CN205829870U - A kind of simulation building conversational system - Google Patents
A kind of simulation building conversational system Download PDFInfo
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- CN205829870U CN205829870U CN201620659817.4U CN201620659817U CN205829870U CN 205829870 U CN205829870 U CN 205829870U CN 201620659817 U CN201620659817 U CN 201620659817U CN 205829870 U CN205829870 U CN 205829870U
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Abstract
The utility model discloses a kind of simulation building conversational system, including doorway machine, networking device, data distributor, indoor unit and management center machine, doorway machine includes that photographic head, indoor unit and management center machine include display screen respectively；The analog video signal input of the outfan order end slip parallel circuit of photographic head, the input of the difference video signal output termination networking device of single-ended transfer difference circuit；The difference video signal outfan of networking device connects management center machine difference respectively and turns the input of single-end circuit and the input of data distributor, and management center machine difference turns the outfan of single-end circuit and connects the display screen of management center machine；The difference video signal output termination indoor unit difference of data distributor turns the input of single-end circuit, and indoor unit difference turns the display screen of the output termination indoor unit of single-end circuit.This utility model solves the problem of simulation building conversational system twisted-pair feeder long range propagation signal attenuation, significantly reduces transmission wire rod cost.
Description
[technical field]
This utility model relates to building conversational system, particularly relates to a kind of simulation building conversational system.
[background technology]
In simulation intercom system, engineering wiring at present uses shielding line to add coaxial cable, general shielding line transmission audio frequency letter
Number and communication data signal, use coaxial cable directly transmit CVBS video signal.Coaxial cable have technically shielding good,
The features such as impedance operator is good, are not required to any signal compensation recovery technology transmission range (black up to 400 meters (colored) and 1000 meters
In vain)；And 5 class lines are as unshielded twisted pair, because of shield effectiveness and impedance operator all far below coaxial cable, if with 5 class lines
Directly transmission CVBS video signal, its effect within line length 20 meters is it is believed that suitable with coaxial cable, when line length is about
20-50 rice video signal starts to be deteriorated, and naked eyes can feel that image definition declines, when line length then there will be image for more than 50 meters
Fuzzy ghost phenomena, so CVBS video signal is not suitable for directly transmitting at 5 class lines.Engineering wiring in simulation intercom system at present
In, in short-distance transmission, a lot of building producers use 5 class line transmission, and use 5 class line length Distance Transmission also in the exploratory stage.
Traditional simulation intercom system uses shielding line to add coaxial cable distance networking wire laying mode, there is wiring numerous
Trivial, wire rod cost is high, installation and debugging and maintenance cost increases and system is difficult to compatibility and expansion.And use 5 class lines to transmit because of line
Cable impedance is big, line capacitance big, signal frequency selective attenuation, and the high frequency cost in video signal is decayed more than low-frequency component
Greatly, during long range propagation, signal medium-high frequency yield loss is serious, is not suitable for using 5 class line length Distance Transmission.
[summary of the invention]
The technical problems to be solved in the utility model is to provide that a kind of long range propagation signal attenuation is little, wiring is simple, line
The simulation building conversational system of material low cost.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is, a kind of simulation building conversational system,
Including doorway machine, networking device, data distributor, indoor unit and management center machine, doorway machine include photographic head, voicefrequency circuit and
Data transmission circuit, indoor unit and management center machine include display screen, voicefrequency circuit and data transmission circuit respectively；Doorway machine
And between networking device, between networking device and data distributor, between data distributor and indoor unit, network device and administrative center
Twisted pair line connection is passed through respectively between machine；Doorway machine includes video single-ended transfer difference circuit, the VT of photographic head
The single-ended analog video signal input terminal of order end slip parallel circuit, the difference video signal output termination of single-ended transfer difference circuit
The difference video signal input of networking device；Indoor unit and management center machine include that difference turns single-end circuit respectively, device of networking
Difference video signal outfan connect management center machine difference respectively and turn difference video signal input and the data of single-end circuit
The difference video signal input of allotter, management center machine difference turns the single-ended analog VT of single-end circuit and connects
The display screen of management center machine；The difference video signal output termination indoor unit difference of data distributor turns the difference of single-end circuit
Sub video signal input, indoor unit difference turns the single-ended analog VT of single-end circuit and connects the aobvious of indoor unit
Display screen.
Above-described simulation building conversational system, between doorway machine and networking device, between networking device and data distributor,
Between data distributor and indoor unit, between networking device and management center machine, pass through twisted pair line connection respectively；
Above-described simulation building conversational system, the audio signal output end of doorway machine voicefrequency circuit connects the difference of networking device
Multi-voice frequency signal input part；The difference audio signal output end of networking device connects the difference audio frequency of management center machine voicefrequency circuit respectively
The difference audio signal input end of signal input part and data distributor, the difference audio signal output end of data distributor connects room
The difference audio signal input end of interior extension set voicefrequency circuit.
Above-described simulation building conversational system, the data signal output of doorway machine data transmission circuit connects networking device
Differential data signals input；The differential data signals outfan of networking device connects management center machine data transmission circuit respectively
The differential data signals input of differential data signals input and data distributor, the differential data signals of data distributor is defeated
Go out to terminate the differential data signals input of indoor unit data transmission circuit.
Above-described simulation building conversational system, described twisted-pair feeder is Category-5 twisted pair.
Simulation building conversational system of the present utility model is suitable for unshielded twisted pair long range propagation video signal, solves
There is the problem of signal attenuation in simulation intercom system Double-strand transmission, transmission wire rod cost and debugging cost are greatly reduced, with
Time more enhance anti-interference and the stability of whole system.
[accompanying drawing explanation]
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the theory diagram of this utility model embodiment simulation building conversational system.
Fig. 2 is that the video signal of this utility model embodiment simulation building conversational system converts schematic diagram.
Fig. 3 is the schematic diagram of this utility model embodiment simulation building conversational system video single-ended transfer difference circuit.
Fig. 4 is the schematic diagram that this utility model embodiment simulation building conversational system video difference turns single-end circuit.
[detailed description of the invention]
This utility model embodiment simulation structure of building conversational system and principle as shown in Figures 1 to 4, including doorway
Machine, networking device, data distributor, indoor unit and management center machine.3 groups of differential signals of system realize data by category-5 cable
And audio video transmission.
Doorway machine includes photographic head, voicefrequency circuit, video single-ended transfer difference circuit and data transmission circuit, indoor unit and
Management center machine includes that display screen, voicefrequency circuit, difference turn single-end circuit and data transmission circuit respectively.
Between doorway machine and networking device, between networking device and data distributor, between data distributor and indoor unit, join
It is connected by the Category-5 twisted pair of unmasked respectively between wire stitcher with management center machine.
Wherein, the single-ended analog video signal of the VT order end slip parallel circuit of doorway machine photographic head is defeated
Enter end, the difference video signal input of the difference video signal output termination networking device of single-ended transfer difference circuit.Networking device
Difference video signal outfan connects management center machine difference respectively and turns the difference video signal input of single-end circuit and data are divided
The difference video signal input of orchestration, management center machine difference turns the single-ended analog VT adapter of single-end circuit
The display screen of reason center machine.The difference video signal output termination indoor unit difference of data distributor turns the difference of single-end circuit
Video signal input terminal, indoor unit difference turns the single-ended analog VT of single-end circuit and connects the display of indoor unit
Screen.
The audio signal output end of doorway machine voicefrequency circuit connects the difference audio signal input end of networking device.The difference of networking device
Multi-voice frequency signal output part connects difference audio signal input end and the difference of data distributor of management center machine voicefrequency circuit respectively
Multi-voice frequency signal input part, the difference audio signal output end of data distributor connects the difference audio frequency letter of indoor unit voicefrequency circuit
Number input.
The data signal output of doorway machine data transmission circuit connects the differential data signals input of networking device.Networking device
Differential data signals outfan connect the differential data signals input of management center machine data transmission circuit respectively and data are divided
The differential data signals input of orchestration, the differential data signals output termination indoor unit data transmission circuit of data distributor
Differential data signals input.
In this utility model above example, single-ended analog video signal is converted into one group of differential video letter by doorway machine end
Number, allotter and indoor unit are passed to through networking device in a road, and difference video signal is converted into single-ended analog at indoor unit end and regards
Frequently signal.Management center machine is passed to through networking device in another road, and difference video signal is equal through adaptive video at management center machine end
It is converted into single-ended analog video signal after the Gain Automatic compensation of weighing apparatus.Video conversion uses CLC2000.Differential data and audio frequency letter
Number need not change, directly be transmitted by category-5 cable.
As in figure 2 it is shown, single-ended analog video signal is converted into one group of difference video signal by doorway machine end, indoor unit and
The difference video signal of reception is converted into single-ended analog video signal by management center machine end.The single-ended mould of camera video VIDEO
Intending video signal, be converted into one group of difference video signal through video single-ended transfer difference circuit, allotter is passed to through networking device in a road
And indoor unit, difference video signal indoor unit end through through adaptive video equalizer gain automatically compensate be converted into single-ended
Analog video signal, is shown image by display screen.Management center machine is passed to through networking device in another road, and difference video signal is in management
Center machine end automatically compensates through adaptive video equalizer gain and is converted into single-ended analog video signal.Differential data and audio frequency letter
Number need not change, directly be transmitted by Category-5 twisted pair.
Video single-ended transfer difference circuit shown in Fig. 3, uses chip CLC2000, is regarded by single-ended analog for doorway machine end
Frequently signal is converted into difference video signal.
Video difference shown in Fig. 4 turns single-end circuit, uses chip I SL59605 adaptive video equalizer, maximum transmitted
Distance reaches 1600m, is single-ended analog video signal for indoor unit and management center machine end by difference video signal.
Above example of the present invention, by the circuit of applicable category 5 twisted pair long range propagation video signal, has unified system
Wiring, networking main line and each indoor unit branch line all use 5 class netting twines of unmasked as transmission wire rod, be easier to install and
Safeguarding, greatly reducing cost of installation and maintenance, the space that whole system wiring takies also is greatly reduced, and makes simulation video intercom
The cost performance of system reaches unprecedented height.The transmission range simultaneously solving conventional analog systems is short, capacity of resisting disturbance
Difference, system wiring is loaded down with trivial details, wire rod cost high and debugs numerous and diverse and that maintenance cost is high problem.Wire rod is opened by the project that decreases
Sell, reduce the difficulty of construction, reduce the conventional electric power system Hz noise to audio frequency and video, effectively inhibit Big Residential District
Video band common during networking, audio-frequency noise.Enhance anti-interference and the stability of whole system simultaneously.
Claims (5)
1. a simulation building conversational system, including doorway machine, networking device, data distributor, indoor unit and management center machine,
Doorway machine includes that photographic head, voicefrequency circuit and data transmission circuit, indoor unit and management center machine include display screen, sound respectively
Frequency circuit and data transmission circuit, it is characterised in that doorway machine includes video single-ended transfer difference circuit, the video signal of photographic head
The single-ended analog video signal input terminal of outfan order end slip parallel circuit, the difference video signal of single-ended transfer difference circuit is defeated
Go out the difference video signal input of termination networking device；Indoor unit and management center machine include that difference turns single-end circuit respectively,
The difference video signal outfan of networking device connects management center machine difference respectively and turns the difference video signal input of single-end circuit
With the difference video signal input of data distributor, the single-ended analog video signal that management center machine difference turns single-end circuit is defeated
Go out to terminate the display screen of management center machine；The difference video signal output termination indoor unit difference of data distributor turns single-ended electricity
The difference video signal input on road, indoor unit difference turns the single-ended analog VT of single-end circuit and connects indoor point
The display screen of machine.
Simulation building conversational system the most according to claim 1, it is characterised in that between doorway machine and networking device, network
Respectively by double between device and data distributor, between data distributor and indoor unit, between networking device and management center machine
Twisted wire connects.
Simulation building conversational system the most according to claim 2, it is characterised in that the audio signal of doorway machine voicefrequency circuit
The difference audio signal input end of output termination networking device；The difference audio signal output end of networking device connects management center machine respectively
The difference audio signal input end of voicefrequency circuit and the difference audio signal input end of data distributor, the difference of data distributor
Audio signal output end connects the difference audio signal input end of indoor unit voicefrequency circuit.
Simulation building conversational system the most according to claim 2, it is characterised in that the data of doorway machine data transmission circuit
Signal output part connects the differential data signals input of networking device；In the differential data signals outfan adapter reason respectively of networking device
The differential data signals input of scheming data transmission circuit and the differential data signals input of data distributor, data are distributed
The differential data signals input of the differential data signals output termination indoor unit data transmission circuit of device.
Simulation building conversational system the most according to claim 2, it is characterised in that described twisted-pair feeder is five class multiple twins
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620659817.4U CN205829870U (en) | 2016-06-29 | 2016-06-29 | A kind of simulation building conversational system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620659817.4U CN205829870U (en) | 2016-06-29 | 2016-06-29 | A kind of simulation building conversational system |
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| Publication Number | Publication Date |
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| CN205829870U true CN205829870U (en) | 2016-12-21 |
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ID=57566251
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620659817.4U Expired - Fee Related CN205829870U (en) | 2016-06-29 | 2016-06-29 | A kind of simulation building conversational system |
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| Country | Link |
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| CN (1) | CN205829870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112445745A (en) * | 2021-01-29 | 2021-03-05 | 武汉精测电子集团股份有限公司 | Device and method for long-distance signal transmission |
| JP2021170846A (en) * | 2017-11-16 | 2021-10-28 | パナソニックＩｐマネジメント株式会社 | Turnout and intercom system |
-
2016
- 2016-06-29 CN CN201620659817.4U patent/CN205829870U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021170846A (en) * | 2017-11-16 | 2021-10-28 | パナソニックＩｐマネジメント株式会社 | Turnout and intercom system |
| CN112445745A (en) * | 2021-01-29 | 2021-03-05 | 武汉精测电子集团股份有限公司 | Device and method for long-distance signal transmission |
| CN112445745B (en) * | 2021-01-29 | 2021-05-14 | 武汉精测电子集团股份有限公司 | Device and method for long-distance signal transmission |
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| 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: 20161221 Termination date: 20170629 |