CN110361671A - A kind of sampling module for UPS - Google Patents
A kind of sampling module for UPS Download PDFInfo
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- CN110361671A CN110361671A CN201810305713.7A CN201810305713A CN110361671A CN 110361671 A CN110361671 A CN 110361671A CN 201810305713 A CN201810305713 A CN 201810305713A CN 110361671 A CN110361671 A CN 110361671A
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- 238000005070 sampling Methods 0.000 title claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims description 28
- 230000005611 electricity Effects 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 240000001548 Camellia japonica Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000018597 common camellia Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a kind of sampling modules for UPS, it include: current sampling circuit and voltage sampling circuit, the output end of the current sampling circuit and voltage sampling circuit respectively with dsp controller first, the connection of 2nd A/D interface, the current sampling circuit includes: the closed-loop Hall current sensor of concatenation, amplifying circuit, biasing circuit, first voltage follower, the output end of the first voltage follower is connect with the first A/D interface, the voltage sampling circuit includes: the Hall voltage sensor of concatenation, inverting amplifier, second voltage follower, voltage regulator circuit, the output end of the voltage regulator circuit is connect with the 2nd A/D interface.Utilize current sampling circuit and voltage sampling circuit, the electric current and voltage of alternating current are sampled simultaneously, and before being sampled using dsp controller, preliminary Linear Amplifer is carried out using amplifying circuit and see-saw circuit and is calculated, so that dsp controller sampling is more accurate.It can be used in UPS manufacture.
Description
Technical field
The present invention relates to switch power technology field, in particular to a kind of sampling module for UPS.
Background technique
Uninterruptible power supply (UPS) is a kind of very important emergency service equipment in outside.When input alternating current interrupts,
UPS, which can be continued for a period of time, supplies electricity to other equipment such as office computer, enables us to have the sufficient time to go to be answered
It is right；Simultaneously when alternating current is abnormal, UPS can also effectively purify alternating current.Meanwhile uninterruptible power supply is as a kind of
Power electronic equipment, the inverter circuit with maintenance-free stored energy equipment and automatic control type also have analog circuit
And digital circuit.With the development of society, UPS, in factory, company, the even every field such as family have obtained widely answering
With the importance of UPS will obtain raising increasingly.
By the statistical data of Internet data center, because causing the failure of apparatus such as computer the problem of power supply, this ratio
Example accounts for about percent 45 or so.In addition, the power supply various kinds problem such as that there are also voltage transients is excessively high, input power-off, voltage ripple are excessive.
Simultaneously in China, the number that big city, medium-sized city and small city or villages and small towns averagely power off be respectively 0.5 time monthly, 2 times it is every
Month and 4 times monthly.From the above it can be seen that in order to solve the problems, such as power supply instability, a UPS is configured to external equipment, this
It is very important.In addition, these cannot all allow to have power-off for high-end communication apparatus and the high-end network equipment
It happens；The especially heart in a network, is to run using server as pith, such UPS, which just seems, more to be aggravated
It has wanted.Either common computer or expensive computer, with after a period of time, the file data in computer will seem
It is very valuable, so in order to prevent unexpected disappear of file data and configuring a uninterruptible power supply is necessary.
Existing UPS mostly uses greatly dsp controller as control chip, to control other function module, DSP control
Device processed is TMS320F28335 chip, and wherein dsp controller needs to sample voltage or current, existing sample mode
The AD carried in dsp controller is mostly used to sample to realize greatly, the sample precision of the included AD sampling of the chip is not high, thus
Influence the sampling precision of entire UPS.
Summary of the invention
Technical problem solved by the present invention is the sample precision of existing UPS is not high.
The solution that the present invention solves its technical problem is: a kind of sampling module for UPS, comprising: current sample
The output end of circuit and voltage sampling circuit, the current sampling circuit and voltage sampling circuit respectively with dsp controller
One, the 2nd A/D interface connects, and the current sampling circuit includes: the closed-loop Hall current sensor of concatenation, amplifying circuit, partially
Circuits, first voltage follower, the output end of the first voltage follower are connect with the first A/D interface, the electricity
Pressure sample circuit includes: the Hall voltage sensor of concatenation, inverting amplifier, second voltage follower, voltage regulator circuit, described steady
The output end of volt circuit is connect with the 2nd A/D interface.
