JP2021124935A - Evaluation support device, evaluation support method, and evaluation support program - Google Patents

Abstract

To provide a new technique pertaining to evaluation support of an electric wire model that can exhaustively grasp a movable area.SOLUTION: An evaluation support device includes: designation means for designating start point coordinates and end point coordinates of an electric wire mode, designating each fixed value of a first parameter group in the electric wire model, and designating each range of a second parameter group in the electric wire model; shape determination means for determining a shape of the electric wire model on the basis of the start point coordinates, the end point coordinates, each fixed value of the first parameter group, and each range of the second parameter group, and evaluation means for determining a movable range of the electric wire model on the basis of each of the shapes determined by the shape determination means.SELECTED DRAWING: Figure 8

Description

The present invention relates to an evaluation support device, an evaluation support method, and an evaluation support program.

Prevention of contact accidents caused by the movable area of overhead power lines is an important factor in the design and installation of overhead power lines such as train lines and power transmission lines. For this reason, when constructing overhead power lines, it is necessary to secure the distance from other equipment by the specified numerical value.

The movable part related to the overhead electric wire may be generated by an external force or the like applied to the overhead electric wire. Therefore, it is necessary to grasp the movable area in consideration of the design limit of the overhead power line.

Here, an example is known in which the shape of an overhead electric wire is grasped instantaneously by imaging an actual overhead electric wire, but it cannot be said that the example is a method that can comprehensively grasp the movable area.

Since the streaks are loosened and swayed due to the influence of outside air temperature and wind, it is necessary to use complicated calculation formulas when designing, and there are cases where only the result of the two-dimensional shape can be expressed. Since there are many, it is difficult to express the movable area as an area where the streaks can be located, and a great deal of cost is incurred in risk management during design and construction.

Patent Document 1 is a device that detects the state of a branch line attached to a pole attached to a road surface by using three-dimensional point cloud data representing three-dimensional coordinates at a point on the surface of an outdoor structure acquired from a measuring unit. Then, a creating means for creating 3D model data in which the branch line is modeled in 3D based on the 3D point cloud data, and a branch line length, slackness, and position of the branch line based on the 3D model data. An invention relating to an equipment state detection device having a calculation means for calculating information is disclosed.

The invention described in Patent Document 1 can accurately detect the state of equipment to be managed outdoors installed, but it cannot be said that it is a method that can comprehensively grasp the movable area as in the above example.

Japanese Unexamined Patent Publication No. 2019-148464

In view of the above circumstances, it is an object to be solved by the present invention to provide a new technique related to evaluation support of an electric wire model capable of comprehensively grasping a movable area.

In order to solve the above problems, the present invention is an evaluation support device, in which the start point coordinates and the end point coordinates of the electric wire model are specified, the fixed values of the first parameter group in the electric wire model are specified, and the electric wire model is specified. The shape of the electric wire model based on the designation means for designating each range of the second parameter group in the above, the start point coordinates, the end point coordinates, the fixed values of the first parameter group, and the respective ranges of the second parameter group. It has a shape determining means for determining the shape, and an evaluation means for determining a movable region of the electric wire model based on each of the shapes determined by the shape determining means.

With such a configuration, the present invention can perform a simulation that can comprehensively grasp the movable area of the electric wire model, so that it is possible to avoid a contact accident caused by the movable area of the overhead electric wire. Can contribute. Further, with such a configuration, the present invention can evaluate the movable region related to the electric wire model by a simple simulation such as based on the designation of coordinates and parameters.

In a preferred embodiment of the present invention, each of the first parameter groups indicates a physical quantity corresponding to an internal factor in the electric wire model. With such a configuration, the present invention can introduce parameters to the simulation of the movable region related to the electric wire model while separating the internal factors and the external factors related to the electric wire model.

In a preferred embodiment of the present invention, the first parameter group includes a cross-sectional area. With such a configuration, the present invention can introduce a geometric feature related to the electric wire model as a parameter to the simulation of the movable region related to the electric wire model.

In the preferred embodiment of the present invention, the first parameter group includes an elastic modulus. With such a configuration, the present invention can introduce the structural mechanical features related to the electric wire model as parameters for the simulation of the movable region related to the electric wire model.

In the preferred embodiment of the present invention, the first parameter group includes a coefficient of linear expansion. With such a configuration, the present invention can introduce the aspect of the response to the environmental change related to the electric wire model as a parameter to the simulation of the movable region related to the electric wire model.

In a preferred embodiment of the present invention, each of the second parameter groups indicates a physical quantity corresponding to an external factor in the electric wire model. With such a configuration, the present invention can introduce parameters to the simulation of the movable region related to the electric wire model while separating the external factors and the internal factors related to the electric wire model.

In a preferred embodiment of the invention, the second parameter group comprises temperature. With such a configuration, the present invention introduces an environmental factor as an external factor as a parameter into the simulation of the movable region related to the electric wire model, and simulates the dimensional change due to the temperature change related to the electric wire model. It can be carried out.

In a preferred embodiment of the invention, the second parameter group includes wind power. With such a configuration, the present invention introduces an environmental factor as an external factor into the simulation of the movable region related to the electric wire model as a parameter, and changes the shape due to the application of an external force by the wind to the electric wire model. Simulation can be performed.

In a preferred embodiment of the invention, the second parameter group comprises tension. With such a configuration, the present invention introduces an environmental factor as an external factor as a parameter into the simulation of the movable region related to the electric wire model, and the shape change due to the application of an external force due to the peripheral structure to the electric wire model. Can be simulated.

In a preferred embodiment of the present invention, the second parameter group includes the degree of ice coverage. With such a configuration, the present invention introduces an environmental factor as an external factor into the simulation of the movable region related to the electric wire model as a parameter, and changes the shape due to the application of an external force due to snow accumulation on the electric wire model. Simulation can be performed.

In a preferred embodiment of the present invention, the evaluation means determines an interference region between the movable region of the electric wire model and the structure model. With such a configuration, the present invention can predict the interference region between the electric wire models with high accuracy, and thus can contribute to the avoidance of contact accidents caused by the movable region in the overhead electric wire.

In order to solve the above problems, the present invention is an evaluation support method, in which the start point coordinates and the end point coordinates of the electric wire model are specified, the fixed values of the first parameter group in the electric wire model are specified, and the electric wire model is specified. The shape of the electric wire model is determined based on the designated step for designating each range of the second parameter group in the above, the start point coordinates, the end point coordinates, the fixed values of the first parameter group, and the respective ranges of the second parameter group. The computer is made to execute the shape determination step to be performed and the evaluation step of determining the movable area of the electric wire model based on each of the shapes determined by the shape determination step.

In order to solve the above problems, the present invention is an evaluation support program in which a computer specifies start point coordinates and end point coordinates of an electric wire model, and specifies fixed values of the first parameter group in the electric wire model. The electric wire is based on a designation means for designating each range of the second parameter group in the electric wire model, the start point coordinates, the end point coordinates, the fixed values of the first parameter group, and the respective ranges of the second parameter group. It functions as a shape determining means for determining the shape of the model and an evaluation means for determining the movable region of the electric wire model based on each of the shapes determined by the shape determining means.

The present invention can provide a novel technique for supporting the evaluation of an electric wire model that can comprehensively grasp the movable region.

The hardware block diagram which concerns on one Embodiment of this invention. The functional block diagram which concerns on one Embodiment of this invention. The whole flowchart which concerns on one Embodiment of this invention. The flowchart of shape determination which concerns on one Embodiment of this invention. Explanatory drawing of shape determination which concerns on one Embodiment of this invention. Explanatory drawing of shape determination which concerns on one Embodiment of this invention. The flowchart of determination of the movable area which concerns on one Embodiment of this invention. The explanatory view of determination of the movable area which concerns on one Embodiment of this invention.

In the present specification, the configuration, the action and effect, and the like according to the embodiment of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiment, and various configurations may be adopted. Further, in one embodiment of the present invention, a part of the configuration in each of the respective embodiments may be adopted with each other as long as the realization of the desired action and effect of the one embodiment of the present invention is not hindered.

Each of the evaluation support device, the evaluation support method, the evaluation support program, and the evaluation support program medium according to the present invention has the same effect. As an example, each of the means in the evaluation support device and the like and each of the steps in the evaluation support method have the same effect.

It can be understood that the action and effect of each means in each of the evaluation support device, the evaluation support program, and the evaluation support program medium according to the present invention are exerted by an arithmetic unit such as a processor described later. In addition, it can be understood that the action and effect of each step of the evaluation support method is also realized by the arithmetic unit such as the processor.

The evaluation support program medium according to the present invention is a recording medium in which the evaluation support program is stored, and is a non-transient recording medium such as a flash memory. The evaluation support program medium has an effect that at least a part of the evaluation support program can be installed on a known or conventional computer.

<Hardware configuration>
As illustrated in FIG. 1, the evaluation support device, the evaluation support method, the evaluation support program, and the evaluation support program medium include (use) a known or conventional computer device 1. The computer device 1 has at least an arithmetic unit 11, a main storage device 12, an auxiliary storage device 13, and a bus interface. Each of these devices is appropriately used in order to realize the effects exhibited by the present invention. In addition to the above configuration, the computer device 1 may include an input device 14, an output device 15, and a communication device 16.

The computer device 1 according to the embodiment of the present invention may be one terminal, one server device, or a combination of the terminal and the server device, and is composed of a plurality of server devices. It may be a group of servers. Each of the one or more computer devices has at least a portion of each means that the computer device 1 has.

The arithmetic unit 11 has a known or conventional processor capable of executing an instruction set. The main storage device 12 has a known or conventional volatile memory capable of storing an instruction set. The auxiliary storage device 13 has a recording medium such as a known or conventional non-volatile memory capable of recording a program or the like. The input device 14 is, for example, a known or conventional interface capable of inputting intentions. The output device 15 is a known or conventional interface that enables visual, auditory, and tactile notification. The communication device 16 has a known or conventional network interface based on a wired or wireless system for realizing a connection to a network. The network is appropriately based on known or conventional protocols (referring to the transport layer and the application layer).

<Functional block>
As illustrated in FIG. 2, the computer device 1 specifies the start point coordinates 1001 and the end point coordinates 1002 of the electric wire model 1000, specifies the fixed values of the first parameter group 1100 in the electric wire model 1000, and specifies the electric wire model 1000. The designated means 101 (designated step 101s) for designating each range of the second parameter group 1200 in the above is included (made to be executed by the processor).

The computer device 1 determines the shape of the electric wire model 1000 based on the fixed values of the start point coordinates 1001, the end point coordinates 1002, the first parameter group 1100, and the respective ranges of the second parameter group 1200 (shape determination). Step 102s) (make the processor execute).

"Determining the shape of the electric wire model 1000" in the description in the present specification means determining the distribution of electric wires between the start point coordinates 1001 and the end point coordinates 1002.

The shape determining means 102 determines the shape of the electric wire model 1000 based on a combination of a plurality of parameters, such as based on each of the first parameter group as a fixed value and each of the second parameter group as a range. Perform (simulation). At this time, the combination may be all combinations or some combinations.

The computer device 1 has evaluation means 103 (evaluation step 103s) for determining the movable region 1300 of the electric wire model 1000 based on each of the shapes determined by the shape determining means 102 (to be executed by the processor).

In the description of the present specification, "determining the movable area 1300 of the electric wire model 1000" means that the thin wire is changed in shape and distribution when the thin wire structure such as the electric wire shown by the electric wire model 1000 is loosened or the like. It refers to determining the region in space that a structure can take (can exist).

<First parameter group 1100>
Each of the first parameter group 1100 shows, as an example, a fixed value of a physical quantity corresponding to an internal factor in the electric wire model 1000. As an example, the "internal factor" in the description in the present specification is a design parameter uniquely determined at the design stage.

The parameters constituting the first parameter group 1100 are, for example, the cross-sectional area, sag, elastic modulus, linear expansion coefficient or unit weight of the electric wire model 1000, and if it is a design parameter indicating the characteristics of the electric wire, the type thereof. There is no limit to. At this time, the parameter may be treated in the form of a function in which the second parameter described later, such as temperature dependence, is used as a variable.

<Second parameter group 1200>
As an example, each of the second parameter group 1200 shows the range of the physical quantity corresponding to the external factor in the electric wire model 1000. As used herein, the term "external factor" refers to an environmental factor, for example.

The parameters constituting the second parameter group 1200 are, for example, the temperature of the electric wire model 1000, the wind force / tension applied as an external force to the electric wire model 1000, and the degree of snow cover of the electric wire model 1000. There is no limitation on the type as long as it is a parameter indicating an environmental factor.

The parameters constituting the second parameter group 1200 according to the embodiment of the present invention are, for example, relative to a thin linear structure such as an electric wire shown by the electric wire model 1000, by a moving body such as a bird or beast in the direction of gravity. It may be an external force generated by applying or the like.

The parameters constituting the second parameter group 1200 according to the embodiment of the present invention are, for example, external forces applied to a thin linear structure such as an electric wire shown by the electric wire model 1000 due to vibration such as an earthquake. It may be.

The parameter type exemplified as the first parameter group 1100 (fixed value) according to one embodiment of the present invention may be appropriately treated as the second parameter group 1200 (range). Specifically, the temperature may be treated as one of the second parameter group 1200. The parameter type exemplified as the second parameter group 1200 (range) according to one embodiment of the present invention may be treated as the first parameter group 1100 (fixed value).

The first parameter group 1100 and the second parameter group 1200 may be configured to be appropriately referred to in a state of being stored in the database DB in advance.

<Flowchart (whole process)>
As illustrated in FIG. 3, the process according to the embodiment of the present invention is performed according to the following procedure. In one embodiment of the present invention, first, the designating means 101 designates the start point coordinates 1001 and the end point coordinates 1002 of the electric wire model 1000. Next, the designation means 101 designates the first parameter group 1100. Next, the shape determining means 102 models the electric wire model 1000 by determining the shape of the electric wire model 1000. Finally, the evaluation means 103 determines the movable region 1300 of the electric wire model 1000.

The "start point coordinates 1001 and end point coordinates 1002" in the description in the present specification may be arbitrarily input, specified, and set. The designation of the start point coordinate 1001 and the end point coordinate 1002 according to the embodiment of the present invention may be performed based on the measurement point cloud data, may be performed based on the existing CAD model, and is detected from a predetermined image by image processing. It can be done arbitrarily in space, and there is no limit to the method.

<Flowchart (modeling of electric wire model 1000)>
The modeling of the electric wire model 1000 according to the embodiment of the present invention will be described with reference to FIGS. 4, 5 and 6. In one embodiment of the present invention, first, the shape determining means 102 defines a coordinate system 0 including a first axial direction 0x, a second axial direction 0y, and a third axial direction 0z. Next, the shape determining means 102 determines the span distance 1003 and the height difference 1004 based on the start point coordinates 1001 and the end point coordinates 1002. Next, the shape determining means 102 defines a projection plane 0xy including a first axial direction 0x and a second axial direction 0y. Next, the shape determining means 102 determines the shape of the electric wire model 1000 on the projection plane 0xy based on a known mathematical model or the like. Finally, the shape determining means 102 converts the shape-determined electric wire model 1000 into the overall coordinate system.

The "first axis direction 0x" in the description in the present specification refers to a direction in which the component in the gravity direction is set to zero in the direction connecting the start point coordinates 1001 and the end point coordinates 1002. At this time, the first axis direction 0x does not always coincide with the horizontal direction of the entire coordinate system.

The "second axial direction 0y" in the description in the present specification refers to a direction orthogonal to the first axial direction 0x and such that the component in the gravitational direction is zero. In addition, the "third axis direction 0z" in the description in this specification coincides with the gravity direction which is the height direction in the whole coordinate system.

Since the shape determining means 102 according to the embodiment of the present invention models the electric wire model 1000 based on the projection plane 0xy, it can be understood that the calculation cost related to the modeling can be reduced.

The shape determining means 102 according to the embodiment of the present invention may be configured to perform modeling of the electric wire model 1000 in a dew / three-dimensional manner without using a projection plane such as a projection plane 0xy.

<Flowchart (determination of movable area 1300)>
The determination of the movable region 1300 according to the embodiment of the present invention will be described with reference to FIGS. 7 and 8. In one embodiment of the present invention, first, the shape determining means 102 newly defines a projection plane 0yz including 0y in the second axial direction and 0z in the third axial direction. Next, the shape determining means 102 determines the shape of the electric wire model 1000 and projects it on the projection plane 0 yz. Next, the evaluation means 103 determines the movable region 1300 having a two-dimensional shape based on the projected shape. When the adjacent projection planes 0yz can be newly defined, the process shifts to the definition of the projection planes 0yz. When the adjacent projection planes 0yz cannot be newly defined, the evaluation means 103 combines the movable regions 1300 of the projection planes 0yz to determine the movable region 1300 having a three-dimensional shape.

In the description of the present specification, "the adjacent projection planes 0yz can be defined" means that the projection planes 0yz can be defined so as not to include the start point coordinates 1001 or the end point coordinates 1002.

