CN205910244U - Current clamp table of interchangeable correction - Google Patents
Current clamp table of interchangeable correction Download PDFInfo
- Publication number
- CN205910244U CN205910244U CN201620543185.5U CN201620543185U CN205910244U CN 205910244 U CN205910244 U CN 205910244U CN 201620543185 U CN201620543185 U CN 201620543185U CN 205910244 U CN205910244 U CN 205910244U
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- China
- Prior art keywords
- control unit
- core type
- type meter
- split
- correction
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Abstract
The utility model discloses a current clamp table of interchangeable correction, including split -core type meter sense terminal, memory and little the control unit, the one end of split -core type meter sense terminal pass through the wire and be connected with little the control unit's control signal terminal mouth, the other end passes through the wire to be connected with the the control unit's that declines ground connection port, the input port of memory be connected with little the control unit's the port of writing in into through data bus, the output port of memory be connected with little the control unit's the port that reads through data bus. The utility model relates to a current clamp table of interchangeable correction can realize the precision measurement of current clamp table full -scale range, and little the control unit can be according to load range, and select the digit to revise the algorithm or multiple spot correction algorithm carries out the error correction, and the accuracy of forming device is only relevant with split -core type meter itself, and irrelevant with equipment, has realized the arbitrary exchange of outside split -core type meter, and automatic, integrated degree is higher, facilitates the use and operates.
Description
[technical field]
The utility model is related to the technical field of electric current split-core type meter, particularly to a kind of electric current split-core type meter of interchangeable correction.
[background technology]
Electric current split-core type meter, also known as clamp on amperemeter, is to be combined by current transformer and ammeter.The iron of current transformer
Core can open when clutching spanner, and the wire that tested electric current is passed through may not necessarily cut off lacking of may pass through that iron core opens
Mouthful, iron core closure after decontroling spanner.When generally using common current table measurement electric current, after needing to shut down circuitry cuts could incite somebody to action
Ammeter accesses and measures, and this is pretty troublesome, and the normal motor running does not allow do so sometimes.Now, using pincers
Shape ammeter just seems more convenient, can measure electric current in the case of not cutting off circuit.
In present electric energy meter field is tested, because the primary of electric current split-core type meter only has a circle, and iron core is openings
Formula, therefore its certainty of measurement is not high, and different batches material, production technology etc. all can cause differing of split-core type meter experiment curv
Cause test.So the certainty of measurement of whole equipment typically improves by the correction of device interior in equipment vendors, but this side
Formula has and to limit it is simply that equipment and split-core type meter must be one-to-one, otherwise will generation system round-off error.Also there is equipment
Business men trims circuit mode using the internal compensation of split-core type meter, is revised typically in 100%～20% load range using numeral
Relatively good, but this mode can only revise linear error, and below 20% load, due to linear deviation, numeral revises
It is difficult to meet and require.Electric current split-core type meter in order to solve above-mentioned different model can not arbitrarily exchange, the relatively low problem of certainty of measurement, has
A kind of electric current split-core type meter of interchangeable correction of necessary proposition.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of electric current of interchangeable correction
Split-core type meter, it aims to solve the problem that the electric current split-core type meter of different model in prior art can not arbitrarily exchange, and the relatively low technology of certainty of measurement is asked
Topic.
For achieving the above object, the utility model proposes a kind of electric current split-core type meter of interchangeable correction, detect including split-core type meter
End, memory and micro-control unit, the control signal end of wire and micro-control unit is passed through in one end of described split-core type meter test side
Mouth connects, and the other end is connected with the grounding ports of micro-control unit by wire, and the input port of described memory passes through number
It is connected with the write port of micro-control unit according to bus, the output port of described memory passes through data/address bus and microcontroller list
The read port of unit connects.
Preferably, described micro-control unit is controlled with the human-computer interaction interface on electric current split-core type meter being connected.
Preferably, described memory and micro-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 interchangeable correction of the utility model offer
Electric current split-core type meter, rational in infrastructure, memory internal memory contains digital correction algorithm and multiple spot correction algorithm, can meet electric current split-core type meter full dose
Error correction in journey, improves certainty of measurement, improves the load model that digital correction algorithm at present is only applicable to 100%～20%
Error correction in enclosing, the load range correction effect for less than 20% is poor, leads to the problem that certainty of measurement is relatively low, measurement
Before, first by the memory that the correction factor reset current split-core type meter after accurately is trimmed on standard device, during measurement, micro-control unit
According to the scope of load, it is modified using suitable correction algorithm, finally the precise results after error correction are shown in people
On machine interactive interface, automation, integrated degree are high, are simultaneously achieved any exchange of outside split-core type meter.
Feature of the present utility model and advantage will combine accompanying drawing by embodiment and be described in detail.
[brief description]
Fig. 1 is a kind of schematic diagram of the electric current split-core type meter of interchangeable correction of the utility model embodiment.
In figure: 1- split-core type meter test side, 2- memory, 3- micro-control unit, 31- control signal port, 32- grounding ports,
33- read port, 34- write port.
[specific embodiment]
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 the utility model.However, it should be understood that specific embodiment described herein only in order to
Explain the utility model, be not limited to scope of the present utility model.Additionally, in the following description, eliminate to known knot
Structure and the description of technology, to avoid unnecessarily obscuring concept of the present utility model.
Refering to Fig. 1, the utility model embodiment provides a kind of electric current split-core type meter of interchangeable correction, including split-core type meter test side 1,
Memory 2 and micro-control unit 3, the control signal end of wire and micro-control unit 3 is passed through in one end of described split-core type meter test side 1
Mouthfuls 31 connections, the other end is connected with the grounding ports 32 of micro-control unit 3 by wire, the input port of described memory 2
It is connected with the write port 34 of micro-control unit 3 by data/address bus, the output port of described memory 2 passes through data/address bus
It is connected with the read port 33 of micro-control unit 3.
Wherein, described micro-control unit 3 is connected with the human-computer interaction interface control on electric current split-core type meter.During use,
Correction factor is write on human-computer interaction interface, micro-control unit 3 is inputted correction factor to memory 2 by data/address bus
Storage, the measurement result after error correction is shown on human-computer interaction interface micro-control unit 3, realizes Automated condtrol, makes
With convenient, simple to operate.
Further, described memory 2 internal memory contains digital correction algorithm and multiple spot correction algorithm.Revised by numeral
Algorithm and multiple spot correction algorithm, not only meet the error correction in 100%～20% load range moreover it is possible to meet less than 20%
Error correction in load range, improves certainty of measurement.
In the utility model embodiment, load, in the range of 100%～20%, selects digital correction algorithm, load
In scope below 20%, select multiple spot correction algorithm.
Further, described memory 2 and micro-control unit 3 are installed in inside electric current split-core type meter.Integrated degree
Height, small volume, it is convenient for carrying, be convenient for measuring.
Utility model works process:
A kind of electric current split-core type meter of interchangeable correction of the utility model in the course of the work, first by electric current split-core type meter in standard device
On trim after accurately, the correction factor of sub-load point is write in the memory 2 of split-core type meter by human-computer interaction interface, measures
When equipment uses, split-core type meter test side 1 is connected with equipment, and the electric signal of detection passes through wire transmission to micro-control unit 3, microcontroller
Unit 3 reads the correction factor of split-core type meter from memory 2, and according to load range, selects digital correction algorithm or multiple spot correction
Algorithm carries out error correction, and final measurement result is shown on human-computer interaction interface, forms the accuracy of measurement of equipment
Only relevant with split-core type meter itself, and unrelated with equipment it is achieved that the accurate measurement of electric current split-core type meter gamut is it is achieved that outside split-core type meter
Arbitrarily exchange.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this
Any modification, equivalent or improvement made within the spirit of utility model and principle etc., should be included in the utility model
Protection domain within.
Claims (3)
1. a kind of electric current split-core type meter of interchangeable correction, including split-core type meter test side (1), memory (2) and micro-control unit (3), its
It is characterised by: one end of described split-core type meter test side (1) is passed through wire and connected with the control signal port (31) of micro-control unit (3)
Connect, the other end is connected with the grounding ports (32) of micro-control unit (3) by wire, the input port of described memory (2)
It is connected with the write port (34) of micro-control unit (3) by data/address bus, the output port of described memory (2) passes through number
It is connected with the read port (33) of micro-control unit (3) according to bus.
2. as claimed in claim 1 a kind of electric current split-core type meter of interchangeable correction it is characterised in that: described micro-control unit
(3) control with the human-computer interaction interface on electric current split-core type meter and be connected.
3. as claimed in claim 1 a kind of electric current split-core type meter of interchangeable correction it is characterised in that: described memory (2) and
Micro-control unit (3) is installed in inside electric current split-core type meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543185.5U CN205910244U (en) | 2016-06-06 | 2016-06-06 | Current clamp table of interchangeable correction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620543185.5U CN205910244U (en) | 2016-06-06 | 2016-06-06 | Current clamp table of interchangeable correction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205910244U true CN205910244U (en) | 2017-01-25 |
Family
ID=57814732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620543185.5U Expired - Fee Related CN205910244U (en) | 2016-06-06 | 2016-06-06 | Current clamp table of interchangeable correction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205910244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562789A (en) * | 2018-06-13 | 2018-09-21 | 深圳市科陆精密仪器有限公司 | A kind of split-core type meter identifying system |
| CN112782575A (en) * | 2020-12-27 | 2021-05-11 | 常熟开关制造有限公司(原常熟开关厂） | Current measuring device for circuit breaker, maintenance and correction method of current measuring device and intelligent circuit breaker |
-
2016
- 2016-06-06 CN CN201620543185.5U patent/CN205910244U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562789A (en) * | 2018-06-13 | 2018-09-21 | 深圳市科陆精密仪器有限公司 | A kind of split-core type meter identifying system |
| CN112782575A (en) * | 2020-12-27 | 2021-05-11 | 常熟开关制造有限公司(原常熟开关厂） | Current measuring device for circuit breaker, maintenance and correction method of current measuring device and intelligent circuit breaker |
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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: 20170125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |