether the 13s delay check logic is met. If not, stop checking and the train cannot retreat to the route. At the same time, calculate the retreat information.

[0041] Check whether there is degradation and other reactions on the route. If there is degradation and other reactions, the train cannot retreat to the route, and the retreat information is calculated at the same time.

[0042] Preferably, the 13s delayed inspection logic includes starting a 13s countdown. If the reversing train has not entered the approach at the end of the 13s countdown, it means that the occupation of the approach is not caused by the reversing train, then the inspection is stopped, the train cannot retreat to the approach, and the reversal information is calculated at the same time; if the train retreats and enters the approach within 13s, it means that the occupation of the approach is caused by the reversing train.

[0043] Preferably, the other reactions include a shortened movement authorization reaction caused by an approaching train and an unconditional emergency stop reaction caused by a train occupying the train.

[0044] Preferably, the calculation of the regression information comprises the following steps:

[0045] Set the distance between the train and the retreat area to 0;

[0046] Obtain the regression mode limit speed and configuration distance through the regression area index;

[0047] Calculate the length of the regression zone;

[0048] The maximum possible retreat distance is calculated based on the length of the retreat area.

[0049] Preferably, the calculation of the length of the retrograde region includes the following cases:

[0050] If the train can retreat into the approach route, the length of the retreat area is the length from the starting point of the retreat area to the starting point of the approach route;

[0051] If the train cannot reverse into the approach route, the length of the retreat area is calculated based on the end point of the retreat area.

[0052] Preferably, the calculating of the length of the retrograde region according to the end point of the retrograde region includes the following cases:

[0053] When the end point of the regression area is within the approach, the length of the regression area is the length from the start point to the end point of the regression area;

[0054] When the end point of the regression area crosses the approach route, the length of the regression area is the length from the starting point of the regression area to the end point of the approach route.

[0055] Preferably, the calculating the maximum retractable distance according to the length of the retractable area includes adding the configuration distance to the length of the retractable area as the maximum retractable distance.

[0056] The present invention also provides a system for calculating train regression information in a radio block center, the system comprising:

[0057] The judgment module is used to judge the stage of the train;

[0058] The regression information calculation module is used to calculate the regression information of the train according to the stage.

[0059] Preferably, the judgment module judges the stage of the train, and judges whether the train is in the stage of not entering the retrograde mode or the stage of having entered the retrograde mode.

[0060] Preferably, the regression information includes regression area information and regression supervision information;

[0061] The receding area information includes the distance between the train and the receding area and the length of the receding area;

[0062] The reversing supervision information includes a maximum reversing distance and a speed limit in a reversing mode.

[0063] The present invention has the following beneficial effects:

[0064] (1) In the present invention, during the operation of a train, the stage the train is in is first determined, and then the train's retreat information is modified according to the different stages. This can avoid the situation where the train mistakenly determines that it has met the retreat conditions due to incorrect retreat information and enters the retreat mode, colliding with an obstacle or causing an accident with the following vehicle, thereby ensuring the safety of the train's movement;

[0065] (2) In the present invention, when judging whether a train can enter the retreat route, by checking whether a disaster is activated in the route, whether there are other trains besides the retreating train, whether it changes from locked and idle to occupied, whether there is degradation and other reactions, etc., the accuracy of the inspection can be improved to ensure that accurate information is sent to the train.

[0066] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0068] FIG1 is a schematic diagram showing a method for calculating train regression information by a radio block center according to an embodiment of the present invention;

[0069] FIG2 is a schematic diagram showing a retrograde area and retrograde information according to an embodiment of the present invention;

[0070] FIG3 shows a flow chart of the calculation and update of deregulation information for an authorized train by a radio block center in an embodiment of the present invention;

[0071] FIG4 shows a flow chart of the calculation and updating of regression information for a train in regression mode by a radio block center in an embodiment of the present invention;

[0072] FIG5 is a flowchart showing a specific method for a radio block center to calculate and update the retrograde area information for a train in retrograde mode according to an embodiment of the present invention;

[0073] FIG6 shows a schematic diagram of a system for calculating train regression information in a radio block center according to an embodiment of the present invention. DETAILED DESCRIPTION

[0074] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0075] As shown in FIG1 , a method for calculating train regression information by a radio block center includes:

[0076] Determine the stage the train is in, including the stage where the authorized train has not entered the fallback mode and the stage where the train has entered the fallback mode;

