CN2347315Y - Multifunctional a. c. line carrier telephone - Google Patents

Abstract

The utility model relates to a multifunctional AC line carrier telephone, which is directly connected with a local telephone line. The multifunctional AC line carrier telephone comprises a host machine and an extension set. The host machine is provided with an internal-line extension-set direct dialing external-line circuit and an external-line direct dialing internal-line circuit, and the extension set is provided with a ringing automatic canceling telephone. The multifunctional AC line carrier telephone not only can meet the talking and communicating need in departments, but also can achieve that one external line is connected with multiple extensions sets through the host machine to directly dial to talk. The utility model has the advantages of fully automatic switching, no blocking, no interference, voice prompt, absence automatic stop, simple installation, cost saving, etc. The communication pressure of the local telephone network is relieved, and the multifunctional AC line carrier telephone can be widely suitable for enterprises, institutions, factories, mines, government offices, schools, hospitals and countryside. The multifunctional AC line carrier telephone is an ideal communication tool for the internal and external lines.

Description

Multifunctional AC line carrier telephone

The utility model relates to a kind of and local line is directly refuted the Multifunctional AC line carrier telephone that connects.

The carrier telephone that the present widely popular 220V of utilization power transmission line carries out communication, be that sky, Shenzhen emerging communication apparatus company at first succeeded in developing and put on market in 1991, its principle is with audio signal carrier signal to be modulated, feed-in 220V line amplifies through receiving again, the method of demodulation is carried out communication, do not need other stringing road, on the power transmission line of same transformer, can realize number dialing telephone call, this telephone set is easy to use, anti-interference, sound is clear, and has a selective call, group busy, opening functions such as videoconference, is the desirable office accommodation of intra-sector communication.But internal and external line direct dialing conversation can not be transferred, realize to this kind telephone set with local telephone, thereby have a strong impact on applying of carrier telephone.

The purpose of this utility model is exactly for solving the deficiency that existing AC line carrier telephone exists, and provides a kind of and carrier telephone can directly be refuted with local network connect, realize the interior lines direct outward dialing, the Multifunctional AC line carrier telephone of direct dialing in interior lines extension set.

This carrier telephone divides two kinds in machine tool and extension set.

Machine tool and extension set are all converted by common AC line carrier telephone.Machine tool comprises reception amplifying circuit GF, demodulator circuit GT, decoding latch cicuit YM, logic judging circuit LG ₁, modulation transmitter TFS, audio amplifier circuit A etc.Extension set comprises reception amplifying circuit GF, demodulator circuit GT, decoding latch cicuit YM, logic judging circuit LG ₂, modulation transmitter TFS, two audio sending circuit BH, audio amplifier circuit A, ringing circuit LING and earphone EG, microphone MIC etc.

The direct outward dialing circuit is set on the √ machine tool, is connected to capacitor C in the earphone EG and the microphone MIC terminals that exchange carrier telephone ₁, C ₂, C ₃And resistance R ₁, R ₂, R ₃The match circuit PB that forms, its other end passes through relay J ₂Normal opened contact J ₂₂Connect local telephone, logic judging circuit LG ₁Connect resistance R ₄, triode BG ₁And relay J ₂

After extension set is put through machine tool, the logic judging circuit LG in the machine tool ₁Just export a high level and make triode BG ₁Saturated, drive relay J ₂Adhesive, match circuit PB and local telephone are connected, so just can direct outward dialing.

Machine tool is established the direct dialing in interior lines in addition and is divided machine circuit, by diode D ₁, D ₂, capacitor C ₄, resistance R ₅, R ₆And delay circuit DL ₁Form, an end is by relay J ₂Normally closed contact J ₂₂Connect local telephone, other end delay circuit DL ₁Meet logic judging circuit LG ₁, again by logic judging circuit LG ₁Connect resistance R ₄, triode BG ₁And relay J ₂During direct dialing in interior lines extension sets, the bell signal on the local telephone passes through capacitor C ₄, diode D ₁, D ₂, resistance R ₅, R ₆Make delay circuit DL ₁The output high level, delay circuit DL ₁On high level make logic judging circuit LG again ₁To triode BG ₁The output high level, relay J ₂Adhesive, match circuit PB and local telephone are connected.When the interior lines extension set is idle, logic judging circuit LG ₁The output high level makes the sound circuit YN that sets up ₁Work, inform " requesting extension ", put through extension set after, diode D ₃Conducting makes relay J ₂Continue adhesive, if the interior lines extension set is not idle, logic judging circuit LG ₁Just make the sound circuit YN that sets up ₂Work is informed " please wait a moment dials again ", delay circuit DL ₁After the time-delay, make relay J ₂Disconnect.

