CN101764660A - Constant-voltage broadcasting system of controllable sub-control point - Google Patents
Constant-voltage broadcasting system of controllable sub-control point Download PDFInfo
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- CN101764660A CN101764660A CN200810156298A CN200810156298A CN101764660A CN 101764660 A CN101764660 A CN 101764660A CN 200810156298 A CN200810156298 A CN 200810156298A CN 200810156298 A CN200810156298 A CN 200810156298A CN 101764660 A CN101764660 A CN 101764660A
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Abstract
The invention relates to a constant-voltage broadcasting system of a controllable sub-control point; in the premise that a power amplifier of a complete set of broadcasting system is not repeatedly invested, the broadcasting function of the broadcasting sub-control point is realized by a broadcasting master control center and the broadcasting sub-control point also can break away from the broadcasting master control center to carry out the independent operation. Therefore, the resource is greatly saved and the operation is more convenient. The constant-voltage broadcasting system is characterized in that a triggering signal of a tail-end controller B comes from an audio power signal which is amplified by a power amplifier C1 and output by a broadcasting host machine A; the triggering signal of the tail-end controller B also can be from an audio signal after an audio power signal which is amplified by the power amplifier C1 and output by the broadcasting host machine A is attenuated; the audio signal which the tail-end controller B outputs to a power amplifier C2 uses the audio signal after an audio power signal which is amplified by the power amplifier C1 and output by the broadcasting host machine A is attenuated as the program source.
Description
Technical field
The present invention relates to the public broadcasting control system, particularly a kind of control appliance that makes constant-voltage addressable broadcasting realize Long-distance Control.
Background technology
There are a plurality of sub-control points in actual applications in Public Address system, and as the sports ground sub-control point of campus broadcast system, he need receive the self-timing signal at broadcast main control center when setting-up exercises to music, carry out autonomous independent broadcast operation when athletic meeting.What existing equipment and technology were taked when realizing this function basically is that the power amplifier that can drive whole power of loudspeaker is used at the broadcast main control center, install independent power amplifier additional at sub-control point again, take manually method to carry out handover operation and realize this type of function.
Use such scheme first: having caused the significantly lifting of project cost, caused overlapping investment, because equal the project cost of two cover power amplifiers, and can only be a cover power amplifier job in time period.Second: it is artificial manual operation that each minute controlled the zone, is easy to cause the power signals stack of two cover power amplifiers and damage power amplifier.The 3rd: if divide the manual operation in control zone in time not reset, Master Control Center just can't be realized any operation to a minute control zone.
Summary of the invention
In sum, the invention provides a kind of constant-voltage broadcasting system of controllable sub-control point, realize that broadcast main control center and a plurality of broadcasting sub-control point can carry out the local program source and amplify, and can control a plurality of broadcasting sub-control point power amplifiers and peripheral equipment power supply at the broadcast main control center, the program source at broadcast main control center being sent to the broadcasting sub-control point simultaneously is the function of amplifying output.
The constant-voltage broadcasting system of controllable sub-control point of the present invention is characterized by: the constant-voltage broadcasting system of controllable sub-control point is made up of broadcast host A, terminal controller B, power amplifier C and loud speaker D four parts; Broadcast host A can be controlled by the program of PC end; Broadcast host A accepts behind the audio power signal of power amplifier C1 can subregion output; The power supply of power amplifier C1 is controlled by broadcast host A; The power supply of power amplifier C2 is controlled by terminal controller B; The triggering signal of terminal controller B is the audio power signal through broadcast host A output after coming from power amplifier C1 and amplifying; The triggering signal of terminal controller B also will come from the audio signal after the audio power signal attenuation of broadcast host A output after power amplifier C1 amplifies; Terminal controller B exports the audio signal of power amplifier C2 to, is as program source with the audio signal after the audio power signal attenuation of broadcast host A output after coming from power amplifier C1 and amplifying.
The present invention has following substantive distinguishing features and advantage:
Do not do at the power amplifier of a whole set of broadcast system can realize under the prerequisite of overlapping investment that by the broadcast capability of broadcast main control center each is broadcasted sub-control point and also can break away from the broadcast main control center and carry out independent operation to each broadcasting sub-control point.Saved greatly resource and the operation more convenient.
Description of drawings
Accompanying drawing is the constituent components figure of the constant-voltage broadcasting system of controllable sub-control point.
* accompanying drawing major part symbol description *
A: broadcast host
B: terminal controller
C: power amplifier (the terminal power amplifier of C1 front end power amplifier C2)
D: loud speaker
Embodiment
Consult accompanying drawing, the constant-voltage broadcasting system of controllable sub-control point of the present invention is by broadcast host A, terminal controller B, power amplifier C and loud speaker D four parts are formed, the power supply of broadcast host A control front end power amplifier C1 and the audio power signal of accepting front end power amplifier C1 export the loud speaker D of each subregion to, terminal controller B can be used as triggering signal after receiving the audio power signal, open the power supply of terminal power amplifier C2, and be the audio input end that original audio signal exports terminal power amplifier C2 to audio power signal attenuation, export loud speaker D to after amplifying by terminal power amplifier C2.
Described each assembly of accompanying drawing all belongs to general and mature technique, and can adopt multiple scheme to realize, though the scheme that realizes can be ever-changing, its basic principle is the same.
Claims (8)
1. the constant-voltage broadcasting system of a controllable sub-control point, it is characterized by: the constant-voltage broadcasting system of described controllable sub-control point is made up of broadcast host A, terminal controller B, power amplifier C and loud speaker D four parts.
2. broadcast host A according to claim 1 is characterized by: described broadcast host A can be controlled by the program of PC end.
3. according to claim 1,2 described broadcast host A, it is characterized by: described broadcast host A can subregion output after accepting the audio power signal of power amplifier C1.
4. power amplifier C according to claim 1 is characterized by: the power supply of described power amplifier C1 is controlled by broadcast host A.
5. power amplifier C according to claim 1 is characterized by: the power supply of described power amplifier C2 is controlled by terminal controller B.
6. terminal controller B according to claim 1 is characterized by: the triggering signal of described terminal controller B is the audio power signal through broadcast host A output after coming from power amplifier C1 and amplifying.
7. according to claim 1,5 described terminal controller B, it is characterized by: the triggering signal of described terminal controller B also will come from the audio signal after the audio power signal attenuation of broadcast host A output after power amplifier C1 amplifies.
8. terminal controller B according to claim 1, it is characterized by: described terminal controller B exports the audio signal of power amplifier C2 to, is as program source with the audio signal after the audio power signal attenuation of broadcast host A output after coming from power amplifier C1 and amplifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810156298A CN101764660A (en) | 2008-10-09 | 2008-10-09 | Constant-voltage broadcasting system of controllable sub-control point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810156298A CN101764660A (en) | 2008-10-09 | 2008-10-09 | Constant-voltage broadcasting system of controllable sub-control point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101764660A true CN101764660A (en) | 2010-06-30 |
Family
ID=42495658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810156298A Pending CN101764660A (en) | 2008-10-09 | 2008-10-09 | Constant-voltage broadcasting system of controllable sub-control point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101764660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457340A (en) * | 2010-10-29 | 2012-05-16 | 杨林 | Branch-control broadcast controller with delay |
| CN102457344A (en) * | 2010-10-29 | 2012-05-16 | 杨林 | Broadcasting controller for branch control |
-
2008
- 2008-10-09 CN CN200810156298A patent/CN101764660A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457340A (en) * | 2010-10-29 | 2012-05-16 | 杨林 | Branch-control broadcast controller with delay |
| CN102457344A (en) * | 2010-10-29 | 2012-05-16 | 杨林 | Broadcasting controller for branch control |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |