CN2254255Y - Digital signal speech pager - Google Patents

Abstract

The utility model relates to a digital signal voice pager, which is characterized in that the digital signal speech pager is composed of a high-frequency amplifying receiving circuit (3), an intermediate-frequency conversion circuit (4), a digital decoder circuit (5), a logic control circuit (6) which comprises a timing control circuit, a power saving circuit, an undervoltage indicating circuit, a voltage converting circuit and a power source, and a voice storage circuit (7). Adopting digital signals to realize voice paging, the utility model has the characteristics of simple circuits, small size, low cost, less power consumption, high reliability, etc.

Description

Digital signalling voice paging machine

The utility model relates to a kind of digital signalling voice paging machine, belongs to communication technical field.

Existing alphanumeric pager, can only transmit the information and the telephone number of arranging on the code book, most users can only be by calling back, further obtain required information, the long and trouble of the acquisition process of information, and Chinese pager can only be imported Chinese character encoding by manual board, can't accomplish the subscriber dialing automatic paging.Domestic existing voice paging machine adopts double-tone frequently on coded system at present, therefore on beep-pager, need double-tone decoding circuit frequently, caused complex circuit, cost height, poor reliability, power consumption big, owing to there is these shortcoming, this class voice paging machine is actual as yet to be used.

The purpose of this utility model is to overcome the shortcoming of above-mentioned beep-pager, provides a kind of simple in structure, and cost is low, adopts the voice paging machine of digital signalling.

The utility model amplifies receiving circuit (3), intermediate frequency conversion circuit (4), digital decoding circuit (5), logic control circuit (comprising timing control circuit, power save circuit, voltage conversion circuit, under-voltage indicating circuit, power supply) (6), voice memory circuit (7) by high frequency and forms.This machine is a 150MHZ frequency range double conversion receiver, receive the narrow-band FM signal, receiving circuit adopts superhet in the machine, the radiofrequency signal that receives from loop aerial is through amplifying, the intermediate-freuqncy signal that first mixing obtains, again through second mixing, in put, amplitude limit, demodulation, output signal after the audio frequency filtering, gone out digitally encoded signal by frequency discrimination, coded digital signal is delivered to the decoder synchronous decoding, and judge whether the address of paging sign indicating number of receiving is identical with this machine address code, can confirm that as if identical this paging information is to call out this machine, by timing control circuit control voice memory circuit recording audio signal, one section voice messaging is stored then, send ringing tone (BB sound) simultaneously, if address code is inequality, then this machine does not respond.By selector switch, realize playback and the selection of each sound.Owing to adopt voltage conversion circuit and power save circuit, solved two difficult points of beep-pager low voltage power supply and power conservation techniques.

Accompanying drawing is a line map of the present utility model

Below in conjunction with the drawings and specific embodiments to further detailed explanation of the utility model.

The digital signalling voice paging machine circuit that accompanying drawing is described is made up of high frequency amplification receiving circuit, intermediate frequency conversion circuit, digital decoding circuit, logic control circuit (comprising timing control circuit, power save circuit, voltage conversion circuit, under-voltage indicating circuit, power supply), voice memory circuit.Mainly comprise resistance R 1～R40, capacitor C 1～C52, electrochemical capacitor E2～E9, diode D1～D4, triode Q1～Q8, loop aerial I1, I2, inductance I3～I12, crystal body Y1, Y2, filter FL1～FL3, switch S 1, S3, S4, light-emitting diode L1, loudspeaker S5, buzzer B2, battery B1, integrated package FM reception chip IC 1, digital decoding chip IC 2, d type flip flop chip IC 3, the integrated chip IC 4 of numeral, voltage transformation chip IC 5, voice storage chip IC6, voltage monitor IC7, music triode IC8 adopts MC3367 respectively, MC145030, CD4013, CD4093, MAX777,9F26, AN051.Connected mode and function corresponding between the above-mentioned five bulk circuit are as follows: high-frequency amplifier circuit is connected with the 3rd pin of FM reception chip IC 1 in the intermediate frequency conversion circuit by (1), becomes the output channel of intermediate-freuqncy signal; The power supply that high frequency amplifies receiving circuit is connected with the C utmost point of triode Q5 by (2), the 14th pin of decoding chip IC2 is connected with battery B1 is anodal in the e utmost point of Q5 and the digital decoding circuit, VE is provided (2.4), the base stage of Q5 is connected with parallel resistor R26, R27, the other end of R27 is connected with the 3rd pin of digital integrated chip IC 4 in the power save circuit of logic control circuit, the other end of R26 is connected with the C utmost point of triode Q6, and the base stage of Q6 is connected with resistance R 28.The other end of R28 is connected with the 12nd pin of the d type flip flop chip IC 3 of the timing control circuit of logic control circuit, is used for finishing economize on electricity control; The 22nd pin of FM reception chip IC 1 is connected with capacitor C 45, and the C45 other end is connected with the 20th pin of IC6 in the voice memory circuit, becomes audio frequency output channel; The 15th pin of FM reception chip IC 1 is connected with capacitor C 44, and the other end of C44 is connected with the 12nd pin of decoding chip IC2, becomes the data output channel; Cross-over connection resistance R 13 between the 9th pin of FM reception chip IC 1 and the 16th pin, resistance R 14 is connected across between the 18th pin and the 24th pin of IC1, the 16th pin of IC1 and the 18th pin are connected the back and are connected with the C utmost point of triode Q5, are used for finishing the power supply supply of the intermediate frequency conversion circuit that economize on electricity controls; The 13rd pin of decoding chip IC2 is connected with capacitor C 47, and the other end of C47 is connected with the 13rd pin of d type flip flop chip IC 3, and the 27th pin with voice storage chip IC6 is connected again, is used for finishing the transmission of recording playback switching signal; The 15th pin of decoding chip IC2 is connected with the negative pole of electrochemical capacitor E4, and the positive pole of E4 is connected with the 6th pin of d type flip flop chip IC 3, is used for finishing when the signal output that receives when conforming to this machine address code, the upset of control d type flip flop; The 12nd pin of d type flip flop chip IC 3 and the positive pole of electrochemical capacitor E6 join, the negative pole of E6 is connected with the 12nd pin of resistance R 31 and digital integrated chip IC 4, the other end ground connection of R31, the 11st pin of the integrated chip IC 4 of numeral is connected with resistance R 32, the other end of R32 is connected with the base stage of triode Q7, the emitter of Q7 is connected with power conversion chip IC 5 the 6th pin power supply VC, the C utmost point of Q7 is connected with the 1st pin of Music Clip IC8, the 2nd pin ground connection of IC8, the 3rd pin connecting resistance R34 of IC8, the base stage of another termination triode Q8 of R34, the C utmost point of Q8 meets buzzer B2, is used for finishing the prompt tone control when fresh information is imported; The 14th pin of the integrated chip IC 4 of numeral is connected with the 6th pin of voltage transformation chip IC 5, is used to provide power supply VC; The 1st pin of voltage monitoring chip IC 7 is connected with battery B1 is anodal, IC7 the 2nd pin ground connection, IC7 the 3rd pin connects resistance R 33, the end of R33 is connected with the base stage of triode Q7, and the emitter of Q7 is connected with power conversion chip IC 5 the 6th pin power supply VC, and the C utmost point of Q7 is connected with the 1st pin of Music Clip IC8, the 2nd pin ground connection of IC8, the base stage of another termination triode Q8 of the 3rd pin connecting resistance R34, the R34 of IC8, the C utmost point of Q8 meets buzzer B2, is used for finishing the prompt tone control when fresh information is imported; The 14th pin of the integrated chip IC 4 of numeral is connected with the 6th pin of voltage transformation chip IC 5, is used to provide power supply VC; The 1st pin of voltage monitoring chip IC 7 is connected with battery B1 is anodal, IC7 the 2nd pin ground connection, and IC7 the 3rd pin connects resistance R 33, and the other end of R33 is connected with the base stage of triode Q7, is used for finishing the line under-voltage prompting; The 5th pin of voice storage chip IC6 and the 9th pin are connected back and switch S 4 the 4th and are connected, the 24th pin of IC6 is connected with an end of switch S 3, ground connection after the other end of S3 and S4 the 3rd is connected, second negative pole with battery B1 of S4 is connected, and is used for finishing that two segments are selected and playback is controlled; The 25th pin of voice storage chip IC6 is connected with resistance R 40, and the other end of R40 is connected with the negative pole of light-emitting diode L1, and the positive pole of L1 is connected with VC, with the luminous prompting of finishing when received signal is recorded.

High frequency amplify receiving circuit by antenna, height put, first local oscillator, mixing, bandwidth-limited circuit form.Mainly comprise resistance R 1～R11, capacitor C 1～C15, C17～C24, C26～C29, C51, C52, loop aerial I1, I2, diode D1, triode Q1～Q4, inductance I3～I9, crystal Y1, filter FL1.Their connected mode and function corresponding are as follows: loop aerial I2, capacitor C 1, loop aerial I1, be serially connected in order, the other end ground connection of I2, capacitor C 2, the C4 of another termination parallel connection of I1, another termination capacitor C 5 and the capacitor C 3 of C2, C4 in parallel, the base stage of another termination triode Q1 of C5, the other end ground connection of C3, capacitor C 5 is connected the negative pole of diode with the contact of Q1 base stage, the plus earth of D1 is used for forming this machine antenna system; C1, C2, C4 are that its tuning electrical equipment is protected diode from the radiofrequency signal that antenna receives by the base stage D1 that C3, C5 composition impedance matching network is coupled to radio frequency amplifier Q1, prevents undersuing damage Q1; The e utmost point ground connection of triode Q1, the C utmost point connects the e utmost point of triode Q2, the C utmost point of Q2 connects capacitor C 11, another termination inductance I4 of C11, the base stage of another termination triode Q4 of I4, the amplifying signal that the C utmost point from Q2 that makes is exported forms tuning circuit by coupling capacitance C11 to I4, and the base stage that is impedance-matched to the first mixer tube Q4 is provided, and this resonant tank is tuned in same frequency simultaneously; Local oscillation circuit is by triode Q3, compositions such as crystal Y1 and tuning coil electric capacity, crystal Y1 and resistance R 5 backs in parallel and capacitor C 14 in parallel, C15 connects, Y1 in parallel, the other end ground connection of R5, C14 in parallel, another termination inductance I5 of C15, the base stage of another termination triode Q3 of I5, the C utmost point of Q3 meets inductance I7, connect the base stage of triode Q4 behind the one termination capacitor C21 of controllable impedance I7 output, the other end series resistor R8 of I7 output, connect the base stage of triode Q2 behind the R3, the e utmost point ground connection of triode Q4, the C utmost point is connected on the input of ceramic filter FL1, the output termination inductance I9 of FL1, another termination capacitor C 29 of I9, the 3rd pin of another termination FM reception chip IC 1 of C29, I7 and C20 are tuning to be transferred in local oscillation signal.

Intermediate frequency conversion circuit mainly comprises resistance R 12～R21, capacitor C 30, C32～C36, C38～C45, C50, E2, E3, inductance I10, I11, crystal Y2, filter FL2, FL3 integrated package FM reception chip IC 1.Their connected mode and function corresponding are as follows: the 1st pin of FM reception chip IC 1 connects the other end ground connection of capacitor C 30 C30; The 2nd pin of FM reception chip IC 1 and the 23rd pin cross-over connection filter FL2; The 4th pin of IC1 connects the other end ground connection of capacitor C 32 C32; Connect capacitor C 33, other end ground connection after crystal Y2 and resistance R 12 are in parallel, another termination inductance I10 of C33, the 5th pin of another termination IC1 of I10, I10 is connected capacitor C 36 with the contact of C33, the 6th pin of another termination IC1 of C36; The 6th pin of IC1, the 7th pin connect ground connection behind capacitor C 34, the C35 respectively; The 8th pin ground connection of IC1; The 9th pin of IC1 connects the positive pole of electric capacity E2, the minus earth of E2; The 10th pin of IC1 serial connection capacitor C 42 connects IC1 the 26th pin behind resistance R 19 R17, be connected the 21st pin of IC1 behind the contact series resistor R20 of C42 and IC1 the 10th pin, R16, the R15; R20 is connected capacitor C 43 with the contact of R16, the other end ground connection of C43, and R16 is connected capacitor C 39 with the R15 contact, the 22nd pin of another termination IC1 of C39, R19 is connected capacitor C 41 with the contact of R17, the 27th pin of another termination IC1 of C41; The 11st pin of IC1 is connected with capacitor C 50, C50 other end ground connection, and IC1 the 11st pin is connected capacitor C 40 with the contact of C50, the 12nd pin of another termination IC1 of C40; The 12nd pin of IC1 connects inductance I11, the resistance R 18 that is connected in parallel, another termination capacitor C 50 back ground connection of I11 in parallel, R18; The 13rd pin ground connection of IC1; The 14th pin of IC1 connects the negative pole of electric capacity E3, the positive pole of E3 connects the 27th pin of IC1; Cross-over connection filter FL3 between the 25th pin of IC1 and the 28th pin; The 26th pin of IC1 connects capacitor C 38, the other end ground connection of C38; Be used for finishing functions such as intermediate frequency amplification, amplitude limit, frequency discrimination, audio frequency amplification, filtering, the intermediate-freuqncy signal of generation 455KHZ after first intermediate-freuqncy signal of FL1 and C29 coupling and the second local oscillator beat that receives from IC1 the 3rd pin, put device in the secondary by ceramic filter FL2, FL3 and IC1 inside, further suppress monkey chatter.

Decoding circuit comprises resistance R 22, R23, capacitor C 46, C47, E4, switch S 1, integrated package decoding chip IC2.Their connected mode and function corresponding are as follows: the 17th pin ground connection of decoding chip IC2; Cross-over connection is connected between the 18th pin of IC2 and the 20th pin resistance R 23, R22; R23 is connected capacitor C 46 with the contact of R22, the 19th pin of another termination IC2 of C46; The the 1st to the 10th pin of IC2 connects switch S 1, by being connected between each pin, finishes the coding of each beep-pager self.

Logic control circuit is made up of timing controlled, power save circuit, voltage conversion circuit, under-voltage indicating circuit, power supply.Mainly comprise resistance R 24～R35, capacitor C 49, E5-E7, E9, diode D2～D4, triode Q5～Q8, inductance I12, integrated package d type flip flop IC3, digital integrated chip IC 4, voltage transformation chip IC 5, voltage monitor IC7, music triode IC8, buzzer B2, battery B1.Their connected mode and function corresponding are as follows: the 1st pin of d type flip flop chip IC 3 connects the 10th pin, after its contact meets the diode D5 (negative pole of D5 up) and resistance R 25 that is connected in parallel, the other end ground connection of in parallel D5, R25 and connect the 4th pin of IC3, the 2nd pin of IC3 connects the 8th pin; The 3rd pin of IC3 connects the 7th pin and the 11st pin; The 5th pin of IC3 connects the 9th pin; The 14th pin of IC3 connects the 6th pin of IC5, obtains power supply VC (5V) and supplies with; The 1st pin, the 5th pin, the 13rd pin of the integrated chip IC 4 of numeral link together; Resistance R 30 and diode D2 be anodal connect and resistance R 29 with after diode D4 negative pole is connected, both parallel connections are the 2nd pin and the 4th pin of the last termination IC4 of parallel connection then, the 6th pin of following termination IC4; The 7th pin ground connection of IC4; The 3rd pin that is connected IC5 after the 1st pin of voltage transformation chip IC 5 is connected with the 2nd pin with the positive pole of battery B1 is connected back ground connection with the 4th pin; The 5th pin of IC5 meets inductance I12, another termination battery B1 positive pole of I12; The 7th pin connecting resistance R35 of IC5, the positive pole of another termination battery B1 of B25.Under-voltage prompting is finished by IC7, and when voltage was lower than 2.3V, the 3rd pin of IC7 becomes low level made the Q7 conducting, IC8 energising and the BP sound that B2 sent do not stop; Fresh information input prompt sound is made up of one of them Schmidt of IC4, and to electric capacity E6 charging, time constant is by the R31 decision of E6, selected about 3 seconds of this machine through resistance R 31 for the high level of IC3 the 12nd pin when information is imported.

The voice memory circuit comprises resistance R 36～R40, capacitor C 48, B8, light-emitting diode L1, loudspeaker S5, switch S 3, S4, integrated package voice storage chip IC6.Their connected mode and function corresponding are as follows: the 1st, 2,3,4,6,10 pin of IC6 are crossed mutually and are connect back ground connection, and they connect the negative pole of electrochemical capacitor E8 simultaneously again, and the positive pole of E8 connects the 6th pin of voltage transformation chip IC 5; The 5th pin of IC6 is with after the 9th pin is connected, connecting resistance R39, the 6th pin of another termination IC5 of R39; Between the 14th pin and the 15th pin of IC6, cross-over connection loudspeaker S5; The 16th pin of IC6 connects the 6th pin of IC5; The 19th pin of one termination IC6 of parallel resistor R38, capacitor C 48, other end ground connection; Cross-over connection resistance R 37 between the 23rd pin of IC6 and the 28th pin, cross-over connection resistance R 36 between the 24th pin and the 28th pin; Receive the number of oneself when this machine after, the high level that IC2 sent makes the IC3 upset, the 12nd pin of IC3 becomes high level, the 13rd pin becomes low level, because of the 27th pin of the 13rd pin and IC6 link together (being recording playback conversion), after recording circuit was started working 10 seconds, IC3 the 13rd pin preset recovered original tone playing state, this machine divides two sections, S4 beat 10 seconds one period of last one grade of time-divisions, and S4 beats another section of next grade time-division 10 seconds, the 25th pin sending and receiving light pipe L1 of IC6, when having only the received signal recording state, luminous tube L1 is luminous, during playback whenever by a switch S 3, just can playback one time 10 seconds.

Working method of the present utility model is as follows: the antenna system of high band (VHF) receiver is made up of loop aerial I1, I2 and capacitor C 1, C2, C3, C4, C4 forms resonant tank by tunable capacitor, form the input of antenna match by fixed capacity C3 and C5, regulate the operating frequency that C4 can be tuned to antenna loop receiver to amplifier Q1.RF signal process C5 is coupled to the input of RF amplifier Q1, and D1 is the protection diode, prevents undersuing damage Q1.Form tuning circuit by coupling capacitance C11 to I4 from the amplifying signal of Q2 collector electrode output, the base stage that is impedance-matched to the first mixing Q4 is provided, this resonant tank is tuned in same frequency simultaneously, has strengthened selectivity and sensitivity.

RF signal after the amplification is added the base stage of mixer tube Q4, is added to the base stage of mixer tube Q4 by the oscillator signal of crystal Y1 and Q3 generation.Crystal Y1 works on the 67.4MHZ frequency.The selection of its operating frequency is determined by the RF carrier frequency that receives, Q4 tuning two radiofrequency signals of I4, and first local oscillation signal and carrier signal, they are sent to the Q4 base stage of mixer tube.The output of high-frequency conversion circuit is taken out by the C utmost point of Q4, existing four radiofrequency signals, it is poor that the subharmonic of RF carrier signal, second local oscillator, two signal sums, two are believed, the frequency of two signal beats is 21.7MHZ, the intermediate-freuqncy signal that the C of mixer tube Q4 extremely goes up is exported through I8, also is used for the impedance matching of filter FL1.The first local oscillator crystal Y1 is a work 57-76MHZ high stability element.Export through C21 frequently through amplifying the secondary letter, signal is sent to the first mixer tube Q4 again.Crystal filter FL1 is that a resonance is in the high band acceptor of the Q of intermediate frequency value.According to carrier frequency, intermediate frequency is elected 21.7MHZ or 21.4MHZ as.Be coupled to the 3rd pin of ic chip 1 by first intermediate-freuqncy signal of filter output through FI1 and C29, it with the second local oscillator beat after the intermediate-freuqncy signal of generation 455KHZ.And put device in the secondary by ceramic filter FL2, FL3 and IC1 inside and further reduce unnecessary signal, improved the selectivity of complete machine.

Signal after the demodulation is sent into the buffer amplifier of IC1 inside after filtering, send into voice storage chip IC6 the 20th pin from the audio signal that the 22nd pin of IC1 is exported.The data-signal of IC1 output is sent into the 12nd pin of decoder IC2 through capacitor C 44.

IC3, IC4, IC6 directly are connected on the VC power supply.Because of the power consumption of these several circuit seldom (about 100 μ A), IC1, and height put receiving circuit and meet economize on electricity control output end VE and controlled by power save circuit.IC4 is connected into Schmidt's oscillating circuit, and duty ratio is 8: 1 (just at work 200ms rest 800ms).When paging decoder conformed to condition, IC2 the 15th pin output high level made the IC3 upset, and IC3 the 12nd pin becomes high level, triode Q5 conducting, and its emitter output 2.4V voltage is for receiving unit, and IC3 resets after 10 seconds.IC3 the 12nd pin becomes low level, and Q5 works in electricity-saving state again.Under-voltage prompting is finished by IC7.The 3rd pin of IC7 becomes low level and makes the Q7 conducting when voltage is lower than 2.3V, IC8 energising and the BP sound that B2 sent do not stop.

Fresh information input prompt sound is made up of one of them Schmidt of IC4.Principle is when information is imported, and to the E6 charging, time constant is by E6 and R31 decision, selected about 3 seconds of this machine through resistance R 31 for the high level of IC3 the 12nd pin.

Receive the number of oneself when this machine after, the high level that IC2 sent makes the IC3 upset.The 12nd pin of IC3 becomes high level, and the 13rd pin of IC3 becomes low level, and because of the 13rd pin and IC6 the 27th pin connect (recording playback conversion just), after recording circuit was started working 10 seconds, the 13rd pin preset recovered original tone playing state.This machine divides two sections, and S4 beat 10 seconds one period of last one grade of time-divisions.S4 beat next grade time-division another the section 10 seconds.The 25th pin sending and receiving light pipe L1 of IC6, when having only the received signal recording state, luminous tube L1 is luminous.Whenever press a S3 switch during playback with regard to playable one time 10 seconds.

The serial data that receives, after shaping, amplification, give IC2 the 12nd pin, when conforming to decode condition, IC2 the 15th pin output high level, make IC3 upset and locking Q5 conducting, keep always that IC3 resets after 10 seconds, receiver continues to operate in normal power saving operation state, and expectation is next time with the appearance of code data.

Claims (10)

1. digital signalling voice paging machine is characterized in that: it amplifies receiving circuit, intermediate frequency conversion circuit, digital decoding circuit, logic control circuit, voice memory circuit by high frequency and forms; High-frequency amplifier circuit is connected with the 3rd pin of FM reception chip IC 1 in the intermediate frequency conversion circuit by (1), becomes the output channel of intermediate-freuqncy signal; The power supply that high frequency amplifies receiving circuit is connected with the C utmost point of triode Q5 by (2), the 14th pin of decoding chip IC2 is connected with battery B1 is anodal in the e utmost point of Q5 and the digital decoding circuit, VE (2 is provided, 4), the base stage of Q5 and parallel resistor R26, R27 connects, the other end of R27 is connected with the 3rd pin of digital integrated chip IC 4 in the power save circuit of logic control circuit, the other end of R26 is connected with the C utmost point of triode Q6, the base stage of Q6 is connected with resistance R 28, the other end of R28 is connected with the 12nd pin of the d type flip flop chip IC 3 of the timing control circuit of logic control circuit, is used for finishing economize on electricity control; The 22nd pin of FM reception chip 1C1 is connected with capacitor C 45, and the C45 other end is connected with the 20th pin of IC6 in the voice memory circuit, becomes audio frequency output channel; The 15th pin of FM reception chip IC 1 is connected with capacitor C 44, and the other end of C44 is connected with the 12nd pin of decoding chip IC2, becomes the data output channel; Cross-over connection resistance R 13 between the 9th pin of FM reception chip IC 1 and the 16th pin, resistance R 14 is connected across between the 18th pin and the 24th pin of IC1, the 16th pin of IC1 and the 18th pin are connected the back and are connected with the C utmost point of triode Q5, are used for finishing the power supply supply of the intermediate frequency conversion circuit that economize on electricity controls; The 13rd pin of decoding chip IC2 is connected with capacitor C 47, and the other end of C47 is connected with the 13rd pin of d type flip flop chip IC 3, and the 27th pin with voice storage chip IC6 is connected again, is used for finishing the transmission of recording playback switching signal; The 15th pin of decoding chip IC2 is connected with the negative pole of electrochemical capacitor E4, and the positive pole of E4 is connected with the 6th pin of d type flip flop chip IC 3, is used for finishing when the signal output that receives when conforming to this machine address code, the upset of control d type flip flop; The 12nd pin of d type flip flop chip IC 3 and the positive pole of electrochemical capacitor E6 join, the negative pole of E6 is connected with the 12nd pin of resistance R 31 and digital integrated chip IC 4, the other end ground connection of R31, the 11st pin of the integrated chip IC 4 of numeral is connected with resistance R 32, the other end of R32 is connected with the base stage of triode Q7, the emitter of Q7 is connected with power conversion chip IC 5 the 6th pin power supply VC, the C utmost point of Q7 is connected with the 1st pin of Music Clip IC8, the 2nd pin ground connection of IC8, the 3rd pin connecting resistance R34 of IC8, the base stage of another termination triode Q8 of R34, the C utmost point of Q8 meets buzzer B2, is used for finishing the prompt tone control when fresh information is imported; The 14th pin of the integrated chip IC 4 of numeral is connected with the 6th pin of voltage transformation chip IC 5, is used to provide power supply VC; The 1st pin of voltage monitoring chip IC 7 is connected with battery B1 is anodal, IC7 the 2nd pin ground connection, and IC7 the 3rd pin connects resistance R 33, and the other end of R33 is connected with the base stage of triode Q7, is used for finishing the line under-voltage prompting; The 5th pin of voice storage chip IC6 and the 9th pin are connected back and switch S 4 the 4th and are connected, the 24th pin of IC6 is connected with an end of switch S 3, ground connection after the other end of S3 and S4 the 3rd is connected, second negative pole with battery B1 of S4 is connected, and is used for finishing that two segments are selected and playback is controlled; The 25th pin of voice storage chip IC6 is connected with resistance R 40, and the other end of R40 is connected with the negative pole of light-emitting diode L1, and the positive pole of L1 is connected with VC, with the luminous prompting of finishing when received signal is recorded.

2, digital signalling voice paging machine according to claim 1 is characterized in that: high frequency amplify receiving circuit by antenna, height put, first local oscillator, mixing, bandwidth-limited circuit form; Mainly comprise resistance R 1～R11, capacitor C 1～C15, C17～C24, C26～C29, C51, C52, loop aerial I1, I2, diode D1, triode Q1～Q4, inductance I3～I9, crystal Y1, filter FL1; Loop aerial I2, capacitor C 1, loop aerial I1, be serially connected in order, the other end ground connection of I2, capacitor C 2, the C4 of another termination parallel connection of I1, another termination capacitor C 5 and the capacitor C 3 of C2, C4 in parallel, the base stage of another termination triode Q1 of C5, the other end ground connection of C3, capacitor C 5 is connected the negative pole of diode with the contact of Q1 base stage, the plus earth of D1 is used for forming this machine antenna system; C4 forms resonant tank by tunable capacitor, form the input of antenna match by fixed capacity C3 and C5 to amplifier Q1, adjusting C4 can be tuned to antenna loop the operating frequency of receiver, the RF signal is coupled to the input of RF amplifier Q1 through C5, D1 is the protection diode, prevents undersuing damage Q1; The e utmost point ground connection of triode Q1, the C utmost point connects the e utmost point of triode Q2, the C utmost point of Q2 connects capacitor C 11, another termination inductance I4 of C11, the base stage of another termination triode Q4 of I4, the amplifying signal that the C utmost point from Q2 that makes is exported forms tuning circuit by coupling capacitance C11 to I4, and the base stage that is impedance-matched to the first mixer tube Q4 is provided, and this resonant tank is tuned in same frequency simultaneously; Local oscillation circuit is by triode Q3, compositions such as crystal Y1 and tuning coil electric capacity, crystal Y1 and resistance R 5 backs in parallel and capacitor C 14 in parallel, C15 connects, Y1 in parallel, the other end ground connection of R5, C14 in parallel, another termination inductance I5 of C15, the base stage of another termination triode Q3 of I5, the C utmost point of Q3 meets inductance I7, connect the base stage of triode Q4 behind the one termination capacitor C21 of controllable impedance I7 output, the other end series resistor R8 of I7 output, connect the base stage of triode Q2 behind the R3, the e utmost point ground connection of triode Q4, the C utmost point is connected on the input of ceramic filter FL1, the output termination inductance I9 of FL1, another termination capacitor C 29 of I9, the 3rd pin of another termination FM reception chip IC 1 of C29, I7 and C20 are tuned in local oscillation signal; RF signal after the amplification is added to the base stage of mixer tube Q4, be added to the base stage of mixer tube Q4 by the oscillator signal of crystal Y1 and Q3 generation, crystal Y1 works on the 67.4MHZ frequency, the selection of its operating frequency is by the RF carrier frequency decision that receives, Q4 tuning two radiofrequency signals of I4, first local oscillation signal and carrier signal, they are sent to the base stage of mixer tube Q4, the output of high-frequency conversion circuit is taken out by the C utmost point of Q4, existing four radiofrequency signals, the RF carrier signal, the subharmonic of second local oscillator, two signal sums, two signals poor, the frequency of two signal beats is 21.7MH2, the intermediate-freuqncy signal that the C of mixer tube Q4 extremely goes up is exported through I8, and I8 also is used for the impedance matching of filter FL1; The first local oscillator crystal Y1 is individual 57～76MHZ high stability element that works in, export through C21 again frequently through amplifying the secondary letter, signal is sent to the first mixer tube Q4, filter FL1 be a resonance in the high band pass filter of the Q of intermediate frequency value, elect 21.7MHZ or 21.4MHZ as according to the carrier frequency intermediate frequency.

3. digital signalling voice paging machine according to claim 1 is characterized in that: intermediate frequency conversion circuit mainly comprises resistance R 12～R21. capacitor C 30.C32～C36, C38～C45, C50, E2, E3, inductance I10, I11, crystal Y2, filter FL2, FL3, integrated package FM reception chip IC 1; The 1st pin of FM reception chip IC 1 connects capacitor C 30, the other end ground connection of C30; The 2nd pin of FM reception chip IC 1 and the 23rd pin cross-over connection filter FL2; The 4th pin of IC1 connects capacitor C 32, the other end ground connection of C32; Connect capacitor C 33, other end ground connection after crystal Y2 and resistance R 12 are in parallel, another termination inductance I10 of C33, the 5th pin of another termination IC1 of I10, I10 is connected capacitor C 36 with the contact of C33, the 6th pin of another termination IC1 of C36; The 6th pin of IC1, the 7th pin connect ground connection behind capacitor C 34, the C35 respectively; The 8th pin ground connection of IC1; The 9th pin of IC1 connects the positive pole of electric capacity E2, the minus earth of E2; The 10th pin of IC1 serial connection capacitor C 42 connects IC1 the 26th pin behind resistance R 19, the R17, be connected the 21st pin of IC1 behind the contact series resistor R20 of C42 and IC1 the 10th pin, R16, the R15; R20 is connected capacitor C 43 with the contact of R16, the other end ground connection of C43, and R16 is connected capacitor C 39 with the R15 contact, the 22nd pin of another termination IC1 of C39, R19 is connected capacitor C 41 with the contact of R17, the 27th pin of another termination IC1 of C41; The 11st pin of IC1 is connected with capacitor C 50, C50 other end ground connection, and IC1 the 11st pin is connected capacitor C 40 with the contact of C50, the 12nd pin of another termination IC1 of C40; The 12nd pin of IC1 connects inductance I11, the resistance R 18 that is connected in parallel, another termination capacitor C 50 back ground connection of I11 in parallel, R18; The 13rd pin ground connection of IC1; The 14th pin of IC1 connects the negative pole of electric capacity E3, the positive pole of E3 connects the 27th pin of IC1; Cross-over connection filter FL3 between the 25th pin of IC1 and the 28th pin; The 26th pin of IC1 connects capacitor C 38, the other end ground connection of C38; Be used for finishing functions such as intermediate frequency amplification, amplitude limit, frequency discrimination, audio frequency amplification, filtering, the intermediate-freuqncy signal of generation 455KHZ after first intermediate-freuqncy signal of FL1 and C29 coupling and the second local oscillator beat that receives from IC1 the 3rd pin, put device in the secondary by ceramic filter FL2, FL3 and IC1 inside, further suppress monkey chatter.

4. digital signalling voice paging machine according to claim 1, it is characterized in that: decoding circuit comprises resistance R 22, R23, capacitor C 46, C47, E4, switch S 1, integrated package decoding chip IC2; The 17th pin ground connection of decoding chip IC2; Cross-over connection is connected between the 18th pin of IC2 and the 20th pin resistance R 23, R22; R23 is connected capacitor C 46 with the contact of R22, the 19th pin of another termination IC2 of C46; The the 1st to the 10th pin of IC2 connects switch S 1, by being connected between each pin, finishes the coding of each beep-pager self; The serial data that this machine receives, after amplifying, shaping gives the 12nd pin of IC2, when conforming to decode condition, IC2 the 15th pin output high level, make IC3 upset and locking Q5 conducting, keep always that IC3 resets after 10 seconds, receiver continues to operate in normal power saving operation state, and expectation is next time with the appearance of code data.

5. digital signalling voice paging machine according to claim 1 is characterized in that: logic control circuit is made up of timing controlled, power save circuit, voltage conversion circuit, under-voltage indicating circuit, power supply; Mainly comprise resistance R 24～R35, capacitor C 49, E5-E7, E9, diode D2～D4, triode Q5～Q8, inductance I12, integrated package d type flip flop IC3, digital integrated chip IC 4, voltage transformation chip IC 5, voltage monitor IC7, music triode IC8, buzzer B2, battery B1; The 1st pin of d type flip flop chip IC 3 connects the 10th pin, after its contact meets the diode D5 (negative pole of D5 is up) and resistance R 25 that is connected in parallel, and the other end ground connection of in parallel D5, R25 and connect the 4th pin of IC3, the 2nd pin of IC3 connects the 8th pin; The 3rd pin of IC3 connects the 7th pin and the 11st pin; The 5th pin of IC3 connects the 9th pin; The 14th pin of IC3 connects the 6th pin of IC5, obtains power supply VC (5V) and supplies with; The 1st pin, the 5th pin, the 13rd pin of the integrated chip IC 4 of numeral link together; Resistance R 30 and diode D3 be anodal connect and resistance R 29 with after diode D4 negative pole is connected, both parallel connections, the 2nd pin of Bing Lian last termination IC4 and the 4th pin then, the 6th pin of following termination IC4; The 7th pin ground connection of IC4; The 1st pin of voltage transformation chip IC 5 is connected the back and is connected with the positive pole of battery B1 with the 2nd pin; The 3rd pin of IC5 is connected back ground connection with the 4th pin; The 5th pin of IC5 meets inductance I12, another termination battery B1 positive pole of I12; The 7th pin connecting resistance R35 of IC5, the positive pole of another termination battery B1 of B35; When paging decoder conformed to condition, IC2 the 15th pin output high level made the IC3 upset, and IC3 the 12nd pin becomes high level, triode Q5 conducting, emitter output 2.4V voltage is for receiving unit, and IC3 resets after 10 seconds, IC3 the 12nd pin becomes low level, and Q5 works in electricity-saving state again; Under-voltage prompting is finished by IC7, and when voltage was lower than 2.3V, the 3rd pin of IC7 becomes low level made the Q7 conducting, IC8 energising and the BP sound that B2 sent do not stop; Fresh information input prompt sound is made up of one of them Schmidt of IC4, and to electric capacity E6 charging, time constant is by the R31 decision of E6, selected about 3 seconds of this machine through resistance R 31 for the high level of IC3 the 12nd pin when information is imported.

6. digital signalling voice paging machine according to claim 1 is characterized in that: the voice memory circuit comprises resistance R 36～R40, capacitor C 48, E8, light-emitting diode L1, loudspeaker S5, switch S 3, S4 integrated package voice storage chip IC6; The 1st, 2,3,4,6,10 pin of IC6 are crossed mutually and are connect back ground connection, and they connect the negative pole of electrochemical capacitor E8 simultaneously again, and the positive pole of E8 connects the 6th pin of voltage transformation chip IC 5; The 5th pin of IC6 is with after the 9th pin is connected, connecting resistance R39, the 6th pin of another termination IC5 of R39; Between the 14th pin and the 15th pin of IC6, cross-over connection loudspeaker S5; The 16th pin of IC6 connects the 6th pin of IC5; The 19th pin of one termination IC6 of parallel resistor R38, capacitor C 48, other end ground connection; Cross-over connection resistance R 37 between the 23rd pin of IC6 and the 28th pin, cross-over connection resistance R 36 between the 24th pin and the 28th pin; Receive the number of oneself when this machine after, the high level that IC2 sent makes the IC3 upset, the 12nd pin of IC3 becomes high level, the 13rd pin becomes low level, because of the 27th pin of the 13rd pin and IC6 link together (being recording playback conversion), after recording circuit was started working 10 seconds, IC3 the 13rd pin preset recovered original tone playing state, this machine divides two sections, S4 beat 10 seconds one period of last one grade of time-divisions, and S4 beats another section of next grade time-division 10 seconds, the 25th pin sending and receiving light pipe L1 of IC6, when having only the received signal recording state, luminous tube L1 is luminous, during playback whenever by a switch S 3, just can playback one time 10 seconds.

7. according to claim 1 and 3 described digital signalling voice paging machines, it is characterized in that: FM reception chip IC 1 adopts MC3367.

8. according to claim 1 and 4 described digital signalling voice paging machines, it is characterized in that: decoding chip IC2 adopts MC145030.

9. according to claim 1 and 5 described digital signalling voice paging machines, it is characterized in that: digital integrated chip IC 4 is connected into Schmidt's oscillating circuit, and duty ratio is 8: 1; D type flip flop chip IC 3, digital integrated chip IC 4, voltage transformation chip IC 5, voltage monitoring chip IC 7 adopt CD4013 respectively, CD4093, MAX777, AN051.

10. according to claim 1 and 6 described digital signalling voice paging machines, it is characterized in that: voice storage chip IC6 adopts 9F26.

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