After the interior lines extension set is put through in outside line, if ring unanswered, it is with ring always, and no matter whether on-hook of outside line, this is can not judge that the on-hook signal of outside line causes owing to carry the machine of dialing, for solving this technical problem, need that ring is set and eliminate circuit automatically in extension set, as long as the logic judging circuit LG in extension set ₂And delay circuit DL is set between the radiating circuit TFS ₂Get final product, when a certain extension set receives outward dialing, logic judging circuit LG ₂Just export a positive pulse to delay circuit DL ₂Make its output high level, ring unanswered still behind the certain number of times of ring, delay circuit DL ₂With regard to output low level radiating circuit TFS is quit work, thereby make machine tool can not receive the signal of extension set, make relay J ₂Disconnect, machine tool quits work, and extension set is also just ended ring.

This Multifunctional AC line carrier telephone, realized that an outside line connects many extension set dial-in direct conversations by machine tool, not only can satisfy the needs of department's INCOM intercom contact, and can give connection to external call, realize the interior lines direct outward dialing, direct dialing in interior lines extension set, divide functions such as the automatic elimination of power ringing, has automatic exchange, clog-free, noiseless, voice suggestion, characteristics such as absent automatic stop, thereby alleviated the pressure of local telephone communication net, and simple installation, cost saving, can be widely used in each enterprises and institutions, factories and miness, office, school, hospital and vast rural area are a kind of desirable internal and external line contact communication instruments.

The drawing explanation of accompanying drawing:

Accompanying drawing 1 is the utility model machine tool circuit theory diagrams.

Accompanying drawing 2 is the utility model extension circuit schematic.

The utility model is introduced embodiment below with reference to accompanying drawing.

Machine tool of this carrier telephone and extension set all adopt the design circuit and the installation plate of RDX-9202 type AC line carrier telephone, and the structure and the operation principle of machine tool and extension set are as follows:

Machine tool comprises reception amplifying circuit GF, demodulator circuit GT, decoding latch cicuit YM, logic judging circuit LG ₁, modulation transmitter TFS, match circuit PB, sound circuit YN ₁, YN ₂, audio amplifier circuit A, delay circuit DL ₁Deng.As shown in Figure 1, wherein match circuit PB by resistance R ₁, R ₂, R ₃, capacitor C ₁, C ₂, C ₃Form delay circuit DL ₁By integrated circuit NE555 and capacitor C ₅, resistance R ₇, R ₈, diode D ₅Form logic judging circuit LG ₁By or the door F ₂, with the door F ₃, F ₄, triode BG ₃, resistance R ₉, R ₁₀Form.

Extension set comprises reception amplifying circuit GF, decoding latch cicuit YM, logic judging circuit LG ₂, modulation transmitter TFS, two audio sending circuit BH, ringing circuit LING and earphone EG, microphone MIC, audio amplifier circuit A, delay circuit DL ₂Deng.Extension set delay circuit DL wherein ₂With machine tool delay circuit DL ₁Form identical.

When the direct dialing in extension set, put through machine tool earlier, the bell signal of outside line passes through capacitor C ₄, diode D ₁, D ₂, resistance R ₅, R ₆Export a high level to delay circuit DL ₁, pass through D then ₄, or the door F ₂Make triode BG ₁Saturated, relay J ₂Adhesive, match circuit PB and outside line are connected, if this moment line be busy, 15KHz receives amplifying circuit output high level, by NAND gate F ₅, F ₆After make with the door F ₃Export a high level, sound circuit YN ₂Work is informed " please dialling after a while ", delay circuit DL again ₁Time-delay back output low level, or door F ₂Output low level, relay J ₂Disconnect, match circuit PB separates with outside line; If line idle, NAND gate F ₅The output high level is with door F ₄The output high level, sound circuit YN ₁" requesting extension " informed in work, simultaneously triode BG ₂Saturated, relay J ₁Adhesive is with door F ₁The output high level, the 15KHz modulation transmitter work of machine tool, to 220V line feed-in 15KHz modulation signal, outside line this moment can be dialed directly extension set, as shown in Figure 2, after putting through, the decoding latch cicuit YM in the extension set will export a high level to ringing circuit LING, make ringing circuit work, simultaneously to or door F ₈Export a positive pulse, make delay circuit DL ₂Export a high level to the 19KHz modulation transmitter, make its modulation signal to a 19KHz of 220V line transmission, after machine tool was received the accent city signal of 19KHz, the 19KHz in the machine tool received amplifying circuit output high level and arrives or door F ₂Make relay J ₂Continue to keep adhesive.At this moment, if there is the people to answer, the hook switch H in the extension set upsprings, or door F ₈The output high level, delay circuit DL ₁Keep high level, ring simultaneously stops, and both sides can converse; If the ring unanswered, in the extension set or the door F ₈Be output as low level, delay circuit DL ₂Be output as low level after the time-delay, the 19KHz modulation signal stops emission, does not also just receive the 19KHz signal in the machine tool, the diode D in the machine tool ₃End, or door F ₂Output low level, relay J ₂Disconnect, match circuit PB and outside line break away from.

When direct outward dialing, as shown in Figure 2, extension set hangs on, and hook switch H upsprings, if this moment line be busy, 15KHz receives amplifying circuit output high level to NAND gate F ₇Make triode BG ₄End relay J ₃Not adhesive, telephone set can not use, otherwise, if line idle, triode BG ₄Saturated, relay J ₃Adhesive is with door F ₆The output high level, the work of 15KHz modulation transmitter, to 220V line feed-in 15KHz modulation signal, can dial this moment, after putting through machine tool, decoding latch cicuit YM (see figure 1) in the machine tool makes its modulation signal to 220V line feed-in 19KHz, simultaneously to logic judging circuit LG to high level of 19KHz modulation transmitter output ₁Export a high level, make BG ₁Saturated, relay J ₂Adhesive gets final product direct outward dialing this moment.The outside line signal passes through C ₃Enter amplifier A ₁Amplify after 19KHz modulation transmitter feed-in 220V line, interior lines extension set signal receives amplifying circuit through the 15KHz of machine tool, and demodulator circuit GT enters amplifier A ₂, pass through C ₂The outside line of feed-in local telephone network, after the talk-through on-hook, the 15KHz of machine tool receives amplifying circuit and does not receive signal and output low level, through NAND gate F ₅Make triode BG ₃Saturated, triode BG ₁End relay J ₂Disconnect, match circuit PB separates with outside line.

This Multifunctional AC line carrier telephone can drive the work of 2-50 platform extension set by 1 machine tool, and generally speaking, coupling 4-10 platform is advisable.

Claims (5)

1. one kind and local line are directly refuted the Multifunctional AC line carrier telephone that connects, and comprise machine tool, and machine tool comprises and receives amplifying circuit GF, demodulator circuit GT, decoding latch cicuit YM, logic judging circuit LG ₁, modulation transmitter TFS, audio amplifier circuit A, it is characterized in that:

Machine tool is provided with the direct outward dialing circuit, is connected to capacitor C in receiver EG, the transmitter MIC terminals of AC line carrier telephone ₁, C ₂, C ₃And resistance R ₁, R ₂, R ₃The match circuit of forming, its other end passes through relay J ₂Normal opened contact J ₂₂Connect local telephone, logic judging circuit LG ₁Connect resistance R ₄, triode BG ₁And relay J ₂,

Machine tool is established the direct dialing in interior lines in addition and is divided machine circuit, by diode D ₁, D ₂, capacitor C ₄, resistance R ₅, R ₆And delay circuit DL ₁Form, an end is by relay J ₂Normally closed contact J ₂₂Connect local telephone, other end delay circuit DL ₁Meet logic judging circuit LG ₁, again by logic judging circuit LG ₁Connect resistance R ₄, triode BG ₁And relay J ₂

2. Multifunctional AC line carrier telephone according to claim 1 is characterized in that: the delay circuit DL that machine tool is provided with ₁Adopt integrated circuit NE555 to reach by capacitor C ₅, resistance R ₇, R ₈And diode D ₅Form.

3. Multifunctional AC line carrier telephone according to claim 1 is characterized in that: match circuit PB and logic judging circuit LG on the machine tool ₁Between and be connected to sound circuit YN ₁With sound circuit YN ₂

4. one kind and local line are directly refuted the Multifunctional AC line carrier telephone that connects, and comprise extension set, and extension set comprises and receives amplifying circuit GF, demodulator circuit GT, decoding latch cicuit YM, logic judging circuit LG ₂, modulation transmitter TFS, two audio sending circuit BH, audio amplifier circuit A, ringing circuit LING and earphone EG, microphone MIC etc. is characterized in that: at the logic judging circuit LG of extension set ₂And be provided with the ring delay circuit DL of elimination effect automatically between the modulation transmitter TFS ₂

5. Multifunctional AC line carrier telephone according to claim 4 is characterized in that: the delay circuit DL that extension set is provided with ₂Be to adopt integrated circuit NE555 to reach by capacitor C ₅, resistance R ₇, R ₈And diode D ₅Form.