CN105225552B - A kind of SCM Based computer video instructional device - Google Patents

Abstract

The invention relates to a computer video teaching device based on a single-chip microcomputer, comprising a single-chip microcomputer connected with an input device, and the single-chip microcomputer includes a serial communication module, a video switching module, a VGA switching module, an audio control module, an infrared module, and a power supply and environment control The video switching module is connected with a CD drive, video recording equipment, booth, projection equipment and monitoring equipment; the VGA switching module is connected with a desktop computer, a portable computer, a booth, projection equipment and a display device; the audio control module is connected with a desktop Computers, microphones, video equipment, decks, disc drives and amplifiers. The invention makes full use of the modern audio-visual equipment, enriches the teaching means, expands the teaching resources, and reduces the labor intensity of the teacher's lectures. In addition, the audio-visual teaching form makes it easier for students to understand and accept the teaching content, thereby Promoted the improvement of teaching quality.

Description

A Computer Video Teaching Device Based on SCM

technical field

The invention relates to the field of computer video teaching, in particular to a computer video teaching device based on a single-chip microcomputer.

Background technique

With the rapid development of computer multimedia technology and digital communication technology, human society has entered the era of informationization, especially in the field of education and teaching, multimedia teaching has been rapidly popularized due to its diversity of functions. A large number of electronic conference equipment such as slide projectors, projectors, video playback equipment, and sound reinforcement equipment have entered teaching places. However, teachers often cannot make full use of these devices in the process of teaching, and need to spend a lot of time on manual debugging operations, which often affect the teaching effect due to frequent switching of various devices and on-demand control of the environment.

Contents of the invention

The purpose of the invention is to propose a computer video teaching device based on a single-chip microcomputer in order to solve the background technology.

In order to achieve the above object, the present invention adopts the following technical solutions:

A computer video teaching device based on a single-chip microcomputer, comprising a single-chip microcomputer, the single-chip microcomputer is connected with an input device, and the single-chip microcomputer includes a serial communication module, a video switching module, a VGA switching module, an audio control module, an infrared module, and a power supply and an environment control module , the serial communication module is connected with a host computer, the video switching module is connected with a disc drive, video recording equipment, booth, projection equipment and monitoring equipment, and the VGA switching module is connected with a desktop computer, a portable computer, a booth, a projection equipment and display equipment, the audio control module is connected with a desktop computer, a portable computer, a microphone, a video recording device, a deck, a CD drive and a power amplifier, and the infrared module includes an infrared receiving module and an infrared emitting module.

On the basis of above-mentioned technical scheme, can have following further technical scheme:

The serial communication module is a part that uses the RS-232 standard to send control signals or communicate with various serial port devices through the serial port. Each control signal of the main control chip must be transmitted through this part, and the request of each sub-module must also be transmitted to the main control module through this part. During implementation, due to the difference in signal standards between the receiving end and the sending end, it is necessary to use the corresponding chip to adjust and convert the signal. Another part of the function of the serial communication sub-module is to connect the host in the multimedia classroom to the local area network or campus network through the serial port, and then cooperate with the corresponding software to easily realize networking in teaching and educational administration.

The video switching module is used to complete the switching of the system video signal and ensure the quality of the output signal. The switching operation of multiple signals can be realized through the buttons on the control panel or controlled by the control signal of the main control chip.

The VGA switching module is mainly applied on computer equipment with a VGA display card, and is aimed at some equipment that needs to display color and high-resolution images. Today's graphics and images have relatively high requirements on color and resolution, and most of the courses in colleges and universities that need to use multimedia classrooms for teaching are graphics and images.

The audio control module is used to switch and control the volume of the audio signal connected to the system, and ensure the quality of the output signal. The audio signal input is divided into six channels. This module will complete the switching control, superposition and volume adjustment of the six channels of signals, and finally output by the power amplifier device.

There are many types of equipment in the multimedia classroom, and the voltage and regulation methods required by each multimedia equipment have their own characteristics. The power supply and environment control module are used to provide power for various control devices, and the power supply of IC chips used in each sub-module in the multimedia central control system is also given here. The main function of this module is to realize the 220V to form a voltage that meets the chip requirements through the voltage transformation and voltage stabilization circuit. Controlling the environment refers to lighting, electric curtains, and electric curtains, such as lighting or lifting control.

The infrared module is used to gather a plurality of infrared remote controllers together, use one learnable infrared remote controller to centrally control multiple devices with different functions, and make the remote control of various multimedia devices all in one.

The present invention applies modern multimedia control technology to cooperatively control modern audio-visual equipment such as computers, video disc players, video recorders, and video display stands, and uses infrared equipment to centrally control peripheral equipment such as electric curtains, lights, and curtains, avoiding the need to spend a lot of time Frequent switching of various types of equipment, debugging of the environment, and by setting up large-screen projections, a modern multimedia audio-visual teaching environment with high-precision large-screen demonstrations, high-fidelity sound quality, and controlled sound and light backgrounds is created. This computer video teaching device enables modern The audio-visual equipment has been fully developed and utilized, which enriches the teaching methods, expands the teaching resources, and reduces the labor intensity of teachers' lectures. In addition, the audio-visual teaching form makes it easier for students to understand and accept the teaching content, thereby promoting the quality of teaching. improvement.

Description of drawings

Fig. 1 is a working principle diagram of a computer video teaching device based on a single-chip microcomputer proposed by the present invention.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

With reference to Fig. 1, a kind of computer video teaching device based on single-chip microcomputer comprises single-chip microcomputer, and described single-chip microcomputer is connected with input device, and single-chip microcomputer comprises serial communication module, video switching module, VGA switching module, audio frequency control module, infrared module and power supply And the environment control module, the serial communication module is connected with the upper computer, the video switching module is used to complete the switching of the system video signal and ensure the quality of the output signal, the switching operation of the multi-channel signal can be through the button on the control panel The realization can also be controlled by the control signal of the main control chip. The video switching module is connected with a disc drive, video recording equipment, booth, projection equipment and monitoring equipment. The video switching module is used to complete the switching and monitoring of the system video signal. To ensure the quality of the output signal, the switching operation of multi-channel signals can be realized through the buttons on the control panel or can be controlled by the control signal of the main control chip. The VGA switching module is connected with a desktop computer, a portable computer, a booth, a projection device and As for the display device, the VGA switching module is mainly used on computer devices with VGA display cards, and is aimed at some devices that need to display color and high-resolution images. Present graphics and images have relatively high requirements on color and resolution, and in colleges and universities need to use multimedia classrooms for teaching and most of them are graphics and image courses. The audio control module is connected with desktop computers, portable computers, Microphone, video recording equipment, deck, CD drive and power amplifier, the audio control module is used to switch and volume control the audio signal connected to the system, and ensure the quality of the output signal. The audio signal input is divided into six channels. This module will complete the switching control, superposition and volume adjustment of the six channels of signals, and finally output by the power amplifier device. The infrared module includes an infrared receiving module and an infrared transmitting module. The infrared module is used to combine multiple Infrared remote controllers are combined together, and a learnable infrared remote controller is used to centrally control multiple devices with different functions, so that the remote control of various multimedia devices is all in one. There are many types of devices in the multimedia classroom, and each multimedia The voltage and control methods required by the equipment have their own characteristics. The power supply and environment control module are used to provide power for various control devices, and the power supply of IC chips used in each sub-module in the multimedia central control system is also given here. The main function of this module is to realize the 220V to form a voltage that meets the chip requirements through the voltage transformation and voltage stabilization circuit. Controlling the environment refers to lighting, electric curtains, and electric curtains, such as lighting or lifting control.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (1)

1. a kind of SCM Based computer video instructional device, including microcontroller, it is characterised in that：The microcontroller connection Have an input equipment, and microcontroller include serial communication module, it is video frequency switching module, VGA handover modules, audio frequency control module, red Outer mold piece and power supply and environmental control module, the serial communication module are connected with host computer, the video frequency switching module connection There are optical disc apparatus, video recording equipment, exhibition booth, projection device and supervision equipment, the VGA handover modules to be connected with desk-top calculating Machine, portable computer, exhibition booth, projection device and display equipment, the audio frequency control module are connected with desktop computer, portable Formula computer, microphone, video recording equipment, deck, optical disc apparatus and power amplifying device, the infrared module include infrared receiver Module and infrared transmission module, the serial communication module are by serial port using rs-232 standard to various serial jaws equipments The part for sending control signal or being communicated；Each of main control module of the microcontroller controls signal must be by described Serial communication module passes, and the request of each submodule also must be transmitted to the master control by the serial communication module Module；When realizing, due to receiving the difference with transmitting terminal to signal standards, it is also necessary to carry out signal using corresponding chip It adjusts and converts；Another part function of serial communication module is can be connected the host in multi-media classroom by serial port Access to LAN or campus network, the video frequency switching module are used to complete the switching to video signal system and ensure output signal Quality, can be realized by the button on control panel to the handover operation of multiple signals can also pass through the control of main control chip Signal control switching, the VGA handover modules are applied on the computer equipment for having VGA display cards, colored for needing to show The equipment of high-definition picture, the audio frequency control module is used to switch over the audio signal of access system and the control of volume System, and to ensure the quality of output signal；Six tunnels of audio signal input point, the audio frequency control module will be completed to believe six tunnels Number control, superposition and volume adjustment are switched over, is finally exported by power amplifying device, the power supply and environmental control module are used for Power supply is provided for various control devices, the IC chip power supply of each submodule application also will be at this in multi-media central control system In provide；The major function of the power supply and environmental control module is to realize to meet 220V by transformation and regulator circuit formation The voltage that chip requires, the infrared module can be learnt infrared for gathering together multiple IR remote controllers with one The equipment that remote controler carrys out more different function of centralized control, allows the remote control All-in-Ones of a variety of different multimedia equipments, wherein institute It states computer video instructional device and includes at least two desktop computers.