CN111739352A - Simulation method of central air conditioner virtual maintenance training system - Google Patents
Simulation method of central air conditioner virtual maintenance training system Download PDFInfo
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- CN111739352A CN111739352A CN202010492801.XA CN202010492801A CN111739352A CN 111739352 A CN111739352 A CN 111739352A CN 202010492801 A CN202010492801 A CN 202010492801A CN 111739352 A CN111739352 A CN 111739352A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
- G06Q50/205—Education administration or guidance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
Abstract
The invention discloses a simulation method of a central air conditioner virtual maintenance training system, and relates to the technical field of virtual simulation. The method comprises the following steps: designing a virtual maintenance training system of the central air conditioner; virtualizing a physical prototype of the central air conditioning unit into a digital prototype in 3D modeling software; importing a digital prototype and materials into the central air-conditioning virtual maintenance training system, constructing each virtual environment UI interface of the system, endowing the digital prototype with physical performance and dynamic function, and adding a role controller; recording the learning condition of a user in the system and the interaction condition with the system; and checking the equipment maintenance according to the interaction condition of the user and the system in the virtual scene. The principle of the central air-conditioning equipment can be quickly known by students, the maintenance operation of basic common faults can be learned, and the simulation teaching can be efficiently completed by interaction with the system.
Description
Technical Field
The invention relates to the technical field of virtual simulation, in particular to a simulation method of a central air conditioner virtual maintenance training system.
Background
With the popularity of VR games and VR movies, virtual reality technology has moved from the high-precision point field to the civilian field. Based on the characteristics of good immersion, interactivity and imagination of virtual reality, virtual reality technology is gaining popularity in more and more fields.
In the journal of the institute of urban institute of Hunan province (Nature science edition), volume 28, No. 4, pages 57-60, a set of virtual simulation system is designed and developed based on a three-dimensional modeling technology and a virtual engine simulation animation technology by taking a 300MW thermal generator set front pump as an object. The system is designed into three modules: equipment introduction, equipment installation and equipment disassembly. The system reasonably plans the disassembly and assembly sequence of the front pump equipment, and subdivides the installation process of the front pump into 9 steps; the disassembly process of the front pump is divided into 10 steps, and detailed and vivid simulation is carried out on the disassembly and assembly operation of the front pump of the thermal power plant. The dynamic virtual simulation breaks through the limitations of the traditional practical teaching and book teaching. However, the scheme only performs dynamic virtual simulation on disassembly and assembly operations, and does not describe and design interaction on other aspects of the front pump.
Disclosure of Invention
1. Technical problem to be solved by the invention
To overcome the above technical problems, the present invention provides a method and system, an apparatus, and a storage medium. The principle of the central air-conditioning equipment can be quickly known by students, the maintenance operation of basic common faults can be learned, and the simulation teaching can be efficiently completed by interaction with the system.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a simulation method of a central air conditioner virtual maintenance training system comprises the following steps: designing a virtual maintenance training system of the central air conditioner; virtualizing a physical prototype of the central air conditioning unit into a digital prototype in 3D modeling software; importing a digital prototype and materials into the central air-conditioning virtual maintenance training system, constructing each virtual environment UI interface of the system, endowing the digital prototype with physical performance and dynamic function, and adding a role controller; connecting HTC VIVE VR the device with the UI interface engine; rendering the digital sample machine in the system, and adding a terrain system; designing an interaction mode of a user and the system, and compiling an interaction script; recording the learning condition of a user in the system and the interaction condition with the system; and checking the equipment maintenance according to the interaction condition of the user and the system in the virtual scene.
In a further improvement, the system comprises an equipment introduction module, a fault introduction module, a maintenance demonstration module, a maintenance training module and a scene roaming module.
The system is further improved by adopting VR technology, three-dimensional modeling, model optimization, model and tool scene loading, model animation and human-computer interaction technology.
In a further improvement, the system is designed to be constructed in the order of inside to outside and from small to large.
In a further refinement, the HTC VIVE VR device includes a Vive Head Mounted Display (HMD), a Steam controller, a junction box, and a Lighthouse base station connected in series.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
due to the fact that the hardware devices such as the head-mounted display and the positioner are arranged, the degree of simulating real devices is better than that of a textbook teaching and desktop virtual reality system, a student can know the general situation of a working site in a virtual environment, and safety accidents such as electric shock, falling and mechanical damage of the working site caused by insufficient experience and negligence of safety regulations of the student are greatly reduced. The virtual maintenance system can ensure that students in different batches are trained, the consistency is ensured on the learning quality, and the system is convenient to be used in a training room of a college on a large scale.
Drawings
Fig. 1 is a flowchart of a simulation method of a central air conditioning virtual maintenance training system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a simulation method of a central air conditioning virtual maintenance training system according to a preferred embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
The embodiment provides a simulation method of a central air conditioner virtual maintenance training system, as shown in fig. 1, including: designing a virtual maintenance training system of the central air conditioner; virtualizing a physical prototype of the central air conditioning unit into a digital prototype in 3D modeling software; importing a digital prototype and materials into the central air-conditioning virtual maintenance training system, constructing each virtual environment UI interface of the system, endowing the digital prototype with physical performance and dynamic function, and adding a role controller; connecting HTCVIVE VR the device with the UI interface engine; rendering the digital sample machine in the system, and adding a terrain system; designing an interaction mode of a user and the system, and compiling an interaction script; recording the learning condition of a user in the system and the interaction condition with the system; and checking the equipment maintenance according to the interaction condition of the user and the system in the virtual scene.
The system comprises an equipment introduction module, a fault introduction module, a maintenance demonstration module, a maintenance training module and a scene roaming module. The system is designed by adopting VR technology, three-dimensional modeling, model optimization, model and tool scene loading, model animation and human-computer interaction technology; the system is constructed from inside to outside in a sequence from small to large during design; the HTCVIVE VR equipment includes Vive Head Mounted Display (HMD), Steam controller, terminal box and Lighthouse base station that connect gradually.
Example 2
The embodiment takes a central air-conditioning water-cooling screw type refrigerating unit as a research object, and provides a central air-conditioning virtual maintenance training system based on a head-mounted display. Such systems are based on VR technology. Three-dimensional modeling, model optimization, model and tool scene loading, model animation, human-computer interaction and the like. The system can make up the defects of the traditional training course, and brings a better training teaching effect for students in building environment and energy application engineering major or provides primary training for air conditioner maintenance technicians.
As shown in fig. 2, the simulation method of the virtual maintenance training system of the central air conditioner based on the head-mounted display according to the embodiment includes the following steps:
the method comprises the following steps: designing a function module and a framework of a central air-conditioning virtual maintenance training system based on a head-mounted display.
The virtual maintenance system is mainly used for the maintenance technicians of the family and the primary air conditioners in the building environment and energy application engineering. Therefore, the system is designed with five modules: equipment introduction, fault introduction, maintenance demonstration, maintenance training and scene roaming so as to meet the requirements on training courses. The maintenance training and the scene roaming are core modules of the system.
Step two: and virtualizing the physical prototype of the central air conditioning unit into a digital prototype in 3D modeling software.
Because the system belongs to an industrial teaching simulation system, the fineness of a digital sample model is not as high as that of the mechanical field. For the models required in the virtual scene: the water-cooled screw type refrigerating unit, the cooling tower, the fan coil and the like are simplified on the basis of ensuring the structural characteristics of the water-cooled screw type refrigerating unit, the cooling tower and the fan coil to be displayed. When the model is built, the model is built from inside to outside in a sequence from small to large. And during model construction, the proportional relation and the position relation among the parts are noted.
Step three: according to the system module and the frame which are designed and planned in the first step, the digital prototype and the materials are introduced into the virtual environment, UI interfaces of all the virtual environments of the system are constructed, physical properties and dynamic functions such as a rigid body, a collision body, friction force and the like are given to the digital prototype, and a first person or a third person role controller is added, so that the system is closer to the real world.
(1) The design of the UI interface follows the principle of simplicity and comprehensibility, and a login interface, a main interface, an interface of six modules and a sub-interface of six maintenance scenes of virtual maintenance are designed.
(2) The real physical properties of the digital prototypes need to be assigned by the physical engine in the virtual engine. Rigid body: rigid body components in the virtual engine can endow the digital prototypes with physical properties, so that the digital prototypes and parts thereof are subjected to thrust and torsion under the control of a physical system so as to move like in the real world. Meanwhile, only the rigid body component is added to the digital prototype, and the rigid body component can be influenced by gravity. Collision body: in the virtual engine, the collision bodies have 2 functions, firstly, parts do not penetrate through each other, and the collision bodies are required to be added to the parts of the digital prototype together with the rigid bodies to trigger collision. The second is a trigger function, which sometimes needs to trigger an event through a trigger. When a game object bound with a collision volume enters a trigger area, an OnTriggerEnter function on the trigger object is operated, and an IsTrigger check box needs to be checked in a collision volume component in a viewing panel.
(3) The role controller: in a maintenance training and scene roaming module of the virtual maintenance system, a user is required to perform virtual maintenance training and scene roaming from the perspective of a first person or a third person. The character controller allows easy movement without handling rigid bodies in case of a collision.
Step four: HTC VIVE VR connection of the device to the Unity 3D engine.
(1) Initial setup of the Steam VR. Clear 4m x 3m open area, remove all objects to prevent collision when using the SteamVR. The Vive Head Mounted Display (HMD), the Stemam controller, the junction box, and the Lighthouse base station were connected, powered on, and set up according to the instructions provided by Valve.
(2) Room settings for VR scene ranges. Turn on Steam VR, choose "run room setting" → "set room size". And establishing positioning, positioning a display, positioning a ground and measuring a space in a 4m x 3m space in the first step.
Step five: and performing multi-aspect rendering of texture mapping and light on the digital sample machine in a virtual scene, and increasing a terrain system.
(1) The model constructed in the modeling software does not endow the material chartlet, and in order to make the digital prototype more vivid, the corresponding material chartlet needs to be added to the digital prototype in the virtual engine. Such as metal pipe texture, smooth metal texture.
(2) The light source is an important component of each virtual scene, the shape and texture of the scene are determined by the model and the texture, and the brightness, the color and the atmosphere of the virtual scene are determined by the light source.
(3) In a virtual scene, terrain is an indispensable element, and the whole virtual scene is based on the terrain.
Step six: designing an interaction mode of a user and the virtual system of the central air-conditioning refrigerating unit, and compiling an interaction script to enable the user and the virtual maintenance system to carry out interaction operation.
The system is a virtual maintenance simulation system based on an HTC HMD head-mounted display, and in consideration of the prior art level and the use habits of users, the interactive mode is man-machine interaction through keys of left and right handles.
Step seven: recording the learning condition of a user in the head-mounted water-cooling screw type refrigerating unit virtual maintenance system and the interaction condition with the system. The system designs a maintenance and assessment module, and the service condition of a user is recorded and investigated in the module.
Step eight: and checking the maintainability of the equipment according to the interaction condition of the user and the virtual maintenance system in the virtual scene. After the system is initially finished, all performances of the software need to be tested, and various program bugs are eliminated. And then the system is perfected and repaired according to the use condition of the user on the system.
The embodiment is based on a virtual repair simulation design mode developed by HTC VIVE. The method is characterized in that a virtual maintenance simulation design is carried out based on three-dimensional modeling, model optimization, model and tool scene loading, model animation, man-machine interaction and the like, and a set of head-mounted display water-cooling screw type refrigerating unit virtual maintenance simulation system is developed. The virtual reality technology is enabled to enter college classrooms and college training rooms.
The embodiment is an organic combination of Virtual Reality (VR) technology and the central air-conditioning industry. The embodiment is an attempt of applying a virtual reality technology in the heating ventilation air-conditioning teaching field, overcomes the defects of a traditional practical training course, and promotes the industry development for developing a set of whole heating ventilation air-conditioning virtual maintenance system accumulated experience. Meanwhile, the embodiment also enables the user to learn the relevant knowledge of the central air conditioner personally in the system.
Traditional education is only the amass of giving the student and infuses knowledge, and utilizes virtual reality technique can help the student to make lively, lifelike learning environment now, makes the student strengthen memory through real impression, compares in passive infuse, utilizes virtual reality technique to carry out autonomic study and lets the student accept more easily, and this kind of mode arouses student's interest in learning more easily.
Because the embodiment has hardware equipment such as a head-mounted display and a positioner, the degree of simulating real equipment is better than that of a textbook teaching and desktop virtual reality system, so that a student can know the general situation of a working site in a virtual environment, and the safety accidents of electric shock, falling, mechanical damage and the like of the working site caused by negligence of safety regulations due to insufficient experience of the student are greatly reduced. The virtual maintenance system can ensure that students in different batches participate in training, and the consistency is ensured on the learning quality. The system is convenient to be used in training rooms of colleges and universities in a large range.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (5)
1. A simulation method of a central air conditioner virtual maintenance training system is characterized by comprising the following steps:
designing a virtual maintenance training system of the central air conditioner;
virtualizing a physical prototype of the central air conditioning unit into a digital prototype in 3D modeling software;
importing a digital prototype and materials into the central air-conditioning virtual maintenance training system, constructing each virtual environment UI interface of the system, endowing the digital prototype with physical performance and dynamic function, and adding a role controller;
connecting HTC VIVE VR the device with the UI interface engine;
rendering the digital sample machine in the system, and adding a terrain system;
designing an interaction mode of a user and the system, and compiling an interaction script;
recording the learning condition of a user in the system and the interaction condition with the system;
and checking the equipment maintenance according to the interaction condition of the user and the system in the virtual scene.
2. The method of claim 1, wherein the system comprises an equipment introduction module, a fault introduction module, a maintenance demonstration module, a maintenance training module, and a scenario roaming module.
3. The method of claim 1, wherein the system is designed using VR technology, three-dimensional modeling, model optimization, model and tool scene loading, model animation, and human-computer interaction technology.
4. The method of claim 1, wherein the system is designed to be built in a small to large order from inside out.
5. The method of claim 1, wherein the HTC VIVE VR device comprises a Vive Head Mounted Display (HMD), a Steam controller, a junction box, and a Lighthouse base station connected in series.
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