CN204731328U - A kind of acquiring electric energy information device - Google Patents
A kind of acquiring electric energy information device Download PDFInfo
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- CN204731328U CN204731328U CN201520287535.1U CN201520287535U CN204731328U CN 204731328 U CN204731328 U CN 204731328U CN 201520287535 U CN201520287535 U CN 201520287535U CN 204731328 U CN204731328 U CN 204731328U
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- operational amplifier
- electric energy
- converter
- information device
- pass filter
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- 230000005669 field effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052744 lithium Inorganic materials 0.000 claims description 7
- 238000001914 filtration Methods 0.000 abstract description 19
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013144 data compression Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of acquiring electric energy information device, comprising: data acquisition module, the first operational amplifier, A/D converter, single-chip microcomputer, display screen, power module; Electric energy to be measured amplifies by being transported to described first operational amplifier after described data collecting module collected, delivery of electrical energy to be measured after amplification converts digital signal to A/D converter and is transferred to single-chip microcomputer, and described single-chip microcomputer processes the digital signal received and flows to described display screen and shows.The active band-pass filter that filtering circuit employing Chebyshev's Hi-pass filter of this acquiring electric energy information device and Butterworth lowpass filters are composed in series, field effect transistor operational amplifier for current signal and the bipolar transistor operational amplifier for voltage signal are set in discharge circuit, there is the humorous wave interference of filtering multiband, load capacity is strong, power factor (PF) is high, the advantage of further raising current signal and voltage signal efficiency in amplifier.
Description
Technical field
The utility model relates to a kind of data collector, particularly a kind of acquiring electric energy information device.
Background technology
In general, energy information comprises quality of voltage, current quality, power supply quality and power quality, this just needs to go to gather energy information data by acquiring electric energy information device, then processes the energy information data collected and analyzes, thus can judge the quality of power supply.
In acquiring electric energy information process, first power network signal falls stream by transducer step-down, and afterwards again through electromagnetic interface filter, the electromagnetic noise of more than filtering 1MHz, now can think the external noise do not existed in signal higher than 1MHz approx.After the preposition difference operational amplifying circuit and anti-aliasing low-pass filter circuit of acquiring electric energy information device, namely signal enters A/D and carries out data sampling.The affect main manifestations of noise on signal that in this process, discharge circuit produces is amplitude noise, and the output voltage noise of discharge circuit output terminal and output current noise can have an impact to the accuracy of data sampling afterwards, speed, precision, degree of stability and data compression.
Modulate circuit kind in acquiring electric energy information device is very many, and the filtering part in modulate circuit adopts the process of passive filtering mode usually, but filtering frequency range can change with the change of load; The high pass active power filtering mode of single power supply, cannot carry out filtering to negative voltage signal.
Discharge circuit in acquiring electric energy information device, signal source is different, and the input resistance of discharge circuit is different with the output impedance contrast of signal source; When signal source is voltage signal, the input resistance of discharge circuit is larger than the output impedance of voltage signal source; When signal source is current signal, the input resistance of discharge circuit is less than the output impedance in current signal source.General discharge circuit uses one species operational amplifier at present, and the power of the signal of signal source in operational amplification circuit will certainly be caused to diminish.
Utility model content
For above-mentioned technical matters, a kind of acquiring electric energy information device disclosed in the utility model, solve that filtering frequency range in prior art cannot carry out filtering to negative voltage signal with the high pass active power filtering mode of load change, single power supply, unlike signal source adopts one species discharge circuit can cause the problems such as amplifier power diminishes, have can filtering multiband humorous wave interference, load capacity is strong, power factor (PF) is high, the power advantages of higher of energy information data in discharge circuit.
The technical scheme that the utility model provides is: a kind of acquiring electric energy information device, comprising:
Data acquisition module, the first operational amplifier, A/D converter, single-chip microcomputer, display screen, power module; Electric energy to be measured amplifies by being transported to described first operational amplifier after described data collecting module collected, delivery of electrical energy described to be measured after amplification converts digital signal to and is transferred to single-chip microcomputer to described A/D converter, described single-chip microcomputer processes the described digital signal received and flows to described display screen and shows, and described power module is connected respectively to above each module for power supply; Wherein, described data acquisition module comprises signal transducer, the second operational amplifier, active band-pass filter, described signal transducer comprises voltage sensor and current sensor, and described active band-pass filter comprises Chebyshev's Hi-pass filter and the Butterworth lowpass filters of series connection; Described first operational amplifier and described second operational amplifier include field effect transistor operational amplifier and bipolar transistor operational amplifier; Described electric energy to be measured is by described current sensor output current signal, and the described field effect transistor operational amplifier of described second operational amplifier receives described current signal and is transported to described active band-pass filter; Described electric energy to be measured is by described voltage sensor output voltage signal, and the described bipolar transistor operational amplifier of described second operational amplifier receives described voltage signal and is transported to described active band-pass filter.。
Preferably, described power module comprises AC/DC converter, DC/DC converter, the input end of described AC/DC converter is connected with described electric energy to be measured, output terminal is connected with described DC/DC converter, and described DC/DC converter is connected with described first operational amplifier, described second operational amplifier, A/D converter, described single-chip microcomputer, described display screen respectively.
