CN104469614B - A kind of power amplifier failure self-repairing circuit and its implementation - Google Patents
A kind of power amplifier failure self-repairing circuit and its implementation Download PDFInfo
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- CN104469614B CN104469614B CN201410764679.1A CN201410764679A CN104469614B CN 104469614 B CN104469614 B CN 104469614B CN 201410764679 A CN201410764679 A CN 201410764679A CN 104469614 B CN104469614 B CN 104469614B
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Abstract
The invention discloses a kind of power amplifier failure self-repairing circuit and its implementation, circuit includes failure detector circuit, relay, locking module, time accumulator module and delay release circuit, first output end of failure detector circuit and the first input end of locking module connect, second output end of failure detector circuit passes sequentially through time accumulator module and delay release circuit and then is connected with the second input of locking module, and the output end of locking module and the input of relay connect.The present invention can voluntarily recover the normal work of sound system, recover without the mode manually accessed by way of being restarted again first powered-down source or again, very simple is convenient, and efficiency is higher；In addition, the interval time that failure detector circuit detects again is set by the way of exponential increasing, and coordinates locking module to complete the recovery after external disturbance eliminates, without being detected back and forth to power amplifier, it is relatively reliable and further increase operating efficiency, it can be widely applied to electronic device field.
Description
Technical field
The present invention relates to electronic device field, especially a kind of power amplifier failure self-repairing circuit and its implementation.
Background technology
Power amplifier abbreviation power amplifier, is commonly called as " sound amplifier ", is equipment most basic in sound system, and its task is handle
Ultra-weak electronic signal from signal source (being then to come from sound console in professional sound system) is amplified to be sent with drive the speaker
Sound.Power amplifier is usually operated under high current high power mode, is easily hindered (such as short trouble) for some reason and is caused whole sound equipment system
System cisco unity malfunction.Therefore, it is necessary to a power amplifier protection circuit is designed, to prevent sound system can not because of power amplifier failure
Normal work.
There is following shortcoming for current power amplifier protection circuit：1st, in power amplifying device because artificial maloperation is (such as by two outputs
Line short circuit etc.) and after breaking down, protection circuit works, and now needs the power supply for first closing whole sound system to open again again
Normal work can just be made by opening power supply, not enough simply and conveniently；2nd, disappeared in external disturbance (such as forceful electric power or thunder and lightning interference), power amplifier is extensive
After multiple normal operating conditions, the protection circuit can still be detected back and forth to power amplifier, if things go on like this, still can cause power amplifying device
Damage, it is less reliable；3rd, it is necessary to can just make the power amplifying device weight by artificial mode after the power amplifying device reparation broken down
New access sound system and normal work, it is less efficient.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is：A kind of simple and convenient, reliable and efficiency high work(is provided
Put failure self-repairing circuit.
It is another object of the present invention to：A kind of simple and convenient, reliable and efficiency high power amplifier failure self-repairing circuit is provided
Implementation method.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of power amplifier failure self-repairing circuit, including：
Failure detector circuit, for detecting power amplifier, whether there occurs failure；
Relay, for being switched on or switched off power amplifier and the connection of load；
Locking module, for locking the output of power amplifier in power amplifier failure；
Time accumulator module, for when the interval that failure detector circuit detects again is set by the way of exponential increasing
Between；
Be delayed release circuit, the locking exported for the module that unlocked after failure power amplifier recovers normal to power amplifier；
First output end of the failure detector circuit and the first input end of locking module connect, the fault detect electricity
Second output end on road passes sequentially through time accumulator module and delay release circuit and then connected with the second input of locking module
Connect, the output end of the locking module and the input of relay connect.
Further, the locking module is electronic lock or logic lock.
Further, the time accumulator module is timer IC.
Further, the locking module, time accumulator module and delay release circuit use chip microcontroller.
Another technical scheme is used by the present invention solves its technical problem：
A kind of implementation method of power amplifier failure self-repairing circuit, including：
A, whether failure detector circuit detects power amplifier there occurs failure, if so, then passing through output of the locking module to power amplifier
Locked and perform step B, conversely, then flow terminates；
B, failure detector circuit detects again according to the interval time that time accumulator module is currently set to power amplifier, sentences
Whether disconnected power amplifier has recovered normal, if so, step C is then performed, conversely, then waiting the interval time of next setting to arrive；
C, delay release circuit unlocks the locking of output of the module to power amplifier.
Further, the interval time that the time accumulator module is set as m, 2m, 4m, 8m ..., 2n× m, wherein, m is first
Beginning time interval, n are natural number.
A kind of beneficial effect of power amplifier failure self-repairing circuit of the present invention is：Including locking module, time accumulator module and
Be delayed release circuit, can voluntarily recover the normal work of sound system, without by way of first powered-down source is restarted again or artificial
The mode that accesses again is recovered, and very simple is convenient, and efficiency is higher；In addition, time accumulator module uses the side of exponential increasing
The interval time that formula setting failure detector circuit detects again, and coordinate locking module to complete the recovery after external disturbance eliminates,
It is relatively reliable and further increase operating efficiency without being detected back and forth to power amplifier.
A kind of beneficial effect of the implementation method of power amplifier failure self-repairing circuit of the present invention is：Failure detector circuit detects
Power amplifier is locked after breaking down by output of the locking module to power amplifier, and between currently being set according to time accumulator module
Judge whether power amplifier has recovered normal every the time, unlocked output of the module to power amplifier by the release circuit that is delayed if normal
Locking so that sound system is resumed work automatically, without artificial accessing by way of first powered-down source is restarted again or again
Mode is recovered, and very simple is convenient, and efficiency is higher and more reliable.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of functional block diagram of power amplifier failure self-repairing circuit of the present invention；
Fig. 2 is a kind of step flow chart of the implementation method of power amplifier failure self-repairing circuit of the present invention.
Embodiment
Reference picture 1, a kind of power amplifier failure self-repairing circuit, including：
Failure detector circuit, for detecting power amplifier, whether there occurs failure；
Relay, for being switched on or switched off power amplifier and the connection of load；
Locking module, for locking the output of power amplifier in power amplifier failure；
Time accumulator module, for when the interval that failure detector circuit detects again is set by the way of exponential increasing
Between；
Be delayed release circuit, the locking exported for the module that unlocked after failure power amplifier recovers normal to power amplifier；
First output end of the failure detector circuit and the first input end of locking module connect, the fault detect electricity
Second output end on road passes sequentially through time accumulator module and delay release circuit and then connected with the second input of locking module
Connect, the output end of the locking module and the input of relay connect.
Preferred embodiment is further used as, the locking module is electronic lock or logic lock.
Preferred embodiment is further used as, the time accumulator module is timer IC.
Preferred embodiment is further used as, the locking module, time accumulator module and delay release circuit are adopted
Use chip microcontroller.
Reference picture 2, a kind of implementation method of power amplifier failure self-repairing circuit, including：
A, whether failure detector circuit detects power amplifier there occurs failure, if so, then passing through output of the locking module to power amplifier
Locked and perform step B, conversely, then flow terminates；
B, failure detector circuit detects again according to the interval time that time accumulator module is currently set to power amplifier, sentences
Whether disconnected power amplifier has recovered normal, if so, step C is then performed, conversely, then waiting the interval time of next setting to arrive；
C, delay release circuit unlocks the locking of output of the module to power amplifier.
Be further used as preferred embodiment, the interval time that the time accumulator module is set as m, 2m, 4m,
8m,…,2n× m, wherein, m is initial interval, and n is natural number.
The present invention is described in further detail with reference to Figure of description and specific embodiment.
Referring to Figures 1 and 2, the first embodiment of the present invention：
Using the time interval that time accumulator module is set as 2s, 4s, 8s ..., 4096s (m=2s, n=0,1,2 ..., 12)
Exemplified by, the course of work of the invention is：
First, the power amplifier signal of failure detector circuit detection collection, whether power amplifier is judged there occurs failure, if power amplifier occurs
The failures such as excessively stream, overvoltage or overload, then locked by output of the locking module to power amplifier, then again by event after 2s
Whether the power amplifier that barrier detection electric circuit inspection breaks down recovers normal：If not recovering normal, examined after 4s again by failure
Whether the power amplifier that slowdown monitoring circuit detection is broken down recovers normal ..., so moves in circles, and occurs until failure detector circuit detects
The power amplifier of failure (continues to detect) if detecting to 4096s untill recovering normal containing fault-signal, stopping.Detect appearance
After the power amplifier of failure has recovered, the locking for output of the module to power amplifier that now then unlocked by the release circuit that is delayed, so as to
Sound system is set to resume work.
Compared with prior art, the present invention includes locking module, time accumulator module and delay release circuit, can be voluntarily extensive
The normal work of complex tone acoustic system, recover without the mode manually accessed by way of being restarted again first powered-down source or again, ten
It is point simple and convenient, and efficiency is higher；In addition, time accumulator module sets failure detector circuit again by the way of exponential increasing
The interval time of detection, and coordinate locking module to complete the recovery after external disturbance eliminates, without being detected back and forth to power amplifier,
It is relatively reliable and further increase operating efficiency.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
- A kind of 1. power amplifier failure self-repairing circuit, it is characterised in that：Including：Failure detector circuit, for detecting power amplifier, whether there occurs failure；Relay, for being switched on or switched off power amplifier and the connection of load；Locking module, for locking the output of power amplifier in power amplifier failure；Time accumulator module, the interval time detected again for setting failure detector circuit by the way of exponential increasing；Be delayed release circuit, the locking exported for the module that unlocked after failure power amplifier recovers normal to power amplifier；First output end of the failure detector circuit and the first input end of locking module connect, the failure detector circuit Second output end passes sequentially through time accumulator module and delay release circuit and then is connected with the second input of locking module, institute State the output end of locking module and the input of relay connects.
