CN106094964A - There is the microprocessor of electric energy sampling differential amplifier circuit - Google Patents
There is the microprocessor of electric energy sampling differential amplifier circuit Download PDFInfo
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- CN106094964A CN106094964A CN201610701216.XA CN201610701216A CN106094964A CN 106094964 A CN106094964 A CN 106094964A CN 201610701216 A CN201610701216 A CN 201610701216A CN 106094964 A CN106094964 A CN 106094964A
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- resistance
- integrated transporting
- transporting discharging
- microprocessor
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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
- G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
- G05F1/569—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
Abstract
The present invention relates to a kind of microprocessor with electric energy sampling differential amplifier circuit.The voltage signal of transformer output is respectively by being formed the first inverse proportion amplifying circuit by first, second, third and fourth resistance and the first integrated transporting discharging；And formed, by the six, the seven, eight, 12 resistance and the second integrated transporting discharging, difference mode signal and the common-mode signal that the second inverse proportion amplifying circuit obtains, being input to electric energy chip by the 5th resistance, the first electric capacity and the 9th resistance, the second electric capacity the most respectively, the signal that process is obtained by electric energy chip is to microprocessor；The voltage signal of transformer secondary side is after the ten, the 11 electric resistance partial pressures, this voltage signal is through the 13rd, 14,15,16,17 resistance and the amplifying circuit of the 3rd integrated transporting discharging composition, it is amplified signal, then the voltage follower circuit formed through the 16th resistance, the 3rd electric capacity and the 4th integrated transporting discharging can enter microprocessor.The present invention applies in product, saves product cost and improves again controller protection precision.
Description
Technical field
The invention belongs to a kind of low-voltage electrical apparatus microprocessor, particularly relate to one and there is electric energy sampling differential amplifier circuit
Microprocessor.
Background technology
Along with low-voltage electrical apparatus develops into intellectualization times, require more and more higher for low-voltage variation electrical equipment, the most not only limit
In current protection and residual current protecting, the voltage of electrical energy parameter to be had, power factor, frequency, active power, reactive power
Measurement, communication, the function such as frequency analysis.It is then through one that existing intelligent controller realize electrical energy parameter to be measured with four sections of protections
Road signal processing is to microprocessor, then is calculated by microprocessor, processes.Microprocessor should realize basic over current protection
Protect and residual current protecting, also realize the computing of electrical energy parameter, process, compare, judge.Thus can affect microprocessor
The speed of service, the speed of service reduces will make the protection precision of low pressure controller reduce.Protection precision reduces will make low breaking
The device competitiveness in market in road is substantially reduced.If reducing the impact on microprocessor, that is accomplished by selecting high-grade micro-place
Reason device, thus can improve the cost of low-voltage electrical apparatus, be likely to cause the overall dimensions of microprocessor to increase, the most simultaneously
It is easily installed.High-grade microprocessor also has certain requirement to the level of programming personnel, thus can improve cost of labor.
Summary of the invention
The present invention solves that technical problem present in known technology provides a kind of difference sample circuit and electric energy chip
Come together the sampling realizing electric energy electrical network parameter, the microprocessor with electric energy sampling differential amplifier circuit calculating, measuring.
The present invention solves that technical problem is adopted the technical scheme that present in known technology: transformer (T1) secondary
One end of one termination the second resistance (R2) of side leading-out terminal, another of described second resistance (R2) terminates the first integrated transporting discharging (U1)
Negative input, be connected with one end of the 3rd resistance (R3), the other end and described first of described 3rd resistance (R3) simultaneously
The outfan of integrated transporting discharging (U1) connects, and is connected with one end of the 4th resistance (R4) simultaneously, another of described 4th resistance (R4)
End is connected together with the first electric capacity (C1) and the 5th resistance (R5) one end, the other end ground connection of described first electric capacity (C1)；Described
Another termination electric energy chip (U5) of 5th resistance (R5)；The positive input of described first integrated transporting discharging (U1) connects the first resistance
(R1) one end, the other end ground connection of described first resistance (R1)；One end ground connection of the 6th resistance (R6), described 6th resistance
(R6) another terminates the positive input of the second integrated transporting discharging (U2)；The negative input of described second integrated transporting discharging (U2) connects
One end of seven resistance (R7), connects one end of the 12nd resistance (R12) simultaneously, and another termination of described 7th resistance (R7) is described mutually
The other end of sensor (T1) secondary side；Another of described 12nd resistance (R12) terminates the defeated of described second integrated transporting discharging (U2)
Go out end, connect one end of the 8th resistance (R8) simultaneously, described in connect the other end and one end of the second electric capacity (C2) of the 8th resistance (R8)
Connect with one end of the 9th resistance (R9)；The other end ground connection of described second electric capacity (C2), another of described 9th resistance (R9)
Terminating described electric energy chip (U5), described electric energy chip (U5) connects with microprocessor (U6).
One end of one termination described transformer (T1) secondary side of the 11st resistance (R11), described 11st resistance (R11)
Another termination the tenth resistance (R10) and one end of the 14th resistance (R14)；Another termination institute of described tenth resistance (R10)
State the other end of transformer (T1) secondary side；Another termination the 3rd integrated transporting discharging (U3) of described 14th resistance (R14) is just
To input, connect one end of the 13rd resistance (R13), the other end ground connection of described 13rd resistance (R13) simultaneously；15th electricity
The other end of secondary side of the one described transformer of termination (T1) of resistance (R15), another termination of described 15th resistance (R15) the
16 resistance (R16) and one end of the 17th resistance (R17) the negative input with described 3rd integrated transporting discharging (U3) connect；
The other end ground connection of described 16th resistance (R16)；Another of described 17th resistance (R17) terminates described 3rd integrated transporting discharging
(U3) outfan, connects with the 18th resistance (R18) simultaneously, another termination the 3rd electric capacity of described 18th resistance (R18)
(C3) one end the positive input with the 4th integrated transporting discharging (U4) connect, the other end ground connection of described 3rd electric capacity (C3)；
Described 4th integrated transporting discharging (U4) reverse input end is connected with outfan, and connects described microprocessor (U6).
The present invention has the advantage that with good effect: owing to being to use two paths of signals to process, a road is for substantially protecting letter
Number, a road be electrical energy parameter signal.Wherein process voltage signal through differential amplifier circuit, electric energy chip carry out processing, counting
Calculate.Electric energy chip is by the signal of every electrical quantity handled well to microprocessor, and microprocessor only carries out judging, shows, drives
Deng operation.Not interfering with the speed of service of microprocessor completely, so basic defencive function can realize reliably.The present invention transports
Use in product, i.e. save product cost, improve again controller protection precision.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention.
Detailed description of the invention
For present disclosure, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing detailed
It is described as follows:
As shown in Figure 1: one end of transformer T1 secondary side leading-out terminal connecting resistance R2, another termination integrated transporting discharging of resistance R2
The negative input of U1, is connected with one end of resistance R3 simultaneously, and the other end of resistance R3 is connected with the outfan of integrated transporting discharging U1,
Being connected with one end of resistance R4, the other end of resistance R4 is connected with one end of electric capacity C1 and resistance R5, one end of electric capacity C1 simultaneously
Ground connection；Another termination electric energy chip U5 of resistance R5.One end of the positive input connecting resistance R1 of integrated transporting discharging U1, resistance R1's
Other end ground connection.One end ground connection of resistance R6, the positive input of resistance R6 another termination integrated transporting discharging U2；Integrated transporting discharging U2's
One end of negative input connecting resistance R7, simultaneously one end of connecting resistance R12, another of resistance R7 terminates the another of transformer secondary side
One end；Resistance R12 another termination integrated transporting discharging U2 outfan, one end of connecting resistance R8 simultaneously, the other end of resistance R8 with
One end of electric capacity C2 and one end of resistance R9 connect；The other end ground connection of electric capacity C2, another termination U5 electric energy chip of resistance R9,
Electric energy chip U5 connects with microprocessor U6.
The one termination transformer T1 secondary side of resistance R11, one end of other end connecting resistance R10 and R14 of resistance R11；Electricity
The other end of another termination transformer secondary side of resistance R10；The positive input of another termination integrated transporting discharging U3 of resistance R14,
One end of connecting resistance R13 simultaneously, the other end ground connection of resistance R13.The one of resistance R15 terminates another of the secondary side of transformer T1
End, the other end connecting resistance R16 of resistance R15 and one end of resistance R17；The other end ground connection of resistance R16；Another of resistance R17
The outfan of termination integrated transporting discharging U3, connects with one end of resistance R18 simultaneously, one end of another termination capacitor C3 of resistance R18
And and the positive input of integrated transporting discharging U4 connect, the other end ground connection of electric capacity C3；Integrated transporting discharging U4 reverse input end and output
End is connected, and meets microprocessor U6.
Function describes: the voltage signal of transformer T1 output gets involved integrated transporting discharging U1, U2 respectively from resistance R2, resistance R7；
Resistance R1, resistance R2, resistance R3, resistance R4 and integrated transporting discharging U1 form inverse proportion amplifying circuit；Resistance R6, resistance R7, resistance
R8, resistance R12 and integrated transporting discharging U2 form inverse proportion amplifying circuit；Two leading-out terminals of transformer secondary side are respectively through two inverse ratios
Example amplifying circuit, the difference mode signal obtained and common-mode signal resistance R5 respectively, electric capacity C1 and resistance R9, electric capacity C2 obtain electric energy core
The signal that sheet U5 is capable of identify that, electric energy chip obtains frequency signal, power factor, active power, idle merit through computing, process
Rate signal is to microprocessor U6, and microprocessor is sent to display through processing, judging or drives, it is achieved thereby that the electricity of controller
The measurement of energy parameter and defencive function.
The voltage signal of transformer T1 secondary side is through resistance R10, R11 electric resistance partial pressure；After dividing potential drop, voltage signal is through resistance
R14, resistance R13, resistance R15, resistance R16, resistance R17 and the amplifying circuit of integrated transporting discharging U3 composition, be amplified signal, warp
The voltage follower circuit of resistance R16, electric capacity C3 and integrated transporting discharging U4 composition enters microprocessor U6.Microprocessor U6 is through processing
Original overcurrent protection and residual current protecting is realized with computing.
Claims (1)
1. there is a microprocessor for electric energy sampling differential amplifier circuit, it is characterized in that: transformer (T1) secondary side leading-out terminal
One end of a termination the second resistance (R2), the negative sense that another of described second resistance (R2) terminates the first integrated transporting discharging (U1) is defeated
Enter end, be connected with one end of the 3rd resistance (R3) simultaneously, the other end of described 3rd resistance (R3) and described first integrated transporting discharging
(U1) outfan connects, and is connected with one end of the 4th resistance (R4), the other end and first of described 4th resistance (R4) simultaneously
Electric capacity (C1) connects together with the 5th resistance (R5) one end, the other end ground connection of described first electric capacity (C1)；Described 5th resistance
(R5) another termination electric energy chip (U5)；The positive input of described first integrated transporting discharging (U1) connects the one of the first resistance (R1)
End, the other end ground connection of described first resistance (R1)；One end ground connection of the 6th resistance (R6), described 6th resistance (R6) other end
Connect the positive input of the second integrated transporting discharging (U2)；The negative input of described second integrated transporting discharging (U2) connects the 7th resistance (R7)
One end, connect one end of the 12nd resistance (R12) simultaneously, another of described 7th resistance (R7) terminates described transformer (T1) two
The other end of secondary side；The outfan of another described second integrated transporting discharging (U2) of termination of described 12nd resistance (R12), connects simultaneously
One end of 8th resistance (R8), described in connect the other end of the 8th resistance (R8) and one end of the second electric capacity (C2) and the 9th resistance
(R9) one end connects；The other end ground connection of described second electric capacity (C2), another of described 9th resistance (R9) terminates described electricity
Energy chip (U5), described electric energy chip (U5) connects with microprocessor (U6).
One end of one termination described transformer (T1) secondary side of the 11st resistance (R11), described 11st resistance (R11) another
One termination the tenth resistance (R10) and one end of the 14th resistance (R14)；Another termination of described tenth resistance (R10) is described mutually
The other end of sensor (T1) secondary side；The forward of another termination the 3rd integrated transporting discharging (U3) of described 14th resistance (R14) is defeated
Enter end, connect one end of the 13rd resistance (R13), the other end ground connection of described 13rd resistance (R13) simultaneously；15th resistance
(R15) other end of the secondary side of the described transformer of a termination (T1), another termination the tenth of described 15th resistance (R15)
Six resistance (R16) and one end of the 17th resistance (R17) the negative input with described 3rd integrated transporting discharging (U3) connect；Institute
State the other end ground connection of the 16th resistance (R16)；Another of described 17th resistance (R17) terminates described 3rd integrated transporting discharging
(U3) outfan, connects with the 18th resistance (R18) simultaneously, another termination the 3rd electric capacity of described 18th resistance (R18)
(C3) one end the positive input with the 4th integrated transporting discharging (U4) connect, the other end ground connection of described 3rd electric capacity (C3)；
Described 4th integrated transporting discharging (U4) reverse input end is connected with outfan, and connects described microprocessor (U6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701216.XA CN106094964B (en) | 2016-08-19 | 2016-08-19 | Microprocessor with electric energy sampling differential amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701216.XA CN106094964B (en) | 2016-08-19 | 2016-08-19 | Microprocessor with electric energy sampling differential amplifier circuit |
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| CN106094964A true CN106094964A (en) | 2016-11-09 |
| CN106094964B CN106094964B (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610701216.XA Active CN106094964B (en) | 2016-08-19 | 2016-08-19 | Microprocessor with electric energy sampling differential amplifier circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733384A (en) * | 2017-11-21 | 2018-02-23 | 雷顿电气科技有限公司 | Folk art term bit arithmetic amplifier circuit |
| CN108711827A (en) * | 2018-04-27 | 2018-10-26 | 天津市百利电气有限公司 | Leakage circuit breakers signal processing apparatus |
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| CN2140064Y (en) * | 1992-09-03 | 1993-08-11 | 威恩电子有限公司 | Magnetic card auto-count liquid crystal indicating watt-hour meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107733384A (en) * | 2017-11-21 | 2018-02-23 | 雷顿电气科技有限公司 | Folk art term bit arithmetic amplifier circuit |
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| Publication number | Publication date |
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| CN106094964B (en) | 2017-12-12 |
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