CN205786811U - A kind of electric current split-core type meter of high-accuracy wide-range - Google Patents
A kind of electric current split-core type meter of high-accuracy wide-range Download PDFInfo
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- CN205786811U CN205786811U CN201620546293.8U CN201620546293U CN205786811U CN 205786811 U CN205786811 U CN 205786811U CN 201620546293 U CN201620546293 U CN 201620546293U CN 205786811 U CN205786811 U CN 205786811U
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- sampling resistor
- core type
- type meter
- sampling
- electric current
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- Measurement Of Current Or Voltage (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses the electric current split-core type meter of a kind of high-accuracy wide-range, including split-core type meter test side, sampling switch, first sampling resistor, second sampling resistor and control unit, one end of described split-core type meter test side is connected by one end of wire with sampling switch, the other end is connected with the grounding ports of control unit by wire, the other end of described sampling switch is by controlling bus, data/address bus respectively with the control port of control unit, signal port connects formation and controls feedback circuit, connect on described sampling switch and have the first sampling resistor and the second sampling resistor, the first described sampling resistor and the other end of the second sampling resistor are all connected with the grounding ports of control unit.The electric current split-core type meter of a kind of high-accuracy wide-range of this utility model, can use different sampling resistors, to obtain maximum sampled signal steady in a long-term, it is achieved that high measurement accuracy and wide range measure according to different load switchings.
Description
[technical field]
This utility model relates to the technical field of electric current split-core type meter, particularly to the electric current split-core type meter of a kind of high-accuracy wide-range.
[background technology]
In present electric energy meter field test, typically utilize electric current split-core type meter to realize the detection of not opening a way of user side, give and use
Family does not cause any use to affect.Owing to the primary of electric current split-core type meter only has a circle, and iron core is opening mode, therefore its
Certainty of measurement is the highest, and different batches material, production technology etc. all can cause the inconsistent test of split-core type meter experiment curv.So
The certainty of measurement of whole equipment typically improves by the correction of device interior in equipment vendors, but this mode has a restriction,
It is exactly equipment and split-core type meter must be one to one, otherwise will produce the round-off error of system, for wide-range test request
Cannot meet, and long-term stability also cannot ensure.In order to improve certainty of measurement and the wide range measure of electric current split-core type meter, have
The necessary electric current split-core type meter proposing a kind of high-accuracy wide-range.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that the electric current of a kind of high-accuracy wide-range
Split-core type meter, it aims to solve the problem that in prior art, the certainty of measurement of electric current split-core type meter is relatively low, the technical problem that range is shorter.
For achieving the above object, the utility model proposes the electric current split-core type meter of a kind of high-accuracy wide-range, examine including split-core type meter
Surveying end, sampling switch, the first sampling resistor, the second sampling resistor and control unit, one end of described split-core type meter test side leads to
Crossing wire to be connected with one end of sampling switch, the other end is connected with the grounding ports of control unit by wire, and described adopts
The other end of sample switch is connected shape with control port, the signal port of control unit respectively by controlling bus, data/address bus
Becoming to control feedback circuit, described sampling switch connects the first sampling resistor and the second sampling resistor, described first
The other end of sampling resistor and the second sampling resistor is all connected with the grounding ports of control unit.
As preferably, described sampling switch controls the first sampling resistor or the second sampling resistor accesses loop.
As preferably, described split-core type meter test side, the first sampling resistor, the second sampling resistor three are in parallel.
As preferably, the first described sampling resistor and the sampling resistor that the second sampling resistor is high precision high stability degree.
As preferably, the resistance of the first described sampling resistor and the second sampling resistor is different.
As preferably, described sampling switch is controlled by control unit.
As preferably, described sampling switch, the first sampling resistor, the second sampling resistor and control unit are installed in
Inside electric current split-core type meter.
The beneficial effects of the utility model: compared with prior art, a kind of high-accuracy wide-range that this utility model provides
Electric current split-core type meter, rational in infrastructure, the first sampling resistor, the second sampling resistor high accuracy, high stability sampling resistor, different negative
Carrying switching and use different sampling resistors, it is possible to obtain maximum sampled signal steady in a long-term, in using, control unit is according to negative
Situation about carrying, switches over the first sampling resistor or the second sampling resistor, split-core type meter test side simultaneously by controlling sampling switch
The signal detected is transmitted to control unit by sampling switch, and control unit controls to carry out at the display port of electric current split-core type meter
Display, it is achieved that high measurement accuracy and wide range measure.
Feature of the present utility model and advantage will combine accompanying drawing by embodiment and be described in detail.
[accompanying drawing explanation]
Fig. 1 is the fundamental diagram of the electric current split-core type meter of a kind of high-accuracy wide-range of this utility model embodiment.
In figure: 1-split-core type meter test side, 2-sampling switch, 3-the first sampling resistor, 4-the second sampling resistor, 5-control single
Unit, 51-control port, 52-signal port, 53-grounding ports.
[detailed description of the invention]
For making the purpose of this utility model, technical scheme and advantage of greater clarity, below by accompanying drawing and implement
Example, is further elaborated to this utility model.However, it should be understood that specific embodiment described herein only in order to
Explain this utility model, be not limited to scope of the present utility model.Additionally, in the following description, eliminate known knot
Structure and the description of technology, to avoid unnecessarily obscuring concept of the present utility model.
