CN201266992Y - Four-wire system building video talking sub-telephone - Google Patents
Four-wire system building video talking sub-telephone Download PDFInfo
- Publication number
- CN201266992Y CN201266992Y CNU2008201028907U CN200820102890U CN201266992Y CN 201266992 Y CN201266992 Y CN 201266992Y CN U2008201028907 U CNU2008201028907 U CN U2008201028907U CN 200820102890 U CN200820102890 U CN 200820102890U CN 201266992 Y CN201266992 Y CN 201266992Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- switch
- triode
- capacitor
- pin
- 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
Images
Abstract
The utility model discloses a four-wire building visual intercome extension which comprises a house-service wire interface, a supply circuit, a display module, an unlocking interface, a hang-up switch, a ringing signal amplifying circuit, a conversation handle circuit and a DC load circuit; the house-service wire interface comprises four-core house-service wires, namely, a system ground wire, an extension work power cord, an audio line and an unlocking signal wire and a video line, wherein, the system ground wire is grounded, the extension work power cord is connected to the display module by the supply circuit, simultaneously, the output end of the supply circuit is respectively connected to the ringing signal amplifying circuit and the DC load circuit which are respectively connected to the hang-up switch, the conversation handle circuit is connected to the hang-up switch, the audio line and the unlocking signal wire are connected to the unlocking interface and the hang-up switch, and the video line is connected to the display module. The utility model has the advantages that as the four-core house-service wires are provided, the installation of the extension is convenient; as the standby of extension does not need electricity, the power consumption of the system is greatly reduced; and the system has high stability.
Description
[technical field]
The utility model is about a kind of building talkback device, is meant a kind of four-wire system building visual intercommunication extension set especially.
[background technology]
Existing building conversational system comprises main frame and the extension set that is electrically connected with main frame, main frame is installed on stair mouth place outdoors, an intercommunication extension set is joined by each resident family, when the people is visiting, by main frame touch-call extension set, the extension subscriber off-hook can be conversed with the visitor, and extension subscriber also can directly be pressed unlock key on extension set, the door at stair mouth place will be opened automatically, and the visitor promptly can come in.
The house lead in of existing extension set is generally six cores, is respectively: a core positive source, a core power cathode, two core connections, a core tone frequency channel wire, a core video line.And all devices of intercom system needs charged in real time, extension set needs in real time and main frame or deconcentrator carry out data communication, finish main frame and the data of dividing confidential communication as: calling, off-hook, on-hook, unblank etc., the communications protocol of RS-485 is adopted in general communication, on the existing extension set single-chip microcomputer is arranged, can the real-time communication extension set must not power down.
As shown in Figure 1, be the circuit theory diagrams of existing a kind of intercommunication extension set.In the principle of this traditional extension is formed, comprise a single-chip microcomputer U1, be used for finishing the communication with the floor deconcentrator, therefore just require extension set to power in real time, wherein extension set interface JP1 connects the floor deconcentrator, and this extension set interface JP1 is 7 cores, is respectively:
The GND ground wire;
T1 audio frequency uplink;
T2 audio frequency downlink;
The real-time power line of+18V;
The S video line;
The Ud connection;
BJ parallel operation line, the wherein optional wiring of parallel operation line.
Existing extension set house lead in number is too many, pays particular attention to during installation, otherwise setup error, whole system just can't be worked.In addition, extension set needs power supply in real time, and therefore, the power consumption of system is very big, and the system of power supply in real time is in the state of work all the time, occurs the deadlock phenomenon easily.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of four-wire system building visual intercommunication extension set that has the four-core house lead in and do not have electric standby.
The utility model solves the problems of the technologies described above by the following technical programs: a kind of four-wire system building visual intercommunication extension set, comprise the house lead in interface, power supply circuits, display module, the interface of unblanking, the take-up switch, the bell signal amplifying circuit, the talking handle circuit, also comprise the DC load circuit, described house lead in interface has the four-core house lead in, be respectively system's ground wire, extension set working power line, tone frequency channel wire and unlocking signal line, video line, wherein system is ground wire grounded, extension set working power line is connected to display module by power supply circuits, the output of power supply circuits is connected respectively to bell signal amplifying circuit and DC load circuit simultaneously, bell signal amplifying circuit and DC load circuit are connected respectively to the take-up switch, the talking handle circuit is connected to the take-up switch, tone frequency channel wire and unlocking signal line are connected to unblank interface and take-up switch, and video line is connected to display module.
This utility model further is specially:
Described power supply circuits comprise a diode D1 and a capacitor C 1, this diode D1 anode extension working power line, negative electrode is connected to display module, the positive pole of capacitor C 1 is received the negative electrode of diode D1, minus earth, the tie point between capacitor C 1 and the diode D1 is received bell signal amplifying circuit, DC load circuit.
Described take-up switch has 5 pins, 1 pin of described take-up switch is connected to tone frequency channel wire and unlocking signal line, 2 pin are connected to the talking handle circuit, 3 pin and 5 pin are connected respectively to the bell signal amplifying circuit, and 3 pin are connected to the DC load circuit simultaneously, and 4 pin, 5 pin and 6 pin link to each other.
Described bell signal amplifying circuit comprises resistance R 1, R3, R4, R5, capacitor C 3, C4, triode T6, wherein an end of resistance R 4 is connected to 3 pin of take-up switch, the other end of resistance R 4 is connected to the base stage of triode T6 by capacitor C 3, first end of resistance R 1 is connected the emitter of triode T6, second end is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1, resistance R 5 is connected in parallel between the base stage of second end of resistance R 1 and triode T6, resistance R 3 is connected in parallel between the base stage and ground of triode T6, capacitor C 3 is connected in parallel between second end and ground of resistance R 1, and the collector electrode of triode T6 is connected to 5 pin of take-up switch 5.
Described DC load circuit comprises resistance R 6, R7, R11, R12, capacitor C 5, triode T5, first end of resistance R 6 is connected to 5 pin of take-up switch, second end is connected to the emitter of triode T5, the grounded collector of triode T5, be connected in parallel on the two ends of resistance R 6 after capacitor C 5 and resistance R 12 series connection, wherein the other end of capacitor C 5 is received first end of resistance R 6, the other end of resistance R 12 is received second end of resistance R 6, resistance R 7 is connected in parallel between the base stage and ground of triode T5, and the base stage of triode T5 is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1 by resistance R 11.
The advantage of the utility model four-wire system building visual intercommunication extension set is:
1, having the four-core house lead in, traditional video intercom house lead in six cores are saved two cores, mainly be that two cores with data communication are integrated into and finish transmission on the tone frequency channel wire, so extension set is easy for installation;
2. extension set is no electric standby, have only main frame to exhale logical corresponding extension set after, exhaled logical charged the starting working of extension set, and other extension set also is in not electriferous state, reduced the power consumption of system greatly;
3. because system only just powers on when main frame is called out, extension set or deconcentrator and main frame can be finished resetting of system when powering on, the deadlock phenomenon of system can not occur, greatly the stability of the work of Ti Gaoing.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the circuit theory diagrams of existing a kind of four-wire system building visual intercommunication extension set.
Fig. 2 is the circuit theory diagrams of the utility model four-wire system building visual intercommunication extension set.
[embodiment]
See also Fig. 2, this utility model four-wire system building visual intercommunication extension set comprises house lead in interface 1, power supply circuits 2, display module 3, the interface 4 of unblanking, take-up switch 5, bell signal amplifying circuit 6, DC load circuit 7, talking handle circuit 8.
Wherein house lead in interface 1 has the four-core house lead in, is respectively:
G: system's ground wire;
V: extension set working power line;
T: tone frequency channel wire, and unlocking signal line;
S: video line;
G line ground connection wherein, the V line is connected to display module 3 by power supply circuits 2, the output of power supply circuits 2 is connected respectively to bell signal amplifying circuit 6 and DC load circuit 7 simultaneously, bell signal amplifying circuit 6 and DC load circuit 7 are connected respectively to take-up switch 5, and talking handle circuit 8 is connected to take-up switch 5.The T line is connected to unblank interface 4 and take-up switch 5, and the S line is connected to display module 3.
The T line of house lead in interface 1 is connected respectively to unblank interface 4 and take-up switch 5, the acting as of the described interface 4 of unblanking: when extension set is conversed, main frame is carried out unlock operation.Connect a touch-switch (figure does not show) on this unblanks interface 4, when touch-switch was pressed, T line and ground short circuit, the voltage on the T line were zero, and main frame was carried out and unblanked when main frame detected T line voltage and is zero.The circuit of this part and touch-switch can adopt existing various forms.
Described take-up switch 5 has two states: on-hook and off-hook.During standby, at first switch 5 is in hook state.1 pin of take-up switch 5 is connected to T line, 2 pin and is connected to talking handle circuit 8,3 pin and 5 pin and is connected respectively to bell signal amplifying circuit 6,3 pin and is connected to DC load circuit 7,4 pin, 5 pin and 6 pin simultaneously and links to each other.During on-hook, 1 pin of this take-up switch 5 links to each other with 3 pin, and 2 pin link to each other with 5 pin; During off-hook, 1 pin of this take-up switch 5 links to each other with 4 pin, and 2 pin link to each other with 6 pin.
Described bell signal amplifying circuit 6 comprises resistance R 1, R3, R4, R5, capacitor C 3, C4, triode T6.Wherein an end of resistance R 4 is connected to 3 pin of take-up switch 5, the other end of resistance R 4 is connected to the base stage of triode T6 by capacitor C 3, first end of resistance R 1 is connected the emitter of triode T6, second end is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1, resistance R 5 is connected in parallel between the base stage of second end of resistance R 1 and triode T6, resistance R 3 is connected in parallel between the base stage and ground of triode T6, capacitor C 3 is connected in parallel between second end and ground of resistance R 1, and the collector electrode of triode T6 is connected to 5 pin of take-up switch 5.Signal on the T line enters bell signal amplifying circuit 6 by take-up switch 5, process resistance R 4 and capacitor C 4 are every straight back output AC bell signal, form amplifying circuit by resistance R 5, R3, R1 and triode T6, again by in the take-up switch 5 input talking handle circuit 8, capacitor C 3 was carried out the High frequency filter of amplifying circuit power supply after bell signal amplified.
Described DC load circuit 7 comprises resistance R 6, R7, R11, R12, capacitor C 5, triode T5.First end of resistance R 6 is connected to 5 pin of take-up switch 5, second end is connected to the emitter of triode T5, the grounded collector of triode T5, be connected in parallel on the two ends of resistance R 6 after capacitor C 5 and resistance R 12 series connection, wherein the other end of capacitor C 5 is received first end of resistance R 6, the other end of resistance R 12 is received second end of resistance R 6, resistance R 7 is connected in parallel between the base stage and ground of triode T5, and the base stage of triode T5 is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1 by resistance R 11.The effect of this DC load circuit 7 is to form a DC load on the T line, and the direct voltage on the T line is changed; Change in voltage on the main frame detection T line is judged the connection situation of extension set.When main frame is exhaled reduction of fractions to a common denominator machine, the base stage of triode T5 is linked on the V line by resistance R 11, the voltage of 15V is arranged on the V line this moment, then triode T5 is operated in conducting state, the hook state of T line by take-up switch 5 through resistance R 6, R12, capacitor C 5, link the emitter of triode T5, then this moment, the T line formed DC channel with ground, on the T line because this DC load, voltage on the T line is changed, and the change in voltage that main frame detects on the T line judges whether extension set normally connects.
Acting as of described talking handle circuit 8: bell signal is amplified and plays; When the conversation of extension set and main frame, microphone signal is amplified and deliver on the main frame, and the main frame voice signal that main frame is uploaded by the T line amplified by the receiver loudspeaker play by the T line.Wherein the D1 in the circuit, D2, D3, D4 are to carrying out rectification on the T line, triode T2, T1, resistance R 2, R3, R4, capacitor C 2 are formed triode combination discharge circuit and signal are amplified the biasing circuit of resistance R 1, R5, R6, capacitor C 1, C3 composition Mike MIC.This talking handle circuit 8 can adopt existing various talking handle circuit.
The workflow of this four-wire system building visual intercommunication extension set is followed successively by: standby, ring, off-hook, converse, unblank, on-hook.
House lead in G, the V of extension set house lead in interface 1 when standby at ordinary times, T, S be gating not, and extension set is not charged.
The corresponding extension set of deconcentrator gating when main frame is called out, G, V, T, S house lead in are provided the power supply of extension set work by gating on the V line at this moment, and this moment, the display module 3 of extension set began to work on power; The T line is uploaded bell signal, and extension set begins ring; The S line is uploaded the main frame vision signal, images on the display module 3.
When the extension set off-hook, because the mechanical action of take-up switch 5, the state of meeting generation moment open circuit on the T line, the voltage on the T line also can change because T line open circuit and produce the change in voltage of a moment, and main frame judges that by the change in voltage on the detection T line off-hook of extension set moves.
Behind the extension set off-hook, Host Shutdown bell signal, main frame enter the intercommunication state with extension set, and extension set can be realized speech talkback with main frame.
When the touch-switch that connects on the interface 4 of unblanking of pressing extension set, T line and the short circuit of G line, this moment, the voltage of T line also can change thereupon, and main frame judges by the change in voltage on the detection T line whether extension set will unblank.
When the extension set on-hook, since the mechanical action of take-up switch 5, the state of T line branch generation moment open circuit, the voltage on the T line also can change because T line open circuit, and main frame is judged the action of the on-hook of extension set by the change in voltage on the detection T line; After the extension set on-hook, the output of the power supply of Host Shutdown V line, deconcentrator is not worked, house lead in G, V, T, S open circuit, extension set enters holding state.
Claims (5)
1. four-wire system building visual intercommunication extension set, comprise the house lead in interface, power supply circuits, display module, the interface of unblanking, the take-up switch, the bell signal amplifying circuit, the talking handle circuit, it is characterized in that: also comprise the DC load circuit, described house lead in interface has the four-core house lead in, be respectively system's ground wire, extension set working power line, tone frequency channel wire and unlocking signal line, video line, wherein system is ground wire grounded, extension set working power line is connected to display module by power supply circuits, the output of power supply circuits is connected respectively to bell signal amplifying circuit and DC load circuit simultaneously, bell signal amplifying circuit and DC load circuit are connected respectively to the take-up switch, the talking handle circuit is connected to the take-up switch, tone frequency channel wire and unlocking signal line are connected to unblank interface and take-up switch, and video line is connected to display module.
2. four-wire system building visual intercommunication extension set as claimed in claim 1, it is characterized in that: described power supply circuits comprise a diode D1 and a capacitor C 1, this diode D1 anode extension working power line, negative electrode is connected to display module, the positive pole of capacitor C 1 is received the negative electrode of diode D1, minus earth, the tie point between capacitor C 1 and the diode D1 is received bell signal amplifying circuit, DC load circuit.
3. four-wire system building visual intercommunication extension set as claimed in claim 2, it is characterized in that: described take-up switch has 5 pins, 1 pin of described take-up switch is connected to tone frequency channel wire and unlocking signal line, 2 pin are connected to the talking handle circuit, 3 pin and 5 pin are connected respectively to the bell signal amplifying circuit, 3 pin are connected to the DC load circuit simultaneously, and 4 pin, 5 pin and 6 pin link to each other.
4. four-wire system building visual intercommunication extension set as claimed in claim 3, it is characterized in that: described bell signal amplifying circuit comprises resistance R 1, R3, R4, R5, capacitor C 3, C4, triode T6, wherein an end of resistance R 4 is connected to 3 pin of take-up switch, the other end of resistance R 4 is connected to the base stage of triode T6 by capacitor C 3, first end of resistance R 1 is connected the emitter of triode T6, second end is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1, resistance R 5 is connected in parallel between the base stage of second end of resistance R 1 and triode T6, resistance R 3 is connected in parallel between the base stage and ground of triode T6, capacitor C 3 is connected in parallel between second end and ground of resistance R 1, and the collector electrode of triode T6 is connected to 5 pin of take-up switch 5.
5. four-wire system building visual intercommunication extension set as claimed in claim 3, it is characterized in that: described DC load circuit comprises resistance R 6, R7, R11, R12, capacitor C 5, triode T5, first end of resistance R 6 is connected to 5 pin of take-up switch, second end is connected to the emitter of triode T5, the grounded collector of triode T5, be connected in parallel on the two ends of resistance R 6 after capacitor C 5 and resistance R 12 series connection, wherein the other end of capacitor C 5 is received first end of resistance R 6, the other end of resistance R 12 is received second end of resistance R 6, resistance R 7 is connected in parallel between the base stage and ground of triode T5, and the base stage of triode T5 is connected to the diode D1 of power supply circuits 2 and the node between the capacitor C 1 by resistance R 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201028907U CN201266992Y (en) | 2008-07-01 | 2008-07-01 | Four-wire system building video talking sub-telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201028907U CN201266992Y (en) | 2008-07-01 | 2008-07-01 | Four-wire system building video talking sub-telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266992Y true CN201266992Y (en) | 2009-07-01 |
Family
ID=40833363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201028907U Expired - Fee Related CN201266992Y (en) | 2008-07-01 | 2008-07-01 | Four-wire system building video talking sub-telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266992Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631231A (en) * | 2013-11-27 | 2014-03-12 | 乐视致新电子科技（天津）有限公司 | Method and device for monitoring smart home and smart home system |
| CN106982360A (en) * | 2017-04-28 | 2017-07-25 | 广东安居宝数码科技股份有限公司 | Intercom system and its doorway machine |
-
2008
- 2008-07-01 CN CNU2008201028907U patent/CN201266992Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631231A (en) * | 2013-11-27 | 2014-03-12 | 乐视致新电子科技（天津）有限公司 | Method and device for monitoring smart home and smart home system |
| CN106982360A (en) * | 2017-04-28 | 2017-07-25 | 广东安居宝数码科技股份有限公司 | Intercom system and its doorway machine |
| CN106982360B (en) * | 2017-04-28 | 2019-07-30 | 广东安居宝数码科技股份有限公司 | Intercom system and its doorway machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201955832U (en) | Building intercom system | |
| CN203825684U (en) | Wireless intelligent building talkback gangway machine | |
| CN201266992Y (en) | Four-wire system building video talking sub-telephone | |
| CN103888728B (en) | Storied building visible intercommunication system and its method | |
| CN101888458B (en) | Building intercom system | |
| CN101340603A (en) | Building inter-communicating system established by public telephone network | |
| CN201222778Y (en) | Public fixed telephone network building visible intercommunication telephone system | |
| CN201207681Y (en) | Novel indoor talk-back extension | |
| CN201657017U (en) | Gateway of intelligent home system | |
| CN201104361Y (en) | Intelligent elevator intercommunication system | |
| CN206524845U (en) | A kind of new digital conference system | |
| CN209002139U (en) | Door-phone | |
| CN201515397U (en) | Telephone terminal adopting photoelectric detection hanging up | |
| CN202617226U (en) | Card swiping telephone | |
| CN204291279U (en) | Realize the hand miaow that mobile phone remote intercommunication, sound control and load are charged | |
| CN204145596U (en) | A kind of Smart Home Telephone control system based on power line carrier | |
| CN2476145Y (en) | Gate inhibition controller using telephone public net | |
| CN202475698U (en) | Building intercommunication device about network voice protocol | |
| CN201054703Y (en) | Building interphone device | |
| CN202652443U (en) | Video intercommunication telephone adapter | |
| CN206790575U (en) | Security type voice module and programme-controlled telephone system | |
| CN207910944U (en) | A kind of radio voice pinboard | |
| CN209002103U (en) | Visual Speaker-phone | |
| CN203912044U (en) | Device for connecting telephone system and intercommunication scheduling system | |
| CN205984233U (en) | Prevent wireless display of outage suddenly |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20170701 |