Signal display control method and system

Abstract

The present invention relates to a signal light display control method and system, comprising the following steps: obtaining the CBTC mode type of the signal light based on the signal light's offline configuration information; obtaining crossing information of the signal light and information indicating that there is no non-CBTC train approaching in front of the signal light, and combining this with the CBTC mode type of the signal light to obtain the CBTC mode control information of the signal light; obtaining the permission status of the signal light based on the CBTC mode control information; obtaining other internal status information that affects the signal light display; determining light position drive parameters according to a signal light drive command table based on all internal status information that affects the signal light display; all status information that affects the signal light display includes the CBTC mode control information, the permission status of the signal light, and other internal status information that affects the signal light display; and controlling the lighting of corresponding light positions based on the light position drive parameters. Compared with the prior art, the present invention achieves stable and compatible control of the interlocking system and the trackside display solution.

Description

Technical Field

[0001] The present invention relates to the field of rail transit signal control, and in particular to a signal display control method and system. Background Art

[0002] In the Communication-Based Train Control (CBTC) system, there is often a mixed operation of CBTC trains and non-CBTC trains (non-equipped trains or trains with communication failures). In order to ensure operational safety at this time, a backup system based on secondary detection equipment (axle counters) and signals needs to be set up. In the CBTC system, the train runs entirely according to the movement authorization information sent by the trackside. This authorization information is not related to the trackside signal. Therefore, the CBTC system does not require trackside signals and does not need to consider the issue of signal display. However, most projects will introduce a backup system (an interlocking-based backup system or a point-based backup system), and in the backup mode, trackside signals are needed to tell the driver the status of the route ahead in real time. In the current CBTC project, the trackside signal display schemes mainly include the light-off scheme and the light-on scheme. The light-off scheme can be further divided into the following three types:

[0003] Solution 1: Normal lighting CBTC lights off when a train approaches or lights up CBTC to indicate the position of the light

[0004] The display logic is that when a CBTC train approaches the signal, the signal light will be off or the CBTC indicator light will be on. Otherwise, the light will be on in the backup mode.

[0005] Solution 2: In normal lighting CBTC mode, the signal light is allowed to be turned off or the CBTC light is turned on to indicate the position of the light.

[0006] The display logic is that when a CBTC train approaches a signal and the signal is in the permission state, the light will be turned off or the CBTC indicator light will be turned on; otherwise, the light will be turned on in the backup mode.

[0007] Solution 3: Normally off or on CBTC indicator light position

[0008] The display logic is that when there is no non-CBTC train approaching the signal, the signal light will be off or the CBTC indicator light will be on.

[0009] The display logic of the lighting scheme requires that the signal be illuminated regardless of whether a CBTC train is approaching. The display of the allow and prohibit signals in CBTC mode is the same as in backup mode. When no non-CBTC train is approaching, the signal is illuminated in CBTC mode; otherwise, it is illuminated in backup mode. In CBTC mode, when no CBTC train is approaching, the prohibit signal is displayed.

[0010] In backup mode, signals need to illuminate. These signals can be categorized as prohibit signals or allow signals based on their meaning. A red light is typically a prohibit signal (blue for shunting), prohibiting trains from passing it. Allow signals, depending on the specific display, can convey different meanings, such as reduced speed, warning of the upcoming section status, and guidance signals.

[0011] Due to the different design preferences of actual engineering projects, the trackside display scheme needs to be defined according to project requirements. This will result in the interlocking system and the trackside display scheme being incompatible and requiring expansion and upgrading, which increases the maintenance cost of the system. In the prior art, Chinese patent CN110329312B discloses a method for controlling a signal light with an interlocking system. The method receives interlocking control commands corresponding to different light colors through the interlocking system; determines the relay corresponding to the signal light that needs to be driven according to the signal light command table, which enumerates the corresponding actions of all the signal light relays when receiving the interlocking control commands of different light colors; drives the relay to perform the suction or drop action; collects the state values ​​fed back after all relays perform the corresponding actions, and matches and verifies them with the signal light state corresponding to the light color in the signal light state table to determine whether the signal light is correctly opened. This method can only solve the problem of the interlocking system and the signal light lighting circuit interface being incompatible and cannot solve the problem of the interlocking system and the trackside display scheme being incompatible and stable. Summary of the Invention

[0012] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a signal display control method and system, which realizes stable and compatible control of the interlocking system and the trackside display scheme.

