CN2176618Y - voice pager - Google Patents

Abstract

The utility model relates to a voice pager, which comprises a high-frequency inductor, a phone number recognizer, an audio decryptor, an audio amplifier, a recording head and a sounder. The AM/FM receiver chip is used as a high-frequency inductor to demodulate the audio signal, the CPU and the ROM in the phone number recognizer judge the phone number, if the phone number is the local signal, a calling prompt control signal is sent out, and simultaneously, the audio decryptor is started to decrypt, the audio amplifier and the recording head work to record and play the voice signal, the automatic continuous recording is carried out, the recording signal can be replayed, the information is kept after power failure, and the roaming type voice paging in a large range is realized.

Description

Voice calling device

The utility model relates to a kind of speech calling machine, and it belongs to mechanics of communication, particularly a kind of receiving system in the radio-paging.

Along with science and technology development, the mechanics of communication equipment is also brought in constant renewal in, the receiving system conversion at any time in the communication transmission.Radio-paging in the mechanics of communication is widely used at present, its receiving system beeper, after beeper, employing high-frequency inductor, shaping, plane No. identification, sounder sends the call prompting of ",, ", perhaps adopt the shake machine to point out, show on screen with numeral, letter or Chinese character simultaneously.Address code that this beeper is received and information all transmit with code, and Chinese character shows also need be provided with Chinese character base, and all information storage times that are shown are 24 hours, but also can not power down, in case the information of power down storage might be eliminated.

The information signal that the purpose of this utility model is to design a kind of reception is an audio signal, and record or the signal sent all are voice signals after demodulation, and the voice signal of record is not lost because of outage, and can reset, and realizes the speech calling machine of speech calling.

A kind of speech calling machine of the utility model, it is made up of high-frequency inductor, plane No. identifier and sounder, characteristics are its high-frequency inductors by AM/FM Monolithic Receivers chip IC 1 and transformer B1～B5, fieldtron Q1, resistance R 1～R6, capacitor C 1～C5, and ceramic filter C6, C7 form.The plane No. identifier is made up of CMOS one-chip CPU CPUIC3, read-only memory IC4, resistance R 7, capacitor C 8, electronic switch K1, crystal oscillator JZ1.Audio encryptor, audiohead and an audio frequency amplifier are arranged, and the input of audio encryptor is connected to the output of high-frequency inductor, and the input of audiohead and audio frequency amplifier is delivered in output.

Press the voice of the utility model design ₁Beeper can be used existing broadcasting equipment and send AM/FM frequency range carrier signal, and the beeper received audio signal carries out voice suggestion, and recording continuously automatically, information outage keep, and recorded message is reset, and is convenient to realize on a large scale the roaming type paging.

Accompanying drawing of the present utility model is the circuit theory diagrams of speech calling machine.

With reference to this description of drawings embodiment of the present utility model.High-frequency inductor is by IC1, transformer B1～B5, fieldtron Q1, resistance R 1～R6, capacitor C 1～C5, and ceramic filter C6, C7 form.IC1 adopts AM/FM monolithic receiving chip C * 2100 integrated chips, the AM or the FM frequency range that receive transmitting station (broadcasting station) emission are carrier signals, be plane No. code and audio signal,, deliver to plane No. identifier and audio encryptor respectively high-frequency signal detection output restituted signal.The adjustment of its receive frequency obtains by adjusting B1～B4, receives frequency range and presets by the IC3 in the plane No. identifier.The signal that transmitting station is launched is made up of four parts: carrier signal, control signal, audio signal, coded signal, each call cycle (finishing the once task of notifying from a phone call) comprises that four period: T1-begin, T2-plane No., T3-audio signal, interference signal, the T4-stop signal, wherein control signal is in T1, T2, T4 period, and audio signal and interference signal are in the T3 period.

The plane No. identifier is made up of IC3, IC4, resistance R 7, capacitor C 8, electronic switch K1 and JZ1, and it is read-only memory ROM that IC3 adopts CMOS integrated monolithic central processor CPU chip, IC4, and JZ1 is a crystal oscillator.After the restituted signal process shaping by IC1 output, become square-wave pulse and deliver to central processing unit, detect initial signal by CPU, whether and read out from ROM and to judge this machine plane No., this machine plane No. code, beginning and stop signal code have been preset among the IC4, if not this plane No. then continues to detect next initial signal, if this plane No. is then sent the call prompt control signal, connection electronic switch K1 starts audiohead simultaneously and audio frequency amplifier carries out the recording playback sound, starts the speech calling signal after audio encryptor is removed interference signal acquisition deciphering.

Audio encryptor is made up of IC2, resistance R 8, crystal oscillator JZ2, IC2 adopts integrated characteristic frequency filter LHW2040, input is connected to the output of IC1, power end is connected to the output of electronic switch K1, control its work by the control signal of plane No. identifier, demodulated signal is carried out audio signal after frequency discrimination, the filtering output deciphering, flow to the audiohead of audio frequency amplifier simultaneously.

Audio frequency amplifier is made up of IC5, resistance R 10, R11, capacitor C 9～C16, potentiometer W1, and IC5 adopts integrated audio amplifier UPC1218H, and the audio signal after the deciphering is imported by W1, and power end is connected to the output of electronic switch K1.Audiohead is made up of IC6, IC7, resistance R 12～R20, capacitor C 17～C27, potentiometer W2, playback head LY, motor M, IC6 adopts recorder chip TA7709F, IC7 adopts voltage regulator chip NJM2605, audio signal after the deciphering is imported by C17, power end is connected to the output of electronic switch K1, and the voltage stabilizing circuit of being made up of IC7 is motor M voltage stabilizing.When being judged as this machine plane No., the plane No. identifier sends control signal, electronic switch K1 is by logical, when the audio signal after the audio encryptor output deciphering is delivered to simultaneously, send the call voice through the audio frequency amplification by sounder LY, audiohead is opened the storage of recording simultaneously, supply and demand will the time reset, can carry out the recording of 30 or 60 minutes information, automatically recording continuously, the information outage keeps.Audio frequency amplifier and audiohead two parts can adopt miniature radio-cassette player (being commonly called as walkman) movement, audio signal input end is connected to the output of audio encryptor IC2, its power end is connected to the output of electronic switch K1, whether be controlled by the control signal of plane No. identifier, thereby notify from a phone call prompting and information recording if working.

Claims (5)

1, a kind of speech calling machine, form by high-frequency inductor, plane No. identifier, sounder, it is characterized in that said high-frequency inductor by AM/FM Monolithic Receivers chip IC 1 and transformer B1～B5, fieldtron Q1, resistance R 1～R6, capacitor C 1～C5, ceramic filter C6, C7 form; The plane No. identifier is made up of CMOS one-chip CPU CPUIC3, read-only memory ROMIC4, resistance R 7, capacitor C 8, electronic switch K1, crystal oscillator JZ1, audio encryptor, audio frequency amplifier and an audiohead are arranged, the input of audio encryptor is connected to the output of high-frequency inductor, the input of audio frequency amplifier and audiohead is delivered in output, and power end is connected to the output of electronic switch K1.

2,, it is characterized in that said audio encryptor is made up of characteristic frequency filter IC2, resistance R 8, crystal oscillator JZ2 according to the described speech calling machine of claim 1.

3, according to the described speech calling machine of claim 1, it is characterized in that said audio frequency amplifier is made up of integrated audio amplifier chip IC5, resistance R 10, R11, capacitor C 9～C16, potentiometer W1, output is connected input with audio encryptor by W1, and power end is connected with electronic switch K1 output.

4, according to the described speech calling machine of claim 1, it is characterized in that said audiohead is made up of recorder chip IC6, voltage regulator chip IC7, resistance R 12～R20, capacitor C 17～C27, potentiometer W2, playback head LY, motor M, input is connected with audio encryptor output by C17, and power end is connected with the output of electronic switch K1.

5, according to the described speech calling machine of claim 1, it is characterized in that said audio frequency amplifier and audiohead adopt miniature radio-cassette player, the audio signal input is connected to the output of audio encryptor, and power end is connected to the output that electronics is opened K1.