CN208424380U - A kind of sending device of medium wave channel emergent broadcast signalling - Google Patents
A kind of sending device of medium wave channel emergent broadcast signalling Download PDFInfo
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- CN208424380U CN208424380U CN201821290750.7U CN201821290750U CN208424380U CN 208424380 U CN208424380 U CN 208424380U CN 201821290750 U CN201821290750 U CN 201821290750U CN 208424380 U CN208424380 U CN 208424380U
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Abstract
The utility model discloses a kind of sending devices of medium wave channel emergent broadcast signalling, comprising: audio data card feeding-discharging, rear panel, core processing board, front panel and power module, the audio data card feeding-discharging connection receives data path and sends data path；The rear panel is equipped with analog audio input interface, analogue audio frequency output interface, input information source channel digital audio input interface, digital audio output interface and Ethernet interface, a kind of sending device of medium wave channel emergent broadcast signalling is reasonable in design, the innovation for realizing a kind of medium wave channel emergent broadcast signalling in medium wave broadcast system by image watermarking loading technique is worth predicting the popularization of release information field in geological disaster and use.
Description
Technical field
The utility model relates to broadcast casting field, the transmission of specifically a kind of medium wave channel emergent broadcast signalling is set
It is standby.
Background technique
With the development of radio and television services and to the personal safety in country to the inhabitation resident of geological disaster area
And early warning system is paid much attention to, all kinds of broadcasting agencies intercut the early warning of geological disaster in a variety of transmission modes of radio and television
Information plays provide the warning hair that disaster is sent out in advance in many ways for mountain area and backland inhabitation resident in practical applications
Cloth information.Current warning information mainly passes through the TS circulation road of the channel RDS of frequency modulation frequency range, satellite and digital terrestrial television
The data of digital audio broadcasting broadcast channel, not yet there is specific technical standard and reality in medium wave broadcast system
Apply scheme.
Since medium wave broadcast system bandwidth is very narrow, the data transmission channel also not assisted, so needing in medium wave audio
Emergent broadcast signaling is embedded into medium wave audio broadcasting using hiding information technology in broadcast, in the base for being not take up extra bandwidth
On plinth, reach publication index identical with other emergent broadcast signaling transmission schemes.
The utility model is intended to provide a kind of sending device of medium wave channel emergent broadcast signalling.
Utility model content
The purpose of this utility model is to provide a kind of sending devices of medium wave channel emergent broadcast signalling, to solve
The problems mentioned above in the background art.
To achieve the above object, the utility model provides the following technical solutions:
A kind of sending device of medium wave channel emergent broadcast signalling comprising: audio data card feeding-discharging, rear panel,
Core processing board, front panel and power module, the audio data card feeding-discharging connection receive data path and send data
Access receives to be configured with dedicated AD adaptation module in data path, and analog audio signal is converted into 16bit by AD adaptation module
Pcm digital audio signal；It sends in data path and is configured with dedicated DA adaptation module, DA adaptation module is by the PCM of 16bit
Digital audio and video signals are converted into analog audio signal, and the audio data card feeding-discharging supports analog monaural audio and supports number
The reception and transmission of word audio signal.
As a further solution of the present invention: the rear panel is equipped with analog audio input interface, analogue audio frequency
Output interface, input information source channel digital audio input interface, digital audio output interface and Ethernet interface, wherein described
Analog audio input interface is five string holes Shi Kanong heads；The analogue audio frequency output interface is five line pin type card agriculture heads；It is described defeated
Entering information source channel digital audio input interface is three string holes Shi Kanong heads, and the digital audio output interface is three line pin type card agricultures
Head, the Ethernet interface are RJ45.
As a further solution of the present invention: the core processing board is the core part of entire sending device,
Which employs the mode of MCU+CPLD+DSP, the MCU realizes that human-computer interaction, emergency signaling enable switch and to device data
The display of rate of loading and stress state can also be selected and be switched to analog audio source and digital audio source, in OLED liquid
The displaying of device failure alert information and the bounce of medium wave broadcast audio signal sound column can also be shown on crystal display screen；The CPLD
For the rate adaptation of audio PCM sampling point data, in audio data receipt channel, CPLD receive come from audio data transceiver boards
The audio PCM sampling point of card, the data are transferred in CPLD chip with the sample rate of 48KHZ, need to be packaged into DSP symbol in CPLD
Close frame transformat frame signal transmitted, in audio data sendaisle, CPLD need to dsp interface issue frame into
Audio data is transferred in audio data transmitting-receiving board by row acquisition and decapsulation composition audio PCM sampling point by data/address bus.
CPLD also needs to handle the emergent broadcast instruction transmitted by Ethernet interface or serial ports, and the instruction is packaged into and meets DSP
The frame signal of format is transmitted；The DSP is the kernel processor chip of whole device, which is responsible for receiving CPLD's
PCM sampling point frame signal and emergent broadcast signaling frame signal, and add by hidden algorithm using emergent broadcast signaling as hiding data
It is loaded in PCM data sampling point.Audio PCM data is exported to CPLD after hiding data load, which is also equipped with software and guards the gate
Dog is monitored operation program state extremely.
