CN104469614A - Power amplifier fault self-recovery circuit and implementation method thereof - Google Patents
Power amplifier fault self-recovery circuit and implementation method thereof Download PDFInfo
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- CN104469614A CN104469614A CN201410764679.1A CN201410764679A CN104469614A CN 104469614 A CN104469614 A CN 104469614A CN 201410764679 A CN201410764679 A CN 201410764679A CN 104469614 A CN104469614 A CN 104469614A
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Abstract
The invention discloses a power amplifier fault self-recovery circuit and an implementation method of the circuit. The circuit comprises a fault detection circuit, a relay, a locking module, a time accumulation module and a delay unlocking circuit, wherein the first output end of the fault detection circuit is connected with the first input end of the locking module, the second output end of the fault detection circuit is connected with the second input end of the locking module sequentially through the time accumulation module and the delay unlocking circuit, and the output end of the locking module is connected with the input end of the relay. Due to the power amplifier fault self-recovery circuit and the implementation method of the circuit, self-recovery of normal work of a loudspeaker system can be achieved, recovery can be achieved without needing the mode that firstly, a power source is cut off and then is restarted or the power source is manually connected in, operation is very easy and convenient, and efficiency is high. Besides, the interval time of a fault detection circuit for detection again is set in an index progressive increase mode, recovery performed after external disturbance is eliminated is completed through the locking module, a power amplifier does not need to be detected repeatedly, reliability is higher, working efficiency is further improved, and the power amplifier fault self-recovery circuit can be widely applied to the field of electronic devices.
Description
Technical field
The present invention relates to electronic device field, especially a kind of power amplifier fault self-repairing circuit and its implementation.
Background technology
Power amplifier is called for short power amplifier, and being commonly called as " sound amplifier ", is equipment the most basic in sound system, and its task is that the ultra-weak electronic signal from signal source (being then from sound console in professional sound system) is carried out amplifying to drive loud speaker to sound.Under power amplifier is usually operated at big current high power mode, easily cause whole sound system cisco unity malfunction because of fault (as short trouble).Therefore, be necessary to design a power amplifier protective circuit, with prevent sound system because of power amplifier fault cisco unity malfunction.
Current power amplifier protective circuit also exists following shortcoming: 1, at power amplifying device because people is for misoperation (as by two output line short circuits etc.) and after breaking down, protective circuit works, now need the power supply of first closing whole sound system to reopen power supply again and just can make normal work, simple not and convenient; 2, disappear in external disturbance (as forceful electric power or thunder and lightning interference), after power amplifier recovers normal operating conditions, this protective circuit still can detect power amplifier back and forth, if things go on like this, power amplifying device still can be caused to damage, not reliably; 3, after the power amplifying device broken down is repaired, need this power amplifying device just can be made again to access sound system by artificial mode and normally work, efficiency is lower.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the invention is: a kind of simple and convenient, reliable and power amplifier fault self-repairing circuit that efficiency is high is provided.
Another object of the present invention is: the implementation method providing a kind of simple and convenient, reliable and power amplifier fault self-repairing circuit that efficiency is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of power amplifier fault self-repairing circuit, comprising:
Whether failure detector circuit, there occurs fault for detecting power amplifier;
Relay, for being switched on or switched off the connection of power amplifier and load;
Locking module, for the output of the locking power amplifier when power amplifier fault;
Time accumulator module, the interval time setting failure detector circuit for adopting the mode of exponential increasing and again detect;
Time delay release circuit, for the locking that the module that unlocks after the recovery of fault power amplifier is normal exports power amplifier;
First output of described failure detector circuit is connected with the first input end of locking module, second output of described failure detector circuit is connected with time delay release circuit and then with the second input of locking module by time accumulator module successively, and the output of described locking module is connected with the input of relay.
Further, described locking module is electronic lock or logic lock.
Further, described time accumulator module is timer IC.
Further, described locking module, time accumulator module and time delay release circuit all adopt chip microcontroller.
The present invention solves another technical scheme that its technical problem adopts:
An implementation method for power amplifier fault self-repairing circuit, comprising:
A, failure detector circuit detect power amplifier and whether there occurs fault, if so, then locked by the output of locking module to power amplifier and performed step B, otherwise then flow process terminates;
B, failure detector circuit detected power amplifier again according to the interval time of the current setting of time accumulator module, judged whether power amplifier has recovered normal, if so, then performed step C, otherwise, then wait for that the interval time of next setting arrives;
C, time delay release circuit unlock the locking of module to the output of power amplifier.
Further, the interval time of described time accumulator module setting is m, 2m, 4m, 8m ..., 2
n× m, wherein, m is initial interval, and n is natural number.
The beneficial effect of a kind of power amplifier fault of the present invention self-repairing circuit is: comprise locking module, time accumulator module and time delay release circuit, the normal work of sound system can be recovered voluntarily, without the need to by first closing the mode that power supply restarts again or the mode manually accessed again is recovered, very simple and convenient, and efficiency is higher; In addition, the interval time that time accumulator module adopts the mode of exponential increasing to set failure detector circuit again to detect, and coordinate locking module complete external disturbance eliminate after recovery, need not detect back and forth power amplifier, more reliable and further increase operating efficiency.
The beneficial effect of the implementation method of a kind of power amplifier fault of the present invention self-repairing circuit is: failure detector circuit detects that power amplifier is locked by the output of locking module to power amplifier after breaking down, and according to judging whether power amplifier has recovered normal the interval time of the current setting of time accumulator module, if normal, to be unlocked the locking of module to the output of power amplifier by time delay release circuit, thus sound system is resumed work automatically, without the need to by first closing the mode that power supply restarts again or the mode manually accessed again is recovered, very simple and convenient, efficiency is higher and comparatively reliable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the functional block diagram of a kind of power amplifier fault of the present invention self-repairing circuit;
Fig. 2 is the flow chart of steps of the implementation method of a kind of power amplifier fault of the present invention self-repairing circuit.
Embodiment
With reference to Fig. 1, a kind of power amplifier fault self-repairing circuit, comprising:
Whether failure detector circuit, there occurs fault for detecting power amplifier;
Relay, for being switched on or switched off the connection of power amplifier and load;
Locking module, for the output of the locking power amplifier when power amplifier fault;
Time accumulator module, the interval time setting failure detector circuit for adopting the mode of exponential increasing and again detect;
Time delay release circuit, for the locking that the module that unlocks after the recovery of fault power amplifier is normal exports power amplifier;
First output of described failure detector circuit is connected with the first input end of locking module, second output of described failure detector circuit is connected with time delay release circuit and then with the second input of locking module by time accumulator module successively, and the output of described locking module is connected with the input of relay.
Be further used as preferred embodiment, described locking module is electronic lock or logic lock.
Be further used as preferred embodiment, described time accumulator module is timer IC.
Be further used as preferred embodiment, described locking module, time accumulator module and time delay release circuit all adopt chip microcontroller.
With reference to Fig. 2, a kind of implementation method of power amplifier fault self-repairing circuit, comprising:
A, failure detector circuit detect power amplifier and whether there occurs fault, if so, then locked by the output of locking module to power amplifier and performed step B, otherwise then flow process terminates;
B, failure detector circuit detected power amplifier again according to the interval time of the current setting of time accumulator module, judged whether power amplifier has recovered normal, if so, then performed step C, otherwise, then wait for that the interval time of next setting arrives;
C, time delay release circuit unlock the locking of module to the output of power amplifier.
Be further used as preferred embodiment, the interval time of described time accumulator module setting is m, 2m, 4m, 8m ..., 2
n× m, wherein, m is initial interval, and n is natural number.
Below in conjunction with Figure of description and specific embodiment, the present invention is described in further detail.
See figures.1.and.2, the first embodiment of the present invention:
The time interval set with time accumulator module as 2s, 4s, 8s ..., 4096s(m=2s, n=0,1,2 ..., 12) and be example, the course of work of the present invention is:
First, failure detector circuit detects the power amplifier signal gathered, judge whether power amplifier there occurs fault, generation overcurrent is put in painstaking effort, the fault such as overvoltage or overload, then locked by the output of locking module to power amplifier, then after 2s, again detect by failure detector circuit the power amplifier broken down and whether recover normal: if do not recover normal, then after 4s, again detect by failure detector circuit the power amplifier broken down and whether recover normal, so move in circles, until failure detector circuit detects the power amplifier broken down recover normal (if detect containing fault-signal to 4096s, then stop continuing to detect).After detecting that the power amplifier broken down recovers, now then to be unlocked the locking of module to the output of power amplifier by time delay release circuit, thus sound system is resumed work.