[0013] The purpose of the present invention can be achieved by the following technical solutions:

[0014] A signal display control method comprises the following steps:

[0015] Acquire the CBTC mode type of the signal according to the offline configuration information of the signal;

[0016] Obtaining crossing information of the signal and information indicating that there is no non-CBTC train approaching ahead of the signal, and obtaining CBTC mode control information of the signal based on the CBTC mode type, the crossing information, and the information indicating that there is no non-CBTC train approaching ahead of the signal;

[0017] Acquiring a permission status of a signal according to the CBTC mode control information;

[0018] Obtaining other internal status information that affects the display of the signal light;

[0019] Determining the light position driving parameters according to all internal status information that affects the display of the signal and a signal driving command table; wherein all status information that affects the display of the signal includes the CBTC mode control information, the permission status of the signal, and other internal status information that affects the display of the signal;

[0020] Send a light position control command to the IO control unit according to the light position driving parameters to control the lighting of the corresponding light position.

[0021] Furthermore, the specific steps of obtaining the crossing information are: when the movement authorization of the CBTC train passes the signal and the minimum head of the CBTC train does not pass the signal, the crossing information of the signal is set to 1, otherwise it is set to 0.

[0022] Furthermore, the specific steps of obtaining the status information of no non-CBTC train approaching in front of the signal are: when the approach area of ​​the signal is idle or the first train approaching the signal upstream of the signal is a CBTC train, the information of no non-CBTC train approaching in front of the signal is set to 1, otherwise it is set to 0.

[0023] Furthermore, the CBTC mode types include a non-CBTC mode, a CBTC mode when a CBTC train approaches, and a CBTC mode when a non-CBTC train approaches.

[0024] Furthermore, the specific steps of obtaining the CBTC mode control information are:

[0025] If the CBTC mode type of the signal is the non-CBTC mode, setting the CBTC mode control information to 0;

[0026] If the CBTC mode type of the signal is the CBTC mode when the CBTC train approaches, a judgment is made based on the crossing information. If the information is 1, the CBTC mode control information is set to 1; otherwise, it is set to 0.

[0027] If the CBTC mode type of the signal is the non-CBTC train approaching CBTC mode, a judgment is made based on the state information of whether there is no non-CBTC train approaching in front of the signal. If the information is 1, the CBTC mode control information is set to 1, otherwise it is set to 0.

[0028] Furthermore, the specific step of obtaining the permission status includes: selecting whether to use CBTC logic or backup logic according to the CBTC mode control information; if the CBTC mode control information is 1, using CBTC logic to check and obtain the permission status; otherwise, using backup logic to calculate and obtain the permission status.

[0029] Furthermore, the other internal status information that affects the display of the signal is the type of route associated with the signal and whether there is a reverse switch inside the route, including whether the signal's dynamically associated route is a train route, whether the signal's dynamically associated route is a shunting route, whether the signal's dynamically associated route is a guide route, and whether there is a reverse switch in the signal's dynamically associated route.

[0030] Furthermore, the route type associated with the signal is calculated through the route processing command sent by the ATS.

[0031] Furthermore, the signal drive command table is composed of different signal type drive sub-tables divided according to signal types, and the signal type drive sub-table is generated by corresponding combinations of light position drive commands and combinations of signal internal states.

[0032] Furthermore, the light position driving command combination is composed of all physical light positions of the signal light arranged and combined in a fixed order; the signal light internal state combination is composed of all internal state information affecting the signal light display arranged and combined in a fixed order.

[0033] Furthermore, the specific steps for determining the light position driving parameters are: matching the internal state information of the signal machine with the internal state combination of the signal machine in the signal machine type driving sub-table one by one, if all states except the irrelevant state are matched successfully, then the internal combination state is considered to be matched successfully, otherwise the match fails; according to the successfully matched internal combination state, the light position driving parameters are assigned according to the corresponding light position driving command combination.

[0034] Furthermore, the lamp position driving parameter is a binary number. When the corresponding lamp position is driven to light up, the driving value is set to 1, otherwise it is set to 0.

[0035] Furthermore, the light positions include degradation-allowed light positions, allowed light positions, restricted light positions, CBTC light positions, shunting-allowed light positions and shunting-restricted light positions.

[0036] According to an aspect of the present invention, there is provided a signal display control system, comprising:

[0037] A CBTC mode type acquisition module, configured to acquire the CBTC mode type of the signal according to the offline configuration information of the signal;

[0038] A CBTC mode control information acquisition module is used to obtain crossing information of the signal and information about the approaching state of no non-CBTC train in front of the signal, and obtain the CBTC mode control information of the signal according to the CBTC mode type, crossing information and information about the approaching state of no non-CBTC train in front of the signal;

[0039] A permission status acquisition module, configured to acquire the permission status of the signal according to the CBTC mode control information;

[0040] Internal status information acquisition module, used to obtain other internal status information that affects the display of the signal;

[0041] A light position drive parameter determination module is used to determine the light position drive parameters according to the internal state information of the signal machine and the signal machine drive command table;

[0042] The light position control module is used to send a light position control command to the IO control unit according to the light position driving parameters to control the lighting of the corresponding light position.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The present invention obtains the CBTC mode type of a signal based on offline configuration information, as well as information about the signal's crossing status and the approaching status of non-CBTC trains ahead of the signal, thereby obtaining the signal's CBTC mode control information. The signal's permission status is then obtained based on the CBTC mode control information. Based on all internal status information affecting the signal, the light position drive parameters are determined according to the signal drive command table. Light position control commands are then sent to the I / O control unit to control the on / off of the corresponding light position. This achieves stable and compatible control of the interlocking system and the trackside display solution, enhancing the system's robustness and reliability while reducing development and maintenance costs.

[0045] 2. In the present invention, the signal machine drive command table is divided into different signal machine type drive sub-tables according to the signal machine type. Each signal machine type drive sub-table is generated by a signal machine light position drive command combination and a signal machine internal state combination. Different signal machine light position drive command combinations mean different display modes, which can correspond to one or more signal machine internal state combinations. The design of the signal machine drive command table simplifies the complexity of the system and facilitates the expansion and maintenance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a flow chart of the signal display control method proposed by the present invention;

[0047] Figure 2 This is a schematic diagram of the signal crossing information application area;

[0048] Figure 3 Schematic diagram of the scenario where there is no non-CBTC train approaching the signal in front of the signal with the state information of 1, where (3a) is the scenario where the approach area of ​​signal S1 is empty, (3b) is the scenario where the first train approaching the signal upstream of the signal is a CBTC train, and (3c) is another scenario where the first train approaching the signal upstream of the signal is a CBTC train;

[0049] Figure 4 Schematic diagram of the scenario where there is no non-CBTC train approaching status information in front of the signal, where (4a) is the scenario where the non-CBTC train approaching information is set to 0, and (4b) is the scenario where the non-CBTC train approaching information is set to 1. DETAILED DESCRIPTION

[0050] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0051] English abbreviations involved:

[0052] Communication-Based Train Control (CBTC)

[0053] Automatic Train Supervision (ATS)

[0054] Example 1

[0055] This embodiment provides a signal light display control method, such as Figure 1 As shown, the following steps are included:

[0056] S1. Obtain the CBTC mode type of the signal according to the offline configuration information of the signal.

[0057] There are three types of CBTC modes for signals: 1. No CBTC mode; 2. CBTC mode when a CBTC train approaches; 3. CBTC mode when a non-CBTC train approaches.

[0058] S2. Obtain crossing information of the signal and information indicating that there is no non-CBTC train approaching ahead of the signal, and obtain CBTC mode control information of the signal based on the CBTC mode type, the crossing information, and the information indicating that there is no non-CBTC train approaching ahead of the signal.

[0059] The specific steps for obtaining the crossing information are as follows: when the movement authorization of the CBTC train passes the signal and the minimum head of the CBTC train does not pass the signal, the crossing information of the signal is set to 1, otherwise it is set to 0.

[0060] like Figure 2As shown in the figure, the minimum locomotive position and axle counter boundary of a CBTC train are the areas where signal S1's crossing information applies. For route start signal S1, if the corresponding route is not set, the maximum authorized movement position should be at the boundary of the first axle counter to be protected. In special scenarios where the axle counter and signal are located at the same location, the signal crossing information should be set to 1. The minimum locomotive position of the train is the near end of the locomotive during train positioning.

[0061] The specific steps for obtaining the status information of no non-CBTC train approaching in front of the signal are as follows: when the approach area of ​​the signal is idle or the first train approaching the signal upstream of the signal is a CBTC train, set the information of no CBTC train approaching in front of the signal to 1; otherwise, set it to 0.

[0062] like Figure 3 In the three scenarios shown, the signal light has no CBTC train approaching information, which is 1. Figure 3 As shown in (3a), the approach area of ​​signal S1 is idle, as shown in Figure 3 As shown in (3b), the first train approaching the signal upstream of the signal is a CBTC train, as shown in Figure 3 As shown in (3c), the first train approaching the signal upstream of the signal is also a CBTC train. Figure 4 In the two scenarios shown, there is a non-communication vehicle in front of signal S1. In this case, the non-CBTC train approaching information should be set to 0, as shown in the following example: Figure 4 As shown in (4a); after the non-communication vehicle has completely passed the signal S1, the non-CBTC train approaching information is set to 1, as shown in Figure 4 As shown in (4b).

[0063] Whether the current signal is in CBTC mode is determined based on the signal's CBTC mode type, signal crossing information, and information about no non-CBTC trains approaching ahead. Specifically, if the signal's CBTC mode type is "non-CBTC mode," the signal cannot be in CBTC control mode, and the CBTC mode control information is set to 0. If the signal's CBTC mode type is "CBTC mode with approaching CBTC train," the signal's crossing information is used to determine if the information is 1, and the CBTC mode control information is set to 1; otherwise, it is set to 0. If the signal's CBTC mode type is "CBTC mode with approaching non-CBTC train," the signal's non-CBTC train approach information is used to determine if the information is 1, and the CBTC mode control information is set to 1; otherwise, it is set to 0. For end-of-line blocking signals that require a constant red light, type 1 is configured. For shunting signals or signals in non-CBTC areas that do not have CBTC mode, type 1 is also configured. For train signals at the beginning of an approach, the CBTC light-off scheme is adopted.

[0064] S3. Obtain the permission status of the signal according to the CBTC mode control information.

[0065] The specific steps for obtaining the permitted status are as follows: select whether to use CBTC logic or backup logic based on the CBTC mode control information. If the CBTC mode control information is 1, the CBTC logic is used to check and obtain the permitted status; otherwise, the backup logic is used to calculate and obtain the permitted status. If CBTC logic is used, the signal is opened without checking for conditions such as section idleness. If backup logic is used, conditions such as section idleness must be checked. It should be noted that in backup mode, if the signal filament breaks, the signal must be forced to the restricted state; in CBTC mode, filament and CBTC third light position breakage are allowed without affecting the signal status. Only when the CBTC is on, the restricted filament breakage forces the signal to the restricted state.

[0066] S4. Obtain other internal status information that affects the signal display.

[0067] Other factors that affect the signal's display of the same route include the type of route associated with the signal and whether there is a reverse turnout inside the route. Therefore, other status information of the signal includes at least the following:

[0068] 1. Is the signal's dynamically associated route a train route?

[0069] 2. Is the signal's dynamically associated route a shunting route?

