CN103904770B - A kind of AC power and battery power switching control system and method - Google Patents
A kind of AC power and battery power switching control system and method Download PDFInfo
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- CN103904770B CN103904770B CN201210586594.XA CN201210586594A CN103904770B CN 103904770 B CN103904770 B CN 103904770B CN 201210586594 A CN201210586594 A CN 201210586594A CN 103904770 B CN103904770 B CN 103904770B
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Abstract
The invention discloses a kind of AC power and battery power switching control system and method, system includes：AC power is used to provide AC signal to Switching Power Supply, switching control module；Switching Power Supply is used to for the AC signal that AC power is provided to be transformed into the first direct current signal, and provides the first direct current signal to power supply handover module；Battery is used to provide the second direct current signal to power supply handover module；Switching control module be used for gather calculate AC power provide AC signal virtual value, and accordingly come select to power supply handover module send battery power supplying control signal or AC power power supplying control signal；Power supply handover module, the power supplying control signal for being sent according to switching control module realizes the power switching of first direct current signal and second direct current signal.Technical scheme proposed by the present invention can reasonably realize the power switching of AC power and battery when AC supply voltage is unstable so that the design of system is relatively reliable and reasonable.
Description
Technical field
The present invention relates to technical field of electronic equipment, more particularly to a kind of AC power and battery power switching control system
And method.
Background technology
In using AC power and battery powered dual power supply electronic apparatus system, the switching control of power supply is generally present
Various ways.Use the switching control mode of power source special chip for：Judge that AC power is generated by after Switching Power Supply treatment
DC voltage, when DC voltage is lost, be immediately switched to battery and power, otherwise switch to AC power and power.Single-chip microcomputer
Gather DC voltage switching control mode be：It is straight by what is generated after Switching Power Supply treatment AC power to be gathered using single-chip microcomputer
Stream voltage, judges it is to switch to battery to power using software, still switches to AC power and powers.
Above two scheme cannot be solved when AC power is cut with the power supply of battery in AC power shakiness Timing power supply
Problem is changed, because when AC supply voltage is abnormal, the Switching Power Supply for processing AC power can be protected in a wide range
Hold normal direct voltage output.Under normal circumstances, the insurance of electronic apparatus system is based on rated power and lowest AC electricity
The ratio design of source voltage.In the case where rated power is certain, when AC supply voltage is less than lowest AC supply voltage
When, process AC power Switching Power Supply still can normal work, but the protective tube of electronic apparatus system will be operated in
State outside design, causes the unstable of whole system, now needs to switch to battery and powers.
The content of the invention
It is an object of the invention to propose a kind of AC power and battery power switching control system and method, can hand over
The rational power switching for realizing AC power and battery when stream supply voltage is unstable, preventing will not be because of AC supply voltage
Protective tube that is too low and burning system, works so that system is more in the state of being effectively protected protective tube within the design
Stabilization, reliability.
It is that, up to this purpose, the present invention uses following technical scheme：
A kind of AC power and battery power switching control system, the system include：AC power, Switching Power Supply, electricity
Pond, switching control module, power supply handover module；
The AC power, for providing AC signal to the Switching Power Supply, the switching control module；
The Switching Power Supply, the first direct current for the AC signal that the AC power is provided to be transformed into stabilization
Signal, and provide first direct current signal to the power supply handover module；
The battery, for providing the second direct current signal to the power supply handover module；
The switching control module, for the AC signal that AC power described in acquisition process is provided, calculates the exchange
The virtual value of the voltage of signal, when the virtual value of the voltage of the AC signal is more than or equal to the first threshold of setting, to
The power supply handover module sends AC power power supplying control signal；When the virtual value of the voltage of the AC signal is less than setting
First threshold when, to the power supply handover module send battery power supplying control signal；When the voltage of the AC signal has
Valid value from less than the setting first threshold raise to above or equal to setting Second Threshold when, to the power supply switch mould
Block sends the AC power power supplying control signal；Wherein, the Second Threshold is more than the first threshold；
The power supply handover module, for the battery or AC power power supply control that are sent according to the switching control module
Signal, realizes the power switching of first direct current signal and second direct current signal.
Further, the switching control module includes：
D.C mutual-inductor, for the AC signal that the AC power is provided to be transformed into small voltage AC signal, realizes
The AC power is isolated with the switching control module；
Rectification filtering module, the small voltage AC signal for the D.C mutual-inductor to be generated is converted into direct current letter
Number；
Signal conversion module, for the direct current signal to be converted into data signal；
Single-chip microcomputer, for the voltage according to the data signal, calculates the electricity of the AC signal that the AC power is provided
The virtual value of pressure, and according to the AC signal voltage virtual value size, to the power supply handover module send battery
Or AC power power supplying control signal.
