CN204906406U - Medium wave digital channel urgent broadcasting receives adapter - Google Patents
Medium wave digital channel urgent broadcasting receives adapter Download PDFInfo
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- CN204906406U CN204906406U CN201520470658.9U CN201520470658U CN204906406U CN 204906406 U CN204906406 U CN 204906406U CN 201520470658 U CN201520470658 U CN 201520470658U CN 204906406 U CN204906406 U CN 204906406U
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Abstract
The utility model provides a medium wave digital channel urgent broadcasting receives adapter, including M5 NULL, with the SAF3607 chip that M5 NULL links to each other, SD card, asynchronous receiving and dispatching transmitter, VS1053 module and TEF6638 chip. The utility model discloses a medium wave digital channel urgent broadcasting receives adapter, the professional DRM who chooses NXP for use receives the chip, realize medium wave digital broadcast's receipt, based on the DRM platform, secondary development carries out, the receipt that realizes the urgent broadcasting signalling is analytic, urgent broadcasting audio signal's the output of decoding, the core functions such as control of peripheral third party's equipment, the peculiar function of utilizing DRM data transmission simultaneously realizes that the extension of data propelling movement is applied, and possesses data storage, output, digital audio decodes, the program is automatic to be broadcasted, functions such as TTS, can combine each on -the -spot broadcast equipment like this, carry out the issue of the emergent news of various ways.
Description
Technical field
The utility model relates to a kind of adapter, and especially a kind of medium wave digital channel emergent broadcast receives adapter.
Background technology
Emergent broadcast is taken as the leading factor with broadcasting and TV, the emergency information of governments at all levels, all departments is passed covering system by the various joint of radio and television propagate, medium wave broadcast is as one of the covering system of broadcasting and TV, there are broad covered area, universal wide advantage, but traditional simulation medium wave broadcast also exist user listen to impression poor, the shortcomings such as poor anti jamming capability, the control simultaneously realizing digital signalling in emergent broadcast system is more difficult.
Original simulation medium wave mode, is used for doing in the process of emergent broadcast, has following some shortcomings:
1, to issue difficulty large for original simulation medium wave control signal;
2, in coverage, tonequality is poor, easily disturbed;
3, the technical bottleneck of Remote Wake Up, Region control, authentication cannot effectively be solved;
4, effect spread cannot be had to the information such as word, picture.
Utility model content
The utility model provides a kind of medium wave digital channel emergent broadcast and receives adapter, carries out digital improvement, makes it the transmission channel becoming digital signal, can solve above-mentioned technical bottleneck well to existing medium wave transmitting system.
The medium wave digital channel emergent broadcast realizing the utility model object receives adapter, comprises M5 integrated chip, the SAF3607 chip be connected with described M5 integrated chip, SD card, asynchronous receiving-transmitting transmitter, VS1053 module, relay and TEF6638 chip.
The beneficial effect that medium wave digital channel emergent broadcast of the present utility model receives adapter is as follows:
Medium wave digital channel emergent broadcast of the present utility model receives adapter, select the professional DRM receiving chip of NXP, realize the reception of medium wave digital broadcasting, based on DRM platform, carry out secondary development, the reception realizing emergent broadcast signaling is resolved, the decoding of emergent broadcast audio signal exports, the Core Features such as the control of peripheral third party device, use the expanded application of the peculiar functional realiey data-pushing of DRM transfer of data simultaneously, and possess data storage, export, digital audio decoding, program broadcasts automatically, the functions such as TTS, like this can in conjunction with the teller machines at each scene, as rural area typhon, square is broadcasted, the ground broadcast such as campus hospital, each square large-screen, market is broadcasted, station broadcast etc., carry out the issue of the emergent message of various ways.
Accompanying drawing explanation
Fig. 1 is the structural representation that medium wave digital channel emergent broadcast of the present utility model receives adapter.
Embodiment
As shown in Figure 1, medium wave digital channel emergent broadcast of the present utility model receives adapter, comprise M5 integrated chip 1, SAF3607 chip 2, the SD card 4, asynchronous receiving-transmitting transmitter 5, VS1053 module 6, relay 7 and the TEF6638 chip 3 that are connected with described M5 integrated chip 1.