Compared with prior art, the present invention includes locking module, time accumulator module and time delay release circuit, the normal work of sound system can be recovered voluntarily, without the need to by first closing the mode that power supply restarts again or the mode manually accessed again is recovered, very simple and convenient, and efficiency is higher; In addition, the interval time that time accumulator module adopts the mode of exponential increasing to set failure detector circuit again to detect, and coordinate locking module complete external disturbance eliminate after recovery, need not detect back and forth power amplifier, more reliable and further increase operating efficiency.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (6)
1. a power amplifier fault self-repairing circuit, is characterized in that: comprising:
Whether failure detector circuit, there occurs fault for detecting power amplifier;
Relay, for being switched on or switched off the connection of power amplifier and load;
Locking module, for the output of the locking power amplifier when power amplifier fault;
Time accumulator module, the interval time setting failure detector circuit for adopting the mode of exponential increasing and again detect;
Time delay release circuit, for the locking that the module that unlocks after the recovery of fault power amplifier is normal exports power amplifier;
First output of described failure detector circuit is connected with the first input end of locking module, second output of described failure detector circuit is connected with time delay release circuit and then with the second input of locking module by time accumulator module successively, and the output of described locking module is connected with the input of relay.
2. a kind of power amplifier fault self-repairing circuit according to claim 1, is characterized in that: described locking module is electronic lock or logic lock.
3. a kind of power amplifier fault self-repairing circuit according to claim 1, is characterized in that: described time accumulator module is timer IC.
4. a kind of power amplifier fault self-repairing circuit according to claim 1, is characterized in that: described locking module, time accumulator module and time delay release circuit all adopt chip microcontroller.
5. adopt the implementation method of a kind of power amplifier fault self-repairing circuit of power amplifier fault self-repairing circuit as claimed in claim 1, it is characterized in that: comprising:
A, failure detector circuit detect power amplifier and whether there occurs fault, if so, then locked by the output of locking module to power amplifier and performed step B, otherwise then flow process terminates;
B, failure detector circuit detected power amplifier again according to the interval time of the current setting of time accumulator module, judged whether power amplifier has recovered normal, if so, then performed step C, otherwise, then wait for that the interval time of next setting arrives;
C, time delay release circuit unlock the locking of module to the output of power amplifier.
6. the implementation method of a kind of power amplifier fault self-repairing circuit as claimed in claim 5, is characterized in that: the interval time of described time accumulator module setting is m, 2m, 4m, 8m ..., 2
n× m, wherein, m is initial interval, and n is natural number.
Priority Applications (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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| 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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| Publication Number | Publication Date |
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| CN104469614A true CN104469614A (en) | 2015-03-25 |
| CN104469614B CN104469614B (en) | 2018-01-09 |
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| CN201410764679.1A Active CN104469614B (en) | 2014-12-12 | 2014-12-12 | A kind of power amplifier failure self-repairing circuit and its implementation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155933A (en) * | 2015-08-18 | 2015-12-16 | 施萍 | Delaying and unlocking part, remote control device and lockset using delaying and unlocking part as well as delaying and unlocking method |
| CN110968350A (en) * | 2018-09-30 | 2020-04-07 | 成都鼎桥通信技术有限公司 | Power amplifier control method and device |
| CN111917127A (en) * | 2020-07-10 | 2020-11-10 | 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 |
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2014
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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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155933A (en) * | 2015-08-18 | 2015-12-16 | 施萍 | Delaying and unlocking part, remote control device and lockset using delaying and unlocking part as well as delaying and unlocking method |
| CN110968350A (en) * | 2018-09-30 | 2020-04-07 | 成都鼎桥通信技术有限公司 | Power amplifier control method and device |
| CN111917127A (en) * | 2020-07-10 | 2020-11-10 | 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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| Publication number | Publication date |
|---|---|
| CN104469614B (en) | 2018-01-09 |
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