A BIM-based signal display inspection method and device

Abstract

The present invention relates to the field of railway signal BIM design, and particularly relates to a method and device for checking signal display based on BIM. The method includes the following steps: S1, assembling the railway signal BIM model onto the railway design BIM model to form a railway general assembly BIM model; S2, scanning along the center line of the railway general assembly BIM model within a preset driver's perspective range to obtain the driver's perspective scanning range along the center line of the railway; setting a preset signal display range with a signal device having a signal display function as the center point; S3, determining a signal display blind area in the intersection area of the driver's perspective scanning range and the signal display range, drawing the blind area range, and adjusting the position of the signal device according to the blind area range. The present invention realizes the checking of signal display based on BIM, and can effectively improve the design quality and efficiency of the railway signal specialty.

Description

Technical Field

[0001] The present invention relates to the field of railway signal BIM design, and particularly to a method and device for checking the display of signal lamps based on BIM. Background Art

[0002] In the process of railway signal design, since the display information of signal display devices can effectively improve railway transportation efficiency, reduce transportation costs, and improve the working conditions of train operation personnel, and at the same time can issue instructions and commands to relevant train operation and shunting operation personnel to ensure the safe operation of trains, the design of the installation position of railway signal display devices is very important. In addition to meeting its basic selection regulations and display rules, the design of the installation position of railway signal display devices also requires that its display distance and range meet the requirements. As an important part of railway signal display devices, if there are problems with the display distance and range not meeting the regulations, it will bring serious potential accident hazards to the safe operation of trains. The inspection of signal lamp display generally includes two aspects. One is that in the worst case where terrain and ground features affect the line of sight, the display distance of the signal lamp along the line shall not be less than the preset distance. The other is that within the display distance of the signal lamp, relevant equipment and buildings of other specialties shall not block the display of the signal.

[0003] Currently, the inspection of the display of railway signal display devices is mainly confirmed through on-site manual measurement. The inspection of signal lamp display achieved by this method has low efficiency, high labor costs, uncontrollable human errors, and if the on-site conditions change, on-site measurement has to be carried out again. With the continuous development and maturity of Building Information Modeling (BIM) technology in the field of railway construction, there are currently several software in China that can complete the BIM design of railway signal specialties and achieve collaborative design with models of other specialties. However, there is no clear method and software applicable to the inspection of signal lamp display. Therefore, it is necessary to design a method for checking the display of signal lamps based on BIM. Summary of the Invention

[0004] The purpose of the present invention is to propose a method and device for checking the display of signal lamps based on BIM in view of the current problems such as "low efficiency", "high cost", and "large repeatability" in the on-site measurement for checking the display of signal lamps. This method scans the signal display devices on both sides of the line along the center line of the line from the driver's perspective to determine whether the signal display devices within the driver's perspective are blocked or meet the requirements of display distance and display range, realizing the inspection of signal lamp display based on BIM, and effectively improving the design quality and efficiency of the railway signal specialty.

[0005] In order to achieve the above invention purpose, the present invention provides the following technical solutions:

[0006] A method for checking the signal display based on BIM, comprising the following steps:

[0007] S1. Obtain the railway design BIM model, and assemble the railway signal BIM model onto the railway design BIM model to form a railway general assembly BIM model;

[0008] S2. Select a driver's perspective focus on the center line of the line in the railway general assembly BIM model, and scan along the center line of the line within a preset driver's perspective range based on the driver's perspective focus to obtain the driver's perspective scanning range along the center line of the line; Set a preset signal display range with a signal device having a signal display function as the center point;

[0009] S3. Determine the signal display blind area in the intersection area between the driver's perspective scanning range and the signal display range, draw the blind area range, and adjust the position of the signal device according to the blind area range.

[0010] As a preferred solution, in step S3, the step of determining the signal display blind area includes:

[0011] Connect the driver's perspective focus and the signal device to obtain a connection line. If the connection line is within the intersection area and there are obstacles between the connection lines, there is a signal display blind area at the driver's perspective focus.

[0012] As a preferred solution, step S3 further includes: Connect the driver's perspective focus and the signal device to obtain a connection line. If the connection line is within the intersection area and there are no obstacles between the connection lines, there is no signal display blind area at the driver's perspective focus.

