CN206559368U - The live cell broadcasting system of one key - Google Patents

The live cell broadcasting system of one key Download PDF

Info

Publication number
CN206559368U
CN206559368U CN201720109451.8U CN201720109451U CN206559368U CN 206559368 U CN206559368 U CN 206559368U CN 201720109451 U CN201720109451 U CN 201720109451U CN 206559368 U CN206559368 U CN 206559368U
Authority
CN
China
Prior art keywords
voice
broadcast
control
live
vlcm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720109451.8U
Other languages
Chinese (zh)
Inventor
吴宁宁
刘枫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ji'nan Spring Electronics Co Ltd
Original Assignee
Ji'nan Spring Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ji'nan Spring Electronics Co Ltd filed Critical Ji'nan Spring Electronics Co Ltd
Priority to CN201720109451.8U priority Critical patent/CN206559368U/en
Application granted granted Critical
Publication of CN206559368U publication Critical patent/CN206559368U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)

Abstract

The utility model discloses the live cell broadcasting system of a key, including client part, service end part, control administrative section, broadcast system part composition.Realize that a key of control signaling and voice launches signaling using wireless communication technology by client part first;Service end and synthesized voice issue terminal part are for realizing that the reception and forwarding of wireless signaling and voice, recorded broadcast sound are played, text-to-speech is played, live sound playing function, pass through interchanger and computer management management software, and carry out the more new management of recorded broadcast sound, broadcasted eventually through broadcast system part, realize the live cell broadcasting system of a key.The utility model is simple in construction, deployment is flexible, quick convenient, is not only applicable to light rail, railroad platform broadcast, can equally be well applied to the places such as park, super, the High Rise Business office building of large-scale business.

