Detection Method and System for Coverage Effectiveness of Base Station Location Function in Substation

Abstract

The present invention proposes a detection method and system for the coverage effectiveness of the base station positioning function in a substation, which can quickly check whether any position in the substation can realize the base station positioning function based on the existing three-dimensional digital model and related elevation information of the substation. The proposed method is based on the microelement method, which ensures that the actual project needs to take into account both accuracy and calculation time, and can detect the effectiveness of the coverage of the base station positioning function in the substation without a complex optimization modeling process. It is simple and easy to use, and can be used to quickly check the rationality of the deployment of the project site positioning base station.

Description

Technical Field

[0001] The present invention belongs to the technical field of base station positioning, and particularly relates to a method and system for detecting the effectiveness of base station positioning function coverage in a substation. Background Art

[0002] As shown in the Figure 1 specification appendix, currently, positioning technologies based on communication targets have been widely used in power grid infrastructure projects for the positioning of on-site personnel and large construction machinery. However, in the actual application process, there are still problems such as inaccurate positioning and easy signal loss, which affect the actual positioning function experience and bring certain troubles to the normal management of the engineering site.

[0003] In the implementation of positioning technologies based on communication targets (UWB positioning technology, WIFI positioning technology, Bluetooth positioning technology, etc.), a certain number of positioning base stations need to be configured around the positioning area. The reasons for the problems of inaccurate positioning and easy signal loss in the actual use process at the engineering site are mainly that the positioning tag fails to receive the signal of the positioning base station, that is, the signal is blocked. Currently, the layout of positioning base stations at the engineering site mainly relies on empirical methods, and whether it can meet the on-site positioning requirements mainly depends on on-site actual measurements. For large substation projects with a large positioning range and many obstacles, the workload in this regard is large, time-consuming, and it is also a major problem that the positioning base station is not easy to disassemble and install after installation, resulting in a series of problems such as inaccurate positioning in some areas.

[0004] The closest prior art to the present invention is the Chinese patent: CN202110765864 - A method and system for optimizing the layout of positioning base stations in a substation project, but this solution still has a large room for improvement and cannot provide a method for detecting the effectiveness of base station positioning function coverage in a substation. Summary of the Invention

[0005] In view of this, in order to overcome the defects and deficiencies of the prior art, the purpose of the present invention is to provide a method and system for detecting the effectiveness of base station positioning function coverage in a substation, which can quickly check whether the base station positioning function can be realized at any position in the substation based on the existing three-dimensional digital model and relevant elevation information of the substation. The proposed method is based on the microelement method, which ensures the needs of engineering practice in terms of both accuracy and calculation time, and can detect the effectiveness of base station positioning function coverage in the substation without a complex optimization modeling process. It is simple and easy to implement and can be used to quickly check the rationality of the deployment of positioning base stations at the engineering site.

[0006] The present invention specifically adopts the following technical solutions:

[0007] A method for detecting the effectiveness of base station positioning function coverage in a substation, characterized by comprising the following steps:

[0008] Step S1: Determine the size of the smallest grid and three-dimensionally grid the area to be measured.

[0009] Step S2: Select the positions to be inspected within the substation.

[0010] Step S3: Search for the base stations within the effective range around the positions to be inspected.

[0011] Step S4: Solve the horizontal projection equation of the spatial line segment connecting the position to be inspected and the base station.

[0012] Step S5: Compare the relationship between the three-dimensional digital elevation of the substation and the spatial line segment, and draw a conclusion on whether the signal can be received at the position to be inspected.

[0013] Further, in Step S1: According to the sizes of the electrical equipment and buildings and structures in the area to be measured within the substation, determine the size of the smallest grid, and divide the three-dimensional space of the area to be measured into multiple grids of size i×j×k.

[0014] Further, in Step S3, select any position in the substation to be inspected, and search for the positioning base stations within the preset effective range of the positioning base station signal coverage based on the floor plan; assume that the distances between N positioning base stations and the position of the substation to be inspected are within the effective range, and connect the searched positioning base stations and the position of the substation to be inspected to obtain N spatial line segments.

