CN207541823U - A kind of communication theory experiment system - Google Patents
A kind of communication theory experiment system Download PDFInfo
- Publication number
- CN207541823U CN207541823U CN201721189061.2U CN201721189061U CN207541823U CN 207541823 U CN207541823 U CN 207541823U CN 201721189061 U CN201721189061 U CN 201721189061U CN 207541823 U CN207541823 U CN 207541823U
- Authority
- CN
- China
- Prior art keywords
- signal
- coding
- information source
- experimental system
- default terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The application discloses a kind of communication theory experiment system, the information source collector including being used to acquire original source；The original source is encoded, obtains the signal coding equipment of coded signal；For generating the channel simulator of noise；The coded signal and the noise are overlapped, obtain the signal adder of noisy acoustical signal；The signal transmitting apparatus being connected with the information source collector and signal adder；The original source of the signal transmitting apparatus transmission and the default terminal of the noisy acoustical signal are obtained, the software platform in the default terminal to be utilized to carry out corresponding signal processing.Compared with prior art, the experimental system in the utility model is more flexible, and hardware threshold reduces, and utilization rate improves, and is combined with signal processing, the visual software in computer, so as to build a kind of portable, modularization, dismountable communication theory experiment system.
Description
Technical field
The utility model is related to Principle of Communication field, more particularly to a kind of communication theory experiment system.
Background technology
《Principle of Communication》It is the foundation of modern communication technology theory as the basic specialized courses of electronic information-majors,
It is played a crucial role in the Curricula Systematic Structure of communication engineering profession.Communication theory experiment teaching is conducive to student's reason
Solution communication.The communication theory experiment of most domestic colleges and universities at present is usually carried out in the form of pure software emulation and experimental box,
Still it has no idea meet the needs of all experimental situations, true communication system, nothing cannot be established according to requirement of experiment substantially
Method carries out relevant analysis of experimental results.
At present《Principle of Communication》Experimental teaching is had using the specific shortcoming of scheme：Traditional laboratory apparatus case energy volume is huge
Greatly, heavy, price is not also economical, is designed in the form of experimental box, and flexibility is poor；Pure software emulates, and closing to reality is not believed
Number transmission, can not reproducing signal transmission real process.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of communication theory experiment systems.Its concrete scheme is as follows：
A kind of communication theory experiment system, including：
For acquiring the information source collector of original source；
It is connected with the information source collector, and the original source is encoded, the signal for obtaining coded signal is compiled
Code device；
For generating the channel simulator of noise；
It is connected with the channel simulator and signal coding equipment, and the coded signal and the noise is folded
Add, obtain the signal adder of noisy acoustical signal；
The signal transmitting apparatus being connected with the information source collector and signal adder；
It is connected with the signal transmitting apparatus, and obtains the original source that the signal transmitting apparatus sends and described
The default terminal of noisy acoustical signal, to carry out corresponding signal processing using the software platform in the default terminal.
Preferably, the signal coding equipment, including：
It is connected with the information source collector, and message sink coding is carried out to the original source, obtains signal after message sink coding
Source encoder；
It is connected with the source encoder, and channel coding is carried out to signal after the message sink coding, obtains the coding
The channel encoder of signal afterwards.
Preferably, the default terminal further includes：
It receives the software platform and carries out the signal after corresponding signal processing, and show the first display of the signal waveform
Screen.
Preferably, the information source collector includes button collector.
Preferably, the information source collector includes audio collection device.
Preferably, the default terminal further includes：
The signal of the audio mode after the corresponding signal processing of the software platform progress is received, and plays corresponding audio
Player.
Preferably, the information source collector includes image acquisition device.
Preferably, the default terminal further includes：
The signal of the image model after the corresponding signal processing of the software platform progress is received, and shows correspondence image
Second display screen.
Preferably, the signal coding equipment further includes the hardware encoding external tapping for connecting external coding.
Preferably, the channel simulator includes the channel simulator being made of three operational amplifiers.
A kind of communication theory experiment system that the utility model is announced, the information source acquisition including being used to acquire original source
Device；The original source is encoded, obtains the signal coding equipment of coded signal；For generating the channel simulation of noise
Device；The coded signal and the noise are overlapped, obtain the signal adder of noisy acoustical signal；It is adopted with the information source
The signal transmitting apparatus that storage is connected with signal adder；Obtain the original source and the institute that the signal transmitting apparatus is sent
The default terminal of noisy acoustical signal is stated, to carry out corresponding signal processing using the software platform in the default terminal.With showing
There is technology to compare, the experimental system in the utility model is more flexible, and hardware threshold reduces, and utilization rate improves, and in computer
Signal processing, visual software combine, so as to build a kind of portable, modularization, dismountable communication theory experiment system.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structure diagram of communication theory experiment system in the utility model embodiment；
Fig. 2 is a kind of distribution map in kind of communication theory experiment system in the utility model embodiment；
Fig. 3 is a kind of external addressable port of source encoder in the utility model embodiment；
Fig. 4 is the connection diagram of a kind of channel transmission apparatus and channel simulator in the utility model embodiment.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
The utility model embodiment discloses a kind of communication theory experiment system, and referring to shown in Fig. 1 or Fig. 2, Fig. 1 is this reality
The structure diagram of check system, Fig. 2 are a kind of distribution map in kind of this pilot system, including：
For acquiring the information source collector 1 of original source；
Wherein, information source collector 1 can include image acquisition device 11 and/or audio collection device 12 and/or button acquisition
Device 13.