- A kind of 2. power amplifier failure self-repairing circuit according to claim 1, it is characterised in that：The locking module is electronics Lock or logic lock.
- A kind of 3. power amplifier failure self-repairing circuit according to claim 1, it is characterised in that：The time accumulator module is Timer IC.
- A kind of 4. power amplifier failure self-repairing circuit according to claim 1, it is characterised in that：The locking module, time Accumulator module and delay release circuit use chip microcontroller.
- A kind of 5. realization side of power amplifier failure self-repairing circuit using power amplifier failure self-repairing circuit as claimed in claim 1 Method, it is characterised in that：Including：A, whether failure detector circuit detects power amplifier there occurs failure, if so, then being carried out by output of the locking module to power amplifier Lock and perform step B, conversely, then flow terminates；B, failure detector circuit detects again according to the interval time that time accumulator module is currently set to power amplifier, judges work( Put and whether recovered normal, if so, step C is then performed, conversely, then waiting the interval time of next setting to arrive；C, delay release circuit unlocks the locking of output of the module to power amplifier；The interval time that the time accumulator module is set as m, 2m, 4m, 8m ..., 2n× m, wherein, m is initial interval, n For natural number.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410764679.1A CN104469614B (en) | 2014-12-12 | 2014-12-12 | A kind of power amplifier failure self-repairing circuit and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410764679.1A CN104469614B (en) | 2014-12-12 | 2014-12-12 | A kind of power amplifier failure self-repairing circuit and its implementation |
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| CN104469614A CN104469614A (en) | 2015-03-25 |
| CN104469614B true CN104469614B (en) | 2018-01-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155933B (en) * | 2015-08-18 | 2018-03-20 | 黑子信息科技（广东）有限公司 | Be delayed unlocking feature and remote control and lockset and delay unlocking method |
| CN110968350B (en) * | 2018-09-30 | 2023-07-07 | 成都鼎桥通信技术有限公司 | Power amplifier control method and device |
| CN111917127B (en) * | 2020-07-10 | 2022-05-03 | 爱士惟新能源技术(江苏)有限公司 | Control method and system for GFCI circuit of photovoltaic inverter |
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| KR20060009165A (en) * | 2004-07-21 | 2006-01-31 | 진옥상 | Output stage protection circuit |
| CN201490973U (en) * | 2009-08-28 | 2010-05-26 | 四川湖山电器有限责任公司 | Overload protective device of power amplifier |
| CN202889291U (en) * | 2012-10-17 | 2013-04-17 | 广州市迪士普音响科技有限公司 | Power amplifier protective circuit |
| WO2013097355A1 (en) * | 2011-12-30 | 2013-07-04 | 中兴通讯股份有限公司 | Method and device for power amplifier protection in digital predistortion |
| CN103515922A (en) * | 2012-06-25 | 2014-01-15 | 中国人民解放军理工大学 | Self-recovery and overcurrent protection circuit for power amplifier integrated circuit |
| CN103648075A (en) * | 2013-12-16 | 2014-03-19 | 惠州华阳通用电子有限公司 | Device and method for automatically detecting abnormality of power amplifier |
-
2014
- 2014-12-12 CN CN201410764679.1A patent/CN104469614B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060009165A (en) * | 2004-07-21 | 2006-01-31 | 진옥상 | Output stage protection circuit |
| CN201490973U (en) * | 2009-08-28 | 2010-05-26 | 四川湖山电器有限责任公司 | Overload protective device of power amplifier |
| WO2013097355A1 (en) * | 2011-12-30 | 2013-07-04 | 中兴通讯股份有限公司 | Method and device for power amplifier protection in digital predistortion |
| CN103515922A (en) * | 2012-06-25 | 2014-01-15 | 中国人民解放军理工大学 | Self-recovery and overcurrent protection circuit for power amplifier integrated circuit |
| CN202889291U (en) * | 2012-10-17 | 2013-04-17 | 广州市迪士普音响科技有限公司 | Power amplifier protective circuit |
| CN103648075A (en) * | 2013-12-16 | 2014-03-19 | 惠州华阳通用电子有限公司 | Device and method for automatically detecting abnormality of power amplifier |
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| CN104469614A (en) | 2015-03-25 |
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