Further, the amplifying circuit includes: resistance R91, R92, capacitor C91, operational amplifier U91, the biased electrical
Road includes: resistance R93, and capacitor C92, the first voltage follower includes: operational amplifier U92, one end of the resistance R91
It is connect with the non-inverting input terminal of operational amplifier U91, the other end of the resistance R91 connects over the ground, the operational amplifier U91
Inverting input terminal respectively with the output end of closed-loop Hall current sensor, one end of resistance R92, capacitor C91 one end connection,
The output end of the operational amplifier U91 other end with resistance R92 respectively, the other end of capacitor C91, one end of capacitor C92,
One end of resistance R93, the non-inverting input terminal connection of operational amplifier U92, the other end of the capacitor C92 connects over the ground, described
Other end connection+1.65V the power supply of resistance R93, the inverting input terminal of the operational amplifier U92 are connect with its output end,
The output end of operational amplifier U92 is connect with the first A/D interface；
The inverting amplifier includes: resistance R94, R95, R96, operational amplifier U93, the second voltage follower packet
Include: operational amplifier U94, the voltage regulator circuit include: capacitor C93, one end of voltage-stabiliser tube D91, the resistance R94 and Hall electricity
The output end of pressure sensor connects, and the other end of resistance R94 one end with resistance R95 respectively, operational amplifier U93's is anti-
The connection of phase input terminal, one end of the resistance R96 are connect with the non-inverting input terminal of operational amplifier U93, and the resistance R96's is another
One end connects over the ground, and the output end of the operational amplifier U93 other end with resistance R95 respectively, operational amplifier U94's is same
The connection of phase input terminal, the inverting input terminal of the operational amplifier U94 are connect with its output end, the operational amplifier U94
Output end one end with capacitor C93 respectively, the cathode of voltage-stabiliser tube D91, the connection of the 2nd A/D interface, the capacitor C93's is another
End, the anode of voltage-stabiliser tube D91 connect over the ground respectively.
Further, the model LA-50P sensor of the closed-loop Hall current sensor.
Further, the Hall voltage sensor model VSM500D.
The beneficial effects of the present invention are: the invention utilizes current sampling circuit and voltage sampling circuit, while to city
The electric current and voltage of electricity are sampled, and before carrying out AD sampling using dsp controller, are amplified using amplifying circuit and reverse phase
Circuit carries out preliminary Linear Amplifer and calculates, so that sampling is more accurate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the circuit connection block diagram of the sampling module of the invention；
Fig. 2 is the circuit connection diagram of sampling module.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connection/connection relationships not singly refer to that component directly connects, and referring to can be added deduct according to specific implementation situation by adding
Few couple auxiliary, Lai Zucheng more preferably coupling structure.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1, with reference to Fig. 1 and Fig. 2, a kind of sampling module for UPS, comprising: current sampling circuit 8a and voltage
The output end of sample circuit 8b, the current sampling circuit 8a and voltage sampling circuit 8b respectively with the first of dsp controller 4,
2nd A/D interface AD1, AD2 connection, the current sampling circuit 8a include: the closed-loop Hall current sensor 81 of concatenation, amplification
Circuit 82, biasing circuit 83, first voltage follower 84, the output end of the first voltage follower 84 and the first A/D
Interface AD1 connection, the voltage sampling circuit 8b include: the Hall voltage sensor 85 of concatenation, the 86, second electricity of inverting amplifier
Follower 87, voltage regulator circuit 88 are pressed, the output end of the voltage regulator circuit 88 is connect with the 2nd A/D interface AD2.
The amplifying circuit 82 includes: resistance R91, R92, capacitor C91, operational amplifier U91, and the biasing circuit 83 wraps
Include: resistance R93, capacitor C92, the first voltage follower 84 includes: operational amplifier U92, one end of the resistance R91 with
The non-inverting input terminal of operational amplifier U91 connects, and the other end of the resistance R91 connects over the ground, the operational amplifier U91's
The output end with closed-loop Hall current sensor 81, one end of one end of resistance R92, capacitor C91 connect inverting input terminal respectively,
The output end of the operational amplifier U91 other end with resistance R92 respectively, the other end of capacitor C91, one end of capacitor C92,
One end of resistance R93, the non-inverting input terminal connection of operational amplifier U92, the other end of the capacitor C92 connects over the ground, described
Other end connection+1.65V the power supply of resistance R93, the inverting input terminal of the operational amplifier U92 are connect with its output end,
The output end of operational amplifier U92 is connect with the first A/D interface AD1；
The inverting amplifier 86 includes: resistance R94, R95, R96, operational amplifier U93, the second voltage follower
87 include: operational amplifier U94, and the voltage regulator circuit 88 includes: capacitor C93, voltage-stabiliser tube D91, one end of the resistance R94 with
The output end of Hall voltage sensor 85 connects, the other end of resistance R94 one end with resistance R95 respectively, operation amplifier
The inverting input terminal of device U93 connects, and one end of the resistance R96 is connect with the non-inverting input terminal of operational amplifier U93, the electricity
The other end of resistance R96 connects over the ground, the output end of the operational amplifier U93 other end with resistance R95 respectively, operation amplifier
The non-inverting input terminal of device U94 connects, and the inverting input terminal of the operational amplifier U94 is connect with its output end, the operation
One end with capacitor C93, the cathode of voltage-stabiliser tube D91, the 2nd A/D interface AD2 connection are described respectively for the output end of amplifier U94
The other end of capacitor C93, the anode of voltage-stabiliser tube D91 connect over the ground respectively.
When the work of the circuit of the invention, the closed-loop Hall current sensor 81 and Hall voltage sensor 85
Input terminal is separately connected alternating current.
The current signal of alternating current is converted into voltage signal by closed-loop Hall current sensor 81, as optimization, the closed loop
Hall current sensor 81 can achieve the current effective value of 50A using the LA-50P sensor of lime company research and development, maximum
There is the current value of ± 80A.The signal that closed-loop Hall current sensor 81 exports is input in amplifying circuit 82, the amplifying circuit
82 is by resistance R91, R92, the reverse phase scaling circuit 82 of capacitor C91, operational amplifier U91 composition, and the circuit is by signal
Linear Amplifer calculating is carried out to carry out because the first A/D interface AD1 of dsp controller 4 can not sample negative value
After Linear Amplifer calculates, then+1.65V a DC bias circuit 83 is added, so that negative value becomes just, finally by first
The output end of voltage follower 84 is sent in the first A/D interface AD1, realizes the acquisition of electric current.
The voltage of alternating current passes through Hall voltage sensor 85, and the Hall voltage sensor 85 turns the voltage signal of alternating current
Become current signal, as optimization, the Hall voltage sensor 85 is the VSM500D of Jiangsu camellia Sensitive Object research and development,
Specified detection voltage is 500V, and the electric current of measurement range 0~± 750V, the output of Hall voltage sensor 85 passes through inverting amplifier
86, wherein generating voltage signal by resistance R94, which carries out Linear Amplifer calculating by operational amplifier U93, then
It is input in the 2nd A/D interface AD2 of dsp controller 4 by second voltage follower 87, thus realize voltage sample, in order to
So that signal is more stable, voltage regulator circuit 88 is connected in the output end of second voltage follower 87.
The invention utilizes current sampling circuit 8a and voltage sampling circuit 8b, at the same electric current to alternating current and voltage into
Row sampling, and before being sampled using dsp controller 4, it is carried out tentatively using amplifying circuit 82 and see-saw circuit 82
Linear Amplifer calculate so that dsp controller 4 sample it is more accurate.Sampling essence by test, after increasing this sampling module
Degree increases 20% than the sampling precision merely using dsp controller 4.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (4)
1. a kind of sampling module for UPS characterized by comprising current sampling circuit and voltage sampling circuit, the electricity
The output end of stream sample circuit and voltage sampling circuit is connect with the first, second A/D interface of dsp controller respectively, the electricity
Stream sample circuit includes: the closed-loop Hall current sensor of concatenation, amplifying circuit, biasing circuit, first voltage follower, described
The output end of first voltage follower is connect with the first A/D interface, and the voltage sampling circuit includes: the Hall electricity of concatenation
Pressure sensor, inverting amplifier, second voltage follower, voltage regulator circuit, the output end of the voltage regulator circuit and the 2nd A/D
Interface connection.
2. a kind of sampling module for UPS according to claim 1, it is characterised in that:
The amplifying circuit includes: resistance R91, R92, and capacitor C91, operational amplifier U91, the biasing circuit includes: resistance
R93, capacitor C92, the first voltage follower includes: operational amplifier U92, one end of the resistance R91 and operation amplifier
The non-inverting input terminal of device U91 connects, and the other end of the resistance R91 connects over the ground, the anti-phase input of the operational amplifier U91
End is respectively with the output end of closed-loop Hall current sensor, and one end of resistance R92, one end connection of capacitor C91, the operation puts
The output end of the big device U91 other end with resistance R92 respectively, the other end of capacitor C91, one end of capacitor C92, resistance R93's
One end, the non-inverting input terminal connection of operational amplifier U92, the other end of the capacitor C92 connect over the ground, the resistance R93's
Other end connection+1.65V power supply, the inverting input terminal of the operational amplifier U92 are connect with its output end, operational amplifier
The output end of U92 is connect with the first A/D interface；
The inverting amplifier includes: resistance R94, R95, R96, operational amplifier U93, and the second voltage follower includes:
Operational amplifier U94, the voltage regulator circuit include: capacitor C93, voltage-stabiliser tube D91, one end of the resistance R94 and Hall voltage
The output end of sensor connects, the other end of resistance R94 one end with resistance R95 respectively, the reverse phase of operational amplifier U93
Input terminal connection, one end of the resistance R96 are connect with the non-inverting input terminal of operational amplifier U93, and the resistance R96's is another
End connects over the ground, the output end of the operational amplifier U93 other end with resistance R95 respectively, the same phase of operational amplifier U94
Input terminal connection, the inverting input terminal of the operational amplifier U94 are connect with its output end, the operational amplifier U94's
One end with capacitor C93, the cathode of voltage-stabiliser tube D91, the 2nd A/D interface connect output end respectively, and the capacitor C93's is another
End, the anode of voltage-stabiliser tube D91 connect over the ground respectively.
3. a kind of sampling module for UPS according to claim 1 or 2, which is characterized in that the closed loop Hall current
The model LA-50P sensor of sensor.
4. a kind of sampling module for UPS according to claim 3, which is characterized in that the Hall voltage sensor
Model VSM500D.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305713.7A CN110361671A (en) | 2018-04-08 | 2018-04-08 | A kind of sampling module for UPS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305713.7A CN110361671A (en) | 2018-04-08 | 2018-04-08 | A kind of sampling module for UPS |
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| CN110361671A true CN110361671A (en) | 2019-10-22 |
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| CN201810305713.7A Pending CN110361671A (en) | 2018-04-08 | 2018-04-08 | A kind of sampling module for UPS |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114403885A (en) * | 2022-01-10 | 2022-04-29 | 武汉衷华脑机融合科技发展有限公司 | Neural interface circuit of two-way signal transmission |
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| US20060015274A1 (en) * | 2004-07-16 | 2006-01-19 | Cellex Power Products, Inc. | Digital input current control for switch mode power supplies |
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| CN204556721U (en) * | 2015-04-30 | 2015-08-12 | 西安科技大学 | A kind of harmonic detecting signal acquisition circuit |
| CN107121587A (en) * | 2017-06-26 | 2017-09-01 | 佛山科学技术学院 | Peak value and excessively peak moment tracing detection circuit |
| CN206649076U (en) * | 2017-04-19 | 2017-11-17 | 西安科技大学 | A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer |
| CN206671826U (en) * | 2017-03-29 | 2017-11-24 | 哈尔滨理工大学 | Brshless DC motor AC signal real-time sampling system |
| CN207992770U (en) * | 2018-04-08 | 2018-10-19 | 佛山科学技术学院 | A kind of sampling module |
-
2018
- 2018-04-08 CN CN201810305713.7A patent/CN110361671A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060015274A1 (en) * | 2004-07-16 | 2006-01-19 | Cellex Power Products, Inc. | Digital input current control for switch mode power supplies |
| CN103454519A (en) * | 2013-07-31 | 2013-12-18 | 广东电网公司电力科学研究院 | System and method for calculation/liquid crystal display of electrical parameters of active power filter |
| CN204556721U (en) * | 2015-04-30 | 2015-08-12 | 西安科技大学 | A kind of harmonic detecting signal acquisition circuit |
| CN206671826U (en) * | 2017-03-29 | 2017-11-24 | 哈尔滨理工大学 | Brshless DC motor AC signal real-time sampling system |
| CN206649076U (en) * | 2017-04-19 | 2017-11-17 | 西安科技大学 | A kind of loaded capacity-regulated control data acquisition circuit of middle pressure transformer |
| CN107121587A (en) * | 2017-06-26 | 2017-09-01 | 佛山科学技术学院 | Peak value and excessively peak moment tracing detection circuit |
| CN207992770U (en) * | 2018-04-08 | 2018-10-19 | 佛山科学技术学院 | A kind of sampling module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114403885A (en) * | 2022-01-10 | 2022-04-29 | 武汉衷华脑机融合科技发展有限公司 | Neural interface circuit of two-way signal transmission |
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