CN2938667Y - Power amplification controller for fire emergency broadcast - Google Patents
Power amplification controller for fire emergency broadcast Download PDFInfo
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- CN2938667Y CN2938667Y CN 200620044682 CN200620044682U CN2938667Y CN 2938667 Y CN2938667 Y CN 2938667Y CN 200620044682 CN200620044682 CN 200620044682 CN 200620044682 U CN200620044682 U CN 200620044682U CN 2938667 Y CN2938667 Y CN 2938667Y
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- power amplifier
- signal processing
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Abstract
The utility model relates to a power amplification controller for fire emergency broadcasting. The controller is characterized in that the input terminal of a power amplification unit is connected to the output terminal of a signal processing unit, the input terminal of the signal processing unit is connected to the output terminal of a microphone amplification unit, the input terminal of the signal processing unit is connected to the output terminal of the microphone amplification unit, the input terminal of the microphone amplification unit is connected to the signal input terminal of the microphone, the input terminal of the signal processing unit is connected to a CD signal input terminal, the input terminal of the signal processing unit is connected to the input terminal of a circuit, the input terminal of the signal processing unit is connected to the output terminal of an electronic recording/playback unit, the electronic recording/playback unit is connected to the bus, the input terminal of a sampling input unit is connected to the power amplification unit, the input terminal of the sampling input unit is connected to the power supply, the sampling input unit is connected to the bus, and the power amplification control unit is connected to the bus. The utility model can control, detect fire emergency broadcasting and give an alarm, and has the advantages of excellent performance and high versatility.
Description
Technical field:
The utility model relates to electronic applications, is specifically related to a kind of power amplifier controller that is used for fire-fighting emergent broadcasting.
Background technology:
In the public broadcasting field, it is just formation in nearly ten years that fire-fighting emergent is broadcasted, and market prospects are good.In original emergent broadcasting equipment, owing to equipment performance is not proposed specific requirement in the former relevant criterion, kind, the specifications and characteristics of similar products at home and abroad are uneven, and homogeneity of product is poor, and product can't be general.
Summary of the invention:
The purpose of this utility model is to provide a kind of power amplifier controller that is used for fire-fighting emergent broadcasting, and enough this power amplifier controllers of energy are broadcasted fire-fighting emergent and controlled, detect and report to the police.
To achieve these goals, the technical solution of the utility model is as follows: a kind of power amplifier controller that is used for fire-fighting emergent broadcasting, comprise power supply, power amplifier unit, the output of power amplifier unit is connected with loud speaker, the input that it is characterized in that power amplifier unit is connected with the output of signal processing unit, the first input end of signal processing unit is connected with first output of microphone amplifying unit, second input of signal processing unit is connected with second output of microphone amplifying unit, the first input end of microphone amplifying unit is connected with the first microphone signal input, second input of microphone amplifying unit is connected with the second microphone signal input, the 3rd input of signal processing unit is connected with the CD signal input part, the four-input terminal of signal processing unit is connected with line input, the 5th input of signal processing unit is connected with the output of electronics recording playback sound unit, electronics recording playback sound unit is connected with bus, the first input end of sampling input unit is connected with power amplifier unit, second input of sampling input unit is connected with power supply, the sampling input unit is connected with bus, and the power amplifier control unit is connected with bus.The power amplifier control unit is connected with PC, also is connected with the Keyboard Control unit, and the Keyboard Control unit is connected with display unit with button.
The utility model can be realized fire-fighting emergent broadcasting is controlled, detected and reports to the police, and has that performance is good, the advantage of universal strong.
Description of drawings:
Fig. 1 is a circuit block diagram of the present utility model
Fig. 2 is sampling input-cell circuitry figure
Fig. 3 is a microphone amplifying unit circuit diagram
Fig. 4 is signal processing circuit unit figure
Fig. 5 is electronics recording playback sound element circuit figure
Fig. 6 is power amplifier control unit circuit figure
Fig. 7 is Keyboard Control element circuit figure
Fig. 8 is button and display unit circuit figure
Fig. 9 is a power circuit diagram
Embodiment:
Below in conjunction with drawings and Examples the utility model is elaborated.
A kind of power amplifier controller that is used for fire-fighting emergent broadcasting, comprise power supply 18, power amplifier unit 19, the output of power amplifier unit 19 is connected with loud speaker 20, the input that it is characterized in that power amplifier unit 19 is connected with the output of signal processing unit 10, the first input end of signal processing unit 10 is connected with first output of microphone amplifying unit 7, second input of signal processing unit 10 is connected with second output of microphone amplifying unit 7, the first input end of microphone amplifying unit 7 is connected with the first microphone signal input MIC1, second input of microphone amplifying unit 7 is connected with the second microphone signal input MIC2, the 3rd input of signal processing unit 10 is connected with CD signal input part CD, the four-input terminal of signal processing unit 10 is connected with line input LINE, the 5th input of signal processing unit 10 is connected with the output of electronics recording playback sound unit 14, electronics recording playback sound unit 14 is connected with bus 21, the first input end of sampling input unit 16 is connected with power amplifier unit 19, second input of sampling input unit 16 is connected with power supply 18, sampling input unit 16 is connected with bus 21, and power amplifier control unit 15 also is connected with bus 21.Power amplifier control unit 15 also can be connected with PC 22 by the RS485 interface, is connected with Keyboard Control unit 17, and Keyboard Control unit 17 is connected with display unit 26 with button.
Wherein the circuit of power amplifier unit 19 is: the output of signal processing unit 10 is connected with the input of pre-amplifier unit 23, the output of pre-amplifier unit 23 is connected with the input of power amplification circuit 24, the output of power amplification circuit 24 is connected with output transformer 25, the output of output transformer 25 is connected with loud speaker 20, and output transformer 25 also is connected with the input of sampling input unit 16.
Wherein the circuit of signal processing unit 10 is: first first input end that mixes discharge road 9 is connected with CD signal input part CD, first second input that mixes discharge road 9 is connected with line input LINE, the 3rd input that first output and second that mixes discharge road 9 mixes discharge road 8 is connected, second first input end that mixes discharge road 8 and microphone amplifying unit 7 first output be connected, second second input that mixes discharge road 8 is connected with second output of microphone amplifying unit 7, second four-input terminal that mixes discharge road 8 is connected with the output of electronics recording playback sound unit 14, second output that mixes discharge road 8 is connected with an end of volume potentiometer 11, the other end ground connection of volume potentiometer 11, the adjustable side of volume potentiometer 11 is connected with ultrasonic generator 13, the adjustable side of volume potentiometer 11 also is connected with the input of balance output amplifying unit 12, and the output of balance output amplifying unit 12 is connected with the input of power amplifier unit 19.
The circuit of sampling input unit 16 is: the input of sample circuit 1 is connected with the output transformer 25 of power amplifier unit 19, the output of sample circuit 1 is connected with the input of transducer 2, the output of transducer 2 is connected with the first input end of analog switch 5, second input of analog switch 5 is connected with the output of microphone output unit 4, the 3rd input of analog switch 5 is connected with the output of main power source sample circuit 3, the input of main power source sample circuit 3 is connected with power supply 18, the output of analog switch 5 is connected with the input of A/D convertor circuit 6, and A/D convertor circuit 6 also is connected with bus 21.
By software programming, the operation control platform that the windows interface of PC 22 can provide function control, power amplifier parameter and parameter setting and serial communication transceive data to show can be set, detect and report to the police power amplifier main power source bound voltage; Power amplifier audio frequency output voltage limit, upper current limit, power upper limit are set detection alarm; And can carry out mike level and detect.
During interface operation, the first step is carried out " parameter setting ", and power amplifier main power source bound voltage is arranged in AC220V ± 10% (198-242V) scope; Audio frequency output voltage, electric current, power upper limit are provided with voluntarily by the user, and the value of setting shows on " power amplifier parameter " interface and reports to the police.Volume is regulated by manually and two kinds of methods are set, and manually by panel VOLUME key operation up and down, is provided with by the interface volume and rises and the decline key operation.
In Fig. 2 circuit of sampling input 16, the sampling of AC220V AC power is provided by the 5V winding of power transformer in the power supply 18; After output transformer 25 samplings of power amplifier unit 19, behind two audio frequency transformer coupling circuits, export sampling voltage (V) and electric current (I) signal respectively, become effective value through waveform transformation, with the main power source sampled signal, select an analog switch to convert digital signal to through four and export to ADC.
Two-way microphone input MIC1 and MIC2 regulate by potentiometer respectively through the preposition amplification of amplifier, amplify back output by the secondary amplifier.
Electronics recording playback sound unit 14 stores special chip by two 15S to be formed, and sees Fig. 5.Typing warning clause or sound mix back output in advance, by single-chip microcomputer and electronic switch control.Fig. 4 is a signal processing unit, mixing is from the output of electronics recording playback sound unit 14, the two-way microphone output of microphone amplifying unit 7, CD and circuit mix output, after amplifying, regulate by volume potentiometer 11, after ultrasonic generator 13 output mixed, the outlet line balanced signal was got one road input of delivering to power amplifier unit 19 simultaneously.
Fig. 7 is Keyboard Control unit 17, is made up of inverter, latch, alarm and single-chip microcomputer.Fig. 8 is button and display unit 26.Power supply 18 is made up of 4 groups of independent power supplys.The start Alternating Current Power Supply is converted by relay.Complete machine is contained in the standard PC case, and operation part is positioned at front panel, and interface and terminal part are positioned at rear board.
Claims (6)
1, a kind of power amplifier controller that is used for fire-fighting emergent broadcasting, comprise power supply, power amplifier unit, the output of power amplifier unit is connected with loud speaker, the input that it is characterized in that power amplifier unit is connected with the output of signal processing unit, the first input end of signal processing unit is connected with first output of microphone amplifying unit, second input of signal processing unit is connected with second output of microphone amplifying unit, the first input end of microphone amplifying unit is connected with the first microphone signal input, second input of microphone amplifying unit is connected with the second microphone signal input, the 3rd input of signal processing unit is connected with the CD signal input part, the four-input terminal of signal processing unit is connected with line input, the 5th input of signal processing unit is connected with the output of electronics recording playback sound unit, electronics recording playback sound unit is connected with bus, the first input end of sampling input unit is connected with power amplifier unit, second input of sampling input unit is connected with power supply, the sampling input unit is connected with bus, and the power amplifier control unit is connected with bus.
2, by the described power amplifier controller that is used for fire-fighting emergent broadcasting of claim 1, it is characterized in that the power amplifier control unit also can be connected with PC.
3, by the described power amplifier controller that is used for fire-fighting emergent broadcasting of claim 1, it is characterized in that the power amplifier control unit is connected with the Keyboard Control unit, the Keyboard Control unit is connected with display unit with button.
4, by the described power amplifier controller that is used for fire-fighting emergent broadcasting of claim 1, the circuit that it is characterized in that power amplifier unit is: the output of signal processing unit is connected with the input of pre-amplifier unit, the output of pre-amplifier unit is connected with the input of power amplification circuit, the output of power amplification circuit is connected with output transformer, the output of output transformer is connected with loud speaker, and output transformer also is connected with the input of sampling input unit.
5, by the described power amplifier controller that is used for fire-fighting emergent broadcasting of claim 1, the circuit that it is characterized in that signal processing unit is: first first input end that mixes the discharge road is connected with the CD signal input part, first second input that mixes the discharge road is connected with line input, the 3rd input that first output and second that mixes the discharge road mixes the discharge road is connected, second first input end that mixes the discharge road and microphone amplifying unit first output be connected, second second input that mixes the discharge road is connected with second output of microphone amplifying unit, second four-input terminal that mixes the discharge road is connected with the output of electronics recording playback sound unit, second output that mixes the discharge road is connected with an end of volume potentiometer, the other end ground connection of volume potentiometer, the adjustable side of volume potentiometer is connected with ultrasonic generator, the adjustable side of volume potentiometer also is connected with the input of balance output amplifying unit, and the output of balance output amplifying unit is connected with the input of power amplifier unit.
6, by the described power amplifier controller that is used for fire-fighting emergent broadcasting of claim 1, the circuit of input unit of it is characterized in that sampling is: the input of sample circuit is connected with the output transformer of power amplifier unit, the output of sample circuit is connected with the input of transducer, the output of transducer is connected with the first input end of analog switch, second input of analog switch is connected with the output of microphone output unit, the 3rd input of analog switch is connected with the output of main power source sample circuit, the input of main power source sample circuit is connected with power supply, the output of analog switch is connected with the input of A/D convertor circuit, and A/D convertor circuit also is connected with bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044682 CN2938667Y (en) | 2006-08-09 | 2006-08-09 | Power amplification controller for fire emergency broadcast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044682 CN2938667Y (en) | 2006-08-09 | 2006-08-09 | Power amplification controller for fire emergency broadcast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938667Y true CN2938667Y (en) | 2007-08-22 |
Family
ID=38362695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044682 Expired - Fee Related CN2938667Y (en) | 2006-08-09 | 2006-08-09 | Power amplification controller for fire emergency broadcast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938667Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103905957A (en) * | 2014-04-02 | 2014-07-02 | 天津理工大学 | Multifunctional amplifying and warning system |
| CN105487453A (en) * | 2015-12-31 | 2016-04-13 | 天津市北海通信技术有限公司 | Fire-fighting emergency broadcast output controller |
-
2006
- 2006-08-09 CN CN 200620044682 patent/CN2938667Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103905957A (en) * | 2014-04-02 | 2014-07-02 | 天津理工大学 | Multifunctional amplifying and warning system |
| CN105487453A (en) * | 2015-12-31 | 2016-04-13 | 天津市北海通信技术有限公司 | Fire-fighting emergency broadcast output controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |