CN2378888Y

CN2378888Y - Multifunctional telephone network alarm

Info

Publication number: CN2378888Y
Application number: CN 99223785
Authority: CN
Inventors: 张凤爽; 张亚辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-14
Filing date: 1999-05-14
Publication date: 2000-05-17
Anticipated expiration: 2009-05-14

Abstract

The utility model discloses a multifunctional telephone network alarm, it includes central processing circuit, telephone line and telephone interface circuit, telephone line broken string detection circuitry, on-the-spot warning circuit, battery powered and under-voltage detection circuit, adopt low-power consumption CMOS singlechip in central processing circuit, its interface circuit and functional circuit are low-power consumption chip and technique, and telephone interface part adopts the light isolator spare, can detect the user off-hook, and battery powered and under-voltage detection circuit adopt voltage transformation and voltage detection integrated circuit, provides different supply voltage, realizes under-voltage detection simultaneously. The multifunctional electric water heater has the advantages of multiple functions, small volume, convenient use, low power consumption, low price and wide application, and is powered by a battery.

Description

Multi-function telephones network alarming device

The utility model relates to micro-computer technology and telephone communication technology, and specifically a kind of being applicable in the automatic warning net as the warning node can be reported to the police and the autoalarm of remote control by public phone network.

At present, existing warning device such as telephone automatic alarm device, multi-functional autoalarm etc., the microcomputers that adopt are controlled more, function is more complete, can detect detector signal and report to the police automatically by public phone network, but there is shortcoming in various degree in these products: 1. do not consider that the offender destroys from the outside these products in the design, as cut off mains-supplied, phone has been plucked, or simply cut telephone lines, made alarm ineffective; 2. these products adopt button to set up defences to withdraw a garrison operation more, and method is single, make the user feel inconvenience sometimes; 3. do not have ring detecting circuit, can't realize distant control function; 4. these products are selected for use at device, are not all done low-power consumption when circuit design and software programming and consider, make that the product overall power is bigger, therefore can only use mains-supplied, even battery is housed also only as auxiliary power supply, so also cause the product cost height, volume is big: 5. complex structure, and small product size is bigger, control switch is more, and installation and use are all not too convenient; 6. do not have the telephone line of detection function, report to the police when being cut off as telephone wire, these products do not have concrete treatment measures.

The purpose of this utility model is to overcome the existing above-mentioned shortcoming of like product, provide a kind of diverse in function, reasonable in design, easy to use, volume is little, low in energy consumption, price is honest and clean, widely used multi-function telephones network alarming device.

To achieve these goals, the technical solution of the utility model is: have central processing circuit, telephone wire and telephone interface circuit, dual-tone multifrequency collects the digits and sends out number and the busy tone testing circuit, the recording playback circuit, ring detecting circuit, the telephone wire break detection circuit, the prober interface circuit, the interface circuit of withdrawing a garrison of setting up defences, the onsite alarming circuit, powered battery and undervoltage detection circuit, it is characterized in that: wherein have the prober interface circuit of detector and have the withdraw a garrison output signal of interface circuit of setting up defences of button and deliver to central processing circuit, described dual-tone multifrequency collects the digits to send out and number links to each other with central processing circuit with busy tone testing circuit one end, the input signal of onsite alarming circuit is provided by central processing circuit, before described telephone wire and telephone interface circuit are serially connected in subsets, and collect the digits with dual-tone multifrequency respectively and send out number and the busy tone testing circuit, the recording playback circuit, central processing circuit links to each other, the input signal of ring detecting circuit and telephone wire break detection circuit is respectively from telephone wire and telephone interface circuit, and the output signal of powered battery and undervoltage detection circuit is the input signal of central processing circuit;

Described central processing circuit is by single-chip microcomputer U1, expansion input interface U2, memory device U3, monostable device U4, with gate device U5, the first crystal oscillator XT1, resistance R 1～R3 and capacitor C 1～C6 form, wherein single-chip microcomputer U1 respectively with expansion input interface U2, memory device U3, monostable device U4 with link to each other with gate device U5, described expansion input interface U2 respectively with 2 pin of memory device U3, dual-tone multifrequency collect the digits send out number with the busy tone testing circuit in impulse sender spare U6, with gate device U5, the prober interface circuit communicates, described monostable device U4 and reset circuit thereof be connected with gate device U5, described and gate device U5 respectively with ring detecting circuit, the prober interface circuit, the interface circuit of withdrawing a garrison of setting up defences, onsite alarming circuit and telephone interface part, battery voltage supply and undervoltage detection circuit signal communication;

Described telephone wire and telephone interface circuit comprise telephone line interface and telephone interface two parts, wherein the telephone interface part is made up of subsets on-off control unit and detection subsets off hook state unit, the subsets on-off control unit is held from subsets interface TELP, its output signal is delivered to central processing circuit, subsets interface TELP end is connected as a single entity with telephone line interface RING end, detect subsets off hook state units in series between telephone line interface TIP end and relay R EL, and signal is delivered to central processing circuit;

Described powered battery and undervoltage detection circuit are made up of battery pack B1, cell voltage boosting unit and under-voltage detecting unit, described cell voltage boosting unit is in parallel with battery pack, the output control signal that boosts to 5V is connected with the telephone interface circuit with telephone wire, the control signal that described under-voltage detecting unit output signal is a central processing circuit;

4 pin of described single-chip microcomputer U1,5 pin are connected in the first crystal oscillator XT1 two ends, capacitor C 3 and capacitor C 4 are connected in parallel between the two ends and ground of the described first crystal oscillator XT1,4 of described single-chip microcomputer U1,6,7,8 pin be connected to respectively dual-tone multifrequency collect the digits send out number with the busy tone testing circuit in impulse sender spare U6, its 9 pin links to each other with 1 pin of memory device U3, they are 2 years old, 3 pin are connected to the recording playback circuit, it is 1 years old, 19 pin are to monostable device U4,18 pin are connected to expansion input interface U2,17 pin connect the interface circuit of withdrawing a garrison of setting up defences, its 14 pin links to each other with onsite alarming circuit and telephone wire break detection circuit simultaneously, 15,16 pin connect and gate device U5 and telephone interface part, and 12 pin connect powered battery and undervoltage detection circuit;

Described monostable device U4 constitutes single-chip microcomputer U1 reset circuit with capacitor C 1～C2, capacitor C 5～C6, resistance R 1～R3, wherein resistance R 1 is connected in parallel on 7 pin and the 8 pin two ends that are connected to power supply, 6 pin that connect together with 7 pin pass through capacitor C 1 ground connection, be connected to 5 pin with capacitor C 1 capacitor C 2 altogether, resistance R 2, R3 connect between back access power supply and the ground successively, 2 pin are connected on the node between resistance R 2 and the resistance R 3, and respectively through capacitor C 5 and capacitor C 6 be connected with 6 pin, 8 pin of gate device U5;

Among described and the gate device U5 two with eight input signals be the monostable triggering signal of the single-chip microcomputer U1 that resets;

Described subsets on-off control unit is made up of diode D10, relay R EL, electronic switch T7, resistance R 40, connect with electronic switch T7, resistance R 40 successively after described diode D10 and the relay R EL parallel connection, signal is connected to 15 pin of the single-chip microcomputer U1 in the central processing circuit;

Described subsets off hook state unit is made up of photoelectricity isolated tube U12～13, resistance R 38～39, wherein said resistance R 39 1 ends lead to power supply, the other end is connected on the node of photoelectricity isolated tube U12 and U12, and with single-chip microcomputer U1, communicate with gate device U5, described resistance R 38 is connected in parallel on photoelectricity isolated tube U12, the U13 of reverse parallel connection;

Described cell voltage boosting unit is by battery booster spare U14, capacitor C 26～C27, capacitor C 29～C30, resistance R 55 constitutes, 3 pin of described battery booster spare U14,4 pin and battery pack B1 and filtering electric capacity C26, the C27 parallel connection, its 5 pin, 8 pin are connected in parallel on capacitor C 29, the C30 two ends, and 1 pin and 3 pin of described battery booster spare U14 are connected as a single entity, 4 pin and 5 pin are connected as a single entity, it is used for 2 energy-conservation pin and links to each other with the electronic switch T10 of telephone wire and telephone interface circuit and the node of diode D9 by resistance R 55, accept the 11 foot control system signals of single-chip microcomputer U1, in addition, series connection one capacitor C 28 between its 6 pin and 7 pin;

Described under-voltage detecting unit is made of voltage detection device U15, resistance R 56, wherein 1 pin of voltage detection device U15 with lead to central processing circuit single-chip microcomputer U1 and with gate device U5, and being connected to power supply through resistance R 56, its 2 pin directly is connected to power supply, its 3 pin ground connection.

