CN205158680U - Multimedia teaching system - Google Patents
Multimedia teaching system Download PDFInfo
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- CN205158680U CN205158680U CN201520873014.4U CN201520873014U CN205158680U CN 205158680 U CN205158680 U CN 205158680U CN 201520873014 U CN201520873014 U CN 201520873014U CN 205158680 U CN205158680 U CN 205158680U
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Abstract
The utility model discloses a multimedia teaching system, its characterized in that includes a sound video matrix and two at least locellus modules, the locellus module includes the computer, show stand in kind, video switch, the projecting apparatus, the power amplifier, microphone and audio amplifier, video switch's video input end links respectively to computer and show stand in kind, video switch's video output end links respectively to projecting apparatus harmony video matrix, sound video matrix's video output end also links to the projecting apparatus, the audio input end of power amplifier links respectively to computer harmony video matrix, the microphone links to the microphone input end of power amplifier through wired or wireless mode, the audio output of power amplifier links respectively to audio amplifier sound video matrix. The utility model discloses have effectually in real time, input/output's switching if mix programmable controller and channel controller, can be carried out to sound video matrix in each classroom to be convenient for projection in kind and careful explanation, the control of being convenient for.
Description
Technical field
The utility model relates to multimedia teaching field.
Background technology
Along with the development of electronic technology, there is numerous multimedia education systems.
Patent CN201520093746.1 relates to a kind of multimedia net work teaching terminal, comprise school's Intranet tutoring system and long-range outer net educational system, school's Intranet tutoring system comprises teacher's main control computer, some computer for learnings, monitoring computer, school net and student's PC, computer for learning is connected with teacher's main control computer by roll calling system, monitoring computer is connected with teacher's main control computer, student's PC is connected with teacher's main control computer by school net, long-range outer net educational system comprises switch, the Internet, remote education network, parent computer and PC, the Internet is connected with school net by switch, remote education network and Internet connection, parent computer, PC is connected with remote education network respectively.This multimedia net work teaching terminal can realize on-the-spot and online sync instruction, even if make student also can not learn at teaching scene, and the head of a family and online student thereof can be made also to carry out on-line study and exchange.
Patent CN201520257252.2 discloses a kind of multimedia teaching facility, comprises dais, projector, screen; Described dais comprises deck plate and is located at the multimedia host below table top, is provided with display screen in groove, and multimedia host is connected by data line with mouse, keyboard respectively, and projector comprises projector case, projection lens, heating radiator, adjusting knob; Screen comprises the rotating shaft of rolling curtain, screen curtain, screen track, and what be provided with coupling writes terminal simultaneously, and the data of writing in terminal passes on screen by main frame by wireless connections main frame; Write terminal and use advanced panel computer processing and fabricating, multimedia equipment is provided with wireless transmission terminal, realizes student be in and synchronously attend class by wireless transmission terminal.The part that teacher explains is transferred to giant-screen by writing terminal by this utility model at any time, and the projector solving existing teaching can only make courseware form, is difficult to produce interactive problem with student, improves the enthusiasm of attending class of student.
Existing multimedia education system, the poor effect of real-time synchronization teaching.
Utility model content
The utility model, for the deficiencies in the prior art, provides a kind of multimedia education system, and this system has good real-time synchronization effect, can realize multiple classroom and synchronously attend class.
The technical solution of the utility model is as follows:
A kind of multimedia education system, it is characterized in that comprising an audio and video matrix and at least two locellus modules, described locellus module comprises computer, article showing platform, video switcher, projector, power amplifier, microphone and audio amplifier, the video output terminals of computer is connected to the first video inputs of video switcher by video line, the video output terminals of article showing platform is connected to the second video inputs of video switcher by video line, first video output terminals of video switcher is connected to the first video inputs of projector by video line, second video output terminals of video switcher is connected to a certain video inputs of audio and video matrix by video line, the a certain video output terminals of audio and video matrix is connected to the second video inputs of projector by video line, the audio output of computer is connected to the first audio input end of power amplifier by tone frequency channel wire, the a certain audio output of audio and video matrix is connected to the 3rd audio input end of power amplifier by tone frequency channel wire, microphone is connected to the microphone input of power amplifier by wired or wireless mode, first audio output of power amplifier is connected to audio amplifier by tone frequency channel wire, second audio output of power amplifier is connected to a certain audio input end of audio and video matrix by tone frequency channel wire.
Further, for the ease of carrying out the switching control of input and output to audio and video matrix in each classroom, described multimedia education system also comprises Programmable Logic Controller, Programmable Logic Controller is connected to audio and video matrix by the first control line, locellus module also comprises the channel controller being mainly used in controlling the input of audio and video matrix, output channel is selected, and channel controller is connected to Programmable Logic Controller by the second control line.
Further, because existing projector is all furnished with the control interface of RS-232, Programmable Logic Controller is connected to projector by the 3rd control line, then can be controlled the switch of projector and signal switching by channel controller.
Further, the two ends of the first control line are RS-232 interface, and the two ends of the second control line are RS-485 interface or RS-232 interface, and the two ends of the 3rd control line are RS-232 interface.
Compared with prior art, the utility model has following beneficial effect: the utility model uses audio and video matrix to build whole real-time synchronization tutoring system, makes all imperceptible time delay of the personnel in multiple classroom, and audio-video signal transmission is stable, and live effect is good; The signal of the vision signal that locellus module adopts video switcher to export computer and article showing platform output switches, and clearly can output to the projector in each classroom, be convenient to explain meticulously to material object; By Programmable Logic Controller and channel controller, the switching of input and output can be carried out in each classroom to audio and video matrix, be convenient to control.
Accompanying drawing explanation
Fig. 1 is that one of the present utility model implements block diagram;
Fig. 2 is the enforcement block diagram of a kind of improvement of the present utility model.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of multimedia education system, comprise an audio and video matrix and at least two locellus modules, described locellus module comprises computer, article showing platform, video switcher, projector, power amplifier, microphone and audio amplifier, the video output terminals of computer is connected to the first video inputs of video switcher by video line, the video output terminals of article showing platform is connected to the second video inputs of video switcher by video line, first video output terminals of video switcher is connected to the first video inputs of projector by video line, second video output terminals of video switcher is connected to a certain video inputs of audio and video matrix by video line, the a certain video output terminals of audio and video matrix is connected to the second video inputs of projector by video line, the audio output of computer is connected to the first audio input end of power amplifier by tone frequency channel wire, the a certain audio output of audio and video matrix is connected to the 3rd audio input end of power amplifier by tone frequency channel wire, microphone is connected to the microphone input of power amplifier by wired or wireless mode, first audio output of power amplifier is connected to audio amplifier by tone frequency channel wire, second audio output of power amplifier is connected to a certain audio input end of audio and video matrix by tone frequency channel wire.Computer is connected to file server and internet by router.
In the present embodiment, audio and video matrix selects CREATORPt-VGA0808-A, and this product is the audio-video signal input of a support 8 road, the professional Inverse problem equipment that 8 road audio-video signals export.Can be used for multiple pcs signal and audio video input signals is synchronous or asynchronised handover to the arbitrary output channel in multiple-channel output passage.Have RS-232 communication interface and network interface, convenient connection with computer, telechirics or various remote control device is applied.It adopts FPGA (Field Programmable Gate Array) to display circuit, arbitrarily mutual switching; Support audio-visual synchronization or be separated handoff functionality; Support passage bridge priority assignation, audio frequency and video passage bridge authority can separately be managed independently.Article showing platform selects HZ-H350, and its sharpness is 1000TV line, supports title, negative film, freezes, rotates, with shielding the image stunt such as contrast, mirror image, text, black and white, PIP, Scroll, Spot, ReadingWindow, Mask.Power amplifier selects hushan-p2100k, and this product has four road source of sound inputs and switches; Five road microphones input and each road microphone volume is adjustable separately; Microphone excitation, reverberation, feedback quantity independence continuously adjustabe, microphone time delay 125ms, 147ms, 172ms, 200ms fourth gear is optional; Microphone and circuit height low bass tones adjustable separately.
In the present embodiment, need to carry out the switching of audio frequency and video at audio and video matrix by respective keys.
Embodiment 2
As shown in Figure 2, also comprise Programmable Logic Controller, locellus module also comprises channel controller.Programmable Logic Controller selects CR-PGM III, and this is a high performance network programmable control host machine supporting with audio and video matrix, and it adopts ARM11CPU, 256 MB of memory, 1GFlash flash memory; It comprises the infrared emission interface of 8 road independently programmables, supports to control the identical or different infrared equipment of multiple stage; Comprise 8 road independently programmable RS-232/422/485 control interfaces, user-programmable arranges various control agreement and code.Pt-MCP100 selected by channel controller, adopts RS-485 communication interface.Channel controller carries out communication by RS-485 communication interface and Programmable Logic Controller.Programmable Logic Controller is controlled audio and video matrix and projector by RS-232 communication interface.
In the present embodiment, both can carry out the switching of audio frequency and video at audio and video matrix by respective keys, channel controller also can be used easily to carry out passage bridge to audio and video matrix.
Claims (4)
1. a multimedia education system, it is characterized in that comprising an audio and video matrix and at least two locellus modules, described locellus module comprises computer, article showing platform, video switcher, projector, power amplifier, microphone and audio amplifier, the video output terminals of computer is connected to the first video inputs of video switcher by video line, the video output terminals of article showing platform is connected to the second video inputs of video switcher by video line, first video output terminals of video switcher is connected to the first video inputs of projector by video line, second video output terminals of video switcher is connected to a certain video inputs of audio and video matrix by video line, the a certain video output terminals of audio and video matrix is connected to the second video inputs of projector by video line, the audio output of computer is connected to the first audio input end of power amplifier by tone frequency channel wire, the a certain audio output of audio and video matrix is connected to the 3rd audio input end of power amplifier by tone frequency channel wire, microphone is connected to the microphone input of power amplifier by wired or wireless mode, first audio output of power amplifier is connected to audio amplifier by tone frequency channel wire, second audio output of power amplifier is connected to a certain audio input end of audio and video matrix by tone frequency channel wire.
2. multimedia education system according to claim 1, characterized by further comprising Programmable Logic Controller, Programmable Logic Controller is connected to audio and video matrix by the first control line, locellus module also comprises the channel controller being mainly used in controlling the input of audio and video matrix, output channel is selected, and channel controller is connected to Programmable Logic Controller by the second control line.
3. multimedia education system according to claim 2, is characterized in that Programmable Logic Controller is connected to projector by the 3rd control line.
4. multimedia education system according to claim 3, it is characterized in that the two ends of the first control line are RS-232 interface, the two ends of the second control line are RS-485 interface or RS-232 interface, and the two ends of the 3rd control line are RS-232 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520873014.4U CN205158680U (en) | 2015-11-05 | 2015-11-05 | Multimedia teaching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520873014.4U CN205158680U (en) | 2015-11-05 | 2015-11-05 | Multimedia teaching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205158680U true CN205158680U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520873014.4U Expired - Fee Related CN205158680U (en) | 2015-11-05 | 2015-11-05 | Multimedia teaching system |
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| Country | Link |
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| CN (1) | CN205158680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336227A (en) * | 2015-11-05 | 2016-02-17 | 华南理工大学 | Multimedia real-time synchronization teaching system |
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2015
- 2015-11-05 CN CN201520873014.4U patent/CN205158680U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336227A (en) * | 2015-11-05 | 2016-02-17 | 华南理工大学 | Multimedia real-time synchronization teaching system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20181105 |