Access protection method and system
By setting different protective signs and judgment conditions, and prioritizing the use of turnouts or signals as protective conditions, the problem of low train operation efficiency caused by setting turnouts as single-action turnouts in rail transit has been solved, and the normal processing of routes and the improvement of operational efficiency have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-06
- Publication Date
- 2026-04-14
AI Technical Summary
In rail transit, because the turnouts are set as single-action turnouts, the signal cannot be opened when the routes for both the up and down lines are processed at the same time, which affects the efficiency of train operation.
By setting different protection signs, turnouts are given priority as protection conditions. When a turnout is not in a protected state, it is used as the protection condition. When a turnout is in a protected state, the signal protection sign is used, and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, they are judged and assigned values one by one according to the order in which the route is processed.
This enabled the normal processing of routes, improving the train throughput capacity and operational efficiency of the station's throat area.
Smart Images
Figure CN121849205A_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of rail transit technology, and in particular to a route protection method and system. Background Technology
[0002] like Figure 1 As shown, entrance signals B to D are for the up line, and entrance signals C to A are for the down line. All turnouts in the station yard are single-action turnouts. Left throat: When processing a train route that passes through turnout #2, turnout #6 must be protected to the reverse position. When processing a train route that passes through turnout #4, turnout #6 must be protected to the position. Right throat: When processing a train route that passes through turnout #3, turnout #5 must be protected to the position. When processing a train route that passes through turnout #1, turnout #5 must be protected to the reverse position. According to these protection requirements, when the computer interlocking system processes routes, trains on the up and down lines at this station cannot run simultaneously, severely impacting train operation efficiency.
[0003] Generally, in similar stations, turnouts #4 and #6 are double-acting turnouts, while turnout #2 is a single-acting turnout. Train routes for the up and down lines are processed separately and unlocked as trains proceed in sequence. The specific operating steps are as follows: 1. For example Figure 2 As shown, for the upline route, first press the start button BLA, then press the end button KIIILA. The 4 / 6# turnout will be turned to the position, arranging the receiving route from B to IIIG. 2. For example Figure 3 As shown, for the downline route, first press the start button ALA, then press the end button KILA. The No. 2 turnout will be turned to the position, and the receiving route from A to IG will be processed.
[0004] Because turnouts 4 and 6 are double-acting turnouts, when one turnout is in the correct position, the other turnout will also turn to the correct position accordingly. Although turnout 2 is a single-acting turnout, there are no over-limit insulation conditions on the track. Therefore, when turnout 2 is in the correct position, even if turnout 6 is not protected to the reverse position, there will be no risk of side impact when a train enters the section where turnout 6 is located. Moreover, since turnout 2 is in the locked state, there is no possibility of accidentally turning turnout 2 to the reverse position, and there is no safety risk.
[0005] Due to actual operational needs on site, turnouts #4, #6, and #2 will all be configured as single-action turnouts, and protective turnouts are also required. Therefore, CBI (Computer Integrated Circuit) is needed to handle the logic for these protective turnouts. The route processing method and solution are explained below: 1. For example Figure 4 As shown, the upline route connects train B to train IIIG: Press the start button BLA and the end button KIIILA to process the receiving route from B to IIIG, lock the route to turnout #4, and protect turnout #6 to the position. 2. For example Figure 5 As shown, the downline route starts from train A and proceeds to train IG: Press the starting ALA and the terminal KILA to process the train receiving route from A to IG. Lock the route and turnout #2. Require turnout #6 to be protected to the reverse position. In the existing technical solution, for two parallel lines, when both the up and down routes are processed simultaneously, the up route prioritizes turning point #6 to its correct position. When the down route is processed, it cannot turn point #6 back to its correct position, resulting in the down route being unable to process, the signal not being open, and train operations can only commence after the up route is unlocked. Conversely, if the down route prioritizes turning point #6 to its correct position, the up route cannot turn point #6 back to its correct position, resulting in the up route being unable to process, the signal not being open, and train operations can only commence after the down route is unlocked. On busy passenger dedicated lines, the inability to conduct train operations on both the up and down routes simultaneously significantly impacts actual transport efficiency. Summary of the Invention
[0006] To address the aforementioned issues, this disclosure provides a route protection method and system to resolve problems related to turnout protection and route processing, thereby improving the throughput capacity of operations in the station throat area and increasing actual on-site transportation efficiency.
[0007] Firstly, a route protection method, the method comprising: The interlocking system is equipped with different protection indicators, which include the protection status and the no-protection status. Interlocking is handled according to the protection conditions of the route, using the following judgment: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
[0008] Furthermore, different protective signs are set up for the interlocking system, including: turnout protection signs and signal protection signs; Among them, turnout protection signs include: protected state and unprotected state; the protection state of turnout protection signs includes: positioning protection state and reverse position protection state; signal protection signs include: protected state and unprotected state.
[0009] Furthermore, the interlocking system is equipped with different protective markings, including: The protection sign for turnouts is DCFHflag1, and the protection sign for signal lights is XHFHflag1; When the turnout is in the positioning protection state, DCFHflag1=0x55; when it is in the reverse position protection state, DCFHflag1=0xaa; when it is in the no-protection state, DCFHflag1=0x00. When the signal is in protected mode, XHFHflag1=0x22; when it is in unprotected mode, XHFHflag1=0x00.
[0010] Furthermore, turnouts are prioritized as a protection condition. When a turnout is determined to be unprotected, it is used as the protection condition. When a turnout is protected, signal protection signs are used, and the signal is used as the protection condition, including: First, determine if the turnout is in the 0x00 state, then use the turnout as the protection condition. When the turnout is not in the 0x00 state, use the signal protection sign and use the signal as the protection condition.
[0011] Furthermore, when the turnout is not in a 0x00 state, the signal protection sign is used, and the signal is taken as a protection condition, including: Locate the first set of signal protection signs immediately adjacent to the turnout on the route direction, and use the first set of signals as the protection condition.
[0012] Furthermore, when there are multiple sets of switches and signals requiring protection along the route, each set is assessed individually, including: If there are multiple sets of turnouts or signals that need protection in a route, the interlocking shall use the turnouts as protection conditions according to the order in which the routes were processed. After the route is processed, the first set of turnouts requiring protection is assigned a value, and then the search continues for the next set of turnouts requiring protection. When a set of turnouts is in a protected state, the protection sign of the first set of signal machines adjacent to the turnout in the route direction is taken as the protection condition.
[0013] Secondly, a route protection system includes: Status setting unit and protection judgment unit; The status setting unit is used to set different protection flags for the interlock, including protection status and no protection status. The protection judgment unit is used to interlock and process protection conditions according to the route, using the following judgment: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
[0014] Furthermore, different protective signs are set up for the interlocking system, including: turnout protection signs and signal protection signs; Among them, turnout protection signs include: protected state and unprotected state; the protection state of turnout protection signs includes: positioning protection state and reverse position protection state; signal protection signs include: protected state and unprotected state.
[0015] Furthermore, the interlocking system is equipped with different protective markings, including: The protection sign for turnouts is DCFHflag1, and the protection sign for signal lights is XHFHflag1; When the turnout is in the positioning protection state, DCFHflag1=0x55; when it is in the reverse position protection state, DCFHflag1=0xaa; when it is in the no-protection state, DCFHflag1=0x00. When the signal is in protected mode, XHFHflag1=0x22; when it is in unprotected mode, XHFHflag1=0x00.
[0016] Furthermore, turnouts are prioritized as a protection condition. When a turnout is determined to be unprotected, it is used as the protection condition. When a turnout is protected, signal protection signs are used, and the signal is used as the protection condition, including: First, determine if the turnout is in the 0x00 state, then use the turnout as the protection condition. When the turnout is not in the 0x00 state, use the signal protection sign and use the signal as the protection condition.
[0017] Furthermore, when the turnout is not in a 0x00 state, the signal protection sign is used, and the signal is taken as a protection condition, including: Locate the first set of signal protection signs immediately adjacent to the turnout on the route direction, and use the first set of signals as the protection condition.
[0018] Furthermore, when there are multiple sets of switches and signals requiring protection along the route, each set is assessed individually, including: If there are multiple sets of turnouts or signals that need protection in a route, the interlocking shall use the turnouts as protection conditions according to the order in which the routes were processed. After the route is processed, the first set of turnouts requiring protection is assigned a value, and then the search continues for the next set of turnouts requiring protection. When a set of turnouts is in a protected state, the protection sign of the first set of signal machines adjacent to the turnout in the route direction is taken as the protection condition.
[0019] This disclosure includes at least the following beneficial effects: This open route processing system will prevent issues with route processing, improve the throughput capacity of station throat areas, and increase operational efficiency.
[0020] Other features and advantages of this disclosure will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the disclosure. The objects and other advantages of this disclosure may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the route protection. Figure 2 Schematic diagram of existing technology route protection uplink route Figure 1 ; Figure 3 Schematic diagram of the protection downline route for existing technology routes Figure 1 ; Figure 4 Schematic diagram of existing technology route protection uplink route Figure 2 ; Figure 5 Schematic diagram of the protection downline route for existing technology routes Figure 2 ; Figure 6 This is a schematic diagram of the path protection method according to an embodiment of the present disclosure; Figure 7 This is a schematic diagram of the downlink route for route protection in an embodiment of this disclosure. Figure 1 ; Figure 8 This is a schematic diagram of the uplink route for route protection in an embodiment of this disclosure. Figure 1 ; Figure 9 This is a schematic diagram of the uplink route for route protection in an embodiment of this disclosure. Figure 2 ; Figure 10 This is a schematic diagram of the downlink route for route protection in an embodiment of this disclosure. Figure 2 ; Figure 11 This is a schematic diagram of multiple route protection uplink routes in an embodiment of this disclosure. Figure 2 ; Figure 12This is a schematic diagram of multiple path protection downline paths in an embodiment of this disclosure. Figure 2 ; Figure 13 This is a schematic diagram of a route protection system according to an embodiment of the present disclosure. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0024] Terminology Explanation: Protective turnouts: To ensure the safety of trains and trainsets, protective turnouts must be inserted at certain station locations. These turnouts work in conjunction with certain conditions of the route to achieve safety protection. The protective turnouts are not located on the route being arranged. When arranging the route, they must be manually operated (either manually or automatically) and locked. Only after the circuit checks the turnout position (indicating correctness) and confirms it is locked in the designated protective position can the route achieve complete route locking and unlocking signals.
[0025] Protective signals are signals that ensure safe train operation at level crossings of railway lines within a section. Protective signals are interlocked and mutually restrictive; any one signal can only display a "allow passage" signal when all other signals are in a "no passage" state. Furthermore, once a signal is enabled, all other signals must be locked, and no two signals can simultaneously enable passage.
[0026] Over-limit insulation: When the distance from the insulation joint of a turnout section to the warning mark of the turnout is less than 3.5 meters, the insulation joint is considered to be over-limit insulation. When processing a route through the turnout section, the clearance conditions of the adjacent section must be checked.
[0027] Throat: The place where the two ends of the station's turnouts converge is the only way for various operations (train arrival and departure, locomotive movement, shunting and vehicle handling, etc.), thus becoming the throat area of the station.
[0028] like Figure 6 As shown, a route protection method includes: S601, the interlock is set with different protection signs, which include protection status and no protection status; S602, the interlocking process uses the following judgment based on the protection conditions of the route: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
[0029] The specific implementation details are as follows: Different protection flags are set for the interlocking system. The protection flag for turnouts is DCFHflag1, and for signals it is XHFHflag1. When the turnout is in position protection, DCFHflag1 = 0x55; when in reverse protection, DCFHflag1 = 0xaa; and when unprotected, DCFHflag1 = 0x00. When the signal is in protection mode, XHFHflag1 = 0x22; and when unprotected, XHFHflag1 = 0x00.
[0030] The computer interlocking system sets protective flags DCFHflag1, DCFHflag2, ... DCFHflagn for each set of turnouts and XHFHflag1, XHFHflag2, ... XHFHflagn for each signal. Interlocking processes protection conditions according to the route, prioritizing the use of turnouts as protection conditions. First, if DCFHflag1 is in a 0x00 state, the turnout is used as the protection condition. If DCFHflag1 is not in a 0x00 state, the signal is used to protect the XHFHflag1 flag, and the signal is used as the protection condition.
[0031] If multiple sets of turnouts or signals require protection along a route, the computer interlocking system prioritizes the turnouts used for protection based on the order in which the routes were processed. After a route is processed, the first set of turnouts requiring protection is assigned a value (DCFHflag1). The system then searches for the next set of turnouts requiring protection. If the DCFHflag2 flag of the next set is 0x00, the second set of turnouts is protected to the specified position. If the DCFHflag2 flag is not 0x00, the XHFHflag1 flag of the signal requiring protection is used. The system then searches for the third set of turnouts requiring protection. If the DCFHflag3 flag of the third set is 0x00, the third set of turnouts is used as the protection condition. If it is not 0x00, the XHFHflag2 flag of the second signal requiring protection is used. This process continues until all protection conditions required for the route are met.
[0032] The following explanation uses a train station as an example: like Figure 7As shown, the downline route starts from train A and proceeds to train IG: Press the starting ALA and terminal KILA to process the receiving route from A to IG. Lock turnout #2. At this time, the interlocking system checks that turnout #6's DCFHflag1 is in the 0x00 state, indicating that it is not being used by other routes. Therefore, this route uses turnout #6's DCFHflag1 flag and assigns it the value 0xaa. Turnout #6 is then protected to the reverse position. like Figure 8 As shown, the upline route connects train B to train IIIG: Press the start button BLA and the end button KIIILA to process the receiving route from B to IIIG. The route locks turnout #4. At this time, the interlocking first judges that the DCFHflag1 flag of turnout #6 is not in the 0x00 state, which proves that it has been used by other routes. Therefore, it continues to take XHFHflag1 and judges that XHFHflag1 is in the 0x00 state. It assigns the value of XHFHflag1 to 0x22 and uses signal K2 as the protection condition, requiring signal K2 to be in the prohibited opening state. Conversely, if the up route is processed first, followed by the down route, the steps are as follows: like Figure 9 As shown, the upline route connects train B to train IIIG: Press the start button BLA and the end button KIIILA to initiate the receiving route from B to IIIG. The route locks turnout #4. At this time, the interlocking system checks that turnout #6's DCFHflag1 is in a 0x00 state, indicating it is not being used by other routes. Therefore, this route uses turnout #6's DCFHflag1 flag, assigning it a value of 0x55. Turnout #6 is then protected to its designated position. like Figure 10 As shown, the downline route starts from train A and proceeds to train IG: Press the starting ALA and the terminal KILA to process the receiving route from A to IG. The route locks turnout #2. At this time, the interlocking first judges the protection DCFHflag1 flag of turnout #6. It is determined that the DCFHflag1 flag is not in a 0x00 state, which proves that it has been used by other routes. Therefore, it continues to judge the protection flag XHFHflag1 of the signal. It is determined that XHFHflag1 is in a 0x00 state. XHFHflag1 is assigned a value of 0x22, and the K2 signal is used as the protection condition. When there are multiple sets of switches and signals that need protection along the route, the operating procedures are as follows: like Figure 11 As shown, the upline route connects train B to train IIIG: Press the start button BLA and the end button KIIILA to initiate the receiving route from B to IIIG. The route locks turnouts #4 and #10. At this point, the interlocking system checks that turnout #6's DCFHflag1 is 0x00, indicating it's not being used by other routes. Therefore, this route uses turnout #6's DCFHflag1, assigning it a value of 0x55, and securing turnout #6. Next, it checks turnout #8's DCFHflag2, finding it to be 0x00, confirming it's not being used by other routes. It assigns turnout #8 a value of 0x55, securing turnout #6. like Figure 12 As shown, the downline route starts from train A and proceeds to train IG: Press the starting ALA and ending KILA to process the receiving route from A to IG. Lock turnout #2. At this point, the interlocking system first checks the DCFHflag1 protection flag of turnout #6. Since DCFHflag1 is not in a 0x00 state, it indicates that it has already been used by another route. Therefore, it continues to check the protection flag XHFHflag1 of the first signal group D2 for this route. XHFHflag1 is in a 0x00 state, so signal D2 is used as the protection condition. Next, it checks turnout #8, which needs protection. Since the DCFHflag2 flag of the second turnout is not in a 0x00 state, it indicates that it has already been used by another route. Therefore, it continues to check the protection flag XHFHflag2 of the second signal group K2 for this route. XHFHflag2 is in a 0x00 state, so signal K2 is used as the protection condition.
[0033] like Figure 13 As shown, a route protection system includes: Status setting unit 1301 and protection judgment unit 1302; The status setting unit 1301 is used to set different protection flags for the interlock, including protection status and no protection status; Protection judgment unit 1302 is used for interlocking protection conditions according to the route processing, and uses the following judgment: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
[0034] Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and such modifications or substitutions 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 disclosure.
Claims
1. A route protection method, characterized in that, The method includes: The interlocking system is equipped with different protection indicators, which include the protection status and the no-protection status. Interlocking is handled according to the protection conditions of the route, using the following judgment: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
2. The route protection method according to claim 1, characterized in that, Interlocking systems are equipped with different protective signs, including: turnout protection signs and signal protection signs; Among them, turnout protection signs include: protected state and unprotected state; the protection state of turnout protection signs includes: positioning protection state and reverse position protection state; signal protection signs include: protected state and unprotected state.
3. The route protection method according to claim 2, characterized in that, The interlocking system is equipped with different protective markings, including: The protection sign for turnouts is DCFHflag1, and the protection sign for signal lights is XHFHflag1; When the turnout is in the positioning protection state, DCFHflag1=0x55; when it is in the reverse position protection state, DCFHflag1=0xaa; when it is in the no-protection state, DCFHflag1=0x00. When the signal is in protected mode, XHFHflag1=0x22; when it is in unprotected mode, XHFHflag1=0x00.
4. The route protection method according to claim 3, characterized in that, Prioritize using turnouts as a protection condition. When a turnout is determined to be unprotected, use it as the protection condition. When a turnout is protected, use signal protection indicators and use the signal as the protection condition, including: First, determine if the turnout is in the 0x00 state, then use the turnout as the protection condition. When the turnout is not in the 0x00 state, use the signal protection sign and use the signal as the protection condition.
5. The route protection method according to claim 4, characterized in that, When the turnout is not in a 0x00 state, the signal protection sign is used, and the signal is taken as the protection condition, including: Locate the first set of signal protection signs immediately adjacent to the turnout on the route direction, and use the first set of signals as the protection condition.
6. The route protection method according to claim 1, characterized in that, When there are multiple sets of switches and signals that require protection along the route, each set should be assessed individually, including: If there are multiple sets of turnouts or signals that need protection in a route, the interlocking shall use the turnouts as protection conditions according to the order in which the routes were processed. After the route is processed, the first set of turnouts requiring protection is assigned a value, and then the search continues for the next set of turnouts requiring protection. When a set of turnouts is in a protected state, the protection sign of the first set of signal machines adjacent to the turnout in the route direction is taken as the protection condition.
7. A route protection system, characterized in that, include: Status setting unit and protection judgment unit; The status setting unit is used to set different protection flags for the interlock, including protection status and no protection status. The protection judgment unit is used to interlock and process protection conditions according to the route, using the following judgment: The turnout is given priority as the protection condition. When the turnout is determined to be in an unprotected state, the turnout is used as the protection condition. When the turnout is in a protected state, the signal protection sign is used and the signal is used as the protection condition. When there are multiple sets of turnouts and signals that need protection in the route, each set is judged one by one, and the turnouts are used as the protection condition first.
8. The route protection system according to claim 7, characterized in that, Interlocking systems are equipped with different protective signs, including: turnout protection signs and signal protection signs; Among them, turnout protection signs include: protected state and unprotected state; the protection state of turnout protection signs includes: positioning protection state and reverse position protection state; signal protection signs include: protected state and unprotected state.
9. A route protection system according to claim 8, characterized in that, The interlocking system is equipped with different protective markings, including: The protection sign for turnouts is DCFHflag1, and the protection sign for signal lights is XHFHflag1; When the turnout is in the positioning protection state, DCFHflag1=0x55; when it is in the reverse position protection state, DCFHflag1=0xaa; when it is in the no-protection state, DCFHflag1=0x00. When the signal is in protected mode, XHFHflag1=0x22; when it is in unprotected mode, XHFHflag1=0x00.
10. A route protection system according to claim 9, characterized in that, Prioritize using turnouts as a protection condition. When a turnout is determined to be unprotected, use it as the protection condition. When a turnout is protected, use signal protection indicators and use the signal as the protection condition, including: First, determine if the turnout is in the 0x00 state, then use the turnout as the protection condition. When the turnout is not in the 0x00 state, use the signal protection sign and use the signal as the protection condition.
11. A route protection system according to claim 10, characterized in that, When the turnout is not in a 0x00 state, the signal protection sign is used, and the signal is taken as the protection condition, including: Locate the first set of signal protection signs immediately adjacent to the turnout on the route direction, and use the first set of signals as the protection condition.
12. A route protection system according to claim 7, characterized in that, When there are multiple sets of switches and signals that require protection along the route, each set should be assessed individually, including: If there are multiple sets of turnouts or signals that need protection in a route, the interlocking shall use the turnouts as protection conditions according to the order in which the routes were processed. After the route is processed, the first set of turnouts requiring protection is assigned a value, and then the search continues for the next set of turnouts requiring protection. When a set of turnouts is in a protected state, the protection sign of the first set of signal machines adjacent to the turnout in the route direction is taken as the protection condition.