CN103427923A - Control unit of emergency broadcast - Google Patents
Control unit of emergency broadcast Download PDFInfo
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- CN103427923A CN103427923A CN2013103567917A CN201310356791A CN103427923A CN 103427923 A CN103427923 A CN 103427923A CN 2013103567917 A CN2013103567917 A CN 2013103567917A CN 201310356791 A CN201310356791 A CN 201310356791A CN 103427923 A CN103427923 A CN 103427923A
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Abstract
The invention provides a control unit of an emergency broadcast. The control unit comprises a microphone module, a line voice frequency module and a power source module, wherein an microphone voice frequency message source input in the microphone module is connected with input ends of a volume adjustment module and a message source selection module through a voice frequency amplification and voltage limiting control module, three line voice frequency message source inputs in the line voice frequency module are connected with an input end of the message source selection module through an operational amplifier and the volume adjustment module, an output end of the message source selection module is respectively connected with input ends of a plurality of marshalling selection modules, and an output end of each marshalling selection module forms an emergency broadcast to be output by means of the operational amplifier. The control unit has the advantages that message source selection can be performed on microphone voice frequency input and line voice frequency input through the message source selection module, selected message sources are broadcasted to selected marshalling regions through the marshalling selection modules to achieve control of the emergency broadcast; and the control unit has the advantages of being simple in circuit design, convenient to operate, low in manufacture cost, capable of facilitating quantization production, and the like.
Description
Technical field
The invention belongs to the voice broadcast service field, especially relate to a kind of emergent broadcast control unit.
Background technology
Broadcasting for train, as a kind of special communication media bearing be passenger's service, policy propaganda, burst constantly commander speedily carry out rescue work, emergency evacuation, accident treatment with the task such as communicate by letter in time.Tradition emergent broadcast control appliance is backward in technique, compatible, autgmentability is not good, and circuit, structure are too complicated, using method complexity, and unreliable, exist install complicated, safeguard inconvenience, failure rate high-technology problem.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of simple in structure, easy to operate emergent broadcast control unit, especially is suitable in railway network type broadcast system the control to emergent broadcast.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of emergent broadcast control unit comprises microphone module, circuit audio-frequency module, power module, volume adjusting module, information source selection module and marshalling selection module;
Described microphone module comprises the input of two-way microphone audio frequency, described two-way microphone audio frequency input is amplified and presses the limit control module to be connected with the input of described volume adjusting module by audio frequency after merging into a road microphone audio sources input by adder, and the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source;
Described circuit audio-frequency module comprises the input of two-way circuit audio frequency, described two-way circuit audio frequency input is by six lotus flower socket accesses, two-way circuit audio frequency input on described every pair of lotus flower socket is connected with the input of described volume adjusting module by operational amplifier after merging into a route road audio sources input after adder, and the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source;
Described microphone module selects the output of module with a plurality of marshallings, to select the input of module to be connected respectively with the information source in the circuit audio-frequency module, described each marshalling selects the output of module by forming emergent broadcast output after operational amplifier, and the output signal of described microphone module and the operational amplifier of selecting module to be connected with information source in the circuit audio-frequency module is normal broadcast output audio;
Further, in described microphone module, the output of operational amplifier also is connected with microphone volume indicating circuit.
Further, described microphone module selects the output of module also to be connected with broadcast volume indicating circuit with the information source in the circuit audio-frequency module.
Further, described volume adjusting module is volume control potentiometer.
Further, described circuit audio-frequency module is one or more.
Further, it is 1 or a plurality of that module is selected in described marshalling, can expand according to actual needs.
Further, described power module comprises the AC/DC module, and the output of described AC/DC module is connected with the input of three terminal regulator, and the output of described three terminal regulator is connected with the input of power indicating circuit.
Further, described three terminal regulator is L7805 and LM7905.
Further, the input of described AC/DC module is connected with insurance.
Advantage and good effect that the present invention has are: owing to adopting technique scheme, by information source select module can the microphone audio frequency input and the input of circuit audio frequency carry out the selection of information source, by marshalling, select module to play to the marshalling zone of choosing selected information source, complete the control of emergent broadcast; There is circuit design simple, easy and simple to handle, low cost of manufacture, be beneficial to advantages such as quantizing production.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of emergent broadcast control unit of the present invention.
Embodiment
As shown in Figure 1, a kind of emergent broadcast control unit of the present invention, comprise microphone module, circuit audio-frequency module, power module, volume adjusting module, information source selection module and marshalling selection module;
Described microphone module comprises the input of two-way microphone audio frequency, described two-way microphone audio frequency input is amplified and presses the limit control module to be connected with the input of described volume adjusting module by audio frequency after merging into a road microphone audio sources input by adder, the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source, and the output of described operational amplifier also is connected with microphone volume indicating circuit;
Described circuit audio-frequency module comprises the input of two-way circuit audio frequency, described two-way circuit audio frequency input is by six lotus flower socket accesses, two-way circuit audio frequency input on described every pair of lotus flower socket is connected with the input of described volume adjusting module by operational amplifier after merging into a route road audio sources input after adder, the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source, and described circuit audio-frequency module is one or more;
Described microphone module selects the output of module with broadcast volume indicating circuit, with a plurality of marshallings, to select the input of module to be connected respectively with the information source in the circuit audio-frequency module, described each marshalling selects the output of module by forming emergent broadcast output after operational amplifier, the output signal of described microphone module and the operational amplifier of selecting module to be connected with information source in the circuit audio-frequency module is normal broadcast output audio, volume adjusting module in described microphone module and circuit audio-frequency module is volume control potentiometer, it is 1 or a plurality of that module is selected in described marshalling, can expand according to actual needs.
Described power module comprises the AC/DC module, the input of described AC/DC module is connected with insurance, output is connected with the input of three terminal regulator, and the output of described three terminal regulator is connected with the input of power indicating circuit, and described three terminal regulator is L7805 and LM7905.
The course of work of this example: during emergent broadcast, the input of two-way microphone audio frequency is amplified and presses limit control module and volume adjusting module to enter information source and select module by audio frequency after being merged into a road microphone audio sources input by adder, six route road audio frequency inputs are by six lotus flower socket accesses, two-way circuit audio frequency input on the every pair of lotus flower socket is by merging into a route road audio sources input after adder, therefore audio sources input in three-route road is selected module by entering information source after operational amplifier and volume adjusting module, four information sources select module to be selected four information sources of input, select STC89C58RD+ Single-chip Controlling relay to be selected information source, synchronization, can only select 1 tunnel information source, select in this embodiment 6 marshallings to select module to select the output signal of module to be organized into groups to information source, synchronization, can select 1 road or multichannel marshalling, the corresponding 1 road emergent broadcast output of module is selected in each marshalling, each is organized into groups corresponding service area (or power amplifier) and determines by the mode of line at the broadcast rack, be provided with 4 tunnels in circuit and normally broadcast output channel, corresponding to 4 road audio frequency inputs (i.e. 1 road microphone and 3 route roads), audio frequency output while normally moving for system, no matter whether equipment is in emergency rating, 4 road audio frequency inputs are normally exported all in connected state with 4 tunnels, without carrying out information source and marshalling, select normally to export broadcast audio, be provided with microphone and broadcast volume indicating circuit in circuit, indicator light when the input of microphone audio frequency is arranged in microphone volume indicating circuit is lighted, indicator light when carrying out information source selection and the input of corresponding information source audio frequency in broadcast volume indicating circuit is lighted.
Power module is selected the great safe power module of benefit, by the alternating current 220V power supply of input, by the AC/DC module converts, is ± 12V then to select three terminal regulator L7805 and be converted to ± 5V of LM7905 general ± 12V working power.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (9)
1. an emergent broadcast control unit, is characterized in that: comprise microphone module, circuit audio-frequency module, power module, volume adjusting module, information source selection module and marshalling selection module;
Described microphone module comprises the input of two-way microphone audio frequency, described two-way microphone audio frequency input is amplified and presses the limit control module to be connected with the input of described volume adjusting module by audio frequency after merging into a road microphone audio sources input by adder, and the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source;
Described circuit audio-frequency module comprises the input of two-way circuit audio frequency, described two-way circuit audio frequency input is by merging into a route road audio sources input after adder, described circuit audio sources input is connected with the input of described volume adjusting module by operational amplifier, and the output of described volume adjusting module selects the input of module to be connected by operational amplifier and described information source;
Described microphone module selects the output of module with a plurality of marshallings, to select the input of module to be connected respectively with the information source in the circuit audio-frequency module, described each marshalling selects the output of module by forming emergent broadcast output after operational amplifier, and the output signal of described microphone module and the operational amplifier of selecting module to be connected with information source in the circuit audio-frequency module is normal broadcast output audio.