[0070] 3. Is the signal-related route a guided route?

[0071] 4. Whether there is a reverse turnout in the signal's dynamically associated route;

[0072] The signal-associated route type information can be calculated based on the route handling command sent by the ATS (Automatic Train Monitoring System). If the ATS issues a train route handling command, the signal is associated with the train route; if the ATS issues a shunting route handling command, the signal is associated with the shunting route; if the ATS issues a guide route handling command, the signal is estimated to be associated with the guide route.

[0073] S5. Determine the light position drive parameters based on all internal status information that affects the signal display and in accordance with the signal drive command table.

[0074] All status information that affects the signal display includes CBTC mode control information, signal permission status and other internal status information that affects the signal display.

[0075] The specific steps for determining the light position drive parameters are as follows: The internal state information of the signal is matched against the internal state combinations of the signal in the signal type drive subtable. If all states except the irrelevant state match successfully, the internal combination state is considered to match successfully. Otherwise, the match fails. If a matching internal state combination is found, the light position drive parameters are assigned according to the corresponding signal position drive command combination. Otherwise, according to the principle of fail-safe, a set of default safety-oriented drive parameters is output. The signal type is configured offline according to the signal display logic.

[0076] The lamp position drive parameter is a binary number. When the corresponding lamp position is lit, the drive value is set to 1, otherwise it is set to 0.

[0077] The signal drive command table consists of different signal type drive sub-tables, divided by signal type. Different signal display logic combinations correspond to different signal types. The signal type drive sub-table is generated by combining light position drive command combinations with signal internal state combinations. Different signal position drive command combinations represent different display modes and can correspond to one or more signal internal state combinations.

[0078] The light position drive command combination is composed of all the physical light positions of the signal arranged and merged in a fixed order; the signal internal state combination is composed of all the internal state information that affects the signal display arranged and merged in a fixed order.

[0079] The signal light positions include the following:

[0080] 1. Degraded light position (usually yellow light)

[0081] 2. Allow light position (usually green light)

[0082] 3. Restricted light position (usually red light)

[0083] 4. CBTC light position (usually blue light)

[0084] 5. Shunting permission light position (usually white light)

[0085] 6. Shunting restricted light position (usually blue light)

[0086] For each signal internal state information, you need to set its matching type in the signal internal state combination:

[0087] 1.CHECK_BE_TRUE, the internal state of the signal is 1, which means the match is successful;

[0088] 2. CHECK_BE_FALSE, the internal state of the signal is 0, then the match is successful;

[0089] 3. NO_CHECK: The internal status of the signal is irrelevant and is not checked during matching.

[0090] In this embodiment, two types of traffic lights are selected for matching.

[0091] The signal type in Table 1 is a three-display train signal using CBTC light-off. Its signal type driver sub-table is shown in the following table.

[0092] Table 1: Signal Type Driver Subtable for Signal Type 1

[0093]

[0094]

[0095] The display logic of the signal type driven sub-table for signal type 1 is as follows:

[0096] 1. The light goes off when the signal is in CBTC mode;

[0097] 2. The signal is in backup mode, the associated route is a train route and the signal permits it, and all switches in the route are in position and display green lights;

[0098] 3. When the signal is in backup mode, the associated route is a train route and the signal permits it, and the arrival / exit position in the route is reversed, a yellow light is displayed;

[0099] In some projects, white light is used instead of yellow light, and the display logic is the same as above.

[0100] 4. The signal is in backup mode and the signal is in restricted state, showing red light.

[0101] The signal type in Table 2 is a three-display train signal. The three-display train signal uses CBTC lighting and has a guidance function.

[0102] Table 2: Signal type driver sub-table for signal type 2

[0103]

[0104]

[0105] The display logic of the signal type driven sub-table for signal type 2 is as follows:

[0106] 1. The signal-related route is a train route and the signal permits it, and all switches in the route are in position and display green lights;

[0107] 2. When the signal-related route is a train route and the signal permits it, the yellow light will be displayed when the overtaking position in the route is in the reverse position;

[0108] 3. The signal-related route is the guided route and the signal permits it, and the red and yellow lights are displayed;

[0109] 4. The traffic light will turn red when the traffic signal is in restricted state.

