CN104142480B - Power Level identification circuit, sign circuit and Power Level electric power system - Google Patents
Power Level identification circuit, sign circuit and Power Level electric power system Download PDFInfo
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- CN104142480B CN104142480B CN201310172646.3A CN201310172646A CN104142480B CN 104142480 B CN104142480 B CN 104142480B CN 201310172646 A CN201310172646 A CN 201310172646A CN 104142480 B CN104142480 B CN 104142480B
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Abstract
A kind of Power Level identification circuit, including first voltage converting unit, data processing unit, the first power interface, detection unit, Signal Pretreatment unit.First power interface is used to receive power supply signal and Power Level encoded signal.Detection unit is used to filter the power supply signal in first power interface.Signal Pretreatment unit is used to carry out waveform shaping to Power Level encoded signal.Data processing unit is used to recognize the level of signal of the Power Level encoded signal after the shaping.The present invention also provides a kind of Power Level sign circuit, Power Level electric power system.Above-mentioned Power Level identification circuit, Power Level sign circuit and Power Level electric power system transmit to terminal device Power Level information by power interface, realize the terminal device automatic identification power supply signal for being received and the switching for carrying out corresponding modes, it is to avoid cause the infringement to terminal device because user is mixed.
Description
Technical field
The present invention relates to identification circuit and sign circuit, more particularly to a kind of automatic identification Power Level electric power system.
Background technology
Currently, different voltages, power power supply adaptor due to its joints it is similar, user easily causes mixed
With, once by the small power supply adaptor of power supply capacity with the big terminal device of power consumption or by the big power adaptation of power supply capacity
Device is used on the small terminal device of power consumption, and it can all cause damage to terminal device.Therefore, it is badly in need of a kind of improved technical side
Case overcomes disadvantages mentioned above.
The content of the invention
In view of this, a kind of Power Level identification circuit need to be provided, the level of signal of the power supply signal for receiving can be recognized.
Separately, also need to provide a kind of Power Level sign circuit, the power supply signal with level of signal sign can be provided.
Additionally, also needing to provide a kind of Power Level electric power system, the level of signal of the power supply signal for receiving can be recognized.
A kind of Power Level identification circuit that embodiment of the present invention is provided, for the signal of the power supply signal according to input
Grade carries out corresponding modes switching, including first voltage converting unit, data processing unit, the first power interface, detection unit,
Signal Pretreatment unit.First power interface is electrically connected at the first voltage converting unit, for receiving power supply letter
Number and Power Level encoded signal.The first voltage converting unit is used to be electrically connected at first power interface, is used for
The power supply signal is received from first power interface and voltage conversion is carried out to power supply signal.The detection unit is used for electricity
Property is connected to first power interface, for filtering the power supply signal in first power interface, to obtain the power supply
Grade encoded signal.The Signal Pretreatment unit is used to be electrically connected at the detection unit, for the Power Level
Encoded signal carries out waveform shaping.The data processing unit is used to be electrically connected at the Signal Pretreatment unit, for knowing
The level of signal of the Power Level encoded signal after not described shaping, and corresponding modes switching is carried out according to the level of signal.
Preferably, the level of signal includes power grade and/or voltage class.
Preferably, the Power Level identification circuit also includes data relay unit, for being electrically connected at the signal
Between pretreatment unit and the data processing unit, for receiving and the Power Level encoded signal after the shaping is stored；
The data processing unit is additionally operable to read and recognize the Power Level encoded signal in the data relay unit after shaping
Level of signal, corresponding modes switching is carried out with according to the level of signal.
Preferably, the data processing unit searches the Power Level encoded signal storehouse for prestoring to recognize by comparison
The level of signal of the Power Level encoded signal, respective mode is carried out with according to the level of signal of the Power Level encoded signal
Formula switches.
Preferably, the data relay unit is single-chip microcomputer, field programmable gate array, PLD, micro-control
Any one in unit processed.
