CN203590349U - Outdoor visual interphone control system carrying out communication through externally connecting two signal lines - Google Patents
Outdoor visual interphone control system carrying out communication through externally connecting two signal lines Download PDFInfo
- Publication number
- CN203590349U CN203590349U CN201320755043.1U CN201320755043U CN203590349U CN 203590349 U CN203590349 U CN 203590349U CN 201320755043 U CN201320755043 U CN 201320755043U CN 203590349 U CN203590349 U CN 203590349U
- Authority
- CN
- China
- Prior art keywords
- module
- pass filter
- signal
- audio
- modulation
- 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
- 230000000007 visual effect Effects 0.000 title abstract 4
- 230000005236 sound signal Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Closed-Circuit Television Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
The utility model discloses an outdoor visual interphone control system carrying out communication through externally connecting two signal lines. The system comprises a control circuit board, a camera, an audio talkback module and a FM modulation module connected to an output terminal of the camera. A signal output terminal of the FM modulation module and an audio signal terminal of the audio talkback module are connected with a high-pass filter and a low-pass filter respectively. Visual talkback communication with an indoor visual interphone can be realized through the two signal lines. The FM modulation module modulates a video signal to a FM modulation signal with a high signal frequency, and the FM modulation signal is not interfered with an audio signal with a low signal frequency. The FM modulation module and audio talkback module are coupled to the two signal lines through the high-pass filter and the low-pass filter respectively so that signals transmitted on the two external signal lines do not influence normal working of the FM modulation module and the audio talkback module.
Description
[technical field]
The utility model relates to the outdoor video intercom control system that a kind of external two holding wires carry out communication.
[background technology]
At present, existing visible dialogue system wiring is complicated, and the video intercom communication of off-premises station and indoor set generally needs 1 tone frequency channel wire, 1 video coaxial line, 1 connection, wherein, tone frequency channel wire transmission of audio signal, video coaxial line transmission video signal, connection transmission of control signals, so, circuit line radical makes to install complicated more, easily make mistakes, be also not easy to postorder and safeguard, and consumptive material is many, installation cost is high.
Therefore, be necessary to address the above problem.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, provide a kind of external two holding wires to carry out the outdoor video intercom control system of communication, it realizes vision signal and audio signal by signal transmission together with two holding wires, has reduced wiring radical, makes easy for installation and reduces installation cost.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of external two holding wires carry out the outdoor video intercom control system of communication, include control circuit board 1, camera 2 for video camera, and the audio frequency intercommunication module 3 for carrying out audio frequency intercommunication with indoor video intercom controlled of controlled circuit board 1, described camera 2 outputs are connected with the FM modulation module 4 that controlled circuit board 1 is controlled, described FM modulation module 4 signal output parts are connected with high pass filter 5, described audio frequency intercommunication module 3 audio signal input/output terminals are connected with low pass filter 6, after described high pass filter 5 one outputs are connected with low pass filter 6 one outputs for an external holding wire, after high pass filter 5 another outputs are connected with low pass filter 6 another outputs for external another root holding wire.
On described control circuit board 1, be also connected with input key 7.
Described audio frequency intercommunication module 3 comprises voice modulation demodulation module 31 and is connected to microphone 32 and the loudspeaker 33 on voice modulation demodulation module 31, described voice modulation demodulation module 31 control signal inputs are connected with control circuit board 1 control signal output, and voice modulation demodulation module 31 audio signal input/output terminals are connected with low pass filter 6.
Compared with prior art, the beneficial effects of the utility model are:
1, the outdoor video intercom control system of this case is carried out video intercom communication with the indoor video intercom being connected and only need just can be realized by two holding wires, FM modulation module is modulated into by vision signal the FM modulation signal that signal frequency is high, the audio signal that itself and signal frequency are low does not interfere with each other, and FM modulation module passes through high pass filter, audio frequency intercommunication module is coupled to respectively on two holding wires by low pass filter, make the signal transmitting on two holding wires externally not affect FM modulation module, the normal work of audio frequency intercommunication module, so, realize outdoor video intercom control system transmission of video and with the audio frequency intercommunication function of indoor video intercom.
2, do not need separately to establish a control signal connection, in the time will calling out indoor video intercom by this outdoor video intercom control system, control circuit board is transferred on the control circuit board of indoor video intercom by high pass filter, two holding wires after first can identifying high-frequency pulse signal by the output of FM modulation circuit, indoor video intercom detects this can identify high-frequency impulse, just can know and have call request, after connecting, just can carry out video intercom communication.
3, reduce wiring radical, made easy for installation and reduction installation cost.
[accompanying drawing explanation]
Fig. 1 is block diagram of the present utility model.
[embodiment]
Below in conjunction with accompanying drawing, by embodiment, the utility model feature and other correlated characteristic are described in further detail, so that technical staff's of the same trade understanding:
As shown in Figure 1, a kind of external two holding wires carry out the outdoor video intercom control system of communication, include control circuit board 1, camera 2 for video camera, and the audio frequency intercommunication module 3 for carrying out audio frequency intercommunication with indoor video intercom controlled of controlled circuit board 1, described camera 2 outputs are connected with the FM modulation module 4 that controlled circuit board 1 is controlled, described FM modulation module 4 signal output parts are connected with high pass filter 5, described audio frequency intercommunication module 3 audio signal input/output terminals are connected with low pass filter 6, after described high pass filter 5 one outputs are connected with low pass filter 6 one outputs for an external holding wire, after high pass filter 5 another outputs are connected with low pass filter 6 another outputs for external another root holding wire.
On described control circuit board 1, be also connected with input key 7, when outdoor user need to call out indoor user by this outdoor video intercom control system, hand is pressed input key 7, then, control circuit board 1 is transferred on the control circuit board of indoor video intercom by high pass filter 15, two holding wires after can identifying high-frequency pulse signal by 4 outputs of FM modulation circuit, indoor video intercom detects this can identify high-frequency impulse, just can know and have call request, after connecting, just can carry out video intercom communication.
Described audio frequency intercommunication module 3 comprises voice modulation demodulation module 31 and is connected to microphone 32 and the loudspeaker 33 on voice modulation demodulation module 31, described voice modulation demodulation module 31 control signal inputs are connected with control circuit board 1 control signal output, and voice modulation demodulation module 31 audio signal input/output terminals are connected with low pass filter 6.
As mentioned above, this case operation principle is as follows:
The vision signal of camera 2 is by the high video modulation signal of FM modulation module 4 output frequencies, and audio signal in audio frequency intercommunication module 3 voice modulation demodulation module 31 output be the audio modulation signal that frequency is low, their frequency ranges are different, can coexist on two holding wires and carry out signal transmission and be independent of each other, as long as correspondence arranges FM demodulation module and audio frequency intercommunication module on the indoor video intercom of receiving terminal, just can realize video intercom communication.
This case FM modulation module 4 is coupled to respectively on two holding wires by low pass filter by high pass filter, audio frequency intercommunication module 3, and the signal that makes to transmit on two holding wires externally does not affect the normal work of FM modulation module 4 and audio frequency intercommunication module 3.
As mentioned above, what this case was protected is the outdoor video intercom control system that a kind of external two holding wires carry out communication, and all technical schemes identical or close with this case structure all should be shown the protection range that falls into this case.
Claims (3)
1. the outdoor video intercom control system that external two holding wires carry out communication, it is characterized in that including control circuit board (1), camera (2) for video camera, and the audio frequency intercommunication module (3) for carrying out audio frequency intercommunication with indoor video intercom controlled of controlled circuit board (1), described camera (2) output is connected with the FM modulation module (4) that controlled circuit board (1) is controlled, described FM modulation module (4) signal output part is connected with high pass filter (5), described audio frequency intercommunication module (3) audio signal input/output terminal is connected with low pass filter (6), after described high pass filter (5) one outputs are connected with low pass filter (6) one outputs for an external holding wire, after another output of high pass filter (5) is connected with another output of low pass filter (6) for external another root holding wire.
2. the outdoor video intercom control system that a kind of external two holding wires according to claim 1 carry out communication, is characterized in that being also connected with on described control circuit board (1) input key (7).
3. the outdoor video intercom control system that a kind of external two holding wires according to claim 1 carry out communication, it is characterized in that described audio frequency intercommunication module (3) comprises voice modulation demodulation module (31) and is connected to microphone (32) and the loudspeaker (33) on voice modulation demodulation module (31), described voice modulation demodulation module (31) control signal input is connected with control circuit board (1) control signal output, and voice modulation demodulation module (31) audio signal input/output terminal is connected with low pass filter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755043.1U CN203590349U (en) | 2013-11-25 | 2013-11-25 | Outdoor visual interphone control system carrying out communication through externally connecting two signal lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755043.1U CN203590349U (en) | 2013-11-25 | 2013-11-25 | Outdoor visual interphone control system carrying out communication through externally connecting two signal lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203590349U true CN203590349U (en) | 2014-05-07 |
Family
ID=50588190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320755043.1U Expired - Fee Related CN203590349U (en) | 2013-11-25 | 2013-11-25 | Outdoor visual interphone control system carrying out communication through externally connecting two signal lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203590349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
-
2013
- 2013-11-25 CN CN201320755043.1U patent/CN203590349U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
| CN109106191B (en) * | 2017-06-26 | 2021-09-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and control device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104023293B (en) | Wired headset with wireless communication function | |
| CN105100330A (en) | Method and mobile terminal for optimizing equipment sound effect | |
| CN106792280A (en) | A kind of intelligent intercom and intercom system | |
| CN203590349U (en) | Outdoor visual interphone control system carrying out communication through externally connecting two signal lines | |
| CN205566625U (en) | Digit conference system | |
| CN105049998B (en) | A kind of audio communication device | |
| CN103458227B (en) | Two-wire system transmission building visible walky-talky system | |
| CN202340252U (en) | Communication cell phone with functions of eliminating echoes and noise for mining | |
| CN206564688U (en) | A kind of audio frequency apparatus | |
| CN203590350U (en) | Video doorphone system with two signal lines carrying out power supply and communication | |
| CN203590361U (en) | Indoor visual interphone control system carrying out communication through externally connecting two signal lines | |
| CN201336727Y (en) | Intelligent household system supporting dual-audio device | |
| CN201590888U (en) | Audio converter | |
| CN201213284Y (en) | Set-top box receiving and transmitting voice signal by wireless mode | |
| CN201018500Y (en) | Bluetooth wireless microphone | |
| CN202772911U (en) | Multiple-bus mine-used broadcast communication network downhole branch control station based on priority | |
| CN103533191B (en) | Onboard passenger communication method and equipment based on plane application | |
| CN203933913U (en) | Have the wired earphone of wireless communication function concurrently | |
| CN203859799U (en) | Line inspection machine used for detecting telecontrol signal | |
| CN218754381U (en) | IP talkback adapter plate for elevator | |
| CN205320264U (en) | Bluetooth sound system | |
| CN204669607U (en) | Wall-hanging intercommunication terminal and the sound-amplification intercommunication system of amplifying | |
| CN218450373U (en) | Digital intercom device based on CANBUS | |
| CN213586219U (en) | Bluetooth headset ENC conversation PCBA of making an uproar falls | |
| CN203504705U (en) | Building intercom terminal with two nonpolar lines |
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: 20140507 |