CN111196292A - Train position drawing method, device, equipment and computer readable storage medium - Google Patents

Train position drawing method, device, equipment and computer readable storage medium Download PDF

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Publication number
CN111196292A
CN111196292A CN202010003296.8A CN202010003296A CN111196292A CN 111196292 A CN111196292 A CN 111196292A CN 202010003296 A CN202010003296 A CN 202010003296A CN 111196292 A CN111196292 A CN 111196292A
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train
link
tail
head
display mode
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CN111196292B (en
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刘超
侯倩
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Traffic Control Technology TCT Co Ltd
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Traffic Control Technology TCT Co Ltd
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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
    • 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
    • B61L25/028—Determination of vehicle position and orientation within a train consist, e.g. serialisation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

Embodiments of the present disclosure provide a train position drawing method, apparatus, device, and computer-readable storage medium. The method comprises the steps of receiving train position parameters reported by VOBC, wherein the train position parameters comprise LINK numbers and LINK offset of a train head and a train tail; determining a current display mode according to the train position parameter; and drawing the train position according to the corresponding drawing rule of the current display mode. In this way, according to the position parameters sent by the train VOBC, the representation line segment of the real position of the train can be displayed on the ATS display interface, the accurate train position can be displayed, and different requirements of general section display, double-vision section display and layered section display are met, so that the smooth tracking of the CBTC train is realized.

Description

Train position drawing method, device, equipment and computer readable storage medium
Technical Field
Embodiments of the present disclosure relate generally to the field of rail transit technology, and more particularly, to a train position mapping method, apparatus, device, and computer-readable storage medium.
Background
A Train Control system Based on CBTC (Communication Based Train Control) can implement mobile blocking. The ZC (Zone Controller) may acquire an accurate position of a Train in real time, and send the Train position to a VOBC (Vehicle On-Board Controller) of the Train, and the VOBC reports the position to an ATS (Automatic Train Supervision) after acquiring the real-time position thereof, so as to display the position On an ATS display interface.
The position display of the communication vehicle on the ATS display interface is realized based on the occupation of a logic section CT (communication train) given by a ZC, and the train position display is based on the ATS tracking of the logic section, namely the tracking of jumping is carried out by taking the logic section as a unit (namely, the train position jumps from one logic section to the next logic section instead of continuously changing); the position of the non-communication vehicle on the ATS display interface is realized based on the interlocking UT occupation, and the position display of the non-communication vehicle is based on the ATS tracking of physical sections, namely jumping tracking by taking the physical sections as units (one physical section comprises one or more logical sections).
On the ATS display interface, there is no precise location of the train, only the occupancy of the train in the sector: i.e., CT occupancy of logical zones or UT occupancy of physical zones. The train tracking display is not friendly, and the jump tracking can be carried out only by taking a logical section or a physical section as a unit
Disclosure of Invention
According to an embodiment of the present disclosure, a train position mapping scheme is provided.
In a first aspect of the present disclosure, a train position mapping method is provided. The method comprises the following steps: receiving train position parameters reported by VOBC (video audio broadcasting), wherein the train position parameters comprise LINK numbers and LINK offset of the head and the tail of the train; determining a current display mode according to the train position parameter; and drawing the train position according to the corresponding drawing rule of the current display mode.
The above-described aspects and any possible implementation further provide an implementation in which determining a current display mode according to the train position parameter includes: if the LINK where the train is located is a common section, the display mode is a common display mode; if the LINK where the train is located is a double-vision section, the display mode is a double-vision section display mode; and if the LINK where the train is located is a boundary section displayed in the branch line, the display mode is a branch line display mode.
The above-mentioned aspects and any possible implementation manners further provide an implementation manner, wherein the drawing the train position according to the drawing rule corresponding to the current display mode includes: converting the LINK number and the LINK offset into pixel coordinates in an ATS display interface; determining the relative left-right relation of the train head and the train tail through the coordinate positions of the train head and the train tail in an ATS display interface in a general section display mode; in a double-vision section display mode, determining the adjacent relation of a source LINK and a double-vision LINK in an ATS display interface in the display of the ATS display interface, and determining the relative left-right relation of the train head and the train tail according to the position of the train head and the train tail in the ATS display interface; determining the relative position of the head and the tail of the train through an activation end sent by a train VOBC (video audio object controller) in a branch display mode; and finishing the drawing of the train position.
The above-described aspect and any possible implementation further provide an implementation in which the corresponding drawing rule of the general section display mode includes: if the train head and the train tail are in the same LINK, drawing according to the coordinates of the train head and the train tail; if the train head and tail are respectively positioned on two adjacent LINKs, judging the relative left-right relation of the coordinates of the train head and tail, and respectively drawing on the LINKs where the train head and tail are positioned; and if the train head and tail are not positioned on the adjacent LINKs, judging the relative left-right relation of the coordinates of the train head and tail, respectively drawing on the LINKs where the train head and tail are positioned, and drawing a line segment of the LINKs between the train head and tail.
The above aspect and any possible implementation manner further provide an implementation manner, and the respectively drawing the LINKs where the train head and the train tail are located includes: if the pixel coordinate of the train head is on the left relative to the pixel coordinate of the train tail, the start point of the train position on the line segment where the train head is located corresponds to the pixel coordinate value of the train head on the LINK of the segment, the end point of the train position on the LINK is the end point of the LINK, and the position of the train tail is displayed on the other LINK on the right side of the LINK; if the pixel coordinate of the head of the train is right relative to the pixel coordinate of the tail of the train, the start point of the train position on the line segment where the head of the train is located corresponds to the pixel coordinate value of the head of the train on the LINK of the segment, the end point of the train position on the LINK is the start point of the LINK, and the tail of the train position is displayed on another LINK on the left side of the LINK.
The above-described aspect and any possible implementation further provides an implementation, where the corresponding drawing rule of the double-vision section display mode includes: if the train head and the train tail are in the same LINK, respectively drawing in a double vision section according to the coordinates of the train head and the train tail; if the train head and the train tail are not on the same LINK, determining the adjacent relation of the source LINK and the double-vision LINK in the display of the ATS display interface by configuring the coordinate difference of the adjacent LINKs; and then drawing the real position of the train according to a general section display mode.
The foregoing aspect and any possible implementation manner further provide an implementation manner, where the corresponding drawing rule of the line-by-line display mode includes: converting the VOBC to the train activating end of the ATS into the running direction of the train in the interface display, and judging the relative position of the train head and the train tail; and then drawing the real position of the train according to a general section display mode.
In a second aspect of the present disclosure, a train position mapping system is provided. The system comprises: the system comprises a position receiving module, a VOBC (video audio broadcasting) module and a VOBC (video audio broadcasting) module, wherein the position receiving module is used for receiving train position parameters reported by the VOBC, and the train position parameters comprise LINK numbers and LINK offset; the display mode determining module is used for determining a current display mode according to the train position parameter; and the train position drawing module is used for drawing the train position according to the corresponding drawing rule of the current display mode.
In a third aspect of the disclosure, an electronic device is provided. The electronic device includes: a memory having a computer program stored thereon and a processor implementing the method as described above when executing the program.
In a fourth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method as according to the first and/or second aspect of the present disclosure.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
FIG. 1 illustrates a schematic diagram of an exemplary operating environment in which embodiments of the present disclosure can be implemented;
FIG. 2 shows a flow chart of a train position mapping method according to an embodiment of the present disclosure;
FIG. 3 illustrates a real location illustration of a train in accordance with a disclosed embodiment;
FIG. 4 illustrates a locomotive rendering example in a general section display mode, in accordance with a disclosed embodiment;
FIG. 5 illustrates a double-vision section display mode legend in accordance with a disclosed embodiment;
FIG. 6 illustrates an example of a true position error plot for a train in a double-vision segment display mode, in accordance with a disclosed embodiment;
FIG. 7 illustrates a real train position mapping example in a tiered segment display mode, according to a disclosed embodiment;
FIG. 8 illustrates an example of a true position error plot for a train in a tiered segment display mode in accordance with a disclosed embodiment;
FIG. 9 illustrates an example of a true position correct mapping of a train in a tiered segment display mode, according to a disclosed embodiment;
FIG. 10 shows a block diagram of a train position mapping system according to an embodiment of the present disclosure;
FIG. 11 illustrates a block diagram of an exemplary electronic device capable of implementing embodiments of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In this disclosure, (this embodiment and its advantages may be summarized simply by one paragraph, possibly not simply repeated with the claims).
