CN2285033Y - Telephone-transmitting alarm - Google Patents

Abstract

The utility model relates to an automatic alarm device by using a telephone transmission system. The utility model comprises a switch control circuit 7 which is connected with a sensor. A normally open contact J1-1 of a magnetic latching relay is connected with a bridge rectifier circuit and an electronic switching circuit 2, so a power supply can be controlled to be switched on or switched off. The signals of the switch control circuit 7 and a single audio demoding circuit 4 are received by a monolithic computer 8, and the resetting action of the magnetic latching relay and the dialing action of a number transmission circuit are controlled by the monolithic computer 8 at the same time. In addition, the monolithic computer 8 controls the electronic switching circuit 2 to do action; thus, the power-on action and power-off action of the electronic switching circuit 2 can be finished. By using the electronic switching circuit, the number transmission circuit 5 can send out the signal.

Description

But the warning device of phone transmission

The utility model relates to a kind of by telephone transmission system, the device of automatic dialing alarm, specifically telephone alarm device.

As everyone knows, the existing telephone warning device generally has two classes, and the one, install the automatic dialing alarm device on the redialing function phone additional having, the 2nd, utilize single-chip microcomputer to close and report to the police with the words toe-in, the back is a kind of must use external power supply, though and preceding a kind of external power supply that do not use, reliability is relatively poor.

The utility model purpose is, a kind of reliability height is provided, directly utilize phone-line-powered, and can be by the device of telephone transmission system from trend public security, fire department automatic dialing alarm.

To achieve the above object of the invention, the utility model can be realized by following measure, ON-OFF control circuit 7 links to each other with bridge rectifier 1 and transducer respectively, the magnetic latching relay J1 normally opened contact J1-1 of ON-OFF control circuit 7 is connected between bridge rectifier 1 and the electronic switching circuit 2, " leading to " of control power supply, " break ", single-chip microcomputer 8 receiving key control circuits 7 and single audio frequency decoding circuit 4 signals, the magnetic latching relay J1 of control switch control circuit 7 resets and signaling circuit 5 dialing simultaneously, in addition, on-hook is finished in 2 actions of control electronic switching circuit, the off-hook action, signaling circuit 5 is sent signal through electronic switching circuit 2, single audio frequency decoding circuit 4 detects the status signal of telephone wire through electronic switching circuit 2.

The utility model also can be realized by following measure

Signaling circuit 5 control telecommunication circuits 6 and coupled microphone E send audio signal through electronic switching circuit 2 to telephone wire.

Electronic switching circuit 2 links to each other with words line states automatic restoring circuit 3, makes telephone wire recover hook state.

ON-OFF control circuit 7 is made up of electrochemical capacitor C19, triode J6, J7 and magnetic latching relay J1, be connected with magnetic latching relay J1 between triode J6, the J7 collector electrode, the J7 base stage is a magnetic latching relay J1 reseting controling end, and the J6 base stage connects electrochemical capacitor C19 negative pole.

The power circuit power supply that single-chip microcomputer 8 is made up of diode D5, resistance R 4, R24, voltage stabilizing didoe WD2 and electrochemical capacitor C5.

Words line states automatic restoring circuit 3 is made of electronic switching circuit and controllable silicon J14, the triode J15 that voltage stabilizing didoe WD4, triode J12, J13 form, J13 emitter control J14 trigger end, the J14 positive pole links to each other with telephone wire through magnetic latching relay J1 normally-closed contact J1-2, the J14 negative pole connects triode J15 base stage, and the J15 collector electrode connects the control end of electronic switching circuit 2.

The utility model utilizes the action of transducer Single-chip Controlling magnetic latching relay, realization is to the power supply and the outage of warning circuit, itself do not need power supply to keep state after the actuating of relay, reduced the loss of power, thereby can directly utilize the power supply of words line, not need external power supply, in addition, the utility model can keep the words line to be in normal state all the time, guarantees that warning device can spread out of alarm signal automatically in time.

The utility model is described in detail by embodiment below in conjunction with accompanying drawing, wherein

Fig. 1 is theory diagram of the present utility model.

Fig. 2 is the utility model circuit diagram.

Fig. 1, shown in Figure 2, ON-OFF control circuit 7 is in order to the connection of control the utility model warning circuit power supply, diode D15, negative pole connects the positive pole of electrochemical capacitor C19 after the D16 parallel connection, the C19 negative pole connects triode J6 base stage, triode J6, connect magnetic latching relay J1 between the J7 collector electrode, the J7 base stage connects the pin one 7 of single-chip microcomputer JC3 as the reseting controling end of J1, the diode D16 positive pole alert transducer of starting to exchange fire, the robber and police hand switch K2 of D15 positive pole through being in parallel, relay normally-closed contact J2-1 connects the bridge rectifier output, the bridge rectifier input line of answering the call, relay J 2 connects the robber and police transducer, magnetic latching relay J1 normally opened contact J1-1 is between bridge rectifier output and electronic switching circuit 2, triode J1, J2 forms electronic switching circuit 2, the J2 base stage connects single-chip microcomputer KC3 pin two and pulse/double-tone number of taking place frequently integrated circuit JC2 pin one 4 respectively, triode J1 collector electrode order audio decoder integrated circuit JC1 pin 3, JC1 pin 8 connects single-chip microcomputer JC3 pin one 8.The pin annexation of single-chip microcomputer JC3 and pulse/double-tone number of taking place frequently integrated circuit JC3 is 6-1,7-2,8-3,9-4,10-15,11-16,12-17, and single-chip microcomputer JC3 pin one 5,16 connects crystal oscillating circuit.JC12 pin one 3 connects the control end of telecommunication circuit 6, and telecommunication circuit 6 signal output parts connect triode J1 collector electrode, and telecommunication circuit 6 is made up of microphone E, triode J4, J5 and resistance, electric capacity etc., belongs to common circuit, repeats no more here.The diode D5 negative pole of forming voltage-stabilized power supply circuit is through resistance R 4, R24, voltage stabilizing didoe WD2 ground connection, electrochemical capacitor C5 is in parallel with R24, WD2, capacitor C 21 is in parallel with WD2, and diode D5 positive pole connects triode J1 collector electrode, and the voltage VD2 that voltage stabilizing didoe WD2 is produced is single-chip microcomputer JC3 power supply.Triode J8, J11, resistance R 25, R26, R39, R42, R43, capacitor C 18, C19, C28, C29 forms fire alarm jointly, the robber and police signal recognition circuit, triode J8 base stage connects diode D16 positive pole through resistance R 25, electrochemical capacitor C28 positive pole connects diode D16 positive pole, the C28 negative pole connect " ", triode J8 collector electrode is through resistance R 39, diode D21, resistance R 42, R43 connects triode J11 base stage, the J11 emitter connect " ", electrochemical capacitor C29 positive pole meets R42, between the R43, negative pole connect " ", diode D21 positive pole meets the VD2 of voltage-stabilized power supply circuit, the J11 collector electrode connects diode D15 negative pole through electrochemical capacitor C19, the very fire alarm of triode J8 current collection, the robber and police signal output part connects the signal identification pin one of single-chip microcomputer JC3.The triode J12 collector electrode of forming words line states automatic restoring circuit 3 links to each other with the J13 base stage, the J13 emitter connects the controllable silicon J14 control utmost point, the J14 negative pole connects triode J15 base stage, J15 collector connecting transistor J2 base stage, controllable silicon J14 positive pole is through resistance R 46 line of answering the call, the words line is connected with magnetic latching relay J1 normally-closed contact J1-2, and voltage stabilizing didoe WD4 positive pole, triode J12, J13, J15 collector electrode connect triode J1 emitter through resistance respectively.

When fire alarm or robber and police sensor sensing during to signal, send a triggering signal (or to press the manual alarm switch R2 of robber and police from diode D16 or relay J 2 normally-closed contact J2-1, then also send triggering signal), produce a pulse signal through the instantaneous charging of electrochemical capacitor C19, trigger triode J6 makes it saturated, be filled with 50 volts of left and right sides voltages by telephone wire when electrochemical capacitor C23 is flat, thereby under the effect of triggering signal, magnetic latching relay J1 adhesive.Because of magnetic latching relay has bi-stable function, once triggering upset, will keep its standing state, need not keep electric current.J1-is through adhesive, normally opened contact J1-1 conducting, and bridge rectifier 1 is whole warning circuit power supply, normally-closed contact K1-2 disconnects, and cuts off subscriber phone.Single-chip microcomputer JC3 pin one connects triode J8 collector electrode, being used for judging is fire alarm or robber and police, the J8 pin of JC3 is connected the state that is used to detect on the telephone wire (from busy tone, the solid bell sound of J19 or J10 platform, receive answer signal, reset signal that main frame sends) with decoding circuit, 2 pin of JC3 link to each other with the J4 pin of the base stage of triode J2 and JC2, be used to control the conducting of triode J2 and end, thereby the conducting of control triode J1 with end, finish automatic off-hook and on-hook function, control JC3 in addition and dial alarm call automatically and give self address code.The J7 pin of JC3 links to each other with triode J7 base stage by resistance R 36, when high level of output, J1 is resetted, and sounds all clear.The power circuit that D5, R4, C5, R24, WD2 form, when its voltage VD2 reaches certain value, single-chip microcomputer JC3 starts working, electrification reset at first, detect the pin one state of JC3 then, being that low level is then controlled the JC2 alert phone that pokes fire, is that high level is then controlled JC2 and dialled police emergency call, and respective number outputs among the JC2 by JC3.

JC3 detects the words line states incessantly in alarm procedure, and when being busy tone, JC3 makes its pin two output low level, thereby J2, J1 end, and warning circuit is in hook state, delay time after 0.5 second, JC3 pin two output high level, J2, J1 are saturated, and warning circuit is in off hook state.In hooks on process, 5 discharges provide power vd 2 by capacitor C, because the on-hook time is 0.5 second, the electric energy that capacitor C 5 is stored is enough to keep single-chip microcomputer JC3 operate as normal; When being ring-back tone, warning circuit is in the off-hook wait state, detects JC3 pin one 8 level states at any time; When receiving first answer signal that main frame sends, single-chip microcomputer JC3 time-delay 1 second if the no response signal sends self address code, when receiving second answer signal, is just waited for, if can not receive answer signal in 15 seconds, redials with regard to on-hook; When receiving reset signal, high level of 17 pin of JC3 output makes triode J7 saturated, and then magnetic latching relay J1 resets, and J1-1 often returns to and opens, J1-2 reverts to normally off, alarm release, whole warning circuit outage; When can not receive reset signal, warning circuit is in the off-hook listening state, and the acoustic scene tone signal is through microphone E and give circuit 6 and send.When being in off hook state, because triode J9 is saturated, the pin 5 of JC2 is input as low level, the J4 pin is output as high level, triode J2, K1 is saturated under the control of this high level, warning circuit enters the standby dialing status, the pin J2 of JC2 links to each other with triode J3 base stage through resistance R 12, form the double-audio signal output circuit, when the double-tone number of taking place frequently, pin J2 output high level makes J3 work in magnifying state, and double-audio signal is superimposed upon and adds on the DC component on the J3 base stage simultaneously, after the amplification, from collector electrode output, resistance R 9, capacitor C 8 also is attached to the J3 emitter, forms the high frequency negative feedback circuit to reduce the output level of the harmonic signal in the double-audio signal, JC2 pin J3 and diode D7 are connected to form mute circuit, promptly in number state of sending out, J3 pin output low level, D7 conducting, the base stage of triode J4 is clamped at about 0.7 volt, and therefore telecommunication circuit is closed.

The utility model if because of certain reason (as be not intended to or deliberately with the long-time off-hook of telephone receiver) make switch be in guard mode; voltage then is lower than 6 volts on the subscriber's telephone line; can not carry out communication; this moment, warning circuit can't use; for making telephone line recover normal, must make circuit be in open-circuit condition about 1 second.For making switch recover normal communication, words line states automatic restoring circuit is exactly to be provided with for this purpose.Be in normal condition at telephone wire, after magnetic latching relay J1 triggers, the A point voltage is greater than 8 volts, after resistance R 44, R45 dividing potential drop, be connected to triode J12 base stage by 5 volts of voltage-stabiliser tube WD4, because voltage height, the electric current of voltage-stabiliser tube WD44 of flowing through is enough to make J12 saturated, then J13 ends, and controllable silicon J14 controls utmost point Triggerless, not conducting of J14 like this, triode J15 ends, its collector connecting transistor J2 base stage and since J15 by the conducting that can not influence J2 with end so entire circuit operate as normal; If transducer is when producing alarm signal; the A point voltage is lower than 6 volts (being that switch is in guard mode); the electric current of voltage stabilizing didoe WD4 of flowing through this moment is very faint; triode J12 will end like this; the J13 base stage obtains a high level saturation conduction by resistance R 46; the controllable silicon J14 control utmost point has a triggering signal; make the J14 conducting; triode J15 is saturated, thereby triode J2 base potential is clamped at low level, J2; J1 ends; the utility model warning circuit is in hook state; whole load is all extractd on the telephone wire, thereby makes switch recover normal condition, and the utility model can normally use.The ON time of controllable silicon T14 depends on the electric current of keeping of the time constant of C26, R50 and J14, when C26 discharges into can not keep controllable silicon J14 conducting the time, triode J15 ends, because J2 ends, warning circuit can not be drawn electric energy from telephone wire in controllable silicon J14 conduction period.And magnetic latching relay J1 normally-closed contact J1-2 disconnects, so non-loaded on the whole telephone wire, process is after about 1 second (when being not conducting of controllable silicon J14), switch recovers to talk about about 50 volts of voltage on the line automatically, triode J2, J1 are saturated at this moment, and warning circuit powers on, and finishes the automatic off-hook function.

Claims (6)

1, but a kind of warning device of phone transmission, comprise the bridge rectifier 1 that links to each other with telephone wire, it is characterized in that also comprising respectively and transducer, the ON-OFF control circuit 7 that bridge rectifier 1 links to each other, the magnetic latching relay J1 normally opened contact J1-1 of ON-OFF control circuit 7 is connected between bridge rectifier 1 and the electronic switching circuit 2, control power supply " leading to " " breaks ", single-chip microcomputer 8 receiving key control circuits 7 and single audio frequency decoding circuit 4 signals, the magnetic latching relay J1 of control switch control circuit 7 resets and signaling circuit 5 dialing simultaneously, in addition, on-hook is finished in 2 actions of control electronic switching circuit, the off-hook action, signaling circuit 5 is sent signal through electronic switching circuit 2, single audio frequency decoding circuit 4 detects the status signal of telephone wire through electronic switching circuit 2.

But, it is characterized in that said signaling circuit 5 control telecommunication circuits 6 and coupled microphone E send audio signal through electronic switching circuit 2 to telephone wire 2, according to the warning device of the described phone transmission of claim 1.

But, it is characterized in that said electronic switching circuit 2 links to each other with words line states automatic restoring circuit 3, makes telephone wire recover hook state 3, according to the warning device of the described phone transmission of claim 1.

But 4, according to the warning device of the described phone transmission of claim 1, it is characterized in that said ON-OFF control circuit 7 is made up of electrochemical capacitor C19, triode J6, J7 and magnetic latching relay J1, be connected with magnetic latching relay J1 between triode J6, the J7 collector electrode, the J7 base stage is a magnetic latching relay J1 reseting controling end, and the J6 base stage connects electrochemical capacitor C19 negative pole.

But, it is characterized in that the power circuit power supply that said single-chip microcomputer 8 is made up of diode D5, resistance R 4, R24, voltage stabilizing didoe WD2 and electrochemical capacitor C5 5, according to the warning device of the described phone transmission of claim 1.

But 6, require the warning device of 3 described phone transmission according to power, it is characterized in that what is said or talked about, line states automatic restoring circuit 3 is made of electronic switching circuit and controllable silicon J14, the triode J15 that voltage stabilizing didoe WD4, triode J12, J13 form, J13 emitter control J14 trigger end, the J14 positive pole links to each other with telephone wire through magnetic latching relay J1 normally-closed contact J1-2, the J14 negative pole connects triode J15 base stage, and the J15 collector electrode connects the control end of electronic switching circuit 2.