2. a kind of emergent broadcast control unit according to claim 1, it is characterized in that: in described microphone module, the output of operational amplifier also is connected with microphone volume indicating circuit.
3. a kind of emergent broadcast control unit according to claim 1 is characterized in that: described microphone module selects the output of module also to be connected with broadcast volume indicating circuit with the information source in the circuit audio-frequency module.
4. a kind of emergent broadcast control unit according to claim 1, it is characterized in that: described volume adjusting module is volume control potentiometer.
5. a kind of emergent broadcast control unit according to claim 1 is characterized in that: described circuit audio-frequency module is one or more.
6. a kind of emergent broadcast control unit according to claim 1 is characterized in that: it is 1 or a plurality of that module is selected in described marshalling.
7. a kind of emergent broadcast control unit according to claim 1, it is characterized in that: described power module comprises the AC/DC module, the output of described AC/DC module is connected with the input of three terminal regulator, and the output of described three terminal regulator is connected with the input of power indicating circuit.
8. a kind of emergent broadcast control unit according to claim 7, it is characterized in that: described three terminal regulator is L7805 and LM7905.
9. a kind of emergent broadcast control unit according to claim 7 is characterized in that: the input of described AC/DC module is connected with insurance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103567917A CN103427923A (en) | 2013-08-15 | 2013-08-15 | Control unit of emergency broadcast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103567917A CN103427923A (en) | 2013-08-15 | 2013-08-15 | Control unit of emergency broadcast |
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| CN103427923A true CN103427923A (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013103567917A Pending CN103427923A (en) | 2013-08-15 | 2013-08-15 | Control unit of emergency broadcast |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162483A (en) * | 2015-03-12 | 2016-11-23 | 中国人民解放军装甲兵工程学院 | A kind of tank radio set audio accessory detection device |
| CN111739496A (en) * | 2020-06-24 | 2020-10-02 | 腾讯音乐娱乐科技（深圳）有限公司 | Audio processing method, device and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733757Y (en) * | 2004-07-01 | 2005-10-12 | 王文吉 | Full-digital intelligentized train and public broadcasting machine |
| CN101741493A (en) * | 2008-11-13 | 2010-06-16 | 上海鸣啸实业发展有限公司 | IP platform-based on-vehicle integrated information system |
| CN202856749U (en) * | 2012-09-28 | 2013-04-03 | 天津市北海通信技术有限公司 | Main control panel of train broadcasting machine |
| CN202856747U (en) * | 2012-09-28 | 2013-04-03 | 天津市北海通信技术有限公司 | Digital train broadcasting machine |
| CN203102509U (en) * | 2013-01-14 | 2013-07-31 | 北京地铁车辆装备有限公司 | Fire alarm simulation debugging system based on train control and monitoring system |
-
2013
- 2013-08-15 CN CN2013103567917A patent/CN103427923A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2733757Y (en) * | 2004-07-01 | 2005-10-12 | 王文吉 | Full-digital intelligentized train and public broadcasting machine |
| CN101741493A (en) * | 2008-11-13 | 2010-06-16 | 上海鸣啸实业发展有限公司 | IP platform-based on-vehicle integrated information system |
| CN202856749U (en) * | 2012-09-28 | 2013-04-03 | 天津市北海通信技术有限公司 | Main control panel of train broadcasting machine |
| CN202856747U (en) * | 2012-09-28 | 2013-04-03 | 天津市北海通信技术有限公司 | Digital train broadcasting machine |
| CN203102509U (en) * | 2013-01-14 | 2013-07-31 | 北京地铁车辆装备有限公司 | Fire alarm simulation debugging system based on train control and monitoring system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162483A (en) * | 2015-03-12 | 2016-11-23 | 中国人民解放军装甲兵工程学院 | A kind of tank radio set audio accessory detection device |
| CN111739496A (en) * | 2020-06-24 | 2020-10-02 | 腾讯音乐娱乐科技（深圳）有限公司 | Audio processing method, device and storage medium |
| CN111739496B (en) * | 2020-06-24 | 2023-06-23 | 腾讯音乐娱乐科技（深圳）有限公司 | Audio processing method, device and storage medium |
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Application publication date: 20131204 |