CN2340035Y - Automatic alarm for telephone set - Google Patents

Abstract

The utility model relates to a telephone automatic alarm which is composed of a probe, a trigger circuit, an interface circuit, a signal detecting circuit, a single-chip computer and a sound recording and playing circuit, wherein, the interface circuit is connected with the telephone. The utility model has the advantages of utilization on a public communication network as a transmission medium, automatic, quick, accurate and reliable features, convenient and flexible networking, low cost, and convenience for popularization to ordinarily resident families.

Description

The telephone automatic alarm device

The utility model relates to a kind of telephone automatic alarm device.

At present, the like product that Rui Ze company in Nanjing produces, its control section is finished with digital circuit, and its major defect is can not judge the switch backhaul signals after sending out number, and promptly whether the route of pipe line is not connected, and puts the warning language content always in order.

The purpose of this utility model provides a kind of public telecommunication network that utilizes and makes transmission medium, has automatically, telephone automatic alarm device fast and accurately.

The purpose of this utility model is to realize like this, it is by probe, trigger circuit, interface circuit, signal deteching circuit, single-chip microcomputer and recording and playing circuit are formed, the input end of probe contact Power Generation Road, the output control single chip computer of trigger circuit, the power supply of signal deteching circuit and recording and playing circuit, the output of single-chip microcomputer is by interface circuit the answer the call Hands-free key and the dial-up circuit of machine, another road output connecting triggering circuit of single-chip microcomputer, the Third Road output of single-chip microcomputer connects the input end of recording and playing circuit, the polarity transformation circuits of telephone set connects the input end of signal deteching circuit by interface circuit, the output of signal deteching circuit connects the input end of single-chip microcomputer, and the output of recording and playing circuit is by the answer the call speaking circuit of machine of interface circuit.Probe adopts the break type sensor: door status switch K4, gas sensor, far-infrared sensor, cigarette sense probe.

The course of work of the present utility model is as follows:

In a single day the break type sensor is triggered, the single-chip microcomputer power-on reset, through after the suitable time-delay, program begins to carry out, and single-chip microcomputer sends instruction, finishes off-hook, dialing automatically by interface circuit, first sets of numbers of at first transfering, behind speech channel connection and the other side's off-hook, the control recording and playing circuit was play audio alert information 30 seconds to speaking circuit, dialed second sets of numbers then.If run into subscriber engaged after sending out number, busy tone appears, can skip the playback process, transfer a next sets of numbers rapidly, circulation successively up to like clockwork alert being passed to the other side, is promptly finished the voice overall process of reporting to the police automatically.

Advantage of the present utility model is as follows: (1) utilizes public telecommunication network to make transmission medium, and Home Telephone is quite universal at present, as long as the user of phone has been installed, this alarm can be installed.(2) this warning utensil have automatically, characteristics fast and accurately, when the alert of making an appointment takes place, can dial three groups of telephone numbers or the paging number stored automatically, the audio alert content that recorded of broadcast automatically behind the other side's off-hook.If run into subscriber engaged, can in 2 seconds, change and pull up sets of numbers, and can be according to the order Automatic Cycle of dialing, detection, playback.(3) trigger interface adopts the triggering mode that opens circuit, and a plurality of probe series connection such as antitheft, cigarette sense, harmful gas can be used, and is convenient to extended function.(4) networking is convenient, flexible, can be customer group with resident institute, reports to the police to the unit duty room, also can report to the police to 110 of public security department.Also can become a partner with neighbours simultaneously, stay telephone number mutually, reciprocate favors is reported to the police.Can give again and stay mobile phone, beeper number, make the owner who goes out grasp situation in the family at any time.(5) conventional alarm system mostly exists warning simultaneously to strive the channel problem.And this alarm can not cause confusion owing to utilize public telecommunication network, this problem to be satisfactorily resolved, and it is reliable to guarantee to report to the police.(6) cost is low, is convenient to ordinarily resident family and popularizes, and wide development prospect is arranged.

Below in conjunction with drawings and Examples the utility model is further described:

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

Fig. 2 is circuit theory diagrams of the present utility model.

Fig. 3 is a flow chart of the present utility model.

By Fig. 1-2 as can be known, the utility model is by probe, trigger circuit, interface circuit, signal deteching circuit, single-chip microcomputer and recording and playing circuit are formed, the input end of probe contact Power Generation Road, the output control single chip computer of trigger circuit, the power supply of signal deteching circuit and recording and playing circuit, the output of single-chip microcomputer is by interface circuit the answer the call Hands-free key and the dial-up circuit of machine, another road output connecting triggering circuit of single-chip microcomputer, the Third Road output of single-chip microcomputer connects the input end of recording and playing circuit, the polarity transformation circuits of telephone set connects the input end of signal deteching circuit by interface circuit, the output of signal deteching circuit connects the input end of single-chip microcomputer, and the output of recording and playing circuit is by the answer the call speaking circuit of machine of interface circuit.

Probe adopts the break type sensor: door status switch K4, gas sensor, far-infrared sensor, cigarette sense probe.

Single-chip microcomputer is made up of IC4 and peripheral cell source program storage IC3 thereof, transistor VT2, resistance R 4-R8, capacitor C 6-C8, program input port PC, crystal JZ, 1,2 pin of IC3 connect 1,18 pin of IC4 respectively, 3,4 pin of IC3 connect 17 pin of IC4 by R8, VT2, R4-R7, C6 form the low-voltage reset circuit, the collector of VT2 connects 4 pin of IC4, R5 and R7 are composed in series the bias circuit of VT2, and R6 is the collector resistance of VT2, and 2,3 pin of IC4 meet program input port PC.

Trigger circuit are by ic chip 5, controllable silicon MCR, resistance R 9, R10, R14, R17-R20, capacitor C 13, diode D3, D5 forms, D3, R20, R18, C13 is composed in series delay circuit, MCR is in parallel with C13, MCR is the controllable silicon that automatically resets, the control utmost point of MCR passes through D5, R9 connects 13 pin of IC4, the node of R20 and R18 meets 5 of IC5,12 pin, power switch K1, R19, R17, K4 is serially connected between power supply and the ground, the node of R19 and R17 meets 1 of IC5,2,6 pin, the base stage of VT7 meets 10 of IC5 by R14,13 pin, the collector of VT7 connects positive source by K1, the emitter of VT7 connects 14 pin of IC4 respectively, 8 pin of IC3,4 pin of IC2, the emitter of VT2, the VDD of IC9 connects the emitter of VT7 by D2, and 9 pin of IC4 connect 3 pin of IC5 by D4, and the emitter of VT7 connects 9 pin of IC4 by R10.

Signal deteching circuit is made up of ic chip 2 and peripheral cell capacitor C 2-C4, resistance R 2, R3, potentiometer W, IC2 is a tone decoder, 1,2,6 pin of IC2 are respectively by C2, C3, C4 ground connection, R3 be connected between 5 pin and 6 pin of IC2 after W connects, input end 3 pin of IC2 are by the answer the call polarity transformation circuits JBC of machine of C1, and output terminal 8 pin of IC2 connect 10 pin of IC4.

Recording and playing circuit is made up of ic chip 9, transistor VT6, resistance R 15, capacitor C 10, diode D1, D2, K switch 2, K3, output terminal 11 pin of IC4 connect the base stage of VT6 by R15, the collector of VT6 connects the PLAY pin of IC9, and the output terminal SP+ of IC9 is by the answer the call speaking circuit THC of machine of C9.

Interface circuit is made up of photoelectrical coupler IC1, IC6-IC8, transistor VT1, VT3-VT5, resistance R 1, R11-R13, capacitor C 1, C5, C9, output terminal 12 pin of IC4 connect the base stage of VT1 by R1, the collector of VT1 connects 2 pin of IC1, the answer the call Hands-free key MTC of machine of 4,5 pin of IC1,6,7,8 pin of IC4 connect the base stage of VT3-VT5 respectively by R11-R13, the VT3-VT5 collector connects 2 pin of IC6-IC8 respectively, answer the call respectively quick dial key M1, M2, the M3 of dial-up circuit BHC of machine of 4,5 pin of IC6-IC8.

In Fig. 2, IC2 is LM567, and IC4 is PIC16C58, and IC5 is CD4011.

Below in conjunction with circuit theory diagrams principle of work of the present utility model is described:

Owner by the warning room connects power switch K1 when going out, and positive supply is through charging to C13 by D3, R200, R18, and as VC13 during greater than 10/2Vcc, trigger circuit stand alert.Approximately need 35 seconds by VC13=0 to VC13=1/2Vcc.In 35 seconds, the process of can opening the door, promptly door status switch K4 disconnected within 35 seconds, and circuit can not be triggered.After 35 seconds, the someone enters room (K4 disconnection) again, and 6 pin of IC5 become high level, 4 pin low levels, and 10 pin become high level, the VT7 conducting, positive supply is exported by the VT7 emitter-base bandgap grading, single-chip microcomputer IC4 power-on reset, program begins to carry out.If owing to disturb when making the circuit false triggering, single-chip microcomputer IC4 is by the 3 pin level of P3 test I C5.Judge due to the interference really that it is on the alert then can circuit to be returned to by the P7 triggering MCR of IC4.Adopt this trigger circuit reliably to trigger, filtering interfering can also make power consumption on the alert fall in minimum.

The 6-13 pin of single-chip microcomputer IC4 is 8 the two-way I/O mouths that can independently programme, the P0-P8 mouth.Wherein P0, P1, P2 are set to output state, and as number trigger of sending out of three groups of telephone numbers, the quick dial key M1-M3 that drives the telephone set dial-up circuit by interface circuit finishes automatic dialing.P3 is set to input state, as suppressing the narrow pulse interference thief hatch, cooperates filter in the software for disturbing in addition filtering.P4 is set to input state, as the detection signal input port.P5 is set to output state, starts the recording and playing circuit playback by VT6 during high level, begins to broadcast in the audio alert that has recorded perhaps beeper number.P6 is set to output state, finishes off-hook, the hooks on process of telephone set during high level by VT1, IC1.P7 is set to output state, and by after the single-chip microcomputer differentiation, P7 exports high level, makes circuit reset when occurring disturbing error starting.2, the 3 pin conduct of IC4 and the interface of PC swap data.

Signal deteching circuit mainly is the modulation signal that the telephone set outside line comes through capacitor C 1 coupling to be carried out detection handle.Promptly remove the carrier frequency of 450Hz.Finish demodulating process with IC2 tone decoder (phaselocked loop).R3, C4 be as the internal oscillator frequency adjustment element, and suitably choosing its numerical value, can to make oscillation frequency be 450Hz.C3 is the bandwidth control element, suitably chooses its numerical value and can make circuit bandwidth satisfy the frequency range requirement of 450+20Hz.

Claims (7)

1, a kind of telephone automatic alarm device, it is characterized in that it is by probe, trigger circuit, interface circuit, signal deteching circuit, single-chip microcomputer and recording and playing circuit are formed, the input end of probe contact Power Generation Road, the output control single chip computer of trigger circuit, the power supply of signal deteching circuit and recording and playing circuit, the output of single-chip microcomputer is by interface circuit the answer the call Hands-free key and the dial-up circuit of machine, another road output connecting triggering circuit of single-chip microcomputer, the Third Road output of single-chip microcomputer connects the input end of recording and playing circuit, the polarity transformation circuits of telephone set connects the input end of signal deteching circuit by interface circuit, the output of signal deteching circuit connects the input end of single-chip microcomputer, and the output of recording and playing circuit is by the answer the call speaking circuit of machine of interface circuit.

2, alarm according to claim 1 is characterized in that probe adopts the break type sensor: door status switch K4, gas sensor, far-infrared sensor, cigarette sense probe.

3, alarm according to claim 2, it is characterized in that single-chip microcomputer is made up of IC4 and peripheral cell source program storage IC3 thereof, transistor VT2, resistance R 4-R8, capacitor C 6-C8, program input port PC, crystal JZ, 1,2 pin of IC3 connect 1,18 pin of IC4 respectively, 3,4 pin of IC3 connect 17 pin of IC4 by R8, VT2, R4-R7, C6 form the low-voltage reset circuit, the collector of VT2 connects 4 pin of IC4, R5 and R7 are composed in series the bias circuit of VT2, R6 is the collector resistance of VT2, and 2,3 pin of IC4 meet program input port PC.

4, alarm according to claim 3, it is characterized in that trigger circuit are by ic chip 5, controllable silicon MCR, resistance R 9, R10, R14, R17-R20, capacitor C 13, diode D3, D5 forms, D3, R20, R18, C13 is composed in series delay circuit, MCR is in parallel with C13, MCR is the controllable silicon that automatically resets, the control utmost point of MCR passes through D5, R9 connects 13 pin of IC4, the node of R20 and R18 meets 5 of IC5,12 pin, power switch K1, R19, R17, K4 is serially connected between power supply and the ground, the node of R19 and R17 meets 1 of IC5,2,6 pin, the base stage of VT7 meets 10 of IC5 by R14,13 pin, the collector of VT7 connects positive source by K1, the emitter of VT7 connects 14 pin of IC4 respectively, 8 pin of IC3,4 pin of IC2, the emitter of VT2, the VDD of IC9 connects the emitter of VT7 by D2,9 pin of IC4 connect 3 pin of IC5 by D4, and the emitter of VT7 connects 9 pin of IC4 by R10.

5, alarm according to claim 4, it is characterized in that signal deteching circuit is made up of ic chip 2 and peripheral cell capacitor C 2-C4, resistance R 2, R3, potentiometer W, IC2 is a tone decoder, 1,2,6 pin of IC2 are respectively by C2, C3, C4 ground connection, R3 be connected between 5 pin and 6 pin of IC2 after W connects, input end 3 pin of IC2 are by the answer the call polarity transformation circuits JBC of machine of C1, and output terminal 8 pin of IC2 connect 10 pin of IC4.

6, alarm according to claim 5, it is characterized in that recording and playing circuit is made up of ic chip 9, transistor VT6, resistance R 15, capacitor C 10, diode D1, D2, K switch 2, K3, output terminal 11 pin of IC4 connect the base stage of VT6 by R15, the collector of VT6 connects the PLAY pin of IC9, and the output terminal SP+ of IC9 is by the answer the call speaking circuit THC of machine of C9.

7, alarm according to claim 6, it is characterized in that interface circuit is by photoelectrical coupler IC1, IC6-IC8, transistor VT1, VT3-VT5, resistance R 1, R11-R13, capacitor C 1, C5, C9 forms, output terminal 12 pin of IC4 connect the base stage of VT1 by R1, the collector of VT1 connects 2 pin of IC1,4 of IC1, the answer the call Hands-free key MTC of machine of 5 pin, 6 of IC4,7,8 pin connect the base stage of VT3-VT5 respectively by R11-R13, the VT3-VT5 collector meets 2 pin of IC6-IC8,4 of IC6-IC8 respectively, answer the call the respectively quick dial key M1 of dial-up circuit BHC of machine of 5 pin, M2, M3.

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