CN105307097A - Online monitoring method for audio power amplifier and system thereof - Google Patents
Online monitoring method for audio power amplifier and system thereof Download PDFInfo
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- CN105307097A CN105307097A CN201510647923.0A CN201510647923A CN105307097A CN 105307097 A CN105307097 A CN 105307097A CN 201510647923 A CN201510647923 A CN 201510647923A CN 105307097 A CN105307097 A CN 105307097A
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Abstract
The invention provides an online monitoring method for an audio power amplifier and a system thereof. The method comprises the following steps: when playing an audio signal, obtaining audio output power; continuously detecting and judging whether the audio output power is smaller than a preset threshold; if the audio output power is smaller than the threshold, outputting a low level signal, and uploading the ID of the power amplifier; and monitoring the low level signal and the ID of the power amplifier in real time. According to the online monitoring method for the audio power amplifier provided by the invention, the audio output power of the power amplifier is detected in real time, when the obtained power value is smaller than the threshold, the low level signal is output, and the corresponding ID of the power amplifier is fed back to a monitoring center, so that abnormal conditions of the output power of the power amplifier are obtained in time to improve the reliability of the running power amplifier.
Description
Technical field
The present invention relates to network audio power amplifier techniques field, relate to a kind of audio frequency power amplifier on-line monitoring method and system thereof especially.
Background technology
IP network audio frequency power amplifier is the nucleus equipment that IP network broadcast is broadcasted, and traditional IP network power amplifier state-detection takes the mode of off-line more.The method of this offline inspection, is applicable to all kinds of audio frequency power amplifier.Such as, disclose a kind of portable power amplifier failure detector in CN201210516654.0.
Existing such device only can be used for detecting the power amplifier under holding state.When fault is not serious, cannot Timeliness coverage, often can miss optimum maintenance opportunity, detection efficiency is low.Offline inspection belongs to and detects afterwards, and existing network monitoring apparatus can not the state of real-time query undernet power amplifier, and when fault in use accidentally occurs, these devices all cannot Timeliness coverage, still these power amplifiers can be considered as qualified power amplifier and continue to use.Causing being used for various occasion by there is the dangerous power amplifier that lost efficacy, affecting power amplifier dependability.Broadcast under fully can not meeting the daily and emergent situation of existing broadcast system the demand standing ready, respond fast.
Summary of the invention
The object of the present invention is to provide a kind of audio frequency power amplifier on-line monitoring method and system thereof, the present invention mainly solves in prior art and cannot detect power amplifier in real time, the problem of exception and fault can not in use occur Timeliness coverage power amplifier.
The invention provides a kind of audio frequency power amplifier on-line monitoring method, comprise the following steps: during playing audio signal, obtain sound output; Continuous detection also judges whether sound output is less than predetermined threshold value; If sound output is less than threshold value, then output low level signal upload the ID of power amplifier; Real-time monitoring low level signal and power amplifier ID.
Further, sound output step is obtained further comprising the steps of: obtain network data; Network data is decoded as audio signal; Export after audio signal is amplified by power amplifier.
Further, judge that sound output is further comprising the steps of after being less than threshold value: cumulative n sound output, and whether judge n >=A; If n >=A, then ask for the average power of n sound output, compare by average power alternate audio power output and threshold value.
Further, A=15.
Further, power amplifier is IP network power amplifier or wireless network power amplifier.
Further, power amplifier is IP network power amplifier.
The present invention additionally provides a kind of audio frequency power amplifier on-line monitoring system on the other hand, comprising: obtain sound output module, detect sound output module, upper transmission module and monitoring module; Obtain sound output module, for obtaining the sound output amplified during playing audio signal; Detect sound output module, for judging whether obtained sound output is less than predetermined threshold value; Upper transmission module, uploads for output low level signal the ID that sound output is less than the power amplifier of threshold value; Monitoring module, for real-time reception and monitoring low level signal and power amplifier ID corresponding with it.
Further, obtain sound output module and also comprise acquisition Network Data Units, decoding unit and analog amplifier unit; Obtain Network Data Units, for obtaining network data; Decoding unit, for being decoded as audio signal by network data; Analog amplifier unit, is exported after audio signal being amplified by power amplifier.
Further, power summing elements, count detecting unit and mean power detection unit is also comprised in detection sound output module; Power summing elements, for cumulative n continuous print sound output; Whether count detecting unit, for detecting n >=A; Asking for average power unit, for asking for average power to n sound output, and comparing by average power alternate audio power output and threshold value.
Further, A=15.
Advantage of the present invention:
Audio frequency power amplifier on-line monitoring method provided by the invention is by detecting in real time the sound output of power amplifier, when gained performance number is lower than threshold value, output low level signal, and the power amplifier ID of correspondence is fed back to Surveillance center, make Surveillance center can obtain the situation of power amplifier power output exception in time, improve the reliability of power amplifier in using.
Audio frequency power amplifier on-line monitoring system provided by the invention is detected the power output after power amplifier amplification in real time by power amplifier power detection module, when the power that detection obtains is lower than threshold value, the ID of checkout gear output low level signal and corresponding power amplifier is to Surveillance center, thus status monitoring is carried out to power amplifier, ensure the general level of the health of broadcast system, to realize timely reliable response that is daily, emergent broadcast task.
Following description with reference to the various embodiments according to audio frequency power amplifier on-line monitoring method of the present invention and system thereof will make above and other aspect of the present invention apparent.
Accompanying drawing explanation
The present invention is explained in more detail referring now to accompanying drawing, wherein:
Fig. 1 is the audio frequency power amplifier on-line monitoring method schematic flow sheet of preferred embodiment of the present invention;
Fig. 2 preferably judges sound output method flow schematic diagram in the audio frequency power amplifier on-line monitoring method of preferred embodiment of the present invention;
Fig. 3 is the acquisition sound output steps flow chart schematic diagram of the preferred embodiments of the present invention;
Fig. 4 is the audio frequency power amplifier on-line monitoring system schematic diagram of the preferred embodiments of the present invention;
Fig. 5 is the acquisition sound output module diagram of the preferred embodiments of the present invention;
Fig. 6 is the detection sound output module diagram of the preferred embodiments of the present invention.
Embodiment
The invention provides a kind of audio frequency power amplifier on-line monitoring method and system thereof, method and system provided by the invention goes for multiple audio frequency power amplifier, and such as IP network power amplifier or wireless network power amplifier all can use.Especially IP network audio frequency power amplifier is preferred for.Testing result accuracy and real-time are all better.
See Fig. 1, be audio frequency power amplifier on-line monitoring method provided by the invention, comprise the following steps:
Step S200: obtain sound output during playing audio signal;
Step S300: detect sound output continuously and whether be less than predetermined threshold value;
Step S600: if sound output is less than threshold value, then output low level signal upload the ID of power amplifier;
Step S700: monitoring low level signal and power amplifier ID.
The sound output obtained, after referring to that audio signal is amplified by power amplifier to be detected, sound output during output.Detect this power, can monitor the amplification situation of power amplifier to audio signal.Power amplifier herein can be the equipment that audio signal can be amplified.Such as aforementioned various power amplifier.Sound output is herein amplify through power amplifier.Audio signal can be by network data encoding and decoding, also can be equipment local audio signal.Do not limit the producing method of audio signal.To utilize IP network to carry out transmission of audio signal, the acquisition of this audio signal comprises the following steps:
1) the IP packets of audio data through TCP/IP coding is sent by IP network and network interface to IP network power amplifier;
2) after the network coding-decoding circuit of network power amplifier receives the packets of audio data of automatic network, by network coding-decoding circuit, IP packets of audio data is decoded into digital audio and video signals, and is transferred to digital power amplifier circuit;
When audio signal derives from broadcasting local audio: after the audio file that this locality is play by IP network power amplifier carries out power amplification process, also can obtain the sound output for detecting.
Step S200 can realize with power amplifier.Audio signal after amplification can walk abreast and send into that loudspeaker etc. are outer to be put in equipment while carrying out detecting, and plays while detection.Outer equipment of putting herein can be audio amplifier, loudspeaker or earphone.Adopt the method not affect the outer playing function of power amplifier on the one hand, can continue again to carry out detecting institute's output audio power simultaneously.Any sound output lower than threshold value can be caught, and the ID of obtained low level signal and corresponding power amplifier is converted into numerical data, transfer to monitoring module 700 and monitor.Monitoring module 700 is decoded to the digital signal obtained, and is the power amplifier terminal abnormal of which subregion according to id information and terminal's status information judgement.And generate memorandum record, for plant maintenance, personnel check.Thus know, the risk of trouble or failure may be there is in the power amplifying device of which broadcast subregion.Also can according to the detected number of times lower than threshold value sound output, the preliminary inefficacy ratio inferring each power amplifier.
By detecting the power of the audio frequency that power amplifier exports continuously in step S300, the appearance of undetected situation can be avoided.When sound output is greater than threshold value, this detection terminates.Continue to detect next sound output.When power is lower than predetermined threshold value, illustrate that the enlarging function of this power amplifier has problem, need further to detect.In use, the reliability of power amplifier can also be understood in advance.Now detection module is to Surveillance center's output low level signal.Return to Surveillance center after this signal is encoded, by broadcast, Surveillance center arranges maintenance in time according to failure condition.Presetting of threshold value can set according to sound output during power amplifier normal condition to be detected.
Preferably, in order to reduce accidental low-power audio Output rusults to the interference of testing result, step S300 is further comprising the steps of:
Cumulative n sound output, and whether judge n >=A;
If n >=A, then ask for the average power of n sound output, compare judgement by average power alternate audio power output and threshold value.
Preferred A=15 herein.Now the testing result accuracy of power amplifier is reached maximum, flase drop can be down to minimum simultaneously.
Concrete, see Fig. 2, step S301: cumulative n sound output;
Step S302: whether judge n >=A;
Step S303: if n >=A, asks for the average power of a cumulative n sound output;
Step S304: judge whether average power is less than threshold value;
Step S600: if sound output is less than threshold value, then output low level signal upload the ID of power amplifier; When average power is greater than threshold value, detects and terminate.
Step S700: monitoring low level signal and power amplifier ID.
Preferably, in order to the broadcasting making the method be applicable to network audio, see Fig. 3, obtain sound output step and comprise the following steps:
Step S101: obtain network data;
Step S102: network data is decoded as audio signal;
Step S103: export after audio signal is amplified by power amplifier.
The module that the concrete module used can be commonly used for IP network power amplifier.
First obtain network data from network, network is herein not limited to other networks of IP network.By decoding, network data is decoded as voice data afterwards.Export by putting equipment outward after being amplified by power amplifier afterwards.
If n >=A, then ask for the average power of n sound output, compare judgement by average power alternate audio power output and threshold value.
Obviously, before starting detection, also need whether open state is in power amplifier and detect.Detection obtains power amplifier to be detected when being in open state, proceeds subsequent operation.The enforcement of each step of said method, the module with respective action adopting this area to commonly use, is not limited to concrete device.
See Fig. 4, the present invention additionally provides a kind of audio frequency power amplifier on-line monitoring system on the other hand and comprises: obtain sound output mould 200, detect sound output module 300, upper transmission module 600 and monitoring module 700;
Obtain sound output module 200, for obtaining sound output during playing audio signal;
Detect sound output module 300, for judging whether obtained sound output is less than predetermined threshold value;
Upper transmission module 600, will upload sound output and be less than the ID of the power amplifier of threshold value for output low level signal;
Monitoring module 700, for real-time reception and monitoring low level signal and power amplifier ID corresponding with it.
This system obtains the power output of this audio signal while playing the audio signal through amplifying process.And this sound output and the threshold value preset are compared detecting in sound output module 300, thus determine whether this power amplifier is when carrying out amplification and processing to this audio signal, exist exception.Upper transmission module 600, only when the sound output detected is lower than threshold value, by low level now and corresponding power amplifier ID, exports after being encoded to digital signal and is uploaded to monitoring module 700.After monitoring module 700 obtains low level and power amplifier ID, judge whether accordingly to need repairing, and when carry out which kind of maintenance.Thus the on-line monitoring realized power amplifier.Monitoring module 700 is decoded to the digital signal obtained, and is the power amplifier terminal abnormal of which subregion according to id information and terminal's status information judgement.And generate memorandum record, for plant maintenance, personnel check.
Adopt this system, while can be implemented in power amplifier audio plays, carry out the detection of sound output.Without the need to detecting under off-line state, improve the accuracy of detection, improve the reliability of the power amplifier come into operation simultaneously.Above-mentioned each module can be any conventional device and the combination thereof that can realize above-mentioned functions.Such as IP network power amplifier, this wherein network power amplifier function can be completed by network coding-decoding circuit and analog/digital power amplifier.Power detection can be completed by ouput power detection circuit.The broadcasting of last audio frequency can complete by putting outward equipment.
This obvious system, also comprises audio signal amplification module, thus produces the sound output that may be used for detecting.
See Fig. 5, preferably, obtain sound output module 200 and also comprise acquisition Network Data Units 101, decoding unit 102 and analog amplifier unit 103;
Obtain Network Data Units 101, for obtaining network data;
Decoding unit 102, for being decoded as audio signal by network data;
Analog amplifier unit 103, is exported after audio signal being amplified by power amplifier.
Obtain Network Data Units 101 from the corresponding packet of Network Capture.This unit can include but not limited to the parts that network interface etc. is required.The network packet obtained is formed after TCP/IP coding, can be decoded as the decoded data packets of audio signal by decoding unit 102.Output and the amplification of audio frequency is realized after amplifying via analog amplifier unit 103 afterwards.Again can by the audio external play after amplifying by putting equipment outward, and to produce be sound output to be detected simultaneously.
Preferably, see Fig. 6, detect in sound output module 300 and also comprise power summing elements 301, count detecting unit 302 and mean power detection unit 303;
Power summing elements 301, for cumulative n continuous print sound output;
Whether count detecting unit 302, for detecting n >=A;
Asking for average power unit 303, for asking for average power to n sound output, and comparing by average power alternate audio power output and threshold value.
The sound output adopting above-mentioned detection sound output module 300 can avoid accidentally occurring is too low.Reduce metrical error, improve detection accuracy.The sound output that n continuous print exports adds up by power summing elements 301, after having added up at every turn, whether n is detected >=A through count detecting unit 302, if cumulative number can not be up to standard, then continue cumulative, until meet n >=A, after through asking for the average power of n the sound output that average power unit 303 obtains adding up, and substitute single sound output by average power and threshold value compares.Thus know the output situation of a continuous print sound output.
Preferred A=15 herein.Now the testing result accuracy of power amplifier is reached maximum, flase drop can be down to minimum simultaneously.
Power amplifier online test method provided by the invention and system, without the need to stopping the program that power amplifier is being play, can complete the detection of network power amplifier state.Once find network power amplifier abnormal state, instant by uploading module to monitoring modular uploading device fault and place partition information, condition maintenarnce for network power amplifier provides foundation accurately and reliably, application of the present invention and popularization, for promoting the holistic health level of net broadcast system and promptness that is daily, emergent broadcast response, have positive demonstration meaning and function.
Clear scope of the present invention is not restricted to example discussed above by those skilled in the art, likely carries out some changes and amendment to it, and does not depart from the scope of the present invention of appended claims restriction.Although oneself is through detailed icon in the accompanying drawings and the description and describe the present invention, such explanation and to describe be only to illustrate or schematically, and nonrestrictive.The present invention is not limited to the disclosed embodiments.
