CN202135135U - Public broadcasting system with telephone conference function - Google Patents
Public broadcasting system with telephone conference function Download PDFInfo
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- CN202135135U CN202135135U CN201120240631U CN201120240631U CN202135135U CN 202135135 U CN202135135 U CN 202135135U CN 201120240631 U CN201120240631 U CN 201120240631U CN 201120240631 U CN201120240631 U CN 201120240631U CN 202135135 U CN202135135 U CN 202135135U
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Abstract
The utility model discloses a public broadcasting system with a telephone conference function, comprising an intelligent public media broadcasting device, a broadcast preamplifier, a broadcast power amplifier, a subarea selector, a multifunctional player and a power supply time sequence device, wherein the multifunctional player is connected with the broadcast preamplifier through circuits, the multifunctional player comprises a telephone conference circuit, a power amplifier circuit, a subarea selection circuit, a subarea circuit, a first MCU (Microprogrammed Control Unit) control circuit, a main chip, a selection circuit, a data input circuit, a reception circuit, an MIC input circuit, a display screen and a peripheral circuit, and the telephone conference circuit comprises a local telephone interface, a ringing circuit, a conversation chip, a pick up/hang up button, a microphone, a horn and a peripheral circuit. The public broadcasting system of the utility model can get rid of telephone restrictions, when a telephone call is coming, a background sound and mute can be switched automatically, and when the telephone call is hung up, the sound can be recovered automatically, in addition, the sound has the characteristics of good reductibility, high definition and little background noise, and the telephone call can be picked up and hung up by one button, thus multi-channel subarea and intelligent power supply output can be realized.
Description
Technical field
The utility model relates to the technical field of Public Address system, is a kind of technology of Public Address system of charged words conferencing function specifically.
Background technology
In order to realize linking up efficient, avoid information distortion, rise rapidly in recent years in videoconference market, in various types of enterprises, is widely used.The called phone meeting generally is exactly to utilize telephone set as instrument, the novel conference model of utilizing telephone wire to have a meeting as carrier.
Public Address system is used to notify and provides for the public audio system of amusement; In case of emergency; Public Address system can also be used to warn the public, as in large-scale occasions such as school, commercial office building, airport, station, harbours this Public Address system being installed successively all.These broadcast systems generally are made up of following equipment, (1) audiogenic device: comprise various wired and wireless microphones, CD, DVD, walkman, cable TV, computer sound card output etc., be used to provide the output of voice, music, recording; (2) tuning device: comprise sound console, equalizer etc., be used to realize audio mixing and tuning, microphone access etc.; (3) audio frequency switching device: mainly be Audio Matrix, be used to the switching and the broadcasting that realize that one tunnel input source of sound is exported to multichannel simultaneously; (4) music output equipment: mainly comprise professional power amplifier and indoor and outdoor audio amplifier and loud speaker, broadcast in each zone behind the music signal amplifying power that is used for needs are broadcasted.Yet this existing Public Address system 1) can't carry out videoconference, so be difficult to satisfy people's requirement; 2) can not realize multichannel subregion and intelligent power output function.
Summary of the invention
The purpose of the utility model provides a kind of in incoming call; Background sound, quiet can automatically switch; Sound just recovers automatically when hanging up, the Public Address system of the charged words conferencing function that sound-reducing property is good, definition is high, background noise is little.
Further purpose is to have the intelligent power output function.
The purpose of the utility model realizes through following technical scheme.
