CN113942552A - Train screening method and device based on mobile block - Google Patents
Train screening method and device based on mobile block Download PDFInfo
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- CN113942552A CN113942552A CN202111154976.0A CN202111154976A CN113942552A CN 113942552 A CN113942552 A CN 113942552A CN 202111154976 A CN202111154976 A CN 202111154976A CN 113942552 A CN113942552 A CN 113942552A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
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Abstract
The invention provides a train screening method and device based on mobile blocking, wherein the method comprises the following steps: acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimated position and the over-reading distance measurement error; acquiring occupation state information on a target section; wherein, the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; and acquiring the protection direction of the protection signal machine of the section where the minimum safety rear end position is located. According to the train safety screening method, the train is safely screened through the minimum safety rear end position, the occupation state information of the target section and the protection direction, the problem that the train cannot accurately complete safety screening due to large train ranging errors is solved, and the train can normally track and run on the premise of ensuring safety, so that the running interval is shortened, and the running efficiency is improved.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a train screening method and device based on mobile blocking.
Background
In the mobile block train operation control system, a ground Radio Block Center (RBC) device calculates a mobile authorization for a train in a jurisdiction range according to state information of signal devices (such as signal machines, switches and track sections) sent by a computer interlocking system, and position and operation state information reported by the train.
The state of the outdoor equipment can be collected by the computer interlocking system through the interface frame and sent to the RBC, and a single track section is taken as an example: when the corresponding track relay is collected to be attracted, the computer interlocking system judges that the section has no vehicle occupation and is in an idle state; and when the corresponding track relay falls down, judging that the section is occupied by the vehicle and is in an occupied state.
RBC mainly realizes the operation and the tracking of the auxiliary train, and the premise that the train can track the operation is that the safety screening of the front end and the rear end of the train is finished, namely, the front and the rear of the train are excluded without hidden trains.
Because of the train speed measurement and distance measurement errors, the distance measurement errors exist between the maximum safe rear end position reported by the train and the real tail of the train, and the train cannot normally complete the tail screen.
Disclosure of Invention
The invention provides a train screening method and device based on moving block, which are used for solving the defect that a tail screen cannot pass due to large ranging error when RBC (radio backup control) is used for train screening in the prior art.
In a first aspect, the present invention provides a train screening method based on mobile blocking, including: acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimation position and the over-reading distance measurement error; acquiring occupation state information on a target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; acquiring the protection direction of a protection annunciator of a section where the minimum safety rear end position is located; and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
According to the train screening method based on the moving block provided by the invention, under the condition that the target section is in a station, the train is safely screened according to the occupation state information, the minimum safe rear end position and the protection direction, and the method comprises the following steps: calculating the idle distance between the minimum safe rear end position and the target section; under the condition that the first screening condition, the second screening condition and the third screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the first screening condition is that the target section is in a vehicle-occupation-free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the shortest train length; and the third screening condition is that the protection direction is consistent with the train running direction.
According to the train screening method based on the moving block provided by the invention, under the condition that the target section is located between stations, the protection direction carries out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction, and the method further comprises the following steps: under the condition that the first screening condition, the second screening condition, the third screening condition and the fourth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the fourth screening condition is that the minimum safe rear end is positioned in a suspicious section; the suspicious segment is a segment where the minimum safety rear end position is located when a suspicious tail end mark is added to the train.
According to the train screening method based on the moving block provided by the invention, under the condition that the target section is located between stations, the protection direction carries out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction, and the method further comprises the following steps: when the first screening condition, the second screening condition, the third screening condition and the fifth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the fifth screening condition is that the minimum safe rear end position is located behind the suspicious segment in the running direction of the train.
According to the train screening method based on the moving block provided by the invention, when the target section is located between stations, the train is safely screened according to the occupation state information, the minimum safe rear end position and the protection direction, and the method further comprises the following steps: when the first screening condition, the third screening condition, the sixth screening condition and the seventh screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the sixth screening condition is that the minimum safe rear end position is located in front of the suspicious section in the running direction of the train; and the seventh screening condition is that the idle distance is smaller than a second preset distance, and the second preset distance is determined by the longest slow suction time of the whole line and the highest speed limit of the train.
The invention provides a train screening method based on moving block, which comprises the following steps: the protection signal machine is a train signal machine.
In a second aspect, the present invention further provides a train screening device based on mobile blocking, including: the information acquisition module is used for acquiring the safety envelope of the train at the current moment so as to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the tail end measuring position of the train and the over-reading distance measuring error; the information acquisition module is also used for acquiring the occupation state information on the target section; wherein the target section is a section adjacent to the section with the minimum safe rear end position in the screening direction; the screening direction is opposite to the running direction of the train; the information acquisition module is also used for acquiring the protection direction of the protection annunciator of the section where the minimum safe rear end position is located; and the train screening module is used for carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
According to the train screening device based on the mobile block provided by the invention, the train screening module further comprises: a calculation unit and a condition judgment unit; the computing unit is used for computing the idle distance between the minimum safe rear end position and the target section; the condition judging unit is used for canceling the suspicious tail end mark for the train under the condition that the first screening condition, the second screening condition and the third screening condition are simultaneously met; wherein the first screening condition is that the target section is in a vehicle-occupation-free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the length of the shortest train; and the third screening condition is that the protection direction is consistent with the train running direction.
In a third aspect, the present invention provides an electronic device, comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor executes the program to implement the steps of the train screening method based on moving occlusion as described in any one of the above.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the moving occlusion based train screening method as described in any of the above.
According to the train screening method and device based on the moving block, the train is safely screened through the minimum safe rear end position, the occupied state information of the target section and the protection direction, the problem that the train cannot complete safe screening due to large train ranging errors is solved, the train can normally track and run on the premise of ensuring safety, the running interval is shortened, and the running efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a train screening method based on moving block provided by the invention;
FIG. 2 is a schematic illustration of a train safety envelope provided by the present invention;
FIG. 3 is a schematic diagram of a train end screening provided by the present invention;
FIG. 4 is one of the schematic diagrams provided by the present invention for the tail screen to fail due to ranging error;
FIG. 5 is a second schematic view of the present invention providing a tail screen that fails due to range errors;
FIG. 6 is a flow chart of the method for determining that the RBC provided by the present invention is a suspicious mark at the end of a train;
FIG. 7 is a second schematic diagram of train tail end screening provided by the present invention;
FIG. 8 is a schematic structural diagram of a train screening device based on moving block provided by the invention;
fig. 9 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
Fig. 1-9 illustrate a train screening method and apparatus based on moving occlusion according to an embodiment of the present invention.
Fig. 1 is a schematic flow chart of a train screening method based on moving occlusion according to the present invention, as shown in fig. 1, including but not limited to the following steps:
step 101: and acquiring the safety envelope of the train at the current moment so as to determine the minimum safe rear end position of the train according to the safety envelope.
Fig. 2 is a schematic diagram of a train safety envelope provided by the present invention, and as shown in fig. 2, the minimum safety rear end position in the present invention is determined according to the estimated position of the train tail and the over-read range error. The "estimated position of the train head" and the "estimated position of the train tail" are train positions calculated by the vehicle-mounted operation control system without considering the position correction error, and are positions where the train may be located. The 'over-reading distance measurement error' and the 'under-reading distance measurement error' are respectively possible distance measurement errors in front of and behind the train calculated by the vehicle-mounted operation control system.
The vehicle-mounted operation control system calculates the maximum safe front end, the minimum safe front end, the maximum safe rear end and the minimum safe rear end of the train according to the estimated position of the train head, the estimated position of the train tail, the over-reading distance measurement error and the under-reading distance measurement error. The range between the maximum safety front end and the minimum safety rear end is a train safety range, and the vehicle-mounted operation control system is required to ensure that the actual position of the train does not exceed the train safety range at the moment of calculating the train safety envelope.
It should be noted that, due to factors such as speed sensor errors, the over-read distance measurement error and the under-read distance measurement error will increase continuously as the errors accumulate during the running of the train, so the train safety envelope will increase continuously. After the vehicle-mounted operation control system receives the information of the ground position correcting equipment (such as a transponder), the vehicle-mounted operation control system corrects the position of the train to eliminate accumulated errors in the over-reading distance measuring errors and the under-reading distance measuring errors. Therefore, after the position is corrected, the safety envelope of the train is reduced. It can be seen that the train safety envelope varies with the travel of the train, and of course the minimum safe rear end position also varies.
Because the train safety envelope information comprises a plurality of position information of the maximum safety front end, the minimum safety front end, the maximum safety rear end and the minimum safety rear end of the train, the invention considers that the condition that the screening of the tail end of the train cannot pass exists when the maximum safety rear end is adopted to carry out safety screening on the train. The above case will be explained.
Fig. 3 is a schematic view of a train tail end screening method provided by the present invention, and as shown in fig. 3, the conditions for screening the train tail end by using the maximum safe rear end position are as follows:
(1) an adjacent section behind the maximum safe rear end position reported by the train is free (namely no vehicle is occupied);
(2) the distance between the position of the maximum safe rear end reported by the train and the end point of the section where the position is less than the length of the shortest train.
Because the train speed measurement and distance measurement have errors, the distance measurement error exists between the maximum safe rear end position reported by the train and the real tail of the train, the distance measurement error of the current freight railway train can reach 210m, and the following conditions that the tail screen does not pass easily occur in the process of the train tail screen:
fig. 4 is one of schematic diagrams in which the tail screen does not pass due to the ranging error, as shown in fig. 4, when the distance from the maximum safe rear end position reported by the train to the end point of the section where the position is located is less than the minimum train length, the real train tail still occupies the adjacent section behind the tail screen, the tail screen condition is not satisfied, and the tail screen does not pass.
Fig. 5 is a second schematic diagram of the tail screen failing to pass due to the distance measurement error, as shown in fig. 5, when the real tail of the train leaves the rear section clearly, the adjacent section at the rear is free, but the distance from the maximum safe rear end position to the end point of the section is greater than the shortest vehicle length, the tail screen condition is not satisfied, and the tail screen does not pass.
Because the defect that the train is subjected to tail end screening by adopting the maximum safe rear end is overcome, the train is subjected to safe screening by mainly adopting the minimum safe rear end position.
Step 102: and acquiring the occupation state information on the target section.
The target section in the invention is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is the direction opposite to the direction of travel of the train. Optionally, the segment in the present invention is a segment divided in advance according to a certain rule, for example, an interval between two protection semaphores is a segment. The occupied state includes a vehicle occupied state and a vehicle unoccupied state, i.e., an idle state.
Step 103: and acquiring the protection direction of the protection signal machine of the section where the minimum safety rear end position is located.
In order to more accurately perform safety screening on the train in this step, the protection direction of the protection signal machine in the section where the minimum safety rear end position is located is determined, and when the protection direction is consistent with the train traveling direction, the protection direction can be used as a necessary condition for train passing screening.
Step 104: and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
According to the train screening method provided by the invention, the problem that the train cannot complete the tail screen due to a large train ranging error is solved by acquiring the safety envelope of the train, the tail end screening of the train is completed on the premise of ensuring safety based on the minimum safety rear end position, and the operation efficiency is improved.
Based on the embodiment, the real tail of the train is located between the minimum safe rear position and the maximum safe rear position, the condition that the display of the signal machine is required to be taken as the standard when the railway technical management regulation requires that the train is not upgraded and the train cannot cross the signal machine when the signal machine in front is a forbidden signal is considered. Fig. 6 is a flow chart of the RBC determining method for removing the suspicious tail end mark from the train, as shown in fig. 6, the RBC comprehensively considers factors such as slow absorption characteristics of an interstation relay, a line limited operation speed, and train backward/backward movement, and screens the tail end of the train after the suspicious tail end mark appears on the train.
Fig. 7 is a second schematic diagram of train end screening provided by the present invention, and as shown in fig. 7, in a case that the target section is located in a station, the performing safety screening on the train according to the occupancy state information, the minimum safety rear end position, and the protection direction includes: calculating the idle distance between the minimum safe rear end position (hereinafter referred to as small rear) and the target section; under the condition that the first screening condition, the second screening condition and the third screening condition are simultaneously met, the suspicious tail end mark is cancelled for the train; the first screening condition is that the target section is in a vehicle occupation free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the shortest train length; the third screening condition is that the protection direction is consistent with the train running direction.
The RBC judges that the adjacent section meets the first screening condition of the train tail end screening when the target section is in an idle state, namely, no vehicle is occupied.
The distance from the small rear to the target section is the idle distance, and the idle distance is the distance from the rear end point of the section where the small rear is located. When the idle distance is smaller than the shortest train length L1, the RBC determines that the idle distance satisfies the second screening condition of train tail end screening of the present invention.
When the protection direction of the protection signal machine of the section where the small train is located is the same as the running direction of the train, the RBC judges that the protection direction meets the third screening condition of the train tail end screening.
And under the condition that the first screening condition, the second screening condition and the third screening condition are simultaneously met, the RBC cancels the tail end suspicious mark for the train.
According to the train screening method provided by the invention, when the train runs in the station, the minimum safe rear end position is used for replacing the maximum safe rear end position, and the train tail end is screened by combining the preset screening condition, so that the problem that the train cannot complete a tail screen due to a large train ranging error is avoided, and the normal tracking running of the train is realized on the premise of ensuring the safe running of the train in the station, thereby reducing the running interval and improving the running efficiency.
Based on the content in the foregoing embodiment, as an optional embodiment, when the target section is located between stations, the protection direction performs safety screening on the train according to the occupancy state information, the minimum safety rear end position, and the protection direction, and the method further includes: under the condition that the first screening condition, the second screening condition, the third screening condition and the fourth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the fourth screening condition is that the minimum safe rear end is positioned in the suspicious section; the suspicious segment is the segment where the minimum safe rear end position is located when the suspicious tail marker is added to the train.
Referring to the above embodiment, when it is determined that the first screening condition, the second screening condition, the third screening condition, and the fourth screening condition are simultaneously satisfied, canceling the suspicious tail end flag for the train includes: when the target section is in a state without vehicle occupation and between stations, and is still located in the section added with the tail-end suspicious mark after the target section is idle (namely in the suspicious section), the distance between the target section and the end point of the section where the target section is located after the target section is small is less than L1, and meanwhile, the protection direction of the protection signal machine of the section where the target section is located after the target section is small is the same as the running direction of the train, and the RBC cancels the tail-end suspicious mark for the train.
Optionally, the protection signal in the invention is a train signal.
According to the train screening method provided by the invention, the sections where the train is located after being small are judged, and the train tail end is screened by combining the preset screening condition, so that the problem that the train cannot complete a tail screen due to a large train distance measurement error is avoided, and the train can normally track and run on the premise that the target section is located between stations and the minimum safe rear end position is located in a suspicious section, so that the running interval is shortened, and the running efficiency is improved.
Based on the content in the foregoing embodiment, as an optional embodiment, when the target section is located between stations, the protection direction performs safety screening on the train according to the occupancy state information, the minimum safety rear end position, and the protection direction, and the method further includes: when the first screening condition, the second screening condition, the third screening condition and the fifth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the fifth screening condition is that the minimum safe rear end position is located behind the suspicious segment in the running direction of the train.
Referring to the above embodiment, when it is determined that the first screening condition, the second screening condition, the third screening condition, and the fifth screening condition are simultaneously satisfied, canceling the suspicious tail end flag for the train specifically includes: when the target section is in a state without vehicle occupation and is between stations, is located behind a section (namely a suspicious section) added with a rear suspicious mark after the target section is idle, and the distance between the target section and a rear end point of the section where the target section is located after the target section is small is smaller than L1, meanwhile, the protection signal machine of the section where the target section is located after the target section is small is a train signal machine, and the protection direction of the protection signal machine is the same as the running direction of the train, and the RBC cancels the rear suspicious mark for the train.
According to the train screening method provided by the invention, under the condition that the target section is positioned between stations, the section where the train is small is judged, and the train tail end is screened by combining the preset screening condition, so that the problem that the train cannot complete a tail screen due to a large train ranging error is avoided, the influence of factors of train backward movement/backward sliding on train screening is considered, the success rate of train screening is improved, and the running efficiency of the train is improved.
In addition, the trains running on the complex freight lines are long in marshalling, the rolling stock is connected by a coupler, and in order to prevent light train jumping, a slow suction relay is adopted in part of inter-station track relays, and the slow suction time is as long as 21 s. If the rail relay with slow suction is adopted, when the train actually leaves a clear rail section, the rail relay still falls down, the section state acquired by the computer interlocking system is still occupied, the rail relay is sucked up when the section is not occupied again by the train after the slow suction is finished, and the computer interlocking system can acquire the section idle state and report the section idle state to the RBC. If the existing train tail end screening method is adopted, due to the problem of slow suction, a train cannot normally complete tail screening between stations as soon as possible, a rear train cannot normally track the train tail running of the front train, the running interval is enlarged, and the running efficiency is reduced.
In order to solve the problem caused by the slow absorption, as an optional embodiment, when the target section is located between stations, the method performs safety screening on the train according to the occupancy state information, the minimum safety rear end position and the protection direction, and further includes: when the first screening condition, the third screening condition, the sixth screening condition and the seventh screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train; the sixth screening condition is that the minimum safe rear end position in the running direction of the train is positioned in front of the suspicious section; and the seventh screening condition is that the idle distance is smaller than a second preset distance, and the second preset distance is determined by the longest slow suction time of the whole line and the highest speed limit of the train.
Referring to the above embodiment, when it is determined that the first screening condition, the third screening condition, the sixth screening condition, and the seventh screening condition are simultaneously satisfied, canceling the suspicious tail end flag for the train specifically includes: when the target section is in a state without vehicle occupation and is between stations, and is located before and after a section (namely a suspicious section) added with a rear suspicious mark after the target section is idle, the distance between the target section and the rear end point of the section where the target section is located after the target section is small is smaller than a second preset distance L, and meanwhile, the protection signal machine of the section where the target section is located after the target section is small is a train signal machine, and the protection direction of the protection signal machine is the same as the running direction of the train, and the RBC cancels the rear suspicious mark for the train.
The train screening method provided by the invention comprehensively considers the slow absorption characteristic of the relay, the reported envelope position of the train, the limited running speed of the line and the shortest train length on the basis of the conventional train tail end screening method, provides the train tail end screening method suitable for the complex freight railway mobile block system, solves the problem that the train cannot complete tail end screening as soon as possible between stations due to slow absorption of the track relay in the mobile block system, and improves the efficiency and the success rate of the train tail screen.
As an alternative embodiment, the second preset distance L is calculated by:
L＝T×V
wherein L is a second preset distance, T is the longest slow suction time of the whole line, and V is the highest speed limit of the train. The longest whole-line slow suction time can be measured by a worker.
The method further limits the calculation method of the second preset distance, considers the influence on train screening caused by slow absorption of a track relay when the train runs between stations, and quantitatively calculates the second preset distance through the highest speed limit of the train to serve as one of conditions for judging whether the train screening is successful, so that the success rate of the train screening is greatly improved.
Fig. 8 is a schematic structural diagram of a train screening apparatus based on moving block provided by the present invention, and as shown in fig. 8, the apparatus includes: the system comprises an information acquisition module 801 and a train screening module 802.
The information acquisition module 801 is used for acquiring a safety envelope of the train at the current moment so as to determine the minimum safety rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the tail end measuring position of the train and the over-reading distance measuring error; the information acquisition module 801 is further configured to acquire occupation state information on the target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; the information acquisition module 801 is further configured to acquire a protection direction of a protection annunciator in a section where the minimum safe rear end position is located; and the train screening module 802 is configured to perform safety screening on the train according to the occupancy state information, the minimum safety rear end position and the protection direction.
Wherein, the train screening module 802 further comprises: a calculation unit and a condition judgment unit; the computing unit is used for computing the idle distance between the minimum safe rear end position and the target section; the condition judgment unit is used for canceling the suspicious tail end mark for the train under the condition that the first screening condition, the second screening condition and the third screening condition are simultaneously met; the first screening condition is that the target section is in a vehicle occupation free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the length of the shortest train; the third screening condition is that the protection direction is consistent with the train running direction.
According to the train screening method provided by the invention, when the train runs in the station, the minimum safe rear end position is used for replacing the maximum safe rear end position, and the train tail end is screened by combining the preset screening condition, so that the problem that the train cannot complete a tail screen due to a large train ranging error is avoided, and the normal tracking running of the train is realized on the premise of ensuring the safe running of the train in the station, thereby reducing the running interval and improving the running efficiency.
Fig. 9 is a schematic structural diagram of an electronic device provided in the present invention, and as shown in fig. 9, the electronic device may include: a processor (processor)910, a communication Interface (Communications Interface)920, a memory (memory)930, and a communication bus 940, wherein the processor 910, the communication Interface 920, and the memory 930 communicate with each other via the communication bus 940. Processor 910 may invoke logic instructions in memory 930 to perform a mobile occlusion based train screening method comprising: acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimation position and the over-reading distance measurement error; acquiring occupation state information on a target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; acquiring the protection direction of a protection annunciator of a section where the minimum safety rear end position is located; and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
Furthermore, the logic instructions in the memory 930 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the mobile occlusion-based train screening method provided by the above methods, the method comprising: acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimation position and the over-reading distance measurement error; acquiring occupation state information on a target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; acquiring the protection direction of a protection annunciator of a section where the minimum safety rear end position is located; and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
In yet another aspect, the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to perform the train screening method based on mobile blocking provided in the above embodiments, the method including: acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimation position and the over-reading distance measurement error; acquiring occupation state information on a target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train; acquiring the protection direction of a protection annunciator of a section where the minimum safety rear end position is located; and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A train screening method based on mobile blocking is characterized by comprising the following steps:
acquiring a safety envelope of the train at the current moment to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the train tail estimation position and the over-reading distance measurement error;
acquiring occupation state information on a target section; wherein the target section is an adjacent section of the section where the minimum safe rear end position is located in the screening direction; the screening direction is opposite to the running direction of the train;
acquiring the protection direction of a protection annunciator of a section where the minimum safety rear end position is located;
and carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
2. The mobile occlusion-based train screening method according to claim 1, wherein the safety screening of the train according to the occupancy status information, the minimum safety back end position and the protection direction in a case where the target zone is in a station comprises:
calculating the idle distance between the minimum safe rear end position and the target section;
under the condition that the first screening condition, the second screening condition and the third screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train;
the first screening condition is that the target section is in a vehicle-occupation-free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the shortest train length; and the third screening condition is that the protection direction is consistent with the train running direction.
3. The train screening method based on mobile blocking according to claim 2, wherein the protection direction performs safety screening on the train according to the occupancy state information, the minimum safety rear end position, and the protection direction in a case where the target section is between stations, further comprising:
under the condition that the first screening condition, the second screening condition, the third screening condition and the fourth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train;
the fourth screening condition is that the minimum safe rear end is positioned in a suspicious section; the suspicious segment is a segment where the minimum safety rear end position is located when a suspicious tail end mark is added to the train.
4. The train screening method based on mobile blocking according to claim 2, wherein the protection direction performs safety screening on the train according to the occupancy state information, the minimum safety rear end position, and the protection direction in a case where the target section is between stations, further comprising:
when the first screening condition, the second screening condition, the third screening condition and the fifth screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train;
the fifth screening condition is that the minimum safe rear end position is located behind the suspicious segment in the running direction of the train.
5. The train screening method based on mobile blocking according to claim 2, wherein in a case where the target section is between stations, the train is subjected to safety screening according to the occupancy state information, the minimum safety rear end position, and the protection direction, further comprising:
when the first screening condition, the third screening condition, the sixth screening condition and the seventh screening condition are determined to be met simultaneously, the suspicious tail end mark is cancelled for the train;
the sixth screening condition is that the minimum safe rear end position is located in front of the suspicious section in the running direction of the train;
and the seventh screening condition is that the idle distance is smaller than a second preset distance, and the second preset distance is determined by the longest slow suction time of the whole line and the highest speed limit of the train.
6. The train screening method based on mobile occlusion according to claim 5, wherein the second preset distance is calculated by the formula:
L＝T×V
wherein L is a second preset distance, T is the longest slow suction time of the whole line, and V is the highest speed limit of the train.
7. A train screening device based on moving block is characterized by comprising: the information acquisition module is used for acquiring the safety envelope of the train at the current moment so as to determine the minimum safe rear end position of the train according to the safety envelope; the minimum safe rear end position is determined according to the tail end measuring position of the train and the over-reading distance measuring error;
the information acquisition module is also used for acquiring the occupation state information on the target section; wherein the target section is a section adjacent to the section with the minimum safe rear end position in the screening direction; the screening direction is opposite to the running direction of the train;
the information acquisition module is also used for acquiring the protection direction of the protection annunciator of the section where the minimum safe rear end position is located;
and the train screening module is used for carrying out safety screening on the train according to the occupation state information, the minimum safety rear end position and the protection direction.
8. The mobile occlusive train screening device of claim 7, wherein the train screening module further comprises: a calculation unit and a condition judgment unit;
the computing unit is used for computing the idle distance between the minimum safe rear end position and the target section;
the condition judging unit is used for canceling the suspicious tail end mark for the train under the condition that the first screening condition, the second screening condition and the third screening condition are simultaneously met;
wherein the first screening condition is that the target section is in a vehicle-occupation-free state; the second screening condition is that the idle distance is smaller than a first preset distance, and the first preset distance is the length of the shortest train; and the third screening condition is that the protection direction is consistent with the train running direction.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the mobile occlusion based train screening method of any one of claims 1 to 6.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the mobile occlusion based train screening method of any of claims 1 to 6.
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