CN202652443U - Video intercommunication telephone adapter - Google Patents
Video intercommunication telephone adapter Download PDFInfo
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- CN202652443U CN202652443U CN 201220154442 CN201220154442U CN202652443U CN 202652443 U CN202652443 U CN 202652443U CN 201220154442 CN201220154442 CN 201220154442 CN 201220154442 U CN201220154442 U CN 201220154442U CN 202652443 U CN202652443 U CN 202652443U
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- intercommunication
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- power supply
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Abstract
The utility model provides a video intercommunication telephone adapter, comprising power input, ringing control, power conversion and power indication, a cross current source, a ringing sound generating circuit, exterior line and ringing sound monitoring, power source monitoring, a DTMF detection circuit, a master control MCU, an output expansion circuit, an intercommunication incoming call detection, a switching matrix, an intercommunication interface and unlocking signal output. The video intercommunication telephone adapter is characterized in that the adapter also comprises a common telephone interface, which is connected to the switching matrix via call-answering detection that is meanwhile connected to the intercommunication interface. Multiple intercommunication extension telephones are connected via the video intercommunication telephone adapter of the utility model and therefore have an unlocking function, a hanging-up function and the like at the same time, realizing one-to-many intercommunication, finally enhancing the door opening efficiency and providing convenience for visitors.
Description
Technical field
The utility model relates to a kind of visible dialogue system, particularly a kind of video intercom telephone switching device.
Background technology
Present visible dialogue system, in the residential area no matter resident family, lessee or family type, do not have in the ordinary course of things many interphone extensions, only be in a kind of man-to-man alone in the doorway video intercom, like this, be confined to the doorway and answer and brought inconvenient trouble when resident family answered, also have influence on visitor's stand-by period simultaneously.
The utility model content
The technical problems to be solved in the utility model, be to overcome existing technical deficiency, provide a kind of phone that makes to become interphone extension, the intercommunication function such as extension is had simultaneously unblank, hang up, greatly improved the unblank video intercom telephone switching device of efficient of resident family simultaneously.
The utility model is achieved in that a kind of video intercom telephone switching device, comprise power supply input (101), ring control (102), power conversion and power supply indication (103), crossing current source (104), the tinkle of bells produces circuit (106), outside line and the tinkle of bells detect (107), Power Supply Monitoring (108), DTMF testing circuit (110), main control MCU (111), out-expander (112), the intercommunication incoming call detects (113), switching matrix (114), intercommunication interface (119) and unlocking signal output (120), described ring control (102), the tinkle of bells produces circuit (106), outside line and the tinkle of bells detect (107), Power Supply Monitoring (108), DTMF testing circuit (110), out-expander (112), the intercommunication incoming call detects (113) and unlocking signal output (120) all is connected to main control MCU (111), described power supply input (101) is connected to ring control (102) and power conversion and power supply indication (103), power conversion and power supply indication (103) are also connected to crossing current source (104), ring control (102), crossing current source (104), the tinkle of bells produces circuit (106), DTMF testing circuit (110), out-expander (112) and intercommunication interface (119) all are connected to switching matrix (114), and intercommunication interface (119) is also connected to the intercommunication incoming call and detects (113) and unlocking signal output (120).It is characterized in that: described adapter also comprises common phone interface (118), and common phone interface (118) is connected to switching matrix (114) by carrying machine testing (115), carries simultaneously machine testing (115) and is connected to intercommunication interface (119).
Described adapter also comprises outside line input and commutator (116) and internal and external line commutation circuit (105), outside line input and commutator (116) are connected to common phone interface (118) and internal and external line commutation circuit (105) by power off relay (117), outside line input and commutator (116) are also connected to outside line and the tinkle of bells detects (107), and internal and external line commutation circuit (105) is connected to switching matrix (114).
Described adapter also comprises a memory circuit (109), and described memory circuit (109) is connected to main control MCU (111).
Described main control MCU (111) comprises an AT89S51 chip, is responsible for the logical process of whole adapter.
The utility model has the advantage of: be a kind ofly to connect many interphone extensions by connector, the intercommunication function such as extension had simultaneously unblank, hang up, realize the one-to-many intercommunication, the final efficient of opening the door that improves makes things convenient for the visitor.
Description of drawings
In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings.
Fig. 1 is the overall structure schematic diagram of video intercom telephone switching device of the present utility model.
Fig. 2 is the circuit connection diagram of the internal and external line commutation circuit of video intercom telephone switching device of the present utility model.
Fig. 3 is the connection layout that the tinkle of bells of video intercom telephone switching device of the present utility model produces circuit.
Fig. 4 is the outside line of video intercom telephone switching device of the present utility model and the circuit connection diagram that the tinkle of bells detects.
Fig. 5 is the circuit connection diagram that the intercommunication incoming call of video intercom telephone switching device of the present utility model detects.
Fig. 6 is the outside line input of video intercom telephone switching device of the present utility model and the circuit connection diagram of commutator.
Fig. 7 is the circuit connection diagram of the power off relay of video intercom telephone switching device of the present utility model.
Fig. 8 is the circuit connection diagram of the unlocking signal output of video intercom telephone switching device of the present utility model.
Embodiment
See also Fig. 1, it is the overall structure schematic diagram of video intercom telephone switching device of the present utility model, described video intercom telephone switching device comprises power supply input 101, ring control 102, power conversion and power supply indication 103, crossing current source 104, internal and external line commutation circuit 105, the tinkle of bells produces circuit 106, outside line and the tinkle of bells detect 107, Power Supply Monitoring 108, memory circuit 109, DTMF testing circuit 110, main control MCU 111, out-expander 112, the intercommunication incoming call detects 113, switching matrix 114, carry machine testing 115, outside line input and commutator 116, power off relay 117, common phone interface 118, intercommunication interface 119 and unlocking signal output 120, described ring control 102, the tinkle of bells produces circuit 106, outside line and the tinkle of bells detect 107, Power Supply Monitoring 108, memory circuit 109, DTMF testing circuit 110, out-expander 112, intercommunication incoming call detection 113 and unlocking signal output 120 all are connected to main control MCU 111, described power supply input 101 is connected to ring control 102 and power conversion and power supply indication 103, power conversion and power supply indication 103 are also connected to crossing current source 104, ring control 102, crossing current source 104, the tinkle of bells produces circuit 106, DTMF testing circuit 110, out-expander 112, carry machine testing 115 and intercommunication interface 119 all is connected to switching matrix 114, described common phone interface 118 is connected to switching matrix 114 by carrying machine testing 115, carry simultaneously machine testing 115 and be connected to intercommunication interface 119, intercommunication interface 119 is also connected to intercommunication incoming call detection 113 and unlocking signal output 120, described outside line input and commutator 116 are connected to common phone interface 118 and internal and external line commutation circuit 105 by power off relay 117, and outside line input and commutator 116 are also connected to outside line and the tinkle of bells detects 107.
From JP11, JP2 input, 12V offers MCU and outside executive circuit respectively for power supply input 101 12V that provide from the outside, 48V and 75V voltage, and 48V offers telephone set, and 75V provides ringing voltage.
Ring control 102 is in the time of the needs ring, and main control MCU output control signal RING control ringing relay is employed, and ringing voltage is added on the telephone set by R15, makes ringing telephone stations.
The power conversion of power conversion and power supply indication 103 is comprised of a slice 7805, and D28 and R44 form the power supply indication, and E5 is used for absorbing low-frequency noise, and C4 ~ C8 is used for the absorbing high-frequency noise.
Crossing current source 104 circuit are comprised of TL431 and a NPN pipe, provide the crossing current source to phone, TL431 is the three end adjustable shunt reference sources that good thermal stability is arranged that TI company produces, its output voltage just can at random be set to from Vref(2.5V with two resistance) to the interior any value of 36V scope, in this is used, TL431 is as shunt feedback, and the voltage all-the-time stable of REF end is at 2.5V, and it is exactly constant being connected on so the electric current that flows through in the resistance between REF end and ground.
Seeing also Fig. 2, is the circuit connection diagram of the internal and external line commutation circuit of video intercom telephone switching device of the present utility model, and described internal and external line commutation circuit forms commutation circuit by Q2 and Q3, when CON1_SW was low level, the Q5 conducting switched to outside line, as CON1_SW when being high, the Q2 conducting switches to interior lines.
See also Fig. 3, it is the connection layout of the tinkle of bells generation circuit of video intercom telephone switching device of the present utility model, described the tinkle of bells produces main circuit will be by JP4(music IC) forms, in the time of the Q12 conducting, the music of JP4 (music IC) generation outputs on the circuit.
See also Fig. 4, the outside line of video intercom telephone switching device of the present utility model and the circuit connection diagram that the tinkle of bells detects, the Q19 of described outside line and the tinkle of bells testing circuit forms outside line and detects, when connecing outside line, and the Q19 conducting, Q17 forms the tinkle of bells and detects, when ringing-current is arranged, the Q17 conducting, the Q20 composition is carried organizational security and is held, when needs keep outside line, conducting Q20.
Power Supply Monitoring 108 is comprised of the power monitoring chip 810 of special use, and IC2 employs when voltage is lower than 4.5V, allows main MCU reset, and guarantees that the normal received shipment of MCU is capable.
Memory circuit 109 is comprised of U8 24C16, and MCU accesses memory circuit by iic bus, preserves some parameters, and AT24C16 is the i2c bus interface serial storage that Atmel company produces, always the EEPROM space of total 2K byte. can byte wipe word.
DTMF testing circuit 110 is comprised of MT8870, being responsible for decoding the dtmf signal on the circuit out gives the MCU identifying processing, MT8870 is the dtmf decoder that MITEL company produces, and has the dtmf signal decoding function, can be giving MCU by Q1 ~ Q4 after the decoding of the dtmf signal on the telephone wire.
Main control MCU 111 circuit are comprised of a slice 51, be responsible for the logical process of whole adapter, AT89S51 is a low-power consumption, 8 single-chip microcomputers of high-performance CMOS, sheet includes can be the repeatedly erasable 1000 times Flash read-only program memory of 4k Bytes ISP (In-system programmable), device adopts high density, the nonvolatile storage technologies manufacturing of atmel corp, compatibility standard MCS-51 command system and 80C51 pin configuration, integrated general 8 central processing units and ISP Flash memory cell in the chip.
Out-expander 112 mainly is comprised of U12 (595) and IC1 (2003), IC1 mainly drives some relay even loads, U12 is mainly used in switching matrix, the 595th, 8-Bit Serial-Input/Parallel-Output moves register and output latch, through being commonly used to expand the IO mouth, the 2003rd, high withstand voltage, large electric current Darlington display, formed by seven silicon NPN Darlington transistors, 2003 are input as Transistor-Transistor Logic level, output OC open circuit, every road maximum current reaches 500mA, through being usually used in driving the large electric current of relay and so on without part.
Seeing also Fig. 5, is the circuit connection diagram of the intercommunication incoming call detection of video intercom telephone switching device of the present utility model, and described intercommunication incoming call detects when the intercommunication incoming call is arranged, and the negative pole of D46 can be dragged down, the Q36 conducting, thus conversation MCU has the intercommunication incoming call.
Switching matrix 114 mainly is comprised of triode, after 595 drivings, and corresponding triode conducting, thereby the corresponding circuit of gating.
Carry machine testing 115 and mainly formed by the light lotus root, after the phone of correspondence is carried machine, the conducting of light lotus root, thus phone corresponding to conversation MCU carried machine, and which phone luminous LCD indicates carry machine simultaneously.
See also Fig. 6; be the outside line input of video intercom telephone switching device of the present utility model and the circuit connection diagram of commutator, the JP1 of described outside line input and commutator receives outside line, and D14 forms commutator; R1 is a piezo-resistance, plays simultaneously simple lightning protection.
See also Fig. 7, it is the circuit connection diagram of the power off relay of video intercom telephone switching device of the present utility model, described power off relay is when changing adapter and do not connect power supply, relay R LY1 is in open and-shut mode, outside line and phone one are got up, guarantee in normally incoming call of outside line.
Intercommunication interface 119 is comprised of JP8 and JP9, and JP8 receives the indoor machine of intercommunication, and JP9 receives the voice signal of intercom system.
See also Fig. 8, it is the circuit connection diagram of the unlocking signal output of video intercom telephone switching device of the present utility model, telling unlocking signal output is comprised of Q38 and Q43, when needs are opened the talk-back host electric lock, Q43, Q38 conducting, the voltage of 12V is added on the circuit, and talk-back host arrives after detecting, and electric lock is opened.
Video intercom telephone switching device workflow of the present utility model is as follows: when talk-back host is called out indoor extension set by intercom system, the call signal of intercommunication enters the intercommunication telephone adapter by intercommunication interface 119, the intercommunication incoming call detects 113 and detects the main frame calling, notice main control MCU 111, main control MCU 111 is controlled 102 circuit by ring has intercommunication to call out by ordinary telephone set jingle bell and the indoor extension set of notice intercommunication; When resident family after indoor subswitch is answered from intercommunication, carrying the indoor extension set of machine testing 115 circuit notice main control MCU, 111 intercommunications answers, main control MCU 111 is cut off ring and is controlled 102 circuit, common phone stops ring, by switching matrix 114 voice-grade channel of the indoor extension set of intercommunication and talk-back host is switched to together simultaneously, the indoor extension set of intercommunication and talk-back host enter talking state; If common phone is answered, to carry machine testing 115 circuit notice main control MCU 111 common phones and answer, main control MCU 111 is cut off ring and is controlled 102 circuit, and indoor extension set and the common phone of not answering stop ring.By switching matrix 114 phone of answering and the voice-grade channel of talk-back host are switched to together simultaneously, phone and the talk-back host of answering enter talking state, " # " key in pressing phone, dtmf signal is by DTMF testing circuit 110 circuit notice main control MCU 111, the master exports 120 circuit by MCU control unlocking signal and produces a unlocking signal to talk-back host, finishes and unblanks.
Claims (4)
1. video intercom telephone switching device, comprise power supply input (101), ring control (102), power conversion and power supply indication (103), crossing current source (104), the tinkle of bells produces circuit (106), outside line and the tinkle of bells detect (107), Power Supply Monitoring (108), DTMF testing circuit (110), main control MCU (111), out-expander (112), the intercommunication incoming call detects (113), switching matrix (114), intercommunication interface (119) and unlocking signal output (120), described ring control (102), the tinkle of bells produces circuit (106), outside line and the tinkle of bells detect (107), Power Supply Monitoring (108), DTMF testing circuit (110), out-expander (112), the intercommunication incoming call detects (113) and unlocking signal output (120) all is connected to main control MCU (111), described power supply input (101) is connected to ring control (102) and power conversion and power supply indication (103), power conversion and power supply indication (103) are also connected to crossing current source (104), ring control (102), crossing current source (104), the tinkle of bells produces circuit (106), DTMF testing circuit (110), out-expander (112) and intercommunication interface (119) all are connected to switching matrix (114), intercommunication interface (119) is also connected to the intercommunication incoming call and detects (113) and unlocking signal output (120), it is characterized in that: described adapter also comprises common phone interface (118), common phone interface (118) is connected to switching matrix (114) by carrying machine testing (115), carries simultaneously machine testing (115) and is connected to intercommunication interface (119).
2. described video intercom telephone switching device according to claim 1, it is characterized in that: described adapter also comprises outside line input and commutator (116) and internal and external line commutation circuit (105), outside line input and commutator (116) are connected to common phone interface (118) and internal and external line commutation circuit (105) by power off relay (117), outside line input and commutator (116) are also connected to outside line and the tinkle of bells detects (107), and internal and external line commutation circuit (105) is connected to switching matrix (114).
3. described video intercom telephone switching device according to claim 1, it is characterized in that: described adapter also comprises a memory circuit (109), described memory circuit (109) is connected to main control MCU (111).
4. described video intercom telephone switching device according to claim 1, it is characterized in that: described main control MCU (111) comprises an AT89S51 chip, is responsible for the logical process of whole adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220154442 CN202652443U (en) | 2012-04-13 | 2012-04-13 | Video intercommunication telephone adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220154442 CN202652443U (en) | 2012-04-13 | 2012-04-13 | Video intercommunication telephone adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202652443U true CN202652443U (en) | 2013-01-02 |
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ID=47421463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220154442 Expired - Fee Related CN202652443U (en) | 2012-04-13 | 2012-04-13 | Video intercommunication telephone adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202652443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348697A (en) * | 2013-07-25 | 2015-02-11 | 腾讯科技（深圳）有限公司 | Video communication information processing method, device and system |
-
2012
- 2012-04-13 CN CN 201220154442 patent/CN202652443U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104348697A (en) * | 2013-07-25 | 2015-02-11 | 腾讯科技（深圳）有限公司 | Video communication information processing method, device and system |
| US10404633B2 (en) | 2013-07-25 | 2019-09-03 | Tencent Technology (Shenzhen) Company Limited | Enhanced video instant messaging processing |
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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: 20130102 Termination date: 20150413 |
|
| EXPY | Termination of patent right or utility model |