Further, the rectification filtering module is made up of single-phase full-wave rectifer circuit.
Further, the signal conversion module selects signal conditioner or converter.
Further, the single-chip microcomputer is needed the numeral before the voltage to the data signal is calculated, also
Signal carries out necessary filtering process, prevents due to frequently switching caused by interference by mistake.
Further, the power supply handover module selects a data selector to realize using four.
Present invention also offers a kind of AC power and battery power switching control method, methods described includes：
AC power provides AC signal to Switching Power Supply, switching control module；
The AC signal that the AC power is provided is transformed into the Switching Power Supply the first direct current signal of stabilization,
And provide first direct current signal to power supply handover module；
Battery provides the second direct current signal to the power supply handover module；
The AC signal that AC power described in the switching control module acquisition process is provided, calculates the AC signal
The virtual value of voltage, when the virtual value of the voltage of the AC signal is more than or equal to the first threshold of setting, to the electricity
Source handover module sends AC power power supplying control signal；When the virtual value of the voltage of the AC signal is less than the first of setting
During threshold value, battery power supplying control signal is sent to the power supply handover module；When the AC signal voltage virtual value from
Raised to above less than the first threshold of the setting or equal to setting Second Threshold when, to the power supply handover module send
The AC power power supplying control signal；Wherein, the Second Threshold is more than the first threshold；
Battery or AC power power supplying control signal that the power supply handover module sends according to the switching control module,
Realize the power switching of first direct current signal and second direct current signal.
Technical scheme proposed by the present invention gathers the electricity of the AC power 1 being calculated by judging switching control module 4
Valid value is pressed with, switching control is powered to power supply handover module 5, can reasonably realized when AC supply voltage is unstable
AC power and the power switching of battery, prevent to be burnt because AC supply voltage is too low the protective tube of system, effectively
Protection protective tube within the design in the state of work so that system more stablizes, reliable.
Brief description of the drawings
Fig. 1 is that the AC power that the specific embodiment of the invention is provided is illustrated with battery power switching Control system architecture
Figure；
Fig. 2 is the switching control modular structure schematic diagram that the specific embodiment of the invention is provided；
Fig. 3 is the power supply handover module structural representation that the specific embodiment of the invention is provided.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
Fig. 1 is that the AC power that the specific embodiment of the invention is provided is illustrated with battery power switching Control system architecture
Figure.Referring to Fig. 1, AC power includes with battery power switching control system：AC power 1, Switching Power Supply 2, battery 3, switching
Control module 4, power supply handover module 5.
AC power 1, AC signal is provided to Switching Power Supply 2, switching control module 4.
Switching Power Supply 2, the AC signal that AC power 1 is provided is transformed into the first direct current signal of stabilization, and to power supply
Handover module 5 provides the first direct current signal.
Battery 3, the second direct current signal is provided to power supply handover module 5.
Switching control module 4, collection calculates the virtual value of the voltage of the AC signal that AC power 1 is provided, and according to institute
The size of AC signal voltage effective value is stated, corresponding power supplying control signal is sent to power supply handover module 5.
The power supplying control signal that power supply handover module 5 sends according to switching control module 4, completes the first direct current signal and the
The power switching of two direct current signals, that is, realize the power switching of AC power and battery.
Fig. 2 is the switching control modular structure schematic diagram that the specific embodiment of the invention is provided.Referring to Fig. 2, switching control
Module 4 is further included：D.C mutual-inductor 401, rectification filtering module 402, signal conversion module 403, single-chip microcomputer 404.
The AC signal that AC power 1 is provided is further input to D.C mutual-inductor 401 in addition to access switch power supply 2.
The AC signal that D.C mutual-inductor 401 provides the AC power 1 of input, by 1:1000 signal conversion, line
Property is reduced to small voltage AC signal.The small voltage should be the voltage that can be sampled by the pin of single-chip microcomputer 404, if AC power
The virtual value of the voltage of 1 AC signal for providing is K with the virtual value ratio of the voltage of small voltage AC signal.Meanwhile, exchange
Transformer 401 can be isolated AC power 1 with switching control module 4, effectively evade the wind of late-class circuit electrical safety
Danger.
The small voltage AC signal that rectification filtering module 402 obtains D.C mutual-inductor 401 is transformed to direct current signal, its
In, rectification filtering module 402 can be realized using single-phase full-wave rectifer circuit.
Signal conversion module 403 receives the direct current signal of the output of rectification filtering module 402, by signal conditioner or A/D
(Analog/Digital) converter is digitized, the data signal that generation can be recognized by single-chip microcomputer.
Single-chip microcomputer 404 receives the recognizable data signal that signal conversion module 403 is obtained, and sampling is calculated current
The virtual value of the voltage of AC signal, and switching control is powered to power supply handover module 5 accordingly.The electricity of current AC signal
The data signal that the virtual value of pressure can be obtained by signal conversion module 403 is with above-mentioned ratio for the product of K is obtained.
When the virtual value of the voltage of current AC signal is more than or equal to the first threshold, such as 85V for setting, single-chip microcomputer
404 send AC power power supplying control signal (low level signal) to power supply handover module 5；Currently the voltage of AC signal has
When valid value is less than the first threshold for setting, single-chip microcomputer 404 sends battery power supplying control signal (high level to power supply handover module 5
Signal)；The virtual value of the voltage of current AC signal is raised to above or equal to Second Threshold from the state less than first threshold,
For example during 90V, AC power power supplying control signal (low level signal) is sent to power supply handover module 5.Wherein, Second Threshold will
It is more slightly higher than first threshold.Different power supplys is switched over by setting first threshold, Second Threshold herein, hysteresis electricity is formed
Road, is prevented from the frequent switching of AC supply voltage virtual value power supply in a certain value.But, provided due to AC power
AC signal usually there will be interference, easily causes the frequent of power supply and switches by mistake, therefore specific embodiment of the invention single-chip microcomputer 404
Before the virtual value of the voltage to current AC signal carries out sampling calculating, single-chip microcomputer 404 is also needed to signal conversion module
The data signal of 403 generations carries out necessary filtering process, removal interference.
Fig. 3 is the power supply handover module structural representation that the specific embodiment of the invention is provided.Referring to Fig. 3, power supply switching
Module 5, it is preferred to select a data selector to realize using four.Four select an address signal end A2 of a data selector to connect
The power supplying control signal that single-chip microcomputer 404 sends is received, another address signal end A1 ground connection, data input pin D0 receives switch
First direct current signal of the output of power supply 2, data input pin D1 receives the second direct current signal of the output of battery 3.If address choice
What signal end A2 was received is AC power power supplying control signal (low level signal), then four select the output end Y of a data selector
What is exported is the signal of data input pin D0, the first direct current signal that system is generated using AC power 1 through the conversion of Switching Power Supply 2
It is powered to late-class circuit.If what address signal end A2 was received is battery power supplying control signal (high level signal),
Then four select that the output end Y of a data selector exports be data input pin D1 signal, system provided using battery 3 second
Direct current signal is powered to late-class circuit.
AC power proposed by the present invention and battery power switching control system and method, by judging switching control module
The voltage effective value of the AC power 1 that 4 collections are calculated, switching control is powered to power supply handover module 5, can handed over
The switching of AC power 1 and battery 3 is reasonably realized in the voltage instability timing for flowing power supply 1, and preventing will not be because of AC power electricity
Protective tube that is low and burning system is pressed through, is worked in the state of being effectively protected protective tube within the design so that system is more
Stabilization, reliability.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
It is any be familiar with the people of the technology disclosed herein technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (7)
1. a kind of AC power and battery power switching control system, it is characterised in that the system includes：AC power, open
Powered-down source, battery, switching control module, power supply handover module；
The AC power, for providing AC signal to the Switching Power Supply, the switching control module；
The Switching Power Supply, the first direct current letter for the AC signal that the AC power is provided to be transformed into stabilization
Number, and provide first direct current signal to the power supply handover module；
The battery, for providing the second direct current signal to the power supply handover module；
The switching control module, for the AC signal that AC power described in acquisition process is provided, calculates the AC signal
Voltage virtual value, when the AC signal voltage virtual value more than or equal to setting first threshold when, to described
Power supply handover module sends AC power power supplying control signal；When the virtual value of the voltage of the AC signal is less than the setting
First threshold when, to the power supply handover module send battery power supplying control signal；When the voltage of the AC signal has
Valid value from less than the setting first threshold raise to above or equal to setting Second Threshold when, to the power supply switch mould
Block sends the AC power power supplying control signal；Wherein, the Second Threshold is more than the first threshold；
The power supply handover module, for battery or AC power the power supply control letter sent according to the switching control module
Number, realize the power switching of second direct current signal and first direct current signal.
2. AC power according to claim 1 and battery power switching control system, it is characterised in that the switching control
Molding block includes：
D.C mutual-inductor, for the AC signal that the AC power is provided to be transformed into small voltage AC signal, realizes described
AC power is isolated with the switching control module；
Rectification filtering module, the small voltage AC signal for the D.C mutual-inductor to be generated is converted into direct current signal；
Signal conversion module, for the direct current signal to be converted into data signal；
Single-chip microcomputer, for the voltage according to the data signal, calculates the voltage of the AC signal that the AC power is provided
Virtual value, and according to the AC signal voltage virtual value size, to the power supply handover module send battery or friendship
Stream power supply power supplying control signal.
3. AC power according to claim 2 and battery power switching control system, it is characterised in that the rectification filter
Ripple module is made up of single-phase full-wave rectifer circuit.
4. AC power according to claim 2 and battery power switching control system, it is characterised in that the signal turns
Mold changing block selects signal conditioner or converter.
5. AC power according to claim 2 and battery power switching control system, it is characterised in that the single-chip microcomputer
Before the voltage to the data signal is calculated, also need for the data signal to carry out necessary filtering process, prevent
Due to frequently switching caused by interference by mistake.
6. AC power according to claim 1 and battery power switching control system, it is characterised in that the power supply is cut
Mold changing block selects a data selector to realize using four.
7. a kind of AC power and battery power switching control method, it is characterised in that methods described includes：
AC power provides AC signal to Switching Power Supply, switching control module；
The Switching Power Supply by the AC signal that the AC power is provided be transformed into stabilization the first direct current signal, and to
Power supply handover module provides first direct current signal；
Battery provides the second direct current signal to the power supply handover module；
The AC signal that AC power described in the switching control module acquisition process is provided, calculates the voltage of the AC signal
Virtual value, when the AC signal voltage virtual value more than or equal to setting first threshold when, cut to the power supply
Mold changing block sends AC power power supplying control signal；When the virtual value of the voltage of the AC signal is less than the first of the setting
During threshold value, battery power supplying control signal is sent to the power supply handover module；When the AC signal voltage virtual value from
Raised to above less than the first threshold of the setting or equal to setting Second Threshold when, to the power supply handover module send
The AC power power supplying control signal；Wherein, the Second Threshold is more than the first threshold；
The power supply handover module switches to battery or AC power power supply control letter according to what the switching control module sent
Number, realize the power switching of second direct current signal and first direct current signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210586594.XA CN103904770B (en) | 2012-12-28 | 2012-12-28 | A kind of AC power and battery power switching control system and method |
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| CN201210586594.XA CN103904770B (en) | 2012-12-28 | 2012-12-28 | A kind of AC power and battery power switching control system and method |
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| CN103904770B true CN103904770B (en) | 2017-05-31 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104410062B (en) * | 2014-12-22 | 2017-06-23 | 中塔新兴通讯技术集团有限公司 | A kind of communication power supply remote power feeding system |
| CN105006880A (en) * | 2015-07-02 | 2015-10-28 | 浪潮电子信息产业股份有限公司 | Device being capable of achieving AC and DC power supply switching |
| CN104993575A (en) * | 2015-07-15 | 2015-10-21 | 浙江骐远智能科技有限公司 | Power supply management system used for bicycle station |
| CN107340415B (en) | 2017-07-07 | 2020-02-14 | 京东方科技集团股份有限公司 | Signal compensator, signal compensation method thereof and signal compensation system |
| CN108539850A (en) * | 2018-05-19 | 2018-09-14 | 安徽邵氏华艾生物医疗电子科技有限公司 | Automatically switch to improve CSM modules anti-disturbance method and system based on battery |
| CN112688411A (en) * | 2020-11-18 | 2021-04-20 | 卓旺(安徽)航空科技产业股份有限公司 | 50 meters of high-power supply mooring system under water of unmanned aerial vehicle |
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| CN1832295A (en) * | 2005-02-14 | 2006-09-13 | 通用电气公司 | Method and system for providing auxiliary power for anesthesia delivery and patient monitoring |
| CN102842955A (en) * | 2012-09-12 | 2012-12-26 | 莱芜钢铁集团有限公司 | Emergency power supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6122181A (en) * | 1998-05-21 | 2000-09-19 | Exide Electronics Corporation | Systems and methods for producing standby uninterruptible power for AC loads using rectified AC and battery |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1832295A (en) * | 2005-02-14 | 2006-09-13 | 通用电气公司 | Method and system for providing auxiliary power for anesthesia delivery and patient monitoring |
| CN102842955A (en) * | 2012-09-12 | 2012-12-26 | 莱芜钢铁集团有限公司 | Emergency power supply system |
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