CN2708573Y - Analog telephone module - Google Patents

Abstract

The utility model belongs to the telephone communication, in particular to an analog telephone module used for calling users. The utility model is one analog telephone module which is characterized in that the utility model comprises a filter network, an isolating circuit, an analogous pick-up circuit, a modulator, a ringing current testing circuit, a dial tone testing circuit, a dialer, a line status detection, a clock oscillation circuit, a channel control circuit, and a controller. The utility model with small volume can help the telephone complete the function of information process and automatic dialing by the computer of the utility model, which is convenient for the frequent contact among people and the telephone use.

Description

Analog telephone module

Technical field

The utility model belongs to telephone communication, relates in particular to calling party's analog telephone module.

Background technology

Need to make a phone call dialing, this is that people know already and think normal thing in the actual life, and when people will often call, dialing had become a loaded down with trivial details thing undoubtedly, the situation that runs into busy tone or ring unanswered also will redial, and makes troubles to live and work. Simultaneously for recording phone number, this constantly updates to electronic notebook people from original papery number, Shortcomings parts all, and the papery number originally exists capacity little and be difficult to the shortcoming such as retrieval, and electronic notebook exists input difficult. In today that computer is popularized day by day, computer does not participate in daily telephonic communication contact, and this is undoubtedly a kind of wasting of resources.

The utility model purpose is to overcome above-mentioned weak point of the prior art, and a kind of analog telephone module that is connected between computer and the telephone set is provided.

The technical scheme that the utility model adopts is a kind of analog telephone module, its structural feature is that it includes filter network, buffer circuit, imitate pick machine circuit, demodulator, bell flowing detecting circuit, dialing tone testing circuit, dialer, line status detection, clock oscillation circuit, channel control circuit, controller, filter network is connected successively with bell flowing detecting circuit, channel control circuit, controller, buffer circuit is connected with demodulator, dialing tone testing circuit simultaneously, the another port of demodulator, dialing tone testing circuit is connected with controller, imitate pick machine circuit, line status detect, controller connects successively, controller, dialer, imitate pick machine circuit connect successively, and demodulator, bell flowing detecting circuit, dialer respectively have a port and clock oscillation circuit to join.

Because analog telephone module has been arranged, just telephone set and computer can be coupled together, carry out dial-up operation by the dialing instruction that computer sends, will dial simultaneously result and line status are reported to computer. Utilize the inputting efficiently of computer, output and process information speed and huge capacity to help telephone set and finish information processing and automatic dialing, greatly facilitate the frequent contact between the people.

For many years, owing to phone brings great convenience to the interchange between the people, and accepted, tolerated that its needs present situation of manual dialing. The utility model has overcome the inertia that this thinking set causes, and has creatively increased an analog telephone module telephone set is connected with computer, and produced splendid technique effect.

The utility model can join with the circuit of telephone set, places in the telephone set and makes one with telephone set. Specifically filter network, buffer circuit, imitate pick machine circuit and communication line are joined, controller and standard computer interface chip join.

The utility model can join with the circuit of computer, places in the computer and makes one with computer. Specifically have a standard traffic line interface and filter network, buffer circuit, imitate pick machine circuit to join, the PC of controller and computer joins.

The utility model also can increase standard computer interface chip, standard traffic line interface simultaneously, wherein an end of standard traffic line interface and filter network, buffer circuit, imitate pick machine circuit join, filter network is connected successively with bell flowing detecting circuit, channel control circuit, controller, standard computer interface chip, install a housing additional in its outside, housing has standard computer interface and standard traffic line interface outward, becomes the external piece between computer and the telephone set.

Make one or during for the external piece of computer and telephone set, also can connect a memory and power supply at controller when the utility model and phone, to realize that computer can show incoming call once starting shooting, make things convenient for information processing. This is because telephone set belongs to normal opening apparatus, and belonging to the people, computer controls switching device, therefore increasing memory in analog telephone module also can store the incoming call that does not connect first, in case computer is opened, memory passes through the controller feedback to the computer with the missed call of storage, computer is processed caller ID, and medium as depositing address list in newly sending a telegram here, Portable computer is the contact between the phone also.

The purpose of this utility model can be able to specific implementation by following approach.

Filter network is the RC filter network, demodulator is HT9170, bell flowing detecting circuit is HT9032, and the dialing tone testing circuit is LM567, and dialer is HT9200B, line status detects and is PC817, clock oscillation circuit is CD4069, and channel control circuit is CD4011, and controller is AT89C51, the standard interface chip is RS232, and memory is AT24C08.

Because the electronic component of existing same type is extremely many, can't enumerate one by one.

The utility model has the advantage of that volume is little, can help telephone set to finish information processing and automatic dialing by the utility model computer, greatly facilitate the frequent contact between the people, use phone convenient.

Description of drawings

Fig. 1 is the utility model functional-block diagram

Fig. 2 is the functional-block diagram that the utility model is made external piece

Fig. 3 is the utility model workflow diagram

Fig. 4 is electrical schematic diagram of the present utility model

Wherein: 1 filter network, 2 buffer circuits, 3 imitate pick machine circuit, 4 demodulators, 5 bell flowing detecting circuits, 6 dialing tone testing circuits, 7 dialers, 8 line status detect 9 clock oscillation circuits, 10 channel control circuits, 11 controllers, 12 standard computer interface chips, 13 standard traffic line interfaces, 14 memories, 15 PC

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail

As shown in Figure 1, a kind of analog telephone module, it includes filter network 1, buffer circuit 2, imitate pick machine circuit 3, demodulator 4, bell flowing detecting circuit 5, dialing tone testing circuit 6, dialer 7, line status detection 8, clock oscillation circuit 9, channel control circuit 10, controller 11, filter network 1 is connected successively with bell flowing detecting circuit 5, channel control circuit 10, controller 11, buffer circuit 2 is electrically connected with demodulator 4, dialing tone testing circuit 6 simultaneously, the another port of demodulator 4, dialing tone testing circuit 6 is connected with controller 11, imitate pick machine circuit 3, line status detection 8, controller 11 connect successively, controller 11, dialer 7, imitate pick machine circuit 3 connect successively, and demodulator 4, bell flowing detecting circuit 5, dialer 7 respectively have a port and clock oscillation circuit 9 to join. Wherein: filter network 1 is the RC filter network, demodulator 4 is HT9170, bell flowing detecting circuit 5 is HT9032, dialing tone testing circuit 6 is LM567, dialer 7 is HT9200B, and it is PC817 that line status detects 8, and clock oscillation circuit 9 is CD4069, channel control circuit 10 is CD4011, and controller 11 is AT89C51.

As shown in Figure 2, a kind of analog telephone module, except foregoing circuit, also include standard computer interface chip 12, standard traffic line interface 13, standard traffic line interface 13 joins with filter network 1, buffer circuit 2, imitate pick machine circuit 3, filter network 1 is connected successively with bell flowing detecting circuit 5, channel control circuit 10, controller 11, standard computer interface chip 12, and the standard interface chip is RS232, and standard interface chip RS232 and PC15 join. It is identical with upper example that all the other do not state part.

As shown in Figure 3, Figure 4, the course of work of the present utility model is:

One, the foundation of analog telephone module and PC communication:

Press the PC interface requirement, analog telephone module is by RS232 integrated circuit and electric wire connecting junction, and Special-purpose connecting line and AT89C51 consist of the hardware interface support jointly, and carries out communication, data information by this interface and PC15.

Two, auto dialing

1, after analog telephone module receives the instruction (such as " dialing ") of PC transmission, by the I of AT89C51 O line traffic control HT9200B integrated circuit send the dual tone phone number to dialing drive circuit (mainly being consisted of by isolating transformer and C5551 triode), and transmit this number by the wire communication network;

2, after Outgoing Number, analog telephone module begins to detect the state of communication line, to judge whether caller and callee enter talking state, whether on-hook of caller and callee, calling party's off-hook etc. whether in callee's off-hook situation, this testing is served as jointly by LM567 and PC817 (photoelectrical coupler);

3, analog telephone module sends information and the interprocess communication of current communication line to PC by AT89C51.

Three, incoming call:

1, detect communication line by HT9032 and come electricity condition, when bell signal appearred in circuit, HT9032 passed to AT89C51 by corresponding pin mutually with this information;

2, detect incoming information by HT9032 and carry out the FSK demodulation, and the data message after the demodulation is sent to PC by the AT89C51 verification;

3, after sending data to PC, analog telephone module begins to detect the state of communication line, and purpose and detection means are with second section the 2nd, and this testing is served as jointly by LM567 and PC817 (photoelectrical coupler);

Four, caller ID storage

Caller ID by the HT9032 demodulation after by AT89C51 I the O pin, in the mode of serial communication number is stored among the AT24C04 (EEPROM) sequentially, PC can carry out read-write operation to the AT24C04 chip by serial line interface and AT89C51 communication.

Demodulator 4HT9032 adopts the encapsulation of dual-in-line 16 pin, 1:TIP; 2:2RING--is connected to respectively the two ends of telephone wire. During work, TIP, RING should be connected in series respectively with the telephone wire exit capacitor of 0.01 μ F; 200K resistance is to realize the DC-isolation between the telephone wire; The fsk signal demodulation.

3:RDET1--detects the ring energy and starts oscillator and bell flowing detecting circuit by attenuation network;

The 4:LBIN---low-voltage detects input;

5:RDET2---is coupled to bell flowing detecting circuit by attenuation network with bell signal;

The external RC network of this end of 6:RTIME---, therefore, the voltage of this end between the peak value of ringing signal is lower than 2.2 volts. Whether its control inside powers on and activates local circuit and send a telegram here effective with judgement;

When this end of 7:PDWN---was high level, chip was in power-down mode; During for low level, chip is activated;

8:VSS---is the ground of power supply;

The external 3.58MHz crystal oscillator of 9:X1,10:X2:----or ceramic resonator. X1 inputs oscillator signal.

When 11:LBPUT----is lower than internal reference voltage when the voltage of LBIN end, output high level, otherwise output low level.

12:----RDET when detecting effective bell signal, this port step-down. This pin can power on when linking to each other with the PDWN pin automatically.

During the effective carrier frequency of 13:CDET----on detecting telephone wire, this port step-down. The built-in chip type delay circuit allows the instantaneous skew of carrier frequency. This pin links to each other with the PDWN pin and can be used for automatically powering on.

When 14:DOUT----is in low level when the CDET pin, this end output restituted signal, data flow comprises the marking signal of 1,0 and 150ms alternately, marking signal is positioned at the front end of data. At All Other Times, port keeps high-impedance state.

Chip internal is comprised of clock generation circuit, ring detecting circuit, power-down control circuit, undervoltage detection circuit and BELL 202 FSK demodulator circuits. The effect of ring detecting circuit is the bell signal that detects on the telephone line, and when detecting effective ringing signal, 12 pin output low levels of chip trigger clock generation circuit and power-down control circuit simultaneously, thereby make whole chip in running order. Then, follow BELL 202 fsk signals of ringing-current closely from 1, the 2 pin input of chip, through amplifier, bandpass filter, demodulator and valid data testing circuit, dialing number information is exported from 14 pin.

15：NC

16:VDD----is positive supply. + 5V

Five, power supply is supplied with

For the storage of convenient use and missed call, analog telephone module adopts 5V direct current supply, and the analog telephone module quiescent current is less than or equal to 32 milliamperes, and maximum current is no more than 100 milliamperes.

Six, connecting line

Analog telephone module possesses 1 of standard RS2329 pin D type serial ports wiring, 1 of standard RJ45 telephone cable, 1 of 5V commutator transformer.

Seven, the peripheral devices relevant with above-mentioned main devices is omitted here such as resistance, electric capacity etc.

Eight, LM567 phase-locked loop circuit effect: 450HZ detects, and detects dialing tone, busy tone, ring-back etc.

1.CD4011 42 input nand gates. Effect: switch the reception serial signal and derive from: the order that the incoming call number of telecommunication bureau or PC come. Logic: Y-=AB

3-＝1·2；6-＝4·5；8-＝9·10；11-＝12·13；7＝GND；14＝VCC

2.CD4069 hex inverter. Effect: produce work clock with 3579545 crystal; For HT9200, HT9170, HT9032.

Logic: Y-=A

2-＝1；4-＝3；6-＝5；8-＝9；10-＝11；12-＝13；7＝GND；14＝VCC

3.AT24C08 effect: memory, storage incoming call number.

4.RS232 effect: the logical signal of 0V--5V is become+the RS232 logical signal of 10V---10V.

