CN201813373U - Public broadcasting system adopting numerical control network mode - Google Patents
Public broadcasting system adopting numerical control network mode Download PDFInfo
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- CN201813373U CN201813373U CN2010201985811U CN201020198581U CN201813373U CN 201813373 U CN201813373 U CN 201813373U CN 2010201985811 U CN2010201985811 U CN 2010201985811U CN 201020198581 U CN201020198581 U CN 201020198581U CN 201813373 U CN201813373 U CN 201813373U
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- calling station
- power amplifier
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Abstract
A public broadcasting system adopting a numerical control network mode comprises a host, at least one control input device and at least one sound source; a first branch relay, a second branch relay and a third branch relay are connected in series and then connected into the host; the first branch relay is connected with a calling station; the second branch relay is connected with addressable power amplifiers; the third branch relay is connected with an addressable terminal; each addressable power amplifier can be connected with the calling station; the addressable terminal is connected with the calling station or the power amplifier; the calling station is an addressable remote calling station comprising input equipment; the power amplifiers are connected with a sound box; the host is connected with the calling station; and the input equipment comprises an expending keyboard. The public broadcasting system plays and transmits music, prompt tone, information tone, calling tone and a control command in a bus system form through network cables, realizes the audio signal transmission with small signal, long distance, low loss, low mutual interference and high reliability, is easy for maintenance and has favorable compatibility.
Description
Technical field
The utility model belongs to Public Address system, particularly the Public Address system of numerical control network mode.
Background technology
Public Address system is widely used in school, office building, factory and public place etc., and existing Public Address system adopts parts such as diverter switch, power amplifier, loud speaker, microphone, source of sound to connect by cable etc. usually.This connected mode is because of relating to the connection of a plurality of parts, connect complexity, and safeguard very inconvenience, though wherein the part parts have been realized networked management, but, cause various kinds of equipment to be difficult for inserting in the Public Address system because system design lacks integrated planning.
Traditional broadcast system general type is more single, is divided into two kinds of decentralized device and centralized device, and centralized device is divided into two kinds in Audio Matrix and subregion matrix again.Equipment is more single for the alternative of engineering proposal, can not satisfy the different demands that the client installs.
The utility model content
The utility model purpose is to provide a kind of Public Address system of numerical control network mode, play simultaneously by the built-in source of sound of multichannel, the user can freely select source of sound to play in terminal, is not easy to safeguard to solve in the existing Public Address system, inserts the problem of running the capacitive difference concurrently.
The utility model adopts following technical scheme:
A kind of Public Address system of numerical control network mode comprises:
Main frame, at least one control loader and at least one source of sound of being connected with described main frame, first branching repeater, described main frame is inserted in second branching repeater and the 3rd branching repeater serial connection back, be connected with calling station on described first branching repeater, be connected with the addressable power amplifier on described second branching repeater, be connected with the addressable terminal on described the 3rd branching repeater, be connected with calling station on each described addressable power amplifier, be connected with calling station or power amplifier on the described addressable terminal, described calling station is the addressable remote calling station that comprises input equipments such as extended keyboard, be connected with audio amplifier on the described power amplifier, described main frame is connected with described calling station.
The broadcast of the built-in multichannel source of sound of the utility model, (DirectShow is an important member of DirectX family to the DirectShow technology that can provide by Microsoft, it provides high-quality media capture and playback capability under the windows platform, support several data form: ASF, MPG, AVI, MP3 and WAV, it is one of major technique of present Streaming Media exploitation, each hardware vendor all provides the api interface of supporting this technology), realize the binding of Industry Control plate multichannel sound card and built-in source of sound, control board can be play the built-in source of sound of multichannel simultaneously, realizes the different source of sound of zones of different broadcast.
The utility model links to each other with terminal equipment and calling station by the main frame of bus form with system, and can strengthen the transmission range of RS485 by splitter.System can carry out equipment apolegamy according to customer demand, both can realize that distributing layouted, and can realize Audio Matrix and subregion matrix again.Engineering merchant can be that it " makes " a cover broadcast system to measure according to client's actual needs, when satisfying the various demands of End-Customer, has greatly made things convenient for engineering merchant's wiring.
The utility model carries out the broadcast transmission of music, prompt tone, information tone, ring tone and control command by netting twine with the form of bus system, the audio signal bus is transmitted by differential mode, strengthen the antijamming capability of audio signal, realized the small-signal of audio signal, remote, low-loss, low phase mutual interference, highly-reliable transmission; Simultaneously, system configuration is flexible, and wiring is simple, is applicable to school, office building, factory and public place etc., is easy to maintenance, compatible good.And can realize auto-partition broadcasting and auto-partition marshalling broadcast capability (comprising that self-timing is play background music, self-timing is rung a bell and automatic fire control links); Manual sectorization broadcast (comprises that the broadcasting of manual call station, manual host computer control are broadcasted, telephone remote is broadcasted with manual subregion marshalling broadcast capability; Functions such as the self-defined unattended operation of system.Satisfy and play background music, local teaching, functions such as hearing examination.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the Public Address system example structure schematic diagram of the utility model numerical control network mode.
Embodiment
As shown in Figure 1, a kind of Public Address system of numerical control network mode comprises:
Main frame, at least one control loader (being connected described fire-fighting input point among Fig. 1) and at least one source of sound of being connected with described main frame, first branching repeater, described main frame is inserted in second branching repeater and the 3rd branching repeater serial connection back, be connected with calling station on described first branching repeater, be connected with the addressable power amplifier on described second branching repeater, be connected with the addressable terminal on described the 3rd branching repeater, be connected with calling station on each described addressable power amplifier, be connected with calling station or power amplifier on the described addressable terminal, described calling station is the addressable remote calling station that comprises input equipments such as extended keyboard, be connected with audio amplifier on the described power amplifier, described main frame is connected with described calling station.
Wherein, also be serially connected with one or more addressable power amplifiers on the described addressable power amplifier.
Wherein, also be serially connected with one or more addressable terminals on the described addressable terminal.
Wherein, first branching repeater, second branching repeater and the 3rd branching repeater are the branching repeater of same type.
Wherein, described first branching repeater, second branching repeater and the 3rd branching repeater have a plurality of and mutual serial connection back to insert described main frame respectively.
Wherein, be connected with source of sound and microphone on the described addressable power amplifier.This microphone can wired or wireless microphone.
Wherein, also be connected with telephone-broadcast controller (not shown) on the described main frame.
Wherein, described main frame also is connected with controlling computer by network.In the present embodiment, adopt existing soft interrupt module (Software Interrupt, SWI use SWI to visit the module of operating system routine or third party's production in RISC OS) to connect main frame and described controlling computer.
Wherein, described main frame is connected by the RS485 bus with described control loader.
Wherein, described main frame is connected by the RS485 bus with described calling station.
Wherein, described main frame is connected by the RS485 bus with described telephone-broadcast controller.
Wherein, also comprise the infrared control input controller that shakes that is connected with described main frame.
Wherein, also be connected between the source of sound that described main frame reaches with described main frame is connected by shaking control RS485 bus.By accepting shaking control or, making the source of sound input audio signal that is connected with described main frame of main frame by the control command that RS485 sends.
Can carry out power supply control to above-mentioned parts by employing order power-supply controller of electric in the said system.
In the present embodiment, the signal transmission is described below:
System signal transmission comprises transmission, the transmission of network computer control signal and the transmission of infrared remote-controlled signal etc. of transmission, telephone-broadcast control signal and broadcast voice signal of transmission, addressable remote calling station control signal and the call audio signals of source of sound audio signal and built-in background music transmission of audio signals, fire-fighting input control signal.Below introduce the transmission of each signal respectively:
One, source of sound audio signal and built-in background music transmission of audio signals
Source of sound audio signal input main frame, the built-in background music signal with in the main frame is provided with the decision alternative by the system in the main frame, after the main frame inter-process, main frame output Balanced Audio signal; The Balanced Audio signal is sent to each addressable terminal and addressable power amplifier through the branching repeater of each serial connection; The addressable terminal is selected or is assigned with this channel audio signal, is sent to power amplifier to audio amplifier after treatment and exports; This channel audio signal is selected or be assigned with to the addressable power amplifier, exports to audio amplifier after treatment.
Two, the transmission of fire-fighting input control signal
Fire-fighting input signal input control loader, main frame is by RS485 interface cyclic search control loader information, handle output RS485 serial signal by the control loader, the RS485 serial signal is imported described main frame, judge whether to respond this road fire-fighting input signal by the system's configuration information in the main frame, and the addressable terminal and the addressable power amplifier of corresponding built-in music signal and pressure connection.Among the application, main frame is realized the fire protection warning of broadcasting by connecting multichannel control loader.
The control signal of addressable terminal and addressable power amplifier is connected in the corresponding pressure of main frame output, be sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater, the addressable terminal of system's configuration information correspondence and addressable power amplifier force to connect the audio selection passage of regulation.
Main frame output Balanced Audio signal; The Balanced Audio signal is sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater; The addressable terminal of forcing to connect receives this channel audio signal, is sent to power amplifier to audio amplifier after treatment and exports; The addressable power amplifier of force connecting receives this channel audio signal, exports to audio amplifier after treatment.
Three, the transmission of addressable remote calling station control signal and call audio signals
Operation addressable remote calling station, main frame is by RS485 interface cyclic search addressable remote calling station operation information, by addressing remote call-in station output RS485 serial signal, RS485 serial signal input main frame, judge whether to respond this addressable remote calling station operation by the system's configuration information in the main frame, and the corresponding built-in music signal and the addressable terminal and the addressable power amplifier of calling.
The control signal of addressable terminal and addressable power amplifier is connected in the corresponding pressure of main frame output, be sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater, the calling addressable terminal of system's configuration information correspondence and addressable power amplifier force to connect the call audio passage of regulation.
Calling station output Balanced Audio signal; The Balanced Audio signal is sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater; Called addressable terminal receipt of call channel audio signal is sent to power amplifier to audio amplifier after treatment and exports; Called addressable power amplifier receipt of call channel audio signal is exported to audio amplifier after treatment.
Four, the transmission of telephone-broadcast control signal and broadcast voice signal
Described telephone-broadcast controller is connected and controlled to remote phone by telephone network, main frame is by RS485 interface cyclic search telephone-broadcast controller information, handle output RS485 serial signal by the telephone-broadcast controller, RS485 serial signal input main frame, judge whether to respond this telephone-broadcast input signal by the system's configuration information in the main frame, and the addressable terminal and the addressable power amplifier of corresponding built-in music signal and selection connection;
The control signal of addressable terminal and addressable power amplifier is connected in the corresponding selection of main frame output, be sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater, the calling addressable terminal of system's configuration information correspondence and addressable power amplifier force to connect the telephone-broadcast voice-grade channel of regulation.
The remote phone audio signal is transferred to the telephone-broadcast controller by telephone network, is transferred to main frame again after the telephone-broadcast controller is handled, output Balanced Audio signal after host process; The Balanced Audio signal is sent to each addressable terminal and addressable power amplifier through each serial connection branching repeater; The addressable terminal of being selected by telephone-broadcast receives the telephone-broadcast channel audio signal, is sent to power amplifier to audio amplifier after treatment and exports; The addressable power amplifier of being selected by telephone-broadcast receives the telephone-broadcast channel audio signal, exports to audio amplifier after treatment.
Five, the transmission of network computer control signal
Network computer and main frame hang on the same network, and network computer is transferred to main frame to control information and system's operation configuration information by procotol, and main frame is transferred to network computer to system running state.System's operation configuration information is kept on the main frame, and by each Event triggered in the system, main frame is judged operation; The control information of host machine part is judged execution by main frame; The control information of addressable terminal and addressable power amplifier is sent to each addressable terminal and addressable power amplifier by main frame through each serial connection branching repeater, and addressable terminal and addressable power amplifier are judged execution.