The evaluation means 103 according to the embodiment of the present invention determines an interference region 1500 indicating an overlapping region between the movable region 1300 of the electric wire model 1000 and the structure model 1400.

The structure model 1400 according to the embodiment of the present invention may be the movable region 1300 of the electric wire model 1000.

The "electric wire model 1000" in the description of the present specification refers to a known or conventional electric wire, and includes an overhead line, a telephone line, a train line, a communication line, an aerial line, a contact line and an overhead line, an overhead ground wire, an overhead electric wire, and the like. Refers to multiple types of fine wire structures and refers to known curves such as catenary curves.

The "structure model 1400" in the description herein refers to a known or conventional structure around the wire. The structure is, for example, a plurality of types of columnar structures including railroad tracks, overhead wire pillars, and the like. In addition, the structure may include, for example, known structures such as trolley lines, overhead lines, sleepers, insulators, beams, and hangers located around railway vehicles.

Since the present invention can realize evaluation support of an electric wire model that can comprehensively grasp a movable area, it can contribute to prevention of contact accidents related to overhead electric wires.

0: Coordinate system 0x: 1st axis direction 0xy: Projection plane 0y: 2nd axis direction 0yz: Projection plane 0z: 3rd axis direction 1: Computer device 11: Computational device 12: Main storage device 13: Auxiliary storage device 14: Input device 15: Output device 16: Communication device 101: Designation means 101s: Designation step 102: Shape determination means 102s: Shape determination step 103: Evaluation means 103s: Evaluation step 1000: Electric wire model 1001: Start point coordinates 1002: End point coordinates 1003: Spacing distance 1004: Height difference 1100: First parameter group 1200: Second parameter group 1300: Movable area 1400: Structure model 1500: Interference area

Claims (13)

Designating means for designating the start point coordinates and end point coordinates of the electric wire model, specifying the fixed values of the first parameter group in the electric wire model, and specifying the respective ranges of the second parameter group in the electric wire model.
A shape determining means for determining the shape of the electric wire model based on the start point coordinates, the end point coordinates, the fixed value of each of the first parameter group, and the range of each of the second parameter group.
An evaluation support device having an evaluation means for determining a movable region of the electric wire model based on each of the shapes determined by the shape determining means. The evaluation support device according to claim 1, wherein each of the first parameter groups indicates a physical quantity corresponding to an internal factor in the electric wire model. The evaluation support device according to claim 2, wherein the first parameter group includes a cross-sectional area. The evaluation support device according to claim 2 or 3, wherein the first parameter group includes an elastic modulus. The evaluation support device according to any one of claims 2 to 4, wherein the first parameter group includes a coefficient of linear expansion. The evaluation support device according to any one of claims 1 to 5, wherein each of the second parameter groups indicates a physical quantity corresponding to an external factor in the electric wire model. The evaluation support device according to claim 6, wherein the second parameter group includes temperature. The evaluation support device according to claim 6 or 7, wherein the second parameter group includes wind power. The evaluation support device according to any one of claims 6 to 8, wherein the second parameter group includes tension. The evaluation support device according to any one of claims 6 to 9, wherein the second parameter group includes the degree of ice coverage. The evaluation support device according to any one of claims 1 to 10, wherein the evaluation means determines an interference region between the movable region of the electric wire model and the structure model. A designated step of designating the start point coordinates and the end point coordinates of the electric wire model, specifying the fixed values of the first parameter group in the electric wire model, and specifying the respective ranges of the second parameter group in the electric wire model.
A shape determination step of determining the shape of the electric wire model based on the start point coordinates, the end point coordinates, the fixed values of the first parameter group, and the respective ranges of the second parameter group.
An evaluation support method for causing a computer to execute an evaluation step of determining a movable area of the electric wire model based on each of the shapes determined by the shape determination step. A computer is used as a designating means for designating the start point coordinates and the end point coordinates of the electric wire model, specifying the fixed values of the first parameter group in the electric wire model, and specifying the respective ranges of the second parameter group in the electric wire model. ,
A shape determining means for determining the shape of the electric wire model based on the start point coordinates, the end point coordinates, the fixed value of each of the first parameter group, and the range of each of the second parameter group.
An evaluation support program that functions as an evaluation means for determining a movable region of the electric wire model based on each of the shapes determined by the shape determining means.

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