CN107272809A - Automatic switch electric installation and system - Google Patents
Automatic switch electric installation and system Download PDFInfo
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- CN107272809A CN107272809A CN201710691467.9A CN201710691467A CN107272809A CN 107272809 A CN107272809 A CN 107272809A CN 201710691467 A CN201710691467 A CN 201710691467A CN 107272809 A CN107272809 A CN 107272809A
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- Prior art keywords
- power supply
- voltage
- electrically connected
- automatic switch
- electric system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
Abstract
The present invention relates to electronic circuit technology field, a kind of automatic switch electric installation and system are provided, the automatic switch electric installation is electrically connected at exterior power supply plant and by between electric system, for realizing to the switch electricity by electric system, the present invention is when the output voltage of exterior power supply plant temporarily drops, the thorough power down of transformation voltage source is controlled by voltage detecting circuit, so that after the output voltage of exterior power supply plant recovers, transformation voltage source can be according to electric in design requirement, solve exterior power supply plant in the prior art it is unstable and cause circuit system can not normal work the problem of, with good reliability.
Description
Technical field
The present invention relates to electronic circuit technology field, in particular to a kind of automatic switch electric installation and system.
Background technology
With the development of electronic technology, circuit system becomes increasingly complex, and typically has multiple different voltage sources, circuit system
System has specific electric sequence to each voltage source.When there is voltage dip when exterior power supply plant is unstable, due to difference
The load resistance of voltage source is different with load capacitance, a part of voltage source power down easily occurs slowly, another part voltage source falls
The fast situation of electricity.Meanwhile, when exterior power supply plant recovers, each voltage source recovers simultaneously, due to there was only the power down of portion voltage source
After recover, now each voltage source of circuit system is according to electric in design requirement, thus easily occur it is abnormal, even if circuit system
, also easily there is the voltage source and drops into situation about after half and restoring electricity, cause circuit system in system only one of which voltage source
System can not normal work.
The content of the invention
It is an object of the invention to provide a kind of automatic switch electric installation and system, to improve above mentioned problem.
To achieve these goals, the technical scheme that the embodiment of the present invention is used is as follows：
In a first aspect, the invention provides a kind of automatic switch electric installation, applied to exterior power supply plant and by electric system
Between, realize that, to the switch electricity by electric system, it includes voltage detection module and transformation voltage source, and transformation voltage source is electrically connected with
In exterior power supply plant and by between electric system, voltage detection module electrically connects with exterior power supply plant and transformation voltage source
Connect；The output voltage that voltage detection module is used for foundation exterior power supply plant produces detection voltage, is preset when detection voltage is less than
The first powered-down signal is exported during threshold value so that transformation voltage source power down；When detecting that voltage is gradually risen to more than predetermined threshold value,
Voltage detection module persistently exports the second powered-down signal in preset time, so that transformation voltage source persistently falls in preset time
Electricity, and electric signal is opened in output after preset time arrival.
Second aspect, the invention provides a kind of automatic switch electric system, including exterior power supply plant, by electric system and on
The automatic switch electric installation stated.Automatic switch electric installation is electrically connected at exterior power supply plant and by between electric system, for reality
Show exterior power supply plant and by the switch electricity between electric system, it includes voltage detection module and transformation voltage source, transformation voltage
Source be electrically connected at exterior power supply plant and by between electric system, voltage detection module and exterior power supply plant and transformation voltage source
It is electrically connected with；Voltage detection module is used to produce detection voltage according to the output voltage of exterior power supply plant, when detection voltage
The first powered-down signal is exported during less than predetermined threshold value so that transformation voltage source power down；When detection voltage is gradually risen to more than default
During threshold value, voltage detection module persistently exports the second powered-down signal in preset time, so that transformation voltage source is in preset time
It is interior to continue power down, and electric signal is opened in output after preset time arrival.
Compared with the prior art, the invention has the advantages that：A kind of automatic switch electric installation that the present invention is provided and
System, when the output voltage of exterior power supply plant temporarily drops, controls the thorough power down of transformation voltage source by voltage detecting circuit, makes
After the output voltage recovery for obtaining exterior power supply plant, transformation voltage source can solve prior art according to electric in design requirement
Middle exterior power supply plant it is unstable and cause circuit system can not normal work the problem of, with good reliability.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the structured flowchart for the automatic switch electric system that first embodiment of the invention is provided.
Fig. 2 shows the circuit diagram for the automatic switch electric system that first embodiment of the invention is provided.
Fig. 3 shows the circuit diagram for the automatic switch electric system that first embodiment of the invention is provided.
Fig. 4 shows the circuit diagram for the automatic switch electric system that second embodiment of the invention is provided.
Fig. 5 shows the structured flowchart for the automatic switch electric system that third embodiment of the invention is provided.
Fig. 6 shows the structured flowchart for the powered-down drive module that third embodiment of the invention is provided.
Fig. 7 shows the circuit diagram for the automatic switch electric system that third embodiment of the invention is provided.
Fig. 8 shows the circuit diagram for the automatic switch electric system that third embodiment of the invention is provided.
Fig. 9 shows the circuit diagram for the automatic switch electric system that fourth embodiment of the invention is provided.
Figure 10 shows the circuit diagram for the automatic switch electric system that fifth embodiment of the invention is provided.
Icon：100th, 200,300,400,500- automatic switch electric systems；110- exterior power supply plants；111- external electricals
Source；113- voltage transformation modules；130- automatic switch electric installations；131- voltage detection modules；1311- voltage detecting circuits；
1313- controls circuit；1315- driving chips；133- transformation voltage sources；The powered-down drive modules of 135-；1351- switching tubes；150-
By electric system；151- microcontrollers；152- watchdog circuits；153- communication modules；310- remote control terminals；320- networks.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.Meanwhile, the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
First embodiment
Fig. 1 is refer to, Fig. 1 shows the structural frames for the automatic switch electric system 100 that first embodiment of the invention is provided
Figure.Automatic switch electric system 100 includes exterior power supply plant 110, automatic switch electric installation 130 and by electric system 150, opens automatically
Powered-down device 130 is electrically connected at exterior power supply plant 110 and by between electric system 150, for realizing exterior power supply plant 110
With by between electric system 150 switch electricity.
Fig. 2 is refer to, exterior power supply plant 110 includes external power source 111 and voltage transformation module 113, external power source
111st, voltage transformation module 113 and automatic switch electric installation 130 are sequentially connected electrically, and voltage transformation module 113 is used for external electrical
The alternating current that source 111 is provided is converted to direct current and exported, so as to be carried for automatic switch electric installation 130 and by electric system 150
For supply of electric power.
As a kind of embodiment, external power source 111 can be 220V alternating currents.Voltage transformation module 113 can be outer
Portion's adapter, its output voltage can be 12V.
In the present embodiment, automatic switch electric installation 130 includes voltage detection module 131 and transformation voltage source 133, transformation
Voltage source 133 is electrically connected at voltage transformation module 113 and by between electric system 150, voltage detection module 131 and voltage conversion
Module 113 and transformation voltage source 133 are electrically connected with.
In the present embodiment, voltage detection module 131 is used to produce detection according to the output voltage of voltage transformation module 113
Voltage, when detection voltage is less than predetermined threshold value, that is, the output voltage of exterior power supply plant 110, when temporarily dropping, output first is closed
Electric signal is so that the power down of transformation voltage source 133；When detection voltage is gradually risen to more than predetermined threshold value, that is, externally fed system
When the output voltage of system 110 recovers, voltage detection module 131 persistently exports the second powered-down signal in preset time T, so as to become
Piezoelectricity potential source 133 continues power down in preset time, and output opens electric signal to control to become piezoelectricity after preset time arrival
Potential source 133 opens electricity, and preset time T is more than the power down time T1 of transformation voltage source 133, can cause transformation voltage source 133 all
Power down.
As a kind of embodiment, voltage detection module 131 includes voltage detecting circuit 1311 and and voltage detecting circuit
The 1311 control circuits 1313 being electrically connected with, voltage detecting circuit 1311 is electrically connected with to obtain electricity with voltage transformation module 113
Press the output voltage of modular converter 113 and then produce detection voltage.Voltage detecting circuit 1311 include the first divider resistance R1 and
Second divider resistance R2, the first divider resistance R1 and the second divider resistance R2 is series between voltage transformation module 113 and ground, control
Circuit 1313 processed is electrically connected between the first divider resistance R1 and the second divider resistance R2.Circuit 1313 is controlled to be used for according to electricity
The powered-down signal of detection voltage output first that pressure modular converter 113 is produced, the second powered-down signal and electric signal is opened, in the present embodiment
In, control circuit 1313 is electrification reset chip U0.
In the present embodiment, detection voltage be the output voltage of voltage transformation module 113 in the first divider resistance R1 or
Partial pressure on second divider resistance R2, predetermined threshold value is electrification reset chip U0 under-voltage point UVLO-0.
It should be noted that voltage detecting circuit 1311 can also be turned using voltage-regulator diode and DC/DC voltage-dropping types voltage
Change chip and voltage-regulator diode and LDO voltage conversion chips realize that the output voltage according to voltage transformation module 113 produces inspection
Survey voltage.
As a kind of embodiment, transformation voltage source 133 includes power supply chip U1, power supply chip U1 power end with electricity
Pressure modular converter 113 be electrically connected with, power supply chip U1 output end OUT with being electrically connected with by electric system 150, power supply chip U1's
Enable Pin is electrically connected at electrification reset chip U0 output end.
As another embodiment, Fig. 3 is refer to, transformation voltage source 133 includes multiple power supply chips, multiple power supply cores
The power end of piece is electrically connected with voltage transformation module 113, the output end OUT of multiple power supply chips with by electric system 150
It is electrically connected with.The output end of previous power supply chip is electrically connected to the Enable Pin of latter power supply chip, first power supply core
Piece U1 Enable Pin is electrically connected at electrification reset chip U0 output end.The output voltage of multiple power supply chips is reduced successively,
For example, the output voltage of first power supply chip is 3.3V, the output voltage of second power supply chip is 2.5V, the 3rd power supply
The output voltage of chip is 1.2V etc., when electric in automatic switch electric system 100, and transformation voltage source 133 is from first power supply chip
U1 starts upper electricity successively.
In the present embodiment, power supply chip can be DC/DC voltage conversion chips.
The operation principle for the automatic switch electric system 100 that the present embodiment is provided is：It is normal in automatic switch electric system 100
During work, if there is temporary drop, the first divider resistance R1 partial pressure reduction, when first in the output voltage of exterior power supply plant 110
When divider resistance R1 partial pressure decreases below electrification reset chip U0 under-voltage point UVLO-0, then electrification reset chip U0 is triggered
The first powered-down signal is exported so that the power down of transformation voltage source 133；If the output voltage of exterior power supply plant 110 recovers, first
Divider resistance R1 partial pressure rises, when the first divider resistance R1 partial pressure rises to the under-voltage point more than electrification reset chip U0
During UVLO-0, electrification reset chip U0 start-up operations simultaneously persistently export the second powered-down signal in preset time so that become piezoelectricity
The thorough power down of potential source 133, electrification reset chip U0 outputs open electric signal to control transformation voltage source after preset time arrival
133 according to design requirement successively upper electricity, solve exterior power supply plant 110 in the prior art it is unstable and cause circuit system without
The problem of method normal work, with good reliability.
Second embodiment
Fig. 4 is refer to, Fig. 4 shows the structural frames for the automatic switch electric system 200 that second embodiment of the invention is provided
Figure.Automatic switch electric system 200 includes exterior power supply plant 110, automatic switch electric installation 130 and by electric system 150.Automatically open
Powered-down device 130 includes voltage detection module 131 and transformation voltage source 133, and transformation voltage source 133 is electrically connected at voltage conversion
Module 113 and by between electric system 150, voltage detection module 131 and voltage transformation module 113 and the electricity of transformation voltage source 133
Property connection.The automatic switch electric system 200 that the present embodiment is provided, except adding driving chip in voltage detection module 131
1315, and beyond driving chip 1315 is electrically connected between control circuit 1313 and transformation voltage source 133, the connection of other circuits
It is identical with the automatic switch electric system 100 that first embodiment is provided.
In the present embodiment, the drive end RST of the input of driving chip 1315 and electrification reset chip U0 is electrically connected with,
And the output end of driving chip 1315 and the Enable Pin EN of multiple power supply chips are electrically connected with.Driving chip 1315 is used for basis
First powered-down signal of electrification reset chip U0 output, the second powered-down signal and electric signal is opened, drive multiple power supply chips
Electricity is opened in power down simultaneously.
The operation principle for the automatic switch electric system 200 that the present embodiment is provided is：It is normal in automatic switch electric system 200
During work, if there is temporary drop, the first divider resistance R1 partial pressure reduction, when first in the output voltage of exterior power supply plant 110
When divider resistance R1 partial pressure decreases below electrification reset chip U0 under-voltage point UVLO-0, then electrification reset chip U0 is triggered
The first powered-down signal is exported to driving chip 1315, driving chip 1315 drives multiple power supply chip power down；If externally fed system
The output voltage of system 110 recovers, then the first divider resistance R1 partial pressure rises, when the first divider resistance R1 partial pressure rises to greatly
When electrification reset chip U0 under-voltage point UVLO-0, electrification reset chip U0 starts working and persistently exported in preset time
Second powered-down signal is to driving chip 1315 so that driving chip 1315 drives the thorough power down of multiple power supply chips, when default
Between reach after electrification reset chip U0 outputs to open electric signal to driving chip 1315 electric on multiple power supply chips to drive.
3rd embodiment
Fig. 5 is refer to, Fig. 5 shows the structural frames for the automatic switch electric system 300 that third embodiment of the invention is provided
Figure.Automatic switch electric system 300 includes exterior power supply plant 110, automatic switch electric installation 130 and by electric system 150.Automatically open
Powered-down device 130 includes voltage detection module 131, transformation voltage source 133 and powered-down drive module 135, the electricity of transformation voltage source 133
Property be connected to voltage transformation module 113 and by between electric system 150, voltage detection module 131 and voltage transformation module 113 and become
Piezoelectricity potential source 133 is electrically connected with, powered-down drive module 135 be electrically connected at by electric system 150 and voltage detection module 131 it
Between.The automatic switch electric system 300 that the present embodiment is provided, except adding powered-down driving mould in automatic switch electric installation 130
Beyond block 135, other circuit connections are identical with the automatic switch electric system 100 that first embodiment is provided.
In the present embodiment, microcontroller 151, microcontroller 151 and powered-down drive module 135 are included by electric system 150
It is electrically connected with, microcontroller 151 is used to drive powered-down drive module 135 to work.It is used as a kind of embodiment, microcontroller 151
Can be PLD (Programmable Logic Device, PLD), CPU (Central Processing
Unit, central processing unit), CPLD (Complex Programmable Logic Device, CPLD),
FPGA (Field-Programmable Gate Array, field programmable gate array), single-chip microcomputer etc..
Fig. 6 is refer to, powered-down drive module 135 includes pull down resistor R3 and switching tube 1351, and pull down resistor R3 electrically connects
It is connected between the control pole c of switching tube 1351 and ground, the control pole c of switching tube 1351 is switched with being electrically connected with by electric system 150
The first electrode s1 of pipe 1351 is electrically connected with voltage detection module 131, the second electrode s2 ground connection of switching tube 1351.In this reality
Apply in example, switching tube 1351 can be triode Q1 or metal-oxide-semiconductor Q2.