[0110] By adjusting the signal type driver table, adaptive control of signal color lights can be achieved, thereby adapting to different trackside display solutions to meet the needs of specific projects.

[0111] S6. Send the light position control command to the IO control unit according to the light position drive parameters to control the lighting of the corresponding light position.

[0112] The light position driving parameters are determined according to the signal machine drive command table based on the internal status information of the signal machine. The control command is sent to the IO control unit based on the light position driving parameters to control the lighting of the corresponding light position of the signal machine, thereby achieving stable and compatible control of the interlocking system and the trackside display solution.

[0113] In another preferred embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the signal display control method in embodiment 1 can be implemented.

[0114] Example 2

[0115] This embodiment provides a signal display control system, including:

[0116] A CBTC mode type acquisition module is used to obtain the CBTC mode type of the signal according to the offline configuration information of the signal;

[0117] The CBTC mode control information acquisition module is used to obtain the crossing information of the signal and the information that there is no non-CBTC train approaching in front of the signal. The CBTC mode control information of the signal is obtained according to the CBTC mode type, the crossing information and the information that there is no non-CBTC train approaching in front of the signal.

[0118] A permission status acquisition module is used to obtain the permission status of the signal according to the CBTC mode control information;

[0119] Internal status information acquisition module, used to obtain other internal status information that affects the display of the signal;

[0120] A light position drive parameter determination module is used to determine the light position drive parameters according to the internal state information of the signal machine and the signal machine drive command table;

[0121] The light position control module is used to send light position control commands to the IO control unit according to the light position drive parameters to control the lighting of the corresponding light position.

[0122] The rest is the same as Example 1.

[0123] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A signal display control method, characterized in that: The following steps are involved: Acquire the CBTC mode type of the signal according to the offline configuration information of the signal; Obtaining crossing information of the signal and information about a non-CBTC train approaching ahead of the signal, and obtaining CBTC mode control information of the signal according to the CBTC mode type, the crossing information, and the information about a non-CBTC train approaching ahead of the signal. The specific steps of obtaining the crossing information are: when the movement authorization of the CBTC train crosses the signal and the minimum head of the CBTC train does not cross the signal, setting the crossing information of the signal to 1, otherwise setting it to 0; Acquiring a permission status of a signal according to the CBTC mode control information, wherein the specific steps of acquiring the permission status include: selecting whether to use CBTC logic or backup logic according to the CBTC mode control information; if the CBTC mode control information is 1, acquiring the permission status by checking the CBTC logic; otherwise, acquiring the permission status by calculating the backup logic; Obtaining other internal status information that affects the display of the signal, wherein the other internal status information that affects the display of the signal is the type of route associated with the signal and whether there is a reverse turnout inside the route, including multiple types of whether the dynamically associated route of the signal is a train route, whether the dynamically associated route of the signal is a shunting route, whether the dynamically associated route of the signal is a guide route, and whether there is a reverse turnout inside the dynamically associated route of the signal; Determining the light position driving parameters according to all internal status information that affects the display of the signal and in accordance with a signal driving command table; wherein all internal status information that affects the display of the signal includes the CBTC mode control information, the permission status of the signal, and other internal status information that affects the display of the signal; Send a light position control command to the IO control unit according to the light position driving parameters to control the lighting of the corresponding light position.

2. The signal display control method according to claim 1, characterized in that: The specific steps of obtaining the status information of no non-CBTC train approaching in front of the signal are: when the approach area of ​​the signal is idle or the first train approaching the signal upstream of the signal is a CBTC train, the information of no non-CBTC train approaching in front of the signal is set to 1, otherwise it is set to 0.

3. The signal display control method according to claim 1, characterized in that: The CBTC mode types include a non-CBTC mode, a CBTC mode when a CBTC train approaches, and a CBTC mode when a non-CBTC train approaches.

