CN109933835B - Method for simulating insulating drainage wire in virtual reality environment based on Unity software - Google Patents
Method for simulating insulating drainage wire in virtual reality environment based on Unity software Download PDFInfo
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- CN109933835B CN109933835B CN201811625949.5A CN201811625949A CN109933835B CN 109933835 B CN109933835 B CN 109933835B CN 201811625949 A CN201811625949 A CN 201811625949A CN 109933835 B CN109933835 B CN 109933835B
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Abstract
The invention discloses a simulation method of an insulated drainage wire in a virtual reality environment based on Unity software, which comprises the following steps: simulating a cable, establishing a straight line ABCD, wherein two middle nodes BC respectively represent the connection points of a wire clamp and a drainage wire and the connection points of the drainage wire and a power component, and determining the length of the cable according to the distance between the BC nodes; editing a point A or a point D at any position in space according to the obtained cable length, and simulating the curvature deformation state of the drainage wire by using a Bezier curve formula to enable the drainage wire BC to be in curve deformation; adding an insulating protective layer of a 10KV cable conductor mapping simulation drainage wire, and creating a 10KV cable conductor drainage wire; selecting a first fixing point B and arranging the first fixing point B on the cable clamp to fix the end B of the drainage wire at the first fixing point; selecting a second fixing point C and arranging the second fixing point C on the power component of the electric pole, so that the end C of the cable drainage wire is fixed at the position of the second fixing point; and adjusting the elasticity coefficient to finish the simulation of the 10KV cable.
Description
Technical Field
The invention belongs to the technical field of power simulation of physical systems, and particularly relates to a simulation method of an insulated drainage wire in a virtual reality environment based on Unity software.
Background
The Unity3D engine of the Unity Technologies company in UK is integrated three-dimensional simulation software integrating modeling, physical simulation and visualization Technologies, integrating three-dimensional simulation Technologies and the like, and is a three-dimensional simulation platform which has the widest application range and is most popular in the world at present. With the development of virtual reality technology, unity3D has been successfully applied to a series of fields such as aerospace, automotive engineering, railway vehicles, industrial machinery, engineering machinery, and power technology for simulation. The Unity is based on various physical systems, comprises a plurality of professional modules and professional field three-dimensional virtual simulation development software, and can be used for establishing a virtual reality scene for replicating the physical systems.
With the development of power technology, reliability of power utilization and high-quality service become more and more important, so the proportion of live working in power production is increasing, especially in emergency repair and replacement and maintenance of power equipment, however, due to natural aging of electrical equipment and irresistible influence of external force, a drop-out fuse fault or damage is often encountered in daily work, so that a team is required to perform daily maintenance and replace the equipment. The operation flow of replacing the drop-out fuse is complex, insulation measures must be set in place, before replacement, the insulation drainage wires need to be installed at two ends of the fault drop-out fuse for drainage in the traditional operation process, and the insulation drainage wires are not convenient to fix in operation, so that the whole operation process consumes long time, the labor intensity of operators is high, and the drop-out fuse is difficult to replace.
Aiming at the technical problems, it is actually necessary to perform analog simulation on the insulated drainage wire in the Unity software, so as to improve the replacement efficiency in a real maintenance scene. However, the Unity software does not have the insulating drainage wire model, which contains more nonlinear contacts, so that the calculation is easy to be unconverged, and the Unity software is not suitable for simulating the insulating drainage wire. In addition, the paths of the rope objects are connected together through joints, and the realization is more complicated.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a simulation method of an insulated drainage wire in a virtual reality environment based on Unity software, wherein an insulated drainage wire-rope model is established in the Unity software, the motion relation and the stress relation of a rope are simulated and described by using a mathematical relation, and the nonlinear motion of the rope in the stress process is solved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a simulation method of an insulated drainage wire in a virtual reality environment based on Unity software comprises the following steps:
simulating a cable, establishing a straight line ABCD, wherein two middle nodes BC respectively represent a connecting point of a wire clamp and a drainage wire and a connecting point of the drainage wire and an electric component, and determining the length of the cable according to the distance between the nodes BC;
editing a point A or a point D at any position in space according to the obtained cable length, and simulating the curvature deformation state of the drainage wire by using a Bezier curve formula to enable the drainage wire BC to be in curve deformation;
adding an insulating protective layer of a 10KV cable wire mapping simulation drainage wire, and creating a 10KV cable wire drainage wire;
first fixing point FIX selected from B and arranged on cable clamp 1 Making the B end of the drainage wire at the first fixing point FIX 1 The position is fixed;
selecting a second fixing point FIX 2C and arranged on the power component of the electric pole, and fixing the end C of the cable drainage wire at the position of the second fixing point FIX 2;
and adjusting the elasticity coefficient to finish the simulation of the 10KV cable.
The invention has the following beneficial effects: the motion and stress characteristics of the whole insulated drainage wire can be analyzed, the influence factors of elastic deformation, weight transfer and relaxation tension of the cable are fully considered, the simulation accuracy can be ensured, the modeling method is simplified, and the calculation efficiency is improved.
Drawings
FIG. 1 is a schematic view of an insulated drain-cord model for a Unity software-based simulation method of an insulated drain in a virtual reality environment according to an embodiment of the present invention;
fig. 2 is a schematic view of an application state of an insulating drainage wire based on Unity software in a simulation method in a virtual reality environment according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the embodiment of the invention discloses a simulation method of an insulated drainage wire in a virtual reality environment based on Unity software, which comprises the following steps:
B(t)＝P 0 (1-t) 3 +3P 1 t(1-t) 2 +3P 2 t 2 (1-t)+P 3 t 3 ，t∈[0，1]；
see, as shown in FIG. 1, P 0 Denotes point B, P 1 Denotes point A, P 2 Denotes D Point, P 3 And C represents a point C, wherein the position of BC is fixed, and BC is an insulated drainage wire. B (t) is a point on the drainage line and changes with the increase of t. The path of B (t) is the curvature of the drainage wire. t ranges from 0 to 1.
Step 3, adding an insulating protective layer of the 10KV cable conductor mapping simulation drainage wire, and creating the 10KV cable conductor drainage wire;
step 4, selecting a first fixing point FIX1 of the B end and arranged on the cable clamp, and fixing the B end of the drainage wire at the position of the first fixing point FIX 1;
step 5, selecting C and arranging a second fixed point FIX2 on the power component of the electric pole, so that the end C of the cable drainage wire is fixed at the position of the second fixed point FIX 2;
and 6, adjusting the elasticity coefficient to finish the simulation of the 10KV cable.
The simulation method provided by the embodiment of the invention can analyze the overall movement and stress characteristics of the cable, fully considers the influence factors of elastic deformation, weight transfer and relaxation tension of the cable, can ensure the accuracy of simulation, simplifies the modeling method and improves the calculation efficiency.
The present invention is described in further detail below by way of specific examples. This example provides a simulation of insulated drain wires for a virtual reality, 10KV power operation, which typically includes a plurality of insulated drain wire-cord members. Under the existing computing conditions, the simulation of the length of 3-6 meters is almost difficult to complete by applying a discrete joint simulation rope by adopting the Unity software. In this example, the insulating drainage wire-rope simulation method of the present invention was used to simulate the installation of a drainage wire, and included the following steps:
(1) And (2) establishing mechanical models of a bearing crosspiece, a lightning arrester, a fuse, a cable and the like, and establishing an overall mechanical simulation model of the electric pole system according to the motion and stress transmission relationship among the bearing crosspiece, the lightning arrester, the fuse, the cable and the like (as shown in figure 2).
(2) An insulated drain-cord model was created between the cable and the fuse (as per the method of steps 1-6 above), respectively.
(3) According to the specification parameters of the electric pole, the mechanical properties of the cable and the insulating drainage wire are respectively subjected to numerical simulation, and the elastic coefficient, the tensile value, the tensile rigidity and the compressive rigidity of the insulating drainage wire are obtained.
(4) The insulating drainage wire model method is adopted in Unity software, and the simulation result of the virtual reality power operation scene is as follows: the insulated drainage wire is real under the action of external force in a virtual reality scene.
(5) During the power training operation, the operating line nose interacts with the corresponding power component in the scene. Such as: the wire lug is mounted on the fuse.
By adopting the insulating drainage wire-rope simulation method in the steps 1-6, the overall movement and stress characteristics of the insulating drainage wire-rope simulation method can be analyzed, the influence factors of elastic deformation, weight transfer and relaxation tension of the cable are fully considered, the simulation accuracy can be ensured, the modeling method is simplified, and the calculation efficiency is improved.
It is to be understood that the exemplary embodiments described herein are illustrative and not restrictive. While one or more embodiments of the present invention have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (1)
1. A simulation method of an insulated drainage wire in a virtual reality environment based on Unity software is characterized by comprising the following steps:
simulating a cable, establishing a straight line ABCD, wherein two middle nodes BC respectively represent a connecting point of a wire clamp and a drainage wire and a connecting point of the drainage wire and an electric component, and determining the length of the cable according to the distance between the nodes BC;
editing a point A or a point D at any spatial position according to the obtained cable length, and simulating the curvature deformation state of the drainage wire by using a Bezier curve formula to deform the drainage wire BC curve;
adding an insulating protective layer of a 10KV cable wire mapping simulation drainage wire, and creating a 10KV cable wire drainage wire;
first fixing point FIX of B and arranged on cable clamp 1 Making the B end of the drainage wire at the first fixing point FIX 1 The position is fixed;
selecting a second fixing point FIX2 which is C and is arranged on the power component of the electric pole, and fixing the end C of the cable drainage wire at the position of the second fixing point FIX 2;
adjusting the elasticity coefficient to complete the simulation of the 10KV cable;
the method further comprises the following steps of carrying out drainage wire installation simulation:
establishing a mechanical model comprising a bearing crosspiece, a lightning arrester, a fuse and a cable, and establishing an overall force simulation model of the electric pole system according to the relation of motion and stress transmission;
respectively establishing an insulated drainage wire-rope model between a cable and a fuse;
according to the specification parameters of the electric pole, the mechanical properties of the cable and the insulating drainage wire are respectively subjected to numerical simulation, and the elastic coefficient, the tensile value, the tensile rigidity and the compressive rigidity of the insulating drainage wire are obtained.
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| CN105184030A (en) * | 2015-11-02 | 2015-12-23 | 北京理工大学 | Flexible cable pose simulation method and device based on bending composite mass-spring model |
| CN107240327A (en) * | 2017-07-19 | 2017-10-10 | 大连交通大学 | A kind of railcar real time execution parameters simulation method based on virtual reality |
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| CN105184030A (en) * | 2015-11-02 | 2015-12-23 | 北京理工大学 | Flexible cable pose simulation method and device based on bending composite mass-spring model |
| CN107240327A (en) * | 2017-07-19 | 2017-10-10 | 大连交通大学 | A kind of railcar real time execution parameters simulation method based on virtual reality |
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