CN205864599U - A kind of rural households economic education television transmission system - Google Patents
A kind of rural households economic education television transmission system Download PDFInfo
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- CN205864599U CN205864599U CN201620873587.1U CN201620873587U CN205864599U CN 205864599 U CN205864599 U CN 205864599U CN 201620873587 U CN201620873587 U CN 201620873587U CN 205864599 U CN205864599 U CN 205864599U
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Abstract
This utility model relates to a kind of rural households economic education television transmission system, including signal source, front end system, trunk transmission system and user allocation system, signal source includes DVB, microwave receiving station, frequency channel transformer and video playback apparatus, front end system includes modem, frequency channel amplifier, FM signal generator, RF mixing and radio frequency amplifier, modem includes first, second, and third modem, and frequency channel amplifier includes the first and second frequency channel amplifiers；Rural households of the present utility model economy cultivation educational system achieves rural households' economic channel and receives multiple, and transmission is stable, facilitates rural households' economic education so that rural area people are home-confined can receive informative rural households economic education knowledge.
Description
Technical field
This utility model relates to a kind of rural households economic education television transmission system.
Background technology
Along with expanding economy, rural households' economy is more and more important, in rural area, the education of rural households' economy
Form is varied, and is exactly one of which by television transmission, and the quality of television transmission quality directly influences rural households
Education and study, television transmission system is to be put together by multi-channel TV signals, after it is carried out necessary process, utilizes cable
Unification is transmitted distributing television transmission system, but, the television transmission quality in existing rural households is relatively poor, receives
Rural households' economic channel is few, transmission instability so that television transmission have impact on the education of rural households' economy.
Utility model content
This utility model is in order to solve problem of the prior art, it is provided that one is transferred stable, facilitates rural households' economy
Education so that the home-confined rural households' economy that can receive informative rural households economic education knowledge of rural area people
Educational TV transmission system.
Concrete technical scheme of the present utility model is as follows: a kind of rural households economic education television transmission system, including letter
Number source, front end system, trunk transmission system and user allocation system, described signal source include DVB, microwave receiving station,
Frequency channel transformer and video playback apparatus, described front end system includes that modem, frequency channel amplifier, FM signal occur
Device, RF mixing and radio frequency amplifier, described modem includes the first modem, second modem and
Three modems, described frequency channel amplifier includes the first frequency channel amplifier and the second frequency channel amplifier, described primary transmission system
System include trunk amplifier, trunk bridge amplifier and circuit extension amplifier, described user allocation system include allotter and
Splitter, described DVB connects the first modem, and described first modem connects RF mixing, described
Microwave receiving station connects second modem, and described second modem connects the first frequency channel amplifier, described first frequency
Road amplifier connects RF mixing, and described frequency channel transformer connects the second frequency channel amplifier, and described second frequency channel amplifier is even
Connecing RF mixing, described video playback apparatus connects the 3rd modem, and described 3rd modem connects radio frequency to be mixed
Clutch, described modulation signal generator connects RF mixing, and described RF mixing connects radio frequency amplifier, and described radio frequency is put
Big device connects trunk amplifier, and described trunk amplifier connects trunk bridge amplifier, described trunk bridge amplifier connecting line
Road extension amplifier, described trunk bridge amplifier is also connected with allotter, and described allotter connects splitter, and described splitter is even
Link amplifier, described line amplifier connects TV.
The following is affiliate program of the present utility model.
Preferably, described video playback apparatus includes videocorder, video disc player, video camera.
Technique effect of the present utility model: a kind of rural households of the present utility model economic education television transmission system is logical
Cross the setting of signal source so that the reception mode variation of signal；By the setting of front end system so that the transmission of signal source is steady
Fixed, signal prepares and clear, by trunk transmission system and the setting of user allocation system so that user receives signal stabilization,
Whole system transmission is stable, facilitates rural households' economic education so that rural area people are home-confined can receive informative
Rural households' economic education knowledge.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of rural households economic education television transmission system of this utility model the present embodiment.
In figure: signal source 1, DVB 11, microwave receiving station 12, frequency channel transformer 13, video playback apparatus 14, front
End system 2, modem 21, the first modem 211, second modem 212, the 3rd modem 213, frequently
Road amplifier 22, the first frequency channel amplifier 221, the second frequency channel amplifier 222, FM signal generator 23, RF mixing 24,
Radio frequency amplifier 25, trunk transmission system 3, trunk amplifier 31, trunk bridge amplifier 32, circuit extension amplifier 33, use
Family distribution system 4, allotter 41, splitter 42, line amplifier 43, TV 44.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further.
