CN207218709U - Audio Matrix main frame and Public Address system - Google Patents

Audio Matrix main frame and Public Address system Download PDF

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Publication number
CN207218709U
CN207218709U CN201721015488.0U CN201721015488U CN207218709U CN 207218709 U CN207218709 U CN 207218709U CN 201721015488 U CN201721015488 U CN 201721015488U CN 207218709 U CN207218709 U CN 207218709U
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audio
cpu
audio signal
selector
input
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罗志锋
黄文裕
邝庭超
黄健恒
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Guangzhou Ddt Long Jian Electronics Co Ltd
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Guangzhou Ddt Long Jian Electronics Co Ltd
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Abstract

The utility model discloses Audio Matrix main frame and Public Address system, Audio Matrix main frame includes CPU and the digital audio media matrix, microphone controller, fire protection warning device, fire-fighting link device, trigger controller and the external source of sound that are connected respectively with CPU；CPU receive from microphone controller, fire protection warning device, external source of sound, trigger controller audio signal, and know the whereabouts of each road audio signal, Ji Ge roads audio signal to be distributed audio zone extremely；Each audio zone is directed to, comparing will distribute to the priority of each road audio signal of same audio zone, then control digital audio media matrix to distribute to the audio signal of the highest priority of same audio zone and be output to corresponding audio zone.The utility model Public Address system includes multiple Audio Matrix main frames, the CPU level connection of each Audio Matrix main frame.The utility model has the advantages of simple in construction, without carrying out complicated connection, saves installing space and use cost.

Description

Audio Matrix main frame and Public Address system
Technical field
A kind of broadcast system is the utility model is related to, more particularly to a kind of Audio Matrix main frame and Public Address system.
Background technology
With continuous progressive and science and technology the rapid development in epoch, the functional requirement of modern architecture and original building There is obvious difference, the high speed development of light current technology is particularly built, by electronic technology, mechanics of communication, network technology, calculating The state-of-the-art technology of the series such as machine technology, automatic control technology, sensor technology introduces, and the service function of building is carried significantly Height, comprehensive stronger, the field being related to is wider.A part of the public broadcasting as weak electricity system, be closely connected people The modern life, it can play music, and and can does service propaganda and paging is broadcasted, moreover it is possible to as the urgent wide of fire incident Broadcast, be a kind of extremely strong broadcast system of property agreed to, be widely used in cell, market, hotel, office cell, airport, harbour, station It is the modern life and indispensable part in work Deng place.
Broadcast product on the market is broadly divided into two major classes at present, and one kind is classified as analog broadcast system, another kind of for numeral Broadcast system is network IP broadcast, and traditional analog broadcasting product is forming multiple sound resource broadcasting, multiple functional broadcast system, institute The structural device product needed is excessively various, and the installing space requirement of system is larger, allows user to use invisible increase The demand of cost, applied in the composition of system due to needing multiple devices to cross machine connection, cause the audio transmission of system to resist Interference performance is poor, can not expand more broadcast audio areas.
Utility model content
Of the present utility model first the shortcomings that aiming to overcome that prior art and deficiency, there is provided a kind of Audio Matrix master Machine, the Audio Matrix main frame have the advantages of simple in construction, powerful, are forming multiple sound resource broadcasting, multiple functional broadcast During system, without carrying out complicated connection, installing space and use cost are saved.
Second purpose of the present utility model is to provide a kind of Public Address system being made up of above-mentioned Audio Matrix main frame, The Public Address system can be expanded into more broadcast audio areas, and have the advantages of strong antijamming capability.
The first object of the present invention is achieved through the following technical solutions：A kind of Audio Matrix main frame, including CPU, digital sound Frequency mediamatrix, microphone controller, fire protection warning device, fire-fighting link device and trigger controller；
The microphone controller is provided with multiple microphone audio input ports, and the microphone controller connects CPU, by microphone The audio signal of controller audio input port input is sent to CPU；
The fire protection warning device connection is stored with the first storage card of the audio signal of fire alarm；The fire protection warning device connection CPU, control fire protection warning device to read audio signal from the first storage card by CPU, and the audio signal of reading is transmitted To CPU；
The fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU, will The fire alarm trigger signal received is sent to CPU, and CPU controls fire protection warning device from first when receiving fire alarm trigger signal The audio signal of fire alarm is read in storage card；
The trigger controller connect band does the external timer source of sound of triggering, and the trigger controller connects CPU, CPU by trigger controller receive external timer source of sound do trigger signal after, received by trigger controller external The audio signal that timer source of sound is sent；
The CPU is provided with multiple external audio input ports, connects external source of sound by external audio input port, connects Receive the audio signal that external source of sound is sent；
The CPU connections digital audio media matrix, digital audio media matrix is controlled by corresponding audio signal by CPU Distribute to corresponding audio zone.
Preferably, the trigger controller connects external fire alarm source of sound, and CPU is receiving the fire alarm of fire-fighting link device transmission During trigger signal, the audio signal of external fire alarm source of sound transmission is got by trigger controller, while passes through trigger controller Fire alarm trigger signal is sent to outside.
Further, the trigger controller includes main circuit, the first power amplifier and the second power amplifier；
The main circuit includes the first photo-coupler, the second photo-coupler, the first relay and the second relay；First after Electrical equipment includes two groups of contacts, and respectively first group of contact and the second composition contact, the coil anode of the first relay pass through one Backward dioded D600 connection coil negative terminals, the coil anode connection dc source 24V of the first relay, the line of the first relay Enclose the colelctor electrode that negative terminal connects the first NPN triode, the IO ends that the base stage of the first NPN triode passes through resistance R612 connections CPU Mouthful, the base stage of the first NPN triode after being sequentially connected resistance R612 and resistance R614 by being grounded, the hair of the first NPN triode Emitter grounding；First first group of relay contact is made up of the first normally closed stationary contact, the first normally opened stationary contact and the first movable contact, First second group of relay contact is made up of the second normally closed stationary contact, the second normally opened stationary contact and the second movable contact, wherein first Movable contact and the second movable contact are all connected with one end of external timer source of sound trigger signal output, the first normally opened stationary contact and second Normally opened stationary contact is all connected with the other end of external timer source of sound trigger signal output, the first normally opened stationary contact and second normally opened quiet Contact is grounded by resistance R622；Connect after first movable contact and the second movable contact series opposing diode D603 and resistance R624 The first input port of the first photo-coupler is connect, dc source+5V passes through the second of diode D601 the first photo-couplers of connection Input port；One is connected between the first input port of first photo-coupler and the second input port of the first photo-coupler Backward dioded D602, the output port of the first photo-coupler is by resistance R615 connection dc source+3.3V, while the first light The output port connection CPU of coupler I/O port；The wherein first input port of the first photo-coupler and the first photo-coupler The second input port correspond to anode and the negative electrode both ends in the first photo-coupler internal illumination source respectively；Second relay includes Two groups of contacts, respectively the 3rd group of contact and the 4th composition contact, the coil anode of the second relay pass through reverse two pole Pipe D606 connection coil negative terminals, the coil anode connection dc source 24V of the second relay, the coil negative terminal of the second relay connect Connecing the colelctor electrode of the second NPN triode, the base stage of the second NPN triode is by resistance R613 connections CPU I/O port, and second By being grounded after being sequentially connected resistance R613 and resistance R617, the emitter stage of the second NPN triode connects the base stage of NPN triode Ground；The 3rd group of contact of second relay is made up of the 3rd normally closed stationary contact, the 3rd normally opened stationary contact and the 3rd movable contact, second after The 4th group of contact of electrical equipment is made up of the 4th normally closed stationary contact, the 4th normally opened stationary contact and the 4th movable contact, wherein the 3rd movable contact One end of external equipment fire alarm trigger signal input, the 3rd normally opened stationary contact and the 4th normally opened stationary contact are all connected with the 4th movable contact Point is all connected with the other end of external equipment fire alarm trigger signal input, and the 3rd normally opened stationary contact and the 4th normally opened stationary contact pass through electricity Hinder R623 ground connection；The second optical coupling is connected after 3rd movable contact and the 4th movable contact series opposing diode D605 and resistance R625 The first input port of device, the second input port that dc source+5V passes through diode D601 the second photo-couplers of connection；Second A backward dioded is connected between the first input port of photo-coupler and the second input port of the second photo-coupler D604, the output port of the second photo-coupler is by resistance R616 connection dc source+3.3V, while the second photo-coupler is defeated Exit port connects CPU I/O port；Wherein the second input of the first input port of the second photo-coupler and the second photo-coupler Port corresponds to anode and the negative electrode both ends in the second photo-coupler internal illumination source respectively；
First power amplifier includes the first operational amplifier U600A, the second operational amplifier U600B and first Potentiometer, wherein the first potentiometer is slide rheostat；First operational amplifier U600 inverting input is by being sequentially connected in series The audio signal output negative terminal of external timer source of sound, wherein electrochemical capacitor are connected after resistance R601 and electrochemical capacitor E600 E600 positive pole connects the audio output negative terminal of external timer source of sound, and the first operational amplifier U600A normal phase input end passes through It is sequentially connected in series the audio input anode that external timer source of sound is connected after resistance R601 and electric capacity E600, wherein electrochemical capacitor E601 negative pole connects the audio output anode of external timer source of sound；One end connection that resistance R601 connects with electrochemical capacitor E600 It is grounded after resistance R608 and polarity free capacitor C601 in parallel, one end connection that resistance R602 connects with electrochemical capacitor E601 is in parallel Resistance R609 and polarity free capacitor C603 after be grounded, the first operational amplifier U600A normal phase input end connection electricity in parallel It is grounded after resistance R603 and polarity free capacitor C604；The resistance of first operational amplifier U600A inverting input connection parallel connection The first operational amplifier U600A output end is connected after R600 and polarity free capacitor C600；First operational amplifier U600A's is defeated Go out one end of the first potentiometer of end connection, the other end ground connection of the first potentiometer, the sliding end of the first potentiometer connects series connection The second operational amplifier U600B inverting input, the second operational amplifier are connected after electrochemical capacitor E604 and resistance R618 U600B positive input end grounding, the second operational amplifier U600B inverting input connection resistance R620 in parallel and electrodeless Property electric capacity C621 after connect the second operational amplifier U600B output end, the second operational amplifier U600B output end connection CPU I/O port, the audio signal of external timer source of sound output are inputted into CPU after the first power amplifier, wherein The multiplication factor of the first power amplifier can be adjusted by the first potentiometer；
Second power amplifier includes the 3rd operational amplifier U601A, four-operational amplifier U601B and the second current potential Device, wherein the second potentiometer is slide rheostat；3rd operational amplifier U600 inverting input is by being sequentially connected in series resistance The audio signal of connection and external fire alarm source of sound output negative terminal after R605 and electrochemical capacitor E602, wherein electrochemical capacitor E602 is just Pole connects the audio output negative terminal with external fire alarm source of sound, and the 3rd operational amplifier U601B normal phase input end is by being sequentially connected in series The negative pole of the audio input anode, wherein electrochemical capacitor E603 of external fire alarm source of sound is connected after resistance R606 and electrochemical capacitor E603 Connect the audio output anode of external fire alarm source of sound；The resistance for one end connection parallel connection that resistance R605 connects with electrochemical capacitor E602 Be grounded after R610 and polarity free capacitor C606, one end that resistance R606 connects with electric capacity E603 connection resistance R611 in parallel and It is grounded after polarity free capacitor C608, the 3rd operational amplifier U601B normal phase input end connection resistance R607 in parallel and electrodeless It is grounded after property electric capacity C609；3rd operational amplifier U601A inverting input connection resistance R604 in parallel and nonpolarity electricity The 3rd operational amplifier U601A output end is connected after appearance C605；The 3rd operational amplifier U601A electricity of output end connection second Position device one end, the second potentiometer the other end ground connection, the second potentiometer sliding end connection series connection electrochemical capacitor E605 and Four-operational amplifier U601B inverting input, four-operational amplifier U601B normal phase input end are connected after resistance R619 It is grounded, is connected after the resistance R621 and polarity free capacitor C622 of four-operational amplifier U601B inverting input connection parallel connection Four-operational amplifier U601B output end, four-operational amplifier 601B output end connection CPU I/O port, external fire The audio signal of alert source of sound output is inputted into CPU after the second power amplifier, wherein can be adjusted by the second potentiometer Save the multiplication factor of the second power amplifier.
Preferably, the CPU is connected with cuts controller by force, needs to stop fortune when fire alarm occurs by cutting controller by force and connecting Capable equipment, when CPU receives the fire alarm trigger signal of fire-fighting link device transmission, send a control signal to and cut controller by force, Need equipment out of service out of service when controlling fire alarm to occur by cutting controller by force；
The CPU is connected with the first touch-screen.
Preferably, the microphone controller connects each microphone work station by each microphone audio input port thereon；
The microphone work station includes microphone, the first controller, the first digital control audio processing chip and second and touched Touch screen, the audio signal output end of the microphone connects the input of the first digital control audio processing chip, and described first The microphone audio input port of the output end connection microphone controller of digital control audio processing chip；Described first is digital control Audio processing chip connect the first controller, by the first controller for the first digital control audio processing chip gain and Audio is adjusted；First controller connects CPU, and second touch-screen connects the first controller.
Preferably, in addition to remote controllers, the remote controllers are provided with multiple remote audio signal input ports With multiple remote audio signal output ports；The remote controllers are connected by each remote audio signal input port thereon Each remote control panel of each audio zone is arranged on, for receiving the audio signal of remote control panel transmission；The long-range control Device processed connects CPU, the audio for receiving it from each remote control panel by each remote audio signal output port thereon Signal sends CPU to；In the remote controllers, a remote audio signal is shared per several remote audio signal input ports Output port, wherein each remote audio signal input port that connection belongs to same audio zone remote control panel shares one far Journey Audio output port, i.e., the remote control panel of same audio zone, which is sent to the audio signal of remote controllers, to be passed through Same remote audio signal output port in remote controllers is output in CPU, and CPU receives remote controllers transmission After audio signal, send to digital audio media matrix, then according to the two priority classes digital audio media of the audio signal The corresponding audio signal of Output matrix is to each audio zone；
Each remote control panel include second controller, local audio source, the second digital control audio processing chip and 3rd touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；
The second controller connects local audio source, for the audio signal for selecting local audio source to export；Described The input connection local audio source of two digital control audio processing chips, output end connect remote controllers by signal wire One of remote audio signal input port；The second controller connects the second digital control audio processing chip, is used for Second digital control audio processing chip gain and the regulation of audio.
Preferably, the digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 audio letter Number input input microphone controller is sent to CPU 8 tunnel audio signals, the 9th to 16 audio signal input end input 8 it is outer Put source of sound to send to CPU 8 tunnel audio signals, the 17th audio signal input end input fire protection warning device is sent to CPU sound Frequency signal, the 18th audio signal input end input trigger controller send being received from external timer source of sound to CPU Audio signal, the 19th audio signal input end input trigger controller send being received from external fire alarm source of sound to CPU Audio signal；20th audio signal input end input is read to CPU audio signal from the second storage card or outside USB flash disk；The The audio signal of 21 to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
The digital audio media matrix includes first selector, second selector and third selector, and described first Selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that No. 8 selectors are selected on 28 tunnels, and the third selector is 36 tunnels Select No. 1 selector；
1st to 20 audio signal input end of the digital audio media matrix passes through each 3rd digital control sound respectively Frequency process chip connects 20 inputs of first selector；The corresponding choosing of connection second of 20 output ends of the first selector Wherein 20 inputs of device are selected, the corresponding input of wherein 8 inputs of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；It is described Wherein 20 inputs of third selector correspondingly connect 20 output ends of first selector, wherein 8 of third selector The corresponding input of input is inputted to CPU 8 tunnel audio signals, wherein 8 inputs point of third selector by remote controllers The output end of 8 the 4th digital control audio processing chips Dui Ying not be connected, the output end of third selector passes through digital power Amplifier connects local loudspeaker, and monitor function is realized by local loudspeaker；
The first selector, second selector and third selector address end connect CPU respectively, and CPU is according to the first choosing Select the priority of device, second selector and each input audio signal of third selector, control first selector, second selector and Third selector output end exports corresponding audio signal；
On each 3rd digital control audio processing chip and each 4th digital control audio processing chip is all connected with CPU, leads to Cross the gain on each 3rd digital control audio processing chip of CPU regulations with each 4th digital control audio processing chip and sound Effect.
The second object of the present invention is achieved through the following technical solutions：A kind of Public Address system, including multiple above-mentioned sounds Frequency matrix host computer, the CPU in each Audio Matrix main frame is cascade connection, and wherein first order CPU positions host CPU, other CPU at different levels are From CPU；The host CPU sends the corresponding each road audio signal received respectively to after each road audio signal is received step by step It is individual from CPU；Now each CPU knows the whereabouts of received each road audio signal from host CPU, and Ji Ge roads audio signal is wanted The audio zone of distribution extremely；Each audio zone of Audio Matrix main frame where being directed to each CPU, comparing will distribute to same audio zone The priority of each road audio signal, digital audio media matrix is then controlled to distribute to the highest priority of same audio zone Audio signal is output to corresponding audio zone.
Preferably, including the Audio Matrix main frame any one of 32 Claims 1-4, i.e. 32 Audio Matrixs 32 CPU corresponding in main frame are cascade connection；Wherein each Audio Matrix main frame includes 8 audio zones.
Preferably, in each Audio Matrix main frame, digital audio media matrix includes 28 audio signal input ends, its In, the 1st to 8 audio signal input end input microphone controller is sent to CPU 8 tunnel audio signals, the 9th to 16 audio letter Number input, which inputs 8 external sources of sound and sent to CPU 8 tunnel audio signals, the 17th audio signal input end, inputs fire-fighting report Alert device is sent to CPU audio signal, and the 18th audio signal input end input trigger controller is sent to CPU from external fixed When the audio signal that receives of device source of sound, the 19th audio signal input end input trigger controller sent to CPU from external The audio signal that fire alarm source of sound receives；The input of 20th audio signal input end from the second storage card or outside USB flash disk read to CPU audio signal；21st to 28 audio signal input end input remote controllers, 8 remote audio signal output end outputs Audio signal；
In each Audio Matrix main frame, digital audio media matrix includes first selector, second selector, the 3rd selection Device and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that 28 tunnels select 8 tunnels to select Device, the third selector are that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, the 1st to 20 of the digital audio media matrix Audio signal input end connects wherein 20 inputs of first selector by each 3rd digital control audio processing chip respectively End；20 output ends of the first selector correspondingly connect wherein 20 inputs of second selector；When CPU therein is From CPU when, the 1st to 20 audio signal input end of the digital audio media matrix is digital control by each 3rd respectively Audio processing chip connects wherein 20 inputs of first selector；Another 20 inputs input upper level of first selector CPU is sent to this grade of CPU 20 tunnel audio signals, and 20 output ends of first selector correspondingly connect its of second selector In 20 inputs；
In each Audio Matrix, the corresponding input of wherein 8 inputs of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；It is described Wherein 20 inputs of third selector correspondingly connect 20 output ends of first selector, wherein 8 of third selector The corresponding input of input is inputted to CPU 8 tunnel audio signals, wherein 8 inputs point of third selector by remote controllers The output end of 8 the 4th digital control audio processing chips Dui Ying not be connected, the output end of third selector passes through digital power Amplifier connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU respectively, CPU controls first choice according to the priority of first selector, second selector and each input audio signal of third selector Device, second selector and third selector output end export corresponding audio signal；
In each Audio Matrix, on each 3rd digital control audio processing chip and each 4th digital control audio processing chip CPU is all connected with, is adjusted by CPU on each 3rd digital control audio processing chip and each 4th digital control audio frequency process core The gain of piece and audio.
The utility model is had the following advantages relative to prior art and effect：
(1) the utility model Audio Matrix main frame includes CPU, digital audio media matrix, microphone controller, fire protection warning Device, fire-fighting link device and trigger controller；Wherein CPU by microphone controller receive the audio signal from microphone work station, Being received on the audio signal of fire alarm, by trigger controller from external fixed from storage card is received by fire protection warning device When device source of sound audio signal, CPU after each road audio signal is received, by control digital audio media matrix will distribute extremely The audio signal of the highest priority of same audio zone is output to corresponding audio zone.The utility model Audio Matrix main frame by CPU, Digital audio media matrix, microphone controller, fire protection warning device, fire-fighting link device and trigger controller are integrated in one, in base In the transmission that audio signal and control signal are carried out in the mode of bus, there is the advantages of simple in construction and powerful； When forming multiple sound resource broadcasting, multiple functional broadcast system, without carrying out complicated connection, installing space and use are saved Cost.
(2) the microphone work station that microphone controller connects in the utility model Audio Matrix main frame includes microphone, first Controller, the first digital control audio processing chip and the second touch-screen, the first digital control audio processing chip can be passed through The regulation of volume and audio is carried out for the audio signal of microphone work station output, while can also be directed to by the first controller The audio zone that microphone work station exports audio signal is distributed is configured, in addition, microphone work station can also send master volume Regulate signal and keynote imitate Regulate signal to CPU, to trigger CPU to exporting to the volume and sound of the audio signal in respective audio area Effect is adjusted.It can be seen that user can carry out volume, audio and distributed audio according to the actual requirements in microphone work station The random adjustment in area, improve the flexibility ratio that the utility model Audio Matrix main frame uses.The regulation of other volume and audio with And audio zone selection can be realized directly by the operation of the second touch-screen, the use of very convenient user.