Preferably, described power module also comprises lithium battery group and electric power selection apparatus, and output terminal, the described lithium battery group of described AC/DC converter are all connected with described DC/DC converter by described electric power selection apparatus.
Preferably, described data acquisition module also comprises phaselocked loop, and described phaselocked loop one end is connected to the output terminal of described active band-pass filter, the other end is connected to described A/D converter.
Preferably, also comprise ethernet module, described ethernet module one end is connected to single-chip microcomputer, the other end is connected to network by fieldbus.
Preferably, described fieldbus is CAN.
The utility model compared to the beneficial effect of prior art is, a kind of acquiring electric energy information device provided, the active band-pass filter that its filtering circuit part adopts Chebyshev's Hi-pass filter and Butterworth lowpass filters to be composed in series, can filtering multiband humorous wave interference, strengthen load capacity, improve power factor (PF); And, according to the difference in collection signal source, be provided with the field effect transistor operational amplifier for current signal and the bipolar transistor operational amplifier for voltage signal in discharge circuit, further increase current signal and the efficiency of voltage signal in discharge circuit.
Accompanying drawing explanation
Fig. 1 is acquiring electric energy information apparatus structure schematic diagram of the present utility model;
Fig. 2 is the data acquisition module structural representation of acquiring electric energy information device of the present utility model;
Fig. 3 is the power module structure schematic diagram of acquiring electric energy information device of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to instructions word to make those skilled in the art.
Fig. 1 is acquiring electric energy information apparatus structure schematic diagram of the present utility model, and as shown in Figure 1, the acquiring electric energy information device that the utility model provides comprises data acquisition module 100, first operational amplifier 200, A/D converter 300, single-chip microcomputer 400, display screen 500, power module 600; Electric energy to be measured is transported to the first operational amplifier 200 after being gathered by data acquisition module 100 and amplifies, the noise that the thermonoise of filtering simultaneously, shot noise, flicker noise (low-frequency noise or 1/f noise) and resistance, capacitance parameter stability and ambient temperature effect produce; Electric signal transmission to be measured after amplification converts digital signal to A/D converter 300 and is transferred to single-chip microcomputer 400, and single-chip microcomputer 400 processes the digital signal received and flows to display screen 500 and shows.Power module 600 is all connected with above-mentioned modules, for power supply.
Fig. 2 is the data acquisition module structural representation of acquiring electric energy information device of the present utility model, and as shown in Figure 2, data acquisition module comprises signal transducer 101, second operational amplifier 102, active band-pass filter 103.Wherein, signal transducer 101 comprises voltage sensor and current sensor, can gather voltage signal and current signal according to different signal sources.Active band-pass filter 102 comprises Chebyshev's Hi-pass filter and the Butterworth lowpass filters of series connection, in the prior art that compares, filtering frequency range cannot carry out the problems such as filtering to negative voltage signal with the high pass active power filtering mode of load change, single power supply, Chebyshev's Hi-pass filter of series connection and Butterworth lowpass filters composition active band-pass filter 103 can successfully filtering multiband humorous wave interference, strengthen load capacity, improve power factor (PF).Signal source is different, and the input resistance of discharge circuit is different with the output impedance contrast of signal source; When signal source is voltage signal, the input resistance of discharge circuit is larger than the output impedance of voltage signal source; When signal source is current signal, the input resistance of discharge circuit is less than the output impedance in current signal source; If discharge circuit uses one species operational amplifier, be certain to cause the power of the signal of signal source in operational amplification circuit to diminish.In the present embodiment, the first operational amplifier 200 and the second operational amplifier 102 include field effect transistor operational amplifier and bipolar transistor operational amplifier, electric energy to be measured is by current sensor output current signal, and the field effect transistor operational amplifier of the second operational amplifier 102 receives this current signal and is transported to active band-pass filter 103; Electric energy to be measured is by voltage sensor output voltage signal, and the bipolar transistor operational amplifier of the second operational amplifier 102 receives this voltage signal and is transported to active band-pass filter; By selecting different types of operational amplifier for unlike signal source, further increase current signal and the efficiency of voltage signal in discharge circuit.