Fig. 7 is refer to, when switching tube 1351 is triode Q1, triode Q1 base stage B and microcontroller 151 electrically connect
Connect, triode Q1 colelctor electrode C and voltage detection module 131 are electrically connected with, triode Q1 emitter E ground connection.When by electricity system
During 150 normal work of uniting, the output low level of microcontroller 151, triode Q1 disconnects, the normal work of voltage detection module 131；When
When being broken down by electric system 150, the output high level driving switch of microcontroller 151 pipe 1351 is turned on, voltage detection module 131
Power down and export the 3rd powered-down signal make the power down of transformation voltage source 133；After the power down of transformation voltage source 133, stopped by electric system 150
Work, the output low level of microcontroller 151, switching tube 1351 is again off, and voltage detection module 131 restores electricity, and pre-
If persistently exporting the 3rd powered-down signal in time T so that after the thorough power down of transformation voltage source 133, then export out electric signal.
Fig. 8 is refer to, when switching tube 1351 is metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q2 grid G and microcontroller 151 electrically connect
Connect, metal-oxide-semiconductor Q2 source S and voltage detection module 131 are electrically connected with, metal-oxide-semiconductor Q2 drain D ground connection, the course of work and switch
It is consistent when pipe 1351 is triode Q1, it will not be repeated here.
The operation principle for the automatic switch electric system 300 that the present embodiment is provided is：When by the normal work of electric system 150
When, switching tube 1351 disconnects, the normal work of automatic switch electric system 300；When being broken down by electric system 150, microcontroller
151 driving switch pipes 1351 are turned on, the power down of voltage detection module 131 and export the 3rd powered-down signal fall transformation voltage source 133
Electricity；After the power down of transformation voltage source 133, it is stopped by electric system 150, microcontroller 151 stops driving switch pipe 1351, switch
Pipe 1351 is again off, and voltage detection module 131 restores electricity and the 3rd powered-down signal is persistently exported in preset time T, makes
Obtain after the thorough power down of transformation voltage source 133, then export out electric signal, so that when realizing that automatic switch electric system 300 breaks down
Realize automatic switch electricity.
Fourth embodiment
Fig. 9 is refer to, Fig. 9 shows the structural frames for the automatic switch electric system 400 that fourth embodiment of the invention is provided
Figure.Automatic switch electric system 400 includes exterior power supply plant 110, automatic switch electric installation 130 and by electric system 150.This implementation
The automatic switch electric system 400 that example is provided, in addition to adding watchdog circuit 152 in by electric system 150, other circuits
Connection is identical with the automatic switch electric system 300 that 3rd embodiment is provided.
In the present embodiment, microcontroller 151 and watchdog circuit 152, watchdog circuit 152 are included by electric system 150
It is electrically connected between microcontroller 151 and powered-down drive module 135, microcontroller 151 is used to drive by watchdog circuit 152
Powered-down drive module 135 is moved to work.
It should be noted that the triode Q1 in the present embodiment could alternatively be metal-oxide-semiconductor Q2.
The operation principle for the automatic switch electric system 400 that the present embodiment is provided is：When by the normal work of electric system 150
When, microcontroller 151 enables watchdog circuit 152, and persistently feeds dog, and watchdog circuit 152 persistently exports low level, triode
Q1 disconnects, the normal work of automatic switch electric system 400；When 151 cisco unity malfunction of microcontroller, watchdog circuit 152 surpasses
When after output high level driving switch pipe 1351 turn on, the power down of voltage detection module 131 simultaneously exports the 3rd powered-down signal and makes change
The power down of piezoelectricity potential source 133；After the power down of transformation voltage source 133, it is stopped by electric system 150, the acquiescence of watchdog circuit 152 is closed
Close, triode Q1 is again off, voltage detection module 131 restores electricity, and persistently export in preset time T the 3rd powered-down letter
Number so that after the thorough power down of transformation voltage source 133, then electric signal is exported out, to realize the automatic detection of automatic switch electric system 400
Failure, and automatically control it is powered-down after open electricity again and restart, meanwhile, watchdog circuit 152 could alternatively be temperature sensor, pressure and pass
Sensor etc..
5th embodiment
Figure 10 is refer to, Figure 10 shows the structure for the automatic switch electric system 500 that fifth embodiment of the invention is provided
Block diagram.Automatic switch electric system 500 includes exterior power supply plant 110, automatic switch electric installation 130 and by electric system 150.This reality
The automatic switch electric system 500 of example offer, in addition to adding communication module 153 in by electric system 150, other circuits are provided
Connection is identical with the automatic switch electric system 300 that 3rd embodiment is provided.
In the present embodiment, communication module 153 is communicated to connect by network 320 with remote control terminal 310, remote control terminal
310 is powered-down for passing through the remote control automatic switch electric system 500 of communication module 153, and communication module 153 can be communication core
Piece, such as SX1278 chips.
In the present embodiment, remote control terminal 310 can be the smart mobile phone of user, it is tablet personal computer, desktop computer, on knee
Pocket computer etc..
It should be noted that the triode Q1 in the present embodiment could alternatively be metal-oxide-semiconductor Q2.
The operation principle for the automatic switch electric system 500 that the present embodiment is provided is：When automatic switch electric system 500 occurs
During failure, remote control terminal 310 sends powered-down instruction to communication module 153；Communication module 153 is received and sent after powered-down instruction
To microcontroller 151, the output high level driving triode Q1 conductings of microcontroller 151, the power down of transformation voltage source 133；Become piezoelectricity
After the power down of potential source 133, it is stopped by electric system 150, triode Q1 is again off, voltage detection module 131 restores electricity, and
The 3rd powered-down signal is persistently exported in preset time T so that after the thorough power down of transformation voltage source 133, then exports out electric signal,
The output of communication module 153 recovers normal cue to remote control terminal 310, to realize remote control automatic switch electric system
500 it is powered-down after open electricity automatically and restart.
In summary, the present invention is provided a kind of automatic switch electric installation and system, the automatic switch electric system, including
Exterior power supply plant, by electric system and automatic switch electric installation.Automatic switch electric installation be electrically connected at exterior power supply plant and
By between electric system, for realizing exterior power supply plant and by the switch electricity between electric system, it includes voltage detection module, become
Piezoelectricity potential source and powered-down drive module, transformation voltage source be electrically connected at exterior power supply plant and by between electric system, voltage examine
Survey module be electrically connected with exterior power supply plant and transformation voltage source, powered-down drive module be electrically connected to voltage detection module and
By between electric system.A kind of automatic switch electric installation and system that the present invention is provided, first, in the output electricity of exterior power supply plant
When pressure temporarily drops, pass through voltage detecting circuit and control the thorough power down of transformation voltage source so that the output voltage of exterior power supply plant is extensive
After multiple, transformation voltage source can solve exterior power supply plant in the prior art unstable and cause according to electric in design requirement
Circuit system can not normal work the problem of, with good reliability；Secondly, do not increased additionally by powered-down drive module
Realize automatic powered-down after automatic switch electric system exception under conditions of controller and open electricity and restart and tele-control system
Open electricity after powered-down to restart, with good practicality.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
Claims (12)
1. a kind of automatic switch electric installation, it is characterised in that applied to exterior power supply plant and by between electric system, realize to by
The switch electricity of electric system, the automatic switch electric installation includes voltage detection module and transformation voltage source, the transformation voltage source
Be electrically connected at the exterior power supply plant and it is described by between electric system, the voltage detection module and the externally fed system
System and the transformation voltage source are electrically connected with；
The voltage detection module is used to produce detection voltage according to the output voltage of the exterior power supply plant, when the detection
The first powered-down signal of output is so that the transformation voltage source power down when voltage is less than predetermined threshold value；When it is described detection voltage progressively on
When being raised above the predetermined threshold value, the voltage detection module persistently exports the second powered-down signal in preset time, so that
The transformation voltage source continues power down in the preset time, and electric signal is opened in output after preset time arrival.
2. automatic switch electric installation as claimed in claim 1, it is characterised in that the voltage detection module includes voltage detecting
Circuit and the control circuit being electrically connected with the voltage detecting circuit, the voltage detecting circuit and the exterior power supply plant
It is electrically connected with the output voltage to obtain the exterior power supply plant and then produces the detection voltage, the control circuit is used for
The first powered-down signal, the second powered-down signal and electric signal is opened according to the detection voltage output.
3. automatic switch electric installation as claimed in claim 2, it is characterised in that the voltage detecting circuit includes the first partial pressure
Resistance and the second divider resistance, first divider resistance and the second divider resistance are series at the exterior power supply plant and ground
Between, the control circuit is electrically connected between first divider resistance and second divider resistance.
4. automatic switch electric installation as claimed in claim 2, it is characterised in that described to control circuit to be electrification reset chip.
5. automatic switch electric installation as claimed in claim 4, it is characterised in that the transformation voltage source includes power supply chip,
The power end of the power supply chip and the exterior power supply plant are electrically connected with, the output end of the power supply chip with it is described by electricity
System is electrically connected with, and the Enable Pin of the power supply chip is electrically connected at the output end of the electrification reset chip.
6. automatic switch electric installation as claimed in claim 4, it is characterised in that the transformation voltage source includes multiple power supply cores
Piece, the power end of multiple power supply chips is electrically connected with the exterior power supply plant, multiple power supply chips it is defeated
Go out end to be electrically connected with by electric system with described, and the output end of the previous power supply chip is electrically connected to described in latter
The Enable Pin of power supply chip, the Enable Pin of first power supply chip is electrically connected at the output of the electrification reset chip
End, the output voltage of multiple power supply chips is reduced successively.
7. automatic switch electric installation as claimed in claim 6, it is characterised in that the voltage detection module also includes driving core
Piece, the input of the driving chip and the electrification reset chip are electrically connected with, and the output end of the driving chip with it is many
The Enable Pin of the individual power supply chip is electrically connected with, and the driving chip is used to be closed according to the described first powered-down signal, second
Electric signal and electric signal is opened, drive the power down simultaneously of multiple power supply chips or open electricity.
8. automatic switch electric installation as claimed in claim 1, it is characterised in that the automatic switch electric installation also includes powered-down
Drive module, the powered-down drive module be electrically connected at it is described by between electric system and the voltage detection module, it is described to close
Electric drive module is used under the driving by electric system, controls the voltage detection module to export the 3rd powered-down signal.
9. automatic switch electric installation as claimed in claim 8, it is characterised in that the powered-down drive module includes pull down resistor
And switching tube, the pull down resistor is electrically connected between the control pole of the switching tube and ground, the control pole of the switching tube
It is electrically connected with described by electric system, the first electrode of the switching tube is electrically connected with the voltage detection module, described to open
Close the second electrode ground connection of pipe.
10. automatic switch electric installation as claimed in claim 9, it is characterised in that the switching tube is triode, three pole
The base stage of pipe is electrically connected with described by electric system, and the colelctor electrode of the triode is electrically connected with the voltage detection module,
The grounded emitter of the triode.
11. a kind of automatic switch electric system, it is characterised in that including exterior power supply plant, by electric system and claim 1-10
Automatic switch electric installation described in any one, the automatic switch electric installation is electrically connected at exterior power supply plant and by electric system
Between.
12. automatic switch electric system as claimed in claim 11, it is characterised in that described to be included microcontroller by electric system,
The microcontroller is electrically connected with powered-down drive module, and the microcontroller is used to drive the powered-down drive module work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691467.9A CN107272809B (en) | 2017-08-14 | 2017-08-14 | It is automatically switched electric installation and system |
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| EP0875986A2 (en) * | 1997-04-29 | 1998-11-04 | Siemens Aktiengesellschaft | Controlling device with microprocessor provided with undervoltage-protection |
| CN101447666A (en) * | 2007-11-27 | 2009-06-03 | 深圳迈瑞生物医疗电子股份有限公司 | Power supply system and power overvoltage safety protection control method |
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| CN107272809B (en) | 2019-06-14 |
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