CN106972466A - Power control and method - Google Patents
Power control and method Download PDFInfo
- Publication number
- CN106972466A CN106972466A CN201710118362.4A CN201710118362A CN106972466A CN 106972466 A CN106972466 A CN 106972466A CN 201710118362 A CN201710118362 A CN 201710118362A CN 106972466 A CN106972466 A CN 106972466A
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- Prior art keywords
- power
- signal
- task
- power supply
- control
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
Abstract
This application discloses a kind of power control and method.The power control includes：Control module, for creating power interruptions task, it is at wait state, reference signal is provided, and trigger power interruptions task in the case where receiving the pulse signal of second electrical level to interrupt the task unrelated with power cutoff, after triggering power interruptions task, control signal is sent by power remove to power supply；And comparison module, for obtaining sampled signal from power supply, in the case of amplitude of the amplitude less than or equal to reference signal of sampled signal, the pulse signal of the first level is exported, in the case of amplitude of the amplitude higher than reference signal of sampled signal, the pulse signal of second electrical level is exported.The power control judges whether power supply is abnormal, is exported in abnormity of power supply by control module power cutoff, reduces the response time for abnormity of power supply, make power protection relatively reliable by comparison module.
Description
Technical field
Technical field is supplied the present invention relates to power supply, more particularly, to a kind of power control and method.
Background technology
The problem of not only considering to export correct during power system design, is often contemplated that asking for output protection
Topic.When power output end voltage, electric current exceed preset value, start the measures such as power-off immediately and itself and load are protected
Shield, is extremely necessary.Fig. 1 shows the schematic block diagram of the power control according to prior art, power control
100 include controller 101 and analog to digital conversion circuit 102.Common practice is output of the analog to digital conversion circuit 102 to power supply 200
Sampled, obtain output voltage, the analog signal of electric current, analog signal is obtained after being handled via analog to digital conversion circuit 102
To corresponding data signal.Controller 101 constantly obtains the corresponding data signal, and pass through from analog to digital conversion circuit 102
Calculating processing makes it corresponding with output voltage, the electric current of power supply 200.When sampled value is more than preset value, controller 101 passes through
Control signal closes power supply 200, implements protection.Fig. 2 shows the flow chart of the power control method according to prior art, in step
In rapid S201, controller performs power supply task after starting and judges whether power supply output information normal, if numerical value normally if perform
Step S202, step S203, continue executing with other tasks beyond power supply task, and step S204 is performed afterwards and judges whether to receive
To shutdown command, shutdown command is not such as obtained, then returns and performs step S201, is circulated above procedure, is such as obtained shutdown command, then
Step S205 is performed, power supply is turned off.As judged in step s 201, power supply output information is abnormal, then is transferred to step immediately
S205, is turned off to power supply.
Power supply output is monitored although can be realized using above technical scheme, existed in actual use following
Shortcoming：
First, controller 101 is exported, it is necessary to operate analog to digital conversion circuit 102 to carry out signal in order to monitor power supply
Conversion, needs to be read out from analog to digital conversion circuit 102 after conversion, needs to carry out processing judgement to data after reading.Completion is sentenced
Controller 101 could be operated to abnormity of power supply after reading.This series of process needs to consume for quite a long time could be complete
Into.
In addition, controller 101 generally requires to handle the mode performed for order between multiple tasks, task.Only work as control
Device 101 processed can just obtain power supply output state when performing power supply task.When performing other tasks outside power supply task, power supply
In without monitor state.And the execution time of other tasks is not fixed.Therefore, when controller 101 is to the response of abnormity of power supply
Between can not know yet.
Due to above reason, the power control and method of prior art are slow to the response speed of abnormity of power supply, to electricity
The reliability of source output protection is low.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of power control and method, to shorten for electricity
The source abnormal response time, lift the reliability of power supply output protection.
According to an aspect of the present invention there is provided a kind of power control, including：Control module, for creating in power supply
Disconnected task, makes the power interruptions task be waited for there is provided reference signal, and believes in the pulse for receiving second electrical level
The power interruptions task is triggered in the case of number to interrupt the task unrelated with power cutoff, is appointed triggering the power interruptions
After business, control signal is sent by the power remove to power supply；And comparison module, for obtaining sampling letter from the power supply
Number, in the case of amplitude of the amplitude less than or equal to the reference signal of the sampled signal, export the arteries and veins of the first level
Signal is rushed, in the case of amplitude of the amplitude higher than the reference signal of the sampled signal, the second electrical level is exported
Pulse signal.
Preferably, the power supply includes analog power, and the control module includes：Reference signal generation unit：For giving birth to
Into digital reference signal；Digital analog converter, described in being supplied to according to digital reference signal generation analog
Comparison module.
Preferably, the control module is in the case where receiving the pulse signal of the second electrical level, if be not carried out
The task unrelated with power cutoff, then do not trigger the power interruptions task, sends the control signal to the power supply immediately
By the power remove.
Preferably, the control module is additionally operable in the case where receiving shutdown command, completes current duty cycle
Afterwards, by sending the control signal by the power remove to the power supply.
Preferably, the control module in preset duration, is sent after the power interruptions task is triggered to the power supply
The control signal is by the power remove.
According to another aspect of the present invention there is provided a kind of power control method, including：Power interruptions task is created, makes institute
Power interruptions task is stated to be waited for；Reference signal is provided；Sampled signal is obtained from power supply, in the width of the sampled signal
In the case of amplitude of the value less than or equal to the reference signal, the pulse signal of the first level is exported, in the sampled signal
Amplitude higher than the reference signal amplitude in the case of, export second electrical level pulse signal；Receiving described second
The power interruptions task is triggered in the case of the pulse signal of level to interrupt the task unrelated with power cutoff, in triggering institute
State after power interruptions task, control signal is sent by the power remove to power supply.
Preferably, the power supply includes analog power, and the offer reference signal includes：Generate digital reference signal, root
Analog is provided according to the digital reference signal.
Preferably, the power control method also includes：In the case where receiving the pulse signal of the second electrical level,
If being not carried out the task unrelated with power cutoff, the power interruptions task is not triggered, sends institute to the power supply immediately
Control signal is stated by the power remove.
Preferably, the power control method also includes：In the case where receiving shutdown command, current task is completed
After circulation, by sending the control signal by power remove to power supply.
Preferably, it is described after the power interruptions task is triggered, send control signal to power supply and close the power supply
It is disconnected to include：After the power interruptions task is triggered in preset duration, sending the control signal to the power supply will be described
Power remove.
Power control according to embodiments of the present invention and method, control module need not operate analog to digital conversion circuit to letter
Number changed to monitor power supply output, obtained number is converted according to the analog signal of power supply without being read from analog to digital conversion circuit
Processing judgement is carried out after word signal, but directly abnormity of power supply is operated according to the pulse signal of contrast module, is reduced
For the response time of abnormity of power supply.Without adding power supply task in the duty cycle of control module, but it is pre-created electricity
Source interrupt task, when control module performs other tasks, power interruptions task is waited for.In abnormity of power supply, control
The task that molding block triggering power interruptions task is carrying out with interrupting, is afterwards closed power supply by sending control signal to power supply
It is disconnected.Avoid controller in the prior art only can just obtain power supply output state whether to judge power supply when performing power supply task
Abnormal defect, not only shortens the response time for abnormity of power supply, and improve the reliability of power supply output protection.
Brief description of the drawings
By description referring to the drawings to the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the schematic block diagram of the power control according to prior art.
Fig. 2 shows the flow chart of the power control method according to prior art.
Fig. 3 shows the schematic block diagram of the power control of the embodiment of the present invention.
Fig. 4 shows the schematic block diagram of the power control of the embodiment of the present invention.
Fig. 5 shows the flow chart of the power control method of the embodiment of the present invention.
Fig. 6 shows the flow chart of the power control method of the embodiment of the present invention.
Embodiment
Various embodiments of the present invention are more fully described hereinafter with reference to accompanying drawing.In various figures, identical element
Represented using same or similar reference.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.
Fig. 3 shows the schematic block diagram of the power control of the embodiment of the present invention, and power control 300 includes：Control
Molding block 301 and comparison module 302.Power supply 200 is also show in Fig. 3, power supply 200 can be constituted with power control 300
One power-supply system.
Control module 301 is used to generate reference signal, and according to the shut-off of pulse signal control power supply 200.
The reference signal can correspond to a specified magnitude of voltage or a specified current value.Control module 301
Can the pulse signal received by the first level saltus step be second electrical level in the case of, by power supply 200 send control
Signal turns off power supply 200.In certain embodiments, control module 301 can be in the pulse signal received by the first electricity
In the case that flat saltus step is second electrical level, trigger the power interruptions task being waited for that is pre-created to interrupt itself just
In the task of execution, after being carrying out for the task is interrupted, the control signal is sent by electricity to power supply 200 immediately
Source 200 is turned off.Control module 301 in preset duration, need to send control letter after the power interruptions task is triggered to power supply 200
Number power supply 200 is turned off.Control module 301 can create the power interruptions task on startup, and be at waiting
State.The pulse signal received by the first level saltus step be second electrical level in the case of can first judge whether to be carrying out
The task unrelated with power cutoff, if it is, the power interruptions task being waited for that is pre-created of triggering with
Interrupt the task unrelated with power cutoff.If not being carrying out the task unrelated with power cutoff, directly to electricity
Source sends control signal and is switched off.In certain embodiments, control module 301 is additionally operable to receiving the situation of shutdown command
Under, after current duty cycle is completed, power supply 200 is turned off by sending control signal to power supply 200.
Comparison module 302 is used to obtain sampled signal, the relatively sampled signal and the reference signal from power supply 200,
The pulse signal is sent to control module 301 according to comparative result.
The sampled signal can be obtained according to electric power outputting current sampling, can also be adopted according to electric power output voltage
Sample is obtained.Comparison module 302 is in the case of amplitude of the amplitude less than or equal to reference signal of sampled signal, the electricity of output first
Flat pulse signal, in the case of amplitude of the amplitude higher than reference signal of sampled signal, the pulse letter of output second electrical level
Number.
Fig. 4 shows the schematic block diagram of the power control of the embodiment of the present invention.Power control 400 can be directed to mould
Intend power supply to be controlled, including：Controller 3011, digital analog converter 3012 and comparison module 302.Power supply is also show in Fig. 4
200, power supply 200 can be analog power, and power supply 200 can constitute a power-supply system with power control 400.
It has been described in detail, has will not be described in detail herein compared with module 302 by contrast above in association with Fig. 3.For simulation
When power supply is controlled, comparison module 302 can be a voltage comparator, and comparison module 302 can pass through first input end
The output voltage of power supply 200 is sampled.
Controller 3011 can generate digital reference signal, and according to the shut-off of pulse signal control power supply 200.Control
Device 3011 processed can control digital analog converter 3012 to export corresponding analog by the digital reference signal.Control
One external interrupt unit can be set in device 3011, and the pulse signal is inputted the external interrupt list by comparison module 302
Member.
Digital analog converter 3012 can generate analog according to the digital reference signal, and the simulation is joined
Examine the second input that signal inputs comparison module 302.
In the present embodiment, different from the power control of the prior art shown in Fig. 1, control module need not operate mould
Number change-over circuit is changed to analog signal to monitor power supply output, without reading the mould according to power supply from analog to digital conversion circuit
Processing judgement is carried out after intending the digital reference signal that signal conversion is obtained, but directly according to the pulse signal of contrast module to electricity
Source is operated extremely.Reduce the response time for abnormity of power supply.Control module is appointed without performing power supply in duty cycle
Business, but power interruptions task is pre-created, when performing other tasks, it is waited for power interruptions task.In electricity
When source is abnormal, control module triggering power interruptions task, to interrupt itself being carrying out for task, afterwards by being sent to power supply
Control signal is by power remove.Avoid controller in the prior art only can just obtain power supply output shape when performing power supply task
State not only shortens the response time for abnormity of power supply to judge defect that whether power supply is abnormal, and it is defeated to improve power supply
Go out the reliability of protection.
Fig. 5 shows the flow chart of the power control method of the embodiment of the present invention.
In step S501, power interruptions task is created, the power interruptions task is waited for.
There is provided reference signal in step S502.
Analog power can be controlled using the power control method of the present embodiment, digital reference signal, then root can be generated
Analog is provided according to digital reference signal.The reference signal can correspond to a specified magnitude of voltage or a volume
Fixed current value.
In step S503, sampled signal is obtained from power supply.
The sampled signal can be obtained according to electric power outputting current sampling, can also be adopted according to electric power output voltage
Sample is obtained.
In step S504, judge whether the amplitude of sampled signal is more than the amplitude of reference signal.It is to perform step
S506, otherwise performs step S505.