Fig. 3 is the power module structure schematic diagram of acquiring electric energy information device of the present utility model, power module 600 comprises AC/DC converter 601, DC/DC converter 602, the input end of AC/DC converter 601 is connected with electric energy to be measured, output terminal is connected with DC/DC converter 602, and DC/DC converter 602 is connected with the first operational amplifier 200, second operational amplifier 102, A/D converter 300, single-chip microcomputer 400, display screen 500 respectively.Power module 600 converts power supply needed for the first operational amplifier 200, second operational amplifier 102, A/D converter 300, single-chip microcomputer 400, display screen 500 each several part to after electric energy to be measured being carried out successively to AC/DC conversion, DC/DC conversion.
As another kind of embodiment of the present utility model, power module 600 also comprises the output terminal of lithium battery group 603 and electric power selection apparatus 604, AC/DC converter 601, lithium battery group 603 is all connected with DC/DC converter 602 by electric power selection apparatus 604.By increasing lithium battery group 603 and electric power selection apparatus 604, can select according to the power supply mode of field condition to acquiring electric energy information device.
As another kind of embodiment of the present utility model, data acquisition module 100 also comprises phaselocked loop 700, and phaselocked loop 700 one end is connected to the output terminal of the active band-pass filter 103 of data acquisition module 100, the other end is connected to A/D converter 300.
As another kind of embodiment of the present utility model, acquiring electric energy information device also comprises ethernet module 800, and ethernet module 800 one end is connected to single-chip microcomputer 400, the other end is connected to network by fieldbus.The digital signal changed through A/D converter 300 is sent to ethernet module 800 by single-chip microcomputer 400, and the digital signal collected is sent network by fieldbus by ethernet module 800, is convenient to share, monitors in real time.Fieldbus has multiple bus, the preferred CAN of the present embodiment.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (6)
1. an acquiring electric energy information device, is characterized in that, comprising:
Data acquisition module, the first operational amplifier, A/D converter, single-chip microcomputer, display screen, power module; Electric energy to be measured amplifies by being transported to described first operational amplifier after described data collecting module collected, delivery of electrical energy described to be measured after amplification converts digital signal to and is transferred to single-chip microcomputer to described A/D converter, described single-chip microcomputer processes the described digital signal received and flows to described display screen and shows, and described power module is connected respectively to above each module for power supply;
Wherein, described data acquisition module comprises signal transducer, the second operational amplifier, active band-pass filter, described signal transducer comprises voltage sensor and current sensor, and described active band-pass filter comprises Chebyshev's Hi-pass filter and the Butterworth lowpass filters of series connection; Described first operational amplifier and described second operational amplifier include field effect transistor operational amplifier and bipolar transistor operational amplifier; Described electric energy to be measured is by described current sensor output current signal, and the described field effect transistor operational amplifier of described second operational amplifier receives described current signal and is transported to described active band-pass filter; Described electric energy to be measured is by described voltage sensor output voltage signal, and the described bipolar transistor operational amplifier of described second operational amplifier receives described voltage signal and is transported to described active band-pass filter.
2. a kind of acquiring electric energy information device as claimed in claim 1, it is characterized in that, described power module comprises AC/DC converter, DC/DC converter, the input end of described AC/DC converter is connected with described electric energy to be measured, output terminal is connected with described DC/DC converter, and described DC/DC converter is connected with described first operational amplifier, described second operational amplifier, A/D converter, described single-chip microcomputer, described display screen respectively.
3. a kind of acquiring electric energy information device as claimed in claim 2, it is characterized in that, described power module also comprises lithium battery group and electric power selection apparatus, and output terminal, the described lithium battery group of described AC/DC converter are all connected with described DC/DC converter by described electric power selection apparatus.
4. a kind of acquiring electric energy information device as described in any one of claim 1-3, it is characterized in that, described data acquisition module also comprises phaselocked loop, and described phaselocked loop one end is connected to the output terminal of described active band-pass filter, the other end is connected to described A/D converter.
5. a kind of acquiring electric energy information device as claimed in claim 4, is characterized in that, also comprise ethernet module, and described ethernet module one end is connected to single-chip microcomputer, the other end is connected to network by fieldbus.
6. a kind of acquiring electric energy information device as claimed in claim 5, it is characterized in that, described fieldbus is CAN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520287535.1U CN204731328U (en) | 2015-05-06 | 2015-05-06 | A kind of acquiring electric energy information device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520287535.1U CN204731328U (en) | 2015-05-06 | 2015-05-06 | A kind of acquiring electric energy information device |
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| CN204731328U true CN204731328U (en) | 2015-10-28 |
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| CN201520287535.1U Active CN204731328U (en) | 2015-05-06 | 2015-05-06 | A kind of acquiring electric energy information device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257266A (en) * | 2020-03-27 | 2020-06-09 | 中国科学院合肥物质科学研究院 | Fourier transform infrared spectrum processing device and method |
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2015
- 2015-05-06 CN CN201520287535.1U patent/CN204731328U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257266A (en) * | 2020-03-27 | 2020-06-09 | 中国科学院合肥物质科学研究院 | Fourier transform infrared spectrum processing device and method |
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