(3) CPU is connected with remote controllers in the utility model Audio Matrix main frame, is connected by remote controllers each The remote control panel of audio zone, the utility model remote control panel include second controller, local audio source, the second numeral Audio processing chip and the 3rd touch-screen are controlled, the utility model can be by the second digital control audio processing chip for remote The audio signal of process control panel local audio source output carries out the regulation of volume and audio；The utility model can be by long-range Controller second controller sends master volume Regulate signal and keynote imitates Regulate signal to CPU, to trigger CPU to exporting to corresponding The volume and audio of the audio signal of audio zone are adjusted.The utility model can also select this by second controller simultaneously The audio signal of ground audio-source output so that user can according to where selecting in remote control panel the hobby of oneself audio zone Play corresponding music.The utility model can also select audio zone where it to broadcast by the second controller of remote control panel Audio signal which external source of sound come from.It can be seen that the utility model can realize audio where it by remote control panel The remote control of area's audio signal.Use to user brings great convenience.And aforesaid operations can be by long-range The 3rd touch-screen that second controller connects in control panel is realized.
(4) in the utility model Audio Matrix main frame, CPU is connected with external fire alarm source of sound by trigger controller, works as CPU When receiving the fire alarm trigger signal of fire-fighting link device transmission, the related audio of fire alarm can be got by fire protection warning device Signal, the audio signal for the fire alarm correlation that external fire alarm source of sound is sent, therefore this reality can also be got by trigger controller Allow users to play corresponding fire alarm audio signal according to demand with new.The utility model can also be controlled by triggering Device sends fire alarm trigger signal to external equipment, has further expanded the use function of the utility model Audio Matrix main frame.Separately Outside, in the utility model Audio Matrix main frame, CPU is connected with cuts controller by force, when CPU receives the fire of fire-fighting link device transmission Alert trigger signal, it is out of service by cutting controller relevant device by force, it ensure that security against fire.
(5) in the utility model Audio Matrix main frame, CPU is connected with the first touch-screen, and user can touch by first Screen realization interacts with CPU's, realizes the control to Audio Matrix main frame.
(6) the utility model Public Address system is made up of multiple Audio Matrix main frames in the utility model, wherein respectively The CPU of Audio Matrix main frame is cascade connection, and host CPU passes each road audio signal after each road audio signal is received step by step Deliver to respectively from CPU, and the respectively whereabouts from CPU by getting each road audio signal at host CPU.It is directed to where each CPU Each audio zone of Audio Matrix main frame, comparing will distribute to the priority of each road audio signal of same audio zone；Then each CPU Control the digital audio media matrix that it is connected to distribute to the audio signal of the highest priority of same audio zone to be output to Corresponding audio zone.Therefore the utility model Public Address system can by way of the CPU level connection in each Audio Matrix main frame Extended audio area, only in each CPU when cascade, annexation occurs without other equipment, therefore can quickly assemble Public Address system is got, there is the advantages of simple in construction, strong antijamming capability.32 sounds are being cascaded in the utility model In the case of the CPU of frequency matrix host computer, the lossless transmission of audio signal can be realized, therefore audio zone can extend to 256 It is individual, it disclosure satisfy that the use in large-scale place.
(7) in the utility model Public Address system, respectively the audio signal from CPU, control signal etc. are both from master CPU, controlled by host CPU, therefore only pass through the corresponding operating to host CPU in the utility model, you can realize all audio zones The control of audio signal, such as export to the volume of the audio signal of each audio zone and audio regulation, and the sound of each audio zone The controls such as source selection.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model Audio Matrix main frame.
Fig. 2 a are the circuit theory diagrams of trigger controller main circuit in the utility model Audio Matrix main frame.
Fig. 2 b are the circuit theory diagrams of the power amplifier of trigger controller first in the utility model Audio Matrix main frame.
Fig. 2 c are the circuit theory diagrams of the power amplifier of trigger controller second in the utility model Audio Matrix main frame.
Fig. 3 is the circuit theory diagrams of digital audio media matrix in the utility model Audio Matrix main frame.
Fig. 4 is schematic diagram when audio zone sequence number button is arranged in the second touch-screen of the utility model microphone work station.
Fig. 5 is when the source of sound sequence number button of external source of sound is arranged in the 3rd touch-screen of the utility model remote control panel Schematic diagram.
When Fig. 6 is that the first touch-screen that the utility model Audio Matrix host CPU is connected sets 16 source of sound buttons Schematic diagram.
Fig. 7 is the structural representation of each CPU level connection in the utility model Public Address system.
Fig. 8 is digital audio media matrix in the Audio Matrix main frame where the CPU in the utility model Public Address system Circuit theory diagrams.
Embodiment
The utility model is described in further detail with reference to embodiment and accompanying drawing, but implementation of the present utility model Mode not limited to this.
Embodiment
Present embodiment discloses a kind of Audio Matrix main frame, as shown in figure 1, including CPU, digital audio media matrix, words Cylinder controller, fire protection warning device, fire-fighting link device, remote controllers, trigger controller and controller is cut by force；
In the present embodiment, microphone controller is provided with multiple microphone audio input ports, and microphone controller connection CPU will The audio signal of microphone controller audio input port input is sent to CPU；Microphone controller can use in the present embodiment The microprocessors such as single-chip microcomputer.
In the present embodiment, the connection of fire protection warning device is stored with the first storage card of the audio signal of fire alarm；The fire-fighting report Alert device connection CPU, fire protection warning device is controlled to read audio signal from the first storage card by CPU, and by the audio of reading Signal is sent to CPU；Fire protection warning device can use the microprocessors such as single-chip microcomputer in the present embodiment.
In the present embodiment, fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU is met, the fire alarm trigger signal received is sent to CPU, CPU controls fire protection warning when receiving fire alarm trigger signal Device reads the audio signal of fire alarm from the first storage card；Wherein each fire alarm trigger signal input port of fire-fighting link device can be with Connection is in each local fire-fighting link switch, and when fire-fighting link switch is pressed, fire-fighting link device can receive fire alarm and touch Signal.
In the present embodiment, trigger controller connect band does the external timer source of sound of triggering and external fire alarm source of sound, touches Send out controller connection CPU, CPU by trigger controller receive external timer source of sound do trigger signal after, by touch Send out controller and receive the audio signal that external timer source of sound is sent；CPU is receiving the fire alarm triggering of fire-fighting link device transmission During signal, the audio signal of external fire alarm source of sound transmission is got by trigger controller, at the same it is outside by trigger controller Portion sends fire alarm trigger signal；
Trigger controller includes main circuit, the first power amplifier and the second power amplifier in the present embodiment；
As shown in Figure 2 a, main circuit includes the first photo-coupler IS600, the second photo-coupler IS601, the first relay K600C and the second relay K601C；Photo-coupler IS600, the second photo-coupler IS601 model in the present embodiment EL357.First relay includes two groups of contacts, respectively first group of contact and the second composition contact, the coil of the first relay Anode connects dc source 24V by a backward dioded D600 connection coil negative terminal, the coil anode of the first relay, the The coil negative terminal of one relay connects the first NPN triode Q600 colelctor electrode, and the first NPN triode Q600 base stage passes through electricity R612 connections CPU I/O port is hindered, the first NPN triode Q600 base stage is by being sequentially connected resistance R612 and resistance R614 After be grounded, the first NPN triode Q600 grounded emitter；First first group of relay contact is by the first normally closed stationary contact, One normally opened stationary contact and the first movable contact composition, the first second group of relay contact is by the second normally closed stationary contact, second normally opened quiet Contact and the second movable contact composition, wherein to be all connected with external timer source of sound trigger signal defeated for the first movable contact and the second movable contact The one end gone out, the first normally opened stationary contact and the second normally opened stationary contact are all connected with the another of external timer source of sound trigger signal output End, the first normally opened stationary contact and the second normally opened stationary contact are grounded by resistance R622.First movable contact and the series connection of the second movable contact The first input port of the first photo-coupler is connected after backward dioded D603 and resistance R624, dc source+5V passes through two poles Second input port of pipe D601 the first photo-couplers of connection；The first input port of first photo-coupler and the first photo-coupler The second input port between be connected with a backward dioded D602, the output port of the first photo-coupler passes through resistance R615 Connect dc source+3.3V, while the output port connection CPU of the first photo-coupler I/O port；Wherein the first photo-coupler First input port and the second input port of the first photo-coupler correspond to the first photo-coupler internal illumination source respectively Anode and negative electrode both ends；Second relay includes two groups of contacts, respectively the 3rd group of contact and the 4th composition contact, the second relay The coil anode of device passes through a backward dioded D606 connection coil negative terminal, the coil anode connection direct current of the second relay Power supply 24V, the coil negative terminal of the second relay connect the second NPN triode Q601 colelctor electrode, the second NPN triode Q601's Base stage by resistance R613 connections CPU I/O port, the second NPN triode Q601 base stage by be sequentially connected resistance R613 and It is grounded after resistance R617, the second NPN triode Q601 grounded emitter；The 3rd group of contact of second relay is normally closed by the 3rd Stationary contact, the 3rd normally opened stationary contact and the 3rd movable contact composition, the 4th group of contact of the second relay is by the 4th normally closed stationary contact, the Four normally opened stationary contacts and the 4th movable contact composition, wherein the 3rd movable contact and the 4th movable contact are all connected with external equipment fire alarm triggering One end of signal input, the 3rd normally opened stationary contact and the 4th normally opened stationary contact are all connected with the input of external equipment fire alarm trigger signal The other end, the 3rd normally opened stationary contact and the 4th normally opened stationary contact are grounded by resistance R623.3rd movable contact and the 4th movable contact The first input port of the second photo-coupler is connected after series opposing diode D605 and resistance R625, dc source+5V passes through Second input port of diode D601 the second photo-couplers of connection；The first input port of second photo-coupler and the second optocoupler A backward dioded D604 is connected between second input port of clutch, the output port of the second photo-coupler passes through electricity Hinder R616 connection dc source+3.3V, while the output port connection CPU of the second photo-coupler I/O port；Wherein the second light Second input port of the first input port of coupler and the second photo-coupler corresponds to send out inside the second photo-coupler respectively The anode of light source and negative electrode both ends.As shown in Figure 2 b, the first power amplifier includes the first operational amplifier U600A, the second fortune Amplifier U600B and the first potentiometer are calculated, wherein the first potentiometer is slide rheostat；First operational amplifier U600's is anti- Phase input connects the audio signal output of external timer source of sound by being sequentially connected in series after resistance R601 and electrochemical capacitor E600 Negative terminal, wherein electrochemical capacitor E600 positive pole meet the audio output negative terminal of external timer source of sound, the first operational amplifier U600A Normal phase input end the audio input anode of external timer source of sound is connected after resistance R601 and electric capacity E600 by being sequentially connected in series, Wherein electrochemical capacitor E601 negative pole connects the audio output anode of external timer source of sound.Resistance R601 and electrochemical capacitor E600 connects It is grounded after the resistance R608 and polarity free capacitor C601 of one end connection parallel connection connect, resistance R602 connects with electrochemical capacitor E601 The in parallel resistance R609 and polarity free capacitor C603 of one end connection after be grounded, the first operational amplifier U600A positive input It is grounded after end connection resistance R603 and polarity free capacitor C604 in parallel.First operational amplifier U600A inverting input connects The first operational amplifier U600A output end is connected after meeting the resistance R600 and polarity free capacitor C600 of parallel connection.First computing is put Big device U600A output end connects one end of the first potentiometer, the other end ground connection of the first potentiometer, the slip of the first potentiometer Connect the second operational amplifier U600B inverting input after the electrochemical capacitor E604 and resistance R618 of end connection series connection, second Operational amplifier U600B positive input end grounding, the resistance of the second operational amplifier U600B inverting input connection parallel connection The second operational amplifier U600B output end is connected after R620 and polarity free capacitor C621, the second operational amplifier U600B's is defeated Go out end connection CPU I/O port, the audio signal of external timer source of sound output is inputted to CPU after the first power amplifier In, wherein the multiplication factor of the first power amplifier can be adjusted by the first potentiometer.
As shown in Figure 2 c, the second power amplifier includes the 3rd operational amplifier U601A, four-operational amplifier U601B And second potentiometer, wherein the second potentiometer is slide rheostat；3rd operational amplifier U600 inverting input passes through The audio signal of connection and external fire alarm source of sound exports negative terminal after being sequentially connected in series resistance R605 and electrochemical capacitor E602, wherein being electrolysed Electric capacity E602 positive pole connects the audio output negative terminal with external fire alarm source of sound, the 3rd operational amplifier U601B normal phase input end The audio input anode of external fire alarm source of sound is connected after resistance R606 and electrochemical capacitor E603 by being sequentially connected in series, wherein electrolysis electricity The negative pole for holding E603 connects the audio output anode of external fire alarm source of sound.One end connection that resistance R605 connects with electrochemical capacitor E602 It is grounded after resistance R610 and polarity free capacitor C606 in parallel, one end connection parallel connection that resistance R606 connects with electric capacity E603 It is grounded after resistance R611 and polarity free capacitor C608, the resistance of the 3rd operational amplifier U601B normal phase input end connection parallel connection It is grounded after R607 and polarity free capacitor C609.The resistance R604 of 3rd operational amplifier U601A inverting input connection parallel connection With the output end that the 3rd operational amplifier U601A is connected after polarity free capacitor C605.3rd operational amplifier U601A output end Connect one end of the second potentiometer, the other end ground connection of the second potentiometer, the electrolysis of the sliding end connection series connection of the second potentiometer Four-operational amplifier U601B inverting input is connected after electric capacity E605 and resistance R619, four-operational amplifier U601B's Positive input end grounding, the resistance R621 and polarity free capacitor of four-operational amplifier U601B inverting input connection parallel connection Four-operational amplifier U601B output end, four-operational amplifier 601B output end connection CPU IO are connected after C622 Port, the audio signal of external fire alarm source of sound output are inputted into CPU after the second power amplifier, wherein can be by the Two potentiometers adjust the multiplication factor of the second power amplifier.
Trigger controller receives the timing pip of external timing source of sound transmission by main circuit in the present embodiment, passes through First power amplifier receives the audio signal that external timing source of sound is sent, and sends to CPU.CPU passes through in the present embodiment The main circuit of trigger controller sends fire alarm trigger signal, and the sound of external fire alarm source of sound transmission is received by the second power amplifier Frequency signal, and send to CPU.
In the present embodiment, CPU is connected with cuts controller by force, needs to stop fortune when fire alarm occurs by cutting controller by force and connecting Capable equipment, when CPU receives the fire alarm trigger signal of fire-fighting link device transmission, send a control signal to and cut controller by force, Need equipment out of service out of service when controlling fire alarm to occur by cutting controller by force.Cut controller by force in the present embodiment For can be with relay.
In the present embodiment, CPU is provided with multiple external audio input ports, is connected by external audio input port external Source of sound, receive the audio signal that external source of sound is sent；Wherein external source of sound can be CD, MP3, radio, computer etc..In this reality Apply in example, CPU is provided with multiple external audio input ports, can connect 8 external sources of sound, wherein external source of sound can provide The audio signals such as background music.
In the present embodiment, remote controllers are provided with multiple remote audio signal input ports and multiple remote audios letter Number output port；Remote controllers are arranged on each remote of each audio zone by each remote audio signal input port connection thereon Process control panel, for receiving the audio signal of remote control panel transmission；The remote controllers connect CPU, by thereon Each remote audio signal output port audio signal for receiving it from each remote control panel send CPU to；Long-range control In device processed, a remote audio signal output port is shared per several remote audio signal input ports, wherein connection belongs to same Each remote audio signal input port of one audio zone remote control panel shares a remote audio signal output port, i.e., same The remote control panel of one audio zone sends the audio signal to remote controllers by same remote in remote controllers Journey Audio output port is output in CPU, after CPU receives the audio signal of remote controllers transmission, is sent to numeral Audio frequency media matrix.
In the present embodiment, CPU is connected with the second storage card or outside USB flash disk.
In the present embodiment, CPU connection digital audio media matrixes, each audio signal output end of digital audio media matrix The power amplifier of each audio zone loudspeaker front end, the audio letter of digital audio media Output matrix to each audio zone are connected respectively Number played out after power amplifier enhanced processing by loudspeaker.Digital audio media square is controlled by CPU in the present embodiment Battle array distributes corresponding audio signal to corresponding audio zone, and CPU is being received from microphone controller, fire protection warning device, outer After the audio signal for putting source of sound, trigger controller, remote controllers, the second storage, outside USB flash disk, each road audio signal is known Whereabouts, Ji Ge roads audio signal to be distributed audio zone extremely；Each audio zone is directed to simultaneously, comparing will distribute to same audio The priority of each road audio signal in area, then control digital audio media matrix by distribute to same audio zone priority most High audio signal is output to corresponding audio zone.
In the present embodiment, CPU port is connected with the first touch-screen, and first touch-screen is 7 cun of capacitance touch color screens. In the present embodiment, operating personnel can send associated control signal by the operation of the first touch-screen to trigger the first controller Signal sets relevant parameter.For example, digital audio media matrix can be directed to output by the operation of the first touch-screen Volume and audio to the audio signal of each audio zone loudspeaker are adjusted；It can be set by the operation of the first touch-screen CPU to be received the source of audio signal；CPU is set to receive certain road or a few road audio signals.
In the present embodiment, above-mentioned microphone controller connects each microphone by each microphone audio input port thereon and worked Stand；Microphone work station includes microphone, the first controller, the first digital control audio processing chip and second in the present embodiment Touch-screen, the audio signal output end of the microphone connect the input of the first digital control audio processing chip, and described the The microphone audio input port of the output end connection microphone controller of one digital control audio processing chip；The first numeral control Audio processing chip processed connects the first controller, and the gain of the first digital control audio processing chip is directed to by the first controller It is adjusted with audio；First controller connects CPU, and second touch-screen connects the first controller.In the present embodiment In the first digital control audio processing chip that can be connected by the operation on the second touch-screen for the first controller Gain and audio be adjusted, so as to realize the tune of the volume of microphone work station microphone institute exports audio signal and audio Section.In the present embodiment, the whereabouts of microphone work station exports audio signal can be selected by the operation of the second touch-screen, i.e., The audio zone of distribution extremely.
In this implementation, above-mentioned each remote control panel includes second controller, local audio source, the second digital control sound Frequency process chip and the 3rd touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；The Two controllers connect local audio source, for the audio signal for selecting local audio source to export；The second digital control audio The input connection local audio source of process chip, output end connect one of them long-range sound of remote controllers by signal wire Frequency signal input port；The second controller connects the second digital control audio processing chip, for the second digital control sound The gain of frequency process chip and the regulation of audio.In the present embodiment can be by the operation on the 3rd touch-screen for the second control The gain for the second digital control audio processing chip that device processed is connected and audio are adjusted, so as to realize remote control panel The volume for the audio signal that local audio source is exported and the regulation of audio.
In the present embodiment, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 audio Signal input part input microphone controller sends to CPU 8 tunnel audio signals, the 9th to 16 audio signal input end and inputs 8 External source of sound sends to CPU 8 tunnel audio signals, the 17th audio signal input end input fire protection warning device and sent to CPU's Audio signal, the 18th audio signal input end input trigger controller send to CPU from external timer source of sound and received Audio signal, the 19th audio signal input end input trigger controller, which is sent to CPU from external fire alarm source of sound, to be received Audio signal；20th audio signal input end input is read to CPU audio signal from the second storage card or outside USB flash disk； The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers, i.e., Carry out 8 tunnel audio signals of the corresponding input of the 21st to 28 audio signal input end, correspond to the long-range control from 8 audio zones respectively Panel local audio source processed, 1 road signal of the corresponding input of the 21st audio signal input end are long-range from first audio zone Control panel local audio source, by that analogy, 1 road signal of the corresponding input of the 28th audio signal input end come from the 8th sound The remote control panel local audio source in frequency area.
As shown in figure 3, in the present embodiment, digital audio media matrix includes first selector, second selector, the 3rd Selector and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that 8 tunnels are selected on 28 tunnels Selector, the third selector are that No. 1 selector is selected on 36 tunnels.
In the present embodiment, the 1st to 20 audio signal input end of digital audio media matrix passes through each 3rd number respectively 20 inputs of word control audio processing chip connection first selector；20 output ends of the first selector correspondingly connect Wherein 20 inputs of second selector are connect, the corresponding input of wherein 8 inputs of second selector is defeated by remote controllers Enter to CPU 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control sounds Frequency process chip, the loudspeaker front-end power that 8 the 4th digital control audio processing chips are connected respectively 8 audio zones are put Big device；Wherein 20 inputs of the third selector correspondingly connect 20 output ends of first selector, third selector The corresponding input of wherein 8 inputs inputted by remote controllers to CPU 8 tunnel audio signals, wherein the 8 of third selector Individual input is connected respectively the output end of 8 the 4th digital control audio processing chips, and the output end of third selector is led to Cross digital power amplifier and connect local loudspeaker, monitor function is realized by local loudspeaker；First selector, the second selection Device and third selector address end connect CPU respectively, and CPU is each defeated according to first selector, second selector and third selector Enter the priority of audio signal, control first selector, second selector and third selector output end export corresponding audio Signal；On each 3rd digital control audio processing chip and each 4th digital control audio processing chip is all connected with CPU, passes through CPU adjusts the gain and audio on each 3rd digital control audio processing chip with each 4th digital control audio processing chip.
First digital control audio processing chip, the second digital control audio processing chip, the 3rd number in the present embodiment Word controls audio processing chip and the 4th digital control audio processing chip to select TM2314.
The course of work of the present embodiment sound intermediate frequency matrix host computer is specific as follows：
According to the source of each road audio signal, input is set in CPU to the priority of wherein each road audio signal；
When microphone controller receives audio signal, audio signal is sent to CPU；When firefighting warning linkage device receives During to fire alarm trigger signal, fire alarm trigger signal is sent to CPU, when receiving fire protection warning trigger signal, control disappears CPU Anti- alarm reads the audio signal of fire alarm from the first storage card, and fire protection warning device reads fire alarm from the first storage card After audio signal, audio signal is sent to CPU；When trigger controller receives the external timer source of sound that band does triggering After timing pip, CPU reads audio signal by trigger controller from external timer source of sound；
CPU knows the whereabouts of each road audio signal after each road audio signal is received, and Ji Ge roads audio signal to be divided The audio zone being assigned to；Each audio zone is directed to simultaneously, comparing will distribute to the priority of each road audio signal of same audio zone； Then control digital audio media matrix to distribute to the audio signal of the highest priority of same audio zone and be output to diaphone Frequency area.CPU is by controlling first selector, second selector and the 3rd selection in digital audio media matrix in the present embodiment The address end signal of device, realize and send respective audio signal to respective audio area.Such as now second microphone work station is sent out Go out audio signal, the whereabouts of its audio signal sent is the first audio zone, and now it is each to the first audio zone to compare distribution by CPU The priority of road audio signal, if the highest priority for the audio signal that second microphone work station is sent, CPU pass through logarithm The control of first selector, second selector and third selector address end signal in word tone frequency mediamatrix, by second word The front-end power that the audio signal that cylinder work station is sent passes through final output after three selectors to each loudspeaker in the first audio zone In amplifier, in being played out after power amplifier amplifies by loudspeaker.
In the present embodiment, microphone work station sends audio zone distribution control signal by the first controller and connect to CPU, CPU After receiving above-mentioned control signal, distribution is judged into the audio signal of corresponding audio zone, the audio signal of microphone work station output Whether priority is highest, if so, then control digital audio media matrix by the audio signal that microphone work station exports send to Corresponding audio zone；Operating personnel can select microphone work station by the second touch-screen in microphone work station in the present embodiment The audio signal of output to be distributed audio zone extremely, and after being selected by the second touch-screen, the first controller can send corresponding Audio zone distribute control signal to CPU, after CPU receives above-mentioned control signal, it is possible to know microphone work station output The whereabouts of audio signal.Specifically, as shown in figure 4, each audio zone sequence number button is disposed with the second touch-screen, such as Zone1, Zone2 ... Zone8, when the several audio zone sequence number buttons of selection some or certain, the first controller, which will be sent, to be talked about The audio signal that export of cylinder control station distributes the audio zone distribution control signal to some or certain several audio zones to CPU.
In the present embodiment, microphone work station by gain of first controller to the first digital control audio processing chip and Audio is adjusted, and is sent with adjusting microphone work station to the volume of CPU audio signal and audio；In the present embodiment can be with By the second touch-screen in microphone work station trigger gain of first controller to the first digital control audio processing chip and Audio is adjusted.Specifically, volume knob and audio regulation button are provided with the second touch-screen, by volume The operation of regulation button and audio regulation button causes the first controller to be directed to the gain of the first digital control audio processing chip It is adjusted with audio.
In the present embodiment, microphone work station sends master volume Regulate signal by the first controller and keynote imitates Regulate signal To CPU, after CPU receives the master volume Regulate signal and keynote effect Regulate signal of the transmission of the controller of microphone work station first, lead to Cross digital audio media matrix to be adjusted to exporting to the volume of the audio signal of respective audio area loudspeaker and audio, i.e., CPU by controlling digital audio media matrix, believe by the audio that microphone work station is exported to digital audio media matrix by CPU Number volume and audio be adjusted；In the present embodiment, operating personnel can trigger the first controller by the second touch-screen Send master volume Regulate signal and keynote imitates Regulate signal to CPU, then CPU is according to the master volume Regulate signal received and master Audio Regulate signal, the 3rd digital control audio processing chip of correspondence that microphone work station exports audio signal is passed through and/ Or the gain of corresponding 4th digital control audio processing chip and audio are adjusted, so as to realize that microphone work station is output to sound Volume and the audio regulation of the audio signal in frequency area.Specifically, master volume regulation button and master are provided with the second touch-screen Audio regulation button, keynote is sent by the controller of operation first that regulation button is imitated to master volume regulation button and keynote Measure Regulate signal and keynote imitates Regulate signal to CPU.
In the present embodiment, the remote control panel of each audio zone selects the sound of local audio source output by second controller Frequency signal, the audio signal of local audio source output are output to remote control after the second digital control audio processing chip Device, then sent by remote controllers to CPU；If now, distributing into the audio signal of audio zone where remote control panel, The priority of the audio signal of the local audio source output of remote control panel is highest, then CPU controls digital audio media square Battle array exports the audio signal to the loudspeaker of audio zone where the remote control panel；Operating personnel can be with the present embodiment The local audio source audio signal to be sent is selected by the 3rd touch-screen in remote control panel, passes through the 3rd touch-screen After selection, second controller can control local audio source to export corresponding audio signal.
In the present embodiment, remote control panel sends external source of sound selection signal by second controller and connect to CPU, CPU After the external source of sound selection signal for receiving second controller transmission, the audio of audio zone where judging distribution to remote control panel In signal, whether the priority of the audio signal of corresponding external source of sound output is highest, if so, then controlling digital audio media square Battle array exports the audio signal of corresponding external source of sound to the loudspeaker of audio zone where the remote control panel；In the present embodiment, Operating personnel can select the external source of sound of the CPU audio signals to be received by the 3rd touch-screen, be touched when by the 3rd After screen selection, second controller can send corresponding external source of sound selection signal to CPU.Specifically, as shown in figure 5, the 3rd The source of sound sequence number of external source of sound, the Line8 such as Line1, Line2 ..., when some source of sound sequence number button of selection are disposed with touch-screen When, second controller, which will be sent, selects the source of sound sequence number to correspond to the external source of sound selection signal of external source of sound to CPU.
In the present embodiment, remote control panel passes through gain of the second controller to the second digital control audio processing chip It is adjusted with audio, is sent with adjusting local audio source in remote control panel to the volume of CPU audio signal and audio； In the present embodiment, operating personnel can trigger second controller to the second digital control audio processing chip by the 3rd touch-screen Gain and audio be adjusted.Specially：Volume knob and audio regulation button are provided with the 3rd touch-screen, is led to Crossing the operation to volume knob and audio regulation button causes second controller to be directed to the second digital control audio frequency process core The gain of piece and audio are adjusted.
In the present embodiment, remote control panel sends master volume Regulate signal and keynote effect regulation letter by second controller Number to CPU, CPU receives the master volume Regulate signal and keynote effect Regulate signal of remote control panel second controller transmission Afterwards, control digital audio media matrix to exporting to the volume of the audio signal of audio zone loudspeaker where remote control panel and Audio is adjusted；In the present embodiment, operating personnel can be triggered second controller by the 3rd touch-screen and send master volume tune Save signal and keynote imitates Regulate signal to CPU, then CPU is according to master volume Regulate signal and keynote the effect Regulate signal received To corresponding 3rd digital control audio processing chip and/or corresponding 4th digital control audio frequency process in DAB mediamatrix The gain of chip and audio are adjusted, so as to realize audio zone where digital audio media Output matrix to remote control panel Audio signal volume and the audio regulation of loudspeaker.Specifically, it is provided with master volume regulation button and master in the 3rd touch-screen Audio regulation button, keynote is sent by the operation second controller that regulation button is imitated to master volume regulation button and keynote Measure Regulate signal and keynote imitates Regulate signal to CPU.
In the present embodiment, the external equipment connected by cpu port directly triggers CPU control digital audio media matrixes pair Export to the volume of the audio signal of each audio zone loudspeaker and audio and be adjusted；CPU port is connected with the present embodiment First touch-screen, CPU can directly be triggered to the corresponding 3rd in DAB mediamatrix by the operation of the first touch-screen The gain of digital control audio processing chip and/or corresponding 4th digital control audio processing chip and audio are adjusted, from And realize the audio signal volume and audio of digital audio media Output matrix to respective audio area loudspeaker and adjust.Specifically, Volume knob and audio regulation button are provided with the first touch-screen, by being adjusted to master volume regulation button and keynote effect The operation of section button causes CPU to realize to the 3rd digital control audio processing chip and/or the 4th digital control audio frequency process core The gain of piece and audio are adjusted.
In the present embodiment, the external equipment triggering CPU connected by cpu port is selected the source of sound of each audio zone Select；Selections of the CPU to the source of sound of each audio zone is realized by the operation of the first touch-screen in the present embodiment, specifically, such as Shown in Fig. 6, be provided with 17 source of sound buttons in the first touch-screen, including 8 external source of sound button Line1 to Line8,8 Audio zone corresponds to the source of sound button WP1 to WP8 of remote control panel offer；1 from CPU the second storage cards connected or outer The source of sound button of portion's USB flash disk (such as MP3), will be that corresponding audio zone selects corresponding source of sound when pressing some source of sound button. E.g. to be that the first audio zone selects source of sound, then may be selected to click on one of them in Line1 to Line8, WP1 and MP3 Button, if selection Line1 to Line8 one of them, then the source of sound of the first audio zone by for 8 external sources of sound wherein One, if selection WP1, then the source of sound of the first audio zone selects the remote control panel from the audio zone, such as figure MP3, then the source of sound of the first audio zone will come from the second storage card or outside USB flash disk.
In the present embodiment, when firefighting warning linkage device receives fire alarm trigger signal, by fire alarm trigger signal send to CPU, CPU can control fire protection warning device to read fire alarm from the first storage card when receiving fire protection warning trigger signal Audio signal, so as to be sent to CPU；Trigger controller can also be controlled to get the audio signal that external fire alarm source of sound is sent, So as to be sent to CPU, while fire alarm trigger signal is sent to outside relevant device by trigger controller.Above two operation side The selection of formula, operating personnel can be set in CPU.
In the present embodiment, CPU receives 28 tunnel audio signals, and the source of each road audio signal is as follows：Wherein the 1st to 8 tunnel 8 microphone work stations that audio signal is connected from microphone controller, the 9th to 16 tunnel audio signal come from 8 external sources of sound, 17th tunnel audio signal comes from fire protection warning device, the external timer that the 18th tunnel audio signal is connected from trigger controller Source of sound, the external fire alarm source of sound that the 19th tunnel audio signal is connected from trigger controller, the 20th tunnel audio signal come from CPU The second storage card or outside USB flash disk connected, the 21st to 28 tunnel audio signal is from 8 audio zones that remote controllers are connected Remote control panel；
Wherein 1 or several microphone work stations are as artificial urgent broadcast work station in 8 microphone work stations, if being left Cylinder work station is common broadcast work station, and the audio signal priority level initializing of artificial urgent broadcast work station output is highest；Come The priority level initializing of the 17th tunnel audio signal from the external tunnel audio signal of fire alarm source of sound the 19th or from fire protection warning device is second； The priority level initializing of the audio signal of common broadcast work station output is the 3rd；Come the 18th tunnel of the external timer source of sound of self-timing The priority level initializing of audio signal is the 4th；21st to 28 tunnel audio signal of the remote control panel from 8 audio zones Priority level initializing is the 5th；The priority level initializing of the 9th to the 16 tunnel audio signal from external timer source of sound is the 6th；Come from The priority level initializing of 20th tunnel audio signal of the second storage card or outside USB flash disk is the 7th；Wherein priority be in the 3rd it is several Certain priority be present in road audio signal；The 3rd is in when the audio signal of distribution to certain audio zone includes priority During multipath audio signal, now CPU selects priority in multiple signals to arrange most preceding audio signal all the way.Priority is in Certain priority be present in second the 19th tunnel audio signal and the 17th tunnel audio signal；This preferred sequence can basis Demand carries out setting.
Embodiment 2
The present embodiment discloses multiple Audio Matrix main frames in a kind of Public Address system, including embodiment 1, as shown in fig. 7, CPU in each Audio Matrix main frame is cascade connection, wherein first order CPU positions host CPU, and other CPU at different levels are from CPU；It is described Host CPU sends the corresponding each road audio signal received to each from CPU step by step after each road audio signal is received；This When each CPU the whereabouts of received each road audio signal is known from host CPU, Ji Ge roads audio signal to be distributed sound extremely Frequency area；Each audio zone of Audio Matrix main frame where being directed to each CPU, comparing will distribute to each road audio letter of same audio zone Number priority, then control digital audio media matrix by distribute to same audio zone highest priority audio signal it is defeated Go out to corresponding audio zone.
In the present embodiment, altogether including 32 Audio Matrix main frames, i.e. 32 corresponding in 32 Audio Matrix main frames CPU is cascade connection；Wherein each Audio Matrix main frame includes 8 audio zones；Therefore the present embodiment Public Address system altogether Including 256 audio zones.Wherein 8 audio zones that the 1st CPU in cascade is Audio Matrix main frame where host CPU are defined as 1st to 8 audio zone, 8 audio zones of Audio Matrix main frame where the 2nd CPU (from CPU) in cascade are defined as the 9th to 16 Audio zone, the like, 8 audio zones of Audio Matrix main frame where the 32nd CPU (from CPU) are defined as the 249th to 256 Audio zone.
In each Audio Matrix main frame, digital audio media matrix includes 28 audio signal input ends, wherein, the 1st to 8 Audio signal input end input microphone controller sends defeated to CPU 8 tunnel audio signals, the 9th to 16 audio signal input end Enter 8 external sources of sound to send to CPU 8 tunnel audio signals, the 17th audio signal input end input fire protection warning device send to CPU audio signal, the 18th audio signal input end input trigger controller send to CPU from external timer source of sound and connect The audio signal received, the 19th audio signal input end input trigger controller send to CPU from external fire alarm source of sound and connect The audio signal received；20th audio signal input end input is read to CPU audio letter from the second storage card or outside USB flash disk Number；The audio signal of 21st to 28 audio signal input end input 8 remote audio signal output end output of remote controllers；
In each Audio Matrix main frame, digital audio media matrix includes first selector, second selector, the 3rd selection Device and third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and second selector is that No. 8 selectors are selected on 28 tunnels, The third selector is that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, as shown in figure 8, the digital audio media matrix The 1st to 20 audio signal input end its of first selector is connected by each 3rd digital control audio processing chip respectively In 20 inputs；20 output ends of the first selector correspondingly connect wherein 20 inputs of second selector；When CPU therein be from CPU when, as shown in figure 8, the 1st to 20 audio signal input end of digital audio media matrix leads to respectively Cross wherein 20 inputs of each 3rd digital control audio processing chip connection first selector；Another the 20 of first selector Individual input input upper level CPU is sent to this grade of CPU 20 tunnel audio signals, and 20 output ends of first selector correspondingly connect Connect wherein 20 inputs of second selector；
In each Audio Matrix, the corresponding input of wherein 8 inputs of second selector is inputted to CPU's by remote controllers 8 tunnel audio signals；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 the 4th digital control audio processing chips are connected respectively the loudspeaker front-end power amplifier of 8 audio zones；It is described Wherein 20 inputs of third selector correspondingly connect 20 output ends of first selector, wherein 8 of third selector The corresponding input of input is inputted to CPU 8 tunnel audio signals, wherein 8 inputs point of third selector by remote controllers The output end of 8 the 4th digital control audio processing chips Dui Ying not be connected, the output end of third selector passes through digital power Amplifier connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU respectively, CPU controls first choice according to the priority of first selector, second selector and each input audio signal of third selector Device, second selector and third selector output end export corresponding audio signal；
In each Audio Matrix, on each 3rd digital control audio processing chip and each 4th digital control audio processing chip CPU is all connected with, is adjusted by CPU on each 3rd digital control audio processing chip and each 4th digital control audio frequency process core The gain of piece and audio.
The course of work that the present embodiment states Public Address system is as follows：
According to the source of each road audio signal, input is set in each CPU of cascade to wherein each road audio signal Priority；
In the Audio Matrix main frame where host CPU, when the microphone controller of host CPU connection receives audio signal, Audio signal is sent to host CPU；When the firefighting warning linkage device of host CPU connection receives fire alarm trigger signal, by fire alarm Trigger signal is sent to host CPU, and when receiving the fire protection warning trigger signal that it is connected, control host CPU is connected host CPU Fire protection warning device the audio signal of fire alarm is read from the first storage card, the fire protection warning device that host CPU is connected is deposited from first After reading the audio signal of fire alarm in card storage, audio signal is sent to host CPU；The trigger controller that host CPU is connected connects Receive after band does the timing pip of external timer source of sound of triggering, the trigger controller that host CPU is connected through from External timer source of sound reads audio signal；
Each road audio signal is sent to respectively from CPU by host CPU step by step after each road audio signal is received, and respectively from For CPU by getting the whereabouts of each road audio signal at host CPU, Ji Ge roads audio signal to be distributed audio zone extremely；Pin For each audio zone of Audio Matrix main frame where each CPU, compare to distribute it is excellent to each road audio signal of same audio zone First level；Then each CPU controls the digital audio media matrix that it is connected to distribute to the highest priority of same audio zone Audio signal is output to corresponding audio zone.
In the present embodiment, in the Audio Matrix main frame where host CPU, microphone controller passes through each microphone audio thereon Input port connects each microphone work station；The first controller connection host CPU in each microphone work station；Other do not lead to from CPU Cross microphone controller connection microphone work station.
In the present embodiment, microphone work station can be sent audio zone by the first controller and distribute control signal to host CPU, After host CPU receives above-mentioned control signal, above-mentioned control signal is sent to other step by step from CPU, each CPU judges point respectively Audio Matrix main frame where being assigned to it is corresponded in the audio signal of audio zone, the audio signal priority of microphone work station output Whether it is highest, if so, the audio that then each CPU controls the digital audio media matrix that it is connected to export microphone work station is believed Number send to corresponding audio zone；The audio signal that wherein distribution control signal in audio zone includes exporting microphone work station is distributed To the information of the one of audio zone in the 1st to 256 audio zone.In the present embodiment, operating personnel can pass through microphone work station In the audio signal of the second touch-screen selection microphone work station output to be distributed audio zone extremely, pass through the choosing of the second touch-screen After selecting, the first controller can send corresponding audio zone and distribute control signal to host CPU, and host CPU receives above-mentioned control letter After number, it is possible to know the whereabouts of the audio signal of microphone work station output.Specifically, it is disposed with the second touch-screen each Audio zone sequence number button, the Zone256 such as Zone1, Zone2 ..., when the several audio zone sequence number buttons of selection some or certain, first Controller, which will be sent, distributes the audio zone that the audio signal that microphone control station exports is distributed to some or certain several audio zones Control signal is to host CPU.And other are forwarded to step by step by host CPU from CPU, is realized in some or certain several audio zone loudspeakers Play the audio signal of microphone work station output.
In the present embodiment, microphone work station by gain of first controller to the first digital control audio processing chip and Audio is adjusted, and is sent with adjusting microphone work station to the volume of the audio signal of host CPU and audio；In the present embodiment may be used To trigger gain of first controller to the first digital control audio processing chip by the second touch-screen in microphone work station It is adjusted with audio.Specifically, volume knob and audio regulation button are provided with the second touch-screen, by sound The operation for measuring regulation button and audio regulation button causes the first controller to be directed to the increasing of the first digital control audio processing chip Benefit and audio are adjusted.
In the present embodiment, microphone work station sends master volume Regulate signal by the first controller and keynote imitates Regulate signal To host CPU, host CPU receives the master volume Regulate signal and keynote effect Regulate signal of the controller of microphone work station first transmission Afterwards, instruction sends other to from CPU step by step, after each CPU receives master volume Regulate signal and keynote effect Regulate signal, by each The digital audio media matrix that CPU is connected is carried out to exporting to the volume of the audio signal of each audio zone loudspeaker and audio Regulation.In the present embodiment, operating personnel can trigger the first controller by the second touch-screen and send master volume Regulate signal Regulate signal is imitated to host CPU with keynote, is then transmitted to other step by step by host CPU from CPU, and each CPU is according to receiving master volume Regulate signal and keynote effect Regulate signal, the 3rd digital control audio of correspondence that microphone work station exports audio signal is passed through The gain of process chip and/or corresponding 4th digital control audio processing chip and audio are adjusted, so as to realize microphone work Work station is output to volume and the audio regulation of the audio signal of audio zone.Specifically, it is provided with master volume in the second touch-screen Regulation button and keynote effect regulation button, by the control of operation first that regulation button is imitated to master volume regulation button and keynote Device processed sends master volume Regulate signal and keynote imitates Regulate signal to host CPU.
In the present embodiment, in each Audio Matrix main frame, the remote control panel of each audio zone is selected by second controller The audio signal of local audio source output is selected, the audio signal of local audio source output passes through the second digital control audio frequency process core Remote controllers are output to after piece, are then sent by remote controllers to CPU；If now, distribute to where remote control panel In the audio signal of audio zone, the priority of the audio signal of the local audio source output of remote control panel is highest, then CPU Control digital audio media matrix exports the audio signal to the loudspeaker of audio zone where the remote control panel；In this reality Apply in example, be directed to each Audio Matrix main frame, operating personnel can select this by the 3rd touch-screen in remote control panel The ground audio-source audio signal to be sent, after being selected by the 3rd touch-screen, second controller can control local audio source Export corresponding audio signal.
In the present embodiment, in each Audio Matrix main frame, the remote control panel of each audio zone is sent out by second controller External source of sound selection signal is sent to CPU, after CPU receives the external source of sound selection signal of second controller transmission, judges to distribute Into the audio signal of audio zone where remote control panel, the priority of the audio signal of corresponding external source of sound output whether be Highest, if so, then controlling digital audio media matrix to export the audio signal of corresponding external source of sound to the remote control panel The loudspeaker of place audio zone.In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can pass through the 3rd touch-screen The external source of sound of the CPU audio signals to be received is selected, after being selected by the 3rd touch-screen, second controller can send phase The external source of sound selection signal answered is to CPU.Specifically, being disposed with the source of sound sequence number of external source of sound in the 3rd touch-screen, it is elected to When selecting some source of sound sequence number button, second controller will send the external source of sound choosing for selecting the source of sound sequence number to correspond to external source of sound Signal is selected to CPU.
In the present embodiment, in each Audio Matrix main frame, the remote control panel of each audio zone passes through second controller pair The gain of second digital control audio processing chip and audio are adjusted, and are sent out with adjusting local audio source in remote control panel Deliver to the volume and audio of CPU audio signal；In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can lead to Gain and audio of the 3rd touch-screen triggering second controller to the second digital control audio processing chip is crossed to be adjusted.Specifically For：Volume knob and audio regulation button are provided with the 3rd touch-screen, by being adjusted to volume knob and audio The operation of section button causes second controller to be adjusted for the gain of the second digital control audio processing chip and audio.
