CN201741291U - Infrared virtual reality teaching system based on Wiimote - Google Patents

Abstract

The utility model discloses an infrared virtual reality teaching system based on Wiimote. The virtual reality teaching system is composed of a projector, a projection screen, a computer, a Wiimote camera and a marker; the projector, the Wiimote camera and the marker are located on the projection screen On the same side and towards the front of the projection screen; the computer is connected with the projector and the Wiimote camera respectively; the computer is provided with a video capture card. The utility model utilizes the infrared imaging principle of the camera to not only realize the functions of the current interactive virtual reality teaching system conveniently, but also realize multi-point simultaneous control and remote control without contact with the screen, and has low cost and does not require special virtual reality teaching System projection screen, convenient and flexible, easy to deploy.

Description

Infrared virtual reality teaching system based on Wiimote

technical field

The utility model belongs to the electronic field and relates to a teaching device, in particular to a Wiimote-based infrared virtual reality teaching system.

Background technique

The virtual reality teaching system can better help express opinions and thoughts. A key problem in the virtual reality teaching system is the feature point location. The current sensors used for product positioning mainly use piezoelectric, electromagnetic and infrared scanning grid sensors, which make deployment and movement difficult. At the same time, the product production process is more complicated and the price is more expensive, which brings certain difficulties to popularization and use.

Utility model content

The utility model locates the characteristic points through the Wiimote camera, combines the computer and the miniature projector, enhances the interactivity and expressiveness of teaching, and is more flexible and easy to deploy, and reduces the cost.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of infrared virtual reality teaching system based on Wiimote is provided, and this virtual reality teaching system is made of projector, projection screen, computer, Wiimote camera and marker; Instrument, Wiimote camera and marker are located on the same side of the projection screen and towards the front of the projection screen; the computer is connected with the projector and the Wiimote camera respectively; the computer is provided with a video capture card.

The Wiimote camera is provided with an infrared filter. The marker is an infrared laser pointer, which includes a pen cover, a pen body, a touch panel, a switch and an infrared laser lamp. The utility model utilizes the infrared imaging principle of the camera to not only realize the functions of the current interactive virtual reality teaching system conveniently, but also realize multi-point simultaneous control and remote control without contact with the screen, and has low cost and does not require special virtual reality teaching System projection screen, convenient and flexible, easy to deploy.

Description of drawings

Fig. 1 is a schematic structural diagram of the external virtual reality teaching system of the present invention.

Among them: 1 is a computer; 2 is a projector; 3 is a Wiimote camera; 4 is a marker; 5 is a projection screen.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail: referring to Fig. 1, a kind of infrared virtual reality teaching system based on Wiimote, this virtual reality teaching system is made of projector, projection screen, computer, Wiimote camera and marker; Projector, Wiimote camera and marker are positioned at the same side of the projection screen and towards the front of the projection screen; the computer is respectively connected with the projector and the Wiimote camera; the computer is provided with a video capture card. The Wiimote camera is provided with an infrared filter.

The marker is an infrared laser pointer, which includes a pen cover, a pen body, a touch panel, a switch and an infrared laser lamp. The virtual reality teaching system consists of a miniature projector (or common projector), a projection screen, a computer, a Wiimote camera and a marker. An infrared laser emitter is installed on the nib of the virtual reality teaching pen, and the infrared laser irradiates on the screen of the virtual reality teaching system to form a light spot, which is captured by the Wiimote camera, and the image is transmitted to the computer through the acquisition card, and calculated by the image processing algorithm Based on the position of the screen, the positioning of the pen tip is realized. Then use the positioning information of the pen to realize corresponding operations and generate images according to user needs, and use the projector to project the image content onto the teaching screen to construct a large-screen, interactive collaborative meeting or teaching environment. In addition, the system supports portable projectors, which can be carried on the body and can perform operations on any reflective plane. There are two types of systems, one is to use a large fixed projector, which is designed for large classes, and the other is to use a miniature projector, which can be used not only for small classes, but also for teachers’ office work. projected on the workbook.

Since the projection lens of the projector is usually equipped with an infrared cut filter, there is very little infrared component in the projected light. Therefore, an infrared laser emitter and a laser control switch are installed on the teaching pen, and the laser beam hits the screen to form an infrared spot, which can be clearly captured by a camera capable of sensing infrared light. The obtained image is transmitted to the computer, and the position of the pen is obtained through processing and calculation to perform corresponding processing to generate an image, and the projector is used to project the image content on the virtual reality screen. At the same time, install the function button on the teaching pen and send out the signal through the wireless mode, receive it with the wireless module of the USB interface, and send it to the computer to realize the expansion of the operation function, complete the right mouse click, page up and down and other operations.

Among them, the 850nm infrared filter can remove the interference of the light (projection light and sunlight) with a wavelength less than 850nm on the infrared light spot emitted by the pen of the virtual reality teaching system, which enhances the robustness of the system and greatly simplifies the design of the system structure. difficulty.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments. It cannot be determined that the specific embodiments of the present invention are limited thereto. Under the circumstances, some simple deduction or replacement can also be made, all of which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims (3)

1. based on the infrared virtual reality teaching system of Wiimote, it is characterized in that: this virtual reality teaching system is made of projector, projection screen, computer, Wiimote camera and marker; Described projector, Wiimote camera and marker are positioned at projection screen same Side and towards the front of the projection screen; the computer is connected with the projector and the Wiimote camera respectively; the computer is provided with a video capture card. 2. the infrared virtual reality teaching system based on Wiimote as claimed in claim 1, is characterized in that: described Wiimote camera head is provided with infrared filter. 3. The infrared virtual reality teaching system based on Wiimote as claimed in claim 1, wherein the marker is an infrared laser pointer, and the infrared laser pointer includes a pen cover, a pen body, a touch pad, a switch and an infrared laser lamp.

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