CN2402071Y - Automatic telephone paging device - Google Patents
Automatic telephone paging device Download PDFInfo
- Publication number
- CN2402071Y CN2402071Y CN 99234724 CN99234724U CN2402071Y CN 2402071 Y CN2402071 Y CN 2402071Y CN 99234724 CN99234724 CN 99234724 CN 99234724 U CN99234724 U CN 99234724U CN 2402071 Y CN2402071 Y CN 2402071Y
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- circuit
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- tone
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Abstract
The utility model relates to an automatic telephone paging device, which comprises an interface circuit, a bidirectional function two-tone receiving and transmitting circuit, a control circuit and a voice circuit which are respectively connected with an input end of the interface circuit, and a power supply circuit which is connected with an output end of the interface circuit, wherein, the interface circuit is connected with the two-tone receiving and transmitting circuit in the mode of bidirectional connection; the control circuit is respectively connected with the two-tone receiving and transmitting circuit and a memory circuit in the mode of bidirectional connection; the control circuit also controls a speech-sound circuit. When an owner away from a telephone goes out and certain person telephones to the owner, the automatic telephone paging device can automatically carry out paging to a pager of the owner and display the telephone number of the other party, but the other party does not know the pager number of the owner. Thus, the utility model realizes the functions of security, etc.
Description
The utility model belongs to communication technique field, specifically is to use the automatic calling transfer device on a kind of telephone set.
Not other or go out as owner at telephone set, call that nobody connects, if when the other side does not know owner's Pager No, can't in time get in touch with owner, though some telephone set product has such function at present, that is, owner does not exist, voice suggestion when calling " sorry; that owner does not exist, and please leave a message, perhaps; sorry, owner please not exhale * * * number ".The former can not in time get in touch the other side and owner, can delay thing; The latter also needs the other side to pass through paging station to notify from a phone call again, has delayed the time on the one hand, and the call of being notified from a phone call people (owner) in addition number also is disclosed, and can not get maintaining secrecy.
The purpose of this utility model provides a kind of phone automatic calling transfer device, and it is connected with telephone set, can realize automatic paging, as long as dial owner's phone plane No., nobody connects just automatic paging owner's beeper number, and demonstrate the other side's telephone number on beeper to spend the scheduled time.
This purpose realizes with following technical proposal: this phone automatic calling transfer device, it has an interface circuit 1, having respectively of being connected with the input of interface circuit received and the double-tone transmission circuit 2 of sending out two-way function, control circuit 3, the sound circuit 4 of prompt tone is provided to interface circuit, what be connected with its output has a power circuit 5 that each circuit working is provided, wherein interface circuit 1 and double-tone transmission circuit 2 are connected for two-way input, control circuit 3 is respectively two-way input with double-tone transmission circuit 2 and memory circuitry 6 and is connected, the sound circuit 4 in addition that is connected with the control end of control circuit.
This phone automatic calling transfer device is attempted by on the telephone set with telephone wire, when owner was not by telephone set, if there is the people to call, this call switcher can be realized the automatic paging owner, and on beeper, demonstrate the people's that makes a phone call telephone number, owner and the other side are in time got in touch.In addition, the other side does not know owner's Pager No yet, realizes maintaining secrecy.This call switcher has adopted low energy-consumption electronic device, and low power dissipation design does not need additional power source during use; Its volume is little, in light weight, do not need regular maintenance after installing.
Following accompanying drawing has provided embodiment of the present utility model, in conjunction with the accompanying drawings structure of the present utility model and operation principle thereof is further described:
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit working schematic diagram.
