CN201854324U - Novel automatic amplification controller for telephone - Google Patents

Abstract

The utility model discloses a novel automatic amplification controller for a telephone, which is provided with a central processing unit, a ringing detection circuit, a busy tone detection circuit, a call circuit, a voice prompt circuit and an audio power amplifier circuit, wherein the ringing detection circuit, the busy tone detection circuit and the call circuit are respectively and electrically connected with a telephone circuit; a negative voltage circuit of the telephone circuit is connected with a relay in series; the relay is connected with a potentiometer in parallel; a return contact of the central processing unit is connected with a capacitor which is connected to a +5V power supply of power supplies through a normally-closed contact of the relay; and a resistor is connected with a normally-open contact of the relay in series and then is connected to the capacitor in parallel. By using the amplification controller, the traditional telephone set extends the functions of amplifying and calling, the automatic amplification and call can be achieved when no person receives and the amplification function can be automatically closed when the telephone is received during amplification; and the utility model solves the problem that general telephone sets used for flow production posts and coal metallurgy chemistry in industrial and mining enterprises, other large-scale operation places, remote open posts and the like are inconvenient to receive.

Description

A kind of novel phone controller that amplifies automatically

Technical field

The utility model belongs to communication technical field, is specifically related to a kind of novel phone controller that amplifies automatically.

Background technology

Telephone set in the telephone system of generally using can not satisfy the use needs in some specific production operation place at present, as large-scale operation place, remote spacious posies etc. such as the mobile production station of industrial and mining enterprises, coal chemical metallurgies, when phone is squeezed into, because site environment is noisy or spaciousness and telephone bell is lighter comparatively, often owing to do not hear that the tinkle of bells causes ring unanswered's situation, mistakes and causes delay; In addition, for some unattended places, cooperate video monitoring can reach the warning effect of propagandaing directed to communicate.Publication number CN200950616 discloses a kind of phone controller that amplifies automatically open day on September 19th, 2007, can realize the automatic amplifying call of telephone set, do not influence phone that the original call machine the uses controller that amplifies automatically again, but it exists when receiving calls, the controller that amplifies is still in running order, make that speech content is also amplified away by power amplifier in the phone, use inconvenience.

Summary of the invention

For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of ordinary telephone set conversation that can amplify automatically that makes when the ring unanswered, when amplifying, receive calls, amplify and close automatically, do not influence novel phone that the original call machine the uses controller that amplifies automatically.

For achieving the above object, the technical solution adopted in the utility model is: this novel phone controller that amplifies automatically, has CPU, ring detecting circuit, the busy tone testing circuit, speaking circuit, voice warning circuit and audio power amplifier circuit, described ring detecting circuit, busy tone testing circuit and speaking circuit are electrically connected with telephone line respectively, it is characterized in that: the positive voltage circuit of described telephone line is in series with relay, a relay coil potentiometer in parallel, the reset contact of described CPU is connected with a capacitor, the normally-closed contact of capacitor by relay is connected on power supply+5V power supply, and a resistance string is connected in parallel on the capacitor after succeeding the normally opened contact of electrical equipment.

Adopt the beneficial effect of technique scheme: this novel phone amplifies automatically and is provided with control program in the CPU of controller, is used to control each circuit unit work; Ring detecting circuit is used for ringing signal to circuit and detects and give CPU with detection signal; The busy tone testing circuit is used for the busy-back signal of detection line and gives CPU with detection signal; Speaking circuit is used for loud speaker or phone loop are handled and outputed to the voice signal of circuit; Voice warning circuit is used for the pre-stored voice cue, according to the instruction of CPU the voice suggestion signal is sent into speaking circuit; Audio power amplifying circuit is used for the audio signal of speaking circuit output is carried out power amplification, and the signal after the amplification is delivered to loud speaker.Reset contact in CPU is connected with a capacitor, the normally-closed contact of capacitor by relay be connected power supply+the 5V power supply on, a resistance string is connected in parallel on the capacitor after succeeding the normally opened contact of electrical equipment.When the controller that amplifies is not at ordinary times worked, do not have electric current to flow through in the relay coil, relay normally closed connection 5V power supply, CPU is in the stand-by operation state.Come as ringing pulse, when the controller that amplifies detects ring unanswered's phone works, just have the electric current relay coil of flowing through, the actuating of relay at this moment, the normally opened contact closure of relay has made capacitor directly discharge by resistance.If at this moment the someone receives calls, the electric current of relay coil of flowing through reduces, relay recovery, the normally-closed contact closure of relay, the 5V power supply charges to capacitor, cause that the CPU single-chip microcomputer resets, processor is in holding state, and the speech in the telephone set at this moment just can not be emitted by audio power amplifying circuit.Relay is parallel with adjustable potentiometer, reliable reset when regulator potentiometer can make relay answer the call outside having.This phone amplifies controller automatically under the prerequisite that does not influence original phone use, expanded the amplifying call function, can solve ordinary telephone sets such as large-scale operation place, remote spacious post such as mobile production station such as industrial and mining enterprises, coal chemical metallurgy preferably and answer an inconvenient difficult problem.

Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.

Description of drawings

Fig. 1 circuit connection diagram of the present utility model.

Fig. 2 is the utility model ring detecting circuit schematic diagram.

Fig. 3 is the utility model busy tone testing circuit schematic diagram.

Fig. 4 is the utility model speaking circuit schematic diagram.

Fig. 5 is the utility model voice warning circuit schematic diagram.

Embodiment

The controller that amplifies automatically of novel phone as shown in Figure 1 can be connected with the circuit of two phone TEL1, TEL2 simultaneously.Have housing, CPU 1, ring detecting circuit 2, busy tone testing circuit 3, speaking circuit 4, voice warning circuit 5 and audio power amplifier circuit 6 and form, described ring detecting circuit 2, busy tone testing circuit 3 and speaking circuit 4 are electrically connected with telephone line respectively.Wherein CPU 1 adopts the ATMEL89C51 single-chip microcomputer, is provided with control program in it, is used to control each circuit unit work; Ring detecting circuit 2 ₁With 2 ₂Referring to Fig. 2, adopt identical known line port ring detecting circuit, its input A1, A2 respectively with phone+, a circuit is connected, output terminals A 3 connects the P1.1 and the P1.2 port of CPU respectively, is used for ringing signal to circuit and detects and give CPU 1 with detection signal; Busy tone testing circuit 3 is referring to Fig. 3, standard peripheral circuit when adopting integrated phase-locked loop decoder LM567 and being used for speech detection is formed, the working end contact contact of its input B1 by relay J 1, J2 respectively with phone TEL1, TEL2+circuit is connected, is used for the busy-back signal of detection line and gives CPU 1 with detection signal; Speaking circuit 4 is referring to Fig. 4, adopt general telephone communicating circuit, its E1, the E2 end is by relay J 1, the contact, contact, working end of J2 respectively with phone TEL1, TEL+, a circuit is connected, E3, E4 port connect the input of audio power amplifier circuit 6, are used for audio power amplifier circuit 6 or phone loop are handled and outputed to the voice signal of circuit; Voice warning circuit 5 is referring to Fig. 5, adopting general is the audio record circuit of core with chip I SD1800P, its input PLAYL port connects the P1.7 port of CPU 1, output a, b connect port a, the b in the speaking circuit respectively, be used for the pre-stored voice cue, the voice suggestion signal sent into speaking circuit 4 according to the instruction of CPU 1; Audio power amplifier circuit 6 adopts the universal audio amplifirer, and its input connects E3, the E4 port of speaking circuit 4, and output connects loud speaker, is used for the audio signal of speaking circuit output is carried out power amplification, and the signal after the amplification is delivered to loud speaker.Relay J 1, J2, J3 are referring to Fig. 1, wherein J1, J2 are respectively applied for switch phone TEL1, TEL2 talking path, J3 is used for the electric power loop of switch audio power amplifier circuit 6, the control end coil of relay J 1, J2, J3 is respectively by triode T1, T2, T3 and R1, R2, R3, be connected with P1.3, P1.4, the P1.6 port of CPU 1, be used for controlling the folding of each contact, relay working end according to the control signal of CPU 1; BM1 is that ringing number is provided with toggle switch among Fig. 1, connects P2.0, the P2.1 port of CPU 1, is used for being provided with connecting phone automatically behind the ring how many times; BM2 is for forcing the on-hook time that toggle switch is set, the P2.2, the P2.3 port that connect CPU 1, the time is hung up in the pressure that is used to be provided with behind closing of the circuit, on-hook or malicious call etc. make phone the line is busy always to prevent that the calling party from forgetting, when the time arrives set point, CPU 1 can the output control signal discharge each relay, cuts off line loop and amplifier power supply.When phone TEL1 or TEL2 have people's incoming call, ring detecting circuit 21 or 22 detects ringing number and detection signal is imported CPU 1, when arriving still ring unanswered of set point number, the CPU 1 output signal control relay J1 or the J2 closing of contact, promptly connect the corresponding phone loop, the voice warning circuit 5 of output signal control is simultaneously offered the calling party with the information of voice prompt that prestores by speaking circuit 4.Afterwards if caller is permanent, the power supply of audio power amplifying circuit 6 is connected in contact, contact, closing relay J3 working end then, calling party's sound is gone out by loudspeaker plays, thereby realized the phone amplifying call.When multiplex telephony inserts, detecting the preferential access that the ringing pulse number of times arrives earlier set point, other mask.The positive voltage circuit of telephone line TEL1 is in series with relay J 0 as shown in Figure 1, the adjustable potentiometer WO of relay J 0 a relay contact response regulation in parallel, the reset contact RST of described CPU 1 is connected with a capacitor CO, and capacitor CO is by the normally-closed contact K1 of relay _J0Be connected power supply+the 5V power supply on, the normally opened contact K2 of resistance R 0 serial connection relay _J0After be connected in parallel on the capacitor CO.When the controller that amplifies is not at ordinary times worked, do not have electric current to flow through among the relay coil J0, relay normally-closed contact K1 _J0Connect the 5V power supply, CPU 1 is in the stand-by operation state.Come as ringing pulse, when the controller that amplifies detects ring unanswered's phone works, just have the electric current relay coil J0 that flows through, the actuating of relay at this moment, the normally opened contact K2 of relay _J0Closure has made electric capacity CO directly discharge by resistance.If at this moment the someone receives calls, the electric current of the relay coil J0 that flows through reduces, relay recovery, the normally-closed contact K1 of relay _J0Closure, the 5V power supply causes that to capacitor C O charging the single-chip microcomputer of CPU 1 resets, and processor is in holding state, and the speech in the telephone set at this moment just can not be emitted by audio power amplifying circuit.

Claims (1)

1. novel phone controller that amplifies automatically, has CPU, ring detecting circuit, the busy tone testing circuit, speaking circuit, voice warning circuit and audio power amplifier circuit, described ring detecting circuit, busy tone testing circuit and speaking circuit are electrically connected with telephone line respectively, it is characterized in that: the positive voltage circuit of described telephone line is in series with relay, a relay coil potentiometer in parallel, the reset contact of described CPU is connected with a capacitor, the normally-closed contact of capacitor by relay is connected on power supply+5V power supply, and a resistance string is connected in parallel on the capacitor after succeeding the normally opened contact of electrical equipment.

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