Efficient protection section establishment method for CBTC system

Abstract

The present application relates to the technical field of rail transit CBTC system, and discloses a kind of efficient protection section establishment method of CBTC system, comprising: step S1, each signal machine, respectively for CBTC train and RM train according to route direction, actual slope and ATP speed curve defines different protection section;Step S2, when establishing protection section for route, according to CBTC train and RM train tracking, if protection section can be all established, then all established, if it cannot all be established, can be partially established subsequent extension or completely not established.The present application can set and establish the protection section of route as needed, improve the tracking and turnaround interval of CBTC train during normal operation, and improve the line capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit CBTC system, in particular to a high-efficiency protection section establishment method of CBTC system. BACKGROUND

[0002] With the rapid development of urban rail transit, the train control system based on communication (CBTC system) has been applied more and more widely. Urban rail transit has become the main mode of travel for urban commuter traffic, and with the expansion of the city and the rapid development of the city's edge group, the passenger flow of many existing lines exceeds the long-term forecast passenger flow, and the demand for improving the line capacity is increasingly strong.

[0003] The role of the protection section is to enable the train to safely approach the signal or stop at the operating parking point (including the platform, the turning track and the storage track). When the main body of the entry route is successfully handled during normal operation, the protection section of the exit signal is established, and the protection lock is added to the equipment elements (such as sections and switches) in the protection section. After the train stops at the station, the protection section is unlocked, and the locking of the equipment in the protection section is released. If the train accelerates out of control during the entry into the station, the train can be braked in the protection section. When the train approaches a signal or stops at the turning track or storage track stop point, the establishment and unlocking logic of the protection section of the route is the same as that of the train entering the station.

[0004] The following three points need to be considered when setting and establishing the protection section:

[0005] (1) The ATO (automatic driving system) curve braking point of the CBTC train is generally the operating parking point outside the exit signal. The ATP (automatic protection system) protection curve braking point appears inside the exit signal. The area between the ATO braking point and the ATP braking point is the protection section. If the protection section is set too short, the ATO speed will be reduced, and the entry efficiency will be affected; if the protection section is set too long, the train tracking interval will be increased, the train entry time will be delayed, and the operation efficiency will be reduced. The ATP braking point of the CBTC train is generally established according to the out-of-control braking distance of the train at the maximum entry speed.

[0006] (2) When the driver drives the RM (restricted manual driving mode) train, according to the signal driving, the train may appear to advance the signal. The protection section of the RM train is generally established according to the distance of the driver's manual emergency braking stop 3 seconds after the train advances the red light at the maximum RM speed, to form a safety protection for the RM train advancing the signal.

[0007] (3) two trains may share the protection section when they meet, and if the shared protection section can be partially established, the protection sections of the two routes may be simultaneously partially established, so that neither of the two trains can stop at the station, forming a deadlock. The principle of protection section establishment is that if the protection section cannot be completely established, it will not be established to avoid forming a deadlock.

[0008] The protection section is currently uniformly set for CBTC trains and RM trains; because the protection section required by the RM train is longer than that required by the CBTC train, the current uniform setting of the protection section causes an increase in the tracking interval of the CBTC train during normal operation. In addition, when two CBTC trains track the same route, there is no situation of two trains sharing a protection section, and only when two trains meet, there is a situation of sharing a protection section, and the current establishment of the protection section according to the same principle also causes an increase in the tracking interval of the CBTC train during normal operation.

[0009] Therefore, a high-efficiency protection section establishment method for a CBTC system is provided. SUMMARY

[0010] The purpose of the present application is to overcome the existing defects and provide a high-efficiency protection section establishment method for a CBTC system, which can set and establish the protection section of the route as needed, improve the tracking and turnaround interval of the CBTC train during normal operation, and improve the line capacity.

[0011] The technical solution to achieve the above purpose is:

[0012] A high-efficiency protection section establishment method for a CBTC system, comprising:

[0013] Step S1, for each signal, define different protection sections for CBTC trains and RM trains according to the route direction, actual slope, and ATP speed curve;

[0014] Step S2, when establishing the protection section for the route, according to the tracking of the CBTC train and the RM train, if the protection section can be completely established, it is completely established, if it cannot be completely established, it can be partially established and then extended or not established at all.

[0015] Preferably, in step S1, the protection section of each signal includes:

[0016] CBTC train protection section when the protection section switch is positioned;

[0017] CBTC train protection section when the protection section switch is reversed;

[0018] RM train protection section when the protection section switch is positioned;

[0019] RM train protection section when the section switch is in the reverse position.

[0020] Preferably, in the step S2, the train tracking situation is classified into the following:

[0021] When establishing the protection section for the route of the CBTC train, there is no other train in the protection section;

[0022] When establishing the protection section for the route of the RM train, there is no other train in the protection section;

[0023] When establishing the protection section for the route of the CBTC train, there is other train in the same direction in the protection section;

[0024] When establishing the protection section for the route of the CBTC train, there is other train in the different direction in the protection section;

[0025] When establishing the protection section for the route of the RM train, there is other train in the protection section.

[0026] Preferably, when establishing the protection section for the route of the CBTC train, there is no other train in the protection section, including:

[0027] If the route requires the protection section switch to be in the setting position, the CBTC train full protection section when the switch is in the setting position is established;

[0028] If the route requires the protection section switch to be in the reverse position, the CBTC train full protection section when the switch is in the reverse position is established.

[0029] Preferably, when establishing the protection section for the route of the RM train, there is no other train in the protection section, including:

[0030] If the route requires the protection section switch to be in the setting position, the RM train full protection section when the switch is in the setting position is established;

[0031] If the route requires the protection section switch to be in the reverse position, the RM train full protection section when the switch is in the reverse position is established.

[0032] Preferably, when establishing the protection section for the route of the CBTC train, there is other train in the same direction in the protection section, including:

[0033] If the route requires the protection section switch to be in the setting position, there is other train in the CBTC train protection section when the switch is in the setting position, and the other train is in the same direction as the CBTC train, the CBTC train protection section when the switch is in the setting position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section;

[0034] If the route requires the protection section switch to be in reverse position, there is another train in the protection section of the CBTC train with switch in reverse position, and the other train is in the same direction as the CBTC train, the CBTC train protection section with switch in reverse position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section.

[0035] Preferably, when establishing the protection section for the route of the CBTC train, there is another train in the protection section in different direction, including:

[0036] If the route requires the protection section switch to be in reverse position, there is another train in the protection section of the CBTC train with switch in reverse position, and the other train is in the same direction as the CBTC train, the CBTC train protection section with switch in reverse position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section.

[0037] If the route requires the protection section switch to be in reverse position, there is another train in the protection section of the CBTC train with switch in reverse position, and the other train is in the same direction as the CBTC train, the CBTC train protection section with switch in reverse position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section.

[0038] Preferably, when establishing the protection section for the route of the CBTC train, there is another train in the protection section in different direction, including:

[0039] If the route requires the protection section switch to be in reverse position, there is another train in the protection section of the CBTC train with switch in reverse position, and the other train is in the same direction as the CBTC train, the CBTC train protection section with switch in reverse position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section.

[0040] If the route requires the protection section switch to be in reverse position, there is another train in the protection section of the CBTC train with switch in reverse position, and the other train is in the same direction as the CBTC train, the CBTC train protection section with switch in reverse position is established from the start point to the tail of the other train, and continues to extend with the movement of the tail of the other train, and the farthest to the end of the protection section.

[0041] The beneficial effects of the present application are: the present application defines a protection section for each route direction of each operating parking point for CBTC trains and RM trains respectively; during normal operation, each train uses different protection sections according to the actual route direction, actual slope and ATP speed curve, which avoids the use of too long protection sections by CBTC trains and improves the line capacity; and when the current train and the following train use the same route to continuously track, the protection section of the following train can be partially established to the tail of the front train to avoid the following train to slow down too early; in other cases, the protection section can only be established as a whole to avoid the problem that the merging train cannot stop at the station and form a deadlock; the present application improves the tracking and turnaround interval of CBTC trains during normal operation, improves the line capacity, and avoids the problem that the train cannot enter the station due to the partial establishment of the protection section. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a flow chart of an efficient protection section establishment method of a CBTC system of the present application;

[0043] Figure 2 is a schematic diagram of the protection section in the present application;

[0044] Figure 3 is a schematic diagram of the protection section into which the train enters in the present application. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely in combination with the drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0046] The present application will be further described in combination with the drawings.

[0047] As shown in Figure 1 , an efficient protection section establishment method of a CBTC system, comprising:

[0048] Step S1: For each signal, different protection sections are defined for CBTC trains and RM trains according to the route direction, actual gradient, and ATP speed curve. The protection sections of each signal include: the CBTC train protection section when the turnout is in the correct position; the CBTC train protection section when the turnout is in the reverse position; the RM train protection section when the turnout is in the correct position; and the RM train protection section when the turnout is in the reverse position. If there are no turnouts in the protection section, only the CBTC train protection section and the RM train protection section are defined, which are subsets of the protection sections with turnouts.

[0049] Step S2: When establishing a protected section for a route, based on the tracking status of CBTC trains and RM trains, if the protected section can be fully established, it will be fully established; if it cannot be fully established, it can be partially established for subsequent extension or not established at all. Among these, CBTC trains can be downgraded and converted into RM trains.

[0050] Train tracking situations are categorized as follows: When establishing a protection section for a CBTC train's route, there are no other trains within the protection section; when establishing a protection section for an RM train's route, there are no other trains within the protection section; when establishing a protection section for a CBTC train's route, there are other trains traveling in the same direction within the protection section; when establishing a protection section for a CBTC train's route, there are other trains traveling in different directions within the protection section; and when establishing a protection section for an RM train, there are other trains within the protection section.

[0051] In the embodiments, when establishing a protected section for the route of a CBTC train, there are no other trains within the protected section, including:

[0052] If the route requires the turnout to be in position within the protected section, then the entire protected section of the CBTC train should be established when the turnout is in position.

[0053] If the route requires the turnout in the protected section to be in the reverse position, then establish all protected sections of the CBTC train when the turnout is in the reverse position.

[0054] For example, such as Figure 2 As shown, T1 is the CBTC train, T2 is other trains, X1 is the signal, and P2 is the turnout. The CBTC train is T1. When CBTC train T1 is about to enter platform 2, the CBTC system will arrange the route to signal X1. If the timetable specifies that when the train enters platform 2, turnout P2 is in the positioning route, then the system establishes the entire protection section of turnout P2 to position the CBTC train.

[0055] If the train schedule specifies a route where turnout P2 is in the reverse position when the train enters platform 2, then the system establishes the entire protection section for CBTC trains with turnout P2 in the reverse position.

[0056] In the embodiments, when establishing a protection zone for the route of RM trains, there are no other trains within the protection zone, including:

[0057] If the route requires the turnout to be in position within the protected section, then establish the entire protected section for RM trains when the turnout is in position.

[0058] If the route requires the turnout in the protected section to be in the reverse position, then establish the entire protected section for RM trains when the turnout is in the reverse position.

[0059] For example, such as Figure 2 As shown, CBTC train T1 is downgraded to RM train before entering platform 2. The CBTC system will arrange the route to signal X1. If the timetable specifies that turnout P2 is in the positioning route when the train enters platform 2, the system will establish the entire protection section of turnout P2 positioning RM train.

[0060] If the timetable specifies that when a train enters platform 2, turnout P2 is in the reverse position, then the system establishes the entire protection section for train RM with turnout P2 in the reverse position.

[0061] In this embodiment, when establishing a protected section for the route of a CBTC train, other trains traveling in the same direction are located within the protected section, including:

[0062] If the route requires the turnout in the protected section to be in position, and there are other trains in the CBTC train protected section where the turnout is in position, and the other trains are traveling in the same direction as the CBTC train, then the CBTC train protected section where the turnout is in position will be established from the starting point to the rear of the other trains, and will continue to extend as the rear of the other trains moves, up to the end of the protected section.

[0063] If the route requires the turnout in the protected section to be in the reverse position, and there are other trains in the CBTC train protected section with the turnout in the reverse position, and the other trains are traveling in the same direction as the CBTC train, then the CBTC train protected section with the turnout in the reverse position will be established from the starting point to the rear of the other trains, and will continue to extend as the rear of the other trains moves, up to the end of the protected section.

[0064] For example, such as Figure 3As shown, other train T2 is leaving platform 2 and entering the turn-back track 1, CBTC train Tl is entering platform 2, CBTC system has set up approach to signal Xl, if the train is scheduled to enter platform 2, switch P2 is in the approach, since other train T2 is in the protection section of CBTC train Tl and the direction of other train T2 is the same as CBTC train Tl, the system uses switch P2 to position part of the protection section of CBTC train and establishes the tail of other train T2. When other train T2 moves forward, the protection section of CBTC train Tl also extends forward with the tail of other train T2; when the tail of other train T2 moves out of the protection section of CBTC train Tl, the protection section of CBTC train Tl extends to the end of the protection section.

[0065] As shown, other train T2 is leaving platform 2 and entering the turn-back track 1, CBTC train Tl is entering platform 2, CBTC system has set up approach to signal Xl, if the train is scheduled to enter platform 2, switch P2 is in the approach, since other train T2 is in the protection section of CBTC train Tl and the direction of other train T2 is the same as CBTC train Tl, the system uses switch P2 to position part of the protection section of CBTC train and establishes the tail of other train T2. When other train T2 moves forward, the protection section of CBTC train Tl also extends forward with the tail of other train T2; when the tail of other train T2 moves out of the protection section of CBTC train Tl, the protection section of CBTC train Tl extends to the end of the protection section.

[0066] In the embodiment, when the protection section is set up for the approach of CBTC train, there are other trains in different directions in the protection section, including:

[0067] If the approach requires the protection section switch to be in the position, other train is in the protection section of CBTC train with switch in the position, and the direction of other train is not the same as CBTC train, then the protection section of CBTC train is not set up at all, and when other train moves out of the protection section of CBTC train, the whole protection section of CBTC train with switch in the position is set up.

[0068] If the approach requires the protection section switch to be in the reverse position, other train is in the protection section of CBTC train with switch in the reverse position, and the direction of other train is not the same as CBTC train, then the protection section of CBTC train is not set up at all, and when other train moves out of the protection section of CBTC train, the whole protection section of CBTC train with switch in the reverse position is set up.

[0069] For example, as shown in FIG. 6, other train T2 is in the protection section of CBTC train Tl with switch P2 in the position, and the direction of other train T2 is not the same as CBTC train Tl, then the protection section of CBTC train Tl is not set up at all, and when other train T2 moves out of the protection section of CBTC train Tl, the whole protection section of CBTC train Tl is set up. Figure 3As shown, after other train T2 leaves platform 2, it reverses direction abnormally. CBTC train T1 is about to enter platform 2. The CBTC system has arranged the route to signal X1. If the timetable specifies the route where turnout P2 is positioned when the train enters platform 2, CBTC train T1 should establish the entire protection section of turnout P2 for positioning the CBTC train. However, since other train T2 and CBTC train T1 are traveling in different directions, and other train T2 is within the protection section of CBTC train T1, the protection section of CBTC train T1 is not established at all. Only when other train T2 leaves the protection section of CBTC train T1 will the entire protection section of CBTC train T1 be established when turnout P2 is positioned.

[0070] If the timetable specifies a route where turnout P2 is in the reverse position when a train enters platform 2, CBTC train T1 should establish the entire protection section for CBTC trains with turnout P2 in the reverse position. However, since other trains T2 travel in different directions from CBTC train T1, and other trains T2 are within the protection section of CBTC train T1, the protection section of CBTC train T1 is not established at all. Only after other trains T2 leave the protection section of CBTC train T1 will the entire protection section for CBTC trains with turnout P2 in the reverse position be established.

[0071] In the embodiment, when establishing a protection zone for the route of the RM train, other trains are present within the protection zone, including:

[0072] If the route requires the turnout to be in the protected section, and there are other trains in the protected section of the RM train with the turnout in the protected section, then the RM train's protected section will not be established at all. Once the other trains leave the RM train's protected section, then the entire protected section of the RM train when the turnout is in the protected section will be established.

[0073] If the route requires the protection section turnout to be in the reverse position, and other trains are within the protection section of the RM train with the turnout in the reverse position, then the RM train protection section is not established at all. Once the other trains leave the RM train protection section, then the entire protection section of the RM train with the turnout in the reverse position is established.

[0074] For example, such as Figure 3 As shown, CBTC train T1 is downgraded to RM train before entering platform 2. Other train T2 leaves platform 2 and is entering turnaround track 1. RM train is about to enter platform 2. The CBTC system has arranged the route to signal X1. If the timetable specifies the route where turnout P2 is positioned when the train enters platform 2, the RM train should establish the entire protection section of turnout P2 for the RM train. However, since other train T2 is within the protection section of the RM train, the protection section of the RM train is not established at all. The entire protection section of the RM train is established when turnout P2 is positioned, after other train T2 leaves the protection section of the RM train.

[0075] If the running map specifies that the train enters the platform 2, the turnout P2 is in the reverse position, and the RM train should establish the full protection section of the turnout P2 in the reverse position for the RM train. However, because the other train T2 is in the protection section of the RM train, the protection section of the RM train is not established at all. When the other train T2 leaves the protection section of the RM train, the full protection section of the turnout P2 in the reverse position for the RM train is established.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application, but not intended to limit the present application; even though the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions recorded in the above embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An efficient protection section establishment method for a CBTC system, characterized in that, Comprise: Step S1, each signal machine, respectively for CBTC train and RM train according to the route direction, the actual slope and the ATP speed curve defines different protection section; Step S2, when establishing protection section for route, according to CBTC train and RM train tracking, if protection section can be established entirely, then establish entirely, if cannot be established entirely, can be extended or not established completely after partial establishment; In the step S2, train tracking is divided into the following several kinds: When establishing protection section for the route of CBTC train, there is no other train in the protection section; When establishing protection section for the route of RM train, there is no other train in the protection section; When establishing protection section for the route of CBTC train, there is other train in the protection section of the same direction; When establishing protection section for the route of CBTC train, there is other train in the protection section of different direction; When establishing protection section for the route of RM train, there is other train in the protection section; When establishing protection section for the route of CBTC train, there is no other train in the protection section, including: If the route requires protection section switch to be in positioning, then establish all CBTC train protection sections when switch is in positioning; If the route requires protection section switch to be in reverse positioning, then establish all CBTC train protection sections when switch is in reverse positioning; When establishing protection section for the route of RM train, there is no other train in the protection section, including: If the route requires protection section switch to be in positioning, then establish all RM train protection sections when switch is in positioning; If the route requires protection section switch to be in reverse positioning, then establish all RM train protection sections when switch is in reverse positioning; When establishing protection section for the route of CBTC train, there is other train in the protection section of the same direction, including: If the route requires protection section switch to be in positioning, there is other train in the CBTC train protection section when switch is in positioning, and the other train is consistent with the CBTC train direction, then establish CBTC train protection section from the start point to the tail of other train, and continue to extend with the movement of the tail of other train, farthest to the end of protection section; If the route requires protection section switch to be in reverse positioning, there is other train in the CBTC train protection section when switch is in reverse positioning, and the other train is consistent with the CBTC train direction, then establish CBTC train protection section from the start point to the tail of other train, and continue to extend with the movement of the tail of other train, farthest to the end of protection section; When establishing protection section for the route of CBTC train, there is other train in the protection section of different direction, including: If the route requires protection section switch to be in positioning, there is other train in the CBTC train protection section when switch is in positioning, and the other train is inconsistent with the CBTC train direction, then CBTC train protection section is not established completely, and then establish all CBTC train protection sections when switch is in positioning, after other train drives out of the CBTC train protection section; If the route requires the protection section switch in reverse position, other trains are in the protection section of the CBTC train with switch in reverse position, and the direction of other trains is not consistent with the CBTC train, the CBTC train protection section is not established at all, and when the other trains leave the protection section of the CBTC train, the entire protection section of the CBTC train with switch in reverse position is established; When the protection section is established for the route of the RM train, there are other trains in the protection section, including: If the route requires the protection section switch in reverse position, other trains are in the protection section of the CBTC train with switch in reverse position, and the direction of other trains is not consistent with the CBTC train, the CBTC train protection section is not established at all, and when the other trains leave the protection section of the CBTC train, the entire protection section of the CBTC train with switch in reverse position is established; If the route requires the protection section switch in reverse position, other trains are in the protection section of the CBTC train with switch in reverse position, and the direction of other trains is not consistent with the CBTC train, the CBTC train protection section is not established at all, and when the other trains leave the protection section of the CBTC train, the entire protection section of the CBTC train with switch in reverse position is established; 2. The method for establishing a protection section of a CBTC system according to claim 1, wherein, The protection section of each signal in the step S1 includes: CBTC train protection section with switch in normal position; CBTC train protection section with switch in reverse position; RM train protection section with switch in normal position; RM train protection section with switch in reverse position.

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