Description

The live cell broadcasting system of one key
Technical field
The utility model is related to the live apparatus field of Cell Broadcast CB, particularly a kind of live cell broadcasting system of a key.
Background technology
High ferro platform part is typically made up of " 1 main platform and many island intermediate platforms ", and station is guarantee passenger Safety is changed in the boarding of platform link, allows each platform passenger traffic person on duty using hand-held wireless microphone to boarding train on platform Passenger carry out safety guiding broadcast, this broadcast mode is referred to as " platform Cell-Broadcast mode ", and broadcast system is again AT STATION It is referred to as " platform cell broadcasting system ".This system takes organically tissue passenger's boarding train, using platform broadcast guiding trip The safety of objective boarding train, deploys many set platform broadcast cells subsystem respectively on many island intermediate platforms.
The subsystem is by wireless microphone, the reception antenna of shelter ceiling erection, intermediate amplifier, feeder line transmission, nothing The flourishing device of line tunable receiver, audio input unit, audio output unit, signal power, noise suppressor, platform roofing are raised one's voice The links such as device are constituted.Wherein " wireless microphone, the reception antenna of shelter ceiling erection, intermediate amplifier, feeder line are transmitted, nothing Line tunable receiver, audio signal amplifier, platform loudspeaker " is disposed respectively, both:Many complete equipments are disposed altogether;And audio The equipment such as signal input unit, audio signal output unit, noise suppression device belong to the common category of platform Cell Broadcast CB subsystem Equipment.
Because the transmitting range of the change of platform electromagnetic environment, radio receiver hydraulic performance decline, wireless microphone is nearer(80 Rice), the comprehensive wiring construction reason such as lack of standardization, in platform artificial mouth sowing time, most of platform occur reception of wireless signals less than Or platform passenger boarding safety can only have been had a strong impact in the phenomenon that could be used close to reception antenna position, the presence of the phenomenon Broadcast publicity.Simultaneously because platform canopy is without maintenance packway, because can not on-call maintenance when Cell Broadcast CB reception antenna breaks down Or equipment replacement is carried out, cause platform Cell Broadcast CB subsystem in paralyzed state.
There is the above between prior art, the present utility model people have developed a set of new live cell of a key Broadcast system.
Utility model content
The purpose of this utility model is to solve the above problems, devise the live cell broadcasting system of a key.
Realize that above-mentioned purpose the technical solution of the utility model is, is specifically retouched to the utility model below in conjunction with the accompanying drawings State, as illustrated, the live cell broadcasting system of a key, including client part(1), service end part(2), control administrative section (3), broadcast system part(4)Constitute.First by client part(1)Control signaling and voice are realized using wireless communication technology A key transmitting signaling;Service end and synthesized voice issue terminal part be used to realizing wireless signaling and voice reception and forwarding, Recorded broadcast sound is played, text-to-speech is played, live sound playing function, by the network switch and computer management management software, And the more new management of recorded broadcast sound is carried out, broadcasted eventually through broadcast system part, realize the live cell broadcasting system of a key.This reality With new structure is simple, deployment is flexible, quick convenient, light rail, railroad platform broadcast are not only applicable to, public affairs are can equally be well applied to The places such as garden, super, the High Rise Business office building of large-scale business.
Preferably, the client part(1), service end part(2)With broadcast system part(4)According to not having two stations Platform is that a cell carries out classified zoning, client part(1), service end part(2)With broadcast system part(4)Each subregion Between by controlling administrative section(3)It is managed control.
Preferably, the client part(1)By wireless digital intercom(11)And synthesized voice issue terminal(12)Structure Into.Wherein wireless digital intercom(11)The corresponding control instruction signal of button and live audio are launched by wireless UHF channels Signal controls server to VSCS-266 voice signalings(21);Synthesized voice issue terminal(12)Text envelope is sent by network system Cease and give VLCM-1212 voice Network Management Equipments(22).
Preferably, the service end part controls server by VSCS-266 voice signalings(21), VLCM-1212 voices Network Management Equipment(22)Constitute.Wherein, VSCS-266 voice signalings control server(21)Receive and come from wireless digital intercom (11)Control and live voice signal and VLCM-1212 voice Network Management Equipments are transferred to by wired mode(22);VLCM- 1212 voice Network Management Equipments(22)Receive and control server from VSCS-266 voice signalings(21)Control instruction and voice letter Number and synthesized voice issue terminal(12)The text message sent by network, is triggered not according to the classified zoning of control instruction signal Recorded broadcast voice together, the classification transfer VSCS-266 voice signaling control servers according to control instruction signal(21)Live language Sound, according to synthesized voice issue terminal(12)The text message that is sent through network system simultaneously generates synthesized voice, while VLCM-1212 languages Sound Network Management Equipment(22)Audio input unit is output a control signal to according to recorded broadcast sound, live sound, synthesized voice respectively(41)Control Interface processed.
Preferably, the control administrative section(3)By switch device(31), computer equipment(32)Composition, is calculated Equipment(32)Dispose wireless digital intercom(11), VSCS266 voice signalings control server(21), VLCM-1212 voice networks Tube apparatus(22)Management software, complete to wireless digital intercom(11), VSCS266 voice signalings control server(21)、 VLCM-1212 voice Network Management Equipments(22)Configuration, while by network to VLCM-1212 voice Network Management Equipments(22)Recorded The more new management of broadcast, network connection is passed through between switch device, computer equipment, VLCM-1212 voice Network Management Equipments.
