CN2261125Y - Voice pager with memorizing side-channel communication - Google Patents

Abstract

The utility model relates to a speech pager, which comprises a frequency modulated signal receiving circuit decoding out a data signal group paging code G, an optional paging code S and an audio signal AF. The utility model is characterized in that the group paging code G and the optional paging code S enter a decode controlling circuit to control a memory, a recording module, a BB sound chip, a power amplifying module and a power supply interruption controlling circuit; the audio signal AF enters the recording module and the power amplifying module, to realize recording storage and segment recording and playback of group paging or selective paging. As a result, the speech pager enables a person who carries the pager to directly hear speech from a person who makes a paging call. The utility model has the characteristics of information reliability, time saving and cost saving, and is particularly adequate to be used at night as well as to be used by people with weak eyesight.

Description

The voice paging machine that the subchannel communication can be remembered

The utility model relates to the beep-pager field, the voice paging machine that especially can remember.

At present, the development of relevant beep-pager, existing many both at home and abroad products come out.The function of beep-pager has been not only after the paging both sides' message of in time conversing, and can transmit weather forecast or alarm, quotations on the stock market, and other business information.But the common shortcoming of suchlike beep-pager is can not utilize beep-pager that language is said directly, in time to the phone-holder to listen, give night user or amblyopia power person make troubles.

The purpose of this utility model is at the shortcoming that exists in the prior art, and a kind of voice paging machine that utilizes the subchannel communication to remember is provided, and it can solve the problem that the paging people utilizes beep-pager directly to converse to the phone-holder.

To achieve the above object, the voice paging machine that the subchannel communication of technical solutions of the utility model can be remembered comprises the receiving loop of being made up of the receiver, subcarrier frequency filter and the subcarrier frequency demodulator that receive FM signal.Receiver receives after the FM signal that being undertaken isolating data-signal after twice demodulation by filter and demodulator grouies busy yard G and selective call sign indicating number S, audio signal AF.Its design feature is that described data-signal grouies busy that yard G and selective call sign indicating number S enter the automatic control loop difference control storage, recording piece, BB sound sheet, power amplification piece and the power supply that are formed by single-chip microcomputer and be interrupted control loop.Wherein the power interface of power supply interruption control loop and demodulator joins, and its other end seals in the recording piece after inserting DC boosting piece again, and the outlet and the power amplification piece of BB sound sheet join.Described audio signal AF inserts recording piece and power amplification piece, and the outlet and the power amplification piece of recording piece join.Thereby realize grouping busy or the recording storage of selective call and segmentation recording, playback.

Because the utility model has utilized the FM reception loop of being made up of receiver, filter and demodulator, can directly receive the subchannel signal of f-m broadcast station, the work by decoder directly spreads out of paging people's sound then.Compared with prior art, the user can directly hear paging people's former sound in time, and information is very reliable, need not call back and can act according to circumstances, and has improved work efficiency, has saved the time, has saved spending, and be not subjected to the restriction of languages.Be applicable to the inconvenient area of making a phone call, be particularly useful for night and amblyopia power people's use.

The utility model is described in further detail below in conjunction with accompanying drawing and concrete execution mode.

Fig. 1 is a fundamental diagram of the present utility model;

Fig. 2 and Fig. 3 are physical circuit connection layouts of the present utility model.

Referring to Fig. 1, the voice paging machine that the subchannel communication can be remembered comprises the receiving loop of being made up of the receiver 1, subcarrier frequency filter 2 and the subcarrier frequency demodulator 3 that receive FM signal.Receiver 1 receives after the FM signal that being undertaken isolating data-signal after twice demodulation by filter 2 and demodulator 3 grouies busy yard G and selective call sign indicating number S and audio signal AF.Described data-signal grouies busy that yard G and selective call sign indicating number S enter the automatic control loop difference control storage 5, recording piece 6, BB sound sheet 7, power amplification piece 8 and the power supply that are formed by single-chip microcomputer 4 and be interrupted control loop 10, wherein power supply interruption control loop 10 joins with the power interface of demodulator 3, its other end seals in recording piece 6 after inserting DC boosting piece 9 again, and the outlet and the power amplification piece 8 of BB sound sheet 7 join.Described audio signal AF inserts recording piece 6 and power amplification piece 8, and outlet and the power amplification piece 8 of recording piece 6 join, thereby realization is grouied busy or the recording storage of selective call and segmentation recording, playback.

Referring to Fig. 2 and Fig. 3, Fig. 2 is the circuit connection diagram of the novel radio frequency receiving unit of this reality, and the annexation of concrete circuit is as follows: by the main carrier frequency of f-m broadcast station emission by squaerial and tunable capacitor C ₁, capacitor C ₂The resonant tank of forming receives, and curbs frequency modulation section signal in addition, delivers to the dual bar field effect triode Q that noise factor is low and gain high ₁And Q ₂Making high frequency amplifies.Triode Q ₁, Q ₂Load be by oscillator coil L ₁And L ₂And capacitor C ₃And C ₅The shunt-resonant circuit of forming is selected the high-frequency signal after amplifying, and passes through capacitor C ₄A pin of delivering to the receiving chip CXA1191 that is operated in the frequency modulation state send mixer.The frequency of the utility model oscillator is by external crystal oscillator J ₁Decision requires crystal oscillator frequency stability to want high, to guarantee working stability.The external crystal-controlled oscillation signal is exported first intermediate-freuqncy signal from receiving chip CXA1911 input mixer and main carrier frequency mixing, through ceramic filter FL ₁Selection, enter intermediate frequency amplifier and amplify, and through frequency discriminator FL ₂Finish demodulation for the first time.Receiving chip CXA1191 output composite signal is that stereophonic signal and subchannel communication signal are through capacitor C ₂₀And C ₂₁And oscillator coil L ₅The frequency selection circuit of forming is selected the subcarrier frequency signal of subchannel communication signal, through triode Q ₃Amplify and by oscillator coil L ₆, capacitor C ₂₈The frequency selection circuit of forming screens once more after capacitor C ₂₇Deliver to receiving chip MC3367 and send frequency mixer.External crystal oscillator J ₂And capacitor C ₂₄, C ₂₅The oscillation circuit of forming produces the second local frequency signal and carries out mixing with subcarrier frequency signal to the frequency mixer of sending the subchannel communication that comes to, produces second intermediate-freuqncy signal, through ceramic filter FL ₃And FL ₄Filtering, again through in put, frequency discrimination, low frequency amplify and be reduced to the voice messaging that subcarrier frequency carries, from the circuit diagram of the decoder combination of receiving chip MC3367 output audio signal AF to Fig. 3.Equally, from the subchannel communication secondary frequently the data-signal that comes out of demodulation group busy that yard G and selective call sign indicating number S also export to the circuit diagram of decoder combination of Fig. 3 from receiving chip MC3367.Fig. 3 is the circuit connection diagram of decoder built-up section of the present utility model, the work of decoder built-up section is mainly controlled by single-chip microcomputer PIC16C16, described data-signal grouies busy that yard G and selective call sign indicating number S parallel connection are input among the single-chip microcomputer PIC16C61, again by storing among the single-chip microcomputer PIC16C61 input store 24LC01.Single-chip microcomputer PIC16C61 exports a square wave, through resistance R 16 to triode Q ₅Amplify and be input to triode Q ₄Make it be interrupted conducting, by triode Q ₄The break-make of control radio frequency receiving unit power supply RF.Make it that a bit of time service be arranged in square wave time one-period, a long time outage is beneficial to power saving.When grouping busy, single-chip microcomputer PIC16C61 output is grouied busy a yard G, is translated and group busy code control signal, through resistance R ₁₈To triode Q ₇Amplify, make triode Q ₆Conducting is added in the power amplification piece 7050 power supply.Meanwhile, single-chip microcomputer PIC16C61 sends control signal and passes through resistance R ₃₄, triode Q ₁₀, resistance R ₂₃, triode Q ₁₁Be amplified to BB sound sheet PP work, send BB sound.After the BB sound, audio signal AF is through resistance R ₂₃Deliver in the power amplification piece 7050 and amplify, promote loudspeaker SP and sound.This kind operating state is not recorded, and can make broadcast receiver and use.During selective call, single-chip microcomputer PIC16C61 receives the laggard row decoding of selective call sign indicating number S, and outputs control signals to recording piece ISD1420 to guarantee making recording piece ISD1420 begin the segmentation recording, and every section End of Tape is exported control signal again through triode Q ₁₀, Q ₁₁Be amplified to BB sound sheet PP, BB sound sheet PP and power amplification piece 7050 are connected.Control signal is also through triode Q simultaneously ₆Opening power amplification piece 7050 emits BB sound.After the phone-holder hears BB sound, press and be serially connected in the player button AN that is connected in series in the single-chip microcomputer PIC16C61 control circuit ₃, can hear voice messaging, operation player button AN ₃Can listen to each section and seek the message breath.In addition, power supply E is directly via oscillator coil L ₈, capacitor C ₃₆, oscillator coil L ₉The filter of forming is to DC boosting piece MAX631, and the DC power supply of DC boosting piece MAX631 output 4.8～5V is used for recording piece ISD1420.Also be serially connected with power knob AN in the control loop of single-chip microcomputer PIC16C61 respectively ₁, BB acoustic vibration button AN ₂And the vibrating alert motor D, its function is identical with existing BB machine, does not give unnecessary details one by one at this.

