CN2603587Y

CN2603587Y - Phonetic alamr for telephone

Info

Publication number: CN2603587Y
Application number: CN 03202479
Authority: CN
Inventors: 卢加念
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-24
Filing date: 2003-01-24
Publication date: 2004-02-11
Anticipated expiration: 2013-01-24

Abstract

A telephone for voice alarm relates to the telephone alarm technology field. A sound record control side, a sound playing side and an attached telephone line interface of the voice circuit are separately provided with a recording switch circuit, a sound playing switch circuit and an off-hook switch circuit. The controlling side of the recording switch circuit and its electric power outlet side of the electric power circuit composes of a recording port. The port connects with a recording signal input side of the voice circuit. The attached sensor of the port connects with the controlling side of the sound playing switch circuit and the controlling side of the off-hook switch circuit. The utility model can make voice alarm to a set telephone in an emergency. Compared with the prior technology, the utility model has the advantages of having low cost and small size and having good hidden quality.

Description

The voice call alarm

Technical field

The utility model relates to the electrical equipment of telephone call, and especially a kind of predeterminable alarm call number and audio alert content can be by the alarm apparatus of telephone wire to default called phone warning when alert takes place.

Background technology

The structure of existing voice call alarm much all is by the sound circuit with voice record and playback and the existing telephone machine circuit is combined forms.Sound circuit wherein generally is speech IC (the ISD1420 type integrated circuit of producing as American I SD company) or circuit module with voice record and playback, their inside all is provided with memory cell, can stored voice message, even outage also can be preserved memory, and all have recording control end, recorded audio signals input, playback control end and voice signal output.This voice call alarm is owing to be made up of existing telephone circuit and the sound circuit with voice record and playback, therefore, its essence is telephone set and assembly with electronics recording playback machine of memory function, when just receiving a crime report the feelings sensor input signal outside, can transmit dual tone phone number that records in advance and the voice that are used to report to the police from the trend telephone line.Therefore, this class alarm is applicable to and both needs to do telephone relation, the occasion that can report to the police again when being necessary, and much do not need to have the telephone relation function at other, the occasion that only has warning function, if still use this class alarm, the high surplus waste of the function that just seems, and can cause installing inconvenience, disguised poor greatly because of its volume.

Summary of the invention

The purpose of this utility model provides a kind of voice call alarm, and the problem that it mainly solves is to make that its volume is done forr a short time, manufacturing cost is lower.

In order to address the above problem, the scheme that the utility model adopts is: it includes the power circuit that is contained on the circuit board, the external sensor port, external telephone line port, include memory cell and have the recording control end, the recorded audio signals input, the sound circuit of playback control end and voice signal output, the recording control end of described sound circuit is connected to the recording switch circuit of this terminal potential of control, the playback control end of described sound circuit is connected to the playback switch circuit of this terminal potential of control, and described external telephone line port is provided with the off-hook switching circuit of this port break-make of control; The power supply exit of the control end of described recording switch circuit and described power circuit is formed a recording port, and this port is connected with the recorded audio signals input of described sound circuit; Described external sensor port is connected with the control end of described playback switch circuit and the control end of off-hook switching circuit.

Above-mentioned sound circuit can be connected into by the speech IC of ISD1420 type and external resistance, electric capacity thereof, described recording switch circuit is made of triode and collector bias resistance thereof, the base stage of this triode is a control end, of collector electrode and described speech IC Pin connects, emitter is connected with the electronegative potential point of described circuit board, described playback switch circuit is made of triode and collector bias resistance thereof, and the other end of the base resistance of this triode is a control end, of the collector electrode of this triode and described speech IC

Pin connects, emitter is connected with the electronegative potential point of described circuit board, described off-hook switching circuit is by triode and be connected on base biasing resistor and constitute, the collector electrode of one this triode of termination of its external telephone line patch end, another external telephone line patch end connects the emitter of this triode by resistance, and the emitter of this triode is connected with the pin of described speech IC by electric capacity.

Owing to adopted such scheme the utility model compared with prior art to have following beneficial effect:

1, this voice call alarm only connects a dual tone phone when default recording, and in use do not need to be connected with phone, compared with prior art can save telephone circuit and microphone, dial etc., therefore, can reduce manufacturing cost greatly and reduce own vol significantly.

2, because volume can dwindle greatly, therefore, the installation site is flexible, good concealment.

Description of drawings

Fig. 1 is an electrical block diagram of the present utility model.

Embodiment

Below in conjunction with the accompanying drawing example structure of the present utility model is described in further detail:

Among the embodiment shown in Figure 1:

This voice call alarm is provided with recording port one L1, the 1L2 for the recorded speech signal, external sensor port one K1,1K2, external telephone line port 2L1,2L2.

The power circuit of this voice call alarm is connected into by the integrated regulator IC2 of mains switch K1 and 7805 types, and the output of integrated regulator IC2 provides positive 5 volts power supply.