[0077] As shown in Figure 2, the train's retreat information is changed according to the stage. The retreat information includes retreat area information P138 and retreat supervision information P139. The retreat area information includes the distance D_STARTREVERSE from the train to the retreat area and the length L_REVERSEAREA of the retreat area. The distance from the train to the retreat area is the distance between the train reference position transponder B and the starting point S of the retreat area; the retreat supervision information includes the maximum reversible distance D_REVERSE and the retreat mode limit speed V_REVERSE. The maximum reversible distance is the maximum distance the train can retreat after entering the retreat mode. The maximum reversible distance D_REVERSE includes the reversal area L_REVERSE and the configured distance Dist. The reversal area is the area between the end point E of the reversal area and the maximum reversible end point M. The reversal mode limit speed V_REVERSE is the maximum travelable speed of the train in the reversal mode. In this embodiment, outside the reversal area, in the opposite direction of the reversal area, the user can configure the maximum reversible distance Dist of the train. This value can be flexibly designed according to the line conditions.

[0078] As shown in FIG3 , if the train is in the stage of not entering the retreat mode, the following steps are performed:

[0079] Obtain the movement authorization line description and the 1 to n routes included in the authorization. Starting from the route where the train reference position balise is located, traverse the route r among the 1 to n routes to find whether there is a fallback area. If no fallback area is found on route r, the RBC sends a movement authorization without a fallback information packet to the train.

[0080] If a regressive area is found on route r, the regressive information is calculated and updated, and the line description of the first regressive area end point within the movement authorization range is saved and updated. After the regressive area is found on the route, the regressive information is updated, and the regressive area line description ReverseLine and the regressive information are saved. The radio block center sends a movement authorization with regressive information, including the regressive area information P138 and the regressive supervision information P139, to the train.

[0081] As shown in FIG4 , if the train is in the stage of having entered the retreat mode, the following steps are performed:

[0082] Calculate and update the train position, specifically the radio block center receives the train position report and updates the train position;

[0083] Determine whether the conditions for updating the train's retreat information are met, where the conditions include whether the train is in retreat mode, whether the current train position is updated successfully, and whether the train is in the retreat area;

[0084] If any of the conditions are not met, all the regression information is cleared, the RBC allows the regression information to be set to 0, and saved to the regression supervision information P139, and the RBC sends a signal that does not allow regression;

[0085] If all conditions are met, the regression information is calculated and updated;

[0086] After the retrogression information is successfully updated, the retrogression area information is written into the retrogression area information P138 and the retrogression supervision information P139 and sent to the onboard equipment of the train;

[0087] When the reversal information update fails, all reversal information is cleared and a no-reversal signal is immediately sent to the train;

[0088] Clearing all reversal information includes: setting the maximum reversal distance D_REVERSE to 0, writing the reversal area information into the reversal area information P138 and the reversal supervision information P139, and sending them to the on-board equipment of the train.

[0089] As shown in FIG5 , updating the regression information includes the following steps:

[0090] Get the latest ReverseLine description and regression information of the regression area;

[0091] Get n routes in the ReverseLine description of the regression area, and check whether route r among routes 1 to n meets the regression condition;

[0092] Determine whether the train can enter route r. Determine whether the train can enter route r including the following steps: check whether the disaster has been activated in the area where route r is located. If the disaster is activated, stop checking and the train cannot retreat to route r. Calculate and update the retreat information, save and update the line description NewReverseLine and retreat information from the new retreat area start point to the retreat area end point, and save the calculation results. If the disaster is not activated, check whether there are other trains in route r except the retreating train. If there are other trains, stop checking and the train cannot retreat to route r. Calculate the retreat information at the same time. If there are no other trains, check whether route r changes from locked and idle to occupied. If route r does not change from locked and idle to occupied, check whether route r has degradation or other reactions. If route r changes from locked and idle to occupied, then the 13s delay logic for route r to change from idle to occupied is initiated. Check to determine whether the occupation of route r is caused by a reversing train. If the occupation of route r is not caused by a reversing train, the train cannot reversal to route r. Then calculate and update the reversal information, save and update the new line description NewReverseLine and the reversal information from the start point of the reversal area to the end point of the reversal area, and save the calculation results. If the occupation of route r is caused by a reversing train, check whether there is degradation or other reactions in route r. Other reactions include the shortened movement authorization SMA reaction caused by the approaching train and the unconditional emergency stop UEM reaction caused by the train occupation. If the check fails, the train cannot reversal to route r. If the check passes, the train can reversal to route r. Then calculate and update the reversal information, save and update the new line description NewReverseLine and the reversal information from the start point of the reversal area to the end point of the reversal area, and save the calculation results.

[0093] The reversal information is calculated, and the calculation of the reversal information includes the following steps: setting the distance D_STARTREVERSE between the train and the reversal area to 0;

[0094] Obtain the retrograde mode limit speed V_REVERSE and configuration distance Dist through the retrograde area index;

[0095] Calculating the length of the retreat area L_REVERSEAREA. Calculating the length of the retreat area L_REVERSEAREA includes the following cases: if the train can retreat into route r, then the length of the retreat area is the length from the starting point of the retreat area to the starting point of route r; if the train cannot retreat into route r, then calculating the length of the retreat area L_REVERSEAREA based on the end point of the retreat area. Calculating the length of the retreat area based on the end point of the retreat area includes the following cases: when the end point of the retreat area is within route r, then the length of the retreat area is the length from the starting point of the retreat area to the end point of the retreat area; when the end point of the retreat area crosses route r, then the length of the retreat area L_REVERSEAREA is the length from the starting point of the retreat area to the end point of route r; calculating the maximum retractable distance D_REVERSE based on the length of the retreat area L_REVERSEAREA. Calculating the maximum retractable distance D_REVERSE based on the length of the retreat area L_REVERSEAREA includes adding the configuration distance Dist to the length of the retreat area L_REVERSEAREA as the maximum retractable distance D_REVERSE;

[0096] The reversal area line description ReverseLine and the reversal information are saved, and the reversal area line description is used for the next check and update of the reversal information.

[0097] As shown in FIG6 , the present invention further proposes a system for calculating train regression information in a radio block center, the system comprising:

[0098] The judgment module is used to judge the stage of the train;

[0099] The regression information calculation module is used to calculate the regression information of the train according to the stage.

[0100] The judgment module determines the stage of the train, determining whether the train is in the stage of not entering the regression mode or the train has entered the regression mode; the regression information includes the regression area information and the regression supervision information; among which, the regression area information includes the distance between the train and the regression area and the length of the regression area; the regression supervision information includes the maximum regressive distance and the regression mode limit speed.

[0101] Those skilled in the art should understand that although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for a radio block center to calculate train reverse information, characterized in that The method includes: Judging the stage where the train is located; Calculating the reverse information of the train according to the stage.

2. The method for a radio block center to calculate the reverse information of a train according to claim 1, characterized in that The stage includes the stage where an authorized train has not entered the reverse mode and the stage where the train has entered the reverse mode.

3. The method for a radio block center to calculate the reverse information of a train according to claim 2, characterized in that The reverse information includes reverse area information and reverse supervision information.

4. The method for a radio block center to calculate the reverse information of a train according to claim 3, characterized in that The reverse area information includes the distance between the train and the reverse area and the length of the reverse area; The reverse supervision information includes the maximum allowable reverse distance and the reverse mode restricted speed.

5. The method for a radio block center to calculate the reverse information of a train according to claim 4, characterized in that The distance between the train and the reverse area is the distance between the train reference position transponder and the starting point of the reverse area; The maximum allowable reverse distance is the maximum distance that the train can reverse after entering the reverse mode, and the maximum allowable reverse distance includes the reverse area and the user-configured distance; The reverse mode restricted speed is the maximum allowable driving speed of the train in the reverse mode.

6. The method for a radio block center to calculate the reverse information of a train according to claim 5, characterized in that If the train is in the stage of not entering the reverse mode, the following steps are executed: Obtaining the mobile authorization line description and 1 to n routes included in the authorization; Traversing and querying whether all the routes are configured with a reverse area; After a reverse area is found on the route, updating the reverse information and saving the reverse area line description; If there is a reverse area within the authorization range, writing the presumed area information into the reverse area information and the reverse supervision information, and sending it to the on-board equipment of the train; If there is no reverse area within the authorization range, only sending the mobile authorization to the on-board equipment of the train.

7. The method for a radio block center to calculate the reverse information of a train according to claim 5 or 6, characterized in that If the train is in the stage of having entered the reverse mode, the following steps are executed: Calculating and updating the train position; Judging whether the conditions for the train to update the reverse information are met, where the conditions include whether the train is in the reverse mode, whether the current train position is updated successfully, and whether the train is in the reverse area; If any of the conditions is not met, clearing all the reverse information and sending a signal not allowing reverse to the train; If all the conditions are met, updating the reverse information; After the reverse information is updated successfully, writing the information of the reverse area into the reverse area information and the reverse supervision information, and sending it to the on-board equipment of the train; When the update of the reverse information fails, clearing all the reverse information and immediately sending a signal not allowing reverse to the train.

8. The method for a radio block center to calculate the reverse information of a train according to claim 7, characterized in that The clearing of all the reverse information includes: Set the maximum available reverse distance to 0, write the information of the reverse area into the reverse area information and reverse supervision information, and send it to the on-board equipment of the train.

9. A method for a radio block center to calculate train reverse information according to claim 7, characterized in that The updating of the reverse information includes the following steps: Obtain the latest reverse area line description and reverse information; Obtain n routes in the reverse area line description, and query whether the routes in all routes meet the reverse conditions; Judge whether the train can enter the route; Calculate the reverse information; Save the reverse area line description and reverse information, and the reverse area line description is used as the reverse area line description for the next inspection and update of the reverse information.

10. A method for a radio block center to calculate train reverse information according to claim 9, characterized in that The judging whether the train can enter the route includes the following steps: Check whether a disaster has been activated in the area where the route is located. If a disaster has been activated, stop the inspection. The train cannot reverse to the route, and at the same time calculate the reverse information; Check whether there are other trains in the route except the reverse train. If there are other trains, stop the inspection. The train cannot reverse to the route, and at the same time calculate the reverse information; Check whether the route changes from locked and idle to occupied. If the route changes from locked and idle to occupied, judge whether it meets the 13s delay inspection logic. If it does not meet, stop the inspection. The train cannot reverse to the route, and at the same time calculate the reverse information; Check whether there are downgrades and other reactions in the route. If there are downgrades and other reactions, the train cannot reverse to the route, and at the same time calculate the reverse information.

11. A method for a radio block center to calculate train reverse information according to claim 10, characterized in that The 13s delay inspection logic includes starting a 13s countdown. If the reverse train does not enter the route after 13s, it means that the occupation of the route is not caused by the reverse train, then stop the inspection. The train cannot reverse to the route, and at the same time calculate the reverse information; If the train reverses into the route within 13s, it means that the occupation of the route is caused by the reverse train.

12. A method for a radio block center to calculate train reverse information according to claim 10, characterized in that The other reactions include the shortened movement authorization reaction caused by the approach of the train and the unconditional emergency stop reaction caused by the occupation of the train.

13. A method for a radio block center to calculate train reverse information according to claim 9, characterized in that The calculation of the reverse information includes the following steps: Set the distance between the train and the reverse area to 0; Obtain the reverse mode restricted speed and configured distance through the reverse area index; Calculate the length of the reverse area; Calculate the maximum available reverse distance according to the length of the reverse area.

14. A method for a radio block center to calculate train reverse information according to claim 13, characterized in that The calculation of the length of the reverse area includes the following situations: If the train can reverse into the route, the length of the reverse area is the length from the starting point of the reverse area to the starting point of the route; If the train cannot reverse into the route, calculate the length of the reverse area according to the end point of the reverse area.

15. A method for a radio block center to calculate train reverse information according to claim 14, characterized in that: The calculation of the reverse area length according to the reverse area end point includes the following situations: When the reverse area end point is within the route, the reverse area length is the length from the reverse area start point to the reverse area end point; When the reverse area end point crosses the route, the reverse area length is the length from the reverse area start point to the route end point.

16. A method for a radio block center to calculate train reverse information according to claim 13, characterized in that: The calculation of the maximum reverseable distance according to the reverse area length includes adding the configuration distance to the reverse area length as the maximum reverseable distance.

17. A system for a radio block center to calculate train reverse information, characterized in that The system includes: A judgment module for judging the stage where the train is located; A reverse information calculation module for calculating the reverse information of the train according to the stage.

18. A system for a radio block center to calculate train reverse information according to claim 17, characterized in that: The judgment module judges the stage where the train is located, and judges whether the train is in the stage of not entering the reverse mode or the train has entered the reverse mode stage.

19. A system for a radio block center to calculate train reverse information according to claim 17, characterized in that: The reverse information includes reverse area information and reverse supervision information; Among them, the reverse area information includes the distance of the train from the reverse area and the reverse area length; The reverse supervision information includes the maximum reverseable distance and the reverse mode restricted speed.

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