As a further solution of the present invention: the front panel be configured with OLED liquid crystal display, parameter setting by
Key and channel indicator light, the OLED liquid crystal display are human-computer interaction liquid crystal display, can pass through parameter setting keys
It is arranged and the operating parameter of equipment is configured, can shows the Dynamic Cylindrical of present video input audio signal on the display screen
Figure, can intuitively supervise the working condition of the road information source in equipment；The channel indicator light can observe letter at a glance
Number resident channel；The power module is configured with MAX1951 power supply chip and relay, power supply by+5V DC supply input,
It is+3.3V and+1.4V by the decompression of MAX1951 power supply chip, is supplied to the chips such as DSP, audio interface and serial ports pressure stabilizing electricity
Source；The relay then helps power module power-down direct connection to act on.
Compared with prior art, the utility model has the beneficial effects that a kind of medium wave channel emergent broadcast signaling
The sending device of transmission is reasonable in design, and the chips such as power module is DSP, audio interface and serial ports provide regulated power supply,
Analog audio input interface, the analogue audio frequency output interface, input information source channel digital audio input being equipped with by rear panel
Interface, digital audio output interface and Ethernet interface access signal or output signal, core processing board are entire hair
The core part for sending equipment controls whole equipment operating by the way of MCU+CPLD+DSP, and front panel is configured with
OLED liquid crystal display shows the Dynamic Cylindrical figure of present video input audio signal, and road letter can be intuitively supervised in equipment
The working condition in source；Parameter setting keys setting is configured the operating parameter of equipment, the audio data card feeding-discharging connection
Receive data path and send data path, receives the dedicated AD adaptation module configured in data path for analog audio signal
It is converted into the pcm digital audio signal of 16bit；The dedicated DA adaptation module that configures is sent in data path by the PCM of 16bit
Digital audio and video signals are converted into analog audio signal；Audio data card feeding-discharging supports analog monaural audio and supports digital audio
The sending device of the reception and transmission of signal, a kind of medium wave channel emergent broadcast signalling is loaded by image watermarking
Technology realizes a kind of innovation of medium wave channel emergent broadcast signalling in medium wave broadcast system, is worth pre- in geological disaster
Cloth message area is accused to promote and use.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the sending device of medium wave channel emergent broadcast signalling.
In figure: 1-AD adaptation module, 2-DA adaptation module, 3- audio data card feeding-discharging, 4- core processing board, 5-MCU,
6-DSP, 7-CPLD, 8- serial ports, 9-OLED liquid crystal display, 10- Ethernet interface, 11- power module.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1, a kind of sending device of medium wave channel emergent broadcast signalling comprising: audio data transmitting-receiving
Card 3, rear panel, core processing board 4, front panel and power module 11, the connection of audio data card feeding-discharging 3 receive data
Access and data path is sent, receives to be configured with dedicated AD adaptation module 1 in data path, AD adaptation module 1 is by analog audio
Frequency signal is converted into the pcm digital audio signal of 16bit；It sends and is configured with dedicated DA adaptation module 2 in data path, DA is suitable
The pcm digital audio signal of 16bit is converted into analog audio signal with module 2, the audio data card feeding-discharging 3 supports mould
Quasi-simple channel audio and the reception and transmission for supporting digital audio and video signals.
The rear panel is equipped with analog audio input interface, analogue audio frequency output interface, input information source channel number sound
Frequency input interface, digital audio output interface and Ethernet interface, wherein the analog audio input interface is five string holes formulas
Card agriculture head；The analogue audio frequency output interface is five line pin type card agriculture heads；The input information source channel digital audio input interface
For three string holes Shi Kanong heads, the digital audio output interface is three line pin type card agriculture heads, and the Ethernet interface is RJ45.
The core processing board is the core part of entire sending device, and which employs the sides of MCU5+CPLD7+DSP6
Formula, the MCU5 realize that human-computer interaction, emergency signaling enable switch and show to device data rate of loading and stress state
Show, also analog audio source and digital audio source can be selected and switched, equipment can also be shown on OLED liquid crystal display 9
The displaying of fault alarm information and the bounce of medium wave broadcast audio signal sound column；The CPLD7 is for audio PCM sampling point data
Rate adaptation, in audio data receipt channel, CPLD receive from audio data transmitting-receiving board audio PCM sampling point, the number
The sample rate of 48KHZ is transferred in CPLD chip accordingly, needs to be packaged into the frame letter that DSP6 meets frame transformat in CPLD7
It number is transmitted, in audio data sendaisle, CPLD7 needs the frame issued to DSP6 interface to be acquired and decapsulation group
At audio PCM sampling point, audio data is transferred in audio data transmitting-receiving board by data/address bus.CPLD7 also need processing by with
The too emergent broadcast instruction that transmits of network interface 10 or serial ports 8, and the instruction is packaged into meet the frame signal of DSP format into
Row transmission；The DSP6 is the kernel processor chip of whole device, which is responsible for receiving the PCM sampling point frame letter of CPLD7
Number and emergent broadcast signaling frame signal, and by hidden algorithm using emergent broadcast signaling as hiding data load in PCM data
In sampling point.Audio PCM data is exported to CPLD7 after hiding data load, which is also equipped with software watchdog to operation
Program state is monitored extremely.
The front panel is configured with OLED liquid crystal display 9, parameter setting keys and channel indicator light, the OLED liquid
Crystal display screen 9 is human-computer interaction liquid crystal display 9, can be arranged by parameter setting keys and be set to the operating parameter of equipment
It sets, can show the Dynamic Cylindrical figure of present video input audio signal on the display screen, can intuitively supervise in equipment should
The working condition of road information source；The channel indicator light can observe the resident channel of signal at a glance.
The power module 11 is configured with MAX1951 power supply chip and relay, and power supply is by+5V DC supply input, warp
Crossing the decompression of MAX1951 power supply chip is+3.3V and+1.4V, is supplied to the chips such as DSP6, audio interface and serial ports 8 pressure stabilizing electricity
Source；The relay then helps 11 power-down direct connection of power module to act on.
The working principle of the utility model is: the chips such as power module 11 is DSP6, audio interface and serial ports 8 provide surely
Voltage source, the analog audio input interface being equipped with by rear panel, analogue audio frequency output interface, input information source channel number sound
Frequency input interface, digital audio output interface and Ethernet interface access signal or output signal, core processing board 4 are
The core part of entire sending device controls whole equipment operating by the way of MCU5+CPLD7+DSP6, before
Plate is configured with the Dynamic Cylindrical figure that OLED liquid crystal display 9 shows present video input audio signal, can be intuitively in equipment
Supervise the working condition of the road information source；Parameter setting keys setting is configured the operating parameter of equipment, the audio data
The connection of card feeding-discharging 3 receives data path and sends data path, and receiving the dedicated AD adaptation module 1 configured in data path will
Analog audio signal is converted into the pcm digital audio signal of 16bit；Send the dedicated DA adaptation module configured in data path
The pcm digital audio signal of 16bit is converted into analog audio signal by 2；Audio data card feeding-discharging supports analog monaural audio
With the reception and transmission for supporting digital audio and video signals, a kind of sending device knot of medium wave channel emergent broadcast signalling
Structure design rationally, a kind of medium wave channel emergent broadcast signaling is realized by image watermarking loading technique in medium wave broadcast system
The innovation of transmission is worth predicting the popularization of release information field in geological disaster and use.
For the technical staff of field, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and not
In the case where the spirit or essential attributes of the utility model, the utility model can be realized in other specific forms.Cause
This, in all respects, the present embodiments are to be considered as illustrative and not restrictive, the utility model
Range is indicated by the appended claims rather than the foregoing description, it is intended that by fall in the equivalent requirements of the claims meaning and
All changes in range are embraced therein.It should not treat any reference in the claims as involved by limitation
And claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of sending device of medium wave channel emergent broadcast signalling comprising: audio data card feeding-discharging (3), rear panel,
Core processing board (4), front panel and power module (11), it is characterised in that: audio data card feeding-discharging (3) connection connects
By data path and send data path；The rear panel is equipped with analog audio input interface, analogue audio frequency output interface, defeated
Enter information source channel digital audio input interface, digital audio output interface and Ethernet interface.
2. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: connect
By being configured in data path AD adaptation module (1), sends in data path and be configured with DA adaptation module (2).
3. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: institute
Stating analog audio input interface is five string holes Shi Kanong heads, and the analogue audio frequency output interface is five line pin type card agriculture heads.
4. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: institute
Stating input information source channel digital audio input interface is three string holes Shi Kanong heads, and the digital audio output interface is three line pin types
Card agriculture head, the Ethernet interface are RJ45.
5. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: institute
Core processing board is stated by the way of MCU (5)+CPLD (7)+DSP (6).
6. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: institute
It states front panel and is configured with OLED liquid crystal display (9), parameter setting keys and channel indicator light, the OLED liquid crystal display
It (9) is human-computer interaction liquid crystal display.
7. a kind of sending device of medium wave channel emergent broadcast signalling according to claim 1, it is characterised in that: institute
It states power module (11) and is configured with MAX1951 power supply chip and relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290750.7U CN208424380U (en) | 2018-08-10 | 2018-08-10 | A kind of sending device of medium wave channel emergent broadcast signalling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290750.7U CN208424380U (en) | 2018-08-10 | 2018-08-10 | A kind of sending device of medium wave channel emergent broadcast signalling |
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| Publication Number | Publication Date |
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| CN208424380U true CN208424380U (en) | 2019-01-22 |
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| CN201821290750.7U Active CN208424380U (en) | 2018-08-10 | 2018-08-10 | A kind of sending device of medium wave channel emergent broadcast signalling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094637A (en) * | 2023-04-13 | 2023-05-09 | 成都德芯数字科技股份有限公司 | Emergency broadcast command signal identification method and system for medium wave amplitude modulation broadcast |
-
2018
- 2018-08-10 CN CN201821290750.7U patent/CN208424380U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094637A (en) * | 2023-04-13 | 2023-05-09 | 成都德芯数字科技股份有限公司 | Emergency broadcast command signal identification method and system for medium wave amplitude modulation broadcast |
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