In the present embodiment, in each Audio Matrix main frame, the remote control panel of each audio zone is sent out by second controller Master volume Regulate signal and keynote is sent to imitate Regulate signal to CPU, CPU receives the master of remote control panel second controller transmission After volume adjustment signals, control digital audio media matrix is to exporting to the audio of audio zone loudspeaker where remote control panel The volume and audio of signal are adjusted；In the present embodiment, each Audio Matrix main frame is directed to, operating personnel can pass through the 3rd Touch-screen triggering second controller sends master volume Regulate signal and keynote and imitates Regulate signal to CPU, and then CPU is according to receiving Master volume Regulate signal and keynote imitate Regulate signal to corresponding 3rd digital control audio frequency process in DAB mediamatrix The gain of chip and/or corresponding 4th digital control audio processing chip and audio are adjusted, so as to realize DAB matchmaker Volume matrix is exported to the audio signal volume of audio zone loudspeaker where remote control panel and audio regulation.Specifically, Master volume regulation button and keynote effect regulation button are provided with three touch-screens, by being adjusted to master volume regulation button and keynote effect The operation of section button make it that second controller sends master volume Regulate signal and keynote imitates Regulate signal to CPU.
In the present embodiment, in each Audio Matrix main frame, the external equipment connected by cpu port directly triggers CPU controls Digital audio media matrix processed is to exporting to the volume and audio of the audio signal of each audio zone loudspeaker of the Audio Matrix main frame It is adjusted；The external equipment connected by host CPU port directly triggers host CPU and the numeral for controlling it to be connected from CPU Audio frequency media matrix is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker and audio, i.e., when host CPU end When mouth receives the volume and audio regulation trigger signal of external equipment, while volume and audio regulation trigger signal are sent to Other are from CPU, host CPU and respectively from CPU respectively according to volume and audio regulation trigger signal, the digital sound for controlling it to be connected Frequency mediamatrix is adjusted to exporting to the volume of the audio signal of each audio zone loudspeaker and audio.Wherein each cpu port The external equipment of connection is the first touch-screen；In the present embodiment, in each Audio Matrix main frame, it can be connected by each cpu port The first touch-screen connect carries out volume and sound to the audio signal of 8 audio zone loudspeakers of the Audio Matrix main frame where CPU The regulation of effect.The first touch-screen that can also be connected by host CPU port is carried out to the audio signal of 256 audio zone loudspeakers The regulation of volume and audio.
In the present embodiment, in each Audio Matrix main frame, the external equipment connected by cpu port triggers CPU to the sound The source of sound of the audio zone of frequency matrix host computer is selected；The external equipment connected by host CPU port directly trigger host CPU and The source of sound of each audio zone is selected from CPU controls；I.e. in the present embodiment, in each Audio Matrix main frame, it can pass through First touch-screen of each CPU ports connection is selected the source of sound of 8 audio zones of the Audio Matrix main frame where CPU.Also The first touch-screen that can be connected by host CPU port, which is realized, to be selected the source of sound of 256 audio zones.
In the present embodiment, when the firefighting warning linkage device of host CPU connection receives fire alarm trigger signal, fire alarm is triggered Signal is sent to host CPU, and when receiving the fire protection warning trigger signal that it is connected, what control host CPU was connected disappears host CPU Anti- alarm reads the audio signal of fire alarm from the first storage card, and the fire protection warning device that host CPU is connected is from the first storage card In read the audio signal of fire alarm after, audio signal is sent to host CPU, after host CPU receives above-mentioned audio signal, gradually Send to other from CPU；Or host CPU leads to when receiving the fire alarm trigger signal that its fire-fighting link device connected is sent Cross its trigger controller connected and get the audio signal that external fire alarm source of sound is sent, while the triggering connected by it Controller sends fire alarm trigger signal to outside.
Above-described embodiment is the preferable embodiment of the utility model, but embodiment of the present utility model is not by above-mentioned The limitation of embodiment, it is other it is any without departing from Spirit Essence of the present utility model with made under principle change, modify, replace Generation, combination, simplify, should be equivalent substitute mode, be included within the scope of protection of the utility model.

Claims (10)

1. a kind of Audio Matrix main frame, it is characterised in that including CPU, digital audio media matrix, microphone controller, fire-fighting report Alert device, fire-fighting link device and trigger controller；
The microphone controller is provided with multiple microphone audio input ports, and the microphone controller connects CPU, microphone is controlled The audio signal of device audio input port input is sent to CPU；
The fire protection warning device connection is stored with the first storage card of the audio signal of fire alarm；The fire protection warning device connects CPU, Control fire protection warning device to read audio signal from the first storage card by CPU, and the audio signal of reading is sent to CPU；
The fire-fighting link device is provided with multiple fire alarm trigger signal input ports, and the fire-fighting link device connects CPU, will received To fire alarm trigger signal be sent to CPU, CPU when receiving fire alarm trigger signal, control fire protection warning device from first storage The audio signal of fire alarm is read in card；
The trigger controller connect band does the external timer source of sound of triggering, and the trigger controller connects CPU, and CPU leads to Cross trigger controller receive external timer source of sound do trigger signal after, external timer is received by trigger controller The audio signal that source of sound is sent；
The CPU is provided with multiple external audio input ports, and external source of sound is connected by external audio input port, receives outer Put the audio signal of source of sound transmission；
The CPU connections digital audio media matrix, corresponding audio signal is distributed by CPU control digital audio media matrixes To corresponding audio zone.
2. Audio Matrix main frame according to claim 1, it is characterised in that the trigger controller connects external fire alarm sound Source, CPU get external fire alarm source of sound when receiving the fire alarm trigger signal of fire-fighting link device transmission by trigger controller The audio signal of transmission, while fire alarm trigger signal is sent to outside by trigger controller.
3. Audio Matrix main frame according to claim 2, it is characterised in that the trigger controller includes main circuit, the One power amplifier and the second power amplifier；
The main circuit includes the first photo-coupler, the second photo-coupler, the first relay and the second relay；First relay Including two groups of contacts, respectively first group of contact and the second composition contact, the coil anode of the first relay are reverse by one Diode D600 connection coil negative terminals, the coil anode connection dc source 24V of the first relay, the coil of the first relay are born The colelctor electrode of the first NPN triode of end connection, the base stage of the first NPN triode is by resistance R612 connections CPU I/O port, and the By being grounded after being sequentially connected resistance R612 and resistance R614, the emitter stage of the first NPN triode connects the base stage of one NPN triode Ground；First first group of relay contact is made up of the first normally closed stationary contact, the first normally opened stationary contact and the first movable contact, first after Second group of contact of electrical equipment is made up of the second normally closed stationary contact, the second normally opened stationary contact and the second movable contact, wherein the first movable contact It is all connected with one end of external timer source of sound trigger signal output with the second movable contact, the first normally opened stationary contact and second normally opened quiet Contact is all connected with the other end of external timer source of sound trigger signal output, and the first normally opened stationary contact and the second normally opened stationary contact lead to Cross resistance R622 ground connection；The first light is connected after first movable contact and the second movable contact series opposing diode D603 and resistance R624 The first input port of coupler, the second input port that dc source+5V passes through diode D601 the first photo-couplers of connection； Reverse two pole is connected between the first input port of first photo-coupler and the second input port of the first photo-coupler Pipe D602, the output port of the first photo-coupler is by resistance R615 connection dc source+3.3V, while the first photo-coupler Output port connects CPU I/O port；Wherein the first input port of the first photo-coupler and the first photo-coupler is second defeated Inbound port corresponds to anode and the negative electrode both ends in the first photo-coupler internal illumination source respectively；Second relay touches including two groups Point, respectively the 3rd group of contact and the 4th composition contact, the coil anode of the second relay pass through a backward dioded D606 Connect coil negative terminal, the coil anode connection dc source 24V of the second relay, the coil negative terminal connection second of the second relay The colelctor electrode of NPN triode, the base stage of the second NPN triode pass through resistance R613 connections CPU I/O port, the poles of the 2nd NPN tri- The base stage of pipe after being sequentially connected resistance R613 and resistance R617 by being grounded, the grounded emitter of the second NPN triode；Second after The 3rd group of contact of electrical equipment is made up of the 3rd normally closed stationary contact, the 3rd normally opened stationary contact and the 3rd movable contact, the second relay the 4th Group contact is made up of the 4th normally closed stationary contact, the 4th normally opened stationary contact and the 4th movable contact, wherein the 3rd movable contact and the 4th moves Contact is all connected with one end of external equipment fire alarm trigger signal input, and the 3rd normally opened stationary contact and the 4th normally opened stationary contact are all connected with The other end of external equipment fire alarm trigger signal input, the 3rd normally opened stationary contact and the 4th normally opened stationary contact are connect by resistance R623 Ground；The first of the second photo-coupler is connected after 3rd movable contact and the 4th movable contact series opposing diode D605 and resistance R625 Input port, the second input port that dc source+5V passes through diode D601 the second photo-couplers of connection；Second photo-coupler First input port and the second photo-coupler the second input port between be connected with a backward dioded D604, the second light The output port of coupler is by resistance R616 connection dc source+3.3V, while the output port of the second photo-coupler connects CPU I/O port；Second input port of the wherein first input port of the second photo-coupler and the second photo-coupler is right respectively It should be anode and the negative electrode both ends in the second photo-coupler internal illumination source；
First power amplifier includes the first operational amplifier, the second operational amplifier and the first potentiometer, wherein the One potentiometer is slide rheostat；The inverting input of first operational amplifier is by being sequentially connected in series resistance R601 and electrochemical capacitor The audio signal output negative terminal of external timer source of sound is connected after E600, wherein electrochemical capacitor E600 positive pole connects external timer The audio output negative terminal of source of sound, after the normal phase input end of the first operational amplifier is by being sequentially connected in series resistance R601 and electric capacity E600 The audio input anode of external timer source of sound is connected, wherein electrochemical capacitor E601 negative pole connects the audio of external timer source of sound Output plus terminal；After the resistance R608 and polarity free capacitor C601 of one end connection parallel connection that resistance R601 connects with electrochemical capacitor E600 Ground connection, the resistance R609 and polarity free capacitor C603 of one end connection parallel connection that resistance R602 connects with electrochemical capacitor E601 are followed by Ground, it is grounded after the normal phase input end connection of the first operational amplifier in parallel resistance R603 and polarity free capacitor C604；First fortune The first operational amplifier is connected after calculating the resistance R600 and polarity free capacitor C600 of the inverting input connection parallel connection of amplifier Output end；The output end of first operational amplifier connects one end of the first potentiometer, and the other end of the first potentiometer is grounded, and first The anti-phase input of the second operational amplifier is connected after the electrochemical capacitor E604 and resistance R618 of the sliding end connection series connection of potentiometer End, the positive input end grounding of the second operational amplifier, the resistance of the inverting input connection parallel connection of the second operational amplifier The output end of the second operational amplifier, the output end connection of the second operational amplifier are connected after R620 and polarity free capacitor C621 CPU I/O port, the audio signal of external timer source of sound output are inputted into CPU after the first power amplifier；
Second power amplifier includes the 3rd operational amplifier, four-operational amplifier and the second potentiometer, wherein the second electricity Position device is slide rheostat；The inverting input of 3rd operational amplifier is by being sequentially connected in series resistance R605 and electrochemical capacitor E602 The audio signal of connection and external fire alarm source of sound output negative terminal, wherein electrochemical capacitor E602 positive pole connect and external fire alarm source of sound afterwards Audio output negative terminal, after the normal phase input end of the 3rd operational amplifier is by being sequentially connected in series resistance R606 and electrochemical capacitor E603 The audio input anode of external fire alarm source of sound is connected, wherein electrochemical capacitor E603 negative pole connects the audio output of external fire alarm source of sound Anode；The resistance R610 and polarity free capacitor C606 for one end connection parallel connection that resistance R605 connects with electrochemical capacitor E602 are followed by It is grounded after the resistance R611 and polarity free capacitor C608 of one end connection parallel connection that ground, resistance R606 and electric capacity E603 are connected, the 3rd It is grounded after the resistance R607 and polarity free capacitor C609 of the normal phase input end connection parallel connection of operational amplifier；3rd operational amplifier The in parallel resistance R604 and polarity free capacitor C605 of inverting input connection after connect the output end of the 3rd operational amplifier；The The output end of three operational amplifiers connects one end of the second potentiometer, and the other end of the second potentiometer is grounded, the second potentiometer The inverting input of four-operational amplifier, the 4th fortune are connected after the electrochemical capacitor E605 and resistance R619 of sliding end connection series connection Calculate the positive input end grounding of amplifier, the inverting input connection of four-operational amplifier resistance R621 in parallel and nonpolarity The output end of four-operational amplifier is connected after electric capacity C622, the output end of four-operational amplifier connects CPU I/O port, outside The audio signal for putting the output of fire alarm source of sound is inputted into CPU after the second power amplifier.
