CN209486284U - A kind of power source - Google Patents
A kind of power source Download PDFInfo
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- CN209486284U CN209486284U CN201920046706.XU CN201920046706U CN209486284U CN 209486284 U CN209486284 U CN 209486284U CN 201920046706 U CN201920046706 U CN 201920046706U CN 209486284 U CN209486284 U CN 209486284U
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Abstract
The utility model discloses a kind of power source, including input equipment, controller, first waveform generator and the second waveform generator, the first digital analog converter and the second digital analog converter, the first power amplification circuit and the second power amplification circuit, booster, current lifting device, voltage feedback circuit and current feedback circuit；Controller is connect with the input terminal of first waveform generator, the second waveform generator, the first digital analog converter, the second digital analog converter respectively；First waveform generator is electrically connected by the first power amplification circuit with booster, and the output voltage of booster is acquired by voltage feedback circuit and feeds back to first integrator；Second waveform generator is electrically connected by the second power amplification circuit with current lifting device, and the output electric current of current lifting device is acquired by current feedback circuit and feeds back to second integral device；The utility model is electrically isolated completely to by voltage channel and current channel and independent output, avoids the interference between two paths of signals, has high-precision, high stability.
Description
[technical field]
The present invention relates to electrical testing fields, specifically design a kind of power source.
[background technique]
Power meter is one of common measuring device in electrical testing, and the test accuracy of power meter is for accurate electricity
It measures extremely important.Power source is optimized to the calibration and performance of power meter as a kind of essential electrical devices
It closes important, is also widely paid attention to.Tradition exports various standard source letters in power source design, to ensure that power source is stablized
Number, the method for feedback is generallyd use to adjust, this improves the stability of power source, but traditional power source to a certain extent
In design it is general between electric current source follower circuit and voltage source follower circuit due to signal interference problem, lead to output voltage and electricity
There is distortion to a certain extent with voltage standard, current standard in stream.If publication No. is one kind disclosed in CN106787783A
Wide Band Power source system, although taking feedback regulation to potential circuit and power current, to voltage power amplifier and
Current power amplifier uses an amplifier power supply jointly, so that there are the feelings of signal interference in potential circuit and current circuit
Condition influences the accuracy of outputting standard source signal.
[summary of the invention]
In view of the above deficiencies, the application utility model is directed to power source, by the way that potential circuit and current circuit is complete
Full electrical isolation avoids the signal interference between voltage signal and current signal so that voltage, electric current independently export,
It improves power source output voltage and exports the accuracy of electric current.
The utility model can be achieved through the following technical solutions, a kind of power source, which is characterized in that be set including input
Standby, controller, first waveform generator and the second waveform generator, the first digital analog converter and the second digital analog converter, first
Power amplification circuit and the second power amplification circuit, booster, current lifting device, first integrator and second integral device, Voltage Feedback
Circuit and current feedback circuit, in which:
The input equipment is connected to the input terminal of controller；
The controller is counted with first waveform generator, the second waveform generator, the first digital analog converter, second respectively
The input terminal of mode converter connects；
The first waveform generator is electrically connected by the first power amplification circuit with booster, and the output electricity of booster
Pressure is acquired by voltage feedback circuit and feeds back to first integrator；
Second waveform generator is electrically connected by the second power amplification circuit with current lifting device, and the output electricity of current lifting device
Stream is acquired by current feedback circuit and feeds back to second integral device；
First digital analog converter is connect with first integrator, and the output end of first integrator and first waveform occur
Device connection；
Second digital analog converter is connect with second integral device, and the output end of second integral device and the second waveform occur
Device connection.
In utility model device, input signal is sent in controller by the input equipment, and then controller pair
First waveform generator, the second waveform generator, the first digital analog converter, the second digital analog converter and first integrator,
Two integrators are controlled, so that exporting corresponding voltage waveform and current waveform in voltage channel and current channel；Into one
Step, in voltage channel, the output signal of first waveform generator is electrically connected by the first power amplification circuit and booster realization
Connect, voltage signal required for the booster exports, at the same the output voltage signal of booster by voltage feedback circuit into
Sampled signal is simultaneously transmitted to first integrator by row sampling, and then the voltage output of the first digital analog converter is adjusted by controller
Waveform；Similarly, in current channel, the output signal of the second waveform generator is real by the second power amplifier and current lifting device
It is now electrically connected, current signal required for the current lifting device exports, while the output current signal of current lifting device is by current feedback electricity
Road carries out sampling and sampled signal is transmitted to second integral device, and then the electric current of the second digital analog converter is adjusted by controller
Output waveform；The phase of current output waveform and output voltage wave can also be adjusted in controller in the present apparatus.
Compared with prior art, the utility model takes complete electricity to voltage follower circuit and current output circuit
Air bound from, and voltage follower circuit and electric current output electric current using independent feedback regulation design, power greatly improved
The stability in source and the precision of output signal are significant for the calibration of power meter equipment.
The utility model can be limited further by the following technical programs:
It further include the first isolating amplifier circuit and the second isolating amplifier circuit as a kind of technical solution, and described
One waveform generator is connected to the first power amplification circuit after passing through the first isolating amplifier circuit；Second waveform generator
By being connected to the second power amplification circuit after the second isolating amplifier circuit.In the present solution, the electricity of the first digital analog converter output
Corrugating is connected to the first power amplification circuit after passing through the first isolating amplifier circuit, reduces the signal interference on voltage channel
Problem；Similarly, the voltage waveform of the second digital analog converter output is put by being connected to the second power after the second isolating amplifier circuit
Big circuit reduces the signal interference problem on current channel.
It further include overcurrent warning circuit as a kind of technical solution, wherein the output of the first power amplification electricity circuit
End is connect with overcurrent warning circuit, and the overcurrent warning circuit is connected to the input terminal of controller；Overcurrent alarm electricity in the program
The design on road is intended to judge the over-current phenomenon avoidance being likely to occur in circuit.
It further include alarm as a kind of embodiment of above scheme, the alarm is connect with controller, and by
The unlatching of controller control alarm；Whether the controller goes out according to the feedback signal of overcurrent warning circuit in circuit
Existing over-current phenomenon avoidance judged, if there is overcurrent, then alarm for opening；Otherwise it is no it.
As a kind of technical solution, the input equipment is keyboard, touch screen or host computer.Specifically, input is set
Standby is the human-computer interaction devices such as keyboard, touch screen or host computer, and the input signal of controller is transmitted to controller, and then realizes
Human-computer interaction.
As a kind of technical solution, the controller is ARM single-chip microcontroller or other devices having data processing function
Or chip.
As a kind of technical solution, the Voltage Feedback electric current is made of AC to DC converter circuit and isolation circuit, institute
State booster output pass sequentially through AC to DC converter circuit and isolation circuit after be electrically connected with first integrator.
As a kind of technical solution, the current feedback circuit turns potential circuit and friendship by current transformer, electric current
Circulate DC circuit composition, the output of the current lifting device passes sequentially through current transformer, electric current turn potential circuit with exchange turn directly
It is electrically connected after current circuit with second integral device.
As a kind of technical solution, the first waveform generator includes the first digital frequency synthesizer DDS and first
Multiplier, and the output end of the output end of the first integrator and the first digital frequency synthesizer DDS are connected to first and multiply
Musical instruments used in a Buddhist or Taoist mass, the output end of first multiplier are connected to the input terminal of the first isolating amplifier circuit or the first power amplification electricity.Institute
The controller stated directly controls the output waveform and control the first digital analog converter setting of the first digital frequency synthesizer DDS
Voltage reference value, and then by making multiplying to output waveform and voltage reference value, realize the output of voltage waveform；
As a kind of technical solution, second waveform generator includes the second digital frequency synthesizer DDS and second
Multiplier, and the output end of the output end of the second integral device and the second digital frequency synthesizer DDS are connected to second and multiply
The output end of musical instruments used in a Buddhist or Taoist mass, first multiplier is connected to the input terminal of the second isolating amplifier circuit or the second power amplification circuit.
The controller directly controls the output waveform of the second digital frequency synthesizer DDS and the second digital analog converter of control is set
A reference value is set, and then by making multiplying to output waveform and a reference value, realizes the output of current waveform.
As a kind of technical solution, the first waveform generator and the second waveform generator are digital analog converter.
It further include FPGA control chip as a kind of technical solution, the controller is controlled by FPGA control chip
The output waveform of first waveform generator and the second waveform generator.
[Detailed description of the invention]
Attached drawing 1 is utility model diagram；
Attached drawing 2 is utility model diagram in embodiment 1；
Attached drawing 3 is utility model diagram in embodiment 2.
