CN1831895A - TV experimental remote teaching system based on wideband interconnection network - Google Patents
TV experimental remote teaching system based on wideband interconnection network Download PDFInfo
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- CN1831895A CN1831895A CN 200610042073 CN200610042073A CN1831895A CN 1831895 A CN1831895 A CN 1831895A CN 200610042073 CN200610042073 CN 200610042073 CN 200610042073 A CN200610042073 A CN 200610042073A CN 1831895 A CN1831895 A CN 1831895A
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Abstract
A remote teaching system of TV experiment based on wideband Internet is featured as sending control command from experiment end to controller by experiment end server then outputting signal to color TV set with modified M 11 core by controller, selecting experimental items and logging on experiment server through wideband internet terminal for carrying out real time simulation TV experiment sending converted real time TV image to said server by shooting tube and sending it to operator terminal after it is coded, finally generating an operator record at experiment end server.
Description
Technical field
The present invention relates to a kind of remote teaching method of TV experimental, relate in particular to a kind of TV experimental remote teaching system, belong to long-range bidirectional transfer of information in internet and control technology field based on broadband internet.
Background technology
In today of rapid development of information technology, how to utilize internet information resource effectively and fully, make more people can accept modern education, improve people's know-how, be one of educator's target of working hard.Traditional laboratory TV experimental is subjected to the restriction in time, space, can not satisfy the needs of long-distance education.Both at home and abroad in tele-experimentation teaching, generally adopt multimedia technology that experiment content is write in advance or recorded at present, deposit hereof, call during use again, the method does not have real-time, is difficult for comparing with the actual TV image effect.For satisfying the experimenter carries out TV experimental on time, space requirement, developing TV experimental is placed on the network, carries out the remote tv experimental teaching, realized the purpose that information resources are shared.
Summary of the invention
The present invention is directed to the deficiency that existing TV experimental technology exists, provide a kind of and can satisfy the experimenter carries out TV experimental on time, space requirement, carry out the TV experimental remote teaching system based on broadband internet of remote tv experimental teaching, TV experimental can be placed on the network, realize that information resources are shared.
For achieving the above object, the present invention adopts following technical solution:
Should hold server by experiment based on the TV experimental remote teaching system of broadband internet, camera, the televisor of the controller and the transformation of the way is formed, experiment end server is interior with the function software that can finish requirement of experiment, controller is interior with communications control software, camera is installed in the experiment scene and is connected with experiment end server, controller links to each other by connecting bus with the televisor of the transformation of the way, experimental terminal is delivered to controller by experiment end server interface by connecting line according to the steering order that requirement of experiment sends, again by the televisor of controller output signal to the transformation of the way, finish the selection of experimental project, terminal login experiment end server by broadband internet, and operate every real time modelling TV experimental by the content of screen display, real-time television picture after the conversion is delivered to experiment end server by camera, be sent to operator's terminal behind the coding, generate an operator's record at last at experiment end server end.
Function software in the experiment end server can finish requirement of experiment, comprises webpage, experimental project interface, and principle of work is to operate by web page files, checks form document understanding experiment situation.
Experiment end server be PIV/2.8GHz, in save as 512M or computing machine above, that have USB and RS232 interface.
Camera adopts has the CMOS/CCD camera of 1,300,000 pixels, and has USB interface output.
Experiment end server interface is connected by the RS232 connecting line with controller, and the COM1 of server and the COM end of controller are coupled together.
The output control line that controller comprises single-chip microcomputer, multichannel electronic interlocking switch, manual button, LED light and has photoelectricity to isolate, single-chip microcomputer is interior with communications control software, be connected with server COM1 by the RS232 interface by single-chip microcomputer, the output of single-chip microcomputer is connected to multichannel electronic interlocking switch, the output control line of isolating through photoelectricity exports external-connected port to, and multichannel electronic interlocking switch is provided with manual button and LED light.The principle of work of the communications control software in the single-chip microcomputer is determining by web page selection, drive by dynamic link library, send sexadecimal instruction 00H～12H to the RS232 communication port, single-chip microcomputer is finished selected experimental project according to command adapted thereto drive output mouth.
The televisor of the transformation of the way is the colour television set of the M11 movement of the transformation of the way, and its circuit is changed part and is: line-scan circuit, and field-scanning circuit, brightness/field excitation circuit, chrominance channel, the aberration circuit, RGB primary colours circuit is connected with controller by connecting bus.Televisor after the transformation of the way both can disconnect connecting bus, use as colour television set separately, but again connecting bus as experimental subjects.
Experimental project is colored simulated television experiment.
The real time modelling TV experimental is meant to have plays the function that TV station is performing in a radio or TV programme the program of analog/digital (receiving conversion by set-top box), because Network Transmission and software processes have the time-delay of certain hour.
Steering order is some groups of sexadecimal numbers, respectively corresponding every content choice: experiment item number+recovery normal condition is selected.
Server code is meant the coding with Windows Media Encode.
Operator's record is meant that the project with user's operation deposits in the form document, is associated with its student number.
The present invention is based on broadband internet, TV experimental can be placed on the network, can satisfy the experimenter carries out TV experimental on time, space requirement, realized that information resources are shared.
Description of drawings
Fig. 1 is the composition structural representation of TV experimental remote teaching system of the present invention.
Fig. 2 is the process flow diagram of function software of the present invention.
Fig. 3 is the process flow diagram of communications control software of the present invention.
Fig. 4 is the single-chip microcomputer and the interface circuit schematic diagram of controller of the present invention.
Fig. 5 is the multichannel electronic interlocking on-off circuit schematic diagram of controller of the present invention.
Fig. 6 is the output control line circuit theory diagrams that have photoelectricity to isolate of controller of the present invention.
Fig. 7 is the line-scan circuit figure of colour television set of the M11 movement of the transformation of the way of the present invention.
Fig. 8 is the field-scanning circuit circuit diagram of colour television set of the M11 movement of the transformation of the way of the present invention.
Fig. 9 is the brightness/field excitation signal circuit diagram of colour television set of the M11 movement of the transformation of the way of the present invention.
Figure 10 is the chrominance channel circuit diagram of colour television set of the M11 movement of the transformation of the way of the present invention.
Figure 11 is the aberration circuit diagram of colour television set of the M11 movement of the transformation of the way of the present invention.
Figure 12 is the RGB primary colours circuit diagram of colour television set of the M11 movement of the transformation of the way of the present invention.
Among the figure: 1, experiment end server, 2, camera, 3, controller, 4, the colour television set of the M11 movement of the transformation of the way, 5, single-chip microcomputer, 6, manual button, 7, LED light, 8, photoelectrical coupler.
Embodiment
Embodiment:
Fig. 1 has provided the composition structural representation of TV experimental remote teaching system of the present invention.Hold the colour television set 4 of the M11 movement of server 1, camera 2, controller 3 and the transformation of the way to form by experiment.Experiment end server 1 for PIV/2.8GHz, in save as 512M or computing machine above, that have USB and RS232 interface, it is interior with the function software that can finish requirement of experiment, this function software comprises webpage, experimental project interface etc., principle of work is to operate by web page files, check form document understanding experiment situation, its process flow diagram is seen shown in Figure 2.Camera 2 adopts has the CMOS/CCD camera of 1,300,000 pixels, and has USB interface output, and it is on-the-spot to be installed in experiment, is connected with experiment end server 1 by the USB line.Experiment end server 1 Interface and Controler 3 connect by the RS232 connecting line, and the COM1 of server and the COM end of controller are coupled together.Fig. 4, Fig. 5, Fig. 6 have provided the circuit theory diagrams of controller.The output control line (referring to Fig. 6) that comprises single-chip microcomputer 5 (referring to Fig. 4), multichannel electronic interlocking switch (referring to Fig. 5), manual button, LED light and have photoelectricity to isolate, the model of single-chip microcomputer 5 is 89C51, be connected with server COM1 by the RS232 interface, the output of single-chip microcomputer is connected to multichannel electronic interlocking switch, the output control line of isolating through photoelectricity exports external-connected port to, and multichannel electronic interlocking switch is provided with manual button and LED light.The process flow diagram of the communications control software that writes in the single-chip microcomputer is seen shown in Figure 3, its principle of work is determining by web page selection, drive by dynamic link library, send sexadecimal instruction 00H～12H to the RS232 communication port, single-chip microcomputer is finished selected experimental project according to command adapted thereto drive output mouth.This controller has on-site manual/Long-distance Control, by 12 experimental projects of operated from a distance control, its principle of work: energising back communications control software is (normally) state that resets, and this moment, all output ports were open-circuit condition, and its RS232 port is in data receiving state simultaneously.After the RS232 port receives data, communications control software is according to instruction, drive the output port of single-chip microcomputer 5 correspondences, this port drives the control end of multichannel interlocking electronic switch again, make its corresponding LED lamp light and drive photoelectrical coupler 8 and carry out the conducting of output port circuit, the selection of finished item.After the RS232 port receives another data, repeat said process, but what drive is the control end of another multichannel interlocking electronic switch, realizes the switching of project.Manually control then is directly to press corresponding button, is finished the conducting of lighting of LED lamp and output port circuit by multiplexer electronic switching for space.Adopt 8 of photoelectrical couplers to be used to solve the charged problem of M11 movement base plate.
The televisor of the transformation of the way is the colour television set 4 of the M11 movement of the transformation of the way, is 14-21 cun, and its circuit is changed part and is: line-scan circuit, field-scanning circuit, brightness/field excitation circuit, chrominance channel, the aberration circuit, RGB primary colours circuit is by connecting line be connected with controller (referring to Fig. 6).Televisor after the transformation of the way both can disconnect connecting line, use as colour television set separately, but again connecting line as experimental subjects.
The line-scan circuit figure of the colour television set of the M11 movement of the transformation of the way sees Fig. 7, and principle is the resistance value of capable oscillatory circuit for a change, and its oscillation frequency is changed.
The field-scanning circuit figure of the colour television set of the M11 movement of the transformation of the way sees Fig. 8, and principle is the resistance value of an oscillatory circuit for a change, and its oscillation frequency is changed.
Brightness/field excitation the circuit diagram of the colour television set of the M11 movement of the transformation of the way is seen Fig. 9, and principle is connection/short circuit luminance signal, on/off field excitation signal circuit.
The chrominance channel circuit diagram of the colour television set of the M11 movement of the transformation of the way is seen Figure 10, and principle is a connection/short circuit chrominance circuit.
The aberration circuit diagram of the colour television set of the M11 movement of the transformation of the way is seen Figure 11, and principle is connection/short circuit R-Y and B-Y colour difference signal circuit.
The RGB primary colours circuit diagram of the colour television set of the M11 movement of the transformation of the way is seen Figure 12, and principle is connection/short circuit R, G, three primary colour signals of B.
Experimental project is colored simulated television experiment, has 12 real time modelling TV experimental, and content is:
Line frequency reduces,
Line frequency raises,
Field frequency raises,
Field frequency reduces,
Disconnect brightness signal Y,
Disconnect aberration R-Y,
Disconnect aberration B-Y,
Disconnect carrier chrominance signal,
Disconnect primary colour signal R,
Disconnect primary colour signal G,
Disconnect primary colour signal B,
Disconnect an output.
System Software Requirement is: Windows 2000/2003 servers, windows media encode etc.
Experimental system installation file catalogue: TV experimental chamber remote tv experiment
Server end: after start enters system, open Windows media encode scrambler, select broadcast alive event, test.wme opens file.Can select the resolution (this experiment adopts 320 * 240) of different resolution, click Start encoding and enter the coding output state, window minimizes it and gets final product.
User side: system software should be Windows XP or above version, and 〉=800 * 600 resolution is used in the suggestion of display display mode, preferably uses 1024 * 768 resolution, broadband network.The IP address of login experiment website can enter that experiment is landed, the experimental project option carries out the TV tele-experimentation.The experiment management content sees Table lattice file.
Steering order is 13 groups of sexadecimal numbers, respectively corresponding every content choice: 12 experiment+recovery normal conditions are selected.
Server code is with Windows Media Encode coding.
Experimental terminal is delivered to controller 3 by experiment end server 1 interface by the RS232 connecting line according to the steering order that requirement of experiment sends, output signal to the colour television set 4 of the M11 movement of the transformation of the way again by controller 3, finish the selection of experimental project, terminal login experiment end server 1 by broadband internet, and operate every real time modelling TV experimental by the content of screen display, real-time television picture after the conversion is delivered to experiment end server by camera, be sent to operator's terminal behind the coding, generate an operator's record at last at experiment end server end, for teacher's reference.
Claims (9)
1, a kind of TV experimental remote teaching system based on broadband internet, it is characterized in that: by experiment end server, camera, the televisor of the controller and the transformation of the way is formed, experiment end server is interior with the function software that can finish requirement of experiment, controller is interior with communications control software, camera is installed in the experiment scene and is connected with experiment end server, controller links to each other by connecting bus with the televisor of the transformation of the way, experimental terminal is delivered to controller by experiment end server interface by connecting line according to the steering order that requirement of experiment sends, again by the colour television set of controller output signal to the M11 movement of the transformation of the way, finish the selection of experimental project, terminal login experiment end server by broadband internet, and operate every real time modelling TV experimental by the content of screen display, real-time television picture after the conversion is delivered to experiment end server by camera, be sent to operator's terminal behind the coding, generate an operator's record at last at experiment end server end.
2, the TV experimental remote teaching system based on broadband internet as claimed in claim 1 is characterized in that: experiment end server be PIV/2.8GHz, in save as 512M or computing machine above, that have USB and RS232 interface.
3, the TV experimental remote teaching system based on broadband internet as claimed in claim 1 is characterized in that: camera adopts has the CMOS/CCD camera of 1,300,000 pixels, and has USB interface output.。
4, the TV experimental remote teaching system based on broadband internet as claimed in claim 1 is characterized in that: experiment end server interface is connected by the RS232 connecting line with controller.
5, the TV experimental remote teaching system based on broadband internet as claimed in claim 1, it is characterized in that: the output control line that controller comprises single-chip microcomputer, multichannel electronic interlocking switch, manual button, LED light and has photoelectricity to isolate, single-chip microcomputer is interior with communications control software, single-chip microcomputer is connected with server by interface, the output of single-chip microcomputer is connected to multichannel electronic interlocking switch, the output control line of isolating through photoelectricity exports external-connected port to, and multichannel electronic interlocking switch is provided with manual button and LED light.
6, the TV experimental remote teaching system based on broadband internet as claimed in claim 1, it is characterized in that: the televisor of the transformation of the way is the colour television set of the M11 movement of the transformation of the way, its circuit is changed part: line-scan circuit, field-scanning circuit, brightness/field excitation circuit, chrominance channel, aberration circuit, RGB primary colours circuit is connected with controller by connecting bus.
7, the TV experimental remote teaching system based on broadband internet as claimed in claim 1, it is characterized in that: the real time modelling TV experimental is meant that having the TV station of broadcast is performing in a radio or TV programme the function of the program of analog/digital, because Network Transmission and software processes have the time-delay of certain hour.
8, the TV experimental remote teaching system based on broadband internet as claimed in claim 1 is characterized in that: steering order is some groups of sexadecimal numbers, respectively corresponding every content choice: experiment item number+recovery normal condition is selected.
9, the TV experimental remote teaching system based on broadband internet as claimed in claim 1 is characterized in that: operator's record is meant that the project with user's operation deposits in the form document, is associated with its student number.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100420732A CN100492439C (en) | 2006-01-19 | 2006-01-19 | TV experimental remote teaching system based on wideband interconnection network |
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| CNB2006100420732A CN100492439C (en) | 2006-01-19 | 2006-01-19 | TV experimental remote teaching system based on wideband interconnection network |
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| CN1831895A true CN1831895A (en) | 2006-09-13 |
| CN100492439C CN100492439C (en) | 2009-05-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903269A (en) * | 2012-09-12 | 2013-01-30 | 北京广达汽车维修设备有限公司 | Fully-informationized theory-practice combination teaching system |
| CN103139289A (en) * | 2013-01-21 | 2013-06-05 | 西安建艺设计制作策划有限公司 | Synchronous demonstration method and synchronous demonstration system |
| CN103871299A (en) * | 2014-01-23 | 2014-06-18 | 东南大学 | Multimedia network communication comprehensive experiment system |
| CN104269098A (en) * | 2014-10-13 | 2015-01-07 | 上海交通大学 | System for enhancing sense of immediacy of network experiment wire connection |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL131195A0 (en) * | 1999-08-01 | 2001-01-28 | Fourier Systems Ltd | Remote laboratory |
| CN1419201A (en) * | 2001-11-14 | 2003-05-21 | 上海电视大学 | Computer long distance remote control experiment system and experiment method thereof |
| CA2410748A1 (en) * | 2002-11-01 | 2004-05-01 | Dennis Perov | Audio-video-over-ip method, system and apparatus |
| CN100423500C (en) * | 2004-03-18 | 2008-10-01 | 上海交通大学 | Network interactive teaching experimental method based on attcking/defending and video pack playing tech |
-
2006
- 2006-01-19 CN CNB2006100420732A patent/CN100492439C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903269A (en) * | 2012-09-12 | 2013-01-30 | 北京广达汽车维修设备有限公司 | Fully-informationized theory-practice combination teaching system |
| CN102903269B (en) * | 2012-09-12 | 2015-04-15 | 北京广达汽车维修设备有限公司 | Fully-informationized theory-practice combination teaching system |
| CN103139289A (en) * | 2013-01-21 | 2013-06-05 | 西安建艺设计制作策划有限公司 | Synchronous demonstration method and synchronous demonstration system |
| CN103871299A (en) * | 2014-01-23 | 2014-06-18 | 东南大学 | Multimedia network communication comprehensive experiment system |
| CN103871299B (en) * | 2014-01-23 | 2015-11-25 | 东南大学 | A kind of multimedia network communication comprehensive experimental system |
| CN104269098A (en) * | 2014-10-13 | 2015-01-07 | 上海交通大学 | System for enhancing sense of immediacy of network experiment wire connection |
| CN104269098B (en) * | 2014-10-13 | 2016-05-25 | 上海交通大学 | Strengthen the system of network experiment line telepresenc |
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| CN100492439C (en) | 2009-05-27 |
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Granted publication date: 20090527 Termination date: 20120119 |