CN108128324B - Method for detecting train occupation axle counting of mobile block system - Google Patents
Method for detecting train occupation axle counting of mobile block system Download PDFInfo
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- CN108128324B CN108128324B CN201711405574.7A CN201711405574A CN108128324B CN 108128324 B CN108128324 B CN 108128324B CN 201711405574 A CN201711405574 A CN 201711405574A CN 108128324 B CN108128324 B CN 108128324B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L1/00—Devices along the route controlled by interaction with the vehicle or train
- B61L1/16—Devices for counting axles; Devices for counting vehicles
- B61L1/163—Detection devices
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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 embodiment of the invention provides a method for detecting an occupied axle of a train by a mobile block system. The method comprises the following steps: acquiring the bogie occupation state of each communication vehicle based on the number of bogies of the train and the position information of the communication vehicles; calculating the accumulated passing number of the bogies of the axle counting points in each direction and the current occupied number of the bogies in the axle counting section according to the axle number pulse sent by the axle counting points; judging whether a non-communication vehicle exists in the axle counting section by utilizing the current bogie occupation number of the axle counting section and the bogie occupation state of the communication vehicle; judging whether a train passes through the axle counting point according to the change condition of the accumulated passing number of the bogies of the axle counting point in each direction; and judging whether the train passing through the axle counting point is a non-communication vehicle or not based on the axle counting point passing through the train and the bogie occupation states of all communication vehicles. According to the embodiment of the invention, the number of the bogies passing through the axle counting point in different directions is counted, so that more abundant non-communication vehicle position states are obtained, and the train operation efficiency is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of rail transit, in particular to a method for detecting the occupancy of a train by a mobile block system through axle counting.
Background
A track axle counter is a sensor mounted on the rail web of a rail and functions to detect the number of axles of a train passing through a point (axle counting point) on a railway to check the occupancy of the train between two axle counting points (called an axle counting section, which may be divided into several axle counting points in a switch area). Fig. 1 is a system block diagram of a conventional train occupancy axle counting detection method provided by the prior art, as shown in fig. 1.
The axle counting sensor is installed on two sides of a rail, generally adopts an electromagnetic principle, and consists of a magnetic head, a transmitter and a receiver. The magnetic head has a transmitting coil and a receiving coil respectively mounted on both sides of the rail. The transmitter feeds a current with a high frequency to the transmitting coil of the magnetic head to generate an alternating magnetic field around the transmitting coil, and the alternating magnetic field is linked to the receiving coil of the magnetic head through different media such as air, steel rails, fasteners and the like to induce an alternating voltage. When the axle passes through the magnetic head, the shielding effect of the wheel and the diffusion effect of the wheel rim change the magnetic flux of the receiving coil which is linked to the magnetic head, and the induced voltage is obviously reduced. The receiver converts this varying induced voltage into an axle electrical pulse signal (representing the number of axles passing).
The aim of detecting the running direction of the train can be achieved by arranging the axle counting sensors in pairs. The signals of the two axle counting sensors are collected to an IO unit to form an axle counting point. And after the IO unit of the IO layer acquires the electric pulse signals which are sent by the group of sensors and represent the number of the axles, the number of the axles passing through the axle counting point and the direction information are sent to the axle counting host after processing. Fig. 2 is a schematic diagram of an axle counting point IO unit determining a train running direction according to the prior art, as shown in fig. 2.
The main axle counting machine is usually arranged at a station or an equipment gathering station. The axle counting host calculates the occupation condition of a certain axle counting section by comparing the number of axles and the direction information sent by adjacent axle counting points, and the judgment method can be summarized as follows: if the number of driving-out shafts is less than the number of driving-in shafts, the section is occupied; if the number of the outgoing axles is equal to the number of the incoming axles, the section is free. The axle counting host provides important information of the train section occupation state for the interlocking host of the signal system in a relay mode, and the signal system forms business logics such as train tracking, route handling, section unlocking and the like according to the occupation information. Fig. 3 is a schematic diagram of the spindle host determining the sector occupation according to the prior art, as shown in fig. 3.
The conventional train occupancy axle counting detection method is firstly applied to a fixed block signal system. The zone occupancy state is an important condition for fixed block route handling and signal opening. With the development of the technology, a mobile block technology represented by CBTC (Communication Based Train Control System) has become the mainstream technology of the signal System. The mobile block system uses safety positioning information which is automatically reported and updated in real time by a train (hereinafter referred to as a communication vehicle) as a main condition for judging the occupancy of the train and opening the subsequent train Movement Authority (MA), and the main function of the axle counting is to detect the section occupancy state of a fault train which cannot actively report the position and a non-equipped train (hereinafter referred to as a non-communication vehicle) which is not provided with a mobile block device under a mobile block backup mode. The train occupation detection method is completely the same as the method under the fixed block.
Since the non-communication vehicle cannot provide own position information externally, only the section occupation information of the non-communication vehicle can be provided by the existing train occupation axle counting detection method, so that the system operation efficiency under partial scenes needs to be improved. Fig. 4 is a schematic diagram of a mobile blocking system communication vehicle tracking non-communication vehicle provided in the prior art, and as shown in fig. 4, for a communication vehicle tracking a non-communication vehicle, the precise position of the non-communication vehicle cannot be determined, and the operation of the non-communication vehicle can only be tracked at a fixed blocking tracking interval.
Therefore, how to obtain more abundant non-communication vehicle position information and improve the train operation efficiency is an urgent issue to be solved at present.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method for detecting the train occupation axle counting of a mobile block system.
The method comprises the following steps:
acquiring the bogie occupation state corresponding to each communication vehicle based on the number of bogies corresponding to each train in the mobile block system and position information reported by the communication vehicles, wherein the trains comprise the communication vehicles and non-communication vehicles;
calculating the accumulated passing number of the bogies of each axle counting point in each direction and the current occupied number of the bogies of each axle counting section according to the axle number pulse sent by the axle counting point;
judging whether non-communication vehicles exist in each axle counting section or not by utilizing the current bogie occupation quantity of each axle counting section and the bogie occupation state corresponding to the communication vehicles;
judging whether a train passes through each axle counting point according to the change condition of the accumulated bogie passing number of each axle counting point in each direction;
and judging whether the train passing through the axle counting point is a non-communication train or not based on the axle counting point passing through the train and the occupied state of the bogie corresponding to each communication train.
Preferably, the method further comprises:
judging whether a non-communication vehicle except the non-communication vehicle to be upgraded does not exist in the axle counting section where the head of the non-communication vehicle to be upgraded is located according to the number of bogies corresponding to each train and the occupied number of current bogies corresponding to the axle counting section where the head of the non-communication vehicle to be upgraded is located, and upgrading the non-communication vehicle to be upgraded; or
And if judging that the front row of the to-be-upgraded non-communication vehicle starts to pass through the target axle counting point and no train except the to-be-upgraded non-communication vehicle passes through the target axle counting point during the period from the time when the head of the to-be-upgraded non-communication vehicle passes through the target axle counting point, upgrading the to-be-upgraded non-communication vehicle.
Preferably, the method further comprises:
judging whether a non-communication vehicle tracked by a controlled communication vehicle exists in a train passing through an axle counting point, the running direction of the train and an axle counting section or not, and if the non-communication vehicle and the controlled communication vehicle are not in the same axle counting section, taking the MA terminal point of the controlled communication vehicle as the starting point of the axle counting section where the non-communication vehicle is located;
and if judging whether a non-communication vehicle exists in the axle counting section where the head of the controlled communication vehicle is located according to the train passing through the axle counting point, the running direction of the train and the axle counting section, and the non-communication vehicle which is opposite to the running direction of the controlled communication vehicle enters, braking the controlled communication vehicle.
Preferably, the method further comprises:
and if the judgment result shows that the accumulated bogie passing number of the monitored non-communication vehicle at the direction axle counting point of the driving axle counting section is not equal to the accumulated bogie passing number of the direction axle counting point of the driving axle counting section, the monitored non-communication vehicle is disassembled.
Preferably, the obtaining of the bogie occupation state corresponding to each communication vehicle based on the number of bogies corresponding to each train and the position information reported by the communication vehicle includes:
the method comprises the steps of obtaining marshalling information of the trains in advance, wherein the marshalling information comprises vehicle types and marshalling quantity, and determining the quantity of bogies corresponding to each train according to the vehicle types and the marshalling quantity;
and acquiring the bogie occupation state corresponding to each communication vehicle according to the number of the bogies of each train and the position information reported by the communication vehicles, wherein the bogie occupation state comprises whether the bogie passes through an axle counting point and the occupation number in an axle counting section.
Preferably, the condition for judging that one bogie passes through the axle counting point comprises:
the number of the axle number pulses which should be generated by one bogie through the axle counting point is equal to the number of the axle number pulses which are actually generated; or
The number of axle number pulses generated by a bogie through the axle counting point should be greater than a first preset threshold value, and at least the number of generated axle number pulses is a second preset threshold value, and the next axle number pulse is not generated within a preset time interval.
Preferably, the calculating the accumulated passing number of the bogie and the current occupied number of the bogie of each axle counting section in each direction according to the axle number pulse sent by the axle counting point comprises:
counting the number of bogies passing through the axle counting points and the running direction according to the axle number pulse sent by the axle counting points to obtain the accumulated bogie passing number of each axle counting point in each direction;
obtaining the corresponding axle counting point of each axle counting section according to a formula
Calculating to obtain the current bogie occupation number of each axle counting section, wherein IkCumulative bogie passage number, O, for the k-th axle counting point in the direction of entry into the axle counting sectionkThe accumulated bogie passing number corresponding to the k-th axle counting point in the direction of exiting the axle counting section, and n is the number of the axle counting points forming the axle counting section.
Preferably, the determining whether there is a non-communication vehicle in each axle counting section by using the current bogie occupation number of each axle counting section and the bogie occupation state corresponding to the communication vehicle includes:
according to the formula
Calculating and obtaining the occupied quantity of bogies of all communication vehicles in the axle counting section, wherein m is the quantity of the communication vehicles in the axle counting section, and BlThe occupied number of bogies in the axle counting section is the first communication vehicle;
if S-T is greater than A, a non-communication vehicle exists in the axle counting section; wherein A is a preset allowance.
Preferably, the determining whether a train passes through each axle counting point according to the change of the accumulated bogie passing number of each axle counting point in each direction includes:
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to IkWhen the value is increased, the k-th axle counting point is passed by the train in the direction of the driving axle counting section;
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to OkAnd if the value is increased, the k-th axle counting point passes through the train in the direction of the outgoing axle counting section.
Preferably, the determining whether the train passing through the axle counting point is a non-communication train based on the axle counting point through which the train passes and the bogie occupation states corresponding to the communication trains includes:
the method comprises the steps of obtaining all the axle counting points through which trains pass, obtaining the communication vehicles passing through the axle counting points, and judging that the trains passing through the axle counting points are non-communication vehicles if the obtained communication vehicles passing through the axle counting points do not contain the trains passing through the axle counting points.
According to the train occupation axle counting detection method of the mobile block system, provided by the embodiment of the invention, through the number of bogies of each train, the occupation state of the bogies of communication vehicles, the accumulated number of passing bogies of each axle counting point in each direction and the current occupation number of the bogies of each axle counting section, whether non-communication vehicles exist in the axle counting section or not can be judged, the number of the bogies passing the axle counting point in different directions can be counted, more abundant non-communication vehicle position states are obtained, and the train operation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in 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 system diagram of a conventional train occupancy axle counting detection method provided by the prior art;
FIG. 2 is a schematic diagram of an axle counting IO unit determining a train running direction according to the prior art;
FIG. 3 is a schematic diagram of a spindle host computer provided in the prior art for determining zone occupation;
4(a), (b), (c) and (d) are schematic diagrams of 4 mobile block system communication vehicles tracking non-communication vehicles provided by the prior art;
fig. 5 is a schematic flow chart of a method for detecting an occupied axle count of a train in a mobile block system according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a method for detecting an occupied axle of a train in a mobile block system according to another embodiment of the present invention;
fig. 7(a), (b), (c), (d) and (e) are schematic diagrams of 5 kinds of non-communication vehicle upgrading processes provided by the embodiment of the invention;
fig. 8(a), (b) and (c) are schematic views illustrating intrusion detection and protection of 3 non-communication vehicles according to an embodiment of the present invention;
fig. 9(a), (b) and (c) are schematic diagrams of 3 kinds of train integrity checks provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, 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.
Fig. 5 is a schematic flow chart of a method for detecting an occupancy axle count of a train in a mobile block system according to an embodiment of the present invention, where as shown in fig. 5, the method includes:
step 501: acquiring the bogie occupation state corresponding to each communication vehicle based on the number of bogies corresponding to each train in the mobile block system and position information reported by the communication vehicles, wherein the trains comprise the communication vehicles and non-communication vehicles;
specifically, in the mobile block system, each train has a corresponding number of bogies according to different vehicle types and marshalling numbers, so that the number of bogies corresponding to each train can be obtained in advance, the communication vehicle has a state of accurate positioning and good integrity, and information corresponding to the vehicle, such as position information and the like, can be reported in real time, and therefore, the occupation states of all bogies of the communication vehicle can be accurately judged according to the number of bogies corresponding to each train and the position information reported by the communication vehicle. It should be noted that the above train includes a communicating vehicle and a non-communicating vehicle.
Step 502: calculating the accumulated passing number of the bogies of each axle counting point in each direction and the current occupied number of the bogies of each axle counting section according to the axle number pulse sent by the axle counting point;
specifically, when the bogie on the train passes through the axle counting point, the axle counting point generates axle number pulses, and the accumulated bogie passing number of each axle counting point in each direction can be calculated according to the axle number pulses. It should be noted that, taking fig. 2 as an example, the axle counting a and the axle counting B form an axle counting point, when the train passes through the axle counting point from left to right, the axle counting a sends out a pulse first, and the axle counting B sends out a pulse later, so that the direction that the bogie passes through the axle counting point can be determined as from left to right according to the axle counting pulse; correspondingly, if the train passes through the axle counting point from right to left, the axle counting B firstly sends out pulses, and then sends out pulses, and at the moment, the direction that the bogie passes through the axle counting point can be determined to be from right to left according to the axle counting pulses.
The axle counting section is generally composed of two axle counting points, the turnout area is composed of more than two axle counting points, and the accumulated bogie passing number of the train in each direction can be obtained according to the axle number pulse, so that the bogie number of the train entering the axle counting section and the bogie number of the train exiting the axle counting section can be obtained. The current bogie occupation number of the axle counting section can be obtained through the number of bogies running into the axle counting section and the number of bogies running out of the axle counting section.
Step 503: judging whether non-communication vehicles exist in each axle counting section or not by utilizing the current bogie occupation quantity of each axle counting section and the bogie occupation state corresponding to the communication vehicles;
specifically, the axle counting section in which the bogie of the communication vehicle is located can be obtained according to the position information reported by the communication vehicle, so that after the current bogie occupation number of each axle counting section is obtained through calculation, whether a non-communication vehicle exists in each axle counting section can be obtained according to the bogie occupation state corresponding to the communication vehicle. For example: if the number of the current bogies occupied in one axle counting section is 5, one communication vehicle is in the axle counting section, and the number of the bogies of the communication vehicle is 2, it indicates that 3 bogies are not communication vehicles, and it can be known that a non-communication vehicle exists in the axle counting section.
Step 504: judging whether a train passes through each axle counting point according to the change condition of the accumulated bogie passing number of each axle counting point in each direction;
specifically, according to whether the accumulated bogie passing number of the axle counting point in each direction is increased or decreased, if the accumulated bogie passing number of the axle counting point in a certain direction is changing, it is indicated that a train passes through the axle counting point, and therefore, whether the train passes through each axle counting point currently can be judged according to the change situation of the accumulated bogie passing number.
Step 505: and judging whether the train passing through the axle counting point is a non-communication train or not based on the axle counting point passing through the train and the occupied state of the bogie corresponding to each communication train.
Specifically, the occupied state of the bogie corresponding to the communication vehicle includes whether the communication vehicle passes through a certain axle counting point, so that all the axle counting points reported that the train passes through are obtained, and if the train passes through one axle counting point but the communication vehicle does not pass through the axle counting point, the train passing through the axle counting point is indicated as a non-communication vehicle.
According to the embodiment of the invention, through the number of bogies of each train, the occupied state of the bogies of the communication train, the accumulated passing number of bogies of each axle counting point in each direction and the current occupied number of bogies of each axle counting section, whether a non-communication train exists in the axle counting section can be judged, the number of bogies passing through the axle counting point in different directions can be counted, more abundant non-communication train position states are obtained, and the train operation efficiency is improved.
Fig. 6 is a schematic flow chart of a train occupancy axle counting detection method of a mobile blocking system according to another embodiment of the present invention, as shown in fig. 6, the axle counting point 1 includes an axle counting a and an axle counting B, the axle counting point 2 includes an axle counting C and an axle counting D, the axle counting a and the axle counting B transmit the sensed axle number pulse to the IO unit 1, the axle counting C and the axle counting D transmit the sensed axle number pulse to the IO unit 2, the IO unit 1 and the IO unit 2 transmit the axle number pulse and the direction of the corresponding axle counting point to the axle counting host, after the axle counting host collects the axle number pulse passing through the axle counting point in different directions, calculating according to step 502 of the embodiment of the invention to obtain the accumulated passing number of the bogies of each axle counting point in each direction and the current occupied number of the bogies of each axle counting section, and sending the calculation result to the area controller, while still transmitting the zone occupancy status for each axle counting zone to the interlock system in a conventional manner.
Each train of communication vehicles reports the train formation and the positions of the head and the tail of the train of the vehicle to the area controller in real time, and the area controller performs calculation according to the step 501 of the embodiment of the invention to obtain the occupation state of the bogie corresponding to each communication vehicle.
The zone controller completes the calculation of step 503, step 504 and step 505 according to the information sent by the vehicle-mounted system and the axle counting host.
The basic logic of the area controller for calculating the movement authorization for the communication vehicle is unchanged, and the area controller still calculates the states of the position and the integrity state reported in real time by the train, the zone occupation reported by the interlocking system and the like.
On the basis of the above embodiment, the method further includes:
judging whether a non-communication vehicle except the non-communication vehicle to be upgraded does not exist in the axle counting section where the head of the non-communication vehicle to be upgraded is located according to the number of bogies corresponding to each train and the occupied number of current bogies corresponding to the axle counting section where the head of the non-communication vehicle to be upgraded is located, and upgrading the non-communication vehicle to be upgraded; or
And if judging that the front row of the to-be-upgraded non-communication vehicle starts to pass through the target axle counting point and no train except the to-be-upgraded non-communication vehicle passes through the target axle counting point during the period from the time when the head of the to-be-upgraded non-communication vehicle passes through the target axle counting point, upgrading the to-be-upgraded non-communication vehicle.
Specifically, fig. 7 is a schematic diagram of an upgrading process of a non-communication vehicle according to an embodiment of the present invention, as shown in fig. 7, fig. 7(a) is a schematic diagram of a fleet of communication vehicles tracking and operating at moving block intervals, 3 communication vehicles normally operate, fig. 7(b) is a schematic diagram of a state in which one train fails and becomes a non-communication vehicle, at which time, the following train brakes and stops, and fig. 7(c) is a schematic diagram of a state in the process of operating a train.
After the method provided by the embodiment of the invention is adopted, fig. 7(d) is an upgradable running state diagram provided by the embodiment of the invention, if the non-communication vehicle can be accurately positioned and has good integrity, the non-communication vehicle can be used as a non-communication vehicle to be upgraded, and according to the number of bogies corresponding to each train and the current number of occupied bogies corresponding to the axle counting section where the locomotive of the non-communication vehicle to be upgraded is located, whether other non-communication vehicles exist in the axle counting section where the locomotive of the non-communication vehicle to be upgraded is judged and known, and the non-communication vehicle can be directly upgraded. And tracking a movement authorization terminal corresponding to the communication vehicle of the non-communication vehicle to be upgraded as a starting point position of the axle counting section where the non-communication vehicle to be upgraded is located. Fig. 7(e) is a scalable operation state diagram provided by another embodiment of the present invention, which is from when a front train of communication vehicles completely passes through a certain axle counting point (the axle counting point cannot pass through a turnout area, and the axle counting point is used as a target axle counting point), until a head of a non-communication vehicle to be upgraded passes through the target axle counting point, no other train passes through the target axle counting point, and the non-communication vehicle to be upgraded can be directly upgraded into a communication vehicle.
According to the embodiment of the invention, the number of the bogies corresponding to each train and the current number of the bogies occupied by the axle counting section corresponding to the head of the non-communication vehicle to be upgraded are judged to know that no other non-communication vehicle exists in the axle counting section where the head of the non-communication vehicle to be upgraded is located, so that the upgrading can be carried out, and the movement authorization for tracking the communication vehicle of the non-communication vehicle to be upgraded can be prolonged to the starting position of the axle counting section where the non-communication vehicle is located, so that the time required by upgrading the non-communication vehicle is shortened, and the influence on the operation of the communication vehicle running behind is reduced.
On the basis of the above embodiment, the method further includes:
judging whether a non-communication vehicle tracked by a controlled communication vehicle exists in a train passing through an axle counting point, the running direction of the train and an axle counting section or not, and if the non-communication vehicle and the controlled communication vehicle are not in the same axle counting section, taking the MA terminal point of the controlled communication vehicle as the starting point of the axle counting section where the non-communication vehicle is located;
and if judging whether a non-communication vehicle exists in the axle counting section where the head of the controlled communication vehicle is located according to the train passing through the axle counting point, the running direction of the train and the axle counting section, and the non-communication vehicle which is opposite to the running direction of the controlled communication vehicle enters, braking the controlled communication vehicle.
Specifically, fig. 8 is a schematic view illustrating intrusion detection and protection of a non-communication vehicle according to an embodiment of the present invention, as shown in fig. 8, in the prior art, if two rows of vehicles occupy two adjacent axle counting sections simultaneously and a front vehicle is a non-communication vehicle, the position of the front vehicle cannot be determined for a rear vehicle, and there is a risk of collision with the front vehicle when the rear vehicle continues to move forward. Therefore, when the communicating vehicle tracks the non-communicating vehicle, the movement authorization terminal must be separated from the occupied section of the non-communicating vehicle by a free section, as shown in fig. 8 (a).
According to the embodiment of the invention, the non-communication vehicle tracked by the controlled communication vehicle can be judged and known according to the train passing through the axle counting point, the train running direction and whether the non-communication vehicle exists in the axle counting section. The MA endpoint of the communication vehicle can extend to the starting point of the occupied zone of the non-communication vehicle without separating a free zone, and it should be noted that when the MA endpoint of the communication vehicle is arranged at the starting point of the occupied zone of the non-communication vehicle, a safe distance is kept with the starting point, as shown in fig. 8 (b). If it is detected that a non-communication vehicle reversely enters the axle counting section where the head of the controlled communication vehicle is located according to the train passing through the axle counting point, the train running direction and whether the non-communication vehicle exists in the axle counting section, the controlled communication vehicle can be immediately braked and stopped and an alarm is given, as shown in fig. 8 (c). Since the non-communication train generally refers to a fault train, a sleeping or avoidance train, a shunting machine, an engineering vehicle, and other vehicles which cannot operate in a mobile blocking mode on a line, the application of this function is very wide, including but not limited to the following scenarios:
detecting the runaway of the parked train;
the train is disassembled, and a plurality of vehicles are left on the line, so that the driving safety of the rear vehicle is protected;
when the shunting machine/engineering vehicle runs on the line, the running safety of the operating train is protected.
The embodiment of the invention can realize the determination of the movement authorization terminal of the controlled communication vehicle and the judgment of whether the non-communication vehicle drives in from the opposite direction in the axle counting section where the head of the controlled communication vehicle is positioned by judging the position of the non-communication vehicle, and immediately implement emergency braking on the controlled communication vehicle if the non-communication vehicle drives in from the opposite direction, thereby improving the efficiency and the safety of train operation.
On the basis of the above embodiment, the method further includes:
and if the judgment result shows that the accumulated bogie passing number of the monitored non-communication vehicle at the direction axle counting point of the driving axle counting section is not equal to the accumulated bogie passing number of the direction axle counting point of the driving axle counting section, the monitored non-communication vehicle is disassembled.
Specifically, fig. 9 is a schematic diagram of checking integrity of a train according to an embodiment of the present invention, as shown in fig. 9, in the prior art, fig. 9(a) is a schematic diagram of operating a non-communication train, when a communication train tracks the non-communication train, the communication train does not enter a section where the non-communication train is located, and a non-communication train formation is known, detection of integrity of the train is mainly implemented by detecting, by an onboard device, on/off of a head-to-tail through cable, air pressure of a brake air line, and the like, and the non-communication train can only be determined manually by a driver.
Fig. 9(b) is a schematic diagram of the axle counting points through which the non-communication vehicle passes, in the embodiment of the present invention, since the cumulative passing number of bogies in the directions of the axle counting points can be calculated, when the non-communication vehicle passes through the axle counting points, the passing bogies are counted, after the non-communication vehicle is judged to pass through the axle counting points according to the standard vehicle length, whether the number of bogies passing through the axle counting points is consistent with the standard number of the consist is judged by comparing the cumulative passing number of bogies of the monitored non-communication vehicle at the axle counting points in the incoming axle counting section and the cumulative passing number of bogies at the axle counting points in the outgoing axle counting section, and if the number is less than the standard number, the train is judged to be disassembled, as shown in fig. 9(c), at this time, an alarm or a safety braking measure can be taken for the vehicle and the following tracked train, thereby implementing the train integrity checking function.
According to the embodiment of the invention, whether the monitored non-communication vehicle is disassembled is judged through the accumulated bogie number of the axle counting points in each direction without manual judgment, so that the workload of workers is reduced, and the detection efficiency of whether the non-communication vehicle is disassembled is improved.
The system architecture and function allocation provided by the embodiment of the invention are only one feasible scheme for applying the method of the invention to the mobile block system, and the architecture and function allocation of the axle counting host and each subsystem of the mobile block can be practically adjusted at will according to requirements.
On the basis of the above embodiment, obtaining the bogie occupation state corresponding to each communication vehicle based on the number of bogies corresponding to each train and the position information reported by the communication vehicle includes:
the method comprises the steps of obtaining marshalling information of the trains in advance, wherein the marshalling information comprises vehicle types and marshalling quantity, and determining the quantity of bogies corresponding to each train according to the vehicle types and the marshalling quantity;
and acquiring the bogie occupation state corresponding to each communication vehicle according to the number of the bogies of each train and the position information reported by the communication vehicles, wherein the bogie occupation state comprises whether the bogie passes through an axle counting point and the occupation number in an axle counting section.
Specifically, the train formation information including the vehicle type and the number of trains is obtained in advance according to a default configuration or a driver input manner, and the number of bogies of the train formation is calculated according to the vehicle type and the number of trains of each train.
According to the accurate positioning and good integrity state of the communication vehicle, the position information can be reported, and the zone controller can accurately judge the zone occupation states of all bogies of the communication vehicle according to the position information reported by the communication vehicle, including whether the train passes through the axle counting point or not and the current occupation number of all bogies of the train on each axle counting zone.
According to the embodiment of the invention, the passing condition of the bogie of each communication vehicle at the axle counting point and the occupied number of the axle counting sections can be obtained through the position information reported by the communication vehicles, so that a basis is provided for the state of the non-communication vehicle.
On the basis of the above embodiment, the condition for judging that one bogie passes through the axle counting point comprises:
the number of the axle number pulses which should be generated by one bogie through the axle counting point is equal to the number of the axle number pulses which are actually generated; or
The number of axle number pulses generated by a bogie through the axle counting point should be greater than a first preset threshold value, and at least the number of generated axle number pulses is a second preset threshold value, and the next axle number pulse is not generated within a preset time interval.
Specifically, the number of axle number pulses generated by a bogie passing through the axle counting point should be greater than or equal to 2, but is typically 2. Therefore, if the number of axle number pulses generated by one bogie when passing through the axle counting point is 2, and the number of actually generated axle number pulses is exactly 2, it is interpreted that one bogie passes through the axle counting point. Assuming that the first preset threshold is 3, the second preset threshold is 2, that is, one bogie should generate 3 axle number pulses, the train actually generates 2 when passing through the axle counting point, and the time interval from the first axle number pulse to the second axle number pulse of the bogie is P, if the third axle number pulse is not received in the time of P + Q, the bogie is considered to have completely passed, it should be noted that the value of Q depends on all possible bogie models on the line and the maximum deceleration of the train.
According to the embodiment of the invention, the accumulated passing number of the axle counting points in each direction is obtained by the information of the axle counting points of the bogie of the train, so that the occupied number of the bogie in the axle counting section is obtained, the occupied idle state of the axle counting section can be identified, the occupied number of the bogie in different directions can be technically calculated, and by utilizing the information, a mobile block system can calculate richer non-communication vehicle position states, and the system availability and the operation efficiency in partial scenes are improved.
On the basis of the above embodiment, the calculating, according to the axle number pulse sent by the axle counting point, the accumulated passing number of bogies in each direction of each axle counting point and the current occupied number of bogies in each axle counting section includes:
counting the number of bogies passing through the axle counting points and the running direction according to the axle number pulse sent by the axle counting points to obtain the accumulated bogie passing number of each axle counting point in each direction;
obtaining the corresponding axle counting point of each axle counting section according to a formula
Calculating to obtain the current bogie occupation number of each axle counting section, wherein IkCumulative bogie passage number, O, for the k-th axle counting point in the direction of entry into the axle counting sectionkThe accumulated bogie passing number corresponding to the k-th axle counting point in the direction of exiting the axle counting section, and n is the number of the axle counting points forming the axle counting section.
Specifically, the number and the direction of the bogies passing through the axle counting point are counted according to the axle number pulse sent by the axle counting point, and the accumulated bogie passing number of each axle counting point in each direction is obtained.
And calculating the total occupied number of the current bogie in the axle counting section by obtaining the accumulated passing number of the bogie in each direction of all axle counting points corresponding to one axle counting section. The n axle counting points are designed to divide a section of line into an independent axle counting section (generally, the axle counting section n is 2, and the turnout area n is more than 2). The cumulative passing number of the bogies driving into the axle counting section from each axle counting point is respectively I1、I2、……、InThe cumulative number of passes of the bogie from each counting point to the counting section is O1、O2、……、OnCalculating the total occupied number of the current bogie of the axle counting section according to the formula (1):
wherein, IkCumulative bogie passage number, O, for the k-th axle counting point in the direction of entry into the axle counting sectionkThe accumulated bogie passing number corresponding to the k-th axle counting point in the direction of exiting the axle counting section, and n is the number of the axle counting points forming the axle counting section. And subtracting the accumulated bogie occupation number of all the axle counting points which are driven out of the remembering section from the accumulated bogie occupation number of all the axle counting points which are driven into the axle counting section through the corresponding axle counting section, so as to calculate the occupation amount of the axle counting section.
According to the embodiment of the invention, a calculation basis is provided for obtaining the passing condition of the non-communication vehicle at the axle counting point and the occupation condition of the axle counting section according to the accumulated passing number of the bogies in all directions of the axle counting point and the current occupation number of the bogies in each axle counting section.
On the basis of the above embodiment, the determining whether there is a non-communication vehicle in each axle counting section by using the current bogie occupation number of each axle counting section and the bogie occupation state corresponding to the communication vehicle includes:
according to the formula
Calculating and obtaining the occupied quantity of bogies of all communication vehicles in the axle counting section, wherein m is the quantity of the communication vehicles in the axle counting section, and BlThe occupied number of bogies in the axle counting section is the first communication vehicle;
if S-T is greater than A, a non-communication vehicle exists in the axle counting section; wherein A is a preset allowance.
Specifically, it is assumed that m communication vehicles are currently running in the axle counting section, and the number of bogies currently occupied by the ith train in the axle counting section is BiAnd (3) calculating the total bogie occupation number of the communication vehicle in the axle counting section according to the formula (2):
and if S-T is larger than A, judging that the non-communication vehicle exists in the section, otherwise, judging that the non-communication vehicle does not exist, wherein A is a preset allowance set by considering the positioning error of the communication vehicle.
According to the embodiment of the invention, whether a non-communication vehicle exists in the axle counting section can be judged according to the occupied number of the current bogie in the axle counting section and the occupied number of the communication vehicle in the axle counting section, and if the non-communication vehicle exists, the movement authorization control can be carried out on the communication vehicle for tracking the non-communication vehicle.
On the basis of the above embodiment, the determining whether a train passes through each axle counting point according to the change of the accumulated bogie passing number of each axle counting point in each direction includes:
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to IkWhen the value is increased, the k-th axle counting point is passed by the train in the direction of the driving axle counting section;
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to OkAnd if the value is increased, the k-th axle counting point passes through the train in the direction of the outgoing axle counting section.
Specifically, the accumulated bogie passing number of each axle counting point in each direction is periodically collected, and the passing state of the train can be judged by comparing the change of the accumulated bogie passing number of the axle counting points because only one train can pass through one axle counting point at the same time. For the kth axle counting point of a certain axle counting section: if in unit time IkIf the number of the train passing through the axle counting point is increased, judging that the train passes through the axle counting point in the direction of the driving axle counting section; if O is in the unit timekAnd if the value is increased, judging that the train passes through the axle counting point in the direction of the outgoing axle counting section.
According to the embodiment of the invention, whether a train passes through the axle counting point is judged according to the accumulated bogie passing number of the axle counting point in each direction, so that richer position information of a non-communication vehicle is obtained.
On the basis of the above embodiment, the determining whether the train passing through the axle counting point is a non-communication train based on the axle counting point through which the train passes and the bogie occupation states corresponding to the communication trains includes:
the method comprises the steps of obtaining all the axle counting points through which trains pass, obtaining the communication vehicles passing through the axle counting points, and judging that the trains passing through the axle counting points are non-communication vehicles if the obtained communication vehicles passing through the axle counting points do not contain the trains passing through the axle counting points.
Specifically, all the axle counting points reporting that the vehicle passes through and all the communication vehicles reporting that the vehicle passes through the axle counting points are checked, and if one axle counting point passes through but no communication vehicle in any row passes through the axle counting point, the axle counting point is judged to pass through a non-communication vehicle in the row.
According to the embodiment of the invention, whether the train passing through the axle counting point is a non-communication train is judged, so that more abundant non-communication train position information can be obtained, and the train operation efficiency is improved.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments 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 method for detecting the occupancy of a train by a mobile block system is characterized by comprising the following steps:
acquiring the bogie occupation state corresponding to each communication vehicle based on the number of bogies corresponding to each train in the mobile block system and position information reported by the communication vehicles, wherein the trains comprise the communication vehicles and non-communication vehicles;
calculating the accumulated passing number of the bogies of each axle counting point in each direction and the current occupied number of the bogies of each axle counting section according to the axle number pulse sent by the axle counting point;
judging whether non-communication vehicles exist in each axle counting section or not by utilizing the current bogie occupation quantity of each axle counting section and the bogie occupation state corresponding to the communication vehicles;
judging whether a train passes through each axle counting point according to the change condition of the accumulated bogie passing number of each axle counting point in each direction;
and judging whether the train passing through the axle counting point is a non-communication train or not based on the axle counting point passing through the train and the occupied state of the bogie corresponding to each communication train.
2. The method of claim 1, further comprising:
judging whether a non-communication vehicle except the non-communication vehicle to be upgraded does not exist in the axle counting section where the head of the non-communication vehicle to be upgraded is located according to the number of bogies corresponding to each train and the occupied number of current bogies corresponding to the axle counting section where the head of the non-communication vehicle to be upgraded is located, and upgrading the non-communication vehicle to be upgraded into a communication vehicle; or
If the fact that the front row of the to-be-upgraded non-communication vehicle passes through the target axle counting point is judged, and no train except the to-be-upgraded non-communication vehicle passes through the target axle counting point during the period from the time when the front head of the to-be-upgraded non-communication vehicle passes through the target axle counting point, the to-be-upgraded non-communication vehicle is upgraded into the communication vehicle.