As shown in Figure 1: this phone automatic calling transfer device, have a telephone interface circuit 1, having respectively of being connected with the input of interface circuit received the sound circuit 4 that prompt tone is provided with the double-tone transmission circuit 2 of sending out two-way function, control circuit 3, to interface circuit; The output of interface circuit connects the power circuit 5 that operating voltage is provided to each circuit.Wherein interface circuit 1 and double-tone transmission circuit 2 are connected for two-way input, and control circuit 3 is respectively two-way input with double-tone transmission circuit 2 and memory circuitry 6 and is connected, and what be connected with the control end of control circuit also has sound circuit 4.As shown in Figure 2: wherein interface circuit includes: by diode D
1～D
4The bridge rectifier of forming, i.e. polar protective circuit in telephone set; By resistance R
4With capacitor C
2Back in parallel and resistance R
5. voltage-stabiliser tube D
5The ring detecting circuit that serial connection constitutes; By triode Q
1, Q
2Serial connection and external resistance R thereof
1, R
2, R
3The dislodging machine control switch circuit that is constituted; And by amplifying triode Q
3, biasing resistor R
6, R
7, filter capacitor C
3What constitute makes the circuit of enlarging function to touch-tone signal and prompt tone.Wherein ring detecting circuit is attempted by the output of polar protective circuit, and polar protective circuit is followed successively by preface with dislodging machine control switch circuit and amplifying circuit and connects.The double-tone transmission circuit is mainly by chip U
4(MT8880) and the oscillator of chip internal and external crystal X
2, capacitor C
10, C
11The oscillating circuit that constitutes is formed, and its input passes through capacitor C
6, resistance R
11Join with the input of amplifying circuit in the interface circuit.Control circuit is by singlechip chip U
2(PICI6C54) reach oscillator inner and external crystal X with it
1, capacitor C
12, C
13The oscillating circuit that constitutes is formed.Singlechip chip U
2Input and double-tone transmission circuit chip U
4Two-way connection, resistance R is passed through in its output
3The access interface circuit.Described sound circuit is by chip U
3(APT8108) and peripheral resistance R
15, R
16Form.Memory circuitry is by chip U
1(AT93C46) constitute.
This interface circuit provides the interface of telephone wire and call switcher, it comprises dislodging machine controlled function, two or four line conversions etc., prompt tone and double-audio signal amplification are sent on the telephone line, the double-audio signal that phone line is come separates, and deliver to the double-tone receiving circuit, extract bell signal simultaneously, carry out level conversion, be sent to control circuit after the shaping.Power circuit is to extract power supply from telephone wire to use for other circuit.Memory is used for storing and reading user's Pager No, paging station number and ringing number setup parameter, user cipher etc. under the control of single-chip microcomputer.Sound circuit, the deposit operation prompt tone, broadcast capable of circulation is sent to telephone wire through telephony interface under the control of single-chip microcomputer.The dual-tone multifrequency transmission circuit is through telephony interface, under the control of single-chip microcomputer, receives the two-tone signal of being dialled when the user operates, and to the switch number of sending out, and detects the process of succeeding.Control circuit is the operation of continuing that comes control storage with program, and control sound circuit playing alert tones is connected the double-tone transmission circuit and received user's operating command and the work of automatic paging control interface circuit.
The operation principle and the process of this phone automatic calling transfer device: shown in Figure 2, meet two telephone wire TP
1, TP
2, K switch is used for closing or opening call switcher, and piezo-resistance RV is an overvoltage protection, diode D
1～D
4Form polar protective circuit, capacitor C
1Low-pass filtering is disturbed high-frequency signal on the filtering telephone wire.Voltage-stabiliser tube D
5, resistance R
5, R
4, capacitor C
2The ring detecting circuit of forming when not having bell signal, forces down voltage-stabiliser tube D because of telephone wire powers on
5End, otherwise, D
5Reverse breakdown is through resistance R
5, R
4Dividing potential drop, capacitor C
21 second high, 4 seconds low ringing pulse signal of output is to single-chip microcomputer U after the filtering
2Switch triode Q
1And resistance R
1, R
2, switch control triode Q
2, resistance R
3The dislodging machine control circuit of forming.When the control circuit output low level, triode Q, Q
2All end, circuit remains static, when needs receive calls and dial call, and single-chip microcomputer output high level, Q
2, Q
1Conducting.Resistance R
6, R
7, capacitor C
3, amplifying triode Q
3Touch-tone signal and the prompt tone amplifier formed are responsible for amplifying triode Q is coupled on the telephone wire in these two kinds of signals amplifications
3Base stage (output), through capacitor C
4, resistance R
8Be connected to sound circuit, through capacitor C
5, resistance R
9Connect output to the double-tone transceiver.Voltage-stabiliser tube D
6, capacitor C
7Form 5V power circuit and amplifying triode Q
3Series connection is extracted power supply from telephone wire, for double-tone transmission circuit U
4With, voltage-stabiliser tube D
7, D
8, capacitor C
8And resistance R
10Another power circuit of forming is for single-chip microcomputer U
2, memory U
1With.When circuit was in running order, the 5V power supply was through voltage-stabiliser tube D
7Power supply is provided for this power circuit, electric current is bigger.When circuit remains static, because triode Q
1, Q
2End, the 5V power circuit does not have electricity, through resistance R
10Power supply is provided for this power circuit, so just guarantees not cut off the power supply on the single-chip microcomputer always.Single-chip microcomputer adopts the low-power consumption type, when inactive state is in the discontinuous operation state, makes the single-chip microcomputer operating current of inactive state have only about 3 μ A, so resistance R
10Resistance is very big, and the complete machine operating current is to meet the phone works current standard less than 5 μ A under the inactive state.
The course of work of this call switcher: work as TP
1, TP
2Telephone line is inserted at two ends, and when K switch was closed, the 48V power supply on the telephone wire was through diode D
1～D
4Polar protective circuit, resistance R
10To voltage-stabiliser tube D
8And capacitor C
8The power circuit that constitutes, single chip machine controlling circuit U at this moment
2Power up, and the beginning discontinuous operation, when the ringing current signal is arranged on the telephone wire, through voltage-stabiliser tube D
5, resistance R
5, R
4, capacitor C
2The ring detecting circuit that constitutes is sent to single-chip microcomputer U
2, single-chip microcomputer is counted it, and when reaching set point number, single-chip microcomputer output high level is through resistance R
3, make triode Q
2, Q
1The dislodging machine control switch circuit turn-on that constitutes, amplifier tube Q
3Start working, the 5V power circuit has electricity, to double-tone transmission circuit U
4Power up, single-chip microcomputer output high level is to sound circuit U
3Power up, emit prompt tone, through triode Q
3Be sent to telephone wire after the amplification, after the other side hears prompt tone, the telephone number of input oneself on telephone set.Single-chip microcomputer U
2Begin from double-tone transmission circuit U
4In collect the digits.During end, single-chip microcomputer U
2Output low level makes triode Q in the control switch circuit
2, Q
1End.Single-chip microcomputer output high level makes triode Q after 1 second
2, Q
1Conducting, and single-chip microcomputer U
2From memory U
1In take out beeper and paging station number, through double-tone transmitting-receiving phone U
4Mail to telephone line.Send out and number to finish, wait for connection signal again, receive the signal tone of connection after, the telephone number that the other side is stayed is through double-tone transmission circuit U again
4Send, afterwards, single-chip microcomputer U
2Output low level again, triode Q
2, Q
1End, one time process finishes.
Claims (5)
1, a kind of phone automatic calling transfer device, it has an interface circuit (1), it is characterized in that receiving and the double-tone transmission circuit (2) of sending out two-way function the having respectively of input connection of interface circuit, control circuit (3), the sound circuit (4) of prompt tone is provided to interface circuit, be serially connected with the power circuit (5) that each circuit voltage is provided at its output, wherein interface circuit is connected for two-way input with double-tone transmission circuit (2), control circuit (3) is respectively two-way input with double-tone transmission circuit (2) with memory circuitry (6) and is connected, the sound circuit (4) in addition that is connected with the control end of control circuit.
2, phone automatic calling transfer device according to claim 1 is characterized in that described interface circuit (1) includes by diode D
1～D
4The bridge rectifier that constitutes, i.e. polar protective circuit in the telephone set; Resistance R
4With capacitor C
2Back in parallel and resistance R
5, voltage-stabiliser tube D
5The ring detecting circuit that series connection constitutes; Be connected with polar protective circuit by triode Q
1, Q
2Serial connection and external resistance R thereof
1, R
2, R
3The dislodging machine control switch circuit that constitutes; And by amplifying triode Q
3, biasing resistor R
6, R
7And filter capacitor C
3The double-audio signal that constitutes and the amplifying circuit of prompt tone, wherein ring detecting circuit is attempted by the output of polar protective circuit, and polar protective circuit, dislodging machine control switch circuit, amplifying circuit are followed successively by the preface serial connection.
3, phone automatic calling transfer device according to claim 1 is characterized in that double-tone transmission circuit (2) is mainly by chip U
4(MT8880), and and chip U
4Inner oscillator and external crystal X
2, capacitor C
10, C
11The oscillating circuit that constitutes is formed.
4, phone automatic calling transfer device according to claim 1 is characterized in that control circuit (3) is by single-chip microcomputer U
2(PICI6C54) oscillator and the external crystal X inner with it
1, capacitor C
12, C
13The oscillating circuit that constitutes is formed.
5, according to claim 1,2,3 or 4 described phone automatic calling transfer devices, it is characterized in that described sound circuit (4) is by chip U
3(APT8108) and resistance R
15, R
16Peripheral circuit is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99234724 CN2402071Y (en) | 1999-06-23 | 1999-06-23 | Automatic telephone paging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99234724 CN2402071Y (en) | 1999-06-23 | 1999-06-23 | Automatic telephone paging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2402071Y true CN2402071Y (en) | 2000-10-18 |
Family
ID=34022825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99234724 Expired - Fee Related CN2402071Y (en) | 1999-06-23 | 1999-06-23 | Automatic telephone paging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2402071Y (en) |
-
1999
- 1999-06-23 CN CN 99234724 patent/CN2402071Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |