CN204362074U - OFDM power carrier addressing audio amplifier - Google Patents
OFDM power carrier addressing audio amplifier Download PDFInfo
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- CN204362074U CN204362074U CN201520072824.XU CN201520072824U CN204362074U CN 204362074 U CN204362074 U CN 204362074U CN 201520072824 U CN201520072824 U CN 201520072824U CN 204362074 U CN204362074 U CN 204362074U
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- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model discloses a kind of OFDM power carrier addressing audio amplifier, comprise front end receiver system and back-end processing system, described back-end processing system comprises power carrier receiver module, FM high-frequency reception module, digital power amplifier module and audio-frequency module.What the utility model was convenient, practical have from radio frequency be input to stereo and data output function can audio amplifier, utilize ripe RDS technology, soniferous while, can digital controlled signal be accepted, add power carrier scheme simultaneously and adopt OFDM technology to carry out broadcast data transmission.
Description
Technical field
The utility model relates to addressable digital broadcast equipment field, particularly relates to a kind of OFDM power carrier addressing audio amplifier.
Background technology
Common addressing audio amplifier only has level switch machine function, and the receiving sensitivity of traditional common radio chip, and stereo noise when data transmission performance is all bad, even some chip more not supported data transfer function; A lot of chip or circuit can not low level receive, and when signal is lower than 35dB, sound will produce serious noise, and data more can not reliable reception; Due to the impact of the structure by traditional die, its peripheral circuit and complexity thereof, debugging trouble, and high especially to the required precision of components and parts, the performance of complete machine in production and use procedure is had a strong impact on.
Tradition addressing audio amplifier adopts simulative debugging demodulation passage to carry out transfer of data, and receiving sensitivity is low, and transmit broadcast program less, and can not realize reliable switching on and shutting down, can not prevent the intrusion of illegal signals, work noise is large; In addition traditional amplifier also cannot realize remote upgrade, and on-site maintenance mode is very single, and complex operation step is not directly perceived; According to above problem, so new-generation digital addressable amplifier arises at the historic moment, and play a part very important in emergent intelligent digital broadcast system.
Namely traditional addressing audio amplifier will power to audio amplifier also will provide signal source for it, but after adopting PLC technology, broadcast as long as audio amplifier has electricity just can transmit data, data are transmitted in both directions simultaneously, just can realize reliable Network Management Function.
Utility model content
Based on this, for existing problem, be necessary to propose a kind of convenience, practical have from radio frequency be input to stereo and data output function can audio amplifier, utilize ripe RDS technology, soniferous while, can digital controlled signal be accepted, add power carrier scheme simultaneously and adopt OFDM technology to carry out the OFDM power carrier addressing audio amplifier of broadcast data transmission.
The technical solution of the utility model is: a kind of OFDM power carrier addressing audio amplifier, comprise front end receiver system and back-end processing system, described front end receiver system comprises the RDS coding module connected successively, ADC analog-to-digital conversion module, AGC gain control module and output module, described back-end processing system comprises power carrier receiver module, FM high-frequency reception module, digital power amplifier module and audio-frequency module, the signal input part of described power carrier receiver module and FM high-frequency reception module is connected with the first signal output part of the output module of front end receiver system and secondary signal output respectively, the signal output part of described power carrier receiver module and FM high-frequency reception module is connected with the first signal input part of digital power amplifier module and secondary signal input respectively, the described signal output part of digital power amplifier module is connected with the signal input part of audio-frequency module.
In one of them embodiment, also comprise voice input module, the signal input part of described voice input module is connected with the 3rd signal output part of the output module of front end receiver system, and the signal output part of described voice input module is connected with the 3rd signal input part of digital power amplifier module.
In one of them embodiment, also comprise boosting voltage changing module, the signal input part of described boosting voltage changing module is connected with the signal output part of digital power amplifier module, and the described signal output part of boosting voltage changing module is connected with the signal input part of audio-frequency module.
In one of them embodiment, described front end receiver system and back-end processing system are all arranged in audio amplifier shell, and described audio amplifier shell outer surface has groove.
In one of them embodiment, described voice input module is mobile phone.
In one of them embodiment, described audio-frequency module is loudspeaker.
In one of them embodiment, described boosting voltage changing module is step-up transformer.
The beneficial effects of the utility model are:
(1) receiving terminal adopts FM high-frequency reception module, and emergent broadcast is unaffected;
(2) owing to have employed the power amplifier principle of digital switch formula, so than analog amplifier power saving more, heating is few, and principle is simpler, and reliability significantly improves;
(3) digital power amplifier module adopts perfect Thermal protection, short-circuit protection, overvoltage protection, under-voltage protection and heat reflection protection, long service life;
(4) adopt ripe voice input module, the work of control figure power amplifier module can be carried out by phone, also can be conversed by voice input module simultaneously;
(5) add power carrier receiver module, do not need extra holding wire just can be broadcasted by power line like this.
Accompanying drawing explanation
Fig. 1 is the signal flow block diagram described in the utility model embodiment;
Description of reference numerals:
10, power carrier receiver module; 20, FM high-frequency reception module; 30, digital power amplifier module; 40, audio-frequency module; 50, voice input module; 60, boost voltage changing module; 70, front end receiver system.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Embodiment:
As shown in Figure 1, a kind of OFDM power carrier addressing audio amplifier, comprise front end receiver system 70 and back-end processing system, described front end receiver system 70 comprises the RDS coding module connected successively, ADC analog-to-digital conversion module, AGC gain control module and output module, described back-end processing system comprises power carrier receiver module 10, FM high-frequency reception module 20, digital power amplifier module 30 and audio-frequency module 40, the signal input part of described power carrier receiver module 10 and FM high-frequency reception module 20 is connected with the first signal output part of the output module of front end receiver system 70 and secondary signal output respectively, the signal output part of described power carrier receiver module 10 and FM high-frequency reception module 20 is connected with the first signal input part of digital power amplifier module 30 and secondary signal input respectively, the signal output part of described digital power amplifier module 30 is connected with the signal input part of audio-frequency module 40.
In the present embodiment, also comprise voice input module 50, the signal input part of described voice input module 50 is connected with the 3rd signal output part of the output module of front end receiver system, and the signal output part of described voice input module 50 is connected with the 3rd signal input part of digital power amplifier module 30.
In the present embodiment, also comprise boosting voltage changing module 60, the signal input part of described boosting voltage changing module 60 is connected with the signal output part of digital power amplifier module 30, and the signal output part of described boosting voltage changing module 60 is connected with the signal input part of audio-frequency module 40.
In the present embodiment, described front end receiver system 70 and back-end processing system are all arranged in audio amplifier shell, and described audio amplifier shell outer surface has groove.
In the present embodiment, described voice input module 50 is mobile phone.
In the present embodiment, described audio-frequency module 40 is loudspeaker.
In the present embodiment, described boosting voltage changing module 60 is step-up transformer.
In the process of work, during Received signal strength, power carrier receiver module 10 and one of them receiver module Received signal strength of FM high-frequency reception module 20 can be selected, then the Signal transmissions received is processed to digital power amplifier module 30.Signal after process is exported by audio-frequency module 40.In addition, the voice input module 50 provided can facilitate user to be controlled digital power amplifier module 30 by voice.The boosting voltage changing module 60 provided can boost and transformation to signal, to output signal more easily.
The above embodiment only have expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (7)
1. an OFDM power carrier addressing audio amplifier, comprise front end receiver system and back-end processing system, described front end receiver system comprises the RDS coding module connected successively, ADC analog-to-digital conversion module, AGC gain control module and output module, it is characterized in that, described back-end processing system comprises power carrier receiver module, FM high-frequency reception module, digital power amplifier module and audio-frequency module, the signal input part of described power carrier receiver module and FM high-frequency reception module is connected with the first signal output part of the output module of front end receiver system and secondary signal output respectively, the signal output part of described power carrier receiver module and FM high-frequency reception module is connected with the first signal input part of digital power amplifier module and secondary signal input respectively, the described signal output part of digital power amplifier module is connected with the signal input part of audio-frequency module.
2. OFDM power carrier addressing audio amplifier according to claim 1, it is characterized in that, also comprise voice input module, the signal input part of described voice input module is connected with the 3rd signal output part of the output module of front end receiver system, and the signal output part of described voice input module is connected with the 3rd signal input part of digital power amplifier module.
3. OFDM power carrier addressing audio amplifier according to claim 1 and 2, it is characterized in that, also comprise boosting voltage changing module, the signal input part of described boosting voltage changing module is connected with the signal output part of digital power amplifier module, and the described signal output part of boosting voltage changing module is connected with the signal input part of audio-frequency module.
4. OFDM power carrier addressing audio amplifier according to claim 1, it is characterized in that, described front end receiver system and back-end processing system are all arranged in audio amplifier shell, and described audio amplifier shell outer surface has groove.
5. OFDM power carrier addressing audio amplifier according to claim 2, it is characterized in that, described voice input module is mobile phone.
6. OFDM power carrier addressing audio amplifier according to claim 1 and 2, it is characterized in that, described audio-frequency module is loudspeaker.
7. OFDM power carrier addressing audio amplifier according to claim 3, it is characterized in that, described boosting voltage changing module is step-up transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072824.XU CN204362074U (en) | 2015-02-02 | 2015-02-02 | OFDM power carrier addressing audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520072824.XU CN204362074U (en) | 2015-02-02 | 2015-02-02 | OFDM power carrier addressing audio amplifier |
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| Publication Number | Publication Date |
|---|---|
| CN204362074U true CN204362074U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520072824.XU Active CN204362074U (en) | 2015-02-02 | 2015-02-02 | OFDM power carrier addressing audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204362074U (en) |
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2015
- 2015-02-02 CN CN201520072824.XU patent/CN204362074U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 610000, Sichuan, Chengdu, Wuhou District Wuhou Metro Management Committee, Wu Qing Road, No. 40 digital science and Technology Plaza, block B, building 10 Patentee after: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Address before: 610000 Sichuan city of Chengdu province Wuhou District Vuko east two Road No. 11 building 3 floor 7-1 No. 7 Patentee before: SICHUAN TELECAST TECHNOLOGY CO.,LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: OFDM power carrier addressing loudspeaker and control method thereof Effective date of registration: 20171012 Granted publication date: 20150527 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2017510000074 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180208 Granted publication date: 20150527 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2017510000074 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: OFDM power carrier addressing loudspeaker and control method thereof Effective date of registration: 20180302 Granted publication date: 20150527 Pledgee: Bank of Guiyang Limited by Share Ltd. Chengdu Qingyang branch Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2018990000161 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190328 Granted publication date: 20150527 Pledgee: Bank of Guiyang Limited by Share Ltd. Chengdu Qingyang branch Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2018990000161 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: OFDM power carrier addressing loudspeaker and control method thereof Effective date of registration: 20190403 Granted publication date: 20150527 Pledgee: Bank of Guiyang Limited by Share Ltd. Chengdu Qingyang branch Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2019510000042 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230320 Granted publication date: 20150527 Pledgee: Bank of Guiyang Limited by Share Ltd. Chengdu Qingyang branch Pledgor: SICHUAN TELECAST TECHNOLOGY CO.,LTD. Registration number: 2019510000042 |