CN1103739A - Electricity-saving double-tone multi-frequency coding voice paging method and voice paging system - Google Patents
Electricity-saving double-tone multi-frequency coding voice paging method and voice paging system Download PDFInfo
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- CN1103739A CN1103739A CN 94101478 CN94101478A CN1103739A CN 1103739 A CN1103739 A CN 1103739A CN 94101478 CN94101478 CN 94101478 CN 94101478 A CN94101478 A CN 94101478A CN 1103739 A CN1103739 A CN 1103739A
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Abstract
The present invention relates to translational telecommunication techn and the said paging method features its double-tone multi-freq coding regulation, i.e., user calling code and voice data are transmitted in certain time sequence and the receiver is set in one of three states: search, waiting and sleeping. The voice paging system includes the transmitter comprising manual operation board, automatic servicer, encoder, management microcomputer and emiter and the receiver comprising HF parts, record memory, power amplifier and CPU. The said system has the merits of high reliability, the capacity of storing voice data, etc.
Description
The invention belongs to radio engineering, the communication technology, moving communicating field.Be particularly related to the design and fabrication technology of radio paging system (being commonly called as Pocket Bell, BB machine, beeper).
Radio paging system has been widely used in various occasions, and the radio paging system that uses has following several at present:
The alphanumeric pager channel utilization height of Pu Jiing the most, but all 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 or phrase code that Arabic numerals and several simple letter are formed, 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.
The beep-pager that Chinese character shows has begun to apply.But the input of information must rely on technology maturation, the operator of certain text summarization ability to express is arranged.They often are difficult to correct expression to run into professional term.And be difficult to realize the automatic paging mode of the information of directly sending by the caller to the callee.
The beep-pager that the voice paging machine of external early stage development, very fast quilt can transmit numeral or alphabetic writing replaces.Because what used at that time is the single-tone coding, with tuning fork or piezoelectric ceramics resonator decoding, complex process, cost height, poor reliability, and do not add the recording parts, very inconvenient in the practicality.Though as previous stage Beijing set up the voice paging platform, U.S.'s product of use introducing, decoding parts wherein will be used the ceramic filter of 65 kinds of specifications, do not have the recording parts, the production cost height, the user has little time to listen to, sound disappears.Soon this platform is promptly closed.
All use dual-tone multifrequency (DTMT) coded system in the telephone to make call (being paging) function in the present wireless tranceiver.This coded system makes the decoder cost low, good reliability.But they are that pocket pager is unacceptable in the power consumption of stand-by state, so can not directly copy mechanically on the voice paging machine.
The present invention seeks to overcome the weak point of prior art, on the Dual Tone Multifrequency coding call mode basis in intercom, a kind of new voice paging method and speech beeper system are proposed, has the saving electric energy, transmission information accurately and reliably, voice messaging can be recorded preservation, system constitutes simple, low cost and other advantages, be particularly suitable for the underdeveloped county town of public telephone, rural area, and industrial and mining enterprises, hospital, public security, People's Armed Police are inner uses.
The present invention proposes a kind of voice paging method that is used for speech beeper system, it is characterized in that may further comprise the steps:
The voice paging content comprises customer call sign indicating number information and voice messaging;
Said customer call sign indicating number information adopts the Dual Tone Multifrequency coding rule, and digital " 0 "～" 9 " are used as unique user and call out numbering; Letter " A "～" D " reaches " # ", " * " is special functional code, comprises grouping busy sign indicating number spacing sign indicating number, double sign code, guiding call sign indicating number in unlimited time and end of calling code in unlimited time;
The voice paging transmission timing is the said customer call sign indicating number information that sends earlier, sends said voice messaging again;
Said customer call sign indicating number sending order is: by end position to the first place, every transmission one bit code, one sends the sign indicating number time at interval, give a bit code again, a bit code of Fa Songing continues one long period with " waking up " receiver at first, replaces a few positions that the user wails with the said sign indicating number of grouping busy, then formation is grouied busy or divided into groups and grouies busy, when after a bit code identical with the sign indicating number that has just sent, then send said double sign elsewhere and send code;
Said voice messaging is divided into voice and voice in unlimited time in limited time, said voice time minimum length in unlimited time equals voice length in limited time, if send voice in unlimited time, then add before wailing and send out said guiding call sign indicating number in unlimited time sending the user, when sending voice end in unlimited time, send end of calling code in unlimited time;
Receiver user is provided with search, wait and three kinds of states of dormancy, the receiver start is searched for, is waited for by the certain hour loop cycle, said search, latent period time span are less than first duration length of calling out sign indicating number of said transmission, said dormancy time equals a voice length in limited time, when searching a string double-tone multi-frequency coding of transmission, to compare by turn with the catchword of self, if all meet, receiving speech information then, if any bit code does not meet, shutdown immediately enters resting state, moves in circles with this.
The present invention proposes a kind of speech beeper system of power saving according to said method, formed by page transmission platform and a plurality of receiver, it is characterized in that said page transmission platform comprises the more than one manual operation platform that can be made of the microphone of the keyboard of manually squeezing into the calling sign indicating number and reception voice, change the calling sign indicating number of squeezing into the encoder of touch-tone signal into chronologically, be modulated at touch-tone signal and voice signal on the high-frequency signal and be transmitted into the radio transmitter in space; Said receiver comprises the high-frequency unit that the information of said 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; said receiver each several part function is carried out the central processing unit of control and management and can carry out various functions showing, protect the relevant peripheral circuit of above-mentioned parts trouble free service.The said page transmission platform of the present invention also comprises the automatic paging server that can transmit the information that the local telephone line transmits more than one automatically, be used for transmission information is carried out the microcomputer of control and management, said each artificial operating desk all links to each other with the input of voice channel with an adapter by digital channel with the automatic paging server, the output of this adapter links to each other with said transmitter by public voice channel, links to each other with microcomputer by the common number passage.Said encoder comprises that an energy reaches the coding circuit that " * ", " # " are converted to the dual-tone multifrequency sign indicating number with code " 0 "～" 9 ", " A "～" D ", the circuit that energy feeds code data for this circuit by said sequential, control this circuit chronologically for one and produce coding or out-of-work circuit, reach the circuit that manages and monitor by said microcomputer.Said automatic paging server comprises the testing circuit of User Status, the identification of subscriber dialing, record or repeat circuit, and signal prompt sound generator switches to user speech the analog switch of transmitter or public speech channel.And through the circuit of digital channel and management computer communication.
This voice paging method and speech beeper system that the present invention proposes have the saving electric energy, and transmission information is accurate, reliable, and voice messaging can be recorded and preserve, and system constitutes simple, and low cost and other advantages is with a wide range of applications:
The present invention is for the big factories and miness of personnel activity's scope, hospital, institution of higher learning, and it is very convenient to make internal information transmit.Can become carry-on " electronic speech mailbox ".If telephone can not find the callee, can change and push the voice paging platform, automatically speech is delivered in any place in callee's carry-on " the electronic speech mailbox " of (referring to launch in the radius).The present invention is for the construction site, and the commander of the on-the-spot large group operation of public security People's Armed Police and army uses the voice paging machine that sound-recording function is arranged, may be also more convenient and cheap than intercom.
The capacity of general telephone suboffice is all below ten thousand.If there is 10%～20% user to use the automatic speech paging centers that is based upon suboffice according to the present invention, so when the user is not by phone, the calling party can transfer the automatic paging platform, and information is delivered to the user in any place in transmitting boundary, becomes the continuity of telephone.
Microelectric technique and technology can provide whole equipment of realizing low cost of the present invention, low power consumption, small size at present.
Brief Description Of Drawings:
Fig. 1 is that of embodiments of the invention calls out the transmission timing schematic diagram
Fig. 2 is the structured flowchart of present embodiment page transmission platform
Fig. 3 is the formation block diagram and the sequential of the encoder in the present embodiment page transmission platform
Fig. 4 is the structured flowchart of the automatic paging server in the present embodiment
Fig. 5 is the structured flowchart of the receiver of present embodiment
Fig. 6 is that the main process block diagram is handled in the reception of present embodiment receiver program
The invention provides a kind of embodiment of voice paging method, be described in detail as follows:
Present embodiment is continued to use the Dual Tone Multifrequency coded system in the telephone, and the coding that uses the user to wail can transmit in the simulated voice passage.The dual-tone multifrequency sign indicating number has 16.Digital " 0 "-" 9 " are used to form Customs Assigned Number." A "-" D " and " # ", " * " make special functional code.Wherein:
" A " is defined as and grouies busy sign indicating number
" B " is defined as the spacing sign indicating number
" D " is defined as double sign and sends code
" * " is defined as guiding call sign indicating number in unlimited time
" # " is defined as end of calling code in unlimited time
Present embodiment is distinguished unique user with 4 by the numbering that " 0 "-numeral of " 9 " is formed.This numbering is called user's catchword.If with grouping busy that sign indicating number " A " replaces a few positions in user's catchword, mean that then these all will be called out for the user of Any Digit, i.e. formation is grouied busy or is divided into groups and grouies busy.The coding that the user wails (be called for short and call out sign indicating number) sending order is: by the position, end to a high position.If when sending a calling sign indicating number, a bit code of back identical with a bit code of sending just now (consecutive numbers) is then sent " D " sign indicating number elsewhere.For example:
The user wails and calls out sign indicating number transmission form
1234 “4-3-2-1”
1233 “3-D-2-1”
1222 “2-D-2-1”
AAAA(is grouied busy) " A-D-A-D "
Generally speaking, voice messaging is for transmitting in limited time.Send out a bit code " * " if before the user wails, add, mean that then this is a calling in unlimited time, the voice messaging maximum length is unrestricted, and its minimum length equals voice messaging length in limited time, with the end of a dual-tone multifrequency sign indicating number " # " as this information.
