CN106849334A - Source Current Control system - Google Patents
Source Current Control system Download PDFInfo
- Publication number
- CN106849334A CN106849334A CN201710142376.XA CN201710142376A CN106849334A CN 106849334 A CN106849334 A CN 106849334A CN 201710142376 A CN201710142376 A CN 201710142376A CN 106849334 A CN106849334 A CN 106849334A
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- Prior art keywords
- module
- resistance
- source current
- control system
- voltage
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention relates to a kind of Source Current Control system, by voltage detection module detect input voltage whether normal work, if the pressure drop of input voltage is less than threshold voltage, then it is assumed that now input voltage power-off, control module be connected with voltage detection module is ended；Controlling switch module disconnects the connection between input voltage and power storage module after control module cut-off；Thus, power storage module is only powered to VIN_DY network-sides so that said system is kept for one section of normal working hours, and then system is signaled to head end.Therefore, it is possible to realize powering off warning function.
Description
Technical field
The present invention relates to network electric power control system, more particularly to a kind of power-off early warning and provide backup power supply of sending
Source Current Control system.
Background technology
Dying gasp signals refer to：When system input voltage VIN cannot meet system worked well.System meeting
Automatically one signal of hair is to head end.Tell head end (CO), cpe end may normal work, head end makes respective reaction, releases
Original that passage arranged to CPE is put, the resource at CO ends is obtained reasonable employment.Existing mode cannot allow before power-off
Blanket insurance holds one section of normal working hours, and then system is signaled to head end.
The content of the invention
Based on this, it is necessary to provide a kind of Source Current Control system for sending power-off early warning and provide backup power supply.
A kind of Source Current Control system, including voltage detection module, control module, switch module and power storage module；
The power supply termination input voltage of the voltage detection module, the input of the output termination control module, ground connection
End ground connection；Input, the output of the output termination power storage module of the control termination switch module of the control module
End, earth terminal ground connection；The power supply of the switch module terminates the input voltage, the output of the output termination power storage module
End；The output of the power storage module terminates the VIN_DY network-sides, earth terminal ground connection；
Whether the voltage detection module is used to detect the input voltage more than threshold voltage, if it is not, the then voltage
Detection module exports the pressure drop of detection to the control module, the control module cut-off；Controlled after the control module cut-off
Make the connection that the switch module is disconnected between input voltage and the power storage module；The power storage module is only to the VIN_DY
Network-side is powered.
Wherein in one embodiment, the voltage detection module includes diode D1 and resistance R5, the diode D1
Negative pole connect the input voltage, positive pole and meet the resistance R5, the resistance R5 is grounded away from one end of the diode D1；Institute
State diode D1 and the output end that the common port of the resistance R5 is the voltage detection module.
Wherein in one embodiment, the diode D1 is Zener diode.
Wherein in one embodiment, the control module includes triode Q2, resistance R1 and resistance R3；
The base stage of the triode Q2 connects the output end of the voltage detection module, grounded emitter, colelctor electrode and connects described
The termination resistance R1 of resistance R3, the resistance R3 away from the triode Q2；The resistance R1 is away from the resistance R3
A termination power storage module output end, the resistance R1 and the control that the common port of the resistance R3 is the control module
End processed.
Wherein in one embodiment, the control module also terminates three pole including resistance R4, the resistance R4 mono-
The base stage of pipe Q2, output ends of the resistance R4 away from the termination voltage detection module of the triode Q2.
Wherein in one embodiment, the triode Q2 is N-type triode.
Wherein in one embodiment, the switch module includes FET Q1, and the grid of the FET Q1 connects
The control end of the control module, drain electrode connect the output end that the input voltage, source electrode connect the power storage module.
Wherein in one embodiment, the FET Q1 is p-type FET.
Wherein in one embodiment, the power storage module includes electric capacity C1, and the positive pole of the electric capacity C1 meets the VIN_
DY network-sides, negative pole ground connection.
Above-mentioned Source Current Control system by voltage detection module detect input voltage whether normal work, if input electricity
The pressure drop of pressure is less than threshold voltage, then it is assumed that now input voltage power-off, the control module cut-off being connected with voltage detection module；
Controlling switch module disconnects the connection between input voltage and power storage module after control module cut-off；Thus, power storage module is only right
VIN_DY network-sides are powered so that said system is kept for one section of normal working hours, and then system is signaled to head
End.Therefore, it is possible to realize powering off warning function.
Brief description of the drawings
Fig. 1 is the module map of Source Current Control system；
Fig. 2 is the schematic diagram of Source Current Control system.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give presently preferred embodiments of the present invention.But, the present invention can be realized in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more thorough
Comprehensively.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technical field of the invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes that one or more are related
Listed Items arbitrary and all of combination.
As shown in figure 1, being the module map of Source Current Control system.
A kind of Source Current Control system, including voltage detection module 101, control module 102, switch module 103 and storage
Electric module 104；
The power supply termination input voltage of the voltage detection module 101, the input of the output termination control module 102
End, earth terminal ground connection；Input, the output termination storage of the control termination switch module 103 of the control module 102
The output end of electric module 104, earth terminal ground connection；The power supply of the switch module 103 terminates the input voltage, output termination institute
State the output end of power storage module 104；The output of the power storage module 104 terminates the VIN_DY network-sides, earth terminal ground connection.
Whether the voltage detection module 101 is used to detect the input voltage more than threshold voltage, if it is not, the then electricity
Pressure detection module 101 exports the pressure drop of detection to the control module 102, and the control module 102 is ended；The control mould
Block 102 controls the switch module 103 to disconnect the connection between input voltage and the power storage module 104 after ending；The storage
Electric module 104 is only powered to the VIN_DY network-sides.
Realize that Dying gasp functions need to meet：
1. system has bulky capacitor energy storage, when system discovery input voltage VIN cannot meet system worked well, bulky capacitor
Energy storage can allow system keep one section of normal working hours, system is signaled to head end.
2. a trigger voltage is needed to go to touch the work for making system entrance send Dying gasp signals.
3. system from reach trigger voltage to system cannot normal need time enough by system worked well, this when
Between be usually a few tens of milliseconds.At this moment the energy that electric capacity is stored is needed to be given to the VIN_DY network-sides that system sends Dying gasp
Use, other unrelated network VIN are done with isolation shut-off.
Therefore, in the present embodiment, energy storage is carried out as bulky capacitor using power storage module 104.In the pressure of input voltage
When drop is unsatisfactory for system worked well, isolation shut-off is carried out to network VIN by switch module 103 and control module 102, together
When, power storage module 104 can provide voltage and give VIN_DY network-sides, system is maintained one section of normal working hours.
Incorporated by reference to Fig. 2.
Voltage detection module 101 include the negative pole of diode D1 and resistance R5, the diode D1 connect the input voltage,
Resistance R5 described in positive pole, the resistance R5 are grounded away from one end of the diode D1；The diode D1 and resistance R5
Common port be the voltage detection module 101 output end.
Diode D1 is Zener diode.
Control module 102 includes triode Q2, resistance R1 and resistance R3；
The base stage of the triode Q2 connects the output end of the voltage detection module 101, grounded emitter, colelctor electrode and meets institute
State the termination resistance R1 of resistance R3, the resistance R3 away from the triode Q2；The resistance R1 is away from the resistance
The output end of the one termination power storage module 104 of R3, the common port of the resistance R1 and resistance R3 is the control mould
The control end of block 102.
Control module 102 also terminates the base stage of the triode Q2, the resistance R4 including resistance R4, the resistance R4 mono-
Away from the output end of the termination voltage detection module 101 of the triode Q2.
Triode Q2 is N-type triode.
Switch module 103 includes that the grid of FET Q1, the FET Q1 connects the control of the control module 102
End, drain electrode connect the output end that the input voltage, source electrode connect the power storage module 104.
FET Q1 is p-type FET.
Existing gateway product power supply adaptor is generally 12V outputs, i.e. input voltage, when the work of said system is also 12V
When, during using diode to be galvanically isolated, system risk can be introduced due to the pressure drop of diode.But in the present embodiment, make
Can be realized being galvanically isolated in the case of smaller pressure drop with FET Q1, triode Q2.
Power storage module 104 includes that the positive pole of electric capacity C1, the electric capacity C1 connects the VIN_DY network-sides, negative pole ground connection.
Based on above-mentioned all embodiments, the operation principle of Source Current Control system is as follows：
When input voltage is 12V, diode D1 and resistance R5 is logical, when the step-down of diode D1 is 10V, resistance
The pressure drop on R5 both sides is 2V.At this moment the voltage before the VBE and resistance R4 of triode Q2 is also 2V, and VBE is more than 0.7V, VCE
Conducting.
FET Q1 drain electrodes meet 12V, and due to the presence of body diode in FET Q1, the source electrode of scene effect pipe has
VIN-VSD (conducting voltage of body diode)=12-0.7=11.3V voltages.Therefore resistance R1, the voltage of resistance R3 and VCE and
It is 11.3V, the voltage of the FET pipe Q1 grids between connection resistance R1 and resistance R3 is [(11.3V-VCE)/(R1+R3)]
R3+VCE=[(11.3-0.3)/(47+100)] * 100+0.3=7.18V, at this moment VGS=7.18-11.3=-4.12V, at this moment
VGS is less than -1V, and source electrode and the drain electrode of FET Q1 are turned on.When RDS is not more than 50ohm, ID is not more than 1A, and pressure drop is to the maximum
0.05V, it is more much smaller than being the pressure drop 0.7V that isolates of diode.It is assumed that when electric current is 1A, FET Q1 power consumptions PMOS=
VI=0.05W, with the power consumption P diodes=VI=0.3*1*0.3W of diode.It follows that the power dissipation ratio of said system uses two
It is much smaller that pole pipe does isolation.
At this moment the electric current of diode D1 is (2V-VBE)/R4+2V/R5=0.07mA, and maximum much smaller than diode D1 is anti-
To electric current 5mA.IB=(the 2V-VBE)/R4=0.028mA of triode Q2, at this moment available maximum current IC=IB*hFE=
0.028*100=2.8mA, the available maximum voltage VR1=R1*IC=2.8*47=131.6V in resistance R1 two ends>>11.3V
Virtual voltage, it is ensured that the reliability of circuit.
When the input voltage of VIN is less than the reverse turn-on voltages 10V of diode D1, diode D1 is not turned on, triode
The VBE of Q2 is 0V, and colelctor electrode is obstructed with emitter stage, and IC is 0A, and resistance R1 does not have electric current to pass through, and pressure drop is 0V, i.e. FET
The VGS=0V of Q1, FET shut-off.The energy of at this moment electric capacity C1 storages is only available to VIN_DY network-sides and uses, and prevents
Consumption of the VIN networks to electric capacity C1 energy, is extended for the working time of VIN_DY network-sides so as to assist to realize the Dying of gateway
Gasp functions.
Above-mentioned Source Current Control system by voltage detection module 101 detect input voltage whether normal work, if defeated
The pressure drop for entering voltage is less than threshold voltage, then it is assumed that now input voltage power-off, the control mould being connected with voltage detection module 101
Block 102 ends；Controlling switch module 103 disconnects the company between input voltage and power storage module 104 after the cut-off of control module 102
Connect；Thus, power storage module 104 is only powered to VIN_DY network-sides so that said system is kept for one section of normal working hours,
And then system is signaled to head end.Therefore, it is possible to realize powering off warning function.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of Source Current Control system, it is characterised in that including voltage detection module, control module, switch module and storage
Electric module；
The power supply termination input voltage of the voltage detection module, the input of the output termination control module, ground connection termination
Ground；The input of the control termination switch module of the control module, output terminate the output end of the power storage module, connect
Ground terminal is grounded；The power supply of the switch module terminates the input voltage, the output end of the output termination power storage module；It is described
The output of power storage module terminates the VIN_DY network-sides, earth terminal ground connection；
Whether the voltage detection module is used to detect the input voltage more than threshold voltage, if it is not, the then voltage detecting
Module exports the pressure drop of detection to the control module, the control module cut-off；Institute is controlled after the control module cut-off
State the connection that switch module is disconnected between input voltage and the power storage module；The power storage module is only to the VIN_DY networks
End is powered.
2. Source Current Control system according to claim 1, it is characterised in that the voltage detection module includes two poles
The negative pole of pipe D1 and resistance R5, the diode D1 meets resistance R5 described in the input voltage, positive pole, and the resistance R5 is away from institute
State one end ground connection of diode D1；The diode D1 and the output that the common port of the resistance R5 is the voltage detection module
End.
3. Source Current Control system according to claim 1, it is characterised in that the diode D1 is the pole of Zener two
Pipe.
4. Source Current Control system according to claim 1, it is characterised in that the control module includes triode
Q2, resistance R1 and resistance R3；
The base stage of the triode Q2 connects the output end of the voltage detection module, grounded emitter, colelctor electrode and connects the resistance
The termination resistance R1 of R3, the resistance R3 away from the triode Q2；The resistance R1 away from the resistance R3 one
Terminate the output end of the power storage module, the resistance R1 and the control that the common port of the resistance R3 is the control module
End.
5. Source Current Control system according to claim 4, it is characterised in that the control module also includes resistance
R4, the resistance R4 mono- terminate the base stage of the triode Q2, and the resistance R4 is described away from a termination of the triode Q2
The output end of voltage detection module.
6. the Source Current Control system according to claim 4 or 5, it is characterised in that the triode Q2 is the pole of N-type three
Pipe.
7. Source Current Control system according to claim 1, it is characterised in that the switch module includes FET
The grid of Q1, the FET Q1 connects the control end of the control module, drain electrode and connects the input voltage, source electrode and connect the storage
The output end of electric module.
8. Source Current Control system according to claim 1, it is characterised in that the FET Q1 is p-type effect
Ying Guan.
9. Source Current Control system according to claim 1, it is characterised in that the power storage module includes electric capacity C1,
The positive pole of the electric capacity C1 connects the VIN_DY network-sides, negative pole ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142376.XA CN106849334A (en) | 2017-03-10 | 2017-03-10 | Source Current Control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710142376.XA CN106849334A (en) | 2017-03-10 | 2017-03-10 | Source Current Control system |
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| Publication Number | Publication Date |
|---|---|
| CN106849334A true CN106849334A (en) | 2017-06-13 |
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ID=59144683
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710142376.XA Pending CN106849334A (en) | 2017-03-10 | 2017-03-10 | Source Current Control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557927A (en) * | 2020-12-01 | 2021-03-26 | 湖北亿纬动力有限公司 | Method for determining standing time of battery |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1921405A (en) * | 2005-08-26 | 2007-02-28 | 鸿富锦精密工业（深圳）有限公司 | Network equipment capable of generating electric-breaking signal |
| CN201063461Y (en) * | 2007-06-28 | 2008-05-21 | 中兴通讯股份有限公司 | Power-off alarm energy-accumulating circuit |
| CN201656419U (en) * | 2010-01-12 | 2010-11-24 | 瑞斯康达科技发展股份有限公司 | Power failure warning circuit of network terminal equipment |
| CN102594111A (en) * | 2012-02-24 | 2012-07-18 | 中兴通讯股份有限公司 | Quick discharge circuit |
| CN103094937A (en) * | 2011-10-31 | 2013-05-08 | 海洋王照明科技股份有限公司 | Intelligent charging circuit and lamp |
| CN103166208A (en) * | 2011-12-13 | 2013-06-19 | 联芯科技有限公司 | Power supplying circuit capable of hindering surge currents |
| CN203850832U (en) * | 2014-05-12 | 2014-09-24 | 深圳恒隆电子有限公司 | Anti-reversal connection and low-power shutdown circuit for MID (Mobile Internet Device) battery |
| CN204947900U (en) * | 2015-09-21 | 2016-01-06 | 上海新微技术研发中心有限公司 | Power management circuit of electronic lock |
-
2017
- 2017-03-10 CN CN201710142376.XA patent/CN106849334A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1921405A (en) * | 2005-08-26 | 2007-02-28 | 鸿富锦精密工业（深圳）有限公司 | Network equipment capable of generating electric-breaking signal |
| CN201063461Y (en) * | 2007-06-28 | 2008-05-21 | 中兴通讯股份有限公司 | Power-off alarm energy-accumulating circuit |
| CN201656419U (en) * | 2010-01-12 | 2010-11-24 | 瑞斯康达科技发展股份有限公司 | Power failure warning circuit of network terminal equipment |
| CN103094937A (en) * | 2011-10-31 | 2013-05-08 | 海洋王照明科技股份有限公司 | Intelligent charging circuit and lamp |
| CN103166208A (en) * | 2011-12-13 | 2013-06-19 | 联芯科技有限公司 | Power supplying circuit capable of hindering surge currents |
| CN102594111A (en) * | 2012-02-24 | 2012-07-18 | 中兴通讯股份有限公司 | Quick discharge circuit |
| CN203850832U (en) * | 2014-05-12 | 2014-09-24 | 深圳恒隆电子有限公司 | Anti-reversal connection and low-power shutdown circuit for MID (Mobile Internet Device) battery |
| CN204947900U (en) * | 2015-09-21 | 2016-01-06 | 上海新微技术研发中心有限公司 | Power management circuit of electronic lock |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557927A (en) * | 2020-12-01 | 2021-03-26 | 湖北亿纬动力有限公司 | Method for determining standing time of battery |
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Application publication date: 20170613 |