The utlity model has following advantage:

1. reasonable in design, diverse in function.The utility model can detect detector signal, and the beeper and the telephone automatic alarm that set in advance to owner by public phone network, or sends necessary warning message to alarm center; The utility model can be after detecting line interrupted, and loud chimes of doom is sent at the scene; The utility model is withdrawn a garrison the button except that having to set up defences, and is provided with ring detecting circuit, can set up defences by other telephone set remote controls in the public phone network and withdraw a garrison, and can also provide a control signal by remote control mode; Adopt the utility model user oneself can record alarm voice easily; And the utility model can be provided with promptly simultaneously, fire alarm, robber and police interface; Also have under-voltage detection of battery and warning function in addition.

2. the utility model volume is little, and is easy to use, selects powered battery for use, low in energy consumption, and price is honest and clean.

3. be widely used.The utility model can be widely used in family, warehouse, night shift room, accounting office, laboratory and the far distance controlled chamber of phone has been installed, and also can be used for telephone automatic alarm and remote telephone as the part of equipment.

Description of drawings:

Accompanying drawing 1 is a theory diagram of the present utility model.

Accompanying drawing 2 is the utility model circuit theory diagrams.

Accompanying drawing 3 is a main program flow chart in the utility model central processing circuit.

Below in conjunction with accompanying drawing structure of the present utility model and principle are described in further detail.

As Fig. 1, shown in 2, multi-function telephones network alarming device, has central processing circuit 1, telephone wire and telephone interface circuit 2, dual-tone multifrequency collects the digits and sends out number and busy tone testing circuit 3, recording playback circuit 4, ring detecting circuit 5, telephone wire break detection circuit 6, prober interface circuit 7, the interface circuit 8 of withdrawing a garrison of setting up defences, onsite alarming circuit 9, powered battery and undervoltage detection circuit 10, wherein have the prober interface circuit 7 of detector and have the withdraw a garrison output signal of interface circuit 8 of setting up defences of button and deliver to central processing circuit 1, described dual-tone multifrequency collects the digits to send out and number links to each other with central processing circuit 1 with busy tone testing circuit 3 one ends, the input signal of onsite alarming circuit 9 is provided by central processing circuit 1, before described telephone wire and telephone interface circuit 2 are serially connected in subsets, and collect the digits with dual-tone multifrequency respectively and send out number and busy tone testing circuit 3, recording playback circuit 4, central processing circuit 1 links to each other, the input signal of ring detecting circuit 5 and telephone wire break detection circuit 6 is respectively from telephone wire and telephone interface circuit 2, and the output signal of powered battery and undervoltage detection circuit 10 is input signals of central processing circuit 1;

Described central processing circuit 1 is by single-chip microcomputer U1, expansion input interface U2, memory device U3, monostable device U4, with gate device U5, the first crystal oscillator XT1, resistance R 1～R3 and capacitor C 1～C6 form, wherein single-chip microcomputer U1 respectively with expansion input interface U2, memory device U3, monostable device U4 with link to each other with gate device U5, described expansion input interface U2 respectively with 2 pin of memory device U3, dual-tone multifrequency collect the digits send out number with busy tone testing circuit 3 in impulse sender spare U6, with gate device U5, prober interface circuit 7 communicates, described monostable device U4 and reset circuit thereof be connected with gate device U5, described and gate device U5 respectively with ring detecting circuit 5, prober interface circuit 7, the interface circuit 3 of withdrawing a garrison of setting up defences, onsite alarming circuit 9 and telephone interface part, battery voltage supply and undervoltage detection circuit 10 signal communication;

4 pin of described single-chip microcomputer U1,5 pin are connected in the first crystal oscillator XT1 two ends, capacitor C 3 and capacitor C 4 are connected in parallel between the two ends and ground of the described first crystal oscillator XT1,4,6,7,8 pin of described single-chip microcomputer U1 be connected to respectively dual-tone multifrequency collect the digits send out number with busy tone testing circuit 3 in impulse sender spare U6; Its 9 pin links to each other with 1 pin of memory device U3,2,3 pin are connected to recording playback circuit 4,1,19 pin are to monostable device U4,18 pin are connected to expansion input interface U2,17 pin connect the interface circuit 8 of withdrawing a garrison of setting up defences, its 14 pin links to each other with onsite alarming circuit 9 and telephone wire break detection circuit 6 simultaneously, and 15,16 pin connect and gate device U5 and telephone interface part, and 12 pin connect powered battery and undervoltage detection circuit 10;

Described telephone wire and telephone interface circuit 2 comprise telephone line interface and telephone interface two parts, wherein the telephone interface part is made up of subsets on-off control unit and detection subsets off hook state unit, the subsets on-off control unit is held from subsets interface TELP, its break-make control signal is from central processing circuit 1, single-chip microcomputer U1 can cut off subsets where necessary, subsets interface TELN end is connected as a single entity with telephone line interface RING end, detect subsets off hook state units in series between telephone line interface TIP end and relay R EL, and signal is delivered to central processing circuit 1;

Described subsets on-off control unit is made up of diode D10, relay R EL, electronic switch T7, resistance R 40, connect with electronic switch T7, resistance R 40 successively after described diode D10 and the relay R EL parallel connection, signal is connected to 15 pin of the single-chip microcomputer U1 in the central processing circuit 1;

Described subsets off hook state unit is made up of photoelectricity isolated tube U12～U13, resistance R 38～R39, wherein said resistance R 39 1 ends lead to power supply, the other end is connected on the node of photoelectricity isolated tube U12 and U13, and with single-chip microcomputer U1, communicate with gate device U5, described resistance R 38 is connected in parallel on photoelectricity isolated tube U12, the U13 of reverse parallel connection;

The telephone line notch portion is by diode D1～D4, D9 in described telephone wire and the telephone interface circuit 2, electronic switch T4～T6, T10, voltage stabilizing didoe DZ1, capacitor C 17～C21, resistance R 30～R37, R46～R47 forms, described diode D1～D4 bridge-type connects and composes polar protective circuit, wherein two nodes join respectively with telephone line interface TIP end that links to each other with ring detecting unit 5 and RING end, in remaining two nodes one communicates with the earth, the emitter of another and electronic switch T6 joins, and delivers to telephone wire burn out detection unit 6; Be parallel with R35 on the described electronic switch T6 emitter junction, its base stage is connected to electronic switch T5 through resistance R 36, and the base stage of described electronic switch T5 is led to electronic switch T10, the resistance R 46～R47 of the 11 foot control system signals reverse that can make single-chip microcomputer U1 through resistance R 37 and diode D9; Described electronic switch T6 collector electrode leads to three nodes simultaneously: the one, dual-tone multifrequency collect the digits send out number with busy tone detecting unit 3 in resistance R 15, the 2nd, the protection filter circuit that constitutes by voltage stabilizing didoe DZ1 and capacitor C 21 parallel connections, the 3rd, the signal that is made of electronic switch T4, resistance R 30～R34, capacitor C 18～C20 amplifies and negative-feedback circuit, and described signal amplifies and negative-feedback circuit is connected respectively with busy tone device U6 with recording playback unit 4 through reaching the signal attenuation circuit that is made of resistance R 29 and capacitor C 17 by resistance R 30, R31 respectively;

Described powered battery and undervoltage detection circuit 10 are made up of battery pack B1, cell voltage boosting unit and under-voltage detecting unit, described cell voltage boosting unit is in parallel with battery pack, the output control signal that boosts to 5V is connected with telephone interface circuit 2 with telephone wire, the control signal that described under-voltage detecting unit output signal is a central processing circuit 1;

Described cell voltage boosting unit is by battery booster spare U14, capacitor C 26～C27, capacitor C 29～C30, resistance R 55 constitutes, 3 pin of described battery booster spare U14,4 pin and battery pack B1 and filtering electric capacity C26, the C27 parallel connection, its 5 pin, 8 pin are connected in parallel on capacitor C 29, the C30 two ends, and 1 pin and 3 pin of described battery booster spare U14 are connected as a single entity, 4 pin and 5 pin are connected as a single entity, it is used for 2 energy-conservation pin and links to each other with the electronic switch T10 of telephone wire and telephone interface circuit 2 and the node of diode D9 by resistance R 55, accept the 11 foot control system signals of single-chip microcomputer U1, in addition, series connection one capacitor C 28 between its 6 pin and 7 pin;

Described under-voltage detecting unit is made of voltage detection device U15, resistance R 56, wherein 1 pin of voltage detection device U15 with lead to central processing circuit 1 single-chip microcomputer U1 and with gate device U5, and process resistance R 56 is connected to power supply, its 2 pin directly is connected to power supply, its 3 pin ground connection, when cell voltage was lower than with gate device U15 setting voltage, 1 pin of described voltage detection device U15 provided under-voltage indication;

Described dual-tone multifrequency collects the digits to send out number with busy tone testing circuit 3 and is made up of collect the digits unit, the dual-tone multifrequency number of sending out unit and busy tone detecting unit of dual-tone multifrequency, wherein impulse sender spare U6 and capacitor C 10 realize the dual-tone multifrequency number of sending out function, described impulse sender spare U6 is HT9200,1,3,5,6 pin lead to central processing circuit 1,7 pin and are connected with the telephone line interface unit; Collect the digits device U7, the second crystal oscillator XT2, capacitor C 11～C12, resistance R 13～R15 realizes the dual-tone multifrequency function that collects the digits, and the described device U7 that collects the digits is MT8870, is connected with 11～14 pin of expanding input interface U2 by resistance; Totally 10 resistance of resistance R 16～R25 carries out giving expansion input interface U2 after the dividing potential drop to the output of the device U7 that collects the digits; The busy tone detecting unit is realized that by busy tone detection means U8, capacitor C 13～C15, resistance R 26～R27 described busy tone detection means U8 is SE567, and its 8 pin links to each other with 10 pin of expansion input interface U2, and input signal is from 3 pin of the described device U7 that collects the digits;

Described recording playback circuit 4 is realized by recording playback device U9, capacitor C 16 and resistance R 28,28 pin and 23 pin of recording playback device U9 are inserted at resistance R 2 two ends, capacitor C 16 is connected between its 16 pin and 12 pin, 28 pin and 16 pin of playback device U9 of wherein recording are a node, 12 pin and 13 pin are a node, 24 pin and 27 pin lead to single-chip microcomputer U1, its 14 pin, 20 pin and telephone wire are connected with telephone line notch portion in the telephone interface circuit 2, described recording playback device U9 is ISD1420 or like product, has outage back data and does not lose function;

Ring detecting circuit 5 is made up of diode D5～D8, voltage stabilizing didoe DZ3～DZ4, photoelectricity isolated tube U11, resistance R 49～R51 and capacitor C 24～C25, after described four diode D5～D8 bridge-type connects, wherein two nodes lead to the telephone line notch portion through resistance R 48, voltage stabilizing didoe DZ3～DZ4, capacitor C 25, resistance R 49 circuit of two other node ∏ in parallel formula step office communicate with 5 pin of gate device U5 and 13 pin of single-chip microcomputer U1 through in resistance R 50, photoelectricity isolated tube U11 and resistance R 51 and the central processing circuit 1 again;

Described telephone wire break detection circuit 6 is made up of resistance R 41～43, voltage stabilizing didoe DZ2, electronic switch T8～T9, capacitor C 23, wherein to the telephone line notch portion, its collector electrode links to each other with onsite alarming interface circuit 9 with central processing circuit 1 through electronic switch T9 electronic switch T8 base stage through voltage stabilizing didoe DZ2, resistance R 41; Voltage on the telephone wire behind the polarity protection of described electric circuit inspection in telephone wire and telephone interface circuit 2, when this voltage was lower than voltage stabilizing didoe DZ2 puncture voltage, electronic switch T8 ended, and provided the telephone wire disconnection signal;

Described prober interface circuit 7 deliver to expansion input interface U2 4,5,6 pin and with 1,2,4 pin of gate device U5, be divided into three road interfaces, resistance R 4, R7, R12, electronic switch T1, capacitor C 7 are the interface of first via detector, connect first via detector by detector port AL1+, AL1-; Resistance R 5, R8, R11, electronic switch T2, capacitor C 8 are the interface of No. the second detector, connect No. the second detector by detector port AL2+, AL2-; Resistance R 6, R9, R10, electronic switch T3, capacitor C 9 are the interface of Third Road detector, connect the Third Road detector by detector port AL3+, AL3-;

The described interface circuit 8 of withdrawing a garrison of setting up defences is made up of R44, R45, capacitor C 22, and withdraw a garrison by setting up defences on the one hand port SET+, SET-connect the button of withdrawing a garrison of setting up defences, lead on the other hand in the central processing circuit 1 single-chip microcomputer U1 and with gate device U5;

Described onsite alarming circuit 9 is made up of alarm appliance U10, alarming horn SP, one-way SCR pipe VSI, electronic switch T11～T12, diode D11, resistance R 52～54, wherein alarm appliance U10 adopts four tones of standard Chinese pronunciation alarm chip CW9561, trigger one-way SCR pipe VSI conducting from 14 pin of single-chip microcomputer U1 and the signal of telephone wire break detection circuit 6 by resistance R 52, electronic switch T11, resistance R 53, diode D11, make alarm appliance U10 work, alarming horn SP sends chimes of doom.

Operation principle of the present utility model is as follows:

During use, telephone wire is introduced into the utility model, enters subsets again; The button of withdrawing a garrison of setting up defences can externally connect; The utility model can externally connect a plurality of transducers; The built-in onsite alarming loudspeaker of the utility model; Powered battery is partly used one group of common batteries.

Central processing circuit 1 enters the state of setting after start, in following period of time, detect the subsets off-hook, starting dual-tone multifrequency collects the digits to send out and number detects subscriber dialings with busy tone testing circuit 3, if the user has inputed correct password and the correct coding that is provided with, just can finish password and revise, organize more the recording work of beeper number and multiple groups of phone numbers setting, alarm voice, these numbers and voice will be stored among the memory device U3 and recording playback device U9 that is not afraid of power down, and the utility model entered the power down power save mode after setting was finished; The interface circuit 8 of withdrawing a garrison when setting up defences detects to set up defences and withdraws a garrison after signal changes, and will trigger central processing circuit 1 and work, and the utility model is entered or withdraws from the robber and police state of setting up defences; Receive ringing tone, ring detecting circuit 5 will trigger central processing circuit 1 work, reach certain number of times as ringing tone, the utility model will be simulated off-hook automatically, enter remote state,, just can be provided with or remove the robber and police state of setting up defences if the user has inputed correct password and correct remote control coding, also can provide a control signal by remote control the utility model, control other equipment; Prober interface circuit 7 detects the variation of detector signal, trigger central processing circuit 1 work, if the current state of setting up defences that is in, the utility model will be reported to the police, at first will dial a plurality of warning beeper numbers successively, dial a plurality of alarm call numbers then successively, whenever dialed an alarm call number, all in the detection line whether ring-back tone or busy tone are arranged, to play alarm voice twice after judging the other side's off-hook, send the double-tone multi-frequency coding of necessary warning message simultaneously, busy as judging the other side's phone, then dial next alarm call number, dial the alarm call number of not getting through the front at last again; After the people cut off telephone wire, the telephone wire two ends did not have voltage, and telephone wire break detection circuit 6 can provide the telephone wire disconnection signal; After line interrupted takes place, trigger central processing circuit 1 work, start onsite alarming, loudspeaker send the very high alarm song of loudness, normal even telephone wire recovers, onsite alarming can not stop at once yet; Use of a specified duration to become when under-voltage when battery, powered battery and undervoltage detection circuit 10 send signal, and central processing circuit 1 work is sent the battery undervoltage warning to owner's beeper and phone, and the prompting owner changes battery.

As shown in Figure 3, the main program flow chart of the utility model central processing circuit 1 further illustrates the course of work of the present utility model, and described central processing circuit 1 is being in electricity-saving state in the overwhelming majority time at ordinary times, and program stops; When incidents such as warning take place, the signal central processing circuit 1 follow procedure works that resets; After all working was finished, central processing circuit 1 entered electricity-saving state again, and program stops.

Single-chip microcomputer U1 of the present utility model adopts the 89C2051 chip, can also adopt functionally similar Low-Power CMOS chip; Described expansion input interface U2 adopts 74HC165, memory device U3 selects HT98C46 for use, select for use serial serial EEPROM also to belong to the utility model design philosophy scope in one's power, described monostable device U4 is 555 monostable devices, described and gate device U5 adopts 74HC21, described battery booster spare U14 adopts MAX682 or functionally similar chip, and described voltage detection device U15 adopts the HT7033 chip.

Claims

1. multi-function telephones network alarming device, has central processing circuit (1), telephone wire and telephone interface circuit (2), dual-tone multifrequency collects the digits and sends out number and busy tone testing circuit (3), recording playback circuit (4), ring detecting circuit (5), telephone wire break detection circuit (6), prober interface circuit (7), the interface circuit (8) of withdrawing a garrison of setting up defences, onsite alarming circuit (9), powered battery and undervoltage detection circuit (10), it is characterized in that: wherein have the prober interface circuit (7) of detector and have the withdraw a garrison output signal of interface circuit (8) of setting up defences of button and deliver to central processing circuit (1), described dual-tone multifrequency collects the digits to send out and number links to each other with central processing circuit (1) with busy tone testing circuit (3) one ends, the input signal of onsite alarming circuit (9) is provided by central processing circuit (1), before described telephone wire and telephone interface circuit (2) are serially connected in subsets, and collect the digits with dual-tone multifrequency respectively and send out number and busy tone testing circuit (3), recording playback circuit (4), central processing circuit (1) links to each other, from telephone wire and telephone interface circuit (2), the output signal of powered battery and undervoltage detection circuit (10) is the input signal of central processing circuit (1) to the input signal of ring detecting circuit (5) and telephone wire break detection circuit (6) respectively;

Described central processing circuit (1) is by single-chip microcomputer U1, expansion input interface U2, memory device U3, monostable device U4, with gate device U5, the first crystal oscillator XT1, resistance R 1～R3 and capacitor C 1～C6 form, wherein single-chip microcomputer U1 respectively with expansion input interface U2, memory device U3, monostable device U4 with link to each other with gate device U5, described expansion input interface U2 respectively with 2 pin of memory device U3, dual-tone multifrequency collect the digits send out number with busy tone testing circuit (3) in impulse sender spare U6, with gate device U5, prober interface circuit (7) communicates, described monostable device U4 and reset circuit thereof be connected with gate device U5, described and gate device U5 respectively with ring detecting circuit (5), prober interface circuit (7), the interface circuit (8) of withdrawing a garrison of setting up defences, onsite alarming circuit (9) and telephone interface part, battery voltage supply and undervoltage detection circuit (10) signal communication;

Described telephone wire and telephone interface circuit (2) comprise telephone line interface and telephone interface two parts, wherein the telephone interface part is made up of subsets on-off control unit and detection subsets off hook state unit, the subsets on-off control unit is held from subsets interface TELP, its output signal is delivered to central processing circuit (1), subsets interface TELP end is connected as a single entity with telephone line interface RING end, detect subsets off hook state units in series between telephone line interface TIP end and relay R EL, and signal is delivered to central processing circuit (1);

Described powered battery and undervoltage detection circuit (10) are made up of battery pack B1, cell voltage boosting unit and under-voltage detecting unit, described cell voltage boosting unit is in parallel with battery pack, the output control signal that boosts to 5V is connected the control signal that described under-voltage detecting unit output signal is central processing circuit (1) with telephone interface circuit (2) with telephone wire.

2. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: 4 pin of described single-chip microcomputer U1,5 pin are connected in the first crystal oscillator XT1 two ends, capacitor C 3 and capacitor C 4 are connected in parallel between the two ends and ground of the described first crystal oscillator XT1,4 of described single-chip microcomputer U1,6,7,8 pin be connected to respectively dual-tone multifrequency collect the digits send out number with busy tone testing circuit (3) in impulse sender spare U6, its 9 pin links to each other with 1 pin of memory device U3, they are 2 years old, 3 pin are connected to recording playback circuit (4), it is 1 years old, 19 pin are to monostable device U4,18 pin are connected to expansion input interface U2,17 pin connect the interface circuit (8) of withdrawing a garrison of setting up defences, its 14 pin links to each other with onsite alarming circuit (9) and telephone wire break detection circuit (6) simultaneously, 15,16 pin connect and gate device U5 and telephone interface part, and 12 pin connect powered battery and undervoltage detection circuit (10).

3. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: described monostable device U4 and capacitor C 1～C2, capacitor C 5～C6, resistance R 1～R3 constitutes single-chip microcomputer U1 reset circuit together, wherein resistance R 1 is connected in parallel on 7 pin and the 8 pin two ends that are connected to power supply, 6 pin that connect together with 7 pin pass through capacitor C 1 ground connection, be connected to 5 pin with capacitor C 1 capacitor C 2 altogether, resistance R 2, R3 connects between back access power supply and the ground successively, 2 pin are connected on the node between resistance R 2 and the resistance R 3, and pass through respectively capacitor C 5 and capacitor C 6 and with 6 pin of gate device U5,8 pin connect.

4. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: among described and the gate device U5 two with eight input signals be the monostable triggering signal of the single-chip microcomputer U1 that resets.

5. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: described subsets on-off control unit is made up of diode D10, relay R EL, electronic switch T7, resistance R 40, connect with electronic switch T7, resistance R 40 successively after described diode D10 and the relay R EL parallel connection, signal is connected to 15 pin of the single-chip microcomputer U1 in the central processing circuit (1).

6. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: described subsets off hook state unit is made up of photoelectricity isolated tube U12～13, resistance R 38～39, wherein said resistance R 39 1 ends lead to power supply, the other end is connected on the node of photoelectricity isolated tube U12 and U13, and with single-chip microcomputer U1, communicate with gate device U5, described resistance R 38 is connected in parallel on photoelectricity isolated tube U12, the U13 of reverse parallel connection.

7. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: described cell voltage boosting unit is by battery booster spare U14, capacitor C 26～C27, capacitor C 29～C30, resistance R 55 constitutes, 3 pin of described battery booster spare U14,4 pin and battery pack B1 and filtering electric capacity C26, the C27 parallel connection, its 5 pin, 8 pin are connected in parallel on capacitor C 29, the C30 two ends, and 1 pin and 3 pin of described battery booster spare U14 are connected as a single entity, 4 pin and 5 pin are connected as a single entity, it is used for 2 energy-conservation pin and links to each other with the electronic switch T10 of telephone wire and telephone interface circuit (2) and the node of diode D9 by resistance R 55, accept the 11 foot control system signals of single-chip microcomputer U1, in addition, series connection one capacitor C 28 between its 6 pin and 7 pin.

8. according to the described multi-function telephones network alarming of claim 1 device, it is characterized in that: described under-voltage detecting unit is made of voltage detection device U15, resistance R 56, wherein 1 pin of voltage detection device U15 with lead to central processing circuit (1) single-chip microcomputer U1 and with gate device U5, and process resistance R 56 is connected to power supply, its 2 pin directly is connected to power supply, its 3 pin ground connection.

9. according to claim 1,2,3,4,5,6,7 or 8 described multi-function telephones network alarming devices, it is characterized in that: described single-chip microcomputer U1 is the 89C2051 device, and described expansion input interface U2 adopts 74HC165, and described memory device U3 is HT93C46; Described monostable device U4 is 555 monostable devices, and described and gate device U5 adopts 74HC21, and described battery booster spare U14 adopts MAX682, and described voltage detection device U15 adopts the HT7033 chip.