Article one, the process of transmitting of calling is: the calling sign indicating number (dual-tone multifrequency sign indicating number) that sends call object earlier.For waking the receiver that is in stand-by state up, first sign indicating number that is sent out (position, end or guidance code in unlimited time " * " that the user wails) duration is 1 and 1/8 second.Per intermittence 1/8 second send one, continue 1/8 second thereafter.All call out sign indicating number transmission finishing back and send voice.
For calling out in limited time, the voice transmitting time is 10 seconds.
For calling in unlimited time, after sending voice, send a dual-tone multifrequency sign indicating number " # " as end of message sign.
Fig. 1 has provided the transmission timing figure of two kinds of callings.Among the figure, 11 for wailing the sign indicating number time period, and 12 is spacer, and 13 is intersegmental when prescribing a time limit voice messaging, and 14 is mark in unlimited time " * " time period, and 15 is the voice time period in unlimited time, and 16 is that voice in unlimited time send end mark " # " time period.Wherein, Fig. 1 (a) is a sequential chart of calling out in limited time, and the lowest order that at first sends 1 and 1/8 second is wailed sign indicating number, sends 1/8 second low level at interval after 1/8 second again and wails sign indicating number, so wails sign indicating number until highest order, sends 10 seconds voice messaging at interval after 1/8 second.Fig. 1 (b) is the sequential chart of a calling in unlimited time, at first send 1 and 1/8 second mark in unlimited time " * ", the same again every catchword sign indicating number that continues 1/8 second of transmission in 1/8 second, after 1/8 second, send voice in unlimited time again, voice finish the back every 1/8 second end mark " # " of transmission in 1/8 second.
Therefore, be 4 at the customer call sign indicating number, at interval 1/8 second the time, transmitter sends a normal voice messaging of 10 seconds in limited time, and All Time is: 1+4*(1/8+1/8)+10=12(second).
Whenever, transmitter must be intermittently greater than 10 seconds after having launched one group of customer call sign indicating number, and voice messaging is after the delivery time in limited time promptly to be equivalent to one, and just next bar of permission transmission is called out.Because receiver may cut out receiving function 10 seconds behind the calling sign indicating number of receiving last group of non-calling self, enter resting state with power saving.
Therefore, calling out 4 of sign indicating numbers, in limited time 10 seconds the time, with time quantization be 12 seconds one section.If there is effective call request before this section period, then transmitter sent in preceding 2 seconds and calls out sign indicating number, sent voice messaging in back 10 seconds.If there is not live application before this section period, then in preceding 2 seconds, send out spacing " BDBD ", can close transmitter in back 10 seconds or be engaged in other business.
So just make to be launched that receiver also can synchronously be in the sleep for electricity saving state in the most of the time (as 10 seconds in 12 seconds intervals) of each quantized interval with the radio station even without any effective call.
Receiver is in the search wait state at ordinary times, and open once each second, and paging code and format is caught in search.Be 1/8 second or shorter (the actual use of present embodiment is 1/11 second) search time.As capture a calling sign indicating number, consistent through check with the catchword lowest order of self, or group busy sign indicating number " A ", guidance code in unlimited time " * " then will continue the calling sign indicating number of reception back, test by turn, up to changing the voice reception over to.During this time as any bit code inconsistent, then enter resting state, closed 10 seconds, starting shooting when treating that next group calls in several sign indicating number arrives, it is to be recycled to enter search etc. again.
The invention provides a kind of speech beeper system embodiment that adopts above-mentioned voice paging method, formed, be described in detail as follows respectively in conjunction with the accompanying drawings by page transmission platform and a plurality of receiver:
Fig. 2 is the structured flowchart of present embodiment page transmission platform.Wherein, the information that transmits through local telephone in order to receiving caller's of a plurality of manual operation platforms and automatic paging server.Again by digital channel 21 through adapter, common number passage 23 carries out information inquiry and emission application to management computer (abbreviation main frame).Wait in turn through queuing, host computer control signal 26 command encoders send earlier by the person's of exhaling dual-tone multifrequency and call out sign indicating number 27, forward this operating desk or automatic paging server speech channel 22 to public speech channel 24 then, send the transmitter emission.In whole process, main frame is through common number passage 23 loopback state informations 25.Adapter is according to the control signal 26 of main frame, circularly the digital channel 21 of each operating desk and automatic paging server is inserted the common number passage 23 of main frame, and the speech channel 22 of the operating desk of appointment or automatic paging server is forwarded to public speech channel 24.Before sending an information, main frame is opened transmitter with " request sends " signal 28, after transmitter is ready, with " emission is ready to " signal 29 notice main frames.
In the present embodiment, transmitter is a common apparatus.Main frame is a common apparatus configure dedicated management software.Adapter is formed by some simple numerical switches, analog switch and serial-to-parallel change-over circuit.The simple available general serial keyboard video terminal of manual operation platform adds a telephone set, just can realize.
An implementation of the critical component encoder of transmitting station as shown in Figure 3.Its top is structured flowchart.Its underpart is a working timing figure.This scheme is the implementation of software and hardware combining.Both guaranteed the accuracy of timing, hardware configuration is simplified as far as possible.
This encoder hardware is by command register, and unit interval pulse generator, 7 digit counters, state decoder, double-tone multi-frequency coding device are waited for compositions such as circuit and clear circuit.Annexation between them and each several part function are as follows:
The unit interval pulse generator is spaced apart 1/8 second time pulse TUNIT31 in generation, as the encoder time reference.The input of command register is connected to the data/address bus 32 and the write signal line 33 of main frame.Main frame can write one 8 command word with the operating impulse of write signal line to command register.(D0～D3) representative needs one of transmission to call out sign indicating number to low four of command word.Latch 4 coded data C0-C3 outputs of back generation and deliver to the double-tone multi-frequency coding device.The coding audio signal 34 of double-tone multi-frequency coding device output is sent to the radio transmitter modulate emission.The D7 position of command word is latched the back and is produced request to send signal TRXR35, delivers to radio transmitter application emission.After latch the D6 of command word and D5 position, produce encoder enabling signal START36 and catchword/speech state control signal VOIST37 respectively.Signal VOIST is through D flip-flop, after the time pulse TUNIT rising edge that is produced by the unit interval pulse generator latchs synchronously, becomes speech control signal VOICE38, delivers to main frame, is used to open public speech channel.Signal VOIST37 also with enabling signal START36, time pulse TUNIT31, from " transmitter is ready to " signal TRDY39 of transmitter, be added to the wait circuit together.During signal START36 invalid (being 0), the wait circuit is exported effective waiting signal WAIT301; At signal START (is 1 effectively, encoder work) time, the trailing edge of state control signal VOIST37 produces effective waiting signal WAIT301, and effectively " transmitter is ready to " signal TRDY39 will synchronously close WAIT signal 301 with time pulse TUNIT31.Waiting signal WAIT301 and VOIST37, the VOICE38 of output are added to the removing circuit together, in the waiting signal WAIT valid period, perhaps wail/during the speech state exchange, produce " removing " signal CLR302 of 7 digit counters.7 digit counters are to the rising edge counting of time pulse TUNIT31.Counting output SD0-SD6 delivers to main frame.Main frame can read to send and be ready to the count value SD0～SD6 of signal TRDY39 sum counter through parallel 8 interfaces, thereby obtains the work state information of encoder.State decoder is according to low 4 SD0-SD3 of counting output, and signal such as WAIT301, VOICE38, TUNIT31, produce the coding control signal DTMFC303 of double-tone multi-frequency coding device, and send interruption application INT304 to main frame at the trailing edge of unit interval pulse TUNIT31.Its logical equation is:
DTMFC＝WAIT·（SD0·SD3+VOICE）
INT＝TUNIT[（WAIT+VOICE·SD0·SD1·SD2）+VOICE·SD0·SD3]
As can be seen, during wailing (VOICE38 invalidating signal), be 0～8,10,12 only in count value, 14 o'clock generation DTMFC303 signals.Code volume during the inclined to one side sign indicating number of dual-tone multifrequency device hangs down four with command register is sent to transmitter for audio signal.And be 9,11,13 in count value, produced in 15,17 o'clock and to interrupt application, call out sign indicating number for one that requires main frame to pack into new, or finish the catchword state, change the speech transmit status over to.Speech state (VOICE38 is effective), interrupting application is that 7+8N(N is more than or equal to 0 positive integer in count value only) time just produces and interrupts application, and main frame can be read a speech time meter second value by SD3～SD6.During waiting for that circuit is exported effective waiting signal WAIT301, will continue to produce and interrupt applying for.7 digit counters are by signal CLR302 zero clearing during this.The continuous interrupt number of host analysis when count value is zero just known the length of stand-by period.Carry out overtime warning.
The encoder course of work is as follows:
When main frame did not start encoder work, emission application TRXR35, encoder enabling signal START36 all were in disarmed state, and the disarmed state of START will make the wait circuit produce waiting signal WAIT301.The calling sign indicating number write command register that first is sent out low four, and make catchword/speech state control signal VOIST37 be in speech attitude (high level).The pulse 31 that the unit interval pulse-generating circuit continues to produce will constantly form interrupts application.But, ignore because main frame interrupts not opening as yet.
When main frame had emission to need, the course of work was shown in sequential chart.Open encoder and interrupt 311, when first interrupts then, host write command word 32.The calling sign indicating number that first is sent out writes low four of register, is added to the double-tone multi-frequency coding device.Simultaneously START36 and TRXR35 write significant level, start encoder and launch to the transmitter application.VOIST37 changes the catchword state over to after writing low level.Unit interval arteries and veins TUNIT31 subsequently will make the counter synchronisation zero clearing.If transmitter was ready to (TRDY39 is effective) waiting signal WAIT301 and was closed this moment.The DTMFC303 signal that state decoder produces makes the calling sign indicating number transfer touch-tone signal to and sends to emission.Because clear signal disappears, counter will be counted the time started, and be 9,11,13 in count value ... produce in the equal time district and interrupt application, require to change a new calling sign indicating number or change into speech state (note: call out different, be 15 and changed the VOIST signal at 17 o'clock in count value respectively) in limited time with the calling code bit number of calling in unlimited time.DTMFC303 control signal coding emission when this calls out sign indicating number promptly by next count value, or when next count value changes, synchronously open speech control signal VOICE38, the speech of the public speech channel of adapter in the transmitting station is sent to the radio transmitter emission.Before the catchword state finishes last interrupted, if the calling of emission is a calling that information is arranged, it is constant that main frame will keep transmission to apply for, more than as first section 312 calling procedure in the sequential chart.If emission is not the calling that information is arranged, but one for to make receiver enter the spacing of power down mode, main frame will be removed emission application TRXR35 when VOIST37 is speech state (high level) in conversion, make transmitter can be engaged in other professional or shutdown and have a rest.As second section 313 dead number call process in the sequential chart.When main frame changes the control of catchword/speech, it will with non-switched VOICE38 signal distance still after form the synchronous reset signal of counter.Make to enter that counter begins counting by zero again behind the speech state, main frame can be conversed the time of giving orders or instructions by count value at intercourse.Call out last interruption before the speech state finishes in limited time, whether main frame will be analyzed also has informational needs to send, and whether will insert empty the calling, or stop encoder work.As second section 313 situation for the empty calling of insertion in the sequential chart, the segment of speech of this calling has been closed the emission application.When last interrupts to this section, because main frame does not determine shutdown, so will apply for emission again.Represent transmitter in time not to be ready among the figure and inserted the situation of four stand-by period 314.Calling out hypothesis for the 3rd section 315 is a calling in unlimited time, thus its calling sign indicating number many one (first add send out " * ").During the calling of last transmission, ending must add sends out " # " 316 so that shut down by the person of exhaling before signal in unlimited time is as shutdown, does not call out yard and dormancy but do not cause other receiver to take for to be.Represented this situation among the figure.Change the catchword state over to, distributing first interruption behind 1 and 1/8 second " # ".With the control signal Close All, VOIST37 uprises (speech attitude), closes to interrupt.Stop encoder work 317.
Automatic paging server implementation in the present embodiment as shown in Figure 4, its structure and each several part function are: local telephone 40 can be switched to " ring detection " module or " dial impulse detection and DC load " module through relay.Exchange voice signal through transformer coupled to " conversion of 2-4 line ", received signal 41 warp " DTMF pulsing detection " and " busy tone detection " modules of output detect double-tone and dial the number and take out stitches busy tone.And can exchange to public speech channel 47 by " analog switch ".VODER can be added on the transmission holding wire 42 according to the synthetic prompting of the data in the speech parameter storehouse of appointment speech.Wait to be sent during, " music stand by tone " is added to and sends on the holding wire 42.
The testing result of each detection module is delivered to a single-chip microcomputer (being called for short CPU) and is handled, and CPU controls the work of whole server according to testing result, and through bus, adapter and main-machine communication.Bus is made of 8 " data wire " 43 of CPU and " service request " 44, " read operation " 45, " write operation " 46 3 control lines.
The service process of automatic paging server is:
When idle, local telephone is connected to the ring detection module.When detecting bell signal, CPU makes the relay adhesive, and local telephone is switched to pulse detection and DC load module, shows " off-hook " to local telephone.VODER is synthesized suggestion voice: " the automatic paging platform asks you to dial in call number ".
When CPU analyzes the ringing number that the user dials in or receives that double-sound multi-frequency detector is after the ringing number of interrupt routine input.The indication VODER feeds back to the user with ringing number with voice and proofreads.If the user is on-hook in two seconds (or a certain stipulated time) not, CPU promptly sends emission application (stating in addition with the main-machine communication process) to main frame.When main frame is found when being illegal ringing number, the loopback error message will refuse to do further service, and information " ESC " is removed in loopback.CPU indication this moment VODER is sent information: " sorry, as not have this ringing number ".Relay is discharged show on-hook.If legal ringing number, main frame will respond.Cpu command music generation module sends the music stand by tone to the user.At this moment,, can send the application of cancellation emission, treat main frame agreement back loopback " ESC ", the CPU release relay to main frame if the busy tone detector detects user's on-hook.CPU receives that the indication VODER was sent " please speak " information, simultaneously analog switch is opened, and arrives public speech channel receiving exchange of speech when the sign indicating number state information was called out in emission that main frame transmits.A this information and calling yard emission needed for two seconds owing to launch the calling sign indicating number, so can finish simultaneously.Voiceband user just is sent to public speech channel and launches after this.Main frame constantly sends meter second information to server therebetween.Aft engine was sent battery has fired signal " ESC " to server in 10 seconds.The CPU release relay shows on-hook.A service loop ends.Carrying out calling in unlimited time, grouping busy when treating special calling, main frame can be by server again to customer requirements input password to carry out the authority audit.Its process is roughly the same called out sign indicating number and is received and review process.
Consider the consistency of communicating by letter, server and main-machine communication done following regulation with the manual operation platform:
Use 8 bit ASCII sign indicating numbers;
Server uses the output of a service request line (Hand shaking) application information; After main frame read information, this line was by " read operation " signal removal.
Main frame writes data in the register of write operation alignment server setting.Generator is interrupted in this write operation line and the input that triggers in the server, requires the server reading of data, or by server this register is carried out state-detection.
The communication format regulation:
* sign indicating number is defined as follows:
" 0 "～" 9 "---digital code
" A "---group busy sign indicating number
* character code (formation user cipher)
Remove "? " in addition complete middle ASCII numeral and character code, the capital and small letter special efficacy.
* specific function code:
" ESC "---removing resets
" DEL "---deletion one-bit digital or character
" # "---call sign in limited time
" * "---call sign in unlimited time
"? "--the inquiry of-user cipher
" CR "---emission application and sign
Below be the meaning of communications codes in the concrete application process:
Fig. 5 is the structured flowchart of receiver.Receiver in the present embodiment is made up of high frequency and two parts of decoding.The difference of HFS and ordinary numbers beep-pager only is: what its was exported is the audio frequency of 300-3000HZ, rather than digital signal.
In conjunction with block diagram, each several part function and correlation are described below respectively:
The information 51 of high-frequency unit 501 pairs of paging centers's emissions under central processing unit is controlled becomes audio signal 52 after receiving and postemphasising, and is added to decoder and recording playback control chip respectively.
Decoder is used for decoding to calling out sign indicating number, and its result 53 send central processing unit (single-chip microcomputer) to discern.It uses the superlative degree of single-chip microcomputer to interrupt, and can be interrupted by effectively reception information to guarantee any one user's operating process.The work of decoder is subjected to the control 501 of central processing unit equally.
Solid-state recording parts comprise the voice storage chip under recording playback control chip and its control.The voice storage chip of megabit provides two message address 54 by single-chip microcomputer.Can store four 8-10 second long speech.
Power amplifier produces sound in order to promote loud speaker.During playback, its input is the audio signal 55 of recording playback control output.Under live state, the audio signal 56 that decoder is put after part is amplified in advance can directly be added to power amplifier through live switch.
Central processing unit (single-chip microcomputer) is complete machine function management center.The switch of its control complete machine receiving function is to reduce electrical source consumption.
Peripheral circuit comprises console switch 511, redness and green indicating lamp 512,513, buzzer 514, shake machine 515, and circuit such as live switch, " house dog ", power source conversion.Wherein:
Console switch 511 is in order to realize the control operation of machine master to machine.After receiving the effective call sign indicating number, when the speech information of receiving is recorded,, can use the arrival of buzzer 514 or shake machine 515 giving new message warnings respectively, or play-over speech according to the difference of console switch storing position.Push switch button at ordinary times will be to single-chip microcomputer application operation disruption.Single-chip microcomputer is put the position according to console switch, carries out playback, setting/removing protective emblem or signal testing operation respectively.Redness and green indicating lamp 512,513 and buzzer, shake machine etc. are as various indications.Such as: be in accepting state; The recorded message of current broadcast is (red led) receiving at last, or existing protective emblem (green indicating lamp), can not destroyed by rush of water by new information; The operation of a setting/removing protective emblem is received; Can receive radio signals; Perhaps battery low-voltage is reported to the police.For guaranteeing the reliability of operation of receiver, be provided with " house dog " circuit.Simultaneously, all detections have been added in the software.Make and after being subjected to powerful interference, can resume work automatically, or report to the police to the machine master.The low voltage transition that power-switching circuit is used for dry cell is required higher voltage.
Fig. 6 is the reception processing procedure main process block diagram of receiver program.In conjunction with FB(flow block), the operation of receiver process is described below:
Enter first flow chart element of upper left quarter, it is 1/11 second regularly that central processing unit (being called for short CPU) is provided with search.During this period of time open the reception control signal, make high-frequency unit and decoder functions, search diphthong coding signal.If do not receive coding during this period of time, FB(flow block) turns to top-right branch, will be decided to be 10/11 second the intermittent time, closes reception, to repeat search process again in next second.If decoder analyzes a double-tone multi-frequency coding, it will send to CPU and interrupt application.CPU reads in it through interrupt handling routine.Program flow is to the bottom.If special functional code " # " will be ignored, program is got back to search condition.If first sign indicating number that searches, it is two seconds that search condition will be retimed.If analyzing first sign indicating number is guidance code in unlimited time " * ", program is got back to search condition after sign in unlimited time is set; Otherwise enter current sign indicating number and preserve processing block.For second that searches later sign indicating number, if equate with a last sign indicating number, program will be thought the sign indicating number fracture (because any two continuous bit codes of emission system regulation can be not identical) that radio interference causes, and ignore, and program is got back to search condition.Otherwise it is 0.5 second that program is retimed search condition, and judges whether double sign code " D ".If the sign indicating number of receiving is special functional code " D ", then CPU takes out the sign indicating number that the last time receives automatically and replaces it.Preserve current sign indicating number in order to next sign indicating number relatively after, the sign indicating number that CPU will receive compares with the calling sign indicating number step-by-step of self.If do not meet (group busy a yard A thinks meet), will regularly turn to top-right flow process with 10 seconds intermittence, after the shutdown dormancy, restart search procedure.All call out sign indicating number and relatively finish, CPU will change the FB(flow block) bottom over to, start receiving course.If there is not sign in unlimited time, an information recording receiving course of 10 seconds in limited time will be begun.Comprise: open the power amplifier power supply, remove existing possible " playback " state, search out not protected storage position information the earliest, start the recording playback control circuit, the recording of prescribing a time limit 10 seconds.The determining positions that while puts according to console switch: be to provide buzzerphone, still rotate the machine that shakes, or open live switch and directly broadcast speech by power amplifier.If sign in unlimited time is arranged, will begin a message pick-up process in unlimited time.In the message pick-up process in unlimited time, do not start recording circuit, except console switch put the seat in the plane that shakes, all play-over speech.Monitor simultaneously whether decoder receives any dual-tone multifrequency sign indicating number or the carrier frequency detection signal disappears, the appearance of one of both of these case all will make receiving course finish, and the upper left flow chart element of program flow returns begins the search procedure that next bar is called out sign indicating number.Be in electricity-saving state when CPU is flat, have only and just carry out work when needing it to carry out a certain operation or supervision.Its clock frequency is also selected very lowly, to reduce power consumption.During playback operation, console switch is served to the CPU application by interrupt line.CPU opens the power amplifier power supply, finds out an information position current to be put, and after the startup recording playback control, promptly begins playback, whenever puts once, waits to put the information position and transfers next the bar information of sensing automatically to.More than these details that just can programme according to conventional knowledge, do not represent in FB(flow block).
Leading indicator in the present embodiment:
Transmitting station frequency range and modulation system: very high frequency(VHF) (VHF) 150 megahertz wave bands, simulation narrow-band FM.4.5 kilo hertzs of sesames of maximum frequency deviation.
Method of calling: selective call, group calling is grouied busy.
Call out sign indicating number: 4 decimal codes.
Voice messaging length: information is 10 seconds/every in limited time.Broadcast message (not recording) length is not limit.
Receiver
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. owing to use double-tone multi-frequency coding,, 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.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, and making the 1/10～1/20(measured current when not having called receiver power consumption to be reduced to be about uninterrupted reception is 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; Use No. seven batteries of two joint capacity, 500 MAHs, be not related to function and wait for continuously more than 15 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 (5)
1, a kind of voice paging method that is used for speech beeper system is characterized in that may further comprise the steps:
(1) the voice paging content comprises customer call sign indicating number information and voice messaging;
(2) said customer call sign indicating number information adopts the Dual Tone Multifrequency coding rule, and digital " 0 "～" 9 " are used as unique user and call out numbering; Letter " A "～" D " reaches " # ", " * " is special functional code, comprises grouping busy sign indicating number spacing sign indicating number, double sign code, guiding call sign indicating number in unlimited time and end of calling code in unlimited time;
(3) the voice paging transmission timing is the said customer call sign indicating number information that sends earlier, sends said voice messaging again;
(4) said customer call sign indicating number sending order is: by end position to the first place, every transmission one bit code, one sends the sign indicating number time at interval, give a bit code again, a bit code of Fa Songing continues one long period with " waking up " receiver at first, replaces a few positions that the user wails with the said sign indicating number of grouping busy, then formation is grouied busy or divided into groups and grouies busy, when after a bit code identical with the sign indicating number that has just sent, then send said double sign elsewhere and send code;
(5) said voice messaging is divided into voice and voice in unlimited time in limited time, said voice time minimum length in unlimited time equals voice length in limited time, if send voice in unlimited time, then add before wailing and send out said guiding call sign indicating number in unlimited time sending the user, when sending voice end in unlimited time, send end of calling code in unlimited time;
(6) receiver user is provided with search, wait and three kinds of states of dormancy, the receiver start is searched for, is waited for by the certain hour loop cycle, said search, latent period time span are less than first duration length of calling out sign indicating number of said transmission, said dormancy time equals a voice length in limited time, when searching a string double-tone multi-frequency coding of transmission, to compare by turn with the catchword of self, if all meet, receiving speech information then, if any bit code does not meet, shutdown immediately enters resting state, moves in circles with this.
2, a kind of speech beeper system that adopts the power saving of the described method of claim 1, formed by page transmission platform and a plurality of receiver, it is characterized in that said page transmission platform comprises the more than one manual operation platform that can be made of the microphone of the keyboard of manually squeezing into the calling sign indicating number and reception voice, change the calling sign indicating number of squeezing into the encoder of touch-tone signal into chronologically, be modulated at touch-tone signal and voice signal on the high-frequency signal and be transmitted into the radio transmitter in space; Said receiver comprises the high-frequency unit that the information of said 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; said receiver each several part function is carried out the central processing unit of control and management and can carry out various functions showing, protect the relevant peripheral circuit of above-mentioned parts trouble free service.
3, speech beeper system as claimed in claim 2, it is characterized in that said page transmission platform also comprises the automatic paging server that can transmit the information that the local telephone line transmits more than one automatically, be used for transmission information is carried out the microcomputer of control and management, said each artificial operating desk all links to each other with the input of voice channel with an adapter by digital channel with the automatic paging server, the output of this adapter links to each other with said transmitter by public voice channel, links to each other with microcomputer by the common number passage.
4, as speech beeper system as described in the claim 3, it is characterized in that said encoder comprises that an energy reaches the coding circuit that " * ", " # " are converted to the dual-tone multifrequency sign indicating number with code " 0 "～" 9 ", " A "～" D ", the circuit that energy feeds code data for this circuit by said sequential reaches one and controls this circuit generation coding or out-of-work circuit chronologically.Reach the circuit that manages and monitor by said microcomputer.
5, as claim 3 or 4 described speech beeper systems, it is characterized in that said automatic paging server comprises the testing circuit of User Status, the identification of subscriber dialing, record or repeat circuit, signal prompt sound generator switches to user speech the analog switch of transmitter or public speech channel.And through the circuit of digital channel and management computer communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101478 CN1103739A (en) | 1994-03-02 | 1994-03-02 | Electricity-saving double-tone multi-frequency coding voice paging method and voice paging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94101478 CN1103739A (en) | 1994-03-02 | 1994-03-02 | Electricity-saving double-tone multi-frequency coding voice paging method and voice paging system |
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| Publication Number | Publication Date |
|---|---|
| CN1103739A true CN1103739A (en) | 1995-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94101478 Pending CN1103739A (en) | 1994-03-02 | 1994-03-02 | Electricity-saving double-tone multi-frequency coding voice paging method and voice paging system |
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| CN (1) | CN1103739A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466529C (en) * | 2006-06-30 | 2009-03-04 | 华为技术有限公司 | Method and system for implementing multi-media recording |
| CN110097750A (en) * | 2019-05-14 | 2019-08-06 | 北京亦通海科技有限公司 | A kind of audio receiving end switch controller, equipment and system |
-
1994
- 1994-03-02 CN CN 94101478 patent/CN1103739A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466529C (en) * | 2006-06-30 | 2009-03-04 | 华为技术有限公司 | Method and system for implementing multi-media recording |
| CN110097750A (en) * | 2019-05-14 | 2019-08-06 | 北京亦通海科技有限公司 | A kind of audio receiving end switch controller, equipment and system |
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