By to accompanying drawing, the research of specification and claims, it will be appreciated by those skilled in the art that when implementing of the present invention and realize the distortion of the disclosed embodiments.In detail in the claims, term " comprises " does not get rid of other steps or element, and indefinite article " " or " one " are not got rid of multiple.The fact of some measure of quoting in mutually different dependent claims does not mean that the combination of these measures can not be advantageously used.Any reference marker in claims does not form the restriction to scope of the present invention.
Claims (10)
1. an audio frequency power amplifier on-line monitoring method, is characterized in that, comprises the following steps:
Sound output is obtained during playing audio signal;
Continuous detection also judges whether described sound output is less than predetermined threshold value;
If described sound output is less than threshold value, then output low level signal upload the ID of described power amplifier;
The described low level signal of real-time monitoring and described power amplifier ID.
2. audio frequency power amplifier on-line monitoring method according to claim 1, is characterized in that, described acquisition sound output step is further comprising the steps of:
Obtain network data;
Described network data is decoded as audio signal;
Export after described audio signal is amplified by described power amplifier.
3. audio frequency power amplifier on-line monitoring method according to claim 1, is characterized in that, judges that described sound output is further comprising the steps of after being less than threshold value:
Cumulative n described sound output, and whether judge n >=A;
If n >=A, then ask for the average power of n described sound output, substitute described sound output by described average power and described threshold value compares.
4. audio frequency power amplifier on-line monitoring method according to claim 3, is characterized in that, described A=15.
5. the audio frequency power amplifier on-line monitoring method described in any one of Claims 1 to 4, is characterized in that, described power amplifier is IP network power amplifier or wireless network power amplifier.
6. audio frequency power amplifier on-line monitoring method according to claim 5, is characterized in that, described power amplifier is IP network power amplifier.
7. an audio frequency power amplifier on-line monitoring system, is characterized in that, comprising: obtain sound output module, detect sound output module, upper transmission module and monitoring module;
Described acquisition sound output module, for obtaining the sound output amplified during playing audio signal;
Described detection sound output module, for judging whether obtained described sound output is less than predetermined threshold value;
Described upper transmission module, will upload described sound output and be less than the ID of the described power amplifier of described threshold value for output low level signal;
Described monitoring module, for real-time reception and the described low level signal of monitoring and described power amplifier ID corresponding with it.
8. audio frequency power amplifier on-line monitoring system according to claim 7, is characterized in that, obtains sound output module and also comprises acquisition Network Data Units, decoding unit and analog amplifier unit;
Described acquisition Network Data Units, for obtaining network data;
Described decoding unit, for being decoded as audio signal by described network data;
Described analog amplifier unit, is exported after described audio signal being amplified by described power amplifier.
9. audio frequency power amplifier on-line monitoring system according to claim 7, is characterized in that, also comprises power summing elements, count detecting unit and mean power detection unit in described detection sound output module;
Described power summing elements, for sound output described in a cumulative n continuous print;
Whether described count detecting unit, for detecting described n >=A;
Describedly asking for average power unit, for asking for average power to a described n sound output, and substituting described sound output by described average power and threshold value compares.
10. audio frequency power amplifier on-line monitoring system according to claim 9, is characterized in that, described A=15.
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| CN201510647923.0A CN105307097A (en) | 2015-10-09 | 2015-10-09 | Online monitoring method for audio power amplifier and system thereof |
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| CN103974180A (en) * | 2014-04-23 | 2014-08-06 | 广州市迪士普音响科技有限公司 | Power amplifier unit deploying method of power amplifier matrix |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040247136A1 (en) * | 2003-06-03 | 2004-12-09 | Wallace Henry B. | True RMS audio power meter |
| CN202059375U (en) * | 2011-05-20 | 2011-11-30 | 广州励丰声光科技有限公司 | Device for automatic fault detection and hot standby of power amplifier |
| US20130223635A1 (en) * | 2012-02-27 | 2013-08-29 | Cambridge Silicon Radio Limited | Low power audio detection |
| CN203279178U (en) * | 2013-05-08 | 2013-11-06 | 广州美电贝尔电业科技有限公司 | Loudspeaker fault detection apparatus |
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Application publication date: 20160203 |