The sound circuit of this voice call alarm is connected into by the speech IC IC1 of ISD1420 type and external resistance R 1, R8, capacitor C 1, C4, C5 thereof, wherein speech IC IC1 1.～6., 9., the 10. address end ground connection of pin, The analog input end of pin and

Be in series with resistance R 1 and capacitor C 1, the between the analog output of pin

The positive 5 volts power supply of analog circuit power supply termination of the digital circuit power end of pin and  pin, the digital grounding end of pin and the analogue ground ground connection of pin, the

The automatic gain control end of pin is by resistance R 8 and capacitor C 5 ground connection.

Speech IC IC1 The recording control end of pin be connected to by triode BG1's and the recording switch circuit that constitutes of collector bias resistance R 2, the base stage of triode BG1 meets recording port one L1; Integrated circuit (IC) 1

The playback control end of pin is connected to the playback switch circuit that is made of triode BG2 and collector bias resistance R 3 thereof, R4, a termination external sensor port one K2 of resistance R 4; Speech IC IC1 The recorded audio signals input of pin is connected to divider resistance R5, R6, R7, and an end of resistance R 7 is connected with recording port one L2 by capacitor C 3, and recording port one L2 also is connected with mains switch K1 by resistance R 9;

Be connected to the off-hook switching circuit that constitutes by triode BG3 and resistance R 10, R11, capacitor C 6 between external telephone line port 2L1, the 2L2 of this voice call alarm, one termination external sensor port one K2 of resistance R 10, the voice signal output of speech IC IC1 pin is connected with the emitter of triode BG3 by capacitor C 2.

When this voice call alarm is recorded before use, turn on the power switch K1, at the words line input of recording port one L1, a dual tone phone machine of 1L2 connection, when this telephone set off-hook, the high potential at power supply VCC place makes triode BG1 conducting by telephone set, and integrated circuit (IC) 1 between language Pin becomes electronegative potential and starts sound-recording function, dial called phone number that set reception report to the police after from microphone input report to the police used voice from telephone set this moment, and these dual tone phone numerical signals and the used voice signal of reporting to the police just can be from recording port one L2, capacitor C 3, resistance R 7, R8 input speech IC IC1 the

The recorded audio signals input of pin is recorded, and can take off telephone set after recording is finished.When this voice call alarm when being used to guard against, turn on the power switch K1, external sensor port one K1,1K2 are connected with the K switch 2 that is used to report to the police, external telephone line port 2L1,2L2 are being connected with local line.When alert took place, K switch 2 was connected, and the high potential at power supply VCC place makes triode BG2, BG3 conducting by external sensor port one K1,1K2, K switch 2, and speech IC IC1 the

Pin becomes electronegative potential and starts player function, simultaneously, the conducting of BG3 is connected external telephone line port 2L1,2L2, alarm call double-tone frequency numerical signal and alarm voice signal break ground that speech IC IC1 pin will be prerecorded are constantly delivered on the external telephone line, report to the police to called phone.

Claims

1, a kind of voice call alarm, it includes the power circuit, external sensor port, the external telephone line port that are contained on the circuit board, include memory cell and have the sound circuit of recording control end, recorded audio signals input, playback control end and voice signal output, it is characterized in that:

The recording control end of described sound circuit is connected to the recording switch circuit of this terminal potential of control, the playback control end of described sound circuit is connected to the playback switch circuit of this terminal potential of control, and described external telephone line port is provided with the off-hook switching circuit of this port break-make of control; The power supply exit of the control end of described recording switch circuit and described power circuit is formed a recording port, and this port is connected with the recorded audio signals input of described sound circuit; Described external sensor port is connected with the control end of described playback switch circuit and the control end of off-hook switching circuit.

2, according to the described voice call alarm of claim l, it is characterized in that:

Described sound circuit is connected into by the speech IC (ICl) of ISDl420 type and external resistance (R1, R8), electric capacity (C1, C4, C5) thereof;

Described recording switch circuit is made of triode (BGl) and collector bias resistance (R2) thereof, and the base stage of this triode (BGl) is a control end, the of collector electrode and described speech IC (ICl)

Pin connects, and emitter is connected with the electronegative potential point of described circuit board;

Described playback switch circuit is made of triode (BG2) and collector bias resistance (R3) thereof, and the other end of the base resistance (R4) of this triode (BG2) is a control end, the of collector electrode of this triode (BG2) and described speech IC (ICI)

Described off-hook switching circuit is by triode (BG3) and be connected on base biasing resistor (R10) formation, the collector electrode of this triode of a termination (BG3) of its external telephone line patch end, another external telephone line patch end connects the emitter of this triode (BG3) by resistance (R11), and the emitter of this triode (BG3) is connected by the pin of electric capacity with described speech IC (IC1).