Six, the transmission of infrared remote-controlled signal
Infrared learning and each state of infrared remote control by the network computer main control system.The main frame infrared learning reads in the control device order of remote controller, is kept in the main frame, and main frame is carried out infrared remote control by this control command, with control source of sound input audio signal.
The utlity model has following advantage:
1, the user can insert multichannel external sound source equipment, the built-in source of sound of multichannel that direct using system main frame has, playing back music.
2, owing to adopt bus signal transmission, use the equipment employing unified interface of bus signals, and include the branching repeater that can carry out signal allocation and remote driving, so each parts of system can be arranged dispersion by actual conditions, can concentrate arrangement, but also scattered resettlement.
3, system adopts many architecture designs, and according to the installation environment and the customer demand of system, flexible configuration equipment has very strong adaptability and installability.
Above-described embodiment only is used to illustrate technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be all equal variation or modifications of doing according to the spirit that the utility model disclosed, still drop in the claim of the present utility model.
Claims (10)
1. the Public Address system of a numerical control network mode is characterized in that comprising:
Main frame, at least one control loader and at least one source of sound of being connected with described main frame, first branching repeater, described main frame is inserted in second branching repeater and the 3rd branching repeater serial connection back, be connected with calling station on described first branching repeater, be connected with the addressable power amplifier on described second branching repeater, be connected with the addressable terminal on described the 3rd branching repeater, be connected with calling station on each described addressable power amplifier, be connected with calling station or power amplifier on the described addressable terminal, described calling station is the addressable remote calling station that comprises input equipment, be connected with audio amplifier on the described power amplifier, described main frame is connected with described calling station, and described input equipment comprises extended keyboard.
2. the Public Address system of numerical control network mode according to claim 1 is characterized in that:
Also be serially connected with one or more addressable power amplifiers on the described addressable power amplifier.
3. the Public Address system of numerical control network mode according to claim 2 is characterized in that:
Also be serially connected with one or more addressable terminals on the described addressable terminal.
4. according to the Public Address system of the described numerical control network mode of arbitrary claim in the claim 1 to 3, it is characterized in that:
Described first branching repeater, second branching repeater and the 3rd branching repeater are the branching repeater of same type.
5. the Public Address system of numerical control network mode according to claim 4 is characterized in that:
Described first branching repeater, second branching repeater and the 3rd branching repeater have a plurality of and mutual serial connection back to insert described main frame respectively.
6. the Public Address system of numerical control network mode according to claim 5 is characterized in that:
Be connected with source of sound and microphone on the described addressable power amplifier.
7. according to the Public Address system of claim 5 or 6 described numerical control network modes, it is characterized in that:
Also be connected with the telephone-broadcast controller on the described main frame.
8. the Public Address system of numerical control network mode according to claim 7 is characterized in that:
Described main frame is connected by the RS485 bus with described control loader;
Described main frame is connected by the RS485 bus with described calling station;
Described main frame is connected by the RS485 bus with described telephone-broadcast controller.
9. the Public Address system of numerical control network mode according to claim 8 is characterized in that:
Also comprise the infrared control input controller that shakes that is connected with described main frame.
10. the Public Address system of numerical control network mode according to claim 9 is characterized in that:
Also be connected between the source of sound that described main frame reaches with described main frame is connected by shaking control RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201985811U CN201813373U (en) | 2010-05-18 | 2010-05-18 | Public broadcasting system adopting numerical control network mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201985811U CN201813373U (en) | 2010-05-18 | 2010-05-18 | Public broadcasting system adopting numerical control network mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813373U true CN201813373U (en) | 2011-04-27 |
Family
ID=43896309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201985811U Expired - Fee Related CN201813373U (en) | 2010-05-18 | 2010-05-18 | Public broadcasting system adopting numerical control network mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813373U (en) |
-
2010
- 2010-05-18 CN CN2010201985811U patent/CN201813373U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20140518 |