[0015] Further, in Step S4, calculate the horizontal projections of the N spatial line segments on the floor plan to obtain N line segments on the floor plan; for each line segment, gradually traverse two adjacent points on the line according to the infinitesimal element method, calculate and substitute into the spatial line segment equation to obtain two coordinate values (x1, y1, z1) and (x2, y2, z2), and calculate the height h of the spatial line segment equation at this horizontal coordinate based on the horizontal coordinates (x3, y3) of the midpoint of the two points; and based on the elevation of the three-dimensional digital model, obtain the actual three-dimensional spatial coordinates (x3, y3, z3) of the facilities within the substation.

[0016] Further, in Step S5, for each line segment corresponding to a positioning base station, perform the following calculations: Compare h and z3 calculated in Step S4: If h>z3, it means the signal is not blocked in this infinitesimal segment, and continue to traverse; otherwise, it means the signal is blocked in this infinitesimal segment, stop traversing, and the signal from the positioning base station cannot be received at this position within the substation.

[0017] And, a detection system for the coverage effectiveness of the base station positioning function within a substation, characterized in that: it includes a memory and a processor, and a computer program is stored on the memory, and the processor runs this computer program to implement the method described above.

[0018] Compared with the prior art, the present invention and its preferred embodiments have the following advantages:

[0019] 1. The proposed inspection steps are simple and easy to implement. Through a mathematical model, using the equations of line segments on two two-dimensional planes (the horizontal plane of the substation and the vertical plane of the horizontal plane), it is possible to inspect whether there is signal occlusion between any position and the positioning base station, saving the time for solving the space straight-line equation and the time for comparing whether there is occlusion in space.

[0020] 2. Using the infinitesimal method, traverse each point on the line segment to be inspected, and compare the height of the points on the line segment with the elevation value of the three-dimensional digital model of the substation to determine and inspect whether there is signal occlusion between any position and the positioning base station, that is, whether any position in the substation is within the effective coverage range of the positioning base station, ensuring the needs of engineering practice to balance accuracy and calculation time.

[0021] 3. It makes up for the blank of the prior art method, effectively solves the problem of validating the layout of the positioning base station in substation engineering, and provides technical support for further carrying out the optimization layout work of the positioning base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0023] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a schematic diagram of the base station positioning principle.

[0025] Figure 2 It is a schematic layout diagram of the 10kV distribution device room in the substation project of the positioning base station in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the features and advantages of this patent more obvious and understandable, specific embodiments are given below and described in detail as follows:

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The components described and illustrated in the accompanying drawings here can be combined and designed in different configurations. Therefore, the detailed description of the selected embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but only represents the selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] This embodiment provides a method for detecting the coverage effectiveness of the base station positioning function in a substation, including the following steps:

[0030] Step S1: Determine the size of the smallest grid and three-dimensionally grid the area to be measured;

[0031] Specifically, according to the sizes of the electrical equipment and buildings in the area to be measured in the substation, determine the size of the smallest grid, and divide the three-dimensional space of the area to be measured into multiple grids of size i×j×k.

[0032] Step S2: Select the positions to be inspected in the substation;

[0033] Step S3: Search for the base stations within the effective range around the positions to be inspected;

[0034] Specifically, select any position in the substation to be inspected, and search for the positioning base stations within the preset effective range of the positioning base station signal coverage based on the floor plan; assume that the distances between N positioning base stations and the position of the substation to be inspected are within the effective range, and connect the searched positioning base stations with the position of the substation to be inspected to obtain N spatial line segments.

[0035] Step S4: Solve the horizontal projection equation of the spatial line segment connecting the position to be inspected and the base station;

[0036] Specifically, calculate and solve the horizontal projections of N line segments in space on the floor plan to obtain N line segments on the floor plan. For each line segment, gradually traverse two adjacent points on the line segment according to the infinitesimal element method, calculate and substitute them into the equation of the line segment in space to obtain two coordinate values (x1, y1, z1) and (x2, y2, z2), and calculate the height h of the equation of the line segment in space at the horizontal coordinates (x3, y3) of the midpoint of the two points. Based on the elevation of the 3D digital model, obtain the actual 3D spatial coordinates (x3, y3, z3) of the facilities in the substation. That is, compare the height of the "virtual" line segment with the actual height of the facilities in the substation. If it is higher, it means there is no occlusion.