[specific embodiment]
Embodiment 1
As shown in Fig. 2, the present embodiment discloses a kind of power source, including input equipment, controller, the first digital analog converter,
Second digital analog converter and first waveform generator and the second waveform generator, wherein first waveform generator includes the first number
Word frequency synthesizer DDS and the first multiplier are constituted, and the second waveform generator includes the second digital frequency synthesizer DDS and second
Multiplier；Input signal is transmitted to controller by the input equipment, and controls first waveform generator respectively by controller
With the output waveform of the second waveform generator, in addition, the controller pass through the first digital analog converter and the second digital analog converter
The a reference value of voltage and current is set, and the output end of further first digital analog converter and the second digital analog converter is respectively with
One integrator is connected with the input terminal of second integral device；The channel being isolated below with regard to voltage and current two is illustrated:
In voltage channel, the output waveform of the first digital frequency synthesizer DDS and the output signal of first integrator are logical
It crosses the first multiplier to be multiplied to obtain the voltage waveform of given amplitude and frequency, further, the output signal of the first multiplier passes through
It is electrically connected after first isolating amplifier circuit and the first power amplification circuit with booster, the output of booster is voltage output
End, at the same time, output voltage are sampled by the voltage feedback circuit being made of AC to DC converter circuit and isolation circuit, and will
Sampled signal is transmitted to the input terminal of first integrator；And then feedback regulation of the realization to output voltage wave；
In current channel, the output waveform of the second digital frequency synthesizer DDS and the output signal of second integral device are logical
It crosses the second multiplier to be multiplied to obtain the current waveform of given amplitude and frequency, further, the output signal of the second multiplier passes through
It is electrically connected after second isolating amplifier circuit and the second power amplification circuit with current lifting device, the output of current lifting device is electric current output
End, at the same time, output electric current pass through the electric current that turns potential circuit by current transformer, electric current and AC to DC converter circuit is constituted
Feed circuit carries out output signal real-time sampling, and sampled signal is transmitted to the input terminal of second integral device；And then realization pair
The feedback regulation of current output waveform；In addition, the input equipment in the present embodiment is touch screen,
Embodiment 2
As shown in figure 3, the present embodiment discloses a kind of power source, including input equipment, controller, fpga chip, the first number
Mode converter, the second digital analog converter and first waveform generator and the second waveform generator, wherein the input equipment
Input signal is transmitted to controller, control and receive input signal and by fpga chip control respectively first waveform generator and
The output waveform of second waveform generator, in addition, the controller is set by the first digital analog converter and the second digital analog converter
Set a reference value of voltage and current, the output end of further first digital analog converter and the second digital analog converter is respectively with first
Integrator is connected with the input terminal of second integral device；The channel being isolated below with regard to voltage and current two is illustrated:
Pass through the first isolating amplifier circuit and the first power amplification in the output waveform of voltage channel, first waveform generator
It is electrically connected after circuit with booster, the output of booster is voltage output end, and at the same time, output voltage by exchange by being turned
The voltage feedback circuit that DC circuit and isolation circuit are constituted samples, and sampled signal is transmitted to the input of first integrator
End；And then feedback regulation of the realization to output voltage wave；
Pass through the second isolating amplifier circuit and the second power amplification in the output waveform of current channel, the second waveform generator
It is electrically connected after circuit with current lifting device, the output of current lifting device is current output terminal, and at the same time, output electric current passes through mutual by electric current
The current feedback circuit progress output signal real-time sampling that sensor, electric current turn potential circuit and AC to DC converter circuit is constituted, and
Sampled signal is transmitted to the input terminal of second integral device；And then feedback regulation of the realization to current output waveform；In addition, this reality
The input equipment applied in example is host computer, and first waveform generator and the second waveform generator are digital analog converter DAC, and
Its voltage and current waveform for exporting specific waveforms and amplitude is directly controlled by controller.
It is emphasized that the above is only presently preferred embodiments of the present invention, not the present invention is made in any form
Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
All of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of power source, which is characterized in that occur including input equipment, controller, first waveform generator and the second waveform
Device, the first digital analog converter and the second digital analog converter, the first power amplification circuit and the second power amplification circuit, booster,
Current lifting device, first integrator and second integral device, voltage feedback circuit and current feedback circuit, in which:
The input equipment is connected to the input terminal of controller；
The controller turns with first waveform generator, the second waveform generator, the first digital analog converter, the second digital-to-analogue respectively
The input terminal of parallel operation connects；
The first waveform generator is electrically connected by the first power amplification circuit with booster, and the output voltage of booster by
Voltage feedback circuit feeds back to the input terminal of first integrator；
Second waveform generator is electrically connected by the second power amplification circuit with current lifting device, and the output electric current of current lifting device by
Current feedback circuit feeds back to the input terminal of second integral device；
First digital analog converter and the input terminal of first integrator connect, and the output end and first waveform of first integrator
Generator connection；
Second digital analog converter is connect with the input terminal of second integral device, and the output end of second integral device and the second waveform
Generator connection.
2. power source as described in claim 1, which is characterized in that further include the first isolating amplifier circuit and the second isolation amplification
Circuit, and the first waveform generator is by being connected to the first power amplification circuit after the first isolating amplifier circuit；It is described
The second waveform generator by being connected to the second power amplification circuit after the second isolating amplifier circuit.
3. power source as claimed in claim 1 or 2, which is characterized in that further include overcurrent warning circuit, wherein first function
The output end that rate amplifies electric circuit is connect with overcurrent warning circuit, and the overcurrent warning circuit is connected to the input terminal of controller.
4. power source as claimed in claim 1 or 2, which is characterized in that the input equipment be keyboard, touch screen or on
Position machine.
5. power source as claimed in claim 1 or 2, which is characterized in that the controller is ARM single-chip microcontroller.
6. power source as claimed in claim 1 or 2, which is characterized in that the voltage feedback circuit turns direct current by exchanging
Road and isolation circuit composition, the output of the booster pass sequentially through after AC to DC converter circuit and isolation circuit with first integral
Device electrical connection.
7. power source as claimed in claim 1 or 2, which is characterized in that the current feedback circuit is by current transformer, electricity
Circulation potential circuit and AC to DC converter circuit composition, the output end of the current lifting device pass sequentially through current transformer, electric current
It is electrically connected after turning potential circuit and AC to DC converter circuit with second integral device.
8. power source as claimed in claim 1 or 2, which is characterized in that the first waveform generator includes the first number
Frequency synthesizer DDS and the first multiplier, and the output end of the first integrator and the first digital frequency synthesizer DDS's is defeated
Outlet is connected to the first multiplier, and the output end of first multiplier is connected to the first isolating amplifier circuit or the first power
Amplify the input terminal of electricity.
9. power source as claimed in claim 8, which is characterized in that second waveform generator includes the second numerical frequency
Synthesizer DDS and the second multiplier, and the output end of the output end of the second integral device and the second digital frequency synthesizer DDS
It is connected to the second multiplier, the output end of first multiplier is connected to the second isolating amplifier circuit or the second power amplification
The input terminal of circuit.
10. power source as claimed in claim 1 or 2, which is characterized in that it further include FPGA control chip, the controller
The output waveform of first waveform generator and the second waveform generator is controlled by FPGA control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920046706.XU CN209486284U (en) | 2019-01-11 | 2019-01-11 | A kind of power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920046706.XU CN209486284U (en) | 2019-01-11 | 2019-01-11 | A kind of power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209486284U true CN209486284U (en) | 2019-10-11 |
Family
ID=68130679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920046706.XU Active CN209486284U (en) | 2019-01-11 | 2019-01-11 | A kind of power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209486284U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009197A (en) * | 2021-02-08 | 2021-06-22 | 中山职业技术学院 | Amplitude-frequency adjustable power source |
| CN114545068A (en) * | 2021-12-22 | 2022-05-27 | 云南电网有限责任公司电力科学研究院 | Portable 10kV three-phase broadband power standard equipment |
| CN114966148A (en) * | 2022-05-24 | 2022-08-30 | 国网山东省电力公司营销服务中心(计量中心) | High-precision three-phase alternating current standard source for digital full-waveform recovery and working method |
-
2019
- 2019-01-11 CN CN201920046706.XU patent/CN209486284U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009197A (en) * | 2021-02-08 | 2021-06-22 | 中山职业技术学院 | Amplitude-frequency adjustable power source |
| CN114545068A (en) * | 2021-12-22 | 2022-05-27 | 云南电网有限责任公司电力科学研究院 | Portable 10kV three-phase broadband power standard equipment |
| CN114966148A (en) * | 2022-05-24 | 2022-08-30 | 国网山东省电力公司营销服务中心(计量中心) | High-precision three-phase alternating current standard source for digital full-waveform recovery and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: EVERFINE PHOTO-E-INFORMATION Co.,Ltd. Assignor: HANGZHOU EVERFINE INSTRUMENT Co.,Ltd. Contract record no.: X2021330000759 Denomination of utility model: A power source Granted publication date: 20191011 License type: Common License Record date: 20211117 |
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| EE01 | Entry into force of recordation of patent licensing contract |