4. The signal display control method according to claim 3, characterized in that: The specific steps for obtaining the CBTC mode control information are: If the CBTC mode type of the signal is the non-CBTC mode, setting the CBTC mode control information to 0; If the CBTC mode type of the signal is the CBTC mode when the CBTC train approaches, a judgment is made based on the crossing information. If the information is 1, the CBTC mode control information is set to 1; otherwise, it is set to 0. If the CBTC mode type of the signal is the CBTC mode when a non-CBTC train approaches, a judgment is made based on the state information of whether there is no non-CBTC train approaching in front of the signal. If the information is 1, the CBTC mode control information is set to 1, otherwise it is set to 0.

5. The signal display control method according to claim 1, characterized in that: The route type associated with the signal is calculated through the route processing command sent by the ATS.

6. The signal display control method according to claim 1, characterized in that: The signal machine driving command table is composed of different signal machine type driving sub-tables divided according to the signal machine type. The signal machine type driving sub-table is generated by correspondingly combining the light position driving command combination and the signal machine internal state combination.

7. The signal display control method according to claim 6, characterized in that: The light position driving command combination is composed of all the physical light positions of the signal arranged and combined in a fixed order; the signal internal state combination is composed of all the internal state information that affects the signal display arranged and combined in a fixed order.

8. The signal display control method according to claim 6, characterized in that: The specific steps for determining the light position driving parameters are as follows: matching the internal state information of the signal machine with the internal state combination of the signal machine in the signal machine type driving sub-table one by one; if all states except the irrelevant state are matched successfully, the internal state combination is considered to be matched successfully; otherwise, the matching fails; according to the successfully matched internal state combination, the light position driving parameters are assigned according to the corresponding light position driving command combination.

9. The signal display control method according to claim 8, characterized in that: The lamp position driving parameter is a binary number. When the corresponding lamp position is driven to light up, the driving value is set to 1, otherwise it is set to 0.

10. The signal display control method according to claim 1, characterized in that: The light positions include downgraded permitted light positions, permitted light positions, restricted light positions, CBTC light positions, shunting permitted light positions and shunting restricted light positions.

11. A signal display control system, characterized in that: include: A CBTC mode type acquisition module, configured to acquire the CBTC mode type of the signal according to the offline configuration information of the signal; a CBTC mode control information acquisition module configured to acquire crossing information of the signal and information indicating that no non-CBTC train is approaching in front of the signal, and to acquire the CBTC mode control information of the signal according to the CBTC mode type, the crossing information, and the information indicating that no non-CBTC train is approaching in front of the signal. The specific steps for acquiring the crossing information are as follows: when the movement authorization of the CBTC train passes the signal and the minimum head of the CBTC train does not pass the signal, setting the crossing information of the signal to 1; otherwise, setting the crossing information to 0; a permission status acquisition module, configured to acquire the permission status of the signal according to the CBTC mode control information, wherein the specific steps of acquiring the permission status include: selecting whether to adopt CBTC logic or backup logic according to the CBTC mode control information; if the CBTC mode control information is 1, adopting CBTC logic to check and acquire the permission status; otherwise, adopting backup logic to calculate and acquire the permission status; an internal state information acquisition module, configured to acquire other internal state information that affects the display of the signal, wherein the other internal state information that affects the display of the signal is the type of route associated with the signal and whether there is a reverse turnout inside the route, including multiple types of information such as whether the dynamically associated route of the signal is a train route, whether the dynamically associated route of the signal is a shunting route, whether the associated route of the signal is a guide route, and whether there is a reverse turnout inside the dynamically associated route of the signal; a light position drive parameter determination module, configured to determine light position drive parameters based on all internal state information affecting the signal display and in accordance with a signal drive command table; wherein all internal state information affecting the signal display includes the CBTC mode control information, the signal permission state, and other internal state information affecting the signal display; The light position control module is used to send a light position control command to the IO control unit according to the light position driving parameters to control the lighting of the corresponding light position.

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