A tramway turnout simulation system based on BIM

Abstract

The application relates to a BIM-based tramway turnout simulation system, which comprises an operation display platform for displaying the simulation of a tramway passing through a turnout under different scenes; a BIM subsystem for generating BIM lightweight data of the simulation system under different scenes to form a turnout simulation scene of the operation display platform; and a data processing subsystem for acquiring train position and turnout traffic light information through a train operation control system module and a turnout signal system module and displaying the turnout simulation under different scenes through the operation display platform. The BIM-based tramway turnout simulation system can simulate the tramway passing through a turnout under various turnout conditions, reasonably plan and design the signal control strategy of public traffic at the turnout, be favorable to the overall scheduling of dispatchers, improve the driving efficiency and avoid the conflict between the tramway and road vehicles under various road rights.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tram, in particular to a tram turnout simulation system based on BIM. BACKGROUND

[0002] Currently, many cities have built trams to improve urban operation efficiency. According to theoretical calculation and investigation analysis, the delay caused by tram vehicle driving process is generally composed of two parts: road section driving delay and turnout delay, but the value of the latter is much higher than that of the former. Therefore, reasonably planning and designing the signal control strategy of public transportation at the turnout is of great significance to improve the operation efficiency and passenger satisfaction and to the development. SUMMARY

[0003] The purpose of the embodiment of the present application is to provide a tram turnout simulation system based on BIM, which can integrate vehicle operation information and various signal data, form a three-dimensional visual display through BIM, simulate the tram passing through the intersection under various turnout conditions, reasonably plan and design the signal control strategy of public transportation at the turnout, be beneficial to the overall scheduling of the dispatch personnel, improve the driving efficiency, and avoid the conflict between the tram and the road vehicle under various road rights.

[0004] To achieve the above purpose, the present application provides the following technical scheme:

[0005] The embodiment of the present application provides a tram turnout simulation system based on BIM, which comprises:

[0006] An operation display platform, which is mapped with each item of data in the data processing subsystem through the model data of the BIM subsystem, displays the turnout simulation scene under multiple scenes;

[0007] A BIM subsystem, which is used to generate BIM lightweight data of the simulation system under different scenes, forms the turnout simulation scene of the operation display platform;

[0008] A data processing subsystem, which acquires the train position and intersection traffic light information through the train operation control system module and the turnout signal system module, and displays the turnout simulation under different scenes through the operation display platform.

[0009] The BIM subsystem comprises:

[0010] A BIM server, which stores and lightweightly displays the BIM model data, and provides the selection and editing function of the BIM model data to the operation display platform;

[0011] A BIM model management module, which constructs the BIM model of the tram vehicle, the track and track equipment, the turnout signal lamp and the intersection vehicle.

[0012] The data processing subsystem comprises:

[0013] A system data server stores data information of a train operation control system module and a turnout signal system module, the train operation control system module comprises a traffic control system, an intersection control system, a turnout controller and an active protection unit, processes various data of a tram passing through a turnout according to a specific scene under a specific right of way selected by an operation console, generates an optimal strategy under different conditions, sends a strategy report to the operation console, and receives a control instruction from the operation console.

[0014] The train operation control system module integrates operation information of the traffic control system, the intersection control system, the turnout controller and the active protection unit, visualizes the information to the operation console, and obtains an operation instruction issued by the operation console and issues the instruction to the traffic control system, the intersection control system, the turnout controller and the active protection unit.

[0015] The turnout signal system module obtains road turnout signal lamp display and time information, visualizes the information to the operation console, and obtains an operation instruction issued by the operation console to act.

[0016] The operation console is specifically configured as:

[0017] The BIM subsystem obtains a BIM lightweight model of a tram vehicle, a track and track equipment, a turnout signal lamp and a road crossing vehicle, maps the BIM lightweight model with vehicle position information, street lamp information and turnout display information obtained from the system data server one by one, displays a simulation scene of a tram passing through a turnout under different right of way modes and different scenes, and issues an operation instruction according to simulation optimization, adjusts the tram and the turnout signal lamp, and improves the passing efficiency of the tram under different right of way modes and different turnout scenes.

[0018] The BIM subsystem is specifically configured as:

[0019] The BIM subsystem is specifically configured as:

[0020] The basic BIM model of the tram turnout simulation system is subjected to lightweight processing and scene allocation to build a three-dimensional scene display of a tram passing through a turnout under different right of way modes and different conditions.

[0021] The data processing subsystem is specifically configured as:

[0022] According to the information obtained from the train operation control system module and the turnout signal system module and various road rights selected by the operation table, various scenes are processed, and it is judged whether the tram speed, stopping time and red light time of the turnout signal are adjusted, the optimal scheme under different adjustment modes is generated, and the three-dimensional scene simulation under the optimal adjustment scheme under different adjustment modes is selected and displayed through the operation display table.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] The present application can simulate the tram passing through the intersection under various turnout conditions, reasonably plan and design the signal control strategy of public transportation at the turnout, facilitate the overall scheduling of the dispatch personnel, improve the driving efficiency and avoid the conflict between the tram and the road vehicle under various road rights. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 The figure is a tram turnout simulation system provided by the present application.

[0027] Figure 2 The figure is a normal driving simulation scene of the tram turnout simulation system provided by the present application.

[0028] Figure 3 The figure is an increased green light time simulation scene of the tram turnout simulation system provided by the present application.

[0029] Figure 4 The figure is a reduced red light time simulation scene of the tram turnout simulation system provided by the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0031] The terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the named element.

[0032] The terms "first", "second", and the like, are used only to distinguish one entity or operation from another, and do not necessarily indicate any relative importance or any actual relationship or order between such entities or operations.

[0033] As shown in Figure 1 A tram turnout simulation system based on BIM, the system comprises an operation display platform, a BIM subsystem and a data processing subsystem, wherein the operation display platform is mapped with the model data of the BIM subsystem and each data in the data processing subsystem, and displays the turnout simulation scene under multiple scenes; the BIM subsystem is used to generate BIM lightweight data of the simulation system under different scenes, and forms the turnout simulation scene of the operation display platform; the data processing subsystem obtains the train position and the information of the road intersection traffic light through a train operation control system module (including a traffic control system, an intersection control system, a turnout controller and an active protection unit) and a turnout signal system module, and displays the turnout simulation under different scenes through the operation display platform.

[0034] Optionally, in combination with Figure 1 As shown, the BIM subsystem comprises a BIM server and a BIM

[0035] model management module, wherein the BIM server stores and lightweightly displays the BIM model data, and provides the selection and editing function of the BIM model data to the operation display platform; the BIM model management module constructs the BIM model of the tram vehicle, the track and track equipment, the turnout signal lamp and the road intersection vehicle.

[0036] Optionally, in combination with Figure 1 As shown, the system data processing subsystem of the system comprises a system

[0037] The data server, the train operation control system module and the turnout signal system module, wherein the system data server stores data information of the train operation control system module (including the train operation command system, the intersection control system, the turnout controller and the active protection unit) and the turnout signal system module, processes various data of the tram passing through the turnout according to a specific scene under a specific right of way selected by the operation platform, generates an optimal strategy under different conditions, sends the strategy report to the operation display platform, and receives the control instruction of the operation display platform; the train operation control system module integrates the operation information of the train operation command system, the intersection control system, the turnout controller and the active protection unit, visually displays the information to the operation display platform, and obtains the operation instruction issued by the operation display platform and issues the instruction to the train operation command system, the intersection control system, the turnout controller and the active protection unit; the turnout signal system module mainly obtains the display and time information of the road turnout signal lamp, visually displays the information to the operation display platform, and obtains the operation instruction issued by the operation display platform to act.

[0038] Specifically, the system data server can realize uploading of train operation information, intersection signal lamp state information, turnout information and protection information and transmission of operation display platform instructions, the train operation control system module (including the train operation command system, the intersection control system, the turnout controller and the active protection unit) and the turnout signal system module feed back tram vehicle information, train diagram and turnout road lamp information under specific right of way and specific road condition state to the system data server according to the instruction transmitted by the system data server, the system data server transmits the feedback information to the operation display platform for display. And send the optimal strategy generated under different conditions in this specific mode to the operation display platform, and issue the instruction to the train operation control system module (including the train operation command system, the intersection control system, the turnout controller and the active protection unit) and the turnout signal system module according to the selection of the operation display platform.

[0039] The tram turnout simulation system of the present application can obtain the BIM lightweight model of the tram vehicle, the track and the track equipment, the turnout signal lamp and the road vehicle from the BIM subsystem, map one-to-one with the vehicle position information, the road lamp information and the turnout display information obtained from the system data server, display the simulation scene of the tram passing through the turnout under different right of way modes and different scenes, and issue the operation instruction according to the simulation optimization, adjust the tram and the turnout signal lamp, and improve the passing efficiency of the tram under different right of way modes and different turnout scenes.

[0040] Specifically, the tram turnout simulation system of the present application can obtain the BIM lightweight model of the tram vehicle, the track and the track equipment, the turnout signal lamp and the road vehicle from the BIM subsystem, map one-to-one with the vehicle position information, the road lamp information and the turnout display information obtained from the system data server, display the simulation scene of the tram passing through the turnout under different right of way modes and different scenes, and issue the operation instruction according to the simulation optimization, adjust the tram and the turnout signal lamp, and improve the passing efficiency of the tram under different right of way modes and different turnout scenes.

[0041] Specifically, the tram turnout simulation system of the present application can obtain the BIM lightweight model of the tram vehicle, the track and the track equipment, the turnout signal lamp and the road vehicle from the BIM subsystem, map one-to-one with the vehicle position information, the road lamp information and the turnout display information obtained from the system data server, display the simulation scene of the tram passing through the turnout under different right of way modes and different scenes, and issue the operation instruction according to the simulation optimization, adjust the tram and the turnout signal lamp, and improve the passing efficiency of the tram under different right of way modes and different turnout scenes. Figure 2 , Figure 3 , Figure 4As shown, the operation display platform provides three right-of-way strategies: absolute priority, complete priority and partial priority. The tram passing through the turnout is divided into three ways: straight passing, left turning passing and right turning passing. The train position is divided into left side of the road and right side of the road. In the case of absolute priority right-of-way, the system data server simulates the current tram passing through the turnout time according to the train position and the train diagram. The system data server analyzes the data according to the existing control scheme of the turnout signal system and provides the optimal insertion tram phase time. In the case of win-win, the tram phase time is inserted first. After the tram safely passes through the turnout, the tram phase returns to the original control scheme. If there is still subsequent vehicle traffic demand after the tram phase, the green light time of the phase is extended to ensure that the vehicle completely passes through the intersection, which is not limited by the maximum green light time of the tram phase. In the case of complete priority right-of-way, the system data server simulates the current tram passing through the turnout time according to the train position and the train diagram, and judges the maximum green light time limit of the tram according to the horizontal traffic delay and queue length. If it still cannot pass through the turnout within the maximum green light time, it waits for the next tram phase. In the case of partial priority right-of-way, the system detects the tram passing demand. The system judges the time when the tram arrives at the brake decision point. If the signal is not green at the decision point, the tram will be delayed by extending the green light and shortening the red light. This control mode is limited by the phase sequence. The green light extension time and the red light shortening time are also limited by the maximum green light time of the same direction and the minimum green light time of the horizontal direction.

[0042] The tram turnout simulation system of the present application has a three-dimensional display function: the BIM subsystem is specifically configured to build a basic BIM model library of the tram turnout simulation system, including tram vehicle, turnout, turnout signal light and road crossing social vehicle models; the basic BIM model is subjected to lightweight processing and scene allocation to build a three-dimensional scene display of the tram passing through the turnout under different right-of-way conditions.

[0043] Among them, the basic BIM model is modeled by three-dimensional modeling software, and the tram vehicle model, on-board equipment model, transponder and other models are created by manufacturer drawings; the line turnout model is created according to the line drawing; the line intersection peripheral environment model and signal light model are created according to the actual situation. According to the actual situation of each line, the models are integrated and lightened to form different line models under different right-of-way conditions, which are selected and displayed on the operation display platform.

[0044] The tramway turnout simulation system of the present application can process various data of the tram passing through the turnout under various scenes selected by the operation platform under various road rights according to the information and operations obtained from the train operation control system module (including the traffic control system, the intersection control system, the turnout controller and the active protection unit) and the turnout signal system module, judge whether to adjust the tram running speed, the stopping time and the red light time of the turnout signal, generate the optimal scheme under different adjustment modes, and select and display the optimal adjustment scheme under the tram passing through the turnout under different adjustment modes through the operation display platform.