Preferably, the detection unit is Zener diode, and positive pole is electrically connected at the Signal Pretreatment unit, negative pole
It is electrically connected at first power interface.
Preferably, the Signal Pretreatment unit is used for the Power Level encoded signal shaping for exporting the detection unit
For the signal waveform that the data processing unit can be recognized.
Preferably, the Signal Pretreatment unit includes optocoupler sensor, resistance.Optocoupler sensor includes input, defeated
Go out end, the input is electrically connected at the detection unit, and the output end is electrically connected at the data processing unit.Electricity
Resistance is electrically connected between the input of the optocoupler sensor and the detection unit.
Preferably, the Power Level identification circuit also includes multiple functional modules, wherein the data processing unit is also
For closing the multiple functional module when first power interface is not received by the Power Level encoded signal, when
First power interface receives the Power Level encoded signal and after the data processing unit identifies the shaping
Power Level encoded signal level of signal when, be turned on and off according to the corresponding switch mode of level of signal for prestoring
The corresponding function module.
Preferably, the multiple functional module includes POE functional module.
A kind of Power Level sign circuit that embodiment of the present invention is provided, for the power supply signal of output to be carried out into signal
Grade designation, Power Level sign circuit include second voltage converting unit, second source interface, the first isolated location,
Level of signal coding unit, the second isolated location.The second source interface is electrically connected at the second voltage converting unit,
Power supply signal for receiving the second voltage converting unit output.First isolated location is used to be electrically connected at described second
Between power interface and the second voltage converting unit, the Power Level for isolating in the second source interface encodes letter
Number, so that the second voltage converting unit transmits power supply signal by the second source interface.Level of signal coding unit
For being electrically connected at the second voltage converting unit, for the electricity for recognizing and exported according to the second voltage converting unit
The level of signal of source signal produces corresponding Power Level encoded signal.Second isolated location is used to be electrically connected at the letter
Number between grade coding unit and the second source interface, for isolating the power supply signal in the second source interface, with
The level of signal coding unit is set to transmit the Power Level encoded signal by the second source interface.
Preferably, the level of signal includes power grade and/or voltage class.
Preferably, the level of signal coding unit is used to enter the power supply signal according to coding rule set in advance
Row coding, to produce corresponding Power Level encoded signal.
Preferably, first isolated location is diode, and positive pole is electrically connected at the second voltage converting unit, is born
Pole is electrically connected at the second source interface.
Preferably, the level of signal coding unit be single-chip microcomputer, field programmable gate array, PLD,
Any one in micro-control unit.
Preferably, second isolated location is electric capacity, and one end is electrically connected at the level of signal coding unit, another
End is electrically connected at first isolated location with the common port of the second source interface.
A kind of Power Level electric power system that embodiment of the present invention is provided, including Power Level identification circuit, power supply etc.
Level sign circuit.The Power Level identification circuit carries out corresponding modes and cuts for the level of signal of the power supply signal according to input
Change, including first voltage converting unit, data processing unit, the first power interface, detection unit, Signal Pretreatment unit.Institute
State the first power interface and be electrically connected at the first voltage converting unit, for receiving power supply signal and being sent to described first
Voltage conversion unit, first power interface is additionally operable to transmit Power Level encoded signal.Detection unit is used to be electrically connected with
In first power interface, for filtering the power supply signal in first power interface, to obtain Power Level coding letter
Number.Signal Pretreatment unit is used to be electrically connected at the detection unit and the data processing unit, for the detection
The Power Level encoded signal of unit output carries out waveform shaping and is sent to the data processing unit.The data processing list
Unit is used to recognize the level of signal of the Power Level encoded signal after the shaping, and respective mode is carried out with according to the level of signal
Formula switches.The Power Level sign circuit is used to for the power supply signal of output to carry out level of signal sign, including second voltage
Converting unit, second source interface, the first isolated location, level of signal coding unit, the second isolated location.The second source
Interface is electrically connected at the second voltage converting unit, the power supply letter for receiving the second voltage converting unit output
Number, the second source interface is additionally operable to transmit Power Level encoded signal.First isolated location is described for being electrically connected at
Between second source interface and the second voltage converting unit, the Power Level for isolating in the second source interface is compiled
Code signal, so that the second voltage converting unit transmits power supply signal by the second source interface.Level of signal is encoded
Unit is used to be electrically connected at the second voltage converting unit, is exported for recognizing and according to the second voltage converting unit
The level of signal of power supply signal produce corresponding Power Level encoded signal.Second isolated location is used to be electrically connected at institute
State between level of signal coding unit and the second source interface, for the power supply letter isolated in the second source interface
Number, so that the level of signal coding unit transmits the Power Level encoded signal by the second source interface.Wherein,
Power Level sign circuit is by the second source interface and first power interface by the power supply signal and institute
State Power Level encoded signal and be sent to the Power Level identification circuit.
Above-mentioned Power Level identification circuit, Power Level indicate circuit and Power Level electric power system by Power Level information
Transmitted to terminal device by power interface, realize power supply signal that terminal device automatic identification received and carry out corresponding modes
Switching, it is to avoid terminal device is caused damage because user is mixed.
Brief description of the drawings
Fig. 1 is that Power Level identification circuit of the present invention, Power Level sign circuit and Power Level electric power system one are implemented
The module map of mode.
Fig. 2 is the module map that Power Level identification circuit of the present invention indicates another implementation method of circuit with Power Level.
Fig. 3 is the circuit diagram that Power Level identification circuit of the present invention indicates the implementation method of circuit one with Power Level.
Main element symbol description
Power Level identification circuit 10,10a
Power Level indicates circuit 20
First voltage converting unit 101
First power interface 102
Data processing unit 103
Detection unit 104
Signal Pretreatment unit 105
Data relay unit 106
Second voltage converting unit 201
Second source interface 202
First isolated location 203
Second isolated location 204
Level of signal coding unit 205
Zener diode D1
Diode D2
Resistance R1
Optocoupler sensor Q1
Electric capacity C1
Following specific embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Specific embodiment
Fig. 1 is Power Level identification circuit 10, Power Level of the present invention sign circuit 20 and Power Level electric power system one
The module map of implementation method.
In the present embodiment, Power Level electric power system includes that Power Level identification circuit 10 indicates electricity with Power Level
Road 20.Power Level identification circuit 10 carries out corresponding modes switching, including first according to the level of signal of the power supply signal of input
Voltage conversion unit 101, the first power interface 102, data processing unit 103, detection unit 104, Signal Pretreatment unit
105.First power interface 102 is electrically connected at first voltage converting unit 101, is compiled for receiving power supply signal and Power Level
Code signal.Detection unit 104 is electrically connected at the first power interface 102, for filtering the letter of the power supply in the first power interface 102
Number, to obtain Power Level encoded signal.Signal Pretreatment unit 105 is electrically connected at detection unit 104 and data processing list
Unit 103, for carrying out waveform shaping to the Power Level encoded signal that detection unit 104 is exported and being sent to data processing unit
103.Data processing unit 103 is used to recognize the level of signal of the Power Level encoded signal after shaping, with according to level of signal
Carry out corresponding modes switching.
In the present embodiment, the power supply signal of output is carried out level of signal sign by Power Level sign circuit 20, is wrapped
Include second voltage converting unit 201, second source interface 202, the first isolated location 203, second isolated location 204, signal etc.
Level coding unit 205.Second source interface 202 is electrically connected at second voltage converting unit 201, turns for receiving second voltage
Change the power supply signal of the output of unit 201 and the Power Level encoded signal of the output of level of signal coding unit 205.First isolation is single
Unit 203 is electrically connected between second source interface 202 and second voltage converting unit 201, for isolating second source interface
Power Level encoded signal in 202, so as to second voltage converting unit 201 transmits power supply by second source interface 202 believe
Number.Level of signal coding unit 205 is electrically connected at second voltage converting unit 201, is turned for recognizing and according to second voltage
The level of signal for changing the power supply signal of the output of unit 201 produces Power Level encoded signal.Second isolated location 204 is electrically connected with
Between level of signal coding unit 205 and second source interface 202, for the power supply letter isolated in second source interface 202
Number, so that level of signal coding unit 205 transmits Power Level encoded signal by second source interface 202.
In the present embodiment, level of signal includes power grade and/or voltage class.
In the present embodiment, the first power interface 102, second source interface 202 can be circular hole formula interfaces, it is also possible to
It is other kinds of standard interface.
In the present embodiment, the first power interface 102 can be plugged together one with second source interface 202 for detachable
Rise.First voltage converting unit 101 passes through the first power interface 102, second source interface 202 from second voltage converting unit
201 acquirement power supply signals simultaneously carry out voltage conversion, are powered with to Power Level identification circuit 10.First voltage converting unit
101st, second voltage converting unit 201 can be that the power transfer module of direct current supply is realized using prior art.
Fig. 2 is the module that Power Level identification circuit 10a of the present invention indicates another implementation method of circuit 20 with Power Level
Figure.Power Level identification circuit 10a is essentially identical with Power Level identification circuit shown in Fig. 1 10 in present embodiment.Difference
Place is that Power Level identification circuit 10a also includes data relay unit 106, and data relay unit 106 is electrically connected at signal
Between pretreatment unit 105 and data processing unit 103, for receiving and store that Signal Pretreatment unit 105 exported it is whole
Power Level encoded signal after shape.Data processing unit 103 is additionally operable to read and in identification data relay unit 106 after shaping
Power Level encoded signal level of signal, corresponding modes are carried out with the level of signal according to Power Level encoded signal and are cut
Change.
Explained in detail an embodiment of the present invention Power Level identification circuit 10a and Power Levels of Fig. 3 indicates the electricity of circuit 20
Lu Tu.In the present embodiment, detection unit 104 is Zener diode D1, and the positive pole of Zener diode D1 is electrically connected at letter
Number pretreatment unit 105, the negative pole of Zener diode D1 is electrically connected at the first power interface 102.Signal Pretreatment unit 105
Including optocoupler sensor Q1, resistance R1.Optocoupler sensor Q1 includes input, output end, the input electricity of optocoupler sensor Q1
Property is connected to the positive pole of Zener diode D1, and the output end of optocoupler sensor Q1 is electrically connected at data relay unit 106.Optocoupler
Sensor Q1 inputs are emission part, inside include light emitting diode, and optocoupler sensor Q1 output ends are acceptance division, are inside included
Phototriode, optocoupler sensor Q1 inputs are coupled with optocoupler sensor Q1 output ends by light, by luminous intensity
Change the change of electric signal is converted into realize the transmission of signal.Resistance R1 is electrically connected at the input of optocoupler sensor Q1
And the positive pole of Zener diode D1 between.First isolated location 203 is diode D2, and the positive pole of diode D2 is electrically connected at the
Two voltage conversion units 201, the negative pole of diode D2 is electrically connected at second source interface 202.Second isolated location 204 is electricity
Hold C1, electric capacity C1 one end is electrically connected at level of signal coding unit 205, and the other end is electrically connected at the electricity of diode D2 and second
The common port of source interface.In the present embodiment, the first power interface 102, the Power Level of the transmission of second source interface 202 are compiled
Code signal is square-wave signal, and the power supply signal of transmission is DC power signal.The breakdown reverse voltage of Zener diode D1 is equal to
The voltage of the output of second voltage converting unit 201, so that Zener diode D1 can filter the first power interface 102 transmitting
In power supply signal, so as to obtain Power Level encoded signal and be sent to Signal Pretreatment unit 105.Passed by controlling optocoupler
The conducting of sensor Q1 carries out waveform shaping with the Power Level encoded signal of closure zener diode D1 outputs, it is to avoid in transmission
During Power Level encoded signal the distortion being likely to occur so that data relay unit 106 or data processing unit 103 are not
The Power Level encoded signal for receiving can be recognized.Using the one-way conduction of diode D2, so that second voltage conversion is single
Unit realizes isolating with Power Level encoded signal.Lead to the characteristic of exchange resistance direct current using electric capacity C1, so that level of signal is compiled
Code unit 205 is realized isolating with power supply signal.
In the present embodiment, in order that the voltage of the input of first voltage converting unit 101 is equal to second voltage and changes list
The voltage of first 201 outputs, the frequency of Power Level encoded signal is preferably much less than the switch of first voltage converting unit 101 frequently
Rate, so that first voltage converting unit 101 can automatically filter the Power Level encoded signal in the first power interface 102,
Obtain power supply signal.In other implementation methods of the invention, it is also possible to changed in the first power interface 102 and first voltage
A filter circuit is set up between unit 101 to filter the Power Level encoded signal in the first power interface 102.
In the present embodiment, Power Level identification circuit 10a also includes multiple functional modules.Data processing unit 103
Can be central processing unit, or other can carry out the process chip of data processing.Data processing unit 103 is searched by comparing
The Power Level encoded signal storehouse for prestoring recognizes the level of signal of the Power Level encoded signal of reception.In this embodiment party
Level of signal can be power grade in formula, or voltage class, it is also possible to while comprising power grade and voltage class.
Data processing unit 103 carries out corresponding modes switching, data processing list according to level of signal control Power Level identification circuit 10a
When the level of signal of Power Level encoded signal is identified, data processing unit 103 is according to signal for prestoring etc. for unit 103
The corresponding switch mode of level carries out the selection switching of corresponding modes, data processing unit 103 it is unidentified go out Power Level coding
The level of signal of signal or when being not detected by Power Level encoded signal, Power Level identification circuit 10a break-ofves are closed
Multiple functional modules, it is to avoid incorrect power supply signal causes the infringement to Power Level identification circuit 10a.Data processing unit
103 when the level of signal of Power Level encoded signal is identified, Power Level is recognized according to the switch mode for prestoring
Circuit 10a carries out the selection switching of corresponding modes, so that correspondence is turned on and off corresponding functional module.For example work as level of signal
During for power grade, when the power of the power supply signal of Power Level identification circuit 10a receptions can not meet Power Level identification
In circuit 10a during the power demand of all functional module operations, by selectively closing off Power Level identification circuit 10a in
Partial function module, so that Power Level identification circuit 10a also can be in running order by receiving the power supply signal, it is real
Showed Power Level identification circuit 10a carries out corresponding modes according to the different level of signal of the power supply signal for receiving, it is to avoid go out
Existing electricity shortage makes the phenomenon of power supply circuit instantaneous trip due to overcurrent protection.
In the present embodiment, multiple functional modules can include POE functional module, it is also possible to including other
The functional module of purposes.
In the present embodiment, level of signal coding unit 205 turns according to coding rule set in advance to second voltage
The power supply signal for changing the output of unit 201 is encoded, to produce corresponding Power Level encoded signal.Data relay unit
106th, level of signal coding unit 205 can be single-chip microcomputer, field programmable gate array, PLD, micro-control unit
Deng any one.
Above-mentioned Power Level identification circuit, Power Level indicate circuit and Power Level electric power system by Power Level information
Transmitted to terminal device by power interface, realize power supply signal that terminal device automatic identification received and carry out corresponding modes
Switching, it is to avoid cause the infringement to terminal device because user is mixed.
Claims (17)
1. a kind of Power Level identification circuit, the level of signal for the power supply signal according to input carries out corresponding modes switching,
Characterized in that, the Power Level identification circuit includes：
First power interface, for receiving power supply signal and Power Level encoded signal；
First voltage converting unit, for being electrically connected at first power interface, for being connect from first power interface
Receive the power supply signal and voltage conversion is carried out to power supply signal；
Detection unit, it is described to isolate for filtering the power supply signal for being electrically connected at first power interface
Power Level encoded signal, the detection unit is Zener diode, and positive pole is electrically connected at the Signal Pretreatment unit, is born
Pole is electrically connected at first power interface；
Signal Pretreatment unit, for being electrically connected at the detection unit, for being carried out to the Power Level encoded signal
Waveform shaping；And
Data processing unit, for being electrically connected at the Signal Pretreatment unit, for recognizing power supply after the shaping etc.
The level of signal of level encoded signal, and corresponding modes switching is carried out according to the level of signal；
Wherein, when first power interface receives the Power Level encoded signal and the data processing unit is identified
During the level of signal of the Power Level encoded signal after the shaping, according to the corresponding switch mode of level of signal for prestoring
Accordingly it is turned on and off functional module.
2. Power Level identification circuit as claimed in claim 1, it is characterised in that the level of signal includes power grade
And/or voltage class.
3. Power Level identification circuit as claimed in claim 1, it is characterised in that also including data relay unit, for electricity
Property is connected between the Signal Pretreatment unit and the data processing unit, for receiving and stores the electricity after the shaping
Source grade encoded signal；The data processing unit is additionally operable to read and recognize the power supply in the data relay unit after shaping
The level of signal of grade encoded signal, corresponding modes switching is carried out with according to the level of signal.
4. the Power Level identification circuit as described in claim 1 or 3, it is characterised in that the data processing unit by than
The level of signal of the Power Level encoded signal is recognized to searching the Power Level encoded signal storehouse for prestoring, with basis
The level of signal of the Power Level encoded signal carries out corresponding modes switching.
5. Power Level identification circuit as claimed in claim 1, it is characterised in that the data processing unit is identifying
When stating the level of signal of the Power Level encoded signal after shaping, the data processing unit is according to the switch mode for prestoring
Carry out corresponding modes selection switching, the data processing unit it is unidentified go out the shaping after Power Level encoded signal
Level of signal when, the Power Level identification circuit break-off.
6. Power Level identification circuit as claimed in claim 3, it is characterised in that the data relay unit be single-chip microcomputer,
Any one in field programmable gate array, PLD.
7. Power Level identification circuit as claimed in claim 1, it is characterised in that the Signal Pretreatment unit is used for institute
The Power Level encoded signal for stating detection unit output is shaped as the signal waveform that the data processing unit can be recognized.
8. Power Level identification circuit as claimed in claim 1, it is characterised in that the Signal Pretreatment unit includes：
Optocoupler sensor, including input, output end, the input are electrically connected at the detection unit, the output end
It is electrically connected at the data processing unit；And
Resistance, is electrically connected between the input of the optocoupler sensor and the detection unit.
9. Power Level identification circuit as claimed in claim 1, it is characterised in that also including multiple functional modules, its
Described in data processing unit be additionally operable to when first power interface is not received by the Power Level encoded signal close
Close the multiple functional module.
10. Power Level identification circuit as claimed in claim 9, it is characterised in that the multiple functional module includes ether
Net function of supplying power module.
11. a kind of Power Level sign circuits, for the power supply signal of output to be carried out into level of signal sign, the Power Level
Sign circuit includes second voltage converting unit, second source interface, and the second source interface is electrically connected at described second
Voltage conversion unit, the power supply signal for receiving the second voltage converting unit output, it is characterised in that described power supply etc.
Level sign circuit also includes：
First isolated location, for being electrically connected between the second source interface and the second voltage converting unit, uses
In isolating the Power Level encoded signal in the second source interface, so that the second voltage converting unit is by described the
Two power interfaces transmit power supply signal；
Level of signal coding unit, for being electrically connected at the second voltage converting unit, for recognizing and according to described the
The level of signal of the power supply signal of two voltage conversion units output produces corresponding Power Level encoded signal；And
Second isolated location, for being electrically connected between the level of signal coding unit and the second source interface, uses
In the power supply signal in the second source interface is isolated, so that the level of signal coding unit is connect by the second source
Power Level encoded signal described in port transmission.
12. Power Level sign circuits as claimed in claim 11, it is characterised in that the level of signal includes power grade
And/or voltage class.
13. Power Level sign circuits as claimed in claim 11, it is characterised in that the level of signal coding unit is used for
The power supply signal is encoded according to coding rule set in advance, to produce corresponding Power Level encoded signal.
14. Power Level sign circuits as claimed in claim 11, it is characterised in that first isolated location is two poles
Pipe, positive pole is electrically connected at the second voltage converting unit, and negative pole is electrically connected at the second source interface.
15. Power Level sign circuits as claimed in claim 11, it is characterised in that the level of signal coding unit is single
Any one in piece machine, field programmable gate array, PLD.
16. Power Level sign circuits as claimed in claim 11, it is characterised in that second isolated location is electric capacity,
One end is electrically connected at the level of signal coding unit, and the other end is electrically connected at first isolated location and described second
The common port of power interface.
A kind of 17. Power Level electric power systems, including：
Power Level identification circuit as described in any one in claim 1-10；
Power Level sign circuit as described in any one in claim 11-16；
Wherein, Power Level sign circuit by the second source interface and first power interface by the power supply
Signal and the Power Level encoded signal are sent to the Power Level identification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172646.3A CN104142480B (en) | 2013-05-10 | 2013-05-10 | Power Level identification circuit, sign circuit and Power Level electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310172646.3A CN104142480B (en) | 2013-05-10 | 2013-05-10 | Power Level identification circuit, sign circuit and Power Level electric power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104142480A CN104142480A (en) | 2014-11-12 |
| CN104142480B true CN104142480B (en) | 2017-05-31 |
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ID=51851710
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310172646.3A Expired - Fee Related CN104142480B (en) | 2013-05-10 | 2013-05-10 | Power Level identification circuit, sign circuit and Power Level electric power system |
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| Country | Link |
|---|---|
| CN (1) | CN104142480B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7283070B1 (en) * | 2003-12-19 | 2007-10-16 | Sun Microsystems, Inc. | Dynamic calibration of I/O power supply level |
| CN101640473A (en) * | 2008-08-01 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Power adapter and corresponding electronic equipment |
| CN101651403A (en) * | 2008-08-13 | 2010-02-17 | 鸿富锦精密工业（深圳）有限公司 | Power supply equipment, power utilization equipment, power supply and utilization system, as well as power supply method and power utilization method |
| CN102882692A (en) * | 2011-07-12 | 2013-01-16 | 智邦科技股份有限公司 | Network power supply control system, network power supply equipment and network power receiving device thereof |
-
2013
- 2013-05-10 CN CN201310172646.3A patent/CN104142480B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7283070B1 (en) * | 2003-12-19 | 2007-10-16 | Sun Microsystems, Inc. | Dynamic calibration of I/O power supply level |
| CN101640473A (en) * | 2008-08-01 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Power adapter and corresponding electronic equipment |
| CN101651403A (en) * | 2008-08-13 | 2010-02-17 | 鸿富锦精密工业（深圳）有限公司 | Power supply equipment, power utilization equipment, power supply and utilization system, as well as power supply method and power utilization method |
| CN102882692A (en) * | 2011-07-12 | 2013-01-16 | 智邦科技股份有限公司 | Network power supply control system, network power supply equipment and network power receiving device thereof |
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| Publication number | Publication date |
|---|---|
| CN104142480A (en) | 2014-11-12 |
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