In step S505, the pulse signal of the first level is exported.
In step S506, the pulse signal of second electrical level is exported.
In step s 507, the power interruptions task is triggered to interrupt the task unrelated with power cutoff.
In certain embodiments, in the case where receiving the pulse signal of the second electrical level, if being not carried out and closing
The unrelated task in power-off source, then do not trigger the power interruptions task, be immediately performed step S508.In the pulse signal received
By the first level saltus step can first to judge whether to be carrying out the task unrelated with power cutoff in the case of second electrical level, such as
Fruit is that the power interruptions task being waited for that then triggering is pre-created is described unrelated with power cutoff to interrupt
Task.If not being carrying out the task unrelated with power cutoff, directly send control signal to power supply and be switched off.
In step S508, control signal is sent by the power remove to power supply.
After the power interruptions task is triggered in preset duration, sending the control signal to the power supply will be described
Power remove.In certain embodiments, shutdown command is such as received, then after current duty cycle is completed, by power supply
Control signal is sent by power remove.
Fig. 6 shows the flow chart of the power control method of the embodiment of the present invention.
In step s 601, power interruptions task is created.
A power interruptions task is created to Power Supply Monitoring first.Then controller can be made to start the circulation of other tasks
Perform, such as task A, task B circulation are performed.
In step S602, task A is performed.
In step S603, task B is performed.
Above step S602 and step S603 only be citing, can also have in certain embodiments task C, task D and
The circulation of other tasks is performed.
In step s 604, judge whether to receive shutdown command.It is then to perform step S608, otherwise performs step
S602。
When completing a duty cycle, it is made whether to receive the judgement of shutdown command.
In step s 605, judge whether power supply output information is normal.It is then to perform step S606, otherwise performs step
S607。
The reference of output is controlled to believe by controller if the amplitude of the sampled signal obtained from power supply sampling is less than or equal to
Number amplitude, then it is assumed that power supply output information be it is normal, it is otherwise abnormal.
In step S606, it is waited for power interruptions task.Step S605 is performed afterwards.
While circulating execution task, power interruptions task is waited for.Power interruptions task is waited for
In the case of, it is necessary to step S605 be continued executing with, to judge whether power supply output information normal.
In step S607, the task that interrupt signal forced interruption is carrying out is produced.
In the case of power supply output information is abnormal, the pulse signal of a saltus step can be produced, is triggered by pulse edge
Controller produces power failure signal.Task A, task B that power failure signal can be carrying out with forced interruption etc. other
Business, is completed without waiting for duty cycle.In certain embodiments, in the case of power supply output information is abnormal, can first it sentence
It is disconnected whether to be carrying out the task unrelated with power cutoff.If it is, producing power interruptions letter along trigger controller by pulse
Number to interrupt the task unrelated with power cutoff, if not being carrying out the task unrelated with power cutoff, directly
Perform step S608.
In step S608, power cutoff.
Power supply output can be turned off by sending control signal to power supply.In some embodiments, it is desirable to complete
Scheduled duration is waited to perform step S608 again to make the task in the duty cycle being carrying out can be with complete after step S607
It is interrupted entirely.
In the present embodiment, it is different from the power control method of the prior art shown in Fig. 2, without adding in duty cycle
Enter power supply task, but be pre-created power interruptions task, when performing other tasks, be in power interruptions task and wait shape
State.In abnormity of power supply, the task that triggering power interruptions task is carrying out with interrupting, and by sending control signal to power supply
By power remove.Avoid controller in the prior art only can just obtain power supply output state to judge when performing power supply task
The whether abnormal defect of power supply, not only shortens the response time for abnormity of power supply, and improve power supply output protection
Reliability.
According to embodiments of the invention as described above, these embodiments do not have all details of detailed descriptionthe, not yet
It is only described specific embodiment to limit the invention.Obviously, as described above, it can make many modifications and variations.This explanation
Book is chosen and specifically describes these embodiments, is in order to preferably explain the principle and practical application of the present invention, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its four corner and equivalent.
Claims (10)
1. a kind of power control, it is characterised in that including：
Control module, for creating power interruptions task, being waited for the power interruptions task, there is provided with reference to letter
Number, and in the case where receiving the pulse signal of second electrical level trigger the power interruptions task with interrupt with power cutoff without
The task of pass, after the power interruptions task is triggered, control signal is sent by the power remove to power supply；And
Comparison module, for obtaining sampled signal from the power supply, is less than or equal to the ginseng in the amplitude of the sampled signal
In the case of the amplitude for examining signal, the pulse signal of the first level is exported, is higher than the reference in the amplitude of the sampled signal
In the case of the amplitude of signal, the pulse signal of the second electrical level is exported.
2. power control according to claim 1, it is characterised in that the power supply includes analog power, the control
Molding block includes：
Reference signal generation unit：For generating digital reference signal；
Digital analog converter, the comparison module is supplied to for generating analog according to the digital reference signal.
3. power control according to claim 2, it is characterised in that the control module is receiving described second
In the case of the pulse signal of level, if being not carried out the task unrelated with power cutoff, the power interruptions are not triggered and are appointed
Business, sends the control signal by the power remove to the power supply immediately.
4. power control according to claim 3, it is characterised in that the control module is additionally operable to receiving pass
In the case that machine is instructed, complete after current duty cycle, by sending the control signal by the power supply to the power supply
Shut-off.
5. power control according to claim 4, it is characterised in that the control module is in the power supply is triggered
After disconnected task in preset duration, the control signal is sent by the power remove to the power supply.
6. a kind of power control method, it is characterised in that including：
Power interruptions task is created, the power interruptions task is waited for；
Reference signal is provided；
Sampled signal is obtained from power supply, in situation of the amplitude less than or equal to the amplitude of the reference signal of the sampled signal
Under, the pulse signal of the first level is exported, in the case of amplitude of the amplitude higher than the reference signal of the sampled signal,
Export the pulse signal of second electrical level；
The power interruptions task is triggered in the case where receiving the pulse signal of the second electrical level to interrupt and turn off electricity
The unrelated task in source, after the power interruptions task is triggered, control signal is sent by the power remove to power supply.
7. power control method according to claim 6, it is characterised in that the power supply includes analog power, described to carry
Signal includes for reference：
Digital reference signal is generated, analog is provided according to the digital reference signal.
8. power control method according to claim 7, it is characterised in that also include：
In the case where receiving the pulse signal of the second electrical level, if being not carried out the task unrelated with power cutoff,
The power interruptions task is not triggered, sends the control signal by the power remove to the power supply immediately.
9. power control method according to claim 8, it is characterised in that also include：
In the case where receiving shutdown command, complete after current duty cycle, by sending the control signal to power supply
By power remove.
10. power control method according to claim 9, it is characterised in that described to trigger the power interruptions task
Afterwards, sending control signal to power supply includes the power remove：
After the power interruptions task is triggered in preset duration, the control signal is sent by the power supply to the power supply
Shut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118362.4A CN106972466A (en) | 2017-03-01 | 2017-03-01 | Power control and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710118362.4A CN106972466A (en) | 2017-03-01 | 2017-03-01 | Power control and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106972466A true CN106972466A (en) | 2017-07-21 |
Family
ID=59328240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710118362.4A Pending CN106972466A (en) | 2017-03-01 | 2017-03-01 | Power control and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106972466A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150088138A (en) * | 2014-01-23 | 2015-07-31 | 삼성전자주식회사 | Power management system including static protecting circuit and method of controlling the same |
| CN104868450A (en) * | 2015-05-29 | 2015-08-26 | 河南森源重工有限公司 | Lithium battery pack short-circuit protection circuit |
| CN205265238U (en) * | 2015-12-08 | 2016-05-25 | 深圳市电王科技有限公司 | Switching power supply's rapid protection circuit |
-
2017
- 2017-03-01 CN CN201710118362.4A patent/CN106972466A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150088138A (en) * | 2014-01-23 | 2015-07-31 | 삼성전자주식회사 | Power management system including static protecting circuit and method of controlling the same |
| CN104868450A (en) * | 2015-05-29 | 2015-08-26 | 河南森源重工有限公司 | Lithium battery pack short-circuit protection circuit |
| CN205265238U (en) * | 2015-12-08 | 2016-05-25 | 深圳市电王科技有限公司 | Switching power supply's rapid protection circuit |
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| CB02 | Change of applicant information |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Applicant before: Kunshan Longteng Optronics Co., Ltd. |
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Application publication date: 20170721 |