FIG. 1 illustrates a schematic diagram of an exemplary operating environment 100 in which embodiments of the present disclosure can be implemented. The VOBC102 and the ATS104 are included in the runtime environment 100.
Fig. 2 shows a flow chart of a train position mapping method 200 according to an embodiment of the present disclosure. The method 200 may be performed by the ATS104 of fig. 1.
At block 210, the ATS104 receives train position parameters reported by the VOBC102, where the train position parameters include LINK numbers and LINK offsets of the head and tail of the train;
in some embodiments, the train position parameters are sent to the vehicle-mounted VOBC102 of the train by the ZC, and the VOBC102 reports the train position parameters to the ATS104 after acquiring the train position parameters, so that the ATS104 can map the train position on a display interface. The train position parameters comprise a LINK number and a LINK offset of a train head, and a LINK number and a LINK offset of a train tail. In some embodiments, the LINK offset is in cm.
In some embodiments, LINK, like a logical section, is also one way to describe a section. As shown in fig. 2, the ATS display interface converts the LINK number and the LINK offset into a pixel point on the display interface, and then draws the pixel point. In the ATs display interface, a LINK is not necessarily a line segment, but may be a polyline. For convenience of processing, when a train position line segment is drawn, a branch is added without judging whether a LINK has an inflection point, only an attribute lineList is added to the LINK, and the attribute lineList is used for representing a list of drawn line segments contained in the LINK, wherein the drawn LINK has straight lines and broken lines, and the list comprises all the straight lines and broken lines of the LINK. In the ATS display interface, the left end point index of the line segment is [0], and the right end point index is [1 ]. Common drawing programs draw from left to right on a display screen.
At block 220, the ATS104 determines the current display mode based on the train location parameter;
in some embodiments, if the LINK in which the train is located is a general section, the display mode is a general display mode; if the LINK where the train is located is a double-vision section, the display mode is a double-vision section display mode; and if the LINK where the train is located is a boundary section displayed in the branch line, the display mode is a branch line display mode.
The double-vision section display means: the double-vision section refers to the boundary section of the main line and the vehicle section, namely the switching rail and the last section of the vehicle section. The transfer rail (the demarcation point between the main line and the train section, when the train enters the transfer rail, the train is considered to enter the main line, and the train of the non-full-automatic train section is upgraded to be a CBTC train at the position) belongs to the main line, but the train section can also see the section for the safety redundancy of the ATS monitoring of the train operation. At the same time, the station of the main track (station to which the switch track belongs) also sees the last section of the train section, i.e. the section connected to the switch track. Under the condition of having a double-vision section, the left-right position relationship cannot be judged from the coordinate values of the head and the tail, because the position of the head and the tail has two groups of pixel coordinates of double vision on the ATS display interface. According to the requirements of rail transit operators, the two display sections for double vision can be in the same direction or opposite directions.
The line-by-line display mode is: due to the fact that stations are many, the ATS display interface is formed by transversely splicing a plurality of display screens. Sometimes, due to the limitation of the length and the width of the ATS monitoring room, one line cannot be displayed continuously, and the display screen array divided into 2-4 lines is required to display. When displaying in rows, drawing of the boundary points becomes difficult.
At block 230, the train location is drawn according to the corresponding drawing rules for the current display mode.
In some embodiments, the ATS converts the LINK number and LINK offset into pixel coordinates in an ATS display interface; and drawing the train position according to the corresponding drawing rule of the current display mode.
In some embodiments, the rendering rules in the general section display mode are as follows:
the ATS needs to map the real position of the train in combination with the location of the section on the ATS display interface. The positions of the head and the tail of the vehicle are converted into pixel coordinates in an ATS display interface, the relative left-right relation of the head and the tail of the vehicle is determined according to the coordinate positions of the head and the tail of the vehicle in the ATS display interface, and a connecting line, namely a starting point coordinate and an end point coordinate, is determined.
There are three cases:
if the train head and the train tail are in the same LINK, drawing according to the coordinates of the train head and the train tail; under the condition, the relative left-right relation of the train head and the train tail does not need to be determined, two end points of the line segment are pixel coordinate points in the ATS display interface diagram corresponding to the train head and the train tail, and the line segment between the two end points is the position of the train in the ATS display interface diagram.
If the train head and tail are respectively positioned on two adjacent LINKs, judging the relative left-right relation of the coordinates of the train head and tail, and respectively drawing on the LINKs where the train head and tail are positioned; if the pixel coordinate of the head of the train is left relative to the pixel coordinate of the tail of the train, as shown in fig. 3, the start point of the train position on the line segment where the head of the train is located corresponds to the pixel coordinate value of the head of the train on the LINK of the segment, the end point of the train position on the LINK is the end point of the LINK, and the position of the tail of the train is displayed on another LINK on the right side of the LINK; if the pixel coordinate of the head of the train is right relative to the pixel coordinate of the tail of the train, as shown in fig. 4, the start point of the train position on the line segment where the head of the train is located corresponds to the pixel coordinate value of the head of the train on the LINK of the segment, the end point of the train position on the LINK is the start point of the LINK, and the position of the tail of the train is displayed on another LINK on the left side of the LINK.
And if the train head and tail are not located on the adjacent LINKs respectively, judging the relative left-right relation of the coordinates of the train head and tail, drawing on the LINKs where the train head and tail are located respectively, and drawing a line segment of the LINKs between the train head and tail. At the moment, the method for respectively drawing the LINKs where the train head and the train tail are located is the same as the method for respectively drawing the LINKs where the train head and the train tail are located under the condition that the train head and the train tail are located at two adjacent LINKs.
In some embodiments, the drawing rules in the double-vision section display mode are as follows:
if the train head and the train tail are in the same LINK, respectively drawing in a double vision section according to the coordinates of the train head and the train tail;
if the train head and the train tail are not on the same LINK, determining the adjacent relation of the source LINK and the double-vision LINK in the display of the ATS display interface by configuring the coordinate difference of the adjacent LINKs; and then drawing the real position of the train according to a general section display mode.
In this embodiment, a drawing method of a review section is described by taking an example in which the display direction of the review section is opposite. Referring to fig. 5, fig. 5 shows display sections LINKB and LINKA of the vehicle section, and display sections LINKA and LINKB displaying front lines in opposite directions. For the sake of distinction, LINKA and LINKB are labeled a1, a2 and B1, B2, respectively.
If the train is on a single LINK (for example, the train is only on LINKA), the drawing method of the LINK is the same as that of the LINK of the train head and the train tail in a general section display mode, the position of the head and the train tail is converted into the coordinates of pixel points of an ATS display interface, and a line segment between the two points is a real position line segment of the train.
The difficulty in drawing the double-vision section lies in the judgment of the relative positions of the head and the tail of the vehicle when the LINK is crossed. When the train is located in the double-vision zone, only one train position is available, and two displayed zones are occupied on the ATS display interface, and both the two displayed zones have pixel coordinates corresponding to the train position. Therefore, the head position and the tail position of the train respectively correspond to two pixel coordinate points in the ATS display interface, and how to display the head position and the tail position cannot be determined by coordinate values.
For example, fig. 5 shows a double-view section in which the transition track on the front line is LINKA, and the LINK in the vehicle section connected to the transition track LINKA is LINKB. In the ATS display interface, due to double vision, a vehicle section interface display area is provided with LINKB1 and LINKA2, wherein LINKB1 is an original section of LINKB, and LINKA2 is a double vision section of LINKA; the main line interface display area is provided with LINKA1 and LINKB2, wherein LINKA1 is an original segment of LINKA, and LINKB2 is a double-vision segment of LINKB. It is known from the local configuration file (i.e. background data) that LINKA is connected to LINKB, i.e. LINKB1 is connected to LINKA1 or LINKA2, and LINKA1 is connected to LINKB1 or LINKB 2. When the determination of the connection sequence relationship between the LINKA and the LINKB is wrong, the relative position of the train head and the train tail is also wrong, so that the drawing and display of the real position of the train are wrong, as shown in fig. 6, x represents the train head, y represents the train tail, and the black line segment representing the train drawn by the train in fig. 6 is obviously divided into two segments near the two ends and cannot be displayed as a whole train (the gray line segment represents the track, the same below). Display errors can cause trouble to operators and can cause misoperation.
In this embodiment, the adjacent relationship of the source LINK and the double-vision LINK in the ATS display interface in the display interface is determined by configuring the coordinate difference of the adjacent LINKs, so that the real position of the train is continuously drawn according to the general section display mode.
For example, the adjacent LINK coordinate difference value is configured by a configuration file. When the coordinate difference between the endpoints of two LINKs is less than a specific value d, the corresponding endpoints of the two LINKs are considered to be connected. If the coordinate difference is equal to or greater than the specified value d, the two LINKs are considered to be unconnected. Empirically, the specific value d may be set to 20-50 pixel values. For example, referring to FIG. 6, for LINKA1, the coordinate differences from LINKB1 and LINKB2 (four differences in total between LINKA1[0] and LINKB1[0] and [1], LINKA1 and LINKB1[0] and [1], and LINKA1[0], LINKA1 and LINKB2 are also four differences), if the differences between LINKA1[0], LINKA [1] and LINKB1 are all greater than d, LINKA1 is considered unconnected to LINKB 1. Wherein, the end [0] represents the left end point of the line segment, and the end [1] represents the right end point of the line segment. At this time, of the differences between LINKA1[0], LINKA [1] and LINKB2, if the difference between LINKA1[1] and LINKB2[0] is less than d (generally 0, or an integer less than d), it is determined that LINKA1 is connected to LINKB2, and it is determined that LINKA2 is connected to LINKB 1. Determining the relative positions of the train head and the train tail on the LINKA1 and the LINKB2 according to the condition that the train head and the train tail are respectively at two adjacent LINKs or the train head and the train tail are respectively at two nonadjacent LINKs in a general section display mode, so as to determine the real position line section of the train at the position; for LINKA2 and LINKB1, the true train location line segment is determined in the same manner.
In some embodiments, the corresponding drawing rules for the line-wise display mode include: converting the VOBC to the train activating end of the ATS into the running direction of the train in the interface display, and judging the relative position of the train head and the train tail; and then drawing the real position of the train according to a general section display mode.
Due to the fact that the number of stations in rail transit is large, the ATS display interface is formed by transversely splicing a plurality of display screens. Sometimes, due to the limitation of the length and the width of the ATS monitoring room, one line cannot be displayed continuously, and the display screen array divided into 2-4 lines is required to display. When displaying in rows, drawing of the boundary points becomes difficult.
In the layered drawing, the scheme determines the relative position of the head and the tail of the train by using an activated end sent by a VOBC (video object controller) of the train. And converting the train activating end which sends the VOBC to the ATS into the running direction of the train in the interface display, thereby judging the relative position of the train head and the train tail. As shown in FIG. 7, LINKA is connected with LINKB, but is displayed on the upper layer and the lower layer of the display interface respectively, the coordinate value of LINKA is on the upper side, and the coordinate value of LINKB is on the right side, and the coordinate value of LINKB is on the lower line of LINKA and on the left side.
When a train runs from LINKA to LINKB (the train head is at LINKB, the train tail is at LINKA), namely the direction is right, the position of the train head relative to the train tail is right, the running direction of the train is right, the display mode of a general section is referred, if the relative position of the train head and the train tail is judged only by coordinates, the position of the train head relative to the train tail is on the left, namely the LINKB draws the position of the train head to an LINKB [1] end, namely a black line segment at the lower part in figure 8, the train tail relative to the train head is on the right, and the end point of the drawn line segment is a LINKA [0] end to a corresponding coordinate of the train tail, namely a black line segment at the upper part in. According to the scheme, the relative positions of the head and the tail of the train at the layering position are judged by increasing the train running direction, namely the train running direction at the moment is right, the head of the train is right relative to the tail of the train, namely the head of the train is closer to the right relative to a line segment endpoint (the LINKB left endpoint at the moment) of the LINK, and the tail of the train is closer to the left relative to a line segment endpoint (the LINKA right endpoint at the moment) of the LINK; referring to the drawing of the general section display mode, the LINKA drawing line segment end points are the coordinates of the tail of the vehicle and the right end point of the LINKA, and the LINKB drawing line segment end points are the coordinates of the start end point of the LINKB and the head of the vehicle, as shown in fig. 9.
When a train drives to the LINKA of the previous layer from the LINKB of the next layer, the head is at the LINKA (x coordinate point), the tail is at the LINKB (y coordinate point), namely the running direction is leftward, the head is leftward relative to the tail, the LINKA drawing line segment end point refers to the general section display mode drawing principle, the LINKA drawing line segment end point refers to the coordinate x where the head is located and the LINKA right end point, and the LINKB drawing line segment end point refers to the LINKB starting end point and the coordinate y where the tail is located. Similar to the right, no further description is provided herein.
According to the embodiment of the disclosure, the following technical effects are achieved:
1. the true location of the train is displayed in a section on the ATS display interface.
2. On an ATS display interface, the real position of the train can move smoothly and continuously; the real-time location of the train can be observed on the ATS display interface, e.g., the train is crossing a sector or within a sector.
It is noted that while for simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present disclosure is not limited by the order of acts, as some steps may, in accordance with the present disclosure, occur in other orders and concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are exemplary embodiments and that acts and modules referred to are not necessarily required by the disclosure.
The above is a description of embodiments of the method, and the embodiments of the apparatus are further described below.
Fig. 10 shows a block diagram of a train position mapping system 300 according to an embodiment of the present disclosure. As shown in fig. 10, the system 300 includes:
the position receiving module 302 is configured to receive train position parameters reported by the VOBC, where the train position parameters include a LINK number and a LINK offset;
a display mode determining module 304, configured to determine a current display mode according to the train position parameter;
and a train position drawing module 306, configured to draw a train position according to a drawing rule corresponding to the current display mode.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the described module may refer to the corresponding process in the foregoing method embodiment, and is not described herein again.
FIG. 11 shows a schematic block diagram of an electronic device 400 that may be used to implement embodiments of the present disclosure. The apparatus 400 may be used to implement the ATS102 of fig. 1. As shown, device 400 includes a Central Processing Unit (CPU)401 that may perform various appropriate actions and processes in accordance with computer program instructions stored in a Read Only Memory (ROM)402 or loaded from a storage unit 408 into a Random Access Memory (RAM) 403. In the RAM403, various programs and data required for the operation of the device 400 can also be stored. The CPU 401, ROM 402, and RAM403 are connected to each other via a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
A number of components in device 400 are connected to I/O interface 405, including: an input unit 406 such as a keyboard, a mouse, or the like; an output unit 407 such as various types of displays, speakers, and the like; a storage unit 408 such as a magnetic disk, optical disk, or the like; and a communication unit 409 such as a network card, modem, wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
Processing unit 401 performs various methods and processes described above, such as method 200. For example, in some embodiments, the method 200 may be implemented as a computer software program tangibly embodied in a machine-readable medium, such as the storage unit 408. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device 400 via the ROM 402 and/or the communication unit 409. When the computer program is loaded into RAM403 and executed by CPU 401, one or more steps of method 200 described above may be performed. Alternatively, in other embodiments, the CPU 401 may be configured to perform the method 200 in any other suitable manner (e.g., by way of firmware).
The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a load programmable logic device (CPLD), and the like.
Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowchart and/or block diagram to be performed. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (10)

1. A train position drawing method is characterized by comprising the following steps:
receiving train position parameters reported by VOBC (video audio broadcasting), wherein the train position parameters comprise LINK numbers and LINK offset of the head and the tail of the train;
determining a current display mode according to the train position parameter;
and drawing the train position according to the corresponding drawing rule of the current display mode.
2. The method of claim 2, wherein determining a current display mode from the train position parameter comprises:
if the LINK where the train is located is a common section, the display mode is a common display mode;
if the LINK where the train is located is a double-vision section, the display mode is a double-vision section display mode;
and if the LINK where the train is located is a boundary section displayed in the branch line, the display mode is a branch line display mode.
3. The method of claim 2, wherein the mapping of the train position according to the corresponding mapping rule of the current display mode comprises:
converting the LINK number and the LINK offset into pixel coordinates in an ATS display interface;
determining the relative left-right relation of the train head and the train tail through the coordinate positions of the train head and the train tail in an ATS display interface in a general section display mode;
in a double-vision section display mode, determining the adjacent relation of a source LINK and a double-vision LINK in an ATS display interface in the display of the ATS display interface, and determining the relative left-right relation of the train head and the train tail according to the position of the train head and the train tail in the ATS display interface;
determining the relative position of the head and the tail of the train through an activation end sent by a train VOBC (video audio object controller) in a branch display mode;
and finishing the drawing of the train position.
4. The method of claim 3, wherein the corresponding drawing rule for the general segment display mode comprises:
if the train head and the train tail are in the same LINK, drawing according to the coordinates of the train head and the train tail;
if the train head and tail are respectively positioned on two adjacent LINKs, judging the relative left-right relation of the coordinates of the train head and tail, and respectively drawing on the LINKs where the train head and tail are positioned;
and if the train head and tail are not positioned on the adjacent LINKs, judging the relative left-right relation of the coordinates of the train head and tail, respectively drawing on the LINKs where the train head and tail are positioned, and drawing a line segment of the LINKs between the train head and tail.
5. The method of claim 4, wherein the step of respectively drawing on the LINKs where the train head and tail are located comprises the steps of:
if the pixel coordinate of the train head is on the left relative to the pixel coordinate of the train tail, the start point of the train position on the line segment where the train head is located corresponds to the pixel coordinate value of the train head on the LINK of the segment, the end point of the train position on the LINK is the end point of the LINK, and the position of the train tail is displayed on the other LINK on the right side of the LINK;
if the pixel coordinate of the head of the train is right relative to the pixel coordinate of the tail of the train, the start point of the train position on the line segment where the head of the train is located corresponds to the pixel coordinate value of the head of the train on the LINK of the segment, the end point of the train position on the LINK is the start point of the LINK, and the tail of the train position is displayed on another LINK on the left side of the LINK.
6. The method of claim 3, wherein the corresponding drawing rule for the review section display mode comprises:
if the train head and the train tail are in the same LINK, respectively drawing in a double vision section according to the coordinates of the train head and the train tail;
if the train head and the train tail are not on the same LINK, determining the adjacent relation of the source LINK and the double-vision LINK in the display of the ATS display interface by configuring the coordinate difference of the adjacent LINKs; and then drawing the real position of the train according to a general section display mode.
7. The method of claim 3, wherein the corresponding drawing rule for the line-by-line display mode comprises:
converting the VOBC to the train activating end of the ATS into the running direction of the train in the interface display, and judging the relative position of the train head and the train tail; and then drawing the real position of the train according to a general section display mode.
8. A train position mapping system, comprising:
the system comprises a position receiving module, a VOBC (video audio broadcasting) module and a VOBC (video audio broadcasting) module, wherein the position receiving module is used for receiving train position parameters reported by the VOBC, and the train position parameters comprise LINK numbers and LINK offset;
the display mode determining module is used for determining a current display mode according to the train position parameter;
and the train position drawing module is used for drawing the train position according to the corresponding drawing rule of the current display mode.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, wherein the processor, when executing the program, implements the method of any of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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