CN2192988Y - Receiver with electric-saving and double-sound multi-frequence coading pronunciation calling system - Google Patents

Abstract

The utility model discloses a receiver, belonging to the technical field of mobile communication technology. The receiver comprises a high-frequency component, a decoder, a solid-state storage component, a power amplifier, a central processing unit, and relevant peripheral circuits, wherein, the high-frequency component receives the information of a paging transmitting station and converts the information of the paging transmitting station into audio signals, the decoder extracts information of calling codes from the audio signals, the solid-state storage component carries out recording and storage on speech signals in the audio signals, the power amplifier amplifies the speech signals, and the central processing unit controls and manages the functions of each part of the receiver. The utility model has the advantages of simple structure, convenient carrying, electric energy saving, accurate and reliable information reception, feasible recording and storage for speech information, etc.

Description

Receiver with electric-saving and double-sound multi-frequence coading pronunciation calling system

The utility model belongs to the mobile communication technology field, particularly the structural design of the receiver of speech beeper system.

Radio paging system has been widely used in various occasions, and alphanumeric pager uses the most extensive at present.This beep-pager channel utilization height, but meet difficulty public telephone still underdeveloped area, especially industrial and mining enterprises, hospital, public security, People's Armed Police, the inner use of army.Because it can only transmit telephone number that Arabic numerals and several simple letter form or phrase for language, generally to obtain details, can't be used for the commander of field operation group by the phone caller that answers a pager's call again by the person of exhaling.

For overcoming the weak point of digital paging system, the applicant invents out a kind of new voice paging method and speech beeper system, and this paging system adopts double-tone multi-frequency coding to realize voice paging, and transmission information is accurate, reliable, and saves electric energy.System constitutes simple, and cost is low, is particularly suitable for the underdeveloped county town of public telephone, rural area and industrial and mining enterprises, hospital, the inner use of public security People's Armed Police.This voice paging method and system thereof apply for patent of invention (number of patent application is to be 94.3.2 94101478.9 applyings date) by the applicant.

The purpose of this utility model is to design a kind of receiver that is applicable to the double-tone multi-frequency coding voice paging system of power saving, make it have the saving electric energy, voice messaging can be recorded preservation, and volume is little, low cost and other advantages makes speech beeper system practicability, universalness more.

The utility model is designed a kind of receiver that is used for the double-tone multi-frequency coding voice paging system of power saving; comprise the high-frequency unit that the information of page transmission platform is received and is converted to audio signal; by extracting the decoder of calling out sign indicating number information in the audio signal; to the voice signal in the audio signal record the storage the solid-state storage parts; the power amplifier that voice signal is amplified; the central processing unit that said receiver each several part function is carried out control and management; and can carry out various functions demonstrations, protect the relevant peripheral circuit of above-mentioned parts trouble free service.

The utlity model has simple in structurely, easy to carry, save electric energy, reception information is accurate, and reliable, advantages such as voice messaging can be recorded, preservation are applicable in the double-tone multi-frequency coding voice paging system of power saving, have a wide range of applications.

Brief Description Of Drawings:

Fig. 1 is that a kind of embodiment circuit of the present utility model is formed schematic diagram;

Fig. 2 forms schematic diagram for the present embodiment contour structures.

The utility model is designed a kind of receiver embodiment that is used for the double-tone multi-frequency coding voice paging system of power saving, is described in detail as follows in conjunction with the accompanying drawings:

Fig. 1 forms schematic diagram for the present embodiment circuit.Form by central processing unit, high-frequency unit, decoder, solid-state storage parts, power amplifier and peripheral circuit each several part.Each several part is formed and function is described below respectively:

The control centre of complete machine is single-chip microcomputer 8051(U5, is called for short CPU).It at first wails memory feature 93C06(U6 by the user start back) read in this machine and wail, to send width be 1/11 second reception control signal (low level is effective) to per second then, makes high-frequency unit enter the search accepting state.Simultaneously this signal is added to dual-tone multifrequency decoder 8870(U1) the IC2 end, make it also enter operating state.

High-frequency unit is almost completely the same with common double superheterodyne system alphanumeric pager HFS.Just the audio signal that obtains of frequency discrimination is without pulse shaper, and directly amplifies output by the 6 decibels/octave back of postemphasising.Provide a carrier frequency detection signal simultaneously and by frequency discriminator.This all is circuits of approved product, so do not describe in detail.

The audio signal of high-frequency unit output is through C7, and R17 is added to decoder 8870(U1) audio input end IN-.Simultaneously and through C12, R16 is added to recording playback control chip UM93510(U8) recording input MICI end.The ratio of R1 and R17 has been determined the multiplication factor of U1; And the ratio of R4 and R16 has been determined the recording multiplication factor of U8.

Decoder U1 detects the dual-tone multifrequency sign indicating number in the audio signal.When a sign indicating number occurring, CID end level is uprised by low, and triode P3 conducting is at U5(CPU) the INTO end produce one and interrupt application.Simultaneously, the tetrad data of this yard bring out existing at D01～D04 of U1.U5 can read in it through P2.4～P2.7 end, and compares one by one with this machine catchword sign indicating number of preserving in order.As inconsistent with this machine catchword, CPU closes the reception control signal immediately, and dormancy is searched for after 10 seconds more again.If the calling sign indicating number that receives is consistent with catchword own,, will start a recording receiving course in limited time for calling out.In the recording receiving course, the P1.5 of U5 end level will be opened power amplifier power supply pipe Q6 by high step-down, make buzzer drive circuit Q2, Q7 and power amplifier 7050(U4) obtain power supply.U5 behind the position of a selected recorded message, by P1.0 and P1.1 to voice memory feature 628128(U7,1 megabit static storage sheet) send two bit address.And the REC of recording playback control strip U8 and CE end are uprised by low through P1.3 and P1.4, enter recording state.The audio signal that is input to the MICI end of U8 will record among the memory feature U7 with digital form.In the accepting state of prescribing a time limit, REC and CE step-down after 10 seconds finish the recording receiving course.

For reception in unlimited time, U5 does not start the recording playback control strip after opening the power amplifier power supply, but opens live switch triode Q8, makes the directly ingoing power amplifier U4 playback of audio signal (the FB end of U1) after decoder U1 amplifies.

In the voice messaging receiving course of exhaling after leading to, U5 makes red light emitting diodes D3 glittering through the P0.3 end.Whether the determining positions of the console switch SW that also measures according to P2.0 and P2.1 opens triode Q2 simultaneously, so that triode Q7 can (the clock pulse frequency division by U5 omits among the figure to the square wave of 2048HZ.) amplify, promote buzzer LS2 sounding; Or, make the machine vibration that shakes through P2.2 unlatching triode Q5; Or open live switch Q8 through P1.7, and make audio frequency (U1 holds at FB) in recording, directly be added to power amplifier U4 through decoder U1 amplifies, promote loud speaker LS1 and speak.

During user's pressing operation switch SW, its 6 ends and 7 ends are sent an INT1 to U5 and interrupt application by short circuit.Be in playback position if U5 detects switch through P2.0 and P2.1, U5 will start a playback process.It is opened power amplifier power supply pipe Q6 earlier, finds out two bit address when previous information then, gives memory feature U7 through P1.0 and P1.1.And the PLAY2 of recording playback control strip U8 and CE end level are uprised by low through P1.2 and P1.4, enter tone playing state.Originally be recorded in corresponding data among the U7 and be resumed and be audio signal,, amplified back promotion loud speaker LS1 through power amplifier U4 by the FILOUT end output of U8.In the playback process, CPU(U5) and according to the characteristics determined of information whether through P0.3 and P2.3 end points shiny red luminous tube D3 and green luminotron D2.

U5 in this circuit need select for use oscillation frequency clock can hang down the power conservation type product that reaches 32KHZ.The machine M1 that shakes need voltage is 2.2 volts of specifications.All components and parts all use surface mount (SMD) technology to install.

Fig. 2 is the present embodiment shape assumption diagram.Wherein Fig. 2 (a) is the installation diagram of each part, and Fig. 2 (b) is an outline drawing.From Fig. 2 (a) as seen, present embodiment is a rectangle box body 14, is separated into two parts in the box, and top is equipped with each circuit elements device of receiver, and wherein, high-frequency unit is welded on the high frequency plate 9.Decoder, central processing unit is Gu all be welded on another piece decoding deck 5 at components and parts such as memory unit and amplifiers.The components and parts of peripheral circuit: red, green indicating lamp 1,2, action button 3, console switch 4, buzzer 6, loud speaker 7, frame antenna 8, power supply/volume toggle 10, power supply/volume switch 11, the machine 12 etc. that shakes, its installation site is as shown in FIG..The bottom of box is divided into battery case, and 2 joints No. five or No. seven batteries 13 can be installed.

Fig. 2 (b) is present embodiment profile front and side schematic view.Its top, box front is a loud speaker window 7, and the below can be used for pasting making product nameplate.The top is redness, green indicating lamp 1,2 and action button 3, and the side is power supply/volume toggle 10, and the box back is equipped with and hangs folder 15.

Leading indicator in the present embodiment:

Sensitivity: frontal 5 microvolt/rice, reliably exhale logical.

Recorded message capacity: four information of prescribing a time limit.

Volume: 95*60*20 cubic millimeter (No. 5 batteries) or 86*56*16 cubic millimeter (No. 7 batteries).

Message pick-up indication: can be set to buzzing, shake machine or direct-seeding.

Present embodiment has following effect:

1,,, during high 36 meters of antenna, can reliably exhale logical in the street apart from 5 kilometers places of transmitter 20 watts of transmitting powers owing to use double-tone multi-frequency coding.Also there was the record of call completion ratio more than 50 percent in the countryside of locating street and 15 kilometers places apart from 9 kilometers in transmitter.

2, because during no effective call, receiver is in " wait-search-dormancy " state samsara, makes 1/10～1/20(measured current when not having called receiver power consumption to be reduced to be about uninterrupted reception less than 1 milliampere).Use the No.5 cell of two joint capacity, 1,000 MAHs, be not related to function and wait for continuously more than 30 days.

3, this receiver uses the speed of per second 22 kilobits to record with digital form.Meaning of one's words intelligibility and speaker's identification degree of playback are very good.About 30 milliamperes of power consumption (not opening when shaking machine) when reception and playback.Therefore use the No.5 cell of two joint capacity, 1,000 MAHs, can finish 5,000 speech information recording playback circulations.

4, above power consumption can be accepted for the user.And further select the device and the piezoelectric ceramic loudspeaker of more power saving for use, and be expected to use instead a battery, power consumption is dropped to present 1/2nd.

Claims (1)

1; a kind of receiver that is used for the double-tone multi-frequency coding voice paging system of power saving; comprise the high-frequency unit that the information of page transmission platform is received and is converted to audio signal; it is characterized in that also comprising by extracting the decoder of calling out sign indicating number information in the audio signal; to the voice signal in the audio signal record the storage the solid-state storage parts; the power amplifier that voice signal is amplified; the central processing unit that said receiver each several part function is carried out control and management; and can carry out various functions demonstrations, protect the relevant peripheral circuit of above-mentioned parts trouble free service.

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