It is connected with the information source collector 1, and the original source is encoded, the signal for obtaining coded signal is compiled
Code device 2；
Further, the signal coding equipment 2, can include：
It is connected with the information source collector, and message sink coding is carried out to the original source, obtains signal after message sink coding
Source encoder；
It is connected with the source encoder, and channel coding is carried out to signal after the message sink coding, obtains the coding
The channel encoder of signal afterwards.
Further, the hardware encoding external tapping 21 for connecting external coding can also be included, user can be according to outer
Coding pin interface specification and definition design coding circuit are connect, user is set as hardware encoding mould in computer software platform during use
Formula simultaneously connects related hardware module.Fig. 3 is a kind of external addressable port, from left to right respectively VCC (power supply), GND
(), CLK (synchronised clock), IN (original source), OUT (data after coding).It should be pointed out that the number mark in Fig. 3
Note represents length, and unit is millimeter.
For generating the channel simulator 3 of noise；
It is understood that channel simulator 3 is adjustable Intensity Design, by channel transmission apparatus or signal adder control
System.The channel simulator is simple channel simulator, and the M sequence that software algorithm generation is scaled using three operational amplifiers is believed
Number, adder is recycled to export result after the noise of three channels is added.Channel simulator is 8 grades of adjustable channel simulations of intensity
Device can generate the white Gaussian noise of 8 intensity.Shown in Figure 4, figure includes a kind of channel controlled by channel transmission apparatus
Simulator, element U2 are channel simulator, and wherein S is Enable Pin, and high level is effective；A2, A1, A0 are noise intensity control terminal,
The control signal that input binary system is 000 (noise is most weak) to 111 (noise is most strong) is received, noise inputs end is OUT.
It is connected with the channel simulator and signal coding equipment, and the coded signal and the noise is folded
Add, obtain the signal adder 4 of noisy acoustical signal；
The signal transmitting apparatus 5 being connected with the information source collector and signal adder；
It is understood that the mode of segment transmissions may be used in the transmission of signal transmitting apparatus, signal transmitting apparatus can
To be connected directly with channel simulator, so as to the noise size of control channel analog module, open and close etc..As shown in figure 4,
U1 is signal transmitting apparatus, and U2 is channel simulator.Wherein the four of U1 output terminals Y3, Y2, Y1, Y0 are controlled for channel simulator
Signal, Y3 are connected with the Enable Pin of channel simulator, and output terminal Y2, Y1, Y0 are connected with channel simulator input terminal A2, A1, A0,
Control noise intensity.When sending source signal, Y3 outputs low level, channel simulator Enable Pin are set to 0, not output noise；When
When sending the signal after coding, Y3 outputs high level, channel simulator Enable Pin put 1, output noise.Each data segment includes original
Beginning information source and noisy acoustical signal two parts, using the ACII codes of Esc as interval between each data segment, if signal includes in itself
Esc, then continuously transmit two Esc, and computer software platform will be identified.
Certainly, the transmission of signal transmitting apparatus can also use other methods, such as binary channels connection mode or single channel
When multiplexing method, be divided into frequency division multiplexing and time division multiplexing, segment transmissions above are substantially time division multiplexings.Wherein, it is double
The connection mode of channel needs two wired connection channels, and design cost is higher；Frequency division multiplexing is larger to the expense of system；Although
Time division multiplexing can be more complicated on Software for Design, and hardware cost is low, small to system resource occupancy, although less efficient,
But since speed is not made excessive demands in undergraduate stage experiment, it is entirely capable of the experiment of the undergraduate stage met.
It is connected with the signal transmitting apparatus, and obtains the original source that the signal transmitting apparatus sends and described
The default terminal 6 of noisy acoustical signal, to carry out corresponding signal processing using the software platform in the default terminal.
Further, the default terminal 6 can also include：
It receives the software platform and carries out the signal after corresponding signal processing, and show the first display of the signal waveform
Screen.
The signal of the audio mode after the corresponding signal processing of the software platform progress is received, and plays corresponding audio
Player.
The signal of the image model after the corresponding signal processing of the software platform progress is received, and shows correspondence image
Second display screen.
It is understood that the first display screen mentioned above and second display screen can be one piece of display screen, it is existing aobvious
Show the function of signal waveform, can also show the correspondence image of signal.
A kind of communication theory experiment system that the present embodiment is announced, the information source collector including being used to acquire original source；
The original source is encoded, obtains the signal coding equipment of coded signal；For generating the channel simulator of noise；
The coded signal and the noise are overlapped, obtain the signal adder of noisy acoustical signal；It is acquired with the information source
The signal transmitting apparatus that device is connected with signal adder；Obtain the original source that the signal transmitting apparatus sends and described
The default terminal of noisy acoustical signal, to carry out corresponding signal processing using the software platform in the default terminal.With it is existing
Technology is compared, and the experimental system in the utility model is more flexible, and hardware threshold reduces, and utilization rate improves, and in computer
Signal processing, visual software combine, so as to build a kind of portable, modularization, dismountable communication theory experiment system.