[0013] As a preferred solution, the method for displaying the signal display blind area includes the following steps:

[0014] Devices within the driver's perspective scanning range are obtained through the driver's perspective. At the same time, devices within the signal display range are scanned along the signal display range. Then, the devices within the driver's perspective scanning range and the signal display range are the devices that may cause occlusion; Then, according to the coordinate positions of the connection line and the devices that may cause occlusion, determine the occluding devices, and determine the display blind area according to the contour coordinates of the signal display range and the occluding devices.

[0015] As a preferred solution, the method for generating the driver's perspective range is: Using a point on the center line of the line as the vertex, the center line of the line as the center line, and generating a conical surface with a preset angle. The part of the conical surface above the ground where the railway is located is the driver's perspective range.

[0016] As a preferred solution, with the signal device having a signal display function as the center point, a preset signal display range of the signal machine is set, which specifically includes: selecting the orientation direction of the signal machine. With the signal device having a signal display function as the vertex and the straight line where the orientation direction of the signal machine is located as the center line, a conical surface is generated at a preset angle, and the part of the conical surface above the ground where the railway is located is the preset signal display range of the signal machine.

[0017] Based on the same concept, a signal machine display inspection device based on BIM is also proposed, including a line scanning module, a signal machine scanning module, a blind area generation module, and a blind area drawing module;

[0018] The line scanning module is used to select the driver's perspective focus on the center line of the line in the railway general assembly BIM model, and based on the driver's perspective focus, scan the center line of the line within a preset driver's perspective range to obtain the driver's perspective scanning range along the center line of the line;

[0019] The signal machine scanning module is used to set a preset signal display range of the signal machine with the signal device having a signal display function as the center point;

[0020] The blind area generation module is used to determine the signal machine display blind area in the intersection area of the driver's perspective scanning range and the signal machine display range;

[0021] The blind area drawing module is used to draw the blind area range.

[0022] Based on the same concept, a signal machine display inspection system based on BIM is also proposed, including at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute a signal machine display inspection method according to any one of the above.

[0023] Based on the same concept, a computer-readable medium is also proposed, on which instructions executable by a processor are stored, and when the instructions are executed by the processor, the processor executes a signal machine display inspection method according to any one of the above.

[0024] Compared with the prior art, the beneficial effects of the present invention:

[0025] The method and system of the present invention scan the signal display devices on both sides of the line along the center line of the line from the driver's perspective to determine whether the signal display devices within the driver's perspective are blocked or meet the requirements of display distance and display range, realizing the inspection of signal display based on BIM, and effectively improving the design quality and efficiency of the railway signal profession for the problems proposed in the background technology. Description of the Drawings

[0026] Figure 1 It is a flowchart of a method for inspecting signal display based on BIM in Embodiment 1;

[0027] Figure 2 It is a schematic diagram of a device for inspecting signal display based on BIM in Embodiment 2;

[0028] Figure 3 It is a schematic diagram of the driver's perspective range in Embodiment 2;

[0029] Figure 4 It is a schematic diagram of the scanning range along the signal machine in Embodiment 2;

[0030] Figure 5 It is a schematic diagram with the center point of the signal light in Embodiment 2;

[0031] Figure 6 It is a schematic diagram of no blind area for signal display in Embodiment 2;

[0032] Figure 7 It is a schematic diagram of a blind area for signal display in Embodiment 2;

[0033] Figure 8 It is a schematic diagram of a blind area for signal display in Embodiment 2;

[0034] Figure 9 It is a blind area diagram of the driver's perspective in Embodiment 2. Detailed Embodiments

[0035] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0036] Embodiment 1

[0037] A method for inspecting signal display based on BIM, the flowchart is as Figure 1 shown, including the following steps:

[0038] S1, obtain the railway design BIM model, and assemble the railway signal BIM model onto the railway design BIM model to form a railway general assembly BIM model;

[0039] S2. Select the driver's perspective focus on the center line of the railway general assembly BIM model, and scan along the center line of the railway based on the driver's perspective focus within a preset driver's perspective range to obtain the driver's perspective scanning range along the center line of the railway; take the signal device with signal display function as the center point and set a preset signal display range.

[0040] S3. Determine the signal display blind area in the intersection area of the driver's perspective scanning range and the signal display range, draw the blind area range, and adjust the position of the signal device according to the blind area range.

[0041] As a preferred solution, in step S3, the steps of determining the signal display blind area include:

[0042] Connect the driver's perspective focus and the signal device to obtain a connection line. If the connection line is within the intersection area and there are obstacles between the connection lines, there is a signal display blind area at the driver's perspective focus.

[0043] As a preferred solution, step S3 also includes: Connect the driver's perspective focus and the signal device to obtain a connection line. If the connection line is within the intersection area and there are no obstacles between the connection lines, there is no signal display blind area at the driver's perspective focus.

[0044] As a preferred solution, the method for generating the driver's perspective range is: taking the point on the center line of the railway as the vertex, the center line of the railway as the center line, and generating a conical surface with a preset angle. The part of the conical surface above the ground where the railway is located is the driver's perspective range.

[0045] As a preferred solution, taking the signal device with signal display function as the center point and setting a preset signal display range specifically includes: selecting the orientation direction of the signal device, taking the signal device with signal display function as the vertex, the straight line where the orientation direction of the signal device is located as the center line, and generating a conical surface with a preset angle. The part of the conical surface above the ground where the railway is located is the preset signal display range.

[0046] Embodiment 2

[0047] Based on the same concept, a signal display inspection device based on BIM is also proposed. The structural schematic diagram of the device is as Figure 2 shown, including a line scanning module along the railway, a signal device scanning module along the signal device, a blind area generation module, and a blind area drawing module.

[0048] The line scanning module is used to select the driver's perspective focus on the center line of the railway general assembly BIM model, scan along the center line of the line within a preset driver's perspective range based on the driver's perspective focus, and obtain the driver's perspective scanning range along the center line of the line;

[0049] The signal post scanning module is used to set a preset signal post display range with the signal equipment having a signal display function as the center point;

[0050] The blind area generation module is used to determine the signal post display blind area in the intersection area of the driver's perspective scanning range and the signal post display range;

[0051] The blind area drawing module is used to draw the blind area range.

[0052] The detailed functions of each module are described as follows:

[0053] I. Line scanning module

[0054] In the process of railway signal BIM design, when the signal specialty receives the design result documents of other specialties, on the premise of meeting the relevant design specifications and technical requirements of this specialty, finally, the signal specialty BIM model will be assembled with the BIM models of each specialty. Since in the general assembly model, after summarizing the BIM models of each specialty, the types and quantities of models are numerous and most models will not block the signal post display. Therefore, to implement the signal post display inspection method based on BIM designed by the present invention, the most important point is to screen the BIM models of each specialty. The line scanning function proposed by the present invention is to scan the signal display devices on both sides of the line and the relevant devices of each specialty along the center line of the line based on the driver's perspective range, and store the device information obtained by the scanning to provide a basis for the subsequent functional modules.

[0055] This function mainly has two purposes. One is to screen the signal posts arranged along the railway line, and the other is to initially screen other specialty devices or structures that may block the signal post display from the driver's perspective.

[0056] The content of the BIM models of each specialty is very rich. Through the line-by-line scanning of the line scanning module, the components related to the BIM signal post are screened out, and the signal posts arranged along the railway line are obtained, which is convenient for subsequent identification.

[0057] Within the driver's perspective range: The point at a certain height from the center line of the line is the driver's perspective focus. A certain distance is extended along any direction of the line as the central axis. With the driver's focus as the center and the central axis as the radius, a "sector (body)" is obtained at a certain angle as the driver's perspective range; The schematic diagram of the driver's perspective range is as Figure 3 shown.

[0058] The steps to implement the functions of this module are as follows:

[0059] Step 1: Identify the center line model of the pre-station line;

[0060] Step 2: Select a point at a certain distance from one end of the line center as the focus of the driver's view;

[0061] Step 3: Form a "sector (body)" driver's view range with a certain distance and angle:

[0062] Step 4: Traverse all signal devices with signal display functions along the line center within the driver's view range;

[0063] Step 3: Traverse all devices of non-signal specialties such as catenary and communication (except for the pre-station specialty models such as roads, bridges, and tunnels) along the line center within the driver's view range;

[0064] Step 4: Record the above-mentioned devices that appear within the driver's view range.

[0065] II. Signal scanner module

[0066] Through the line scanning function, the screening of signal display devices has been completed, and a preliminary screening of other specialty models that may block the signal display has been carried out. However, the BIM models of each specialty obtained through the line scanning function are for the entire line. For the display inspection of a specific signal, the number of BIM models of each specialty obtained above is still relatively large, and further scanning is required to perform more accurate model screening for the display inspection of the specific signal. The signal scanner function is based on the display range of the signal display device, scans the relevant devices of each specialty within its display range, and stores the device information obtained from the scanning.

[0067] The main purpose of this function is to accurately screen other specialty BIM models that may block the signal display for a specific signal, and prepare for the blind area judgment of the specific signal.

[0068] Signal display range: A "sector (body)" with a certain angle and a certain distance radiating from the signal light of the signal, similar to the driver's view range. Figure 4 is a schematic diagram of the signal scanner range, Figure 5 is a schematic diagram with the signal light as the center point.

[0069] The steps to implement the functions of this module are as follows:

[0070] Step 1: Select a specific signal display device and use its signal light as the center point;

[0071] Step 2: Form a "sector (body)" signal display range with a certain distance and angle;

[0072] Step 3: Take the signal display range as the scanning area and traverse all the equipment of non-signal specialties such as catenary and communication within the display range (excluding the models of pre-station specialties such as roads, bridges, and tunnels).

[0073] Step 4: Record the above-mentioned equipment that appears within the signal display range.

[0074] III. Blind Spot Generation Module

[0075] Through the above functions of scanning along the line and scanning along the signal, other professional BIM models that may cause occlusion have been screened out for the display inspection of a specific signal. The signal blind spot judgment function is based on the signal display range, selects the orientation direction of the signal and the driver's perspective focus at the required display distance as the dynamic inspection starting point, connects the driver's perspective focus and the signal light point, and judges whether the display distance of the signal is sufficient and whether there is occlusion according to the connection situation between the two points.

[0076] The implementation steps of this module are as follows:

[0077] Step 1: Select a specific signal display device and take its signal light as the center point;

[0078] Step 2: Form a "sector (volume)" signal display range with a certain distance and angle:

[0079] Step 3: Select the orientation direction of the signal and the driver's perspective focus at the required display distance;

[0080] Step 4: Form a "sector (volume)" driver's perspective range with a certain distance and angle;

[0081] Step 5: Connect the driver's perspective focus and the signal light point.

[0082] Step 6: Move the driver's focus closer to the signal at a certain distance until the driver's focus moves to a position before reaching the signal, and then return to Step 4 to continue;

[0083] Signal blind spot judgment method:

[0084] Case 1: If there is no obstacle between the two points and within the signal display range and the driver's perspective range, there is no signal display blind spot at this driver's perspective point. The schematic diagram of no blind spot in signal display is as Figure 6 shown.

[0085] Case 2: If there is an obstacle (such as a catenary pole) on the connection line between two points and it is within the signal display range and the driver's view range, there is a blind area in the signal display at the driver's view point, which is caused by the occlusion of other professional BIM models. The schematic diagram of the signal display with a blind area is shown in Figure 7 as follows.

[0086] Furthermore, since the devices within the driver's view scanning range are obtained through the driver's view in the previous step, and at the same time, the devices within the signal display range are scanned along the signal display range, the devices within the driver's view scanning range and the devices within the signal display range are the devices that may cause occlusion. In addition, according to the coordinate positions of the connection line and the devices that may cause occlusion, the devices causing occlusion can be accurately determined, and the blind area can be determined based on the contour coordinates of the signal display range and the devices causing occlusion.

[0087] Case 3: If there is no obstacle on the connection line between two points, but the driver's position is outside the divergence angle range of the signal light (such as when the train approaches the signal or the installation angle of the signal is inappropriate), there is still a blind area in the signal display in the driver's view. In this case, the schematic diagram of the signal display with a blind area is shown in Figure 8 as follows.

[0088] IV. Blind Area Drawing Module

[0089] According to the signal display blind area judgment function, all the connection lines from the point at the required display distance to the signal point and from the signal light point to the driver's view focus have been obtained. According to the blind area judgment, the points with signal display blind areas can be obtained on the center line of the line. The set of these connection lines judged to have signal display blind areas is the signal display blind area.

[0090] The main purpose of this function is to visually display the signal machine blind area and provide conditions for the subsequent adjustment of the signal machine. The driver's view blind area diagram is shown in Figure 9 as follows.

[0091] Finally, it should be noted that: The above-described embodiments in detail are only preferred practices of the present invention and cannot be used to limit the scope of the rights of the present invention. Equivalent replacements of the technical solutions recorded in the foregoing embodiments do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A method for checking the signal display of a signal machine based on BIM, characterized in that, it includes the following steps: S1. Obtain the railway design BIM model, and assemble the railway signal BIM model onto the railway design BIM model to form a railway general assembly BIM model; S2. Select the driver's perspective focus on the center line of the line in the railway general assembly BIM model, and scan along the center line of the line within a preset driver's perspective range based on the driver's perspective focus to obtain the driver's perspective scan range along the center line of the line; Set a preset signal machine display range with the signal device having a signal display function as the center point; S3. Determine the signal machine display blind area in the intersection area of the driver's perspective scan range and the signal machine display range, draw the blind area range, and adjust the position of the signal machine according to the blind area range; In step S3, the step of determining the signal machine display blind area includes: Connect the driver's perspective focus and the signal device to obtain a connection line. When the connection line is within the intersection area, if there is an obstacle between the connection lines, there is a signal machine display blind area for the driver's perspective focus; if there is no obstacle between the connection lines, there is no signal machine display blind area for the driver's perspective focus; The method for displaying the signal machine display blind area includes the following steps: The devices within the driver's perspective scan range are obtained through the driver's perspective, and at the same time, the devices within the signal machine display range are scanned along the signal machine display range. Then, the devices within the driver's perspective scan range and the devices within the signal machine display range are the devices that may cause occlusion; Then, according to the coordinate positions of the connection line and the devices that may cause occlusion, determine the occluding devices, and determine the display blind area according to the contour coordinates of the signal machine display range and the occluding devices.

2. A method for checking the signal display of a signal machine based on BIM according to claim 1, characterized in that, the method for generating the driver's perspective range is: taking the point on the center line of the line as the vertex, the center line of the line as the center line, and generating a conical surface with a preset included angle. The part of the conical surface above the ground where the railway is located is the driver's perspective range.

3. A method for checking the signal display of a signal machine based on BIM according to claim 1, characterized in that, setting a preset signal machine display range with the signal device having a signal display function as the center point specifically includes: selecting the orientation direction of the signal machine, taking the signal device having a signal display function as the vertex, the straight line where the orientation direction of the signal machine is located as the center line, and generating a conical surface with a preset included angle. The part of the conical surface above the ground where the railway is located is the preset signal machine display range.

4. A device for checking the signal display of a signal machine based on BIM, characterized in that, it includes a line scanning module, a signal machine scanning module, a blind area generation module, and a blind area drawing module; The line scanning module is used to select the driver's perspective focus on the center line of the railway general assembly BIM model, scan along the center line of the line within a preset driver's perspective range based on the driver's perspective focus, and obtain the driver's perspective scanning range along the center line of the line; The signal aspect scanning module is used to set a preset signal aspect display range with the signal device having a signal display function as the center point; The blind area generation module is used to determine the signal aspect display blind area in the intersection area of the driver's perspective scanning range and the signal aspect display range; The blind area drawing module is used to draw the blind area range; Determining the signal aspect display blind area specifically includes the following steps: Connect the driver's perspective focus and the signal device to obtain a connection line. When the connection line is within the intersection area, if there is an obstacle between the connection lines, there is a signal aspect display blind area for the driver's perspective focus; if there is no obstacle between the connection lines, there is no signal aspect display blind area for the driver's perspective focus; The method for displaying the signal aspect display blind area includes the following steps: The devices within the driver's perspective scanning range are obtained through the driver's perspective, and at the same time, the devices within the signal aspect display range are scanned and obtained. Then, the devices within the driver's perspective scanning range and the devices within the signal aspect display range are the devices that may cause occlusion; further, according to the coordinate positions of the connection line and the devices that may cause occlusion, the occluding devices are determined, and the display blind area is determined based on the signal aspect display range and the contour coordinates of the occluding devices.

5. A signal aspect display inspection system based on BIM, characterized in that, it includes at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute a signal aspect display inspection method according to any one of claims 1 to 3.

6. A computer-readable medium, characterized in that, instructions executable by a processor are stored thereon, and when the instructions are executed by the processor, the processor executes a signal aspect display inspection method according to any one of claims 1 to 3.

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