A kind of Public Address system of charged words conferencing function; Comprise intelligent public medium broadcasting equipment, broadcasting preamplifier, broadcasting power amplifier and subregion selector, intelligent public medium broadcasting equipment is connected with the broadcasting preamplifier circuit, and the broadcasting preamplifier is connected with the broadcasting power amplifier circuit; The broadcasting power amplifier is connected with the subregion selector circuit; The subregion selector is connected with speaker circuit, and the subregion selector also is connected with monitoring circuit, it is characterized in that: the Public Address system of said charged words conferencing function also comprises regularly sequential device of a multi-functional player and a power supply; Multi-functional player is provided with audio output interface and is connected with the broadcasting preamplifier circuit through data wire; Power supply regularly the sequential device according to by prime equipment to the back level equipment sequence starting power supply one by one, then by the orderly close-down power consumption equipment of back level to prime, said multi-functional player comprises videoconference circuit, power amplifier, subregion selection circuit, subregion circuit, a MCU control circuit, master chip, selection circuit, data input circuit, radio reception circuit, MIC input circuit, display screen and peripheral circuit when closing power supply; The videoconference circuit is connected with the power amplifier circuit; Power amplifier is connected with the subregion circuit, and subregion selects circuit to be connected with a MCU control circuit circuit, and a MCU control circuit is connected with the subregion circuit; The subregion circuit is connected with the power amplifier circuit; On the subregion circuit, be provided with subregion selector switch and relay, press one or more subregion selector switches and export one or more open and close instructions, a MCU control circuit receives the opening and closing of relay corresponding on the instruction back control subregion circuit; Make the output of corresponding audio signal channel or end; Master chip is connected with MIC input circuit circuit with selecting circuit, data input circuit, radio reception circuit, and master chip is connected with display screen, power amplifier circuit, and data input circuit comprises USB and SD card interface circuit; Master chip broadcasts data or the sound source signal coding of USB, SD card, radio reception circuit, MIC; Display screen adopts high-definition liquid crystal to show, Chinese formula menu operation selects circuit to choose play content through button.
Said videoconference circuit comprises local telephone network interface, ringing circuit, conversation chip, connects and hang button, microphone and loudspeaker and peripheral circuit; Telephone signal is imported through the local telephone network interface; Background sound automaticallyes switch; Send electric bell sound, press to connect and hang button and converse, press again to connect and hang button and break off conversation; Background music recovers automatically, and the chip of wherein conversing includes transmit amplifier, the power amplifier of raising one's voice, attenuation control system, background noise supervisory control system, line loss compensate control, transmission and receiving attenuation device automatically.
Said conversation chip also is connected with the master chip signal.
Said multi-functional player also comprises an alarm playing circuit; Circuit, control circuit are selected in the memory chip, the alarm that have different alarm music in comprising, and memory chip is connected with the power amplifier circuit, and alarm selects circuit to be connected with the control circuit circuit; Control circuit is connected with the memory chip circuit; An alarm button in the circuit is selected in the corresponding alarm of per song in the memory chip, and music is amplified through power amplifier, exports through the subregion circuit again.
Said power amplifier also is connected with a built-in horn circuit.
Said power supply regularly sequential device comprises timer, control transformation switch, manually selects circuit, the 2nd MCU control circuit and power output circuit, and the 2nd MCU control circuit is connected with power output circuit, and the control transformation switch is connected with the 2nd MCU control circuit through manually selecting circuit; Through to whole power supply of the setting of timer control regularly the sequential device startup or close, 220V civil power input power supply regularly sequential device provides power supply, power supply regularly sequential device is opened and when selecting control automatically; Will be according to the 2nd MCU control circuit setting program by the level equipment sequence starting one by one of prime equipment, through the supply socket out-put supply, when closing power supply to the back; Then by back level equipment to prime device shutdown orderly close-down one by one; Select manually control, press arbitrarily manually selection key, with starting corresponding power supply output channel; It is the power supply switch controller that core cooperates electronic circuit to form with the chip microprocessor that said timer is one; Can be with the switching of circulation of sky or week and multi-period control timing device, said the 2nd MCU control circuit mainly cooperates electronic circuit to constitute by a MCU and MCU can control the open and close deferred action of every group of power supply, protects controlled equipment; Said manual selection circuit mainly is made up of the key switch mating circuit; Corresponding two output channels of each button, said power output circuit mainly is made up of the relay mating circuit, the corresponding delivery outlet of relay; Two delivery outlets are formed one group, through the opening and closing control power supply output of relay.
Said supply socket is 16 tunnel supply sockets, manually selects the key switch of circuit that 8 key switches are arranged.
The utility model compared with prior art has the following advantages:
The utility model in the environment that music is opened, in incoming call, the background sound, quiet that can automatically switch, music is just recovered automatically when hanging up.Device adopts telephone wire to connect.Device is through to the focusing on, amplify and reasonably distribute of sound, and makes that sound-reducing property is good, definition is high, background noise is little, and design has more hommization, and it is wrong to avoid in noisy environment, missing conversation or speech quality.During the utility model incoming call, improve the quiet speed of background music, reduce the influence of background noise voice.The utility model can be broken away from the phone restriction; In incoming call, the background sound, quiet that can automatically switch, sound just recovers automatically when hanging up; Sound-reducing property is good, definition is high, background noise is little; And one keyed jointing hang, discharge both hands, avoid long-term cell-phone microphone and cause muscular fatigue.
Since power supply regularly the sequential device can according to by prime equipment to the back grade equipment sequence starting power supply one by one; When closing power supply then by back level to all kinds of power consumption equipments of the orderly close-down of prime, so just artificial operation error has been avoided in effectively unified management and control all kinds of power consumption equipments; Can lower simultaneously power consumption equipment impact to power supply grid again in switch moment; Also avoided the impact of induced current to equipment, guaranteed the stable of whole using electricity system, power supply regularly sequential device can be according to different clients' setting and time opening or closing device; Reduce energy consumption, have more intelligence.
Description of drawings
Fig. 1 is the Public Address system functional-block diagram of the charged words conferencing function of the utility model;
Fig. 2 is the broadcasting power amplifier functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 3 is the broadcasting preamplifier functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 4 is the subregion selector functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 5 is the monitor functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 6 is the power supply timing sequential device functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 7 is the intelligent public medium broadcasting equipment functional-block diagram of the Public Address system of the charged words conferencing function of the utility model;
Fig. 8 is a function player functional-block diagram more than the Public Address system of the charged words conferencing function of the utility model.
Embodiment
Describe in further detail below in conjunction with the Public Address system of accompanying drawing the charged words conferencing function of the utility model.
Shown in Figure 1; The Public Address system of charged words conferencing function; Comprise intelligent public medium broadcasting equipment, broadcasting preamplifier, broadcasting power amplifier and subregion selector, intelligent public medium broadcasting equipment is connected with the broadcasting preamplifier circuit, and the broadcasting preamplifier is connected with the broadcasting power amplifier circuit; The broadcasting power amplifier is connected with the subregion selector circuit; The subregion selector is connected with speaker circuit, and the subregion selector also is connected with monitoring circuit, and the Public Address system of the charged words conferencing function of the utility model the utility model also comprises regularly sequential device of a multi-functional player and a power supply; Multi-functional player is provided with audio output interface and is connected with the broadcasting preamplifier circuit through data wire, and power supply regularly sequential device provides power supply output.Intelligence public medium broadcasting equipment has that MP3 broadcasts automatically, intelligent sectorization broadcast, daily teaching broadcasting, fire-fighting urgent broadcast, background music broadcast, foreign language teaching and hearing are taken an examination broadcast capability; Power supply is the sequential device regularly, can according to by prime equipment to the back level equipment sequence starting power supply one by one, when closing power supply then by the back grade to all kinds of power consumption equipments of the orderly close-down of prime; So just effectively unified management and all kinds of power consumption equipments of control; Avoided artificial operation error, can lower simultaneously power consumption equipment impact to power supply grid again, also avoided the impact of induced current equipment in switch moment; Guaranteed the stable of whole using electricity system; Power supply regularly sequential device can be according to different clients' setting and time opening or closing device reduce energy consumption, has more intelligence; The basic composition of broadcasting preamplifier has source of sound to select, import circuit such as amplification and tonequality control; It is to select required sound source signal to send into the back level that source of sound is selected the effect of circuit; Close other source of sound passages simultaneously; The effect of input amplifier circuit is that sound source signal is amplified to nominal level, and the effect of tone control circuit is that the frequency characteristic of sound system can be controlled, to reach the acoustical quality of high-fidelity.
Like Fig. 8; Multi-functional player comprises videoconference circuit, power amplifier, subregion selection circuit, subregion circuit, a MCU control circuit, master chip, selection circuit, data input circuit, radio reception circuit, MIC input circuit, display screen and peripheral circuit, and the videoconference circuit is connected with the power amplifier circuit, and power amplifier is connected with the subregion circuit; Subregion selects circuit to be connected with a MCU control circuit circuit; The one MCU control circuit is connected with the subregion circuit, and the subregion circuit is connected with the power amplifier circuit, on subregion circuit electricity, is provided with subregion selector switch and relay; Press one or more subregion selector switches and export one or more open and close instructions; The one MCU control circuit receives the opening and closing of relay corresponding on the instruction back control subregion circuit, makes corresponding audio signal channel output or ends, and master chip is connected with MIC input circuit circuit with selection circuit, data input circuit, radio reception circuit; Master chip is connected with display screen, power amplifier circuit; Data input circuit comprises USB and SD card interface circuit, and master chip broadcasts data or the sound source signal coding of USB, SD card, radio reception circuit, MIC, and display screen adopts high-definition liquid crystal to show; Chinese formula menu operation selects circuit to choose play content through button.
Shown in Figure 2, the broadcasting power amplifier mainly is made up of top voltage amplifier, the pushing grade circuit of centre and last power amplifier output-stage circuit.The load of audio-frequency power amplifier is a speaker circuit, and the input signal of power amplifier is from the signal of volume potentiometer moving plate.Voltage amplifier be voltage amplifier circuit according to the difference of machine to the sound output requirement, generally form by one-level or several grades of circuit.Voltage amplifier circuit mainly is used for input signal is carried out voltage amplification, so that make the signal voltage that is added to the promotion level reach certain degree.Though from the signal source circuit of front also is voltage output signal, their voltage amplitude is big inadequately, so voltage the voltage amplifier through is here further amplified.Voltage amplifier circuit is in the prime of audio-frequency power amplifier; Pushing grade circuit is the amplifier that is used for promoting the power amplifier output stage, and signal voltage and electric current are amplified synchronously, and it is operated under the large-signal magnifying state, and the amplifier tube quiescent current in this grade amplifier is bigger; The power amplifier output-stage circuit is the afterbody of whole power amplifier, is used for that signal is carried out electric current and amplifies.Voltage amplifier stage has carried out enough voltage amplifications with the promotion level to signal voltage, and output-stage circuit carries out electric current again and amplifies, to reach the purpose that signal power is amplified.
Shown in Figure 3, the basic composition of broadcasting preamplifier has input amplifying circuit, tone control circuit and source of sound to select circuit.The effect of input amplifying circuit is that the sound sound source signal is amplified to nominal level; The effect of tone control circuit is that the frequency characteristic of sound system can be controlled, to reach the tonequality of high-fidelity; Perhaps according to listening hearer's hobby, modify and beautify sound; It is to select required sound source signal to send into the back level that source of sound is selected the effect of circuit, closes other source of sound passages simultaneously.
Shown in Figure 4, the subregion selector mainly is made up of subregion selected on-off circuit, MCU control circuit, subregion output circuit etc.Audio signal by power amplifier output is imported through the input interface of subregion selector.Press one or more subregion selector switches and export one or more open and close instructions.The MCU control circuit receives instruction, and control subregion output circuit corresponding relays opening and closing make corresponding passage output or end audio signal.Wherein selected on-off circuit mainly cooperates interlock circuit to form by 16 key switches, and the corresponding subregion of button pushes button, and circuit sends an instruction; The MCU control circuit mainly cooperates electronic circuit to constitute by MCU, and MCU is the control centre of subregion selector; The subregion output circuit mainly cooperates interlock circuit to form by relay, a corresponding selector switch of relay and a delivery outlet, the opening and closing control signal output of relay.
Shown in Figure 5, monitor mainly selects circuit, MCU control circuit, monitoring output circuit, amplifying circuit, built-in loudspeaker etc. to constitute by 16 tunnel input ports, monitoring.Audio signal is passed through 16 road subregion selectors and being connected of 16 tunnel input ports of monitor is imported monitor.Press and monitor any listening key who selects circuit, send a level instruction to MCU.MCU accepts the control of instruction back and monitors the corresponding relay opening and closing of output circuit, makes audio signal output or ends.Through amplifying circuit signal is amplified behind the audio signal output, play through built-in loudspeaker or earphone again, accomplish monitoring passage.16 subregion passages of the corresponding subregion selector in 16 tunnel input ports of monitor.Monitor and select circuit mainly to be made up of 16 key switch mating circuit, corresponding one an of button is monitored passage.Circuit only allows by next button, promptly monitors a passage only.Whenever press arbitrary button, other buttons initiatively convert closed condition to.The MCU control circuit mainly cooperates electronic circuit to constitute by MCU.MCU is the control centre of monitor.Monitor output circuit and mainly form, a corresponding selector switch of relay and a delivery outlet, the opening and closing control signal output of relay by the relay mating circuit.Amplifying circuit is amplified to nominal level with audio signal, plays through built-in loudspeaker or earphone again.
Shown in Figure 6, power supply regularly the sequential device mainly by timer, control transformation switch, manually select circuit, MUC control circuit (i.e. the 2nd MCU control circuit) and power output circuit formation.Through the setting of timer being controlled whole timing sequential device startup or being closed.220V civil power incoming timing sequential device provides power supply.Regularly the sequential device is opened, when selecting control automatically, and will be according to MCU control circuit setting program by the level equipment sequence starting one by one of prime equipment, through 16 tunnel supply socket out-put supplies to the back.When closing power supply, then by back level equipment to prime equipment orderly close-down one by one.Select manually control, press arbitrarily manually selection key, with starting corresponding power supply output channel.It is that core cooperates electronic circuit etc. to form a power supply switch controller with the chip microprocessor that timer is one, can be with the switching of sky or week circulation and multi-period control timing device.The MCU control circuit mainly cooperates electronic circuit to constitute by MCU.MCU is regularly the control centre of sequential device.Open and close time-delay action in 1.5 seconds through every group of power supply of control of MCU shields to controlled equipment.Manually select circuit mainly to form, corresponding two output channels of each button by 8 key switch mating circuit.Power output circuit mainly is made up of the relay mating circuit, the corresponding delivery outlet of relay, and two delivery outlets are formed one group, the opening and closing control power supply output of relay.
Shown in Figure 7, intelligent public broadcasting device mainly is made up of master chip, selection circuit, display screen, memory chip, data input circuit, radio reception circuit, MIC input circuit, MCU control circuit, subregion circuit, sequence circuit, fire alarm warning circuit etc.Can memory chip broadcasted or be stored into to data such as USB, SD card, radio reception circuit, MIC or sound source signal through the master chip decoding.Display screen adopts the liquid crystal display of Chinese formula menu, and display operation directly perceived is revised playing program through button and band button toggle switch, and master chip is play the music or the tinkle of bells of storage chip according to program.The fire alarm warning circuit is given master chip through fire protection warning signal triggering outputs level signals, and all subregion passages of master chip control are play the warning music.Master chip is together integrated with MP3 decoding chip, MCU, interface control chip and operation control circuit.Master chip cooperates whole intelligent public broadcasting device of peripheral circuit control.The radio reception circuit cooperates peripheral circuit to form by MP3 radio reception module.
In shown in Figure 8, multi-functional player also comprises an alarm playing circuit, and circuit, control circuit are selected in the memory chip, the alarm that have different alarm music in comprising; Memory chip is connected with the power amplifier circuit; Alarm selects circuit to be connected with the control circuit circuit, and control circuit is connected with the memory chip circuit, and an alarm button in the circuit is selected in the corresponding alarm of the per song in the memory chip; Music is amplified through power amplifier, exports through the subregion circuit again.Power amplifier also is connected with a built-in horn circuit.
Multi-functional player selects for use the MP4 totally integrated chip to make master chip, can data such as USB, SD card, radio reception circuit, MIC or sound source signal be broadcasted through the master chip coding.Display screen adopts high-definition liquid crystal to show, Chinese formula menu operation selects circuit to choose play content through button.After having telephone access, cut off all audio frequency outputs automatically, the back of hanging up the telephone recovers to play automatically.Select common 32M memory chip for use, internal memory 5 first different alarm music, a button of circuit is selected in the corresponding alarm of per song, and music is amplified through power amplifier, exports to loud speaker through the subregion circuit again.Totally 5 road subregions, the button that the corresponding subregion of each subregion is selected.Press one or more subregion selector switches and export one or more open and close instructions.The MCU control circuit receives instruction, and control subregion output road corresponding relays opening and closing make corresponding passage output or end audio signal.
Master chip is the MP4 totally integrated chip; Can provide for H.264 (BP/MP/HP), MPEG2 (MP), MPEG4 (SP/ASP)/xvid (SP/AP), VC-1 (SP/MP/AP), WMV9 (SP/MP/AP) high definition encoded video and MPEG-1, H.263, the good compatibility of DivX (3.11/4/5/6), the common encoded video of M-JPEG (B); And smooth playing 1280P resolution contains the video format of 320 * 240,352 * 240,480 * 272,720 * 480,848 * 480,1024 * 768,1280 * 720 (720P), 1920 * 1080 (1080P), 1920 * 1280 all kinds of resolution such as (1280P) with popular encapsulation format of diverse network such as interior TS, AVI, MP4, MPG, MKV, DAT, VOB, WMV, ASF, PMP, RM, RMVB, MOV, M2V, QT, M2A.This MP4 totally integrated chip is when playing the 1080P film source, than the power consumption of other schemes saving 50%.For the film source of different resolution and code check, can carry the monitoring of total system power consumption, can intelligent decision can provide best system frequency, no matter play the said master chip of which kind of code check of which kind of form and can keep best power consumption all the time.Can realize the above high-speed transfer USB speed of 10MB/S, simultaneously, integrate second generation USB-OTG data expanded function, outstanding compatible big capacity portable hard drive, digital code player, storage card, USB flash disk, digital partner etc.
Claims (7)
1. the Public Address system of a charged words conferencing function; Comprise intelligent public medium broadcasting equipment, broadcasting preamplifier, broadcasting power amplifier and subregion selector; Intelligence public medium broadcasting equipment is connected with the broadcasting preamplifier circuit; The broadcasting preamplifier is connected with the broadcasting power amplifier circuit, and the broadcasting power amplifier is connected with the subregion selector circuit, and the subregion selector is connected with speaker circuit; The subregion selector also is connected with monitoring circuit; It is characterized in that: the Public Address system of said charged words conferencing function also comprises regularly sequential device of a multi-functional player and a power supply, and multi-functional player is provided with audio output interface and is connected with the broadcasting preamplifier circuit through data wire, power supply regularly the sequential device according to by prime equipment to after grade equipment sequence starting power supply one by one; When closing power supply then by back level orderly close-down power consumption equipment to prime
Said multi-functional player comprises videoconference circuit, power amplifier, subregion selection circuit, subregion circuit, a MCU control circuit, master chip, selection circuit, data input circuit, radio reception circuit, MIC input circuit, display screen and peripheral circuit; The videoconference circuit is connected with the power amplifier circuit; Power amplifier is connected with the subregion circuit, and subregion selects circuit to be connected with a MCU control circuit circuit, and a MCU control circuit is connected with the subregion circuit; The subregion circuit is connected with the power amplifier circuit; On the subregion circuit, be provided with subregion selector switch and relay, press one or more subregion selector switches and export one or more open and close instructions, a MCU control circuit receives the opening and closing of relay corresponding on the instruction back control subregion circuit; Make the output of corresponding audio signal channel or end; Master chip is connected with MIC input circuit circuit with selecting circuit, data input circuit, radio reception circuit, and master chip is connected with display screen, power amplifier circuit, and data input circuit comprises USB and SD card interface circuit; Master chip broadcasts data or the sound source signal coding of USB, SD card, radio reception circuit, MIC; Display screen adopts high-definition liquid crystal to show, Chinese formula menu operation selects circuit to choose play content through button.
2. the Public Address system of charged words conferencing function according to claim 1; It is characterized in that: said videoconference circuit comprises local telephone network interface, ringing circuit, conversation chip, connects and hang button, microphone and loudspeaker and peripheral circuit; Telephone signal is through the input of local telephone network interface, and background sound automaticallyes switch, and sends electric bell sound; Press to connect and hang button and converse; Press to connect again and hang button and break off conversation, background music recovers automatically, and the chip of wherein conversing includes transmit amplifier, the power amplifier of raising one's voice, attenuation control system, background noise supervisory control system, line loss compensate control, transmission and receiving attenuation device automatically.
3. the Public Address system of charged words conferencing function according to claim 2 is characterized in that: said conversation chip also is connected with the master chip signal.
4. the Public Address system of charged words conferencing function according to claim 2; It is characterized in that: said multi-functional player also comprises an alarm playing circuit; Circuit, control circuit are selected in the memory chip, the alarm that have different alarm music in comprising, and memory chip is connected with the power amplifier circuit, and alarm selects circuit to be connected with the control circuit circuit; Control circuit is connected with the memory chip circuit; An alarm button in the circuit is selected in the corresponding alarm of per song in the memory chip, and music is amplified through power amplifier, exports through the subregion circuit again.
5. the Public Address system of charged words conferencing function according to claim 2 is characterized in that: said power amplifier also is connected with a built-in horn circuit.
6. according to the Public Address system of the described charged words conferencing function of each claim of claim 1-5, it is characterized in that: said power supply regularly sequential device comprises timer, control transformation switch, manually selects circuit, the 2nd MCU control circuit and power output circuit, and the 2nd MCU control circuit is connected with power output circuit; The control transformation switch is connected with the 2nd MCU control circuit through manually selecting circuit, through to whole power supply of setting control of timer regularly the sequential device startup or close, the 220V civil power is imported power supply timing sequential device power supply is provided; When device unlatching of power supply timing sequential and selection are controlled automatically; Will be according to the 2nd MCU control circuit setting program by the level equipment sequence starting one by one of prime equipment, through the supply socket out-put supply, when closing power supply to the back; Then by back level equipment to prime device shutdown orderly close-down one by one; Select manually control, press arbitrarily manually selection key, with starting corresponding power supply output channel; It is the power supply switch controller that core cooperates electronic circuit to form with the chip microprocessor that said timer is one; Can be with the switching of circulation of sky or week and multi-period control timing device, said the 2nd MCU control circuit mainly cooperates electronic circuit to constitute by a MCU and MCU can control the open and close deferred action of every group of power supply, protects controlled equipment; Said manual selection circuit mainly is made up of the key switch mating circuit; Corresponding two output channels of each button, said power output circuit mainly is made up of the relay mating circuit, the corresponding delivery outlet of relay; Two delivery outlets are formed one group, through the opening and closing control power supply output of relay.
7. the Public Address system of charged words conferencing function according to claim 6 is characterized in that: said supply socket is 16 tunnel supply sockets, manually selects the key switch of circuit that 8 key switches are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120240631U CN202135135U (en) | 2011-07-10 | 2011-07-10 | Public broadcasting system with telephone conference function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120240631U CN202135135U (en) | 2011-07-10 | 2011-07-10 | Public broadcasting system with telephone conference function |
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| CN202135135U true CN202135135U (en) | 2012-02-01 |
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| CN201120240631U Expired - Fee Related CN202135135U (en) | 2011-07-10 | 2011-07-10 | Public broadcasting system with telephone conference function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112511251A (en) * | 2020-12-31 | 2021-03-16 | 卡斯木·尼牙孜 | Integrated intelligent broadcasting master control equipment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112511251A (en) * | 2020-12-31 | 2021-03-16 | 卡斯木·尼牙孜 | Integrated intelligent broadcasting master control equipment system |
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