Preferably, the broadcast system part(4)Including audio input unit(41), audio output unit(42), number Word ambient noise suppressor(43), power amplifier(44), loudspeaker(45), noise transducer(46)Composition.Audio input list Member(41)VLCM-1212 voice Network Management Equipments are accessed by wired mode(22)Broadcast conditional as needed is sended over respectively Recorded broadcast sound, live sound, synthesized voice signal, it is synchronous to receive VLCM-1212 voice Network Management Equipments(22)The recorded broadcast sound that sends over, The corresponding control signal of live sound, synthesized voice;Audio signal input, control signal input are supported simultaneously, and according to audio signal And control signal is synchronized or selectively exported.Audio output unit(42), audio input list is accessed by wired mode Member(41)With power amplifier(44), receive and come from audio input unit(41)The audio signal sent, by signal point Area handles and selected the voice-grade channel that correspondence is exported to power amplifier(44).Power amplifier(44), connected by wired mode Connect audio output unit(42)And loudspeaker(45);Complete to receive audio output unit(42)The audio signal and process of offer are put Drive the speaker after big(45)Sound is presented and reduced.Digital environment noise suppressor(43), pass through wired mode access noise Sensor(46)And audio output unit(42), complete noise suppressing function, it is ensured that the quality that sound is presented.
Preferably, the VLCM-1212 voices Network Management Equipment(22), there is the equipment live sound to input and export, record Broadcast output, synthesized voice export three functions.Live sound, passes through wireless digital intercom(11)The speech audio of generation and correspondingly Control signal through VSCS-266 voice signalings control server(21)VLCM-1212 voice Network Management Equipments are transferred to after reception (22)Control signal access interface and live sound input port, while VLCM-1212 voice Network Management Equipments(22)At inside Live message number is output to audio input unit by reason through audio common port, and it is single that control signal is synchronously input to audio access Member.Recorded broadcast sound, first, needs preset recorded broadcast sound file, passes through VLCM-1212 voice Network Management Equipments(22)Configurator is implanted into this and set In standby;Secondly, corresponding recorded broadcast sound control signal is received, recorded broadcast sound is triggered in the presence of control signal, end is shared through audio Mouth is output to audio input unit, and control signal is synchronously input to audio input unit.Synthesized voice, passes through VLCM-1212 voices Network Management Equipment(22)Configurator is by text message write device, in wireless digital intercom(11)Send the work of control signal Under, after the text information processing in equipment and synthesized voice will be generated, the synthesized voice of generation is defeated by sharing audio output port Enter to audio input unit, while the control signal of generation is sent into audio input unit(41).
Beneficial effect:
It is to solve the problems, such as transmission range using the technical solution of the utility model one;Two be the flexibility for solving broadcast Problem, the broadcast mode both broadcast by Traditional Man mouth is changed into triggering control recorded broadcast broadcast mode+triggering and controls artificial mouth to broadcast mould Formula+triggering control text-to-speech broadcast mode;Three be to solve the problem of deployment facilitates;Four be solve O&M convenience and Safety issue;Five the problem of be reduction of operation management expense.
First, do not limited by broadcast distances, wireless digital intercom can be broadcasted any point on platform.
2nd, more front end signal source receivings and transmission link are saved, wireless digital intercom reaches the wireless of broadcast computer room Transmission range>1000 meters.Save more links, then save more O&M links, reduction operation and maintenance expenses are used, and save cost of erection With.When original system has failure, platform O&M link is complicated, and needs night work high above the ground, and all kinds of safety works ensure difficulty Increase, after the system, in the absence of platform O&M operation phenomenon, greatly improves safety guarantee coefficient.
3rd, traditional whole mouth broadcast mode is changed, using the broadcast of recording playing mode, it is possible to decrease 85% broadcast labor intensity, Alleviate the operating pressure of person on duty.
4th, using wireless digital intercom, it can be kept in touch with existing communication service in station, reduce the carrying number of equipment Amount, realizes a kind of two kinds of usages of equipment.
Brief description of the drawings
Fig. 1 is the utility model structural relation schematic diagram;
Fig. 2 is to use the transmission range schematic diagram after the live cell broadcasting system of a key;
Fig. 3 is the live cell broadcasting system equipment room connection diagram of the key of platform one;
1- client parts;11- wireless digital intercoms;12- synthesized voice issue terminals;2- service ends part;21- VSCS-266 voice signalings control server;22-VLCM-1212 voice Network Management Equipments;3- controls administrative section;31- interchangers Equipment;32- computer equipments;4- broadcast systems part;41- audio input units;42- audio output units;43- digital environments Noise suppressor;44- power amplifiers;45- loudspeakers;46- noise transducers.
Embodiment
The utility model is specifically described below in conjunction with the accompanying drawings, as illustrated, the live cell broadcasting system of a key, bag Include client part(1), service end part(2), control administrative section(3), broadcast system part(4)Constitute.First by client Hold part(1)The key for realizing control signaling and voice using wireless communication technology launches signaling;Service end and synthesized voice issue Terminal part is for realizing that the reception and forwarding of wireless signaling and voice, recorded broadcast sound are played, text-to-speech is played, live sound is broadcast Playing function, by the network switch and computer management management software, and carries out the more new management of recorded broadcast sound, eventually through broadcast Components of system as directed is broadcasted, and realizes the live cell broadcasting system of a key.The utility model is simple in construction, deployment is flexible, quick convenient, no But broadcasted suitable for light rail, railroad platform, can equally be well applied to the places such as park, super, the High Rise Business office building of large-scale business.
Preferably, the client part(1), service end part(2)With broadcast system part(4)According to not having two stations Platform is that a cell carries out classified zoning, client part(1), service end part(2)With broadcast system part(4)Each subregion Between by controlling administrative section(3)It is managed control.
Preferably, the client part(1)By wireless digital intercom(11)And synthesized voice issue terminal(12)Structure Into.Wherein wireless digital intercom(11)The corresponding control instruction signal of button and live audio are launched by wireless UHF channels Signal controls server to VSCS-266 voice signalings(21);Synthesized voice issue terminal(12)Text envelope is sent by network system Cease and give VLCM-1212 voice Network Management Equipments(22).
Preferably, the service end part controls server by VSCS-266 voice signalings(21), VLCM-1212 voices Network Management Equipment(22)Constitute.Wherein, VSCS-266 voice signalings control server(21)Receive and come from wireless digital intercom (11)Control and live voice signal and VLCM-1212 voice Network Management Equipments are transferred to by wired mode(22);VLCM- 1212 voice Network Management Equipments(22)Receive and control server from VSCS-266 voice signalings(21)Control instruction and voice letter Number and synthesized voice issue terminal(12)The text message sent by network, is triggered not according to the classified zoning of control instruction signal Recorded broadcast voice together, the classification transfer VSCS-266 voice signaling control servers according to control instruction signal(21)Live language Sound, according to synthesized voice issue terminal(12)The text message that is sent through network system simultaneously generates synthesized voice, while VLCM-1212 languages Sound Network Management Equipment(22)Audio input unit is output a control signal to according to recorded broadcast sound, live sound, synthesized voice respectively(41)Control Interface processed.
Preferably, the control administrative section(3)By switch device(31), computer equipment(32)Composition, is calculated Equipment(32)Dispose wireless digital intercom(11), VSCS266 voice signalings control server(21), VLCM-1212 voice networks Tube apparatus(22)Management software, complete to wireless digital intercom(11), VSCS266 voice signalings control server(21)、 VLCM-1212 voice Network Management Equipments(22)Configuration, while by network to VLCM-1212 voice Network Management Equipments(22)Recorded The more new management of broadcast, network connection is passed through between switch device, computer equipment, VLCM-1212 voice Network Management Equipments.
Preferably, the broadcast system part(4)Including audio input unit(41), audio output unit(42), number Word ambient noise suppressor(43), power amplifier(44), loudspeaker(45), noise transducer(46)Composition.Audio input list Member(41)VLCM-1212 voice Network Management Equipments are accessed by wired mode(22)Broadcast conditional as needed is sended over respectively Recorded broadcast sound, live sound, synthesized voice signal, it is synchronous to receive VLCM-1212 voice Network Management Equipments(22)The recorded broadcast sound that sends over, The corresponding control signal of live sound, synthesized voice;Audio signal input, control signal input are supported simultaneously, and according to audio signal And control signal is synchronized or selectively exported.Audio output unit(42), audio input list is accessed by wired mode Member(41)With power amplifier(44), receive and come from audio input unit(41)The audio signal sent, by signal point Area handles and selected the voice-grade channel that correspondence is exported to power amplifier(44).Power amplifier(44), connected by wired mode Connect audio output unit(42)And loudspeaker(45);Complete to receive audio output unit(42)The audio signal and process of offer are put Drive the speaker after big(45)Sound is presented and reduced.Digital environment noise suppressor(43), pass through wired mode access noise Sensor(46)And audio output unit(42), complete noise suppressing function, it is ensured that the quality that sound is presented.
Preferably, the VLCM-1212 voices Network Management Equipment(22), there is the equipment live sound to input and export, record Broadcast output, synthesized voice export three functions.Live sound, passes through wireless digital intercom(11)The speech audio of generation and correspondingly Control signal through VSCS-266 voice signalings control server(21)VLCM-1212 voice Network Management Equipments are transferred to after reception (22)Control signal access interface and live sound input port, while VLCM-1212 voice Network Management Equipments(22)At inside Live message number is output to audio input unit by reason through audio common port, and it is single that control signal is synchronously input to audio access Member.Recorded broadcast sound, first, needs preset recorded broadcast sound file, passes through VLCM-1212 voice Network Management Equipments(22)Configurator is implanted into this and set In standby;Secondly, corresponding recorded broadcast sound control signal is received, recorded broadcast sound is triggered in the presence of control signal, end is shared through audio Mouth is output to audio input unit, and control signal is synchronously input to audio input unit.Synthesized voice, passes through VLCM-1212 voices Network Management Equipment(22)Configurator is by text message write device, in wireless digital intercom(11)Send the work of control signal Under, after the text information processing in equipment and synthesized voice will be generated, the synthesized voice of generation is defeated by sharing audio output port Enter to audio input unit, while the control signal of generation is sent into audio input unit(41).
Keyword annotation in the live cell broadcasting system of one key:
Live sound:The voice signal generated by wireless digital intercom, referred to as live sound.Live sound passes through wireless digital pair Say that the launch channel of machine is transmitted into corresponding VSCS-266 voice signalings through antenna and controlled on the reception antenna of server, the signal After restoring voice signal through VSCS-266 voice signalings control server process VLCM-1212 is sent to through live sound output port The live sound input port of voice webmaster.
Recorded broadcast sound:The related recording file recorded and generated according to the broadcast message of setting by professional recording personage, Abbreviation recorded broadcast sound.Configuration manager of the recorded broadcast sound as desired through VLCM-1212 voice webmasters is written to VLCM-1212 voices In storage device in webmaster.
Synthesized voice:The content that will be broadcasted(Content is represented with text, numeral, alphabetic mode)Pass through VLCM-1212 languages The configuration manager of sound webmaster is written in the storage device in VLCM-1212 voice webmasters, according to wireless digital intercom The control signal of transmission, which triggers the content and generates voice by the text-to-speech unit in VLCM-1212 voice webmasters, to be believed Number, which is referred to as synthesized voice.
Control signal:Control signal is divided to input control signal and two kinds of classifications of output control signal.Input control signal by Wireless digital intercom is produced by its button, is forwarded to after receiving identification through VSCS-266 voice signalings control server The control input port of VLCM-1212 voice webmasters;Output control signal is believed by VLCM-1212 voices webmaster according to three kinds of voices Number operation mode, the synchronous control signal that produces simultaneously is sent to audio input unit.
Technical characteristic of the utility model without description can be achieved by the prior art, and will not be repeated here.Certainly, on It is not that, to limitation of the present utility model, the utility model is also not limited to the example above to state bright.The art it is general The variations, modifications, additions or substitutions that logical technical staff is made in essential scope of the present utility model, should also belong to this practicality New protection domain.

Claims (5)

1. the live cell broadcasting system of a key, it is characterised in that:Including client part, service end part, control administrative section, Broadcast system part is constituted;Client part, service end part and broadcast system part are a cell according to each two platform Classified zoning is carried out, by controlling administrative section between client part, each subregion in service end part and broadcast system part It is managed control;
Client part is made up of wireless digital intercom and synthesized voice issue terminal;
Service end part controls server, VLCM-1212 voice Network Management Equipments to constitute by VSCS-266 voice signalings;
Control administrative section is made up of switch device, computer equipment,
Broadcast system part include audio input unit, audio output unit, digital environment noise suppressor, power amplifier, Loudspeaker, noise transducer composition.
2. the live cell broadcasting system of a key according to claim 1, it is characterised in that:FTP client FTP:Wireless digital Intercom launches the corresponding control instruction signal of button by wireless UHF channels and live audio signal is believed to VSCS-266 voices Order control server;Synthesized voice issue terminal sends text message by network system and gives VLCM-1212 voice Network Management Equipments.
3. the live cell broadcasting system of a key according to claim 1, it is characterised in that:Service end part:VSCS-266 Control and live voice signal of the voice signaling control server reception from wireless digital intercom are simultaneously passed by wired mode It is defeated by VLCM-1212 voice Network Management Equipments;VLCM-1212 voices Network Management Equipment is received controls clothes from VSCS-266 voice signalings The text message that the control instruction and voice signal and synthesized voice issue terminal of device of being engaged in are sent by network, believes according to control instruction Number classified zoning trigger different recorded broadcast voices, transfer VSCS-266 voice signalings according to the classification of control instruction signal and control The live voice of server, the text message sent according to synthesized voice issue terminal through network system simultaneously generate synthesized voice, simultaneously VLCM-1212 voices Network Management Equipment outputs a control signal to audio input unit respectively according to recorded broadcast sound, live sound, synthesized voice Control interface.
4. the live cell broadcasting system of a key according to claim 1, it is characterised in that:Control administrative section:Interchanger Pass through network connection between equipment, computer equipment, VLCM-1212 voice Network Management Equipments.
5. the live cell broadcasting system of a key according to claim 1, it is characterised in that:Broadcast system part:Audio is defeated Enter unit and the record that broadcast conditional as needed is sended over respectively of VLCM-1212 voices Network Management Equipments is accessed by wired mode Broadcast, live sound, synthesized voice signal, it is synchronous receive recorded broadcast sound, live sound that VLCM-1212 voice Network Management Equipments send over, The corresponding control signal of synthesized voice;Audio signal input, control signal input are supported simultaneously, and are believed according to audio signal and control Number synchronize or selectively export;
Audio output unit, audio input unit and power amplifier are accessed by wired mode, are received and are come from audio input list The audio signal that member is sent, by signal multidomain treat-ment and selects the voice-grade channel that correspondence is exported to power amplifier;
Power amplifier, audio output unit and loudspeaker are connected by wired mode;Complete to receive audio output unit offer Audio signal and after amplification drive the speaker to sound present reduce;Digital environment noise suppressor, passes through wired side Formula access noise sensor and audio output unit, complete noise suppressing function, it is ensured that the quality that sound is presented.
CN201720109451.8U 2017-02-06 2017-02-06 The live cell broadcasting system of one key Expired - Fee Related CN206559368U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720109451.8U CN206559368U (en) 2017-02-06 2017-02-06 The live cell broadcasting system of one key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720109451.8U CN206559368U (en) 2017-02-06 2017-02-06 The live cell broadcasting system of one key

Publications (1)

Publication Number Publication Date
CN206559368U true CN206559368U (en) 2017-10-13

Family

ID=60010050

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720109451.8U Expired - Fee Related CN206559368U (en) 2017-02-06 2017-02-06 The live cell broadcasting system of one key

Country Status (1)

Country Link
CN (1) CN206559368U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110933618A (en) * 2019-12-16 2020-03-27 广州市迪士普音响科技有限公司 Broadcasting system and paging method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110933618A (en) * 2019-12-16 2020-03-27 广州市迪士普音响科技有限公司 Broadcasting system and paging method thereof

Similar Documents

Publication Publication Date Title
CN205490801U (en) Urgent telephone system of highway network
CN103974199B (en) A kind of broadcast system for issuing emergency information
CN101631032B (en) Method, device and system for realizing multilingual meetings
CN106453005A (en) Intelligent air-conditioning system having personalized speech broadcast function
CN206559368U (en) The live cell broadcasting system of one key
CN203734789U (en) Voice broadcasting intercommunication system
CN206517591U (en) A kind of classroom audible environment system
CN203251370U (en) Visual intercom system
CN202395931U (en) Digitalized internet protocol (IP) network broadcast system
CN206023799U (en) A kind of novel digital wireless communication networks broadcast system
CN109274848A (en) Full duplex talkback unit and cat eye device
CN208754281U (en) Wireless speech based on 2/3/4G network broadcasts intercom system
CN107566368A (en) Voice communication system and its Application way for ground control's node
CN210839550U (en) Voice fusion communication system of communication command vehicle
CN208691520U (en) WIFI speaker
CN203151514U (en) Public broadcasting system with automatic voice synthesis function
CN207820253U (en) A kind of Radio Network System and wireless aps with voice broadcast function
CN205407845U (en) Multifunctional conference system
CN206313907U (en) Investigation monitoring command system
CN108564844A (en) A kind of classroom computer teaching system
CN109391285A (en) A kind of multiband police service converged communication system
CN204425559U (en) Digitlization IP network intercommunication broadcast system
CN106850932A (en) A kind of digital intelligent audio communication system
CN108573627A (en) A kind of computer teaching system and teaching process
CN206042042U (en) Intelligence stereomicrophone system

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171013

Termination date: 20210206

CF01 Termination of patent right due to non-payment of annual fee