Hardware designs is divided into DRM signal transacting and function application two large divisions, DRM signal transacting adopts SAF3607 and the TEF6638 nest plate of NXP company, wherein TEF6638 is prime radio demodulating chip, it is by the demodulation of software and radio technique medium wave radiofrequency signal, export IQ to the dsp chip SAF3607 of rear class, complete channel-decoding and source coding by it, function application adopts M5 integrated chip, it mainly completes the parsing of signaling, exports and controls and other expanded application.
First complete radio demodulating by TEF6638 chip, then complete channel-decoding and audio decoder by SAF3607;
M5, as the core of systematic difference process, completes the reception of emergent broadcast signaling, judgement, completes the reception of data-pushing, storage simultaneously;
Receiving terminal adopts two class human-computer interaction interfaces, adopt toggle switch that receive frequency (four 8421 yards is set, first is a dial-up), adopt toggle switch that (eight 8421 yards, address is set, two is one group, is city, county, township, village respectively), the mode that address code and receive frequency code adopt decoding to gather, select IO to control six 74HC245 (bus transceiver) by six bit slices, each 74HC245 docks two toggle switchs.By 5 LED display intensity, the design of RS232 communication indicator light is on three pin phoenix cross-talk sides, the design of RS485 communication indicator light is on three pin phoenix cross-talk sides, running status and emergency rating adopt a multiplexing display mode of lamp, 1 flashing times/second is running status at ordinary times, 5 flashing times/second is emergency rating instruction, DRM and TTS output indicator and off-line audio frequency export selects 1 indicator light multiplexing, Chang Liangwei DRM exports, dodge second is that TTS exports, quick flashing (5 times per second) is the output of off-line audio frequency, size is exported by instruction volumes such as 5 LED, the increase and decrease of local volume is completed with two buttons,
Equipment provides the function of MP3, AAC decoding and text-to-speech (TTS); Identity authentication function is provided;
Output audio is selected and output volume adjustment has TEF6638 to complete, decoded audio and TTS output audio deliver to TEF6638, by M5 control DRM (TEF6638 oneself generation), the selection of decoded audio and TTS audio frequency, M5 sends order (Local or Remote) and controls the total output volume of audio frequency simultaneously;
Medium wave digital channel emergent broadcast receives adapter and solves the technical barrier that control signal and channel signaling precisely synchronously issue, carry out the issue of emergent broadcast in conjunction with various places, various media format simultaneously, solve the drawback that simulation medium wave mode is easily disturbed, make acoustical quality in coverage obtain very large change.
The utility model is by signaling cipher mode, authentication, Region control are effectively solved, realize accurately waking up the long-range of equipment, improve the promptness of emergency information issue, accuracy, fail safe, utilize channel signaling, have effect spread to information such as word, picture, off-line voice.
Embodiment recited above is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the utility model designs spiritual prerequisite; the various distortion that the common engineers and technicians in this area make technical solutions of the utility model and improvement, all should fall in protection range that claims of the present utility model determine.
Claims (1)
1. medium wave digital channel emergent broadcast receives an adapter, it is characterized in that: comprise M5 integrated chip, the SAF3607 chip be connected with described M5 integrated chip, SD card, asynchronous receiving-transmitting transmitter, VS1053 module and TEF6638 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520470658.9U CN204906406U (en) | 2015-07-03 | 2015-07-03 | Medium wave digital channel urgent broadcasting receives adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520470658.9U CN204906406U (en) | 2015-07-03 | 2015-07-03 | Medium wave digital channel urgent broadcasting receives adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906406U true CN204906406U (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520470658.9U Expired - Fee Related CN204906406U (en) | 2015-07-03 | 2015-07-03 | Medium wave digital channel urgent broadcasting receives adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710174A (en) * | 2022-03-09 | 2022-07-05 | 陕西科技大学 | Emergency broadcast receiving device of vehicle-mounted digital radio broadcast |
| CN115842931A (en) * | 2022-11-28 | 2023-03-24 | 北京交大思源科技有限公司 | Television broadcasting system and method for emergency broadcast message |
-
2015
- 2015-07-03 CN CN201520470658.9U patent/CN204906406U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114710174A (en) * | 2022-03-09 | 2022-07-05 | 陕西科技大学 | Emergency broadcast receiving device of vehicle-mounted digital radio broadcast |
| CN115842931A (en) * | 2022-11-28 | 2023-03-24 | 北京交大思源科技有限公司 | Television broadcasting system and method for emergency broadcast message |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20160703 |