CN112085983B - Virtual-real combination-based automobile virtual simulation teaching cloud service platform system - Google Patents
Virtual-real combination-based automobile virtual simulation teaching cloud service platform system Download PDFInfo
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- 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
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
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- 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
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- G09B9/00—Simulators for teaching or training purposes
Abstract
The invention provides an automobile virtual simulation teaching cloud service platform system based on virtual-real combination, which comprises: the practical training sub-module for virtual disassembly, assembly and maintenance and the traditional practical training sub-module, wherein the practical training sub-module for virtual disassembly, assembly and maintenance adopts a 3D digital model and a virtual display technology to realize virtual interaction, data are sent and received between the practical training sub-module for virtual disassembly, assembly and maintenance and the traditional practical training sub-module for practical operation through a cloud end, the practical disassembly, assembly and training sub-module comprises a cloud end, an intelligent interaction terminal, a school management end, a teacher end and a student end, and the intelligent interaction terminal, the school management end, the teacher end and the student end send/receive data through the cloud end; the practical training submodule of traditional practice includes: vehicle, whole car trouble collection box and data acquisition terminal. Network practice teaching is realized for the education of the vocational schools and the vocational schools of the automobile vocational schools through the intelligent teaching cloud platform, the class of the entity is spanned, and a solid foundation is laid for the networking, the digitalization and the intellectualization of the class.
Description
Technical Field
The invention belongs to the technical field of automobile intelligent manufacturing, vocational education, application type basic science, automobile after market, automobile maintenance, internet systems and method application, and particularly relates to an automobile virtual simulation teaching cloud service platform system based on virtuality and reality combination.
Background
With the widespread popularization of automobiles in China, the automobile industry and the share of the driven upstream and downstream industries in economic growth are continuously improved. Automobile detection and maintenance professional (hereinafter referred to as 'automobile repair') of colleges and universities also have a relatively explosive calling situation, and the traditional practical teaching mode cannot meet the teaching requirement. The automobile maintenance training is an important training project for automobile detection and maintenance major, and the traditional training teaching mode is not ideal in effect. For the students in the automobile repair profession, the training teaching can consolidate the theoretical knowledge learned, deepen the understanding of the professional knowledge and train practical manual operation skills. And the practical training of automobile maintenance is complicated, and students cannot master the maintenance skills after several simple practical training, and the students can be proficient only by repeated training and skillful assembly and disassembly. Currently, most of the training of the automobile repair major of the higher vocational colleges stay in the traditional teaching mode, and the following problems exist:
theoretical course teaching
1. In the online or offline theoretical course teaching, only the principle type teaching can be taught, and the vehicle information can only be used for sensing the vehicle state in the form of a picture;
2. the assembly and adjustment of the vehicle can not be operated actually and the physical and physical integrated teaching can not be realized;
3. the fault diagnosis thought and flow of the vehicle are difficult to explain and give lessons;
4. the positions of all parts of the vehicle, the arrangement form of a high-voltage system and various energy states cannot be controlled in real time;
5. students cannot really operate the vehicle.
(II) practical exercise teaching mode
1. Each student can not be ensured to operate manually in the practical course explanation;
2. in the reasonable off-peak practical operation of the practical training course, the practical training room is required to be used very frequently and has very strict requirements on the practical training room, and the practical training room cannot be effectively reduced;
3. and reasonable peak-shifting teaching of theoretical courses.
With the development of information technology, how to combine online and offline, a virtual simulation training base for vocational education is built by relying on new information technologies such as virtual reality and artificial intelligence, the application level is continuously improved, the information technology and the training facilities are deeply fused, a virtual simulation training system is built by the idea of combining real, virtual and real, virtual simulation training equipment is configured, and the teaching management and sharing system is used for carrying out overall management and resource allocation and sharing on the virtual simulation training base, so that the real progress is realized, the internet and internet of things teaching mode is increased, and the real physical and real integration and virtual and real integration teaching mode is really realized.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, in a virtual-real combined automobile detection and maintenance training platform, students are grouped and alternately carried out in a training mode, one part of the students enters a virtual training area to carry out virtual disassembly and maintenance training on a computer through an interactive platform, one part of the students enters a real operation training area to use a disassembling and assembling tool to carry out manual practice, the defects that in the traditional training, the students are slow in mastering speed, insufficient in training stations, long in consumed time, poor in effect and the like are overcome, and the disassembly and maintenance training quality and the training effect of a professional engine for automobile maintenance are improved.
The invention aims to provide an automobile virtual simulation teaching cloud service platform system based on virtual-real combination, which comprises:
the practical training sub-module for virtual disassembly and maintenance and the practical training sub-module for traditional practical operation are characterized in that the practical training sub-module for virtual disassembly and maintenance adopts a 3D digital model and a virtual display technology, virtual interaction is realized through a mouse, a keyboard and a touch screen technology in operation, and data are sent and received between the practical training sub-module for virtual disassembly and maintenance and the practical training sub-module for traditional practical operation through a cloud.
Preferably, the virtual disassembly, assembly and training sub-module comprises a cloud end, an intelligent interactive terminal, a school management end, a teacher end and a student end, wherein the intelligent interactive terminal, the school management end, the teacher end and the student end send/receive data through the cloud end; wherein the content of the first and second substances,
the intelligent interactive terminal of the internet of things is used for setting a real type fault of the vehicle through the intelligent interactive terminal of the internet of things and collecting real data of the vehicle after the real type fault occurs;
the school management terminal comprises a school login page, a control console, basic information, a training equipment list, class management, professional management, teacher management, student management and password management function button options, and is used for establishing class, professional and teacher accounts and grafting and examining various examination systems through a school level layer management system cloud platform;
teacher end including teacher log-in page, teacher control desk, personal center, equipment list and on-line answering function button option, teacher end user can make classified management of related functions and data through intelligent class, theory course and examination system, where the intelligent class includes class selection, intelligent equipment selection, fault selection module and fault control interface option card, the theory course includes class selection, equipment selection and scene viewing and teaching video viewing option card, the examination system includes theory examination, practical examination and comprehensive examination types, in order to deal with the situation that the offline course giving can not be performed under the emergency situation, the teacher end is added with on-line answering function for fault setting, wire harness voltage signal acquisition instrument, information reading, ignition switch control, decoder information reading, vehicle 360-degree no-dead-angle viewing vehicle state, The system has an examination system and examination question uploading function, a teacher end can be connected with a resource port, and resources comprise video and text data provided by a teacher, so that the steam repair knowledge is taught by combining the experience of the teacher;
the student end: start the teacher at car virtual simulation teaching cloud service platform system and give lessons, be started during training or examination, correspond with the teacher's end, the student end includes student end login page, the student control cabinet, individual center, wisdom classroom, theoretical course and online questioning function option button, wherein theoretical course can the autonomous selection equipment, and carry out the interior scene of whole car and look over, and watch the teaching video of assisting online and offline real-time teaching as supplementary, the teaching video is recorded in advance and is placed on cloud platform system, can set up according to the grade and the level at real standard content and student place and watch the authority, the learning function that the student control cabinet was accomplished includes: the teacher end is used for removing faults set by the teacher end, the faults include checking of collection of wire harness voltage signals, reading of instrument information and/or reading of decoder information, in an actual classroom, a teacher guides students to complete collection of various data signals, classification of fault reasons and explanation of fault removal methods are conducted according to collected signals, after fault removal, the students can complete collection of key data signals and sensor signals again through the intelligent interaction terminal, comparison and verification of results are conducted, and therefore learning of theoretical knowledge is deepened. The on-line question asking and answering are usually completed in real time, and the reminding of information sending and receiving is set at the teacher end and the student end respectively, so that the information exchange efficiency is improved.
Preferably, the virtual-real combination-based automobile virtual simulation teaching cloud service platform system can perform geometric virtual reality interaction based on three-dimensional modeling, and can be realized by adopting 3D data supporting various formats, a CAD system and software supporting file formats.
Preferably, the file formats include Solidworks, CATIA V4 and V5, Pro/ENGINEER, STEP and IGES, etc., and can be integrated with any PLM system through simple XML exchange, so that when new vehicle models or parts need to be added to the training system, design changes are directly updated into the product documentation in a seamless manner, creating a more accurate structure.
Preferably, the virtual-real combination-based automobile virtual simulation teaching cloud service platform system is synchronized with a 3D digital model with a designed number through a 3DVia Snync, so that the correlation of full 3D design is realized; and interactive operations such as assembly and disassembly, section cutting, zooming, perspective and the like of the virtualized parts are realized through touch operation of the terminal, prompting of the preset steps is carried out through the preset operation steps and prompting means such as flashing and the like, and logic judgment after the interactive operations is realized through later-stage system integration development, namely whether the assembly and disassembly sequence is reasonable or not and whether the replacement of the parts is unknown or not is correct or not.
Preferably, the teaching implementation process corresponding to the virtual simulation teaching cloud service platform system based on the virtual-real combination comprises the following steps: real teaching of instructing in online course self-study, traditional classroom and interactive platform, wherein:
self-learning of online courses: the cloud service platform system provides a practical training task book and informs students of on-line learning of corresponding contents before class. In the process of self-learning content, students can develop discussions with teachers and classmates through the platform under the online questioning module, and can also perform online tests, and learning with learning labels can be completed in continuous feedback and discussion;
classroom training teaching: the virtual-real combined project task training is developed in an integrated training classroom and is divided into two stages, wherein the first stage is forward test, students are guided to perform learning result display by combining the test condition of the students on a network platform, and then a teacher guides the students to supplement and perfect, the second stage defines the training task of the class section, the students can communicate with each other in the training process through individual or group cooperation, and can also check related resources such as maintenance manuals, operation videos and the like on a cloud service platform system, and the teacher provides corresponding guidance according to the field training condition;
and (4) interactive communication feedback, namely, expanding classroom interaction by using the discussion, questionnaire and answer function of the network platform, enabling students to finish recorded practical training work orders through the operation on the platform, photographing and uploading the practical training work orders to the platform, and discussing and evaluating the practical training work orders. Then, setting an expansion project on the platform for students who learn the rest through online testing, checking and consolidating the learning effect;
preferably, the intelligent classroom of the teacher end and the intelligent classroom of the student end not only records and broadcasts videos, but also performs interactive animation display, animation output in various formats is manufactured by using key frames, in the animation manufacturing process, the camera is adopted to obtain the view and angle parameters of details in the vehicle, model roles related to faults are reasonably arranged, the motion relation among the roles is set, reasonable animation practices and key frames are set according to needs, and finally animation files meeting requirements are exported; and the wisdom classroom adopts dynamic image, video for the student show car inner structure and theory of operation.
Preferably, the system also comprises a management background, so that all management work required in the use process of the system platform is completed in an integrated mode, wherein the management background comprises login management, a control console, equipment management, fault board management, camera management, school management, question bank management, video management and work order management function option buttons; wherein the equipment management comprises functions of adding equipment, equipment name, model, fault board management and equipment self-checking, the device can be subjected to condition query, the query result can be derived, the device name is divided into fault detection systems with different models, wherein the equipment number can distinguish the equipment, thereby facilitating the management of fixed assets, carrying out private management on the equipment through the Secret ID and the Secret key, carrying out reasonable cross matching use on the equipment of different schools, uploading the documents of specifications, operation manuals and fault setting lists while purchasing the equipment, meanwhile, the state of the equipment is read through an interface, a fault board is manually added and checked, the equipment can be modified and deleted under certain authority, the real-time updating of the state of the equipment assets is ensured, and the updating is synchronous with the updating of the state information of a teacher end and a student end in real time;
the information displayed under the fault board management interface comprises a fault board name, a module to which the fault board belongs, equipment to which the fault board belongs, a fault point, and a display or hide equipment connection state, a firing switch state is on or off, a default gear, a default brake switch and a checking function of a fault board picture, and in the teaching process, the name of the fault point, the name of the fault board to which the fault board belongs, the default state, decoder information, simple description of a fault code, and upper point voltage value and lower point voltage value display are determined according to a fault point number, and the state information corresponds to data obtained when a student end is actually operated, so that the student end can conveniently obtain the corresponding relation between the voltage value and fault detailed information;
the camera management comprises camera addition and model management, privacy management is carried out through secret ID and secret key, and the permission setting of opening and closing the camera and the random adjustment of the shooting angle of the camera are carried out according to control requirements.
Preferably, the traditional practical training sub-module includes:
the vehicle is a common passenger vehicle on the market, and is additionally provided with an external wiring harness to be connected with a complete vehicle fault acquisition box and a video acquisition terminal;
the whole vehicle fault acquisition box is used for acquiring fault data of a whole vehicle, installing an intelligent interactive terminal in the vehicle and the teaching equipment, and sending the vehicle data to the cloud server through a 4G card or a wireless network;
a data acquisition terminal: the system comprises a plurality of cameras, wherein the cameras are installed at a plurality of positions of the whole vehicle, and the conditions in the whole vehicle are sent to a data storage system of a cloud service platform for data storage through the cameras.
Preferably, the thing networking intelligent interaction terminal adopts ARM 32-bit Cortex into M4 CPU, has integrateed the WIFI communication, the bluetooth communication, and the intelligent interaction terminal is installed to the hardware interface of 4G communication in vehicle and teaching equipment, through 4G card or wireless network vehicle data transmission to cloud ware, realizes remote network teaching, the camera is 5, installs respectively in cabin, instrument, well accuse platform, vehicle rear portion, charge mouthful or near the oil filler hole.
The invention has the beneficial effects that:
education and energization of various vocational schools are realized through the intelligent teaching cloud platform, network practice teaching is realized for various automobile vocational education type vocational schools, the class of an entity is spanned, and a solid foundation is laid for networking, digitalizing and intelligentizing of a classroom. The personalized customized learning scheme is provided for students, and the beneficial effects specifically comprise:
1. the automobile virtual simulation teaching cloud service platform aims to provide efficient and convenient intelligent network teaching dual-support service for national automobile vocational schools and application-type departments. Provides 7 x 24 hours of study guidance, and can provide a unified external service window of all-round support service for students, teachers and training schools.
2. The cloud service platform is based on a digitalized, networked and virtualized intelligent teaching cloud, and has the functions of massive information service, cloud storage, cloud computing, cloud teaching, cloud display and cloud interaction. The cloud service platform provides a one-stop brand-new teaching service for the user and meets the demand of point-to-point teaching consultation service. The requirements of teachers and students in the universities can be taken as the starting point of actual work, and corresponding network course contents are designed according to the thinking and the method of network course teaching design and the data and courseware planning; and proper teachers' resource force and professional design teams can be searched according to the development requirements of clients, and the production and development of various teaching outputs and courseware are completed.
3. The online and offline teaching mode is combined, the online and offline teaching mode is really advanced, the internet and internet of things teaching mode is added, and the physical and physical integrated and virtual and physical integrated teaching mode is really realized. The virtual disassembly and assembly training platform and the transmission actual operation disassembly and assembly training are integrated, the length of the virtual disassembly and assembly training platform and the length of the virtual disassembly and assembly training platform are considered, the length of the virtual disassembly and assembly training platform is shortened, and therefore students can master advanced maintenance technology in the virtual realization platform, and practical operation maintenance training is used for improving the practical ability. The virtual-real combined practical training platform is established in the practical training of engine maintenance, students are grouped during practical training, one part of students enter the virtual practical training area to carry out virtual disassembly and assembly maintenance practical training on a computer through the interactive platform, the other part of students enter the practical training area to carry out manual practice through a disassembly and assembly tool, and the integrated platform improves the utilization rate and practical training effect of the original traditional practical training platform.
4. According to the characteristics of professional crossing and social training, the professionality and compatibility of training course design are considered, and a training teaching course system adaptive to virtual simulation is built, so that an ideal automobile virtual-real combined online simulation teaching training system based on a cloud service platform is obtained.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a system architecture diagram of an automobile virtual simulation teaching cloud service platform based on virtual-real combination according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a virtual disassembly and assembly and training sub-module interface according to an embodiment of the invention;
fig. 3 is a schematic diagram of an intelligent classroom interface of a battery management system BMS fault detection system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a management interface for managing background devices according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a management interface for managing a background fault board according to an embodiment of the invention;
FIGS. 6 (a) and (b) are schematic diagrams showing selection interfaces of a training device and a fault module at a teacher end, respectively;
fig. 7 (a) and (b) are schematic diagrams of interfaces of student-side intelligent teaching device selection, live-action viewing and video viewing, respectively.