As it is shown in figure 1, a kind of rural households economic education television transmission system of the present embodiment, including signal source 1, front end
System 2, trunk transmission system 3 and user allocation system 4, described signal source 1 includes DVB 11, microwave receiving station 12,
Frequency channel transformer 13 and video playback apparatus 14, signal source can determine the satellite television letter of reception according to the scale of rural tv
Number and the microwave television signal relayed, and cable TV station need to receive the intensity of signal.Described front end system 2 includes modulatedemodulate
Adjust device 21, frequency channel amplifier 22, FM signal generator 23, RF mixing 24, radio frequency amplifier 25, described modem
21 include the first modem 211, second modem 212 and the 3rd modem 213, described frequency channel amplifier 22
Including the first frequency channel amplifier 221 and the second frequency channel amplifier 222, its effect is to separate signal, amplify, modulate, become
Frequently, mixed processing, also each signal level is adjusted control, to interference signal suppress or filter, with obtain rural area use
The television image of family satisfaction and sound.Described trunk transmission system 3 includes trunk amplifier 31, trunk bridge amplifier 32, line
Road extension amplifier 3, the TV signal of the output of front end is balanced and is sent to user without distortion and distributes network by it.Described use
Family distribution system 4 includes allotter 41, splitter 42, line amplifier 43 and TV 44, user allocation system by allotter, point
Prop and the service entrance cable being connected with each other are formed, and for equilibrium assignmen TV signal to user, are television transmission systems
The terminal of system.Described DVB 11 connects the first modem 211, and described first modem 211 connects radio frequency
Blender 24, described microwave receiving station 12 connects second modem 212, and described second modem 212 connects first
Frequency channel amplifier 221, described first frequency channel amplifier 221 connects RF mixing 24, and described frequency channel transformer 13 connects second
Frequency channel amplifier 222, described second frequency channel amplifier 222 connects RF mixing 24, and described video playback apparatus 14 connects
Three modems 213, described video playback apparatus 14 includes that videocorder, video disc player, video camera, so use have various
Changing, described modulation signal generator 23 connects RF mixing 24, by RF mixing by different frequency above for two sets
Radiofrequency signal mix formed one have a lot of social connections band radiofrequency signal achieve multichannel, described RF mixing 24 connects radio frequency
Amplifier 25, is amplified by radio frequency amplifier, and described radio frequency amplifier 25 connects trunk amplifier 31, by power step-down not
Can meet the signal amplification covered when requiring, described trunk amplifier 31 connects trunk bridge amplifier 32, plays signal stabilization
Effect, described trunk bridge amplifier 31 connection line extension amplifier 32, described trunk bridge amplifier 32 is also connected with point
Orchestration 41, is divided into the equal signal in a few road by allotter by a road signal averaging and exports, and described allotter 41 connects splitter
42, described splitter 42 connection line amplifier 43, described line amplifier 43 connects TV 44, so arranges, can in family
To receive rural households' economic education.
A kind of rural households economic education television transmission system of the present embodiment, by audio frequency, video or satellite etc. regarding
Keep pouring in each family being multicast to rural area, connect frequency channel amplifier by modem and be used for amplifying signal, then by penetrating
Frequently after signal is mixed by blender, transferring to radio frequency amplifier again to amplify, being connected to trunk amplifier is at power step-down
The signal amplification covered when requiring can not be met, reconnect trunk bridge amplifier, be wherein connected in trunk amplifier delivery outlet
Splitter, separates a road or several signals supply other main line or branch line, and can be by circuit extension amplifier for extended line
Road is amplified, and for compensating insertion loss and the cable loss of service main top set device, and trunk amplifier connects allotter, passes through
Allotter distribution signal, by splitter connection line amplifier, reconnects TV, it is simple to rural households receive rural households' warp
Ji educates multiple channels so that cultivates and educates conveniently.
A kind of rural households of the present utility model economic education television transmission system, 1, by the setting of signal source so that
The reception mode variation of signal；2, by the setting of front end system so that the transmission of signal source is stable, signal prepares and clear
Chu, 3, setting by trunk transmission system and user allocation system so that user receives signal stabilization, 4, whole system, pass
Defeated stable so that rural area people are home-confined can receive informative rural households economic education knowledge.It may be noted that
It is that above-mentioned preferred embodiment only illustrates technology of the present utility model design and feature, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All according to this utility model spirit made equivalence change or modify, all should contain protection domain of the present utility model it
In.
Claims (2)
1. rural households' economic education television transmission system, including signal source, front end system, trunk transmission system and user
Distribution system, it is characterised in that: described signal source includes DVB, microwave receiving station, frequency channel transformer and video playback
Equipment, described front end system includes that modem, frequency channel amplifier, FM signal generator, RF mixing and radio frequency are put
Big device, described modem includes the first modem, second modem and the 3rd modem, described channel
Amplifier includes the first frequency channel amplifier and the second frequency channel amplifier, and described trunk transmission system includes trunk amplifier, main line
Bridging amplifier and circuit extension amplifier, described user allocation system includes allotter and splitter, described DVB
Connecting the first modem, described first modem connects RF mixing, and described microwave receiving station connects the second tune
Modulator-demodulator, described second modem connects the first frequency channel amplifier, and described first frequency channel amplifier connects radio frequency mixing
Device, described frequency channel transformer connects the second frequency channel amplifier, and described second frequency channel amplifier connects RF mixing, described video
Playback equipment connects the 3rd modem, and described 3rd modem connects RF mixing, and described modulated signal occurs
Device connects RF mixing, and described RF mixing connects radio frequency amplifier, and described radio frequency amplifier connects trunk amplifier, institute
State trunk amplifier and connect trunk bridge amplifier, described trunk bridge amplifier connection line extension amplifier, described main line
Bridging amplifier is also connected with allotter, and described allotter connects splitter, described splitter connection line amplifier, described circuit
Amplifier connects TV.
2. a kind of rural households as claimed in claim 1 economic education television transmission system, it is characterised in that: described video is broadcast
The equipment of putting includes videocorder, video disc player, video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620873587.1U CN205864599U (en) | 2016-08-13 | 2016-08-13 | A kind of rural households economic education television transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620873587.1U CN205864599U (en) | 2016-08-13 | 2016-08-13 | A kind of rural households economic education television transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205864599U true CN205864599U (en) | 2017-01-04 |
Family
ID=57594042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620873587.1U Expired - Fee Related CN205864599U (en) | 2016-08-13 | 2016-08-13 | A kind of rural households economic education television transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205864599U (en) |
-
2016
- 2016-08-13 CN CN201620873587.1U patent/CN205864599U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20170104 Termination date: 20170813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |