CN201374727Y - Building communication system - Google Patents
Building communication system Download PDFInfo
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- CN201374727Y CN201374727Y CN200920006331U CN200920006331U CN201374727Y CN 201374727 Y CN201374727 Y CN 201374727Y CN 200920006331 U CN200920006331 U CN 200920006331U CN 200920006331 U CN200920006331 U CN 200920006331U CN 201374727 Y CN201374727 Y CN 201374727Y
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Abstract
The utility model provides a building communication system. The building communication system comprises an indoor unit and a doorphone which are connected through a grounding wire, a power cord and a first communication wire; the doorphone comprises call keystokes; one end of each call keystoke is connected with the grounding wire, and the other end thereof is connected with the first communication wire; and the indoor unit comprises a voltage dividing circuit, a switching element, and a controller. The voltage dividing circuit is connected with the first communication wire so as to form certain bias voltage on the first communication wire; one end of the switching element is connected with a power supply, and the other end thereof is connected with the power cord; the input end of the controller is connected with the first communication wire, and the other end thereof is connected with the control end of the switching element; and the controller is connected with a hang-up keystoke so as to switch out the switch element and cut off the connection between the power cord and the power supply when the hang-up keystoke is in hook state. The utility model can supply electricity to the doorphone only when needed, so that not only no difficult is added to the use of the communication system, but also the effects of electricity conservation and prolonged service lives of components are realized.
Description
Technical field
The utility model relates to the building communication system field that is made of indoor set and doorway machine, particularly the improvement that power supply is carried out to doorway machine.
Background technology
The building communication system that adopts in the building generally includes indoor set and the doorway machine that is connected by the array electric wire, and doorway machine (being little doorway machine or entrance machine again) generally has call button, camera, loudspeaker and microphone.Indoor set generally has the control button, plucks/the on-hook button, display screen, loudspeaker and microphone.
When the visitor arrives, press the call button on the doorway machine, send call request, at this moment, will shake tinkling of pieces of jade prompting of indoor set has the people to call out.In order to give the position of visitor's indicating call button, call button is provided with an indicator light usually, with the prompting visitor.
After the visitor called out, after indoor user was touched the off-hook button, the display screen of indoor set showed the visitor's of place, doorway that camera photographs image.For band gate inhibition's system, indoor user can be touched the control button to open the gate after confirming the visitor.
Existing, adopt independently power supply circuits respectively doorway machine and indoor set to be powered usually, under holding state, operating voltage formation is arranged also on the doorway machine like this, can monitor the state of button in real time.But this supply power mode can make the parts of doorway machine such as camera in running order always, has not only reduced the useful life of doorway machine parts, also causes waste of energy because of continued power.
For sort this problem out can increase control circuit in doorway machine, close power supply during standby to camera.When having only the visitor to touch call button, just power to camera by control circuit, but the shortcoming that adopts this method is the time that control circuit can not accurately confirm to cut out camera, if being set, delay circuit solves this problem, may take place between visitor and the user also when conversing, the situation that camera just is forced closed is made troubles to use.The long of the time setting that postpones then do not reach economize on electricity and prolongs the camera effect in useful life.In addition, adopt the waste of energy that miscellaneous part that this method can't reduce doorway machine causes because of continued power and the loss of parts.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of building communication system, can only power to doorway machine in needs, neither can make troubles to use, can reach economize on electricity again and prolong the parts effect in useful life.
The building communication system that the utility model provides comprises indoor set and doorway machine, is connected by earth connection, power line and first connection between indoor set and the doorway machine, and doorway machine comprises:
Call button, the one end is connected with ground connection, and the other end is connected with first connection, and when call button was pressed, the first connection ground connection produced low level signal, and indoor set comprises:
Bleeder circuit, it is connected with first connection, makes the certain bias voltage of formation on first connection;
Switching device, the one end is connected with power supply, and the other end is connected with power line, when switching device is closed, power line and power connection;
Controller, its input is connected with first connection, and output is connected with the control end of switching device,
When controller had low level signal to import at its input, the control switch device made its closure, energized line and power supply, controller is connected with the on-hook button, when the on-hook button is in hook state, switching device is disconnected, being connected between cut off the electricity supply line and the power supply.
Like this, unmanned visiting, when call button disconnects, because on first connection, be formed with certain bias voltage, so controller disconnects switching device, cut off being connected between power line and the power supply, therefore doorway machine outage, promptly the building communication system is in holding state.
Press call button on the doorway machine the visitor, the first connection ground connection, when the input of controller produced low level signal, controller control switch device made its closure, energized line and power supply, therefore, doorway machine gets electric, enters operating state.Getting in touch between indoor personnel and visitor finishes, and when pressing the on-hook button, controller disconnects switching device, being connected between cut off the electricity supply line and the power supply, and doorway machine outage at this moment, the building communication system is got back to holding state.
Therefore, building communication system of the present utility model can only be powered to doorway machine in needs, can reach economize on electricity and prolongs the effect in parts useful life and don't can make troubles to use.
Wherein, doorway machine also comprises audio-frequency module, and its signal end is connected with first connection, and power end is connected with power line; Indoor set also comprises audio processing modules, and its signal end is connected with first connection.
Because doorway machine also comprises the audio-frequency module that is connected with power line, indoor set also comprises audio processing modules, and both are connected by first connection, like this, when on power line, power connection being arranged, can carry out audio frequency between doorway machine and the indoor set and be connected, realize the function of conversation.
Preferable, also being connected with second connection between indoor set and the doorway machine, doorway machine also comprises video module, its signal end is connected with second connection; Indoor set also comprises video processing module, and its signal end is connected with second connection.
Like this, when on power line, power connection being arranged, can carry out video between doorway machine and the indoor set and be connected, realize the function that video transmits.
Wherein, doorway machine also comprises light-emitting diode, and an end of light-emitting diode is connected with first connection, and the other end is connected with ground connection.
Like this, when doorway machine is cut off the power supply, can utilize the voltage on first connection, make lumination of light emitting diode, play the effect of indication.
Wherein, an end of described light-emitting diode also is connected with power line.
Like this, when on power line, power connection being arranged, can make light-emitting diode send bigger light, the indication power connection.
Wherein, controller comprises, the processing module input control circuit, and its input is connected with first connection, in order to detect the potential change of first connection;
The switching device control circuit is connected with the control end of switching device, is used for the closed or disconnection of control switch device;
The on-hook detection module is connected with the on-hook button, is used to detect the on-hook button and whether is in hook state;
Processing module, its input is connected with the output of processing module input control circuit, and output is connected with the input of switching device control circuit, when the on-hook button is in hook state, to switching device control circuit output control signal, so that switching device disconnects.
That is, controller is made of processing module input control circuit, switching device control circuit, on-hook detection module and processing module, therefore can design each circuit and module as required.
Wherein, described processing module input control circuit comprises: second triode, the 15 resistance, and the 12 resistance and the 13 resistance, wherein,
The collector electrode of second triode is connected with power supply through the 15 resistance, and the base stage of second triode is connected with audio signal wire through the 13 resistance of bleeder circuit, through the 12 grounding through resistance of bleeder circuit, and the grounded emitter of second triode.
Therefore, the processing module input control circuit has effect simple in structure.
Wherein, described switching device is a relay.
Because described switching device adopts relay, so constitute simple in structurely, cost is low.
Wherein, described switching device control circuit comprises: first triode, the tenth resistance and the 11 resistance, wherein,
The grounded emitter of described first triode, the collector electrode of first triode coil by described relay is connected with power supply, and the base stage of first triode is through the tenth grounding through resistance, and manages the output of module through the 11 resistance joint.
Therefore, described switching device control circuit has effect simple in structure.
Description of drawings
Fig. 1 is the circuit theory diagrams of building communication system.
Embodiment
Fig. 1 is the circuit theory diagrams of building communication system, as shown in the figure, the building communication system comprises indoor set 100 and the doorway machine 200 that connects by interface, wherein, interface comprises indoor set interface CN10 and doorway machine interface CN1, adopt 4 heart yearns to connect between indoor set interface CN10 and the doorway machine interface CN1, first pin of indoor set interface CN10 and doorway machine interface CN1 is connected with the two ends of earth connection 1 respectively, second pin is connected with the two ends of power line 2 respectively, three-prong is connected with the two ends of audio signal wire (first connection) 3 respectively, and the 4th pin is connected with the two ends of video signal cable (second connection) 4 respectively.
Wherein, indoor set 100 comprises microphone 102, loudspeaker 101, display screen 109, indoor set 100 also comprises bleeder circuit 112, controller 113, audio processing modules 103, video processing module 104, on-hook button 111 and relay 110, wherein, controller comprises on-hook detection module 108, processing module 107, processing module input control circuit 105 and control relay circuit 106.Adopt control relay circuit 106 as the switching device control circuit in the present embodiment, adopt relay 110 as switching device.
Microphone 102 is connected with audio processing modules 103 with loudspeaker 101, and microphone 102 is used to receive sound, and loudspeaker 101 are used to play sound.
The signal end of audio processing modules 103 is connected with audio signal wire 3, is used for audio signal, and the signal end of described audio processing modules 103 also is connected with power supply+Vcc by the 16 resistance R 16.
The signal end of video processing module 104 is connected with video signal cable 4, is used to handle vision signal.
Wherein, the power end (not shown) of described audio processing modules 103 and video processing module 104 is connected with power supply+Vcc.
On-hook detection module 108 and 111 couplings of on-hook button are used to detect on-hook signal.
Processing module input control circuit 105 is connected with audio signal wire 3, is used for according to the signal on the audio signal wire 3 to the high or low level signal of processing module 107 transmission.
Described processing module input control circuit 105 comprises the second triode N11, the 14 resistance R the 14, the 15 resistance R the 15, the 12 resistance R 12 and the 13 resistance R 13.Wherein, the collector electrode of the second triode N11 is connected with processing module 107 input IN through the 14 resistance R 14, the collector electrode of the second triode N11 is connected with power supply+Vcc through the 15 resistance R 15, the base stage of the second triode N11 is connected with audio signal wire 3 through the 13 resistance R 13, through the 12 resistance R 12 ground connection, the grounded emitter of the second triode N11.
Described control relay circuit 106 comprises the first triode N10, the tenth resistance R 10 and the 11 resistance R 11 and first diode, wherein, the grounded emitter of the described first triode N10, the collector electrode of the first triode N10 is connected with power supply+Vcc through the coil of relay 110, the base stage of the first triode N10 is through the tenth resistance R 10 ground connection, and the base stage of the first triode N10 is also through the output OUT of the 11 resistance R 11 connection processing modules 107.The coils from parallel connection of coils of the first diode D10 and relay 110, the positive pole of the described first diode D10 is connected with the collector electrode of the first triode N11, and negative pole is connected with power supply+Vcc.
Doorway machine 200 comprises camera 201, loudspeaker 202, microphone 203, audio-frequency module 205, video module 204, call button SW1 and LED 1.
Camera 201 is connected with video module 204, is used to gather the image on doorway.
Loudspeaker 202 are connected with audio-frequency module 205 with microphone 203, and microphone 102 is used to receive sound, and loudspeaker 101 are used to play sound.
Audio-frequency module 205 is connected with audio signal wire 3, is used for audio signal.
The end of call button SW1 is connected with ground connection, and the other end is connected with audio signal wire 3 through second resistance R 2, and when call button SW1 pressed, audio signal wire 3 ground connection produced low level signal.
The positive pole of LED 1 is connected with doorway machine power supply+Vdd through the 3rd resistance R 3, and the negative pole of LED 1 is connected with ground.The positive pole of LED 1 also is connected with audio signal wire 3 through the 3rd resistance R 3, the second resistance R 2.
The positive pole of diode D1 connects power line 2, and the negative pole of diode D1 is connected the minus earth of electric capacity E1 and C1 with the electric capacity E1 of parallel connection and the positive pole of C1.The doorway machine power supply is drawn from the negative pole of diode D1.The power end of described audio-frequency module 205 and video module 204 also is connected with doorway machine power supply+Vdd.
Below operation principle of the present utility model is introduced.
During unmanned coming to visit, the call button SW1 of doorway machine 200 is in off-state, at this moment, because the 16 resistance R 16 that is connected with power supply+Vcc plays the effect of drawing, promptly by the 13 resistance R 13, the 12 resistance R 12, the bleeder circuit 112 that the 16 resistance R 16 constitutes makes audio signal wire (first connection) 3 keep higher current potential, the conducting of triode N11 forward bias, the input IN input low level of processing module 107, at this moment the output OUT output low level of processing module 107, the first triode N10 ends, the relay 110 of indoor set 100 disconnects, because relay 110 disconnections of the indoor set 100 that is connected with power supply+Vcc, so the doorway machine power supply+Vdd that is connected with the relay 110 of indoor set 100 by interface cuts off the power supply.The video module 204 and the audio-frequency module 205 that are connected with doorway machine power supply+Vdd are not worked, and camera 201 is closed, and whole building communication system is in holding state, have not only saved electric energy but also prolonged the life-span of parts such as camera 201.Under holding state,,, the position of call button SW1 is indicated so LED 1 is luminous owing on the audio signal wire 3 certain voltage is arranged.But the electric current of the low LED 1 of flowing through of the voltage of this moment is very little, so brightness is very little, and the consumption of electric energy when so just having reduced standby.
Press the call button SW1 of doorway machine 200 as the visitor after, audio signal wire 3 ground connection, the level of audio signal wire 3 is dragged down, the indoor set 100 first triode N11 that are connected with audio signal wire 3 end, the input IN input high level of processing module 107, the processing module 107 that receives high level is exported high level, the second triode N10 conducting, relay 110 gets electric adhesive, and the doorway machine power supply+Vdd that is connected with power supply+Vcc by power line 2 powers on.Audio-frequency module 205 circuit and video module 204 circuit that are connected with doorway machine power supply+Vdd are started working, and camera 201 is opened.Simultaneously since the voltage of doorway machine power supply+Vdd greater than the voltage of audio signal wire 3, so the electrorheological of the LED 1 of flowing through is big, so brightness and become big is indicated power connection.At this moment, indoor user can be watched visitor's image by the display screen 109 of indoor set 100, also can carry out voice call with the visitor by microphone 102 and loudspeaker 101.
Behind the end of conversation, indoor user is touched on-hook button 111, on-hook detection module 108 sends the signal that disconnects relay 110 to processing module 107 after detecting on-hook signal, receive closed relay 110 Signal Processing modules 107 and send low level, the second triode N10 ends, and relay 110 disconnects, doorway machine power supply+Vdd outage, audio-frequency module 205 that is connected with doorway machine power supply+Vdd and video module 204 outages, camera 201 quits work.
Interface of the present utility model adopts 4 heart yearns, push button signalling and audio signal multiplexed audio signal line 3 are so only 4 lines just can be realized the transmission of power supply, audio signal, vision signal and push button signalling not needing to increase independent treatment circuit, simple in structure, cost is low.
Switching device control circuit 106 of the present utility model also comprise with the coils from parallel connection of coils of relay K 10 and negative pole be connected with power supply+Vcc, the anodal first diode D10 that is connected with the collector electrode of the first triode N10, described diode can absorb induced electromotive force, can reduce interference like this, improve the stability of switching device control circuit 106.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.For example, indoor set is controlled dynamo-electric source, doorway by relay in the foregoing description, similar, indoor set also can be controlled dynamo-electric source, doorway by triode, mosfet switching devices such as (metal oxide semiconductor field effect tubes), only need carry out corresponding modification to the control circuit of switching device and get final product.Indoor set adopts same power supply in the present embodiment, also can adopt different power supplys as required, as adopt the power supply of relevant voltage according to the relay model that adopts.
In addition, indoor set can also comprise off-hook button (not shown on the figure) and be used to detect the off-hook detection button (not shown on the figure) whether the off-hook button is in off hook state that wherein the off-hook detection button is connected with processing unit.Press the call button SW1 of doorway machine as the visitor, the input IN input high level of processing module, the processing module 107 that receives high level is not exported high level or low level immediately.When (as 10 seconds) indoor user in the time of setting is touched the off-hook button, the off-hook detection module detects the signal that sends engage relay behind the off hook signal to processing module, receives engage relay signal post-processing module and just sends high level.The second triode conducting, relay gets electric adhesive, and the doorway machine power supply+Vdd that is connected with power supply+Vcc by power line 2 powers on.
When time through setting, the unmanned off-hook button that touches, the output OUT output low level of processing module, the first triode N10 ends, the relay 110 of indoor set 100 disconnects, because the relay 110 of the indoor set 100 that is connected with power supply+Vcc disconnects, the doorway machine power supply+Vdd that is connected with power supply+Vcc by power line 2 cuts off the power supply.
Certainly, on-hook button and off-hook button also can be wholely set.
Claims (9)
1. a building communication system comprises indoor set (100) and doorway machine (200), is connected by earth connection (1), power line (2) and first connection (3) between indoor set (100) and the doorway machine (200), it is characterized in that,
Doorway machine (200) comprising:
Call button (SW1), the one end is connected with earth connection (1), and the other end is connected with first connection (3), and when pressing, first connection (3) ground connection produces low level signal at call button (SW1);
Indoor set (100) comprising:
Bleeder circuit (112), it is connected with first connection (3), first connection (3) is gone up formed certain bias voltage;
Switching device (110), one end and power supply (+Vcc) being connected, the other end is connected with power line (2), when switching device (110) is closed, power line (2) and power supply (+Vcc) connect;
Controller (113), its input is connected with first connection (3), and output is connected with the control end of switching device (110);
When controller (113) has low level signal to import at its input, control switch device (110), make its closure, energized line (2) and power supply (+Vcc), controller (113) is connected with on-hook button (111), at on-hook button (111) when being touched, switching device (110) is disconnected, the line of cutting off the electricity supply (2) and power supply (+being connected between Vcc).
2. system according to claim 1 is characterized in that,
Doorway machine (200) also comprises audio-frequency module (205), and its signal end is connected with first connection (3), and power end is connected with power line (2);
Indoor set (100) also comprises audio processing modules (103), and its signal end is connected with first connection (3).
3. system according to claim 2 is characterized in that, also is connected with second connection (4) between indoor set (100) and the doorway machine (200);
Doorway machine (200) also comprises video module (204), and its signal end is connected with second connection (4);
Indoor set (100) also comprises video processing module (104), and its signal end is connected with second connection (4).
4. system according to claim 1 is characterized in that, doorway machine (200) also comprises light-emitting diode (LED1), and an end of light-emitting diode (LED1) is connected with first connection (3), and the other end is connected with ground connection.
5. system according to claim 4 is characterized in that, an end of described light-emitting diode (LED1) also is connected with power line (2).
6. system according to claim 1 is characterized in that, controller (113) comprising:
Processing module input control circuit (105), its input is connected with first connection (3), in order to detect the potential change of first connection (3);
Switching device control circuit (106) is connected with the control end of switching device (110), is used for the closed or disconnection of control switch device (110);
On-hook detection module (108) is connected with on-hook button (111), is used to detect on-hook button (111) and whether is in hook state;
Processing module (107), its input (IN) is connected with the output of processing module input control circuit (105), output (OUT) is connected with the input of switching device control circuit (106), at on-hook button (111) when being in hook state, to switching device control circuit (106) output control signal, so that switching device (110) disconnects.
7. system according to claim 6 is characterized in that, described processing module input control circuit (105) comprising: second triode (N11), the 15 resistance (R15), the 12 resistance (R12) and the 13 resistance (R13) wherein,
The collector electrode of second triode (N11) through the 15 resistance (R15) and power supply (+Vcc) be connected, the base stage of second triode (N11) is connected with audio signal wire (3) through the 13 resistance (R13) of bleeder circuit (112), through the 12 resistance (R12) ground connection of bleeder circuit (112), the grounded emitter of second triode (N11).
8. system according to claim 6 is characterized in that, described switching device (110) is a relay.
9. system according to claim 8 is characterized in that, described switching device control circuit (106) comprising: first triode (N10), the tenth resistance (R10) and the 11 resistance (R11), wherein,
The grounded emitter of described first triode (N10), the coil of the collector electrode of first triode (N10) by described relay and power supply (+Vcc) be connected, the base stage of first triode (N10) is through the tenth resistance (R10) ground connection, and through the output of the 11 resistance (R11) connection processing module (107).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006331U CN201374727Y (en) | 2009-02-27 | 2009-02-27 | Building communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006331U CN201374727Y (en) | 2009-02-27 | 2009-02-27 | Building communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374727Y true CN201374727Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920006331U Expired - Fee Related CN201374727Y (en) | 2009-02-27 | 2009-02-27 | Building communication system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201374727Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888728A (en) * | 2014-03-12 | 2014-06-25 | 广东安居宝数码科技股份有限公司 | Building video doorphone system and method |
| CN111787281A (en) * | 2020-07-09 | 2020-10-16 | 深圳爱易瑞科技有限公司 | A bi-pass video control circuit for security protection entrance guard |
-
2009
- 2009-02-27 CN CN200920006331U patent/CN201374727Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888728A (en) * | 2014-03-12 | 2014-06-25 | 广东安居宝数码科技股份有限公司 | Building video doorphone system and method |
| CN103888728B (en) * | 2014-03-12 | 2017-12-22 | 广东安居宝数码科技股份有限公司 | Storied building visible intercommunication system and its method |
| CN111787281A (en) * | 2020-07-09 | 2020-10-16 | 深圳爱易瑞科技有限公司 | A bi-pass video control circuit for security protection entrance guard |
| CN111787281B (en) * | 2020-07-09 | 2021-08-10 | 深圳市爱德泰科技有限公司 | A bi-pass video control circuit for security protection entrance guard |
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| 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: 20091230 Termination date: 20180227 |