CN210466758U - Experiment examination system based on virtual reality - Google Patents

Abstract

The utility model provides an experimental examination system based on virtual reality, which at least comprises one or more head-mounted displays, a processor and one or more attitude controllers, wherein the head-mounted displays are in wired connection with the processor; the attitude controller is wirelessly connected with the processor; the processor is connected with the attitude controller in a one-to-one or one-to-many mode, and the processor is connected with the head-mounted display in a one-to-one or one-to-many mode. The utility model discloses a virtual reality has constructed one kind and can have repeatedly experimented, the virtual experiment scene of extensible, has reduced experiment cost and danger, has improved security, flexibility.

Description

Experiment examination system based on virtual reality

Technical Field

The utility model belongs to examination equipment field relates to an experiment examination system based on virtual reality.

Background

The examination is always the main mode for evaluating the knowledge and ability of students in China, and has an important guiding function on the key point of the basic education attention; along with the advancement of education reform, the requirement on the experimental ability of the examinee is more and more emphasized, and the examination of abilities such as memory, reasoning and the like in the traditional paper examination mode leads to 'insufficient practical ability' and 'low experimental quality' of the examinee.

How to make the examination positively influence the experimental ability cultivation and objectively and truly evaluate the practical ability and experimental quality of students is an important subject to be continuously explored. In addition, the following problems exist in the conventional experimental teaching practice and examination:

1. safety, such as the electrical part in a physical experiment, and the damage of experimental instruments and even safety accidents can be caused if the students do not operate in a standard way; in addition, some heavy metals such as mercury and thios are difficult to treat and recover, and are easy to pollute the environment.

2. The experiment cost is high, and precision instruments in physical experiments such as vernier calipers, balances and the like; the experimental articles such as concentrated sulfuric acid, hydrochloric acid and the like are volatile and difficult to store and recycle, and the consumption amount is large, so that the cost is high.

3. The phenomenon reappearance verification time is long or the phenomenon is difficult to reappear. The synthesis part of movement in physical experiments, photoelectric effect and the like, and the reaction time of dissolution, degradation, corrosion and the like in chemical experiments is long.

Based on the above problems, an experimental system with controllable experimental process, low cost and repeatable operation is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides an experimental examination system based on virtual reality, which comprises one or more head-mounted displays, a processor, and one or more attitude controllers, wherein the head-mounted displays are connected with the processor by wires;

the attitude controller is connected with the processor in a wired or wireless mode; the processor is connected with the attitude controller in a one-to-one or one-to-many mode, and the processor is connected with the head-mounted display in a one-to-one or one-to-many mode.

In an embodiment of the present invention, the processor is disposed inside the head-mounted display.

In order to meet different requirements of different experimental teaching and examinations, the virtual experimental scene comprises an experimental practice scene, an experimental demonstration scene, an experimental examination scene and a self-defined scene. The scenes can be switched according to the requirements of users through the operation of the attitude controller.

In an embodiment of the present invention, the head mounted display includes Oculus Rift, HTC Vive, Google Cardboard, 6 earVR.

In an embodiment of the present invention, the attitude controller includes a hand-held controller, a foot controller, and a head controller.

In an embodiment of the present invention, the attitude controller is connected to the processor through WiFi.

The embodiment of the utility model provides an in, experiment examination system still includes the server, the server is used for managing user's model, experiment database, score record.

The utility model has the advantages that:

1. the utility model discloses a virtual reality has constructed the virtual experiment scene that can relapse the experiment, has reduced experiment cost and danger, has improved the security.

2. The experiment speed can be controlled through the virtual experiment scene, the waiting time of the experiment is reduced, and the interest of students is stimulated.

3. Different scenes are constructed to meet different requirements of teaching, practice and examination, and reusability of the system is improved.

Drawings

FIG. 1 is a basic framework schematic of an embodiment of the present invention;

fig. 2 is one of the frame schematics in an embodiment of the invention;

fig. 3 is a second schematic diagram of a frame according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a middle virtual chemical experiment scene of the present invention.

1. The head-mounted display 2, the attitude controller 3 and the processor.

Detailed Description

As shown in fig. 1, a virtual reality-based experimental examination system includes one or more head mounted displays 1, one or more processors 3, one or more attitude controllers 2, the head mounted displays being connected to the processors by wires;

the attitude controller 2 is connected with the processor 3 in a wired or wireless mode, and the processor and the head-mounted display are gradually eliminated due to poor user experience in a wired or wireless mode. Common wireless connection modes include WiFi, ZigBee, bluetooth, wireless USB, 5G, and the like; the processor 3 and the attitude controller 2 are connected in a one-to-one or one-to-many manner, and the processor 3 and the head-mounted display 1 are connected in a one-to-one or one-to-many manner. The head mounted display 1 is configured to display a virtual experimental scene to a user; the attitude controller 2 generates corresponding motion information in a virtual experimental scene according to the motion state change of the user; the processor 3 is respectively connected with the head-mounted display 1 and the attitude controller 2, and is generally configured to control the head-mounted display 1 to generate a virtual experimental scene, and to perform grading according to the operation of the user in the virtual experimental test scene in response to the scene change made by the motion information generated by the attitude controller 2.

In some embodiments of the present invention, the motion information includes gesture changes, leg motion changes, and head motion changes, and the motion changes of the portion on the limb can be transmitted to the processor 3 through the sensor inside or outside the posture controller 2. Therefore, the attitude controller 2 includes a hand-held controller, a foot controller, and a head controller.

In an embodiment of the present invention, the head-mounted display 1 includes an Oculus Rift, an HTC Vive, a Google Cardboard, a GearVR, a Thalmic Labs MYO, or other head-mounted displays. The processor 3 adopts an application processor of an ARM company CPU core.

In the embodiment of the present invention, the attitude controller 2 is connected to the processor 3 through WiFi.

As shown in fig. 2, each user wears a head-mounted display, the gesture controller 2 captures motion information of the user and transmits the motion information to the same processor 3, and the processor 3 controls the head-mounted display 1 to make scene changes according to the motion information.

As shown in fig. 3, in the embodiment of the present invention, each user wears a head-mounted display, the processor 3 is integrated inside the head-mounted display 1, the gesture controller 2 captures the motion information of the user and transmits the motion information to the same processor 3, and each processor 3 controls the respective head-mounted display 1 to make a scene change according to the motion information. Each processor 3 updates scene changes of each respective user and scene changes of local users among other users through interaction with the server. The server and the processor are connected through Ethernet, WiFi and 5G networks to realize remote communication. In addition, the server may also manage the user's custom models, the database of models of the various elements, and the performance records. In particular, several experimental modes are realized by one-to-many, one-to-one processor-controller-head mounted display connection:

1. all students conduct independent experiments; 2. the teacher demonstrates the experiment, all students observe;

3. part of students conduct independent experiments, and part of students observe with the identity of an observer and simultaneously explain by teachers;

4. students take experimental examinations and teachers invigorate examinations.

The utility model discloses an in some embodiments, virtual experiment scene includes experiment exercise scene, experiment demonstration scene, experiment examination scene. The scenes can be switched by the attitude controller 2 according to the requirements of the user. In order to facilitate the conversion of different occasions of teaching, practice and examination, the virtual experiment scene comprises an experiment practice scene, an experiment demonstration scene, an experiment examination scene and a self-defined scene, and teachers or students can customize experiments according to own requirements.

The virtual laboratory scene construction method comprises the following specific steps:

step 1: acquiring original data required by constructing a virtual experimental scene, wherein the original data comprises scene space composition data, function composition data and the like; step 2: utilizing software such as 3DsMax, Maya, Photoshop and the like to make a scene three-dimensional model, drawing a scene map and an interactive interface UI; and step 3: importing the model file, the map file and the UI file into engine software to create a scene, a material and a project file; and 4, step 4: debugging scene material effect, and making a virtual experiment scene interactive program; and 5: exporting a simulation program PC client to a user computer for running; step 6: a user operates a client program in a mode of controlling a head-mounted display, a controller or a non-head-mounted display device and a keyboard and a mouse; and 7: the user performs examination evaluation after autonomous roaming and interactive exercise; and 8: and (4) evaluating whether the required achievement is qualified or not, returning to continue practice or taking the evaluation examination again if the required achievement is not met, and recording all achievements in a background database.

Taking physical experiments as an example, besides electrical components frequently appearing in teaching materials, the electrical components with low frequency of appearance, such as light emitting diodes, capacitors, single-pole multi-throw switches, sensitive currents G, logic gates appearing in logic circuits, simple sensors and the like, can be incorporated into the construction of an electrical component database. Then, a geometric model can be built by utilizing programming software such as OpenGL, Java3D, VRML, Unity3D and the like, or by means of CAD/CAM, a geometric model can be built after electrical elements, experimental equipment and the like are scanned by utilizing tools such as a3D scanner and the like, and the building process follows the relevant attributes of the constraint model of the basic physical law. After the database of the experimental equipment model is built, the electrical components are dragged out from the database and placed on the intelligent electronic whiteboard, circuit design is carried out, parameters (such as power supply regulation, sliding rheostat and switch) of each electrical appliance in a loop are regulated automatically, in a designed and workable path, corresponding experimental phenomena (such as small bulb lightening and dial pointer deflection) of the electrical components and parameters (such as indication numbers of an ammeter and a voltmeter) in operation are displayed to a designer of the path in real time, and therefore data can be recorded, or the circuit can be regulated or modified to carry out experiments again on the ammeter and the like. The built electric appliance element model can be dragged into a design panel at any time and connected by leads to form various circuits, and the physical laws are followed. The 'elemental' electric appliance reproduces a classical experiment in an experimental scene, or freely combines circuit elements according to user requirements, so that the degree of freedom of circuit design and the feasibility of actual operation are improved. Finally, virtual laboratories can implement common precision measurement tools: the virtual environment experience of a meter ruler, a vernier caliper, a dial indicator and even a length measuring instrument and the like is beneficial to improving the participation degree of the experiment and understanding the implementation process.

Referring to fig. 4, for a chemical experiment, an alcohol lamp, a test tube, an iron support, an evaporation pan, a condenser tube, a burette, etc. of an experimental instrument are respectively incorporated into the construction of an element database, names, physical properties, and chemical properties of reactants and products are entered into attributes defined by a model, and different scenes are triggered according to chemical laws specified in a teaching material.

The above description is only the preferred embodiment of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. A virtual reality based experimental examination system, characterized by at least comprising one or more head mounted displays, one or more processors, one or more attitude controllers,

the head mounted display is in wired connection with the processor;

the attitude controller is wirelessly connected with the processor, and the wireless connection mode comprises WiFi, ZigBee, Bluetooth, wireless USB and 5G;

the processor is connected with the attitude controller in a one-to-one or one-to-many mode, and the processor is connected with the head-mounted display in a one-to-one or one-to-many mode;

the head-mounted display is configured to display a virtual experimental scene to a user;

the attitude controller generates corresponding motion information in a virtual experiment scene according to the motion state change of the user;

the processor is respectively connected with the head-mounted display and the attitude controller and is configured to control the head-mounted display to generate a virtual experiment scene and respond to the scene change generated by the attitude controller to grade according to the operation of the user in the virtual experiment examination scene.

2. The virtual reality based experimental testing system of claim 1, wherein the processor is disposed inside the head mounted display.

3. The virtual reality based experimental exam system of claim 1, wherein the head mounted display comprises Oculus Rift, HTC Vive, Google Cardboard, GearVR, Thalmic Labs MYO.

4. The virtual reality based experimental examination system of claim 1, wherein the attitude controller comprises a hand-held controller, a foot-operated controller, a head controller.

5. The virtual reality based experimental examination system of claim 1, wherein the attitude controller is connected to the processor through WiFi.

6. The virtual reality based experimental examination system of claim 1, further comprising a server connected with the processor through ethernet, WiFi, 5G network.

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