The foregoing description of the disclosed embodiments enables those skilled in the art to realize or using the utility model.
A variety of modifications of these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this practicality is new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent most wide range.
Claims (10)
1. a kind of communication theory experiment system, which is characterized in that including：
For acquiring the information source collector of original source；
It is connected with the information source collector, and the original source is encoded, obtains the Signal coding dress of coded signal
It puts；
For generating the channel simulator of noise；
It is connected with the channel simulator and signal coding equipment, and the coded signal and the noise is overlapped,
Obtain the signal adder of noisy acoustical signal；
The signal transmitting apparatus being connected with the information source collector and signal adder；
It is connected with the signal transmitting apparatus, and obtains the original source that the signal transmitting apparatus sends and described noisy
The default terminal of acoustical signal, to carry out corresponding signal processing using the software platform in the default terminal.
2. experimental system according to claim 1, which is characterized in that
The signal coding equipment, including：
It is connected with the information source collector, and message sink coding is carried out to the original source, obtains the letter of signal after message sink coding
Source encoder；
It is connected with the source encoder, and channel coding is carried out to signal after the message sink coding, believes after obtaining the coding
Number channel encoder.
3. experimental system according to claim 1, which is characterized in that the default terminal further includes：
It receives the software platform and carries out the signal after corresponding signal processing, and show the first display screen of the signal waveform.
4. experimental system according to claim 1, which is characterized in that
The information source collector includes button collector.
5. experimental system according to claim 1, which is characterized in that
The information source collector includes audio collection device.
6. experimental system according to claim 5, which is characterized in that the default terminal further includes：
The signal of the audio mode after the corresponding signal processing of the software platform progress is received, and plays the broadcasting of corresponding audio
Device.
7. experimental system according to claim 1, which is characterized in that
The information source collector includes image acquisition device.
8. experimental system according to claim 7, which is characterized in that the default terminal further includes：
The signal of the image model after the corresponding signal processing of the software platform progress is received, and shows the second of correspondence image
Display screen.
9. according to claim 1 to 8 any one of them experimental system, which is characterized in that
The signal coding equipment further includes the hardware encoding external tapping for connecting external coding.
10. experimental system according to claim 9, which is characterized in that the channel simulator includes being put by three operations
The channel simulator of big device composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721189061.2U CN207541823U (en) | 2017-09-14 | 2017-09-14 | A kind of communication theory experiment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721189061.2U CN207541823U (en) | 2017-09-14 | 2017-09-14 | A kind of communication theory experiment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207541823U true CN207541823U (en) | 2018-06-26 |
Family
ID=62608057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721189061.2U Expired - Fee Related CN207541823U (en) | 2017-09-14 | 2017-09-14 | A kind of communication theory experiment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207541823U (en) |
-
2017
- 2017-09-14 CN CN201721189061.2U patent/CN207541823U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106200983B (en) | A kind of system of combination virtual reality and BIM realization virtual reality scenario architectural design | |
| CN105654800A (en) | Simulation teaching system based on immersive VR (virtual reality) technology | |
| CN106781755A (en) | A kind of tutoring system and method based on virtual reality | |
| CN105608953A (en) | Intelligent electronic piano teaching system | |
| CN110853614A (en) | Virtual object mouth shape driving method and device and terminal equipment | |
| Duan | Design of online volleyball remote teaching system based on AR technology | |
| CN111028579A (en) | Vision teaching system based on VR reality | |
| CN103474082A (en) | Multi-microphone vocal accompaniment marking system and method thereof | |
| CN201251863Y (en) | Network musical instrument education system | |
| CN204596216U (en) | A kind of network multi-broadcast to clone | |
| CN109637232A (en) | A kind of music teaching mode of VR technology | |
| CN104851327A (en) | Politics teaching system | |
| CN207541823U (en) | A kind of communication theory experiment system | |
| CN206058028U (en) | DDS signal generator based on FPGA | |
| CN205943152U (en) | Multimedia interactive teaching system | |
| CN206162915U (en) | Computer teaching of university platform | |
| CN202632604U (en) | Signal processing comprehensive experiment platform | |
| CN203102642U (en) | Cloud electronic school bag | |
| CN108766156A (en) | A kind of portable mould electricity experiment teaching system based on ZIGBEE communications | |
| CN107564382A (en) | A kind of communication theory experiment method, system and its collocation method | |
| CN204242422U (en) | A kind of Financial Management Teaching simulation sand table | |
| CN210200039U (en) | Holographic 3D teaching system of power equipment | |
| CN107515587A (en) | System, method, apparatus, equipment and the storage medium of man-machine interactive operation emulation | |
| Sun et al. | Computational intelligence and applications of virtual reality technology in martial arts teaching system | |
| CN206249287U (en) | Pcb board and cloud-in-the-box main frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180626 Termination date: 20190914 |