When using the utility model, the paging people is imported voice into paging centers by phone, paging centers inputs to the broadcasting station frequency modulated transmitter with voice signal, frequency modulated transmitter can utilize idle secondary channel 57KHZ, 67KHZ, 92KHZ or 85KHZ emission FM signal, and the phone-holder can hear paging people's former voice in time.

Claims (4)

1. voice paging machine that the subchannel communication can be remembered, it comprises by the receiver (1) that receives FM signal, the receiving loop that subcarrier frequency filter (2) and subcarrier frequency demodulator (3) are formed, receiver (1) receives after the FM signal that being undertaken isolating data-signal after twice demodulation by filter (2) and demodulator (3) grouies busy yard G and selective call sign indicating number S, audio signal AF, it is characterized in that, described data-signal grouies busy that yard G and selective call sign indicating number S enter the automatic control loop difference control storage (5) that is formed by single-chip microcomputer (4), recording piece (6), BB sound sheet (7), power amplification piece (8) and power supply are interrupted control loop (10), wherein power supply interruption control loop (10) joins with the power interface of demodulator (3), its other end seals in recording piece (6) after inserting DC boosting piece (9) again, and the outlet of BB sound sheet (7) and power amplification piece (8) join; Described audio signal AF inserts recording piece (6) and power amplification piece (8), and the outlet and the power amplification piece (8) of recording piece (6) join, thereby realization is grouied busy or the recording storage of selective call and segmentation recording, playback.

2. according to the described voice paging machine of claim 1, it is characterized in that the specification of the surface-mounted integrated circuit of described single-chip microcomputer (4) is PIC16C61; The specification of the surface-mounted integrated circuit of memory (5) is 24LC01; The specification of the surface-mounted integrated circuit of recording piece (6) is ISD1420; The specification of the surface-mounted integrated circuit of power amplification piece (8) is 7050; The specification of the surface-mounted integrated circuit of DC boosting piece (9) is MAX631.

3. according to the described voice paging machine of claim 2, it is characterized in that, it is by square wave of single-chip microcomputer (4) output that described power supply is interrupted control loop (10), is input to triode Q4 through resistance R 16 to triode Q5 amplification and makes the loop be interrupted conducting, the break-make of power supply RF in the control receiving loop.

4. according to claim 1,2 or 3 described voice paging machines, it is characterized in that the secondary channel that described receiving loop can receive f-m broadcast station is 57KHZ, 67KHZ, 92KHZ or 85KHZ.

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