CN2565223Y - Controller for making ordinary telephone answer interphone for building entrance - Google Patents

Abstract

The utility model relates to a signal converting and controlling device, particularly a controller for making an ordinary telephone answer an interphone for a building entrance, which comprises a casing and an inner circuit, wherein, the inner circuit comprises an SCM, an input port of the SCM is connected with a telephone key detecting circuit and a telephone hanging signal circuit, and an output port of the SCM is connected with a switching control circuit, a switch hook control circuit for an extension of the interphones, and a press-button for opening door control circuit. The utility model also comprises a port CZ1 for connecting with an extension of the interphone, and a two-four line converting circuit is arranged between the port CZ1 and a telephone connecting port. The utility model fills the blank of the prior art. The utility model can realize the function of answering an interphone door bell with a common telephone, opening door by pressing a special key (for example the # key) on the telephone, freely switching between answering an interphone door bell and a common telephone by pressing a special key (for example the * key), automatically switching to the state of answering a common telephone by hanging the telephone after answering an interphone door bell.

Description

Can make ordinary telephone set be used to reply the control device of building talkback machine

Technical field

The utility model relates to a kind of conversion of signals, control device, is specially to make ordinary telephone set be used to reply the control device of building talkback machine.

Background technology

Building talkback machine (system) is widely adopted in resident's building, and the each household resident need not just can converse with the messenger of one deck and control the switching at gate, one deck unit downstairs.Used the people of building talkback machine all such experience can be arranged: when you are just lying up or during just in other room, doorbell has rung, you must go to the doorway and pick up the intercommunication extension set to determine messenger.Can design a kind of control device, make in the family existing ordinary telephone set also can reply, control intercom, no matter you in the kitchen, bedroom, toilet, only need pick up ordinary telephone set nearby just can reply, control intercom, this is thought of as the problem of thirsting for solving for people.

Summary of the invention

The utility model is exactly to solve prior art not have the control of above-mentioned imagination, the problem of conversion equipment, a kind of control device that makes ordinary telephone set be used to reply the building talkback machine is provided, and is purpose with the hardware configuration that this device is provided only.

The utility model is to adopt following technical scheme to realize: can make ordinary telephone set be used to reply the control device of building talkback machine, comprise housing and internal circuit, internal circuit comprises single-chip microcomputer, be connected with the telephone key-press testing circuit in input of single chip, the telephone key-press testing circuit comprises the touch-tone signal receiving chip U2 that its digital signal end links to each other with the single-chip microcomputer input port, the input end of analog signal of this touch-tone signal chip is connected with the audio frequency transformer T1 that is serially connected between telephone wire input port CZ2 and the telephone set connectivity port CZ3 by elementary, with the phone push button signalling coupling circuit of the secondary capacitor C that is connected in series mutually 13 compositions of audio frequency transformer and the resistance R 15 that links to each other with telephone set connectivity port CZ3 by serial connection, R20 and with resistance R 15, phone power supply and signal coupling circuit that the capacitor C 10 that the tie point of R20 links to each other constitutes, internal circuit also comprises and is used for the port CZ1 that is connected with the intercom extension set, door open button two ends with the intercom extension set, microphone hook switch contact and loudspeaker (SPEAK) line end, the MIC line end, the audio frequency line end, power supply and ground wire are by this port introducing device internal circuit, be connected with respectively by triode Q6 in single machine output end, base resistance R17, diode D4, be serially connected with the control switching circuit that the solenoid of the relay J 3 of collector electrode constitutes, by triode Q1, base resistance R1, diode D1, be serially connected with the intercom extension set hook switch control circuit that the solenoid of the relay J 1 of collector electrode constitutes, by triode Q2, base resistance R2, diode D2, be serially connected with the intercom door open button control circuit that the solenoid of the relay J 2 of collector electrode constitutes, wherein relay J 1, the contact of J2 respectively with the line end of the microphone hook switch contact of the intercom extension set of introducing by port CZ1, the line end at door open button two ends links to each other, the contact of relay J 3 is serially connected with the link circuit between telephone wire input port CZ2 and the telephone set connectivity port CZ3, at telephone set connectivity port and the MIC line end of introducing by port CZ1, be connected with between loudspeaker (SPEAKER) line end respectively by the capacitor C 2 that is connected in series, potentiometer R27, capacitor C 4, potentiometer R28, capacitor C 9 and the amplifying circuit that contains triode Q4, contain triode Q3, be connected in two or the four line change-over circuits that the anti-side-tone circuit of the potentiometer R27 at triode Q3 collector electrode and emitter two ends constitutes, also be connected with in input of single chip and contain triode Q5, base resistance R16, collector resistance R18 and the phone on-hook signal circuit that links to each other with the single-chip microcomputer input by its collector electrode.

This device can be connected with visual type or non-visual type intercom, also can be connected with the intercom of the different principle of different manufacturers.At the different intercom of outer lead-out wire, port CZ1 draws the connection of line end and understands different, when having phone, the intercom outside carries machine signal line end, door opening key signal line end, the audio signal line end, the SPEAK line end, the MIC line end, when mains terminals and ground terminal, the audio signal line end, the SPEAK line end, the MIC line end, mains terminals can directly be installed corresponding line end with this with ground terminal and is connected, phone is carried machine signal line end, the door opening key holding wire terminates to this control end that installs corresponding relay, and the normally closed and normal beginning of this moment according to the corresponding relay of logic of holding wire connects power supply or ground.When the intercom outside does not have these line ends, need open the intercom shell homologous lines termination of port CZ1 is gone into intercom inside.When not having the intercommunication extension set of 12V direct current to be connected with inside, this device needs other configuring direct current power supply.

The single-chip microcomputer that this device comprises can be selected multiple model for use, as AT89C2051, AT89C1051, AT90S1200, AT90S2313, its peripheral configuration of different models and connection can be slightly different, the concrete line end of its input, output can be distinguished to some extent, but this difference and difference are that the those of ordinary skill of computer realm is known, need not creative work and just can solve.But it all can satisfy the need of work of this device.

Touch-tone signal receiving chip U2 can select MT8870, CS9370, SC8870, MT8860, MT8888, MT8880, SC8880 etc. for use, and the chip of wherein back three kinds of models has dialling function.Different its peripheral configurations of model, connection and line end are provided with can be different, but thisly do not belong to the category how chip uses, and also is known to the those of ordinary skill of computer realm.

This device provides a kind of conversion equipment that makes ordinary telephone set be used to reply the building talkback machine, has replenished the blank of prior art.Apparatus structure is reasonable in design, and is easy to use and reliable.The function that it can be achieved as follows: ordinary telephone set is replied an intercom doorbell; Open the door by the special keys on the telephone set (as the # key); Freely switch replying between intercom doorbell and the normal telephone by the special keys on the telephone set (as the * key); Reply after the intercom doorbell finishes, the normal telephone state is replied in the automatic switchback of on-hook.

Description of drawings

Fig. 1 is an aerial lug schematic diagram of the present utility model;

Fig. 2 is the circuit theory diagrams of the utility model internal circuit;

Embodiment

Can make ordinary telephone set be used to reply the control device of building talkback machine, comprise housing 1 and internal circuit, internal circuit comprises single-chip microcomputer, single-chip microcomputer is selected AT89C2051 for use, be provided with the telephone key-press testing circuit in input of single chip, the telephone key-press testing circuit comprises its digital signal end 11-15 and single-chip microcomputer input PB0-PB3, the touch-tone signal receiving chip U2 that PB7 links to each other, this touch-tone signal receiving chip is selected MT8870 for use, the signal input part IN of this touch-tone signal receiving chip is connected with the audio frequency transformer T1 that is serially connected between telephone wire input port CZ2 and the telephone set connectivity port CZ3 by elementary, with the phone push button signalling coupling circuit of the secondary capacitor C that is connected in series mutually 13 compositions of audio frequency transformer and the resistance R 15 that links to each other with telephone set connectivity port CZ3 by serial connection, R20 and with resistance R 15, phone power supply and signal coupling circuit that the capacitor C 10 that the tie point of R20 links to each other constitutes, internal circuit also comprises and is used for the port CZ1 that is connected with the intercom extension set, door open button two ends with the intercom extension set, microphone hook switch contact and loudspeaker (SPEAKER) line end, the MIC line end, power supply and ground wire are by this port introducing device internal circuit, output PD0 at single-chip microcomputer, PD1, PD2 is provided with respectively by triode Q6, base resistance R17, diode D4, be serially connected with the control switching circuit that the solenoid of the relay J 3 of collector electrode constitutes, by triode Q1, base resistance R1, diode D1, be serially connected with the intercom extension set hook switch control circuit that the solenoid of the relay J 1 of collector electrode constitutes, by triode Q2, base resistance R2, diode D2, be serially connected with the intercom door open button control circuit that the solenoid of the relay J 2 of collector electrode constitutes, triode Q6, Q1, the base stage of Q2 respectively with single-chip microcomputer signal input part PD0, PD1, PD2 links to each other, wherein relay J 1, the contact of J2 respectively with the line end of the microphone hook switch contact of the intercom extension set of introducing by port CZ1, the line end at door open button two ends links to each other, the contact of relay J 3 is serially connected with the link circuit between telephone wire input port CZ2 and the telephone set connectivity port CZ3, at telephone set connectivity port and the MIC line end of introducing by port CZ1, be connected with respectively between loudspeaker (SPEAKER) line end respectively by the capacitor C 2 that is connected in series, potentiometer R27, capacitor C 4, potentiometer R28, capacitor C 9 and the amplifying circuit that contains triode Q4, contain triode Q3, be connected in two or the four line change-over circuits that the anti-side-tone circuit of the potentiometer R27 at triode Q3 collector electrode and emitter two ends constitutes, the base stage of triode Q4 is connected with resistance R 5, R6, collector electrode is connected with resistance R 7, R26, emitter is connected with resistance R 4, capacitor C 1, the base stage of triode Q3 is connected with resistance R 8, R9, collector electrode is connected with resistance R 10, emitter is connected with resistance R 3, also is connected with in input of single chip and contains triode Q5, base resistance R16, collector resistance R18 and the phone on-hook signal circuit that links to each other with single-chip microcomputer input PB6 by its collector electrode.

This device needs 5 volts, 12 volts power supply power supplies, is provided with power circuit in the device, and this power circuit is conventional circuit structure, and its capacity cell by power supply chip 7805 and chip periphery constitutes.

Device port CZ1 links to each other with corresponding termination in the indoor intercommunication extension set by stube cable 2, and telephone wire input port CZ2 inserts telephone wire 3, and each indoor telephone set is attempted by port CZ3, and port CZ4 external direct current power supply when needed joins.

When the people presses the corresponding button of intercom on the cell gate downstairs aloud, indoor intercommunication branch chance is sounded, at this moment at will pick up any one telephone set of family, press the # key, telephone set sends touch-tone signal, signal enters the telephone key-press testing circuit through phone push button signalling coupling circuit, send into single-chip microcomputer after the processing, after single-chip microcomputer is confirmed this signal, and under the support of corresponding computer software, charged by the relay J 3 in its output port control control switching circuit, its closing of contact switches to telephone set the state of replying doorbell, simultaneously, relay J 1 in the control hook switch control circuit is charged, and its closing of contact simulates the machine of the carrying state of intercommunication extension set, at this moment, converse through audio signal transmitted in both directions circuit between telephone set and the intercom, the MIC that the audio signal of telephone set is sent into intercom introduces line end, and the audio signal of intercom is sent into telephone set.In the time of need opening the door, press the * key of telephone set, the touch-tone signal that telephone set provides closes through the C10 lotus root, enter the telephone key-press testing circuit, enter single-chip microcomputer again, single-chip microcomputer confirms that the back provides control signal by output, relay J 2 in the control intercom door open button control circuit is charged, its closing of contact provides enabling signal to intercom, and the Stall cell gate is opened.After the telephone set on-hook, the on-hook signal circuit that links to each other with the single-chip microcomputer input provides on-hook signal to single-chip microcomputer, and the single-chip microcomputer output is controlled corresponding relay recovery initial condition.

Claims (1)

1, a kind of control device that makes ordinary telephone set be used to reply the building talkback machine, comprise housing and internal circuit, it is characterized by: internal circuit comprises single-chip microcomputer, be connected with the telephone key-press testing circuit in input of single chip, the telephone key-press testing circuit comprises the touch-tone signal receiving chip U2 that its digital signal end links to each other with the single-chip microcomputer input port, the input end of analog signal of this touch-tone signal chip is connected with the audio frequency transformer T1 that is serially connected between telephone wire input port CZ2 and the telephone set connectivity port CZ3 by elementary, with the phone push button signalling coupling circuit of the secondary capacitor C that is connected in series mutually 13 compositions of audio frequency transformer and the resistance R 15 that links to each other with telephone set connectivity port CZ3 by serial connection, R20 and with resistance R 15, phone power supply and signal coupling circuit that the capacitor C 10 that the tie point of R20 links to each other constitutes, internal circuit also comprises and is used for the port CZ1 that is connected with the intercom extension set, door open button two ends with the intercom extension set, microphone hook switch contact and loudspeaker line end, the MIC line end, the audio frequency line end, power supply and ground wire are by this port introducing device internal circuit, be connected with respectively by triode Q6 in single machine output end, base resistance R17, diode D4, be serially connected with the control switching circuit that the solenoid of the relay J 3 of collector electrode constitutes, by triode Q1, base resistance R1, diode D1, be serially connected with the intercom extension set hook switch control circuit that the solenoid of the relay J 1 of collector electrode constitutes, by triode Q2, base resistance R2, diode D2, be serially connected with the intercom door open button control circuit that the solenoid of the relay J 2 of collector electrode constitutes, wherein relay J 1, the contact of J2 respectively with the line end of the microphone hook switch contact of the intercom extension set of introducing by port CZ1, the line end at door open button two ends links to each other, the contact of relay J 3 is serially connected with the link circuit between telephone wire input port CZ2 and the telephone set connectivity port CZ3, at telephone set connectivity port and the MIC line end of introducing by port CZ1, be connected with between the loudspeaker line end respectively by the capacitor C 2 that is connected in series, potentiometer R27, capacitor C 4, potentiometer R28, capacitor C 9 and the amplifying circuit that contains triode Q4, contain triode Q3, be connected in two or the four line change-over circuits that the anti-side-tone circuit of the potentiometer R27 at triode Q3 collector electrode and emitter two ends constitutes, also be connected with in input of single chip and contain triode Q5, base resistance R16, collector resistance R18 and the phone on-hook signal circuit that links to each other with the single-chip microcomputer input by its collector electrode.

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