4. Audio Matrix main frame according to claim 1, it is characterised in that the CPU is connected with cuts controller by force, passes through Strong cut when controller connection fire alarm occurs needs equipment out of service, and the fire alarm that the transmission of fire-fighting link device is received in CPU is touched During signalling, send a control signal to and cut controller by force, needed when controlling fire alarm to occur by cutting controller by force out of service Equipment is out of service；
The CPU is connected with the first touch-screen.
5. Audio Matrix main frame according to claim 1, it is characterised in that the microphone controller passes through each words thereon Cylinder audio input port connects each microphone work station；
The microphone work station includes microphone, the first controller, the first digital control audio processing chip and the second touch-screen, The audio signal output end of the microphone connects the input of the first digital control audio processing chip, the first numeral control The microphone audio input port of the output end connection microphone controller of audio processing chip processed；At the first digital control audio Manage chip and connect the first controller, entered by the first controller for the gain of the first digital control audio processing chip and audio Row regulation；First controller connects CPU, and second touch-screen connects the first controller.
6. Audio Matrix main frame according to claim 1, it is characterised in that also including remote controllers, the long-range control Device processed is provided with multiple remote audio signal input ports and multiple remote audio signal output ports；The remote controllers lead to Each remote audio signal input port connection crossed thereon is arranged on each remote control panel of each audio zone, long-range for receiving The audio signal that control panel is sent；The remote controllers connect CPU, pass through each remote audio signal output port thereon The audio signal that it is received from each remote control panel sends CPU to；In the remote controllers, per several remote audios Signal input port shares a remote audio signal output port, wherein connection belongs to same audio zone remote control panel Each remote audio signal input port shares a remote audio signal output port, i.e., the remote control panel of same audio zone Send to the audio signal of remote controllers and exported by the same remote audio signal output port in remote controllers Into CPU, after CPU receives the audio signal of remote controllers transmission, send to digital audio media matrix, then basis should The corresponding audio signal of two priority classes digital audio media Output matrix of audio signal is to each audio zone；
Each remote control panel includes second controller, local audio source, the second digital control audio processing chip and the 3rd Touch-screen；The second controller connects CPU, and the 3rd touch-screen connects second controller；
The second controller connects local audio source, for the audio signal for selecting local audio source to export；Second number The input connection local audio source of word control audio processing chip, output end connect remote controllers wherein by signal wire One remote audio signal input port；The second controller connects the second digital control audio processing chip, for second Digital control audio processing chip gain and the regulation of audio.
7. Audio Matrix main frame according to claim 1, it is characterised in that the digital audio media matrix includes 28 Audio signal input end, wherein, the 1st to 8 audio signal input end input microphone controller is sent to CPU 8 tunnel audio letters Number, the 9th to 16 audio signal input end inputs 8 external sources of sound and sent to CPU 8 tunnel audio signals, the 17th audio letter Number input input fire protection warning device is sent to CPU audio signal, and the 18th audio signal input end inputs trigger controller Send to the CPU audio signal received from external timer source of sound, the 19th audio signal input end input triggering control Device is sent to the CPU audio signal received from external fire alarm source of sound；20th audio signal input end input is deposited from second Card storage or outside USB flash disk are read to CPU audio signal；21st to 28 audio signal input end input remote controllers are 8 remote The audio signal of journey audio signal output end output；
The digital audio media matrix includes first selector, second selector and third selector, the first choice Qi Wei 40 selects on tunnel No. 20 selectors, and the second selector is that No. 8 selectors are selected on 28 tunnels, and the third selector is that 36 tunnels select 1 Road selector；
1st to 20 audio signal input end of the digital audio media matrix respectively by each 3rd digital control audio at Manage 20 inputs of chip connection first selector；20 output ends of the first selector correspondingly connect second selector Wherein 20 inputs, the corresponding input of wherein 8 inputs of second selector inputted to CPU 8 tunnels by remote controllers Audio signal；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 4th digital control audio processing chip is connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 3rd Wherein 20 inputs of selector correspondingly connect 20 output ends of first selector, wherein 8 inputs of third selector It is right respectively to CPU 8 tunnel audio signals, wherein 8 inputs of third selector that the corresponding input in end is inputted by remote controllers The output end of 8 the 4th digital control audio processing chips should be connected, the output end of third selector is amplified by digital power Device connects local loudspeaker, and monitor function is realized by local loudspeaker；
The first selector, second selector and third selector address end connect CPU respectively, CPU according to first selector, The priority of second selector and each input audio signal of third selector, control first selector, second selector and the 3rd Selector output end exports corresponding audio signal；
On each 3rd digital control audio processing chip and each 4th digital control audio processing chip is all connected with CPU, passes through CPU Adjust the gain on each 3rd digital control audio processing chip with each 4th digital control audio processing chip and audio.
8. a kind of Public Address system, it is characterised in that including the Audio Matrix any one of multiple Claims 1-4 Main frame, the CPU in each Audio Matrix main frame is cascade connection, wherein first order CPU positions host CPU, and other CPU at different levels are from CPU； The host CPU after each road audio signal is received, by the corresponding each road audio signal received send to step by step it is each from CPU；Now each CPU knows the whereabouts of received each road audio signal from host CPU, and Ji Ge roads audio signal to be distributed Audio zone extremely；Each audio zone of Audio Matrix main frame where being directed to each CPU, comparing will distribute to each road of same audio zone The priority of audio signal, digital audio media matrix is then controlled to distribute to the audio of the highest priority of same audio zone Signal output is to corresponding audio zone.
9. Public Address system according to claim 8, it is characterised in that including any one of 32 Claims 1-4 32 CPU corresponding in described Audio Matrix main frame, i.e. 32 Audio Matrix main frames are cascade connection；Wherein each audio square Battle array main frame includes 8 audio zones.
10. Public Address system according to claim 8, it is characterised in that in each Audio Matrix main frame, digital sound Frequency mediamatrix includes 28 audio signal input ends, wherein, the 1st to 8 audio signal input end input microphone controller hair CPU 8 tunnel audio signals are delivered to, the 9th to 16 audio signal input end inputs 8 external sources of sound and sent to CPU 8 tunnel audios Signal, the 17th audio signal input end input fire protection warning device are sent to CPU audio signal, the 18th audio signal input End input trigger controller sends defeated to the CPU audio signal received from external timer source of sound, the 19th audio signal Enter end input trigger controller to send to the CPU audio signal received from external fire alarm source of sound；20th audio signal is defeated Enter end input to read to CPU audio signal from the second storage card or outside USB flash disk；21st to 28 audio signal input end input The audio signal of 8 remote audio signal output end output of remote controllers；
In each Audio Matrix main frame, digital audio media matrix include first selector, second selector, third selector and Third selector；The first selector is that No. 20 selectors are selected on 40 tunnels, and the second selector is that No. 8 selectors are selected on 28 tunnels, The third selector is that No. 1 selector is selected on 36 tunnels；
In each Audio Matrix main frame, when CPU therein is host CPU, the 1st to 20 audio of the digital audio media matrix Signal input part connects wherein 20 inputs of first selector by each 3rd digital control audio processing chip respectively；Institute 20 output ends for stating first selector correspondingly connect wherein 20 inputs of second selector；When CPU therein is from CPU When, the 1st to 20 audio signal input end of the digital audio media matrix respectively by each 3rd digital control audio at Manage wherein 20 inputs of chip connection first selector；Another 20 inputs input upper level CPU of first selector is passed This grade of CPU 20 tunnel audio signals are delivered to, 20 output ends of first selector correspondingly connect wherein 20 of second selector Input；
In each Audio Matrix, the corresponding input of wherein 8 inputs of second selector is inputted to CPU 8 tunnels by remote controllers Audio signal；8 output ends of the second selection selector are connected respectively 8 the 4th digital control audio processing chips, 8 4th digital control audio processing chip is connected respectively the loudspeaker front-end power amplifier of 8 audio zones；Described 3rd Wherein 20 inputs of selector correspondingly connect 20 output ends of first selector, wherein 8 inputs of third selector It is right respectively to CPU 8 tunnel audio signals, wherein 8 inputs of third selector that the corresponding input in end is inputted by remote controllers The output end of 8 the 4th digital control audio processing chips should be connected, the output end of third selector is amplified by digital power Device connects local loudspeaker, and monitor function is realized by local loudspeaker；
In each Audio Matrix, the first selector, second selector and third selector address end connect CPU, CPU roots respectively According to the priority of first selector, second selector and each input audio signal of third selector, control first selector, second Selector and third selector output end export corresponding audio signal；
In each Audio Matrix, connect with each 4th digital control audio processing chip on each 3rd digital control audio processing chip CPU is met, the increasing on each 3rd digital control audio processing chip with each 4th digital control audio processing chip is adjusted by CPU Benefit and audio.
CN201721015488.0U 2017-08-15 2017-08-15 Audio Matrix main frame and Public Address system Active CN207218709U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109830223A (en) * 2019-03-14 2019-05-31 黄淮学院 A kind of virtual reality musical vocal coaches equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109830223A (en) * 2019-03-14 2019-05-31 黄淮学院 A kind of virtual reality musical vocal coaches equipment

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