CN104655924A - Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor - Google Patents
Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor Download PDFInfo
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- CN104655924A CN104655924A CN201510055902.XA CN201510055902A CN104655924A CN 104655924 A CN104655924 A CN 104655924A CN 201510055902 A CN201510055902 A CN 201510055902A CN 104655924 A CN104655924 A CN 104655924A
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- mutual inductor
- balance type
- magnetic balance
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Abstract
The invention relates to an electricity digital converter based on a single-chip microcomputer and a magnetic balance type mutual inductor. The converter is connected with a power grid and comprises the magnetic balance type mutual inductor and the single-chip microcomputer chip connected with each other; a single-chip microcomputer module comprises a detection circuit, a processing circuit and an inhibitory signal output circuit which are connected in sequence; an input end of the detection circuit is connected with the magnetic balance type mutual inductor; an output end of the inhibitory signal output circuit is connected with the magnetic balance type mutual inductor; the magnetic balance type mutual inductor is connected with the power grid. Compared with the prior art, the electricity digital converter is reasonable in design and simple in structure, an external AD (analog-digital) conversion device does not need to be added, and the magnetic balance type mutual inductor is directly connected with the single-chip microcomputer control chip; through low power consumption, low cost and powerful processing and control functions of the magnetic balance type mutual inductor and the single-chip microcomputer control chip, the detection precision is improved and the electricity quality is monitored.
Description
Technical field
The present invention relates to a kind of electricity digitizer, especially relate to a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor.
Background technology
Enter the electric era from the mankind, electric flux is as economic, that the clean energy being easy to again to utilize greatly has promoted industrial sector and society's science and technology development.Meet basic people's lives at electric energy, industrial while, people start more to focus on the reliability of electric power supply, security and quality.The bad quality of power supply can damage the electric property of confession, consumer, and its operational efficiency, security and serviceable life all will decline, and causes the electric energy loss of electric system to increase, and industrial production efficiency, product quality decline.Also likely threaten the reliability of relay protection, communicator, become the hidden danger of power system security.Therefore power quality problem concerns the sustainable development of power industry, socioeconomic overall benefit, and the prerequisite solved effectively analyzes its each parameter index and monitor.Meanwhile, the such as microcontroller such as single-chip microcomputer, FPGA, DSP science and technology fast development, makes the quality of power supply be improved in detection, monitoring and analysis etc., and then is conducive to the problem and the rule that find customer power supply, improve the quality of power supply.
Summary of the invention
Object of the present invention is exactly provide a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor improving measuring accuracy to overcome defect that above-mentioned prior art exists.
Object of the present invention can be achieved through the following technical solutions:
A kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor, this converter is connected with electrical network, it is characterized in that, described converter comprises interconnective magnetic balance type mutual inductor and singlechip chip, described one-chip computer module comprises the testing circuit, treatment circuit and the suppression signal output apparatus that connect successively, described testing circuit input end is connected with magnetic balance type mutual inductor, described suppression signal output apparatus output terminal is connected with magnetic balance type mutual inductor, and described magnetic balance type mutual inductor is connected with electrical network.
Described magnetic balance type mutual inductor comprises two, be respectively the first magnetic balance type mutual inductor and the second magnetic balance type mutual inductor, the input end of the first described magnetic balance type mutual inductor is directly connected with electrical network, the input end of the second described magnetic balance type mutual inductor is connected with electrical network by resistance, and the output terminal of two magnetic balance type mutual inductors is all connected with testing circuit.
Described testing circuit comprises current detection circuit and voltage detecting circuit, and described current detection circuit is connected with the first magnetic balance type mutual inductor, and described voltage detecting circuit is connected with the second magnetic balance type mutual inductor.
Each magnetic balance type mutual inductor includes three windings, be respectively the first winding, the second winding and the tertiary winding, the first described winding is connected with electrical network, and the second described winding is connected with testing circuit, and the described tertiary winding is connected with suppression signal output apparatus.
Described treatment circuit, to the process of electric signal, comprises; Calculate electric current, voltage, power and power factor value, and FFT conversion is carried out to the signal gathered, calculate each harmonic content.
Compared with prior art, the present invention is reasonable in design, and structure is simple, without the need to adding peripheral hardware a/d conversion device, by magnetic balance type mutual inductor directly and singlechip control chip interconnect; By the low-power consumption of magnetic balance type mutual inductor and singlechip control chip, low cost and powerful processing capacity and controlling functions, improve accuracy of detection, the monitoring quality of power supply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
Signal voltage in electrical network is all 220V/380V voltage or higher, utilizes existing electronic installation to measure, and more difficultly directly measures, and winding coil induction current can be utilized power network signal to be become the current signal that can survey and be sent in device.The present invention adopts magnetic balance type mutual inductor.Power network signal is linked into the primary coil of magnetic balance type mutual inductor, is linked into singlechip chip by the induction current produced, completes the detection to current signal; After changing mains voltage signal into current signal by series connection resistance R, concrete size can be recorded by a magnetic balance type mutual inductor equally.
As shown in Figure 1, electricity digitizer of the present invention, comprise interconnective magnetic balance type mutual inductor and one-chip computer module chip 3, described singlechip chip 3 comprises the testing circuit, treatment circuit 33 and the suppression signal output apparatus 34 that connect successively, described testing circuit input end and magnetic balance type mutual inductor second winding switching, described suppression signal output apparatus output terminal is connected with the magnetic balance type mutual inductor tertiary winding, and described magnetic balance type mutual inductor is connected with electrical network.
Described magnetic balance type mutual inductor comprises two, be respectively the first magnetic balance type mutual inductor 1 and the second magnetic balance type mutual inductor 2, the input end of the first described magnetic balance type mutual inductor 1 is directly connected with electrical network, the input end of the second described magnetic balance type mutual inductor 2 is connected with electrical network by resistance, and the output terminal of two magnetic balance type mutual inductors is all connected with testing circuit.
Described testing circuit comprises current detection circuit 31 and voltage detecting circuit 32, and described current detection circuit 31 is connected with the first magnetic balance type mutual inductor 1, and described voltage detecting circuit 32 is connected with the second magnetic balance type mutual inductor 2.
Each magnetic balance type mutual inductor includes three windings, be respectively the first winding, the second winding and the tertiary winding, the first described winding is connected with electrical network, and the second described winding is connected with testing circuit, and the described tertiary winding is connected with suppression signal output apparatus.
In Fig. 1, the first magnetic balance type mutual inductor 1 is for current detecting, if the triple coil number of turn is respectively n
10, n
11, n
12; Second magnetic balance type mutual inductor 2 is for voltage detecting, if it establishes triple coil, the number of turn is respectively n
20, n
21, n
22.Second winding of two magnetic balance type mutual inductors is connected with singlechip control chip, detects induction current size i
1, i
2.According to induction current i
1, i
2size, the suppression current signal i that adjustment singlechip chip exports
3, i
4, cancelling out each other in the magnetic field allowing tertiary winding coil produce in magnetism gathering rings and the magnetic field produced of first, second coil, thus makes i
1, i
2be 0.
Utilize chip microcontroller to the acquisition and processing of electric signal, by software programming, sequential control and calculating, transmission process are carried out to links, and calculates the parameter values such as electric current, voltage, active power.Utilization FFT, Hilbert algorithm calculate each harmonic content, reactive power, and then calculate power factor.
Simultaneously it is emphasized that this instructions is chosen and specifically described embodiment, be for explaining principle of the present invention and practical application better, thus, the preferred embodiment of the present invention is illustrative, does not limit this and invents in described embodiment.Obviously, according to the content of this instructions, embodiment can do various change.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (5)
1. the electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor, this converter is connected with electrical network, it is characterized in that, described converter comprises interconnective magnetic balance type mutual inductor and singlechip chip, described one-chip computer module comprises the testing circuit, treatment circuit and the suppression signal output apparatus that connect successively, described testing circuit input end is connected with magnetic balance type mutual inductor, described suppression signal output apparatus output terminal is connected with magnetic balance type mutual inductor, and described magnetic balance type mutual inductor is connected with electrical network.
2. a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor according to claim 1, it is characterized in that, described magnetic balance type mutual inductor comprises two, be respectively the first magnetic balance type mutual inductor and the second magnetic balance type mutual inductor, the input end of the first described magnetic balance type mutual inductor is directly connected with electrical network, the input end of the second described magnetic balance type mutual inductor is connected with electrical network by resistance, and the output terminal of two magnetic balance type mutual inductors is all connected with testing circuit.
3. a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor according to claim 2, it is characterized in that, described testing circuit comprises current detection circuit and voltage detecting circuit, described current detection circuit is connected with the first magnetic balance type mutual inductor, and described voltage detecting circuit is connected with the second magnetic balance type mutual inductor.
4. a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor according to claim 2, it is characterized in that, each magnetic balance type mutual inductor includes three windings, be respectively the first winding, the second winding and the tertiary winding, the first described winding is connected with electrical network, the second described winding is connected with testing circuit, and the described tertiary winding is connected with suppression signal output apparatus.
5. a kind of electricity digitizer based on single-chip microcomputer and magnetic balance type mutual inductor according to claim 1, it is characterized in that, described treatment circuit is to the process of electric signal, comprise and calculate electric current, voltage, power and power factor value, and FFT conversion is carried out to the signal gathered, calculate each harmonic content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055902.XA CN104655924A (en) | 2015-02-03 | 2015-02-03 | Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055902.XA CN104655924A (en) | 2015-02-03 | 2015-02-03 | Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor |
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| Publication Number | Publication Date |
|---|---|
| CN104655924A true CN104655924A (en) | 2015-05-27 |
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|---|---|---|---|
| CN201510055902.XA Pending CN104655924A (en) | 2015-02-03 | 2015-02-03 | Electricity digital converter based on single-chip microcomputer and magnetic balance type mutual inductor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069466A (en) * | 2002-08-06 | 2004-03-04 | Kyoritsu Electrical Instruments Works Ltd | Electric current measuring device |
| CN102193021A (en) * | 2010-02-23 | 2011-09-21 | 阿尔卑斯绿色器件株式会社 | Current sensor |
| CN102279305A (en) * | 2011-04-13 | 2011-12-14 | 大连丰和电力科技有限公司 | Closed loop magnetic balance type Hall current sensor |
| CN202256455U (en) * | 2011-10-12 | 2012-05-30 | 长沙南车电气设备有限公司 | Magnetic balanced type Hall current sensor |
| CN104297565A (en) * | 2014-10-24 | 2015-01-21 | 上海交通大学 | Electric quantity digital converter based on FPGA and magnetic balance type Hall sensor |
| CN104297564A (en) * | 2014-10-24 | 2015-01-21 | 上海交通大学 | Electric quantity digital converter based on FPGA and magnetic balance type mutual inductor |
-
2015
- 2015-02-03 CN CN201510055902.XA patent/CN104655924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004069466A (en) * | 2002-08-06 | 2004-03-04 | Kyoritsu Electrical Instruments Works Ltd | Electric current measuring device |
| CN102193021A (en) * | 2010-02-23 | 2011-09-21 | 阿尔卑斯绿色器件株式会社 | Current sensor |
| CN102279305A (en) * | 2011-04-13 | 2011-12-14 | 大连丰和电力科技有限公司 | Closed loop magnetic balance type Hall current sensor |
| CN202256455U (en) * | 2011-10-12 | 2012-05-30 | 长沙南车电气设备有限公司 | Magnetic balanced type Hall current sensor |
| CN104297565A (en) * | 2014-10-24 | 2015-01-21 | 上海交通大学 | Electric quantity digital converter based on FPGA and magnetic balance type Hall sensor |
| CN104297564A (en) * | 2014-10-24 | 2015-01-21 | 上海交通大学 | Electric quantity digital converter based on FPGA and magnetic balance type mutual inductor |
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Application publication date: 20150527 |
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