CN203590350U - Video doorphone system with two signal lines carrying out power supply and communication - Google Patents
Video doorphone system with two signal lines carrying out power supply and communication Download PDFInfo
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- CN203590350U CN203590350U CN201320755097.8U CN201320755097U CN203590350U CN 203590350 U CN203590350 U CN 203590350U CN 201320755097 U CN201320755097 U CN 201320755097U CN 203590350 U CN203590350 U CN 203590350U
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- 230000005236 sound signal Effects 0.000 claims abstract description 11
- 230000008054 signal transmission Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 238000011900 installation process Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a video doorphone system with two signal lines carrying out power supply and communication. The system comprises an outdoor interphone and an indoor interphone. The outdoor interphone modulates a video signal into a FM modulation signal with a high signal frequency through a FM modulation module, and the FM modulation signal and an audio signal with a low signal frequency share the two signal lines so as to carry out signal transmission and interference does not exist. And the signals are coupled to the two signal lines through a high-pass filter and a low-pass filter respectively so that the signals transmitted on the two signal lines do not influence other parts. The indoor interphone adopts a corresponding mode to separate and demodulate an original signal. The outdoor interphone and the indoor interphone adopt new structures so that visible interphone communication between the two interphones can be realized only through the two signal lines and power supply can be realized too. An installation process can be simplified and installation cost can be reduced.
Description
[technical field]
The utility model relates to a kind ofly powers and the visible dialogue system of communication by two holding wires.
[background technology]
At present, existing visible dialogue system wiring is complicated, doorway machine generally needs 5 lines to the video intercom communication of indoor set, it is respectively: 1 tone frequency channel wire, 1 video coaxial line, 1 connection, two power lines, its principle is: tone frequency channel wire transmission of audio signal, video coaxial line transmission video signal, connection transmission of control signals, indoor set is powered to doorway machine by two power lines, so, circuit line radical makes to install complicated more, easily makes mistakes, also be 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, providing a kind of powers and the visible dialogue system of communication by two holding wires, between its outdoor talkback machine and intercom, only need just can realize power supply and video intercom communication by two holding wires, reduce wiring radical, made easy for installation and reduction installation cost.
For achieving the above object, the utility model has adopted following technical proposal:
A kind ofly by two holding wires, power and the visible dialogue system of communication, include the outdoor talkback machine 1 and the intercom 2 that by two holding wires 5, carry out wire communication connection, described outdoor talkback machine 1 is provided with first control circuit plate 11 and camera 12, on described first control circuit plate 11, be connected with the first audio frequency intercommunication module 13 for carrying out audio frequency intercommunication with intercom 2, described camera 12 outputs are connected with the FM modulation module 14 that controlled by first control circuit plate 11, described FM modulation module 14 signal output parts are connected with the first high pass filter 15, described the first audio frequency intercommunication module 13 signal transmission ends are connected with the first low pass filter 16, described the first high pass filter 15 1 outputs are connected on a holding wire after being connected with the first low pass filter 16 1 outputs, first high pass filter 15 another outputs are connected on another root holding wire after being connected with first low pass filter 16 another outputs, on described outdoor talkback machine 1, be also provided with the first power module 17 for powering, described the first power module 17 power inputs are connected with the first low pass filter 16, described intercom 2 is provided with second control circuit plate 21, and the FM demodulation module 24 and the second audio frequency intercommunication module 26 that controlled by second control circuit plate 21, described FM demodulation module 24 signal input parts are connected with the second high pass filter 22 and signal output part is connected with display screen 25, described the second audio frequency intercommunication module 26 signal transmission ends are connected with the second low pass filter 23, described the second high pass filter 22 1 inputs are connected on a holding wire after being connected with the second low pass filter 23 1 inputs, second high pass filter 22 another inputs are connected on another root holding wire after being connected with second low pass filter 23 another inputs, on described intercom 2, be also provided with and controlled for to intercom 2 by second control circuit plate 21, the second source module 27 of outdoor talkback machine 1 power supply, described second source module 27 outputs are also connected with the second low pass filter 23.
On described outdoor talkback machine 1, be also provided be electrically connected to first control circuit plate 11 for initiate first of communication callings to intercom 2, control button 18.
On described intercom 2, be also provided with the second control button 28 being electrically connected to second control circuit plate 21.
On described intercom 2, be also provided with the directly link interface 29 for another intercom 2 of cascade, described directly link interface 29 comprises the third high bandpass filter 291 that is connected to the second high pass filter 22 outputs and the 3rd low pass filter 292 that is connected to the second low pass filter 23 outputs, after described third high bandpass filter 291 outputs and the 3rd low pass filter 292 outputs are coupled as the directly link end of directly link interface 29.
In described the first audio frequency intercommunication module 13 and the second audio frequency intercommunication module 26, be all provided with microphone for realizing audio frequency intercommunication between outdoor talkback machine 1 and intercom 2, loudspeaker and for the voice-grade modems of audio signal modulation /demodulation.
Described two holding wires 5 are dark red parallel lines.
Compared with prior art, the beneficial effects of the utility model are:
1, with existing outdoor talkback machine and intercom between adopt 5 lines realize power supply with video intercom communication compare, this case outdoor talkback machine and intercom adopt new construction, make the video intercom communication between them only need just can realize power supply and video intercom communication by two holding wires, it can be simplified installation procedure and reduce installation cost.
2, by FM modulation module, vision signal is modulated into the FM modulation signal that signal frequency is high, the audio signal that itself and signal frequency are low shares two holding wires and carries out signal transmission, do not interfere with each other, and by high pass filter, low pass filter, be coupled on two holding wires respectively, make the signal transmitting on two holding wires not affect miscellaneous part.
3, do not need separately to establish a control signal connection, when the confidential calling intercom of outdoor talkback, first, first control circuit plate arrives second control circuit plate by the first high pass filter, two holding wire the second high pass filters, FM demodulation module after can identifying high-frequency pulse signal by the output of FM modulation circuit, second control circuit plate detects this can identify high-frequency impulse, just can know and have call request, after connecting, just can carry out video intercom communication.
4, intercom is provided with the directly link interface for cascade, intercom can the other intercom of cascade by directly link interface and another two holding wire, its cascade is easy for installation, and practicality is good, can need cascade that a plurality of intercoms are installed according to floor etc.
[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 ofly by two holding wires, power and the visible dialogue system of communication, include the outdoor talkback machine 1 and the intercom 2 that by two holding wires 5, carry out wire communication connection, described outdoor talkback machine 1 is provided with first control circuit plate 11 and camera 12, on described first control circuit plate 11, be connected with the first audio frequency intercommunication module 13 for carrying out audio frequency intercommunication with intercom 2, described camera 12 outputs are connected with the FM modulation module 14 that controlled by first control circuit plate 11, described FM modulation module 14 signal output parts are connected with the first high pass filter 15, described the first audio frequency intercommunication module 13 signal transmission ends are connected with the first low pass filter 16, described the first high pass filter 15 1 outputs are connected on a holding wire after being connected with the first low pass filter 16 1 outputs, first high pass filter 15 another outputs are connected on another root holding wire after being connected with first low pass filter 16 another outputs, on described outdoor talkback machine 1, be also provided with the first power module 17 for powering, described the first power module 17 power inputs are connected with the first low pass filter 16, described intercom 2 is provided with second control circuit plate 21, and the FM demodulation module 24 and the second audio frequency intercommunication module 26 that controlled by second control circuit plate 21, described FM demodulation module 24 signal input parts are connected with the second high pass filter 22 and signal output part is connected with display screen 25, described the second audio frequency intercommunication module 26 signal transmission ends are connected with the second low pass filter 23, described the second high pass filter 22 1 inputs are connected on a holding wire after being connected with the second low pass filter 23 1 inputs, second high pass filter 22 another inputs are connected on another root holding wire after being connected with second low pass filter 23 another inputs, on described intercom 2, be also provided with and controlled for to intercom 2 by second control circuit plate 21, the second source module 27 of outdoor talkback machine 1 power supply, described second source module 27 outputs are also connected with the second low pass filter 23.
On described outdoor talkback machine 1, be also provided be electrically connected to first control circuit plate 11 for initiate first of communication callings to intercom 2, control button 18.
On described intercom 2, be also provided with the second control button 28 being electrically connected to second control circuit plate 21.
On described intercom 2, be also provided with the directly link interface 29 for another intercom 2 of cascade, described directly link interface 29 comprises the third high bandpass filter 291 that is connected to the second high pass filter 22 outputs and the 3rd low pass filter 292 that is connected to the second low pass filter 23 outputs, after described third high bandpass filter 291 outputs and the 3rd low pass filter 292 outputs are coupled as the directly link end of directly link interface 29.
In described the first audio frequency intercommunication module 13 and the second audio frequency intercommunication module 26, be all provided with microphone for realizing audio frequency intercommunication between outdoor talkback machine 1 and intercom 2, loudspeaker and for the voice-grade modems of audio signal modulation /demodulation.
Described two holding wires 5 are dark red parallel lines.
The operation principle of this case is as follows:
Second source module 27 output dc voltages, it is carried in 5 electrical potential differences that can affect between two lines of two holding wires, and it does not affect the transmission of following audio signal and vision signal.
On outdoor talkback machine 1,14 pairs of camera 12 outputting video signals of FM modulation module carry out FM frequency modulation, the FM modulation signal that output signal frequency is high, and the low audio signal of the first audio frequency intercommunication module 13 output signal frequencies, so, they can transmit on two holding wires 5 simultaneously; Between FM modulation module 14 and two holding wires 5, the first high pass filter 15 is set, can make FM modulation module 14 in output FM modulation signal, not be subject to again the interference of low frequency signal on two holding wires 5, between the first audio-frequency module 13 and two holding wires 5, the first low pass filter 16 is set, can makes the first audio-frequency module 13 not disturbed by high-frequency signal on two holding wires 5 when carrying out audio frequency intercommunication communication with the second audio-frequency module 26.
The principle that the second high pass filter 22 and the second low pass filter 23 are set on intercom 2 is identical with the principle of outdoor talkback machine 1, also be that signal is selected and Anti-Jamming, the second high pass filter 22 output end signals are after 24 demodulation of FM demodulation module, restore vision signal, the second low pass filter 23 output end signals restore audio signal through the second audio frequency intercommunication module 26.
Above-mentioned audio signal adopts two holding wires 5 to transmit, and can carry out differential coding control by the first audio frequency intercommunication module 13, the second audio frequency intercommunication module 26, realizes better transmission and controls.
The course of work of this case is as follows:
During holding state, second control circuit plate 21 is controlled second source module 27 and is carried out battery saving mode, and make the first power module 17 enter battery saving mode, outdoor talkback machine 1 and intercom 2, all in holding state, do not have the transmission of audio signal and vision signal yet.
During work, outdoor user controls button 18 to first control circuit plate 11 input triggering signals by first, the call request signal of first control circuit plate 11 is by FM modulation module 14, the first high pass filter 15, two holding wires 5, the second high pass filter 22, FM demodulation module 24 arrives second control circuit plate 21, then, second control circuit plate 21 is controlled second source module 27 and is carried out normal mode of operation, and second source module 27 output end voltages are by the second low pass filter 23, the first low pass filter 16 is transferred to the first power module 17, by the first power module 17, to outdoor talkback machine 1 upper-part, provide normal operating voltage, so, second control circuit plate 21, first control circuit plate 11 enters normal mode of operation.
Camera 12 work, its vision signal is by arriving FM demodulation module 24 after the first high pass filter 15, two holding wires 5, the second high pass filter 22 after the modulation of FM modulation module 14, and FM demodulation module 24 demodulates this vision signal and exports to display screen 25 and shows for indoor user and watch; On the other hand, outdoor user carries out two-way intercommunication communication by the first audio-frequency module 13, the first low pass filter 16, the second low pass filter 23, the second audio-frequency module 26 with indoor user.
After video intercommunication communication finishes, second control circuit plate 21 is controlled second source module 27 and is reentered battery saving mode, and outdoor talkback machine 1 and intercom 2 are all in holding state.
As mentioned above, during special circumstances, indoor user can enter normal mode of operation by the second control button 28, second control circuit plate 21 ACTIVE CONTROL second source modules 27, the first power module 17, makes intercom 2 initiatively exhale camera 12 on outdoor talkback machine 1, watches outdoor situations.
As mentioned above, this case protection be a kind of visible dialogue system of power with communication by two holding wires, all technical schemes identical or close with this case structure all should be shown the protection range that falls into this case.
Claims (6)
1. by two holding wires, power and the visible dialogue system of communication for one kind, it is characterized in that including outdoor talkback machine (1) and the intercom (2) that carries out wire communication connection by two holding wires (5), described outdoor talkback machine (1) is provided with first control circuit plate (11) and camera (12), on described first control circuit plate (11), be connected with the first audio frequency intercommunication module (13) for carrying out audio frequency intercommunication with intercom (2), described camera (12) output is connected with the FM modulation module (14) that controlled by first control circuit plate (11), described FM modulation module (14) signal output part is connected with the first high pass filter (15), described the first audio frequency intercommunication module (13) signal transmission ends is connected with the first low pass filter (16), described the first high pass filter (15) one outputs are connected on a holding wire after being connected with the first low pass filter (16) one outputs, another output of the first high pass filter (15) is connected on another root holding wire after being connected with another output of the first low pass filter (16), on described outdoor talkback machine (1), be also provided with the first power module (17) for powering, described the first power module (17) power input is connected with the first low pass filter (16), described intercom (2) is provided with second control circuit plate (21), and the FM demodulation module (24) and the second audio frequency intercommunication module (26) that controlled by second control circuit plate (21), described FM demodulation module (24) signal input part is connected with the second high pass filter (22) and signal output part is connected with display screen (25), described the second audio frequency intercommunication module (26) signal transmission ends is connected with the second low pass filter (23), described the second high pass filter (22) one inputs are connected on a holding wire after being connected with the second low pass filter (23) one inputs, another input of the second high pass filter (22) is connected on another root holding wire after being connected with another input of the second low pass filter (23), on described intercom (2), be also provided with and be used for to intercom (2) by second control circuit plate (21) control, the second source module (27) of outdoor talkback machine (1) power supply, described second source module (27) output is also connected with the second low pass filter (23).
2. according to claim 1 a kind ofly power and the visible dialogue system of communication by two holding wires, it is characterized in that being also provided with on described outdoor talkback machine (1) is electrically connected to first control circuit plate (11) for initiate the first control button (18) of communication calling to intercom (2).
3. according to claim 1 a kind ofly power and the visible dialogue system of communication by two holding wires, is characterized in that being also provided with on described intercom (2) the second control button (28) being electrically connected to second control circuit plate (21).
4. according to claim 1 a kind ofly power and the visible dialogue system of communication by two holding wires, it is characterized in that being also provided with on described intercom (2) the directly link interface (29) for another intercom of cascade (2), described directly link interface (29) comprises the 3rd low pass filter (292) that is connected to the third high bandpass filter (291) of the second high pass filter (22) output and is connected to the second low pass filter (23) output, after described third high bandpass filter (291) output and the 3rd low pass filter (292) output are coupled as the directly link end of directly link interface (29).
5. according to claim 1 a kind ofly power and the visible dialogue system of communication by two holding wires, is characterized in that being all provided with in described the first audio frequency intercommunication module (13) and the second audio frequency intercommunication module (26) microphone for realizing audio frequency intercommunication between outdoor talkback machine (1) and intercom (2), loudspeaker and for the voice-grade modems of audio signal modulation /demodulation.
6. according to a kind of described in claim 1-5 any one, by two holding wires, power and the visible dialogue system of communication, it is characterized in that described two holding wires (5) are dark red parallel lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755097.8U CN203590350U (en) | 2013-11-25 | 2013-11-25 | Video doorphone system with two signal lines carrying out power supply and communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755097.8U CN203590350U (en) | 2013-11-25 | 2013-11-25 | Video doorphone system with two signal lines carrying out power supply and communication |
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| Publication Number | Publication Date |
|---|---|
| CN203590350U true CN203590350U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320755097.8U Expired - Lifetime CN203590350U (en) | 2013-11-25 | 2013-11-25 | Video doorphone system with two signal lines carrying out power supply and communication |
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| CN (1) | CN203590350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472295A (en) * | 2016-01-06 | 2016-04-06 | 广州视声智能科技有限公司 | Circuit for transmitting video signal of two-wire system video door phone system |
-
2013
- 2013-11-25 CN CN201320755097.8U patent/CN203590350U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472295A (en) * | 2016-01-06 | 2016-04-06 | 广州视声智能科技有限公司 | Circuit for transmitting video signal of two-wire system video door phone system |
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| GR01 | Patent grant |