Refering to Fig. 1, this utility model embodiment provides the electric current split-core type meter of a kind of high-accuracy wide-range, including split-core type meter test side
1, sampling switch the 2, first sampling resistor the 3, second sampling resistor 4 and control unit 5, one end of described split-core type meter test side 1
Being connected by one end of wire with sampling switch 2, the other end is connected with the grounding ports 53 of control unit 5 by wire, institute
The other end of the sampling switch 2 stated by control bus, data/address bus respectively with control port 51, the signal of control unit 5
Port 52 connects formation and controls feedback circuit, described sampling switch 2 connects and has the first sampling resistor 3 and the second sampling electricity
Resistance 4, the first described sampling resistor 3 and the other end of the second sampling resistor 4 are all connected with the grounding ports 53 of control unit 5.
Wherein, described sampling switch 2 controls the first sampling resistor 3 or the second sampling resistor 4 accesses loop.Measure
Time, according to different loading conditions, use different sampling resistors by sampling switch 2 switching, steady in a long-term to obtain
Maximum sampled signal.
Further, described split-core type meter test side the 1, first sampling resistor the 3, second sampling resistor 4 three is in parallel, described
First sampling resistor 3 and the sampling resistor that the second sampling resistor 4 is high precision high stability degree, the first described sampling resistor 3 He
The resistance of the second sampling resistor 4 is different.The accurate measurement of electric current split-core type meter is realized by first sampling resistor the 3, second sampling resistor 4
And wide range measure.
Further, described sampling switch 2 is controlled by control unit 5.
Further, described sampling switch the 2, first sampling resistor the 3, second sampling resistor 4 and control unit 5 are equal
It is arranged on inside electric current split-core type meter, it is achieved the integration of electric current split-core type meter, reduces volume, convenient operation and use.
Utility model works process:
The electric current split-core type meter of a kind of high-accuracy wide-range of this utility model during measurement equipment, control unit 5 basis
The situation of load, switches over the first sampling resistor 3 or the second sampling resistor 4 by controlling sampling switch 2, long-term to obtain
Stable maximum sampled signal, improves certainty of measurement, and the signal that split-core type meter test side 1 detects simultaneously is passed by sampling switch 2
Transporting to control unit 5, control unit 5 shows at the display port of electric current split-core type meter, it is achieved that high measurement accuracy (0.1%) and
Wide range measure (120%～1 ‰).
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent or the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (7)
1. an electric current split-core type meter for high-accuracy wide-range, including split-core type meter test side (1), sampling switch (2), the first sampling resistor
(3), the second sampling resistor (4) and control unit (5), it is characterised in that: wire is passed through in one end of described split-core type meter test side (1)
Being connected with one end of sampling switch (2), the other end is connected with the grounding ports (53) of control unit (5) by wire, described
Sampling switch (2) the other end by control bus, data/address bus respectively with the control port (51) of control unit (5),
Signal port (52) connects to be formed and controls feedback circuit, the upper connection of described sampling switch (2) have the first sampling resistor (3) and
Second sampling resistor (4), described the first sampling resistor (3) and the other end of the second sampling resistor (4) all with control unit (5)
Grounding ports (53) connect.
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 1, it is characterised in that: described sampling switch
(2) control the first sampling resistor (3) or the second sampling resistor (4) accesses loop.
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 1, it is characterised in that: described split-core type meter test side
(1), the first sampling resistor (3), the second sampling resistor (4) three parallel connection.
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 1, it is characterised in that: the first described sampling electricity
Resistance (3) and the sampling resistor that the second sampling resistor (4) is high precision high stability degree.
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 4, it is characterised in that: the first described sampling electricity
Resistance (3) is different with the resistance of the second sampling resistor (4).
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 1, it is characterised in that: described sampling switch
(2) controlled by control unit (5).
The electric current split-core type meter of a kind of high-accuracy wide-range the most as claimed in claim 1, it is characterised in that: described sampling switch
(2), the first sampling resistor (3), the second sampling resistor (4) and control unit (5) are installed in inside electric current split-core type meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546293.8U CN205786811U (en) | 2016-06-06 | 2016-06-06 | A kind of electric current split-core type meter of high-accuracy wide-range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546293.8U CN205786811U (en) | 2016-06-06 | 2016-06-06 | A kind of electric current split-core type meter of high-accuracy wide-range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205786811U true CN205786811U (en) | 2016-12-07 |
Family
ID=58135130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620546293.8U Expired - Fee Related CN205786811U (en) | 2016-06-06 | 2016-06-06 | A kind of electric current split-core type meter of high-accuracy wide-range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205786811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646086A (en) * | 2018-07-11 | 2018-10-12 | 盖泽工业（天津）有限公司 | A kind of window opener gamut current detection circuit for multi-load |
| CN112415253A (en) * | 2020-11-16 | 2021-02-26 | 北京深思数盾科技股份有限公司 | Circuit and system for testing working current of circuit board |
-
2016
- 2016-06-06 CN CN201620546293.8U patent/CN205786811U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646086A (en) * | 2018-07-11 | 2018-10-12 | 盖泽工业（天津）有限公司 | A kind of window opener gamut current detection circuit for multi-load |
| CN112415253A (en) * | 2020-11-16 | 2021-02-26 | 北京深思数盾科技股份有限公司 | Circuit and system for testing working current of circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |