CN1075372A - Automatic dialing speech-sound alarm - Google Patents

Abstract

Automatic dialing speech-sound alarm is handled memory circuit, signal pre-processing circuit, interface circuit, signaling testing circuit and automatic dial-up circuit by control logic circuit, speech digit and is formed.It adopts voice processing technology voice digitization to be realized the storage and the playback of voice, the alarm content that adopts the telephone communication technology will record in advance behind the signal that receives the report for police service sends by telephone line by pre-set telephone number, and whole alarm procedure is not sent any sound.

Description

Automatic dialing speech-sound alarm

The present invention relates to alarm, particularly adopt the phonetic alarm of speech signal digital processing technology and telephone communication technology.

Existing alarm generally adopts acoustooptic technique, reports to the police to people with specific sound (non-voice) or light behind the signal that receives the report for police service.But these alarms can not provide the more content about reporting to the police, and more can not meet the demands aspect public safety especially, and people often wish and can send warning message as much as possible to others with voice rapidly and unnoticedly in these occasions.Purpose of the present invention is exactly to provide a kind of automatic dialing speech-sound alarm for the above-mentioned deficiency that overcomes existing alarm, it adopts the speech digit treatment technology with voice digitization, realize the storage and the playback of voice, the alarm content (place, incident etc.) that adopts the telephone communication technology will prerecord behind the signal that receives the report for police service sends by telephone line by pre-set telephone number, and whole alarm procedure is not sent any sound.

Above-mentioned purpose is achieved in that automatic phonetic alarm of the present invention is by control logic circuit, speech digit is handled memory circuit, signal pre-processing circuit, interface circuit, signaling testing circuit and automatic dial-up circuit are formed, when the warning ALM button that is positioned at interface circuit is pressed, alerting signal promptly is sent to the input end of the Sheffer stroke gate IC1 in the interface circuit: C, rejection gate IC4 in the control logic circuit: the input end of C and IC5: B, if this moment, speech digit was handled the pronounciation processing chip IC-U(T6668 in the memory circuit) be in the integrated circuit (IC) 10(UM91260 in non-recording playback state and the automatic dial-up circuit) be in off working state, then alerting signal is connected by triode T2 in the interface circuit and telephone line, again through triode T9, T8 and capacitor C 2 meet signal BPF to the signaling testing circuit, after the audio frequency output power amplifier that is made of operational amplifier LM386 in signal pre-processing circuit amplifies to the capacitor C 2 of interface circuit, triode T8, T9 and telephone line are connected, alerting signal makes triode T3 simultaneously, T1 ends, cut off being connected of telephone set and circuit, in order to avoid telephone set is sounded when dialling.The state EOS of pronounciation processing chip T6668 and the state HK of the integrated package UM91260 in the dial-up circuit pass through the Sheffer stroke gate IC6 in the control logic circuit: A, IC5: A, IC5: C, IC5: D produces warning ALM and allows the Sheffer stroke gate IC1 of signal in ALM signal input interface circuit: C, produces the signal (output of IC1: B and IC1: A) of operation circuit break-make.Simultaneously alerting signal is also delivered to the rejection gate IC4 in the control logic circuit: D is with R TONE(dialing tone) the signal HK that triggers UM91260 holds, and it is started working.The HK signal is by IC4: the C output terminal provides, and R TONE signal is by " signaling the detects output " inverter ic 3 in control logic circuit in the signaling testing circuit: A, IC3: B and IC4: A provides.Just begin the number dialing by storage after the HK end of UM91260 is triggered, the collector of the triode T7 in the interface circuit is sent in dial impulse (or double-tone frequently), delivers to the telephone line dialing by triode T2, begins to detect ring-back tone then.Circuit sound is delivered to the signaling testing circuit by triode T5, capacitor C 4, through the filtering circuit of forming by operational amplifier LM324, be coupled to signal demodulation circuit LM567 from capacitor C 14, then provide signaling detection high level signal (R TONE) if receive off hook signal (receive after the echo and do not have the bell electric current again), otherwise provide DT signal (Busy).This signal through IC3: A, IC3: B, deliver to control logic circuit, through IC4: A, IC4: C, IC4: D, again through IC2: D, IC2: C, IC6: C, IC6: D provides playback commencing signal start, the start(that is delivered to T6688 by diode D8, D9 starts) end, control T6668 begins playback.

Voice signal (19 pin of T6668 output, Fout end) through in the signaling testing circuit by operational amplifier LM324(IC8: B, C, D) filtering circuit formed delivers to the note amplifier that is made of operational amplifier LM386 in the signaling pre-process circuit, output send capacitor C 2 in the interface circuit through triode T8, T5 and T2 to telephone line, realize reporting to the police.If the line is busy or other non-logical fault in the dialing back, demodulator circuit LM567 output low level signal (DT, Busy) then, after integrated package CD4538 in control logic circuit latchs, deliver to the HK end of UM91260 by rejection gate IC4: B, IC4: C and IC4: D, make it continue dialing, duplicate detection then is till the other side's off-hook is emitted voice signal.

Below describe the present invention in detail referring to accompanying drawing, in the accompanying drawing:

Fig. 1 is a block scheme of the present invention,

Fig. 2～Fig. 7 is the electrical schematic diagram of each the function square in the above-mentioned block scheme.

At first referring to Fig. 1, automatic dialing speech-sound alarm of the present invention is handled memory circuit 2, signal pre-processing circuit 3, interface circuit 4, signaling testing circuit 5 and automatic dial-up circuit 6 by control logic circuit 1, speech digit and is formed.The state of the comprehensive each several part of control logic circuit provides different steering logics; Speech digit is handled memory circuit and finish depositing of alerting signal and the above-mentioned alerting signal of resetting when being received reset signal; Signal pre-processing circuit carries out filtering and amplification to alerting signal; Interface circuit is finished being connected of alarm and telephone line, for dialing and alerting signal provide signal path automatically; The signaling testing circuit detects the signaling-information in the telephone line; Automatic dial-up circuit is finished transfering automatically of telephone number.

Below describe each circuit function block in the above-mentioned block scheme in detail referring to accompanying drawing 2-7, at first referring to Fig. 2, Fig. 2 is the principle of control logic circuit, the duty of this other circuit of electric circuit inspection, provide control signal to other circuit, these control signals have dial-up circuit automatic dial-up signal (to the HK of dial-up circuit), playback commencing signal (Start(to T6668 starts) end), the A input) and T6668 reset signal (arriving the ACL of T6668) reporting to the police allows signal (IC5: D outputs to IC1:.The concrete work of circuit is as follows:

T6668 state EOS(finishes indication output end) send into the input end of rejection gate IC6: A.Because when T6668 begins recording playback, EOS is a low level, and recording playback finishes back rebound high level, so EOS can indicate the current state of T6668.When T6668 is not in the recording playback state, EOS is a high level, obtain the input of a low level signal as the gate circuit of being made up of rejection gate IC5: A, IC5: B through anti-phase (rejection gate IC6: A is as not gate), another input of gate circuit is that alarm signal A LM(high level is effective).If there is this moment alerting signal to produce, then (IC5: C and IC5: (IC5: the D output terminal), this signal is sent into the input end of the Sheffer stroke gate IC1 in the interface circuit: A to the high level of this gate circuit output D) to obtain high level warning permission signal through the two-stage phase inverter.The EOS signal of IC6: A output is meanwhile sent into IC6: the input end of C, also be input to by IC2 through inverter ic 6: B: an input end (input end of IC2: C) of the rest-set flip-flop that C and IC2: D forms will form the playback signal with other signal at this.

Two input ends of Sheffer stroke gate IC3: A all connect the output of signaling testing circuit.When the signaling testing circuit detects continuous dialing tone, output to IC3: the signal of A input end is to continue low level, this signal is admitted to inverter ic 4: A, its high level output send rejection gate IC4: C to produce low level letter HK, and this low level signal send the HK end of the UM91260 in the automatic dial-up circuit to control its automatic dialing.Meanwhile, integrated circuit CD4538(IC7 is sent in the output of IC3: B: input end A A), and deliver to CD4538(IC7 through a Sheffer stroke gate: input end B B).IC7: A(with resistance R 26 with capacitor C 21) and IC7: B(and resistance R 27 and capacitor C 27) constitute resettable one shot multivibrator, in order to produce broad-adjustable output pulse, its width is by the value decision of R26, C21 and R27, C22.When telephone line is busy tone, it is that 0.35S, dutycycle are 1/2 train of impulses that IC3: B is output as a width, it is the high level signal of 0.35S that this train of impulses send behind the CD4538 at its Q end output width, and this signal is delivered to the base stage of the triode T7 in the interface circuit in order to produce on-hook signal after rejection gate IC4: B is anti-phase.If be the pulse that ring-back tone, then IC3: B was output as lasting 4 seconds, disconnected 1 second, IC7 at this moment in telephone line: the A output low level, through inverter ic 4: B output high level, this high level signal is also delivered to the base stage of triode T7.The ring-back pulse that continues 4 seconds, disconnected 1 second of IC3: B output is also sent into CD4538(IC7 through a phase inverter: B).If user's off-hook, then IC7: B detects this off hook signal and in its Q end output one undersuing, through rejection gate IC6: produce a positive pulse signal behind the D and deliver to speech digit and handle the start(of the T6668 of storage circuit and start) end is so that the playback of control T6668.The low level signal that is produced by IC3: D is used for the T6668 that resets, and makes the T6668 playback finish the back and continues playback.

Fig. 3 is the electrical schematic diagram of interface circuit, and it is made up of triode T1～T8, resistance R 1～R20 and capacitor C 1～C4, C10, finishes being connected of telephone set in alarm and the telephone line, transmits alarm voice.

The input that the warning that control logic circuit produces allows signal to be added in Sheffer stroke gate IC1: C is brought in control and is allowed/forbid to report to the police.(high level is effective for alerting signal, produce by the ALM button) under the control that allows signal of reporting to the police through the conducting of Sheffer stroke gate IC1: C, inverter ic 1: A control triode T4, T2 with end, again through the conducting of inverter ic 1: B control triode T3, T1 with end.When alerting signal, IC1: A is output as a high level signal, makes triode T4, T2 conducting, by triode T5, T6 and T8 and alarm connection.Meanwhile, inverter ic 1: the B output low level is ended triode T3, T1, cuts off being connected of phone and telephone line, in order to avoid telephone set sends the sound when dialling.The dial impulse of dial-up circuit or double-audio signal are connected with circuit by triode T2, alerting signal is exported to the base stage of triode T8 by the power amplifier LM386 in the signal pre-processing circuit, connected by triode T5, T2 and circuit after amplifying, signal is coupled to the signaling testing circuit so that detect various signalings by capacitor C 4 in the telephone line.The alerting signal that alarm button (ALM) produces is also sent into the rejection gate IC4 in the control logic circuit: the input end of C and rejection gate IC5: B produces other steering logic.

Automatic dial-up circuit is made up of integrated circuit UM91260 and peripheral circuit thereof and 3 * 4 telephone keypads, as shown in Figure 4.The 640K crystal oscillator provides work clock, and the HK termination is received the control signal (IC4: C output) from control logic circuit.If IC4: C output low level, then UM91260 sends with the number of storage that (pulse signal is exported by the DP pin automatically, double-audio signal is by the output of TONE pin), the pulse signal of output be sent to triode T7 collector, double-audio signal is sent to the emitter of triode T5 after triode TD1 amplifies.K switch 1 and K2 select mode of operation and pulse duty factor.When MODE SELECT pin during near high level UM91260 be operated in the pulse dialing pattern, otherwise be operated in double-tone pattern frequently.The pulse dutycycle is 1/2 during M/B termination high level, is 2/3 during low level.

Formulating signaling-information exactly is the key that realizes that phone is put through automatically.The signaling testing circuit is promptly finished this function.Fig. 5 is the electrical schematic diagram of signaling testing circuit, as shown in the figure, this circuit mainly is made of operational amplifier LM324 and demodulation of phase locking integrated circuit LM567, be positioned at interface circuit through triode and capacitor C 4() signaling of the coupling telephone line of coming is admitted to by IC8-A(LM324) and capacitor C 11, C12, the bandpass filter that resistance R 39, R40 constitute, its centre frequency is 450Hz, make signaling-information can pass through wave filter, increase demodulation reliability (the switch signaling is the single-tone of the different duty of 450Hz).Wave filter output is through being the input that appearance C14 is coupled to detuner LM567, LM567 is the detuner that is made of phase-locked loop, external resistance R 31, R32, the capacitor C 17 of its 5th, 6 pin determined the centre frequency of LM567 internal voltage controlled oscillator, 1st, 2 pin connect an electric capacity respectively over the ground, form output filter network and loop low-pass network, the 2nd electric capacity that pin connects decision demodulator bandwidth, numerical value is big more, and loop bandwidth is narrow more.Signal through capacitor C 14 couplings enters input end the 3rd pin, and the 8th pin is a logic output terminal.When the 3rd pin input range during greater than signal in bandwidth of a device of 200mV, frequency, the 8th pin becomes low level by high level.In the present invention, if in the telephone line is dialing tone, then the output of 8 pin continues low level, if ring back tone, then 8 pin output width is 1 second, the pulse in 5 seconds cycles, if busy tone, then export width 0.35 second, the pulse in 0.7 second cycle, and give IC3 in the control logic circuit with this signal: the input end of A so that judge the state of telephone line, provides control signal.

Fig. 6 is the schematic diagram that speech digit is handled memory circuit, is made up of pronounciation processing chip T6668 and 4 dynamic storagies, adopts the 32Kbit sampling rate, and the longest recording playback time is 32 seconds.During recording playback switch SW-RP is allocated to recording, will then SW-R.P be allocated to playback by the signal typing of loudspeaker input by start, stop end, T6668 is in tone playing state and provides EOS signal (finish indication output end, high level is effective) by the EOS end.This moment, start held if the above positive pulse of a width 20ms is arranged, and then T6668 is exported the voice signal of storage by the fil-out end, and the signal of recording leaves in 4 dynamic storagies 41256.T6668 and 41256 is through address wire A0～A8, and row choosing, column selection line RAS, CAS1～CAS4 and data input and output Din, Dout connect.

Fig. 7 is the electrical schematic diagram of signal pre-processing circuit, is made up of three grades of filter networks and power amplifier.The voice output of T6668 (T6668 fil-out end) is delivered in three grades of filter networks of being made up of operational amplifier LM324, filtering 300Hz～3.3KHz external noise outputs to the base stage of the triode T8 in the interface circuit after the power amplifier of being made up of operational amplifier LM386 amplifies again and enters telephone line.

Claims (1)

1, automatic dialing speech-sound alarm, it is characterized in that comprising control logic circuit, speech digit processing memory circuit, signal pre-processing circuit, interface circuit, signaling testing circuit and automatic dial-up circuit, control logic circuit is made of the various logical units circuit, the duty of this other circuit of electric circuit inspection, provide control signal to other circuit, these control signals have dial-up circuit automatic dial-up signal, playback commencing signal, reporting to the police allows signal and T6668 reset signal; Under control logic circuit control, be stored in speech digit handle alarm voice signal in the memory circuit through signal pre-processing circuit filtering amplification after interface circuit sends in the telephone line goes; The signaling testing circuit is made of demodulation of phase locking integrated circuit LM567, integrated operational amplifier LM324 and Resistor-Capacitor Unit, and it detects the signaling-information in the telephone line, judges that the line work state is so that send dialing signal exactly; Automatic dial-up circuit dials automatically by predefined number under the control of above-mentioned control logic circuit and signaling testing circuit, so that the most above-mentioned alarm voice signal sends to the side of dialling the number by telephone line.

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