3. The method of claim 1, further comprising:
judging whether a non-communication vehicle tracked by a controlled communication vehicle exists in a train passing through an axle counting point, the running direction of the train and an axle counting section or not, and if the non-communication vehicle and the controlled communication vehicle are not in the same axle counting section, taking the MA terminal point of the controlled communication vehicle as the starting point of the axle counting section where the non-communication vehicle is located;
and if judging whether a non-communication vehicle exists in the axle counting section where the head of the controlled communication vehicle is located according to the train passing through the axle counting point, the running direction of the train and the axle counting section, and the non-communication vehicle which is opposite to the running direction of the controlled communication vehicle enters, braking the controlled communication vehicle.
4. The method of claim 1, further comprising:
and if the judgment result shows that the accumulated bogie passing number of the monitored non-communication vehicle at the direction axle counting point of the driving axle counting section is not equal to the accumulated bogie passing number of the direction axle counting point of the driving axle counting section, the monitored non-communication vehicle is disassembled.
5. The method of claim 1, wherein the obtaining of the bogie occupation status corresponding to each communication vehicle based on the number of bogies corresponding to each train and the position information reported by the communication vehicle comprises:
the method comprises the steps of obtaining marshalling information of the trains in advance, wherein the marshalling information comprises vehicle types and marshalling quantity, and determining the quantity of bogies corresponding to each train according to the vehicle types and the marshalling quantity;
and acquiring the bogie occupation state corresponding to each communication vehicle according to the number of the bogies of each train and the position information reported by the communication vehicles, wherein the bogie occupation state comprises whether the bogie passes through an axle counting point and the occupation number in an axle counting section.
6. The method of claim 1, wherein determining a condition for a bogie to pass through the axle counting point comprises:
the number of the axle number pulses which should be generated by one bogie through the axle counting point is equal to the number of the axle number pulses which are actually generated; or
The number of axle number pulses generated by a bogie through the axle counting point should be greater than a first preset threshold value, and at least the number of generated axle number pulses is a second preset threshold value, and the next axle number pulse is not generated within a preset time interval.
7. The method of claim 1, wherein calculating the cumulative bogie pass count in each direction and the current bogie occupancy per axle counting segment for each axle counting point from the axle count pulses transmitted by the axle counting points comprises:
counting the number of bogies passing through the axle counting points and the running direction according to the axle number pulse sent by the axle counting points to obtain the accumulated bogie passing number of each axle counting point in each direction;
obtaining the corresponding axle counting point of each axle counting section according to a formula
Calculating to obtain the current bogie occupation number of each axle counting section, wherein IkCumulative bogie passage number, O, for the k-th axle counting point in the direction of entry into the axle counting sectionkThe accumulated bogie passing number corresponding to the k-th axle counting point in the direction of exiting the axle counting section, and n is the number of the axle counting points forming the axle counting section.
8. The method of claim 7, wherein the determining whether there is a non-communicating vehicle in each axle counting section by using the current bogie occupancy number of each axle counting section and the bogie occupancy state corresponding to the communicating vehicle comprises:
according to the formula
Calculating and obtaining the occupied quantity of bogies of all communication vehicles in the axle counting section, wherein m is the quantity of the communication vehicles in the axle counting section, and BlThe occupied number of bogies in the axle counting section is the first communication vehicle;
if S-T is greater than A, a non-communication vehicle exists in the axle counting section; wherein A is a preset allowance.
9. The method of claim 7, wherein the determining whether the train passes through each axle counting point according to the change of the accumulated bogie passing number of each axle counting point in each direction comprises:
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to IkWhen the value is increased, the k-th axle counting point is passed by the train in the direction of the driving axle counting section;
in unit time, if the k-th axle counting point corresponding to the axle counting section corresponds to OkAnd if the value is increased, the k-th axle counting point passes through the train in the direction of the outgoing axle counting section.
10. The method according to claim 1, wherein the determining whether the train passing through the axle counting point is a non-communication train based on the axle counting point and the bogie occupation status corresponding to each communication train comprises:
the method comprises the steps of obtaining all the axle counting points through which trains pass, obtaining the communication vehicles passing through the axle counting points, and judging that the trains passing through the axle counting points are non-communication vehicles if the obtained communication vehicles passing through the axle counting points do not contain the trains passing through the axle counting points.
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| CN109606423A (en) * | 2018-12-10 | 2019-04-12 | 上海电气泰雷兹交通自动化系统有限公司 | Zone controller and non-communicating integrity of train judgment method |
| CN109649450B (en) * | 2018-12-26 | 2021-03-12 | 交控科技股份有限公司 | Automatic inter-station block control method and system under heavy-load mobile block |
| CN111422224B (en) * | 2019-09-27 | 2021-03-26 | 西门子交通技术(北京)有限公司 | Train tracking method and device |
| CN113553698B (en) * | 2021-06-28 | 2024-06-25 | 通号城市轨道交通技术有限公司 | Method and device for evaluating performance of axle counting equipment, electronic equipment and storage medium |
| CN114394127A (en) * | 2022-01-25 | 2022-04-26 | 深圳科安达电子科技股份有限公司 | Automatic stock track passing mark detection method and system |
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