CN2243747Y - Broadcast paging system - Google Patents

Abstract

The utility model discloses a broadcast paging system. The utility model is composed of a receiving circuit 1, a secondary frequency discriminating circuit 2, a control circuit 3, a speech processing storage circuit 4, and a power amplification circuit 5. The receiving circuit can receive information transmitted by a minor channel in the FM broadcasting transmitting band of a broadcast station, and first frequency discrimination is carried out. Secondary frequency discrimination is carried out through the secondary frequency discriminating circuit to obtain audio signals which are broadcast by the power amplification circuit. Through the control circuit, the paging system only listens in to signals which page the paging system, and the speech processing storage circuit carries out storage and playback for the information. The received signals of the minor channel can be transmitted by the existing frequency-modulated broadcast transmitters. The utility model has the advantages that the utility model can enable paged persons to hear paging sound directly, sentence capacity can reach 20 seconds, paging accuracy is high, and cost is low.

Description

The Radio Paging machine

The utility model belongs to telecommunication equipment, is a kind of beep-pager.

At present, the use of beep-pager is very general, and beep-pager makes people's communication more convenient.But, also there is weak point in general beep-pager on its function, no matter be teaching machine or Chinese character machine, all can not the intention that the paging people is complicated convey to paged people, and need pagedly go into to give again the paging people to call back, and the transmitting power of paging centers is little, and beep-pager does not then receive paging signal when far away apart from the urban district.

The purpose of this utility model is that a kind of sound that can receive paging person, the beep-pager that range of receiving is big will be provided.

Solution of the present utility model is to form beep-pager by receiver, decoder and language processor, makes the information of transmitting on its pair that can receive broadcasting station FM broadcasting emission band news road.

The utility model is owing to adopt the signal that receives the secondary news of existing broadcasting road, paged person can directly hear paging person's sound, the statement capacity can reach 20 and move clock, and the signal that receives is by existing FM broadcasting transmitter emission, and paging accuracy height, scope are big, with low cost.

Below in conjunction with accompanying drawing the utility model is specified:

Fig. 1 is the utility model circuit block diagram;

Fig. 2 is reception, power amplifier figure;

Fig. 3 is secondary frequency-discriminating circuit figure;

Fig. 4 is control circuit figure;

Fig. 5 is speech processes, memory circuit figure.

The utility model is made of receiving circuit 1, secondary frequency-discriminating circuit 2, control circuit 3, Language Processing memory circuit 4, power amplification circuit 5, loud speaker 6, receiving circuit 1 connects secondary frequency-discriminating circuit 2 and power amplification circuit 5 respectively, secondary frequency-discriminating circuit 2 connects control circuit 3, speech processes memory circuit 4 and power amplification circuit 5 again respectively, control circuit 3, Language Processing memory circuit 4 all connect power amplification 5, and power amplification circuit 5 connects loud speaker 6.Receiving circuit 1 is by IC ₁And peripheral circuit constitutes IC ₁Adopt the CXA1019P integrated package, by C ₁, C ₂, C ₅And L ₁Constitute broadband filter, receive high-frequency signal through antenna, by L ₂, C ₉, C ₆Constitute high-frequency tuning loop, L with C ₃, C ₇, C ₁₀, C constitutes the local oscillation resonant tank.Broadcast singal behind receiving circuit 1 frequency conversion and frequency discrimination, the audio signal of its output, a route IC ₁The 23rd pin is drawn and is passed through K ₃Connect power amplification circuit 5, export the main carrier frequency broadcast singal of this machine, make the user can the listening in frequency modulation broadcast program, described K ₃In Fig. 3, receiving circuit 1, power amplification circuit 5 shared CXA1019P integrated packages; R is passed through on another road ₁₀, C ₂₃The frequency modulated subcarrier signal is sent into secondary frequency-discriminating circuit 2.Secondary frequency-discriminating circuit 2 is by IC ₂And the amplifier circuit for sound frequency signal of the subcarrier amplifying circuit of front end, rear end constitutes IC ₂Be the TA7343AP integrated package, the subcarrier amplifying circuit is by BG ₁, R ₇-R ₉, C ₂₄, L ₄Constitute, amplifier circuit for sound frequency signal is by BG ₂, R _21-24, C ₃₁Constitute, subcarrier signal amplifies through the subcarrier amplifying circuit, is input to IC ₂The 1st pin, at IC ₂The 2nd pin can obtain one and change proportional audio signal voltage with frequency input signal, behind the low pass filter filters out subcarrier, the one tunnel amplifies through amplifier circuit for sound frequency signal, passes through K ₃Defeated people's power amplification circuit 5, while input control circuit 3, another road input speech processes memory circuit 4.Control circuit 3 is by IC ₃-IC ₆, IC ₉Form IC ₃Being MT8870, is double voice multi-frequency receiver, IC ₄Being CD4028, is decoder, IC ₅Be CD4043, IC ₆Being CD4081, is selector, IC ₉Being CD4053, is analog switch.Every beep-pager has number separately, when paging centers's paging, at first sends the paging number, and beep-pager receives signal, through once, behind the secondary frequency discrimination, IC ₃This paging number is received and convert the weighted code signal to, by IC ₄Decoder translates the selector IC that makes a gift to someone ₅, IC ₆, during selector output high level, pass through C ₄₁, R ₂₉The pulse voltage that produces, this pulse voltage is input to speech processes memory circuit 4, sends into IC simultaneously ₉Control end, IC ₉Connect power amplification circuit 5, power amplification circuit 5 connections this moment, but the information of paged person uppick paging from loud speaker 6.Speech processes memory circuit 4 is by IC ₇, IC ₈And peripheral circuit is formed IC ₇Be YYH402 integrated package, IC ₈For the CDM62256E10 integrated package, by C ₄₃, C ₄₄, L ₅The oscillating circuit of forming processor, C ₄₅, R ₃₂Constitute input circuit, R ₃₃, R ₃₈, C ₄₆Be playback circuit, by the IC that is dynamically connected ₇The K switch of the 36th pin ₄, make K simultaneously ₃Be in state to be exhaled, IC ₈Store information is discharged, pass through K ₃, power amplification circuit 5, can spread out of from loud speaker 6, to satisfy paged person uppick paging person's sound at the appropriate time.

Claims (2)

1, a kind of Radio Paging machine, it is characterized in that: it is made of receiving circuit 1, secondary frequency-discriminating circuit 2, control circuit 3, speech processes memory circuit 4, power amplification circuit 5, loud speaker 6, receiving circuit 1 connects secondary frequency-discriminating circuit 2 and power amplification circuit 5 respectively, secondary frequency-discriminating circuit 2 connects control circuit 3, speech processes memory circuit 4 and power amplification circuit 5 again respectively, and control circuit 3, speech processes memory circuit 4 all connect power amplification circuit 5.

2, Radio Paging machine according to claim 1, it is characterized in that: receiving circuit 1 is by IC ₁And peripheral circuit constitutes IC ₁Adopt the CXA1019P integrated package, C ₁, C ₂, C ₅And L ₁Constitute broadband filter, L ₂, C ₉, C ₆Constitute high-frequency tuning loop, L with C ₃, C ₇, C ₁₀, C constitutes the local oscillation resonant tank; Secondary frequency-discriminating circuit 2 is by IC ₂And the amplifier circuit for sound frequency signal of the subcarrier amplifying circuit of front end, rear end constitutes IC ₂It is the TA7343AP integrated package; Control circuit 3 is by IC ₃-IC ₆, IC ₉Form IC ₃Be MT8870, IC ₄Be CD4082, IC ₅Be CD4043, IC ₆Be CD4081, IC ₉Be CD4053; Speech processes memory circuit 4 is by IC ₇, IC ₈And peripheral circuit is formed IC ₇Be YY402 integrated package, IC ₈Be CDM62256E10 integrated package, C ₄₃, C ₄₄, L ₅Form oscillating circuit, C ₄₅, R ₃₂Constitute defeated people's circuit, R ₃₃, R ₃₈, C ₄₆Be playback circuit; Power amplification circuit 5 and receiving circuit 1 shared CXA1019P integrated package.

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