[0045] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A BIM-based tramway turnout simulation system, characterized by, The system comprises: An operation display platform, which is mapped with model data of a BIM subsystem and various data in a data processing subsystem to display a turnout simulation scene under multiple scenarios; The BIM subsystem is used to generate BIM lightweight data of the simulation system under different scenarios to form the turnout simulation scene of the operation display platform; The data processing subsystem is used to obtain train position and intersection traffic light information through a train operation control system module and a turnout signal system module, and to simulate and display the turnout under different scenarios through the operation display platform; The operation display platform provides three right-of-way strategies, i.e., absolute priority, complete priority and partial priority, the tram passes through the turnout in three ways, i.e., straight passing, left turning and right turning, and the train position is divided into left side of the road and right side of the road; in the case of absolute priority right-of-way, the system data server simulates the time of the tram passing through the turnout according to the train position and the train diagram, analyzes the data according to the existing control scheme of the turnout signal system, provides the optimal insertion time of the tram phase, in the case of failing to meet the win-win situation, the tram phase is inserted preferentially, and after the tram safely passes through the turnout, the tram phase returns to the original control scheme, if there is still a subsequent vehicle passing demand after the tram phase, the green light time of the phase is extended to ensure that the vehicle completely passes through the intersection, and the tram phase is not limited by the maximum green light time; in the case of complete priority right-of-way, the system data server simulates the time of the tram passing through the turnout according to the train position and the train diagram, and judges the maximum green light time limit of the tram according to the lateral traffic delay and queue length, if the tram still cannot pass through the turnout within the maximum green light time, the tram waits for the next tram phase; in the case of partial priority right-of-way, when the system detects the tram passing demand, the system judges the time of the tram reaching the brake decision point, if the signal is not green when the tram reaches the decision point, the tram is subjected to the least delay by extending the green light and shortening the red light; this control mode is limited by the phase sequence, and the green light extension time and the red light shortening time are also limited by the maximum green light time of the same direction and the minimum green light time of the lateral direction.

2. The tramway turnout simulation system based on BIM according to claim 1, characterized in that, The BIM subsystem comprises: A BIM server, which stores and lightweightly displays BIM model data, and provides selection and editing functions of the BIM model data to the operation display platform; A BIM model management module, which constructs BIM models of the tram, the track and track equipment, the turnout signal light and the intersection vehicle.

3. The tramway turnout simulation system based on BIM according to claim 1, characterized in that, The data processing subsystem comprises: A system data server, which stores data information of the train operation control system module and the turnout signal system module, the train operation control system module comprises a train operation command system, an intersection control system, a turnout controller and an active protection unit, processes various data of the tram passing through the turnout according to a specific right-of-way and a specific scene selected by the operation platform, generates an optimal strategy under different conditions, sends the strategy report to the operation display platform, and receives control instructions from the operation display platform; The train operation control system module integrates operation information of the train operation command system, the intersection control system, the turnout controller and the active protection unit, visually displays the information to the operation display platform, and obtains operation instructions issued by the operation display platform and issues the instructions to the train operation command system, the intersection control system, the turnout controller and the active protection unit. The turnout signal system module obtains road turnout signal lamp display and time information, visually displays the information to the operation display platform, and obtains operation instructions issued by the operation display platform to act.

4. The tramway turnout simulation system based on BIM according to claim 1, characterized in that, The operation display platform is specifically configured to: obtain BIM lightweight models of the tramcar, the track and track equipment, the turnout signal lamp and the road crossing vehicle from the BIM subsystem, one-to-one map vehicle position information, street lamp information and turnout display information obtained from the system data server, display simulated scenes of the tramcar passing through the turnout in different road right modes and different scenes, and issue operation instructions according to simulation optimization, adjust the tramcar and the turnout signal lamp, and improve the passing efficiency of the tramcar in different turnout scenes under different road rights.

5. The tramway turnout simulation system based on BIM according to claim 1, characterized in that, The BIM subsystem is specifically configured to: construct a basic BIM model library of the tramcar turnout simulation system, including tramcar, turnout, turnout signal lamp and road crossing social vehicle models; perform lightweight processing on the basic BIM models, perform scene allocation, and construct three-dimensional scene displays of the tramcar passing through the turnout under different road rights and different conditions.

6. The tramway turnout simulation system based on BIM according to claim 1, characterized in that, The data processing subsystem is specifically configured to: process various data of the tramcar passing through the turnout according to information obtained from the train operation control system module and the turnout signal system module and various scenes under various road rights selected by the operation platform, determine whether to adjust the tramcar running speed, the stopping time and the red light time of the turnout signal lamp, generate optimal adjustment schemes under different adjustment modes, and select and display three-dimensional scene simulations under the optimal adjustment schemes in the operation display platform.

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