[0037] Step S5: Compare the relationship between the 3D digital elevation of the substation and the spatial line segment to obtain a conclusion on whether the signal can be received at the position to be tested.

[0038] Specifically, for each line segment corresponding to a positioning base station, perform the following calculations: Compare h and z3 calculated according to Step S4: If h > z3, it means the signal is not occluded in this infinitesimal element segment, and continue traversing; otherwise, it means the signal is occluded in this infinitesimal element segment, stop traversing, and the signal from the positioning base station cannot be received at this position in the substation.

[0039] This embodiment can detect the effectiveness of the coverage of the base station positioning function in the substation. Based on the existing 3D digital model and relevant elevation information of the substation, it can quickly test whether the base station positioning function can be realized at any position in the substation. The proposed method is based on the infinitesimal element method, which ensures the needs of engineering practice in terms of both accuracy and calculation time, and can detect the effectiveness of the coverage of the base station positioning function in the substation without a complex optimization modeling process. It is simple and easy to implement and can be used to quickly test the rationality of the deployment of the positioning base station at the engineering site.

[0040] In this embodiment, taking the 10kV switchgear room of a certain substation project as an example, the substation is as Figure 2 shown. The length of this 10kV switchgear room is 40.5 meters and the width is 9 meters. Taking the point at the bottom left corner in the space of the 10kV switchgear room (i.e., the point on the horizontal ground of the room where Axis 6 and Axis A intersect on the floor plan) as the coordinate origin, establish a spatial rectangular coordinate system (X, Y, Z). The dimensions of the main electrical equipment in the 10kV switchgear room are as shown in the following table:

[0041]

[0042] According to the dimensions of the main electrical equipment, select the minimum division size of the 3D spatial grid of the 10kV switchgear room as 100×100×100mm, and use the point at the bottom left corner to represent the attributes of the grid.

[0043] The layout of the 10kV switchgear positioning base station is asFigure 2 As shown, the coordinates of each positioning base station are obtained according to the rectangular coordinate system as shown in the following table:

[0044]

[0045] Assume that the effective range R of the positioning base station signal coverage is 25m, that is, when the distance is greater than 25m, the positioning tag cannot receive the signal sent by the positioning base station, that is, the positioning tag cannot receive the positioning base station communication. Figure 2 Taking point A as an example, the positioning base stations located within the effective signal coverage range R are searched as follows: point A is located within the effective signal coverage range of positioning base stations 1, 2, and 3.

[0046] By executing the detection system for the coverage effectiveness of the base station positioning function in the substation proposed in this embodiment, the processor adopts Intel(R) Core(TM) i5-5200U 2.20GHz, runs the computer instructions in the system, and obtains the final base station positioning function coverage effectiveness result.

[0047] For ease of explanation, the process of detecting the effectiveness of the positioning function coverage between point A and base stations 1 and 2 is analyzed step by step.

[0048] First, step S2 is performed: the distance between point A and all positioning base stations in the 10kV power distribution device room is calculated, and the results with distances greater than R are eliminated, and the results with distances less than or equal to R are retained. Specifically, there are positioning base stations 1, 2, and 3.

[0049] Then, step S3 is executed: point A is connected to the position of the positioning base station 1 to obtain a line segment in space.

[0050] Then, step S4 is performed: the projection equation of the line segment connecting point A and the position of the positioning base station 1 on the horizontal plane is calculated.

[0051] Then execute step S5: take a step size of 50mm, gradually traverse two adjacent points on the line segment, calculate and substitute the line segment equation in space to obtain two coordinate values ​​(x1, y1, z1) and (x2, y2, z2), and use the horizontal coordinates (x3, y3) of the midpoint of the two points to calculate the height h of the line segment equation in space under the horizontal coordinates, obtain the elevation based on the three-dimensional digital model, and obtain the three-dimensional spatial coordinates of the substation here (x3, y3, z3).

[0052] Then, step S6 is executed: compare h and z3 calculated in step S5. If h>z3, it means that the signal is not blocked in the micro-element segment, and the traversal continues; otherwise, it means that the signal is blocked in the micro-element segment, and the traversal stops, and the location in the substation cannot receive the signal of the positioning base station.

[0053] After automatic execution by the computer, it is found that there is no obstruction between point A and base station 2, that is, point A can receive the signal of base station 2. Point A and base station 1 are blocked by network cabinet 1 and public measurement and control cabinet, that is, point A cannot receive the signal of base station 1.

[0054] In summary, in the embodiment, the method proposed in the present invention is used to detect the effectiveness of the coverage of the base station positioning function in the substation step by step, and can quickly check whether any position in the substation can realize the base station positioning function. The proposed method ensures that the actual project takes into account the needs of accuracy and calculation time, and can detect the effectiveness of the coverage of the base station positioning function in the substation without a complex optimization modeling process. It is simple and easy to use, and can be used to quickly check the rationality of the deployment of the project site positioning base station.

[0055] The method proposed in the present invention can be applied to various types of coverage effectiveness detection methods for engineering positioning base stations, including but not limited to UWB positioning base stations, RFID positioning base stations, WIFI positioning base stations, Bluetooth positioning base stations and positioning base stations of 5G communication networks.

[0056] The logic program design scheme in the above scheme provided in this embodiment can be stored in a computer-readable storage medium in a coded form and implemented in the form of a computer program, and the basic parameter information required for calculation is input through computer hardware, and the calculation result is output.

[0057] It should be understood by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0058] The present invention is described with reference to methods, devices (apparatus), and computer program products according to embodiments of the present invention. It should be understood that each process can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes.

[0059] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes.

[0060] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one process or multiple processes.

[0061] As described above, it is only a preferred embodiment of the present invention, and it is not a limitation to the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

[0062] This patent is not limited to the above best implementation manner. Anyone inspired by this patent can obtain other various forms of detection methods and systems for the effectiveness of base station positioning function coverage in a substation. All equal changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by this patent.

Claims

1. A detection method for the coverage effectiveness of the base station positioning function in a substation, characterized in that, it includes the following steps: Step S1: Determine the size of the minimum grid and three-dimensionally grid the area to be measured; Step S2: Select the positions to be tested in the substation; Step S3: Search for the base stations within the effective range around the positions to be tested; Step S4: Solve the horizontal projection equation of the spatial line segment connecting the position to be tested and the base station according to the infinitesimal method; Step S5: Compare the relationship between the three-dimensional digital elevation of the substation and the spatial line segment, and draw a conclusion on whether the signal is received at the position to be tested; In Step S3, select any position in the substation to be tested, and search for the positioning base stations within the preset effective range of the positioning base station signal coverage based on the floor plan; Suppose there are N positioning base stations whose distances from the position of the substation to be tested are within the effective range, connect the searched positioning base stations with the position of the substation to be tested to obtain N spatial line segments; In Step S4, calculate and solve the horizontal projections of the N spatial line segments on the floor plan to obtain N line segments on the floor plan; For each line segment, gradually traverse two adjacent points on the line segment according to the infinitesimal method, calculate and substitute into the spatial line segment equation to obtain two coordinate values (x1, y1, z1) and (x2, y2, z2), and calculate the height h of the spatial line segment equation at this horizontal coordinate based on the horizontal coordinates (x3, y3) of the midpoint of the two points; and based on the elevation of the three-dimensional digital model, obtain the actual three-dimensional spatial coordinates (x3, y3, z3) of the facilities in the substation; In Step S5, for each line segment corresponding to a positioning base station, perform the following calculations: Compare h and z3 calculated according to Step S4: If h>z3, it means that the signal is not blocked in this infinitesimal segment, and continue to traverse; otherwise, it means that the signal is blocked in this infinitesimal segment, stop traversing, and the positioning base station signal cannot be received at this position in the substation.

2. The detection method for the coverage effectiveness of the base station positioning function in a substation according to claim 1, characterized in that: In Step S1: According to the sizes of the electrical equipment and buildings in the area to be measured in the substation, determine the size of the minimum grid, and divide the three-dimensional space of the area to be measured into multiple grids of size i×j×k.

3. A detection system for the coverage effectiveness of the base station positioning function in a substation, characterized in that: It includes a memory and a processor, and a computer program is stored on the memory, and the processor runs the computer program to implement the method according to claim 1 or 2.

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