5.AT89C5 effect: cpu controller.

Pin	Label	Effect	Pin	Label	Effect
							1	P1·0	HT9170 DTMF inputs D0	40	VCC	Power supply+5V
2	P1·1	HT9170 DTMF inputs D1	39	P0·0	HT9170 DTMF input is high effectively to be detected
						3	P1·2	HT9170 DTMF inputs D2	38	P0·1	Machine control (relay) is proposed in this locality
4	P1·3	HT9170 DTMF inputs D3	37	P0·2	Switch the PC/ caller identification. PC=1
						5	P1·4		36	P0·3	The HT9200 dialing is effectively low. Output
6	P1·5		35	P0·4	Activate the HT9032 signal. Output
						7	P1·6		34	P0·5	Local (people) carries machine testing.

8	P1·7		33	P0·6
						9	RST	Reset		32	P0·7	LED power source prompting LED4
10	P3·0	RXD receives serial information	31	EA-/VDD	Meet power supply+5V.
						11	P3·1	TXD sends serial information	30	ALE/PR   OG
12	P3·2	INT0 detects ringing tone	29	PSEN-
						13	P3·3	INT1 detects the DTMF caller identification	28	P2·7	Serial storage AT24C08-5
14	P3·4	T0 detects 450HZ.	27	P2·6	Serial storage AT24C08-6
						15	P3·5	T1	26	P2·5
16	P3·6	WR-	25	P2·4
						17	P3·7	The RD-antipole detects	24	P2·3	Dialer HT9200 dialing-D3
18	XTL1	Crystal oscillator 110592MHZ	23	P2·2	Dialer HT9200 dialing-D2
						19	XTL2	Crystal oscillator 110592MHZ	22	P2·1	Dialer HT9200 dialing-D1
20	VSS	Ground		21	P2·0							Dialer HT9200 dialing-D0

Claims (8)

1, a kind of analog telephone module, it is characterized in that it includes filter network (1), buffer circuit (2), imitate pick machine circuit (3), demodulator (4), bell flowing detecting circuit (5), dialing tone testing circuit (6), dialer (7), line status detects (8), clock oscillation circuit (9), channel control circuit (10), controller (11), filter network (1) and bell flowing detecting circuit (5), channel control circuit (10), controller (11) connects successively, buffer circuit (2) while and demodulator (4), dialing tone testing circuit (6) is electrically connected, demodulator (4), the another port of dialing tone testing circuit (6) is connected with controller (11), imitate pick machine circuit (3), line status detects (8), controller (11) connects successively, controller (11), dialer (7), imitate pick machine circuit (3) connects successively, demodulator (4), bell flowing detecting circuit (5), dialer (7) respectively has a port and clock oscillation circuit (9) to join.

2, analog telephone module according to claim 1, it is characterized in that, have a standard traffic line interface (13) and filter network (1), buffer circuit (2), imitate pick machine circuit (3) to join, controller (11) joins with PC.

3, analog telephone module according to claim 1, it is characterized in that, filter network (1), buffer circuit (2), imitate pick machine circuit (3) join with communication line, and controller (11) joins with standard computer interface chip (12).

4, analog telephone module according to claim 1, it is characterized in that, also include standard computer interface chip (12), standard traffic line interface (13), one end of standard traffic line interface (13) and filter network (1), buffer circuit (2), imitate pick machine circuit (3) join, and filter network (1) is connected successively with an end of bell flowing detecting circuit (5), channel control circuit (10), controller (11), standard computer interface chip (12).

5, according to claim 2 or 4 described analog telephone modules, it is characterized in that also having a memory (14) to be electrically connected with controller (11).

6, analog telephone module according to claim 1, it is characterized in that, filter network (1) is the RC filter network, and demodulator (4) is HT9170, and bell flowing detecting circuit (5) is HT9032, dialing tone testing circuit (6) is LM567, dialer (7) is HT9200B, and it is PC817 that line status detects (8), and clock oscillation circuit (9) is CD4069, channel control circuit (10) is CD4011, and controller (11) is AT89C51.

7, according to claim 3 or 4 described analog telephone modules, it is characterized in that the standard interface chip is RS232.

8, analog telephone module according to claim 5 is characterized in that, memory (14) adopts AT24C08.

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