CN203788297U - Broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification - Google Patents
Broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification Download PDFInfo
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- CN203788297U CN203788297U CN201420100927.8U CN201420100927U CN203788297U CN 203788297 U CN203788297 U CN 203788297U CN 201420100927 U CN201420100927 U CN 201420100927U CN 203788297 U CN203788297 U CN 203788297U
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- gprs
- audio
- power amplifier
- frequency modulation
- frequency power
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Abstract
Disclosed is a broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification. The broadcast machine belongs to the technical field of wireless broadcast, and specifically relates to a warning broadcast machine. The integrated broadcast machine comprises a receiving antenna, a GPRS communication module in connection with the antenna, a WIFI communication module in connection with the antenna, an audio playing module and a microphone. The GPRS and WIFI communication modules, the audio playing module and the microphone are respectively connected to different input ends of a switch. The output end of the switch is connected to a frequency modulation emission circuit and an audio power amplification circuit. The frequency modulation emission circuit is connected to an emission antenna. The audio power amplification circuit is connected to a loudspeaker. The GPRS or WIFI communication module, the audio power amplification module and the frequency modulation emission module are disposed in one cabinet to share the same power supply set, and connected with each other in a welding or plug-in manner. The integrated broadcast machine can be conveniently adjusted to an optimum broadcast state without operation of professional personnel, be convenient in maintenance, simple in wire connection, low in fault rate, and high in reliability.
Description
Technical field
GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier belongs to wireless broadcast technologies field, is specifically related to a kind of early warning speech amplifier.
Background technology
Because rural area modern communications is less-developed, and local communication is often used, and therefore traditional early warning broadcast is still widely used in rural area.For traditional early warning speech amplifier is matched with the existing communication technology and multimedia technology, a lot of separate units need to be fitted together.These separate units comprise remote telephone machine, source of sound, radio reception player, geocoding machine, FM transmitter, audio-frequency power amplifier etc.This early warning speech amplifier that numerous separate units are fitted together has following shortcoming:
The first, these professional equipments are carried out interconnected, be not only not easy to adjust to best broadcast state, and need professional to operate, be not easy to the maintenance of equipment;
The second, these professional equipments are carried out interconnected, connecting line very complicated not only, and all need to configure separately power supply owing to forming every equipment of early warning speech amplifier, cause open circuit, the rate of breakdown such as short circuit is high, reliability is low.
Yet in present stage, also there is no the speech amplifier that traditional broadcast function can be matched with multimedia technology with Novel Communication technology.
Utility model content
In order to address the above problem, the utility model has designed GPRS reception, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, and it is convenient that this integrated speech amplifier is not only adjusted to best broadcast state, without professional's operation, be convenient to safeguard, and line is simple, rate of breakdown is low, and reliability is high.
The purpose of this utility model is achieved in that
GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, comprise reception antenna, the GPRS, the WIFI communication module that connect antenna, audio playing module, microphone, described GPRS, WIFI communication module, audio playing module and microphone are connected respectively to the different inputs of switch, the output of switch connects modulating emission circuit and audio power amplifier circuit simultaneously, and described modulating emission circuit connects transmitting antenna, and described audio power amplifier circuit connects loud speaker; Described GPRS or WIFI communication module, audio frequency power amplifier module and modulating emission circuit are assemblied in same cabinet, share a set of power supply, adopt the mode of welding or connector to interconnect.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described GPRS, WIFI communication module are that GSM, GPRS are or/and WIFI network signal receiving chip.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described audio playing module is FM radio, MP3, SD card, USB flash disk player.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described switch is digital switch CD4051B.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described modulating emission circuit is C1971.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described audio power amplifier circuit is TDA7388.
The utility model GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, at an equipment, comprise reception antenna, the GPRS, the WIFI communication module that connect antenna, audio playing module, microphone, described GPRS, WIFI communication module, audio playing module and microphone are connected respectively to the different inputs of switch, the output of switch connects modulating emission circuit and audio power amplifier circuit simultaneously, described modulating emission circuit connects transmitting antenna, and described audio power amplifier circuit connects loud speaker.This design, not only make the utility model patent there is the function of the existing speech amplifier of early warning speech amplifier simultaneously, and compared with the existing technology, only relying on hardware to connect, do not need under the condition of software programming, also have and not only adjust to best broadcast state conveniently, without professional, operate, be convenient to safeguard, and line is simple, rate of breakdown is low, the beneficial effect that reliability is high.
Accompanying drawing explanation
Fig. 1 is that the utility model GPRS receives, frequency modulation is launched and the circuit connection diagram of the integrated speech amplifier of audio frequency power amplifier.
In figure: 1 reception antenna, 2GPRS, WIFI communication module, 3 audio playing module, 4 microphones, 5 switches, 6 modulating emission circuits, 7 audio power amplifier circuits, 8 transmitting antennas, 9 loud speakers.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Specific embodiment one
The GPRS of the present embodiment receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and electrical block diagram as shown in Figure 1.This GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier
Comprise reception antenna 1, the GPRS, the WIFI communication module 2 that connect antenna 1, audio playing module 3, microphone 4, described GPRS, WIFI communication module 2, audio playing module 3 and microphone 4 are connected respectively to the different inputs of switch 5, and the output of switch 5 connects modulating emission circuit 6 and audio power amplifier circuit 7 simultaneously, described modulating emission circuit 6 connects transmitting antenna 8, and described audio power amplifier circuit 7 connects loud speaker 9; Described GPRS or WIFI communication module 2, audio frequency power amplifier module 7 and modulating emission circuit 6 are assemblied in same cabinet, share a set of power supply, adopt the mode of welding or connector to interconnect.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described GPRS, WIFI communication module 2 are GSM, GPRS or WIFI network signal receiving chip.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described audio playing module 3 is FM radio, MP3, SD card, USB flash disk player.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described switch 5 is digital switch CD4051B.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described modulating emission circuit 6 is C1971.
Above-mentioned GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and described audio power amplifier circuit 7 is TDA7388.
The GPRS of above embodiment receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, and operation principle is:
Public wireless network signal is received and is delivered to GPRS, WIFI communication module 2 by reception antenna 1, and after its inner integrated software is processed, output audio signal is to switch 5; Audio playing module output audio signal is to switch 5; Microphone output audio signal is to switch 5; Above-mentioned signal, after switch 5 is selected to switch, is delivered to modulating emission circuit 6 and audio power amplifier circuit 7, and wherein, the signal that modulating emission circuit 6 receives is launched by transmitting antenna 8, and the signal that audio power amplifier circuit 7 receives is launched by loud speaker 9.
Complete machine can be accepted public wireless network remote control and broadcast information, by answering in or beyond machine, cylinder is broadcast broadcast announcement, above-mentioned sound source signal amplifies by plug into loud speaker broadcast of audio frequency power amplifier, and can sound source signal be sent to by radiating circuit to broadcast receiver or the amplifier of networking.
The utility model GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, owing to forming each part or the module of this speech amplifier, all can be bought directly from the market, and be non-programmable control chip, therefore, these parts or the direct connection of module can be realized to its technical purpose, without coding, also without cooperation, realize the method for its technical purpose.
This GPRS receives, frequency modulation is launched and the integrated speech amplifier of audio frequency power amplifier, compared with the existing technology, only relying on hardware to connect, do not need under the condition of software programming, have and not only adjust to best broadcast state conveniently, without professional's operation, be convenient to safeguard, and line is simple, rate of breakdown is low, the beneficial effect that reliability is high.
Claims (6)
1. a GPRS receives, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, it is characterized in that, comprise reception antenna (1), the GPRS that connects antenna (1), WIFI communication module (2), audio playing module (3), microphone (4), described GPRS or WIFI communication module (2), audio playing module (3) and microphone (4) are connected respectively to the different inputs of switch (5), the output of switch (5) connects modulating emission circuit (6) and audio power amplifier circuit (7) simultaneously, described modulating emission circuit (6) connects transmitting antenna (8), described audio power amplifier circuit (7) connects loud speaker (9), described GPRS or WIFI communication module (2), audio frequency power amplifier module (7) and modulating emission circuit (6) are assemblied in same cabinet, share a set of power supply, adopt the mode of welding or connector to interconnect.
2. GPRS reception according to claim 1, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, is characterized in that, described GPRS, WIFI communication module (2) are that GSM, GPRS are or/and WIFI network signal receiving chip.
3. GPRS reception according to claim 1, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, is characterized in that, described audio playing module (3) is FM radio, MP3, SD card, USB flash disk player.
4. GPRS reception according to claim 1, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, is characterized in that, described switch (5) is digital switch CD4051B.
5. GPRS reception according to claim 1, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, is characterized in that, described modulating emission circuit (6) is C1971.
6. GPRS reception according to claim 1, frequency modulation transmitting and the integrated speech amplifier of audio frequency power amplifier, is characterized in that, described audio power amplifier circuit (7) is TDA7388.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100927.8U CN203788297U (en) | 2014-03-07 | 2014-03-07 | Broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100927.8U CN203788297U (en) | 2014-03-07 | 2014-03-07 | Broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203788297U true CN203788297U (en) | 2014-08-20 |
Family
ID=51324448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420100927.8U Expired - Fee Related CN203788297U (en) | 2014-03-07 | 2014-03-07 | Broadcast machine integrated with GPRS receiving, frequency modulation emission and audio frequency power amplification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203788297U (en) |
-
2014
- 2014-03-07 CN CN201420100927.8U patent/CN203788297U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20200307 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |