CN104678165A - Electric quantity digitizer based on ARM (Advanced RISC Machine) and magnetic balance type Hall sensor - Google Patents
Electric quantity digitizer based on ARM (Advanced RISC Machine) and magnetic balance type Hall sensor Download PDFInfo
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- CN104678165A CN104678165A CN201510057283.8A CN201510057283A CN104678165A CN 104678165 A CN104678165 A CN 104678165A CN 201510057283 A CN201510057283 A CN 201510057283A CN 104678165 A CN104678165 A CN 104678165A
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Abstract
The invention relates to an electric quantity digitizer based on an ARM (Advanced RISC Machine) and a magnetic balance type Hall sensor. The digitizer is connected to a power grid and comprises a magnetic balance type Hall current sensor and an ARM chip which are connected to each other; the ARM chip comprises a detection circuit, a processing circuit and an inhibiting signal output circuit which are sequentially connected; the magnetic balance type Hall current sensor is respectively connected with the power grid, the detection circuit and the inhibiting signal output circuit. Compared with the prior art, the electric quantity digitizer is reasonable in design, simple in structure and low in cost, and the current sensor is directly connected with the ARM control chip to each other without the need of additionally arranging an AD (Analog-to-Digital) conversion device; owing to low power consumption and high performances of the magnetic balance type Hall sensor and the ARM control chip, the detection precision is effectively improved and the product cost is saved; the quality of the power grid can be effectively monitored; in the meantime, the functions are more complete.
Description
Technical field
The present invention relates to a kind of electricity digitizer, especially relate to a kind of electricity digitizer based on ARM and magnetic balance type Hall element.
Background technology
Ensure the high stability of the quality of power supply, this problem has become the major issue of Utilities Electric Co. and the urgent need solution of other generating departments, solution generally relies on the ruuning situation of monitoring, record, the analysis quality of power supply, thus obtain the various valid data of the quality of power supply, carry out Bian by these data and get corresponding counter-measure, object improves the quality of power supply.There are some electric-energy monitoring devices in the market, but most of function is simple, be not suitable with the demand of the current monitoring to the quality of power supply, so market is emerged in large numbers a collection of research staff to carry out theoretical research and practice to high precision, multi-functional electric energy quality monitoring equipment.In addition, along with the innovation of mathematical algorithm, the rapid progress of high-end chip technology, utilizes new technology, new theory, new tool to allow electric-energy monitoring device have and has feature that is multi-functional, high-timeliness, and then be 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 ARM and magnetic balance type Hall element 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 ARM and magnetic balance type Hall element, this converter is connected on electrical network, it is characterized in that, described converter comprises interconnective magnetic balance type Hall current sensor and ARM chip, described ARM chip comprises the testing circuit, treatment circuit and the suppression signal output apparatus that connect successively, and described magnetic balance type Hall current sensor is connected with electrical network, testing circuit and suppression signal output apparatus respectively.
Described magnetic balance type Hall current sensor comprises two, be respectively the first magnetic balance type Hall current sensor and the second magnetic balance type Hall current sensor, the input end of the first described magnetic balance type Hall current sensor is directly connected with electrical network, output terminal is connected with testing circuit, the input end of the second described magnetic balance type Hall current sensor is connected with electrical network by resistance, and output terminal is connected with testing circuit.
Described testing circuit comprises the current detection circuit and voltage detecting circuit that are connected with treatment circuit respectively, described current detection circuit input end is connected with the first magnetic balance type Hall current sensor, and described voltage detecting circuit input end is connected with the second magnetic balance type Hall current sensor.
Each magnetic balance type Hall current sensor comprises primary coil, secondary coil and Hall element end, described primary coil is connected with electrical network, described testing circuit input end is connected with Hall element end, and the output terminal of described suppression signal output apparatus is connected with secondary coil.
Described treatment circuit processes the electric signal gathered, and comprises and calculates electric current, voltage, power and power factor value, and carries out FFT conversion to the signal gathered, and calculates 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 current sensor directly and ARM control chip interconnect; By low-power consumption, the high-performance of magnetic balance type Hall element and ARM control chip, effectively improve accuracy of detection, save cost of products, effectively monitor power grid quality, function is more perfect.
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, cannot directly measure, therefore need to utilize current sensor power network signal to be become the low-voltage signal that can survey and be sent in device.Magnetic balance type Hall current sensor is adopted in the present invention.Current parameters is detected, directly power network signal is accessed the primary coil of sensor; And voltage parameter is detected, change voltage signal into current signal by the resistance R that connects and record.
As shown in Figure 1, converter of the present invention comprises interconnective magnetic balance type Hall current sensor and ARM chip 3, described ARM chip 3 comprises the testing circuit, treatment circuit 33 and the suppression signal output apparatus 34 that connect successively, and described magnetic balance type Hall current sensor is connected with electrical network, testing circuit and suppression signal output apparatus 34 respectively.
Described magnetic balance type Hall current sensor comprises two, be respectively the first magnetic balance type Hall current sensor 1 and the second magnetic balance type Hall current sensor 2, the input end of the first described magnetic balance type Hall current sensor 1 is directly connected with electrical network, output terminal is connected with testing circuit, the input end of the second described magnetic balance type Hall current sensor 2 is connected with electrical network by resistance, and output terminal is connected with testing circuit.
Described testing circuit comprises the current detection circuit 31 and voltage detecting circuit 32 that are connected with treatment circuit respectively, described current detection circuit 31 input end is connected with the first magnetic balance type Hall current sensor 1, and described voltage detecting circuit 32 input end is connected with the second magnetic balance type Hall current sensor 2.
Each magnetic balance type Hall current sensor comprises primary coil, secondary coil and Hall element end, described primary coil is connected with electrical network, described testing circuit input end is connected with Hall element end, and the output terminal of described suppression signal output apparatus is connected with secondary coil.
In Fig. 1, the first magnetic balance type Hall current sensor 1 is for current detecting, if its former and deputy limit coil ratio is n
1, the second magnetic balance type Hall current sensor 2 is for voltage detecting, if its former and deputy limit coil ratio is n
2.Hall element in two current sensors is connected with ARM chip 3, detects the induction current size i in Hall element
1, i
2.According to induction current i
1, i
2size, the suppression current signal i that adjustment ARM chip 3 exports
3, i
4, cancelling out each other in the magnetic field produced of the magnetic field allowing secondary coil produce in magnetism gathering rings and primary coil, thus makes i
1, i
2be 0.Therefore can obtain:
Utilize ARM realization to the collection of electric signal and data processing, obtain the parameter values such as electric current, voltage, active power, utilize FFT, Hilbert scheduling algorithm calculates each harmonic content, reactive power and power factor simultaneously.And by Software for Design, sequential control and calculating, transmission process are carried out to links.
It is emphasized that the preferred embodiment of the present invention just sets forth the present invention for helping.Preferred embodiment does not have all details of detailed descriptionthe, does not limit the embodiment that this invention is only described yet.Obviously, according to the content of this instructions, can make many modifications and variations.This instructions is chosen and is specifically described these embodiments, is to explain principle of the present invention and practical application better, thus makes art technician can utilize the present invention well.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (5)
1. the electricity digitizer based on ARM and magnetic balance type Hall element, this converter is connected on electrical network, it is characterized in that, described converter comprises interconnective magnetic balance type Hall current sensor and ARM chip, described ARM chip comprises the testing circuit, treatment circuit and the suppression signal output apparatus that connect successively, and described magnetic balance type Hall current sensor is connected with electrical network, testing circuit and suppression signal output apparatus respectively.
2. a kind of electricity digitizer based on ARM and magnetic balance type Hall element according to claim 1, it is characterized in that, described magnetic balance type Hall current sensor comprises two, be respectively the first magnetic balance type Hall current sensor and the second magnetic balance type Hall current sensor, the input end of the first described magnetic balance type Hall current sensor is directly connected with electrical network, output terminal is connected with testing circuit, the input end of the second described magnetic balance type Hall current sensor is connected with electrical network by resistance, and output terminal is connected with testing circuit.
3. a kind of electricity digitizer based on ARM and magnetic balance type Hall element according to claim 2, it is characterized in that, described testing circuit comprises the current detection circuit and voltage detecting circuit that are connected with treatment circuit respectively, described current detection circuit input end is connected with the first magnetic balance type Hall current sensor, and described voltage detecting circuit input end is connected with the second magnetic balance type Hall current sensor.
4. a kind of electricity digitizer based on ARM and magnetic balance type Hall element according to claim 1, it is characterized in that, each magnetic balance type Hall current sensor comprises primary coil, secondary coil and Hall element end, described primary coil is connected with electrical network, described testing circuit input end is connected with Hall element end, and the output terminal of described suppression signal output apparatus is connected with secondary coil.
5. a kind of electricity digitizer based on ARM and magnetic balance type Hall element according to claim 1, it is characterized in that, described treatment circuit processes the electric signal gathered, 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 |
|---|---|---|---|
| CN201510057283.8A CN104678165A (en) | 2015-02-03 | 2015-02-03 | Electric quantity digitizer based on ARM (Advanced RISC Machine) and magnetic balance type Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057283.8A CN104678165A (en) | 2015-02-03 | 2015-02-03 | Electric quantity digitizer based on ARM (Advanced RISC Machine) and magnetic balance type Hall sensor |
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| CN104678165A true CN104678165A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510057283.8A Pending CN104678165A (en) | 2015-02-03 | 2015-02-03 | Electric quantity digitizer based on ARM (Advanced RISC Machine) and magnetic balance type Hall sensor |
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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 CN201510057283.8A patent/CN104678165A/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: 20150603 |