Detailed Description
Referring to fig. 1, the virtual-real combination-based automobile virtual simulation teaching cloud service platform system of the embodiment includes:
the practical training sub-module for virtual disassembly and maintenance and the traditional practical training sub-module for practical operation are characterized in that the practical training sub-module for virtual disassembly and maintenance adopts a 3D digital model and a virtual display technology, virtual interaction is realized through a mouse, a keyboard and a touch screen technology in operation, and data are sent and received between the practical training sub-module for virtual disassembly and maintenance and the traditional practical training sub-module for practical operation through a cloud.
As shown in fig. 2, the virtual disassembly, assembly and training sub-module includes a cloud, an intelligent interactive terminal, a school management terminal, a teacher terminal and a student terminal, wherein the intelligent interactive terminal, the school management terminal, the teacher terminal and the student terminal send/receive data through the cloud; wherein the content of the first and second substances,
the intelligent interactive terminal of the internet of things is used for setting the real type of fault of the vehicle and collecting real data after the real type of fault of the vehicle occurs through the intelligent interactive terminal of the internet of things;
the school management terminal comprises a school login page, a control console, basic information, a training equipment list, class management, professional management, teacher management, student management and password management function button options, and is used for establishing classes, professions and teacher accounts (new energy, automobile repair, power supply and the like) and grafting and examining various examination systems through a school level layer management system cloud platform;
the teacher end comprises a teacher login page, a teacher control console, a personal center, an equipment list and an online answering function button option, and a teacher end user can classify and manage related functions and data through a smart classroom, a theoretical course and an examination system, wherein the smart classroom comprises a class selection class, a smart equipment selection, a fault selection module and a fault control interface option card, the theoretical course comprises a class selection class, a device selection class, a live view and teaching video viewing option card, the examination system comprises theoretical examination, real operation examination and comprehensive examination types, in addition, in the embodiment, in order to solve the problem that offline course teaching cannot be performed under emergency conditions, an online answering function is added to the teacher end for performing fault setting, wiring harness voltage signal acquisition, instrument information reading, ignition switch control, decoder information reading, vehicle 360-degree dead angle-free viewing vehicle state, Possess examination system and examination question and upload, in this embodiment, the trouble sets up through APP (panel computer or other mobile devices) through thing networking remote setup, and the trouble relates to the trouble of vehicle and teaching equipment to real vehicle fault state that restores. The teacher end can be connected with a resource port, and resources comprise video and text data provided by the teacher, so that the teacher's experience is combined to teach the automobile repair knowledge.
The student end: start the teacher at car virtual simulation teaching cloud service platform system and give lessons, be started during training or examination, correspond with the teacher's end, the student end includes student end login page, the student control cabinet (including wisdom classroom, the paper for examination, score and study record), individual center, the wisdom classroom, theoretical course and online questioning function option button, wherein theoretical course can independently select equipment, and look over in the whole car interior scene, and watch the teaching video of real-time teaching on-line and off-line as supplementary, the teaching video is recorded in advance and is placed on cloud platform system, can set up according to the grade and the level at real content of instructing and student place and watch the authority, the study function that the student control cabinet mainly accomplished includes: the method is used for removing faults set by a teacher end, and comprises the steps of checking the collection of the voltage signals of the wire harnesses, reading the information of the instrument and/or reading the information of the decoder, in an actual classroom, the teacher guides students to complete the collection of various data signals, and classifies fault reasons and explains the fault removal method according to the collected signals, after the fault removal, the students can complete the collection of key data signals and sensor signals again through the intelligent interaction terminal, and the comparison and verification of results are carried out, so that the learning of theoretical knowledge is deepened. The on-line question asking and answering are usually completed in real time, and the reminding of information sending and receiving is set at the teacher end and the student end respectively, so that the information exchange efficiency is improved. Wherein the wisdom classroom in this embodiment explains with battery management system BMS fault detection system as an example, as shown in fig. 3, has the fault setting, looks over in the live-action and decoder information reading function, measures the voltage information, the current information of direct current charging plug through the software equipment universal meter, and wherein the port is connected in the positive negative pole of the quick mouth that fills of direct current respectively and can also gather information such as temperature, and the information of gathering includes before the fault setting and after the fault setting, shows at the terminal adoption visual panel's mode. Meanwhile, geometric virtual reality interaction can be carried out based on three-dimensional modeling. The method can be realized by adopting software supporting 3D data in various formats, CAD systems and file formats, wherein the file formats comprise Solidworks, CATIA V4 and V5, Pro/ENGINEER, STEP, IGES and the like, and can be integrated with any PLM system through simple XML exchange, so that when a new automobile type or parts need to be added into a practical training system, design changes can be directly updated into a product document in a seamless mode, and a more accurate structure assembled by the parts, such as an automobile engine, a transmission, an automobile chassis and the like, can be created. Thus, the correlation of a full 3D design can be achieved by synchronizing the 3D digital model of the designed number with the 3D via Snync. And interactive operations such as dismounting, section cutting, zooming and perspective of the virtualized parts can be realized through touch operation of the terminal, prompting of the preset steps is carried out through the preset operation steps and prompting means such as flashing, and logic judgment after the interactive operation is realized through later-stage system integration development, namely whether the dismounting sequence is reasonable or not and whether the replacement of the parts is unknown or not is correct or not. The internal illustration technology can adopt short video or SMG format files, and efficiently compress the size of the document, and the maximum compression ratio can reach 100: and 1, the management and transmission of files are facilitated. The student end can enter a pre-learning stage before class, such as watching a network cloud classroom, collecting teaching materials and resources, and drawing a thinking guide graph of knowledge. In addition, a network classroom environment developed by the student end is formed, a plurality of learning paths are formed, a plurality of angles are related in an open loop mode, and on the basis of completing basic learning, members are set based on task-oriented work tasks, so that autonomous learning is promoted.
The teaching implementation process comprises the following steps: the online course self-learning and traditional classroom training teaching and interaction platform.
Self-learning of online courses: the cloud service platform system provides a practical training task book and informs students of on-line learning of corresponding contents before class. The students can develop discussion with teachers and classmates through the platform under the online questioning module in the process of self-learning content, and can also perform online testing at the same time, and learning with learning labels can be completed in continuous feedback and discussion.
Classroom training teaching: the virtual-real combined project task training is carried out in an integrated training classroom and is divided into two stages, wherein the first stage is forward testing, students are guided to carry out learning result display by combining the testing condition of the students on a network platform, and then a teacher guides the students to supplement and perfect, the second stage defines the training task of the class section, and the students can communicate with each other and can simultaneously check maintenance manuals, operation videos and other related resources on a cloud service platform system in the training process through individual or group cooperation (in the embodiment, the construction comprises PPT courseware, videos, animations, automobile maintenance manuals, 5 types of resources of exercises, nearly 200 learning resources, and teaching videos correspondingly developed by each typical work task). And the teacher provides corresponding guidance according to the field practical training condition.
And (4) interactive communication feedback, namely, using the discussion, questionnaire and answer function of the network platform to develop classroom interaction (communication interaction comprises the functions of answering, job submission, notification, online test, discussion, data downloading and the like), and through the job on the platform, students complete recorded practical training work orders, take pictures and upload the practical training work orders to the platform for discussion and evaluation. And then, online testing, checking and consolidating the learning effect, and simultaneously setting an expansion project for students who learn the rest on the platform.
For the intelligent classroom part, except recorded and broadcasted videos, interactive animation display can be performed, students are allowed to amplify local areas of key models in the videos, dissect roles, check internal structures and check other models hidden behind the roles, the external structures of the 3D models are peeled off layer by layer to display the internal structures, the number of layers of the peeled layers can be adjusted, internal perspective of entities is achieved through a ray mode, perspective depth is adjusted through a sliding block, a sectioning plane can be defined in a sectioning plane mode, the three-dimensional models are dynamically sectioned to display the internal structures of the three-dimensional models, local details of a certain part can be displayed in a zooming mode according to needs, and the local details cannot be observed in traditional practical training projects. And making animation output in various formats by using the key frames. In the animation production process, the camera installed in the whole vehicle in the embodiment can be utilized to obtain parameters such as the view, the angle and the like of details in the vehicle, model roles related to faults are reasonably distributed, the motion relation among the roles is set, reasonable animation practices and key frames are set according to needs, and finally, animation files meeting requirements are exported.
The intelligent classroom adopts dynamic images and videos to show the internal structure and the working principle of the automobile for students, also can show the complex working process and the principle of the automobile for dynamic simulation performance and drawing of the students, realizes visualized and visualized teaching requirements, and can help the students to better understand related course knowledge, such as explaining the synchronization principle of a relevant synchronizer;
taking an electric control hydraulic automatic transmission of a certain whole vehicle as an example, a 3D model accurately shows the structure and the overall position relation of each part, and the working principle of the transmission is demonstrated in detail, wherein the working principle comprises the working animation demonstration of each part of parking locking, gearbox ventilation, brake braking, a clutch, a planetary gear set, a torque converter, torque measurement and the like, the disassembly and assembly animation simulating the actual working environment is embedded, and corresponding interactive practice training and practical training and examination links are equipped, so that students can firmly master the knowledge of the structure, disassembly, assembly and maintenance of the transmission.
In the embodiment, a management background is further designed, so that all management work required in the use process of the system platform is completed in an integrated mode. The system comprises function option buttons of login management, a control console, equipment management, fault board management, camera management, school management, question bank management, video management and work order management.
Equipment management
As shown in fig. 4, the device management includes adding a device, a device name, a model, a fault board management, and a device self-test function, and for a device, a condition (condition includes a name, a status, and a belonging unit) query may be performed, and a query result may be derived. In this embodiment, the device names are different types of fault detection systems, and the device numbers can distinguish the devices, thereby facilitating management of fixed assets. The equipment can also be privately managed through Secret ID and Secret key, equipment in different schools can be reasonably used in a cross matching mode, documents of specifications, operation manuals and fault setting lists are uploaded while the equipment is purchased, the equipment state is read through an interface, fault boards are manually added and checked, the equipment can be modified and deleted under certain authority, the real-time updating of the equipment asset state is guaranteed, and the updating of the equipment asset state are synchronous in real time.
Second, management of fault board
As shown in fig. 5, the information displayed on the fault board management interface includes the fault board name, the module, the device, the fault point, and the device connection status as displayed or hidden, the on/off status as on/off, the default gear, the default brake switch, and the checking function of the fault board picture. In the teaching process, the name of a fault point, the name of a fault board to which the fault point belongs, default states, decoder information, simple description of a fault code, an upper point voltage value and a lower point voltage value are determined according to the fault point number, and the state information corresponds to data obtained when a student terminal operates in practice, so that the student terminal can conveniently obtain the corresponding relation between the voltage values and fault detailed information.
Third, camera management
The method comprises the steps of adding a camera and managing models, wherein the camera belongs to important fixed assets, and therefore privacy management can be carried out through similar secret ID and secret key, the management mode is similar to that of equipment, and only the camera is a sensor means for important acquisition of image information, so that permission setting for opening and closing the camera according to control needs and arbitrary adjustment of the shooting angle of the camera need to be added.
And fourthly, other management, including school management, question bank management, video management, work order management, opinion feedback and management in the aspects of on-line questioning and answering, and resources are integrated so as to be convenient for unified planning.
The practical training submodule of traditional practice control includes:
the vehicle is a common passenger vehicle on the market, and is additionally provided with an external wiring harness to be connected with a complete vehicle fault acquisition box and a video acquisition terminal;
the whole vehicle fault acquisition box is used for acquiring fault data of a whole vehicle, installing an intelligent interactive terminal in the vehicle and the teaching equipment, and sending the vehicle data to the cloud server through a 4G card or a wireless network;
a data acquisition terminal: the system comprises a plurality of cameras, a plurality of sensors and a cloud service platform, wherein the cameras are arranged at a plurality of parts of the whole vehicle, and the cameras are used for sending the conditions in the whole vehicle to the data storage system of the cloud service platform for data storage;
the virtual disassembly and assembly and maintenance training submodule adopts various modern advanced technologies, so that the learning efficiency of students is greatly improved. According to the above description of the embodiments, there are two main implementation methods for the current virtual disassembly and maintenance training submodule: one is virtual panoramic exhibition based on images, and the other is geometric virtual reality based on three-dimensional stereo modeling.
The typical operation interface of the teacher end comprises:
as shown in fig. 6 (a) and (b), the selection interfaces of the practical training device and the fault module are respectively selected, where the practical training device includes fault detection systems with different device numbers, the fault board types corresponding to the fault module include a charging system OBC, a battery management system BMS, a motor controller PEU, a vehicle control unit VCU, a total number of faults, and a fault clearing, and the addition or deletion of the corresponding module or system of the fault can be performed as needed.
The typical operation interface of the student end comprises:
as shown in fig. 7 (a) and (b), the selection, live view viewing and video viewing are respectively performed on the intelligent teaching device, wherein the intelligent teaching device includes three states of in-use, standby and off, which is convenient for the teacher to select a proper intelligent teaching device according to the states; the live-action viewing is completed by a camera which is arranged in the vehicle, at the positions of a dashboard, the tail of the vehicle, a front cabin of an engine and the like, and information collected by the camera is transmitted to the cloud platform through a router containing a 4G card and the like through 4G, Wifi.
In this embodiment: internet of things intelligent interactive terminal adopts ARM 32-bit Cortex into M4 CPU, WIFI communication is integrated, Bluetooth communication, hardware interfaces such as 4G communication, install intelligent interactive terminal in vehicle and teaching equipment, send vehicle data to cloud server through 4G card or wireless network, remote network teaching can be realized, install 5 cameras and see cabin, instrument, well accuse platform, vehicle rear portion, charge mouth (oil filler) etc. respectively, accessible intelligent practical training system remotely looks over vehicle and teaching during the net class, accessible Internet of things sets up the real open circuit trouble of vehicle, gather the real data of vehicle, accessible APP sets up the trouble of vehicle and teaching equipment through the Internet of things is long-range, real reduction vehicle fault state, possess fault setting, pencil voltage signal acquisition, instrument information reads, ignition on-off control, decoder information reads, The vehicle can check the vehicle state in 360 degrees without dead angles, and the vehicle state checking system and the test questions can be uploaded. The teaching device really realizes the physical and physical integration and the virtual and physical integration, reduces the construction area of a practical training room and really realizes effective isolation. The practical training classroom only places equipment and vehicles, reduces the contact time of students and achieves effective isolation. During the course of a teacher, set faults are eliminated, and the wiring harness voltage signal acquisition, the instrument information reading, the decoder information reading and the like can be checked. Meanwhile, closed teaching can be adopted in a special period, and students in an isolation period can completely carry out teaching courses in a dormitory.
The embodiment enables education of various vocational schools through the intelligent teaching cloud platform, realizes network practice teaching for various automobile vocational education classes, and spans an entity class, so that a firm foundation is laid for classroom networking, digitalization and intellectualization. The method provides a personalized customized learning scheme for students, and specifically comprises the following steps:
1. the automobile virtual simulation teaching cloud service platform aims to provide efficient and convenient intelligent network teaching dual-support service for national automobile vocational colleges. Provides 7 x 24 hours of study guidance, and can provide a unified external service window of all-round support service for students, teachers and training schools.
2. The cloud service platform is based on a digitalized, networked and virtualized intelligent teaching cloud, and has the functions of massive information service, cloud storage, cloud computing, cloud teaching, cloud display and cloud interaction. The cloud service platform provides a one-stop brand-new teaching service for the user and meets the demand of point-to-point teaching consultation service. The requirements of teachers and students in the universities can be taken as the starting point of actual work, and corresponding network course contents are designed according to the thinking and the method of network course teaching design and the data and courseware planning; and proper teachers' resource force and professional design teams can be searched according to the development requirements of clients, and the production and development of various teaching outputs and courseware are completed.
3. The online and offline teaching mode is combined, the online and offline teaching mode is really advanced, the internet and internet of things teaching mode is added, and the physical and physical integrated and virtual and physical integrated teaching mode is really realized. The virtual disassembly and assembly training platform and the transmission actual operation disassembly and assembly training are integrated, the length of the virtual disassembly and assembly training platform and the length of the virtual disassembly and assembly training platform are considered, the length of the virtual disassembly and assembly training platform is shortened, and therefore students can master advanced maintenance technology in the virtual realization platform, and practical operation maintenance training is used for improving the practical ability. The virtual-real combined practical training platform is established in the practical training of engine maintenance, students are grouped during practical training, one part of students enter the virtual practical training area to carry out virtual disassembly and assembly maintenance practical training on a computer through the interactive platform, the other part of students enter the practical training area to carry out manual practice through a disassembly and assembly tool, and the integrated platform improves the utilization rate and practical training effect of the original traditional practical training platform.
4. According to the characteristics of professional crossing and social training, the professionality and compatibility of training course design are considered, and a training teaching course system adaptive to virtual simulation is built, so that an ideal automobile virtual-real combined online simulation teaching training system based on a cloud service platform is obtained.
While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It will be understood by those skilled in the art that variations and modifications of the embodiments of the present invention can be made without departing from the scope and spirit of the invention.
Claims (9)
1. The utility model provides a virtual simulation teaching cloud service platform system of car based on virtuality and reality combines which characterized in that includes:
the practical training sub-module for virtual disassembly, assembly and maintenance and the practical training sub-module for traditional practical operation, wherein the practical training sub-module for virtual disassembly, assembly and maintenance adopts a 3D digital model and a virtual display technology, virtual interaction is realized through a mouse, a keyboard and a touch screen technology in operation, and data are sent and received between the practical training sub-module for virtual disassembly, assembly and maintenance and the practical training sub-module for traditional practical operation through a cloud end;
the virtual disassembly, assembly and training sub-module comprises a cloud end, an intelligent interaction terminal, a school management end, a teacher end and a student end, wherein the intelligent interaction terminal, the school management end, the teacher end and the student end send/receive data through the cloud end; wherein the content of the first and second substances,
the intelligent interactive terminal of the internet of things is used for setting a real type fault of the vehicle through the intelligent interactive terminal of the internet of things and collecting real data of the vehicle after the real type fault occurs;
the school management terminal comprises a school login page, a control console, basic information, a training equipment list, class management, professional management, teacher management, student management and password management function button options, and is used for establishing class, professional and teacher accounts and grafting and examining various examination systems through a school level layer management system cloud platform;
teacher end including teacher log-in page, teacher control desk, personal center, equipment list and on-line answering function button option, teacher end user can make classified management of related functions and data through intelligent class, theory course and examination system, where the intelligent class includes class selection, intelligent equipment selection, fault selection module and fault control interface option card, the theory course includes class selection, equipment selection and scene viewing and teaching video viewing option card, the examination system includes theory examination, practical examination and comprehensive examination types, in order to deal with the situation that the offline course giving can not be performed under the emergency situation, the teacher end is added with on-line answering function for fault setting, wire harness voltage signal acquisition instrument, information reading, ignition switch control, decoder information reading, vehicle 360-degree no-dead-angle viewing vehicle state, The system has an examination system and examination question uploading function, a teacher end can be connected with a resource port, and resources comprise video and text data provided by a teacher, so that the steam repair knowledge is taught by combining the experience of the teacher;
the student end: start the teacher at car virtual simulation teaching cloud service platform system and give lessons, be started during training or examination, correspond with the teacher's end, the student end includes student end login page, the student control cabinet, individual center, wisdom classroom, theoretical course and online questioning function option button, wherein theoretical course can the autonomous selection equipment, and carry out the interior scene of whole car and look over, and watch the teaching video of assisting online and offline real-time teaching as supplementary, the teaching video is recorded in advance and is placed on cloud platform system, can set up according to the grade and the level at real standard content and student place and watch the authority, the learning function that the student control cabinet was accomplished includes: the method is used for removing faults set by the teacher end, and comprises the steps of checking the collection of voltage signals of the wire harness, reading instrument information and/or reading decoder information, in an actual classroom, the teacher guides students to complete the collection of various data signals, classifying fault reasons and explaining a fault removal method according to collected signals, after the fault is removed, the students can complete the collection of key data signals and sensor signals again through the intelligent interaction terminal, and comparison and verification of results are carried out, so that the study on theoretical knowledge is deepened, question asking and answer are carried out on line, the reminding of information sending and receiving is set at the teacher end and the reminding of information receiving are set at the student end respectively, and the information exchange efficiency is improved.
2. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein: the virtual-real combination-based automobile virtual simulation teaching cloud service platform system can perform geometric virtual reality interaction based on three-dimensional modeling and can be realized by adopting 3D data supporting various formats, a CAD system and software of file formats.
3. The virtual-real combination-based automobile virtual simulation teaching cloud service platform system according to claim 2, wherein: the file formats include Solidworks, CATIA V4 and V5, Pro/engine, STEP and IGES, and can be integrated with any PLM system through simple XML exchange, so that when a new vehicle model or part needs to be added to the training system, the design changes are directly updated to the product documentation in a seamless manner, thereby creating a more accurate structure.
4. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein: the virtual-real combination-based automobile virtual simulation teaching cloud service platform system is synchronized with a designed 3D digital model through a 3DVia Snync, so that the correlation of full 3D design is realized; and interactive operations of assembly, disassembly, section, zooming and perspective of the virtualized parts are realized through touch operation of the terminal, the prompting of the preset steps is carried out through the preset operation steps and a flashing prompting means, and logic judgment after the interactive operation is realized through later-stage system integration development, wherein the logic judgment comprises whether the assembly and disassembly sequence is reasonable and whether the replacement position of the parts is correct.
5. The virtual-real combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein the corresponding teaching implementation process of the virtual-real combination-based automobile virtual simulation teaching cloud service platform system comprises: real teaching of instructing in online course self-study, traditional classroom and interactive platform, wherein:
self-learning of online courses: the cloud service platform system provides a practical training task book and informs students of learning corresponding contents online before class, and the students can perform discussion with teachers and classmates through the platform under an online questioning module in the process of self-learning contents, and can also perform online test at the same time, and complete learning before class in continuous feedback and discussion;
classroom training teaching: the virtual-real combined project task training is developed in an integrated training classroom and is divided into two stages, wherein the first stage is forward test, students are guided to perform learning result display by combining the test condition of the students on a network platform, and then a teacher guides the students to supplement and perfect, the second stage defines the training task of the class section, the students communicate with each other or simultaneously check maintenance manuals and operation video related resources on a cloud service platform system in the training process completed by individual or group cooperation, and the teacher provides corresponding guidance according to the field training condition;
the interactive communication feedback utilizes discussion, questionnaire and the function of racing to answer a question of the network platform, develops classroom interaction, and through the operation on the platform, lets the student accomplish the real standard work order after the record, shoots and uploads to the platform, discusses and appraises, later, through on-line test, inspection and consolidate the study effect, sets up the extension project on the platform for the student who learns the residual simultaneously.
6. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein: the intelligent classroom of the teacher end and the student end not only records and broadcasts videos, but also carries out interactive animation display, animation output in various formats is produced by utilizing key frames, in the animation production process, a camera is adopted to obtain the view and angle parameters of details in the vehicle, model roles related to faults are reasonably distributed, the motion relation among the roles is set, reasonable animation practice and key frames are set according to needs, and finally animation files meeting requirements are obtained; and the wisdom classroom adopts dynamic image, video for the student show car inner structure and theory of operation.
7. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein: the system comprises a system platform, a management background and a work order management function button, wherein the system platform comprises a plurality of management platforms, and the management platform comprises a plurality of management function buttons, a plurality of management function buttons and a plurality of management function buttons, wherein the management function buttons comprise login management, a control console, equipment management, fault board management, camera management, school management, question bank management, video management and work order management; wherein the equipment management comprises functions of adding equipment, equipment name, model, fault board management and equipment self-checking, the device can be subjected to condition query, the query result can be derived, the device name is divided into fault detection systems with different models, wherein the equipment number can distinguish the equipment, thereby facilitating the management of fixed assets, carrying out private management on the equipment through the Secret ID and the Secret key, carrying out reasonable cross matching use on the equipment of different schools, uploading the documents of specifications, operation manuals and fault setting lists while purchasing the equipment, meanwhile, the state of the equipment is read through an interface, a fault board is manually added and checked, the equipment can be modified and deleted under certain authority, the real-time updating of the state of the equipment assets is ensured, and the updating is synchronous with the updating of the state information of a teacher end and a student end in real time;
the information displayed under the fault board management interface comprises a fault board name, a module to which the fault board belongs, equipment to which the fault board belongs, a fault point, and a display or hide equipment connection state, a firing switch state is on or off, a default gear, a default brake switch and a checking function of a fault board picture, and in the teaching process, the name of the fault point, the name of the fault board to which the fault board belongs, the default state, decoder information, simple description of a fault code, and upper point voltage value and lower point voltage value display are determined according to a fault point number, and the state information corresponds to data obtained when a student end is actually operated, so that the student end can conveniently obtain the corresponding relation between the voltage value and fault detailed information;
the camera management comprises camera addition and model management, privacy management is carried out through secret ID and secret key, and the permission setting of opening and closing the camera and the random adjustment of the shooting angle of the camera are carried out according to control requirements.
8. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 1, wherein: the practical training submodule for traditional practical operation comprises:
the vehicle is a common passenger vehicle on the market, and is additionally provided with an external wiring harness to be connected with a complete vehicle fault acquisition box and a video acquisition terminal;
the whole vehicle fault acquisition box is used for acquiring fault data of a whole vehicle, installing an intelligent interactive terminal in the vehicle and the teaching equipment, and sending the vehicle data to the cloud server through a 4G card or a wireless network;
a data acquisition terminal: the system comprises a plurality of cameras, wherein the cameras are installed at a plurality of positions of the whole vehicle, and the conditions in the whole vehicle are sent to a data storage system of a cloud service platform for data storage through the cameras.
9. The virtual reality combination-based automobile virtual simulation teaching cloud service platform system according to claim 8, wherein: thing networking intelligent interaction terminal adopts ARM 32-bit Cortex into M4 CPU, has integrateed the WIFI communication, the bluetooth communication, and the hardware interface of 4G communication installs intelligent interaction terminal in vehicle and teaching equipment, through 4G card or wireless network vehicle data transmission to cloud ware, realizes remote network teaching, the camera is 5 and above, installs respectively in cabin, instrument, well accuse platform, vehicle rear portion, charge mouthful or near the oil filler hole.
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