CN205301570U - On --spot check gauge of intelligent electric energy meter - Google Patents
On --spot check gauge of intelligent electric energy meter Download PDFInfo
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- CN205301570U CN205301570U CN201521112654.XU CN201521112654U CN205301570U CN 205301570 U CN205301570 U CN 205301570U CN 201521112654 U CN201521112654 U CN 201521112654U CN 205301570 U CN205301570 U CN 205301570U
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Abstract
The utility model belongs to the technical field of electric energy meter check -up technique and specifically relates to an on - -spot check gauge of intelligent electric energy meter, including check -up electric energy meter, data processing module, communication module and sampling module, the sampling module is equipped with current sampling circuit, voltage sampling circuit, pulse signal sampling circuit, temperature sampling circuit and humidity sampling circuit, sampling circuit's output is connected with the microcontroller type end in the sampling module. The utility model discloses an on - -spot check gauge of intelligent electric energy meter adopts meritorious, the idle pulse signal of check -up electric energy meter as the sampling control signal of the on -the -spot check gauge of electric energy meter, realizes that the on -the -spot check gauge of electric energy meter is synchronous to the sampling and the check -up electric energy meter of electric current, voltage, frequency, has improved the check -up precision of check gauge.
Description
Technical field
This utility model relates to electrical energy meter calibration technical field, especially a kind of the intelligent electric energy meter calibration equipment.
Background technology
Electric energy metrical is an important step in modern electric marketing system, traditional mechanical power energy meter can not meet the electricity consumption requirement of Electricity customers, all Shortcomings in real-time, accuracy and application etc., since the upgrading of rural power grids, the electronic electric energy meter that function is more perfect is used widely in power system. field-checking and circuit inspection process will often find that following phenomenon: in working site, the electric energy meter qualified in laboratory verification has been found that checking data exists bigger error, there is bigger error in the electrical energy metering data being arranged between client's electric energy meter at scene and metering summary table, main cause is to there is DC component in load to cause that the iron core of forcipated mutual-inductor enters zone of saturation, under theoretical case, electric current in winding of transformer will be completely used for excitation, transformer secondary current is 0, can not truly reflect primary current size, thus affecting the certainty of measurement of electric energy meter, make field-checking operational failure, equipment even can be damaged time serious.
Existing tester also has the problem that
1, existing electric energy meter on-site calibrator only one of which display screen, it is mainly used in operational data and the measurement data of display tester and the measurement data of verification electric energy meter, owing to the content of display is more, easily obscure the data of the two, it has not been convenient to the reading of data and checking.
2, when the electric parameters of verification electric energy meter is detected by existing electric energy meter on-site calibrator, tester display screen only shows the detection data of tester, do not show the measurement data of verification electric energy meter, it is thus impossible to conveniently, intuitively to detection data and measurement data compare and verify.
3, existing electric energy meter on-site calibrator does not have the function of measure field ambient temperature and humidity, it is impossible to checking data carries out the correction of temperature and humidity influence amount.
4, existing electric energy meter on-site calibrator, reason due to volume, weight or surface structure, be not suitable for being arranged on on-the-spot long-time use, therefore to some electric parameters needing to carry out Site Detection for a long time, or need to carry out for a long time autoptic function, it is impossible to carry out detecting and verifying.
Utility model content
The purpose of this utility model is the defect overcoming prior art to exist, it is provided that a kind of the intelligent electric energy meter on-site calibrator improving certainty of measurement.
In order to realize the purpose of this utility model, be the technical scheme is that
The intelligent electric energy meter on-site calibrator of the present utility model, including:
Verification electric energy meter, described verification electric energy meter is provided with the alternating current-direct current testing circuit for detecting the ac and dc current by verifying electric energy meter and DC offset circuit, and described DC offset circuit is for offsetting the magnetic flux that verification electric energy meter DC component produces;
Data processing module, described data processing module is constituted by receiving the process verification electric energy meter detection single-chip microcomputer of signal, memorizer and clock chip;
Communication module, described communication module is provided with infrared communication circuit and two groups of RS485 telecommunication circuits, and the input of infrared communication circuit is connected with the COM1 of single-chip microcomputer, and the input of 2 groups of RS485 telecommunication circuits is connected with the COM1 of single-chip microcomputer;
Sampling module, described sampling module is provided with current sampling circuit, voltage sampling circuit, pulse signal sampling circuit, temperature sampling circuit and humidity sample circuit, and in described sampling module, the outfan of sample circuit is connected with single-chip microcomputer input.
DC offset circuit described in the utility model is the DC compensation coil being located in verification electric energy meter, and described DC compensation coil injects a reverse magnetic flux to the iron core of verification electric energy meter.
Memorizer described in the utility model is connected with single-chip microcomputer respectively with clock chip, and described clock chip is for producing the clock signal of single-chip microcomputer work, and described single-chip microcomputer input is connected to button, and the outfan of single-chip microcomputer is connected to luminous tube and display screen.
Current signal on current terminal mouth is sampled by current sampling circuit described in the utility model, voltage signal on voltage link port is sampled by voltage sampling circuit, pulse signal on meritorious pulse signal input terminal on verification connection box of electric energy meter port, the pulse signal on idle pulse signal input terminal and the pulse signal on multifunctional pulse signal input terminal are sampled by pulse signal sampling circuit, the temperature of environment is sampled by temperature sampling circuit, and the humidity of environment is sampled by humidity sample circuit.
Tester described in the utility model also has shell, tester viewing area, verification electric energy meter viewing area, tester Wiring port, verification connection box of electric energy meter port, current terminal mouth, voltage link port and communication module socket.
The communication window of the outfan docking tester viewing area of infrared communication circuit described in the utility model, the outfan of 2 groups of RS485 telecommunication circuits is connected with the RS485 Interface Terminal of tester Wiring port and tester Wiring port respectively, and the communication input of communication module socket is connected with the COM1 of single-chip microcomputer.
Tester Wiring port described in the utility model includes meritorious pulse signal output end pulse signal output end, idle, multifunctional pulse signal output terminal, RS485 Interface Terminal, and described verification connection box of electric energy meter port includes merit pulse signal input terminal pulse signal input terminal, idle, multifunctional pulse signal input terminal, RS485 Interface Terminal.
Tester viewing area described in the utility model includes display screen, luminous tube, communication window, button, and described verification electric energy meter viewing area includes display screen, luminous tube, button.
This utility model current terminal mouth includes input terminal and the lead-out terminal of A, B, C three-phase current, and voltage link port includes input terminal and the zero line input terminal of A, B, C three-phase voltage.
The intelligent electric energy meter on-site calibrator of the present utility model has the advantage that
1) bucking coil is passed through, the iron core giving verification electric energy meter injects a reverse magnetic flux, make verification electric energy meter in magnetic core will not be saturated, therefore can accurately measure exists in DC component situation in load, improve the certainty of measurement of verification electric energy meter, solve the practical problem such as metering difference existed between client's electric energy meter at the scene of being arranged on and metering summary table;
2) meritorious, the idle pulse signal sampling control signal as electric energy meter on-site calibrator of verification electric energy meter is adopted, realize electric energy meter on-site calibrator to electric current, voltage, frequency sampling and verification electric energy meter synchronize, improve the checking precision of tester;
3) there is the measurement function of site environment temperature and humidity, checking data can be carried out the correction of temperature and humidity influence amount;
4) adopt three-phase electric energy list structure form, electric current, voltage link mode, and mounting means is identical with three-phase electric energy meter, it is simple to in-site installation and long-time use;
5) adopting double-display screen technology, upper screen is for showing the work of tester, measurement data, and lower screen is for showing the measurement data of verified electric energy meter, and digital independent is directly perceived, facilitates contrast and the checking of data;
6) there is the RS485 communication interface of master station mode, it is possible to read the measurement data of verified electric energy meter and parameter is set, it is simple to detecting electric parameters and the function of verified electric energy meter. There is communication module socket, it is possible to insert wireless communication module or carrier communication module, it is achieved remotely monitoring and verification.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is the theory diagram of the intelligent electric energy meter on-site calibrator of the present utility model;
Fig. 2 is alternating current-direct current testing circuit schematic diagram of the present utility model;
Fig. 3 is data processing module circuit connection diagram of the present utility model.
Wherein: verification electric energy meter 1, data processing module 2, communication module 3, sampling module 4, power module 5.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, this utility model is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
In description of the present utility model, it will be appreciated that, term " radially ", " axially ", " on ", D score, " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model. In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " setting ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly;Can be joined directly together, it is also possible to be indirectly connected to by intermediary. For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in this utility model as the case may be.
As Figure 1-3, the intelligent electric energy meter on-site calibrator of the present embodiment includes verification electric energy meter 1, verification electric energy meter 1 is provided with the alternating current-direct current testing circuit for detecting the ac and dc current by verifying electric energy meter 1 and DC offset circuit, DC offset circuit is for offsetting the magnetic flux that verification electric energy meter 1 DC component produces, wherein, DC offset circuit is the DC compensation coil being located in verification electric energy meter 1, and DC compensation coil injects a reverse magnetic flux to the iron core of verification electric energy meter 1. By bucking coil, inject a reverse magnetic flux to the iron core of verification electric energy meter 1 so that the magnetic core in verification electric energy meter 1 will not be saturated, therefore can accurately measure and exist in DC component situation in load, improves the certainty of measurement of verification electric energy meter 1.
Data processing module 2 in the present embodiment is detected the single-chip microcomputer of signal, memorizer and clock chip by reception process verification electric energy meter 1 and constitutes, memorizer is connected with single-chip microcomputer respectively with clock chip, the sequential that clock chip is required for producing single-chip microcomputer work, single-chip microcomputer input is connected to button, and the outfan of single-chip microcomputer is connected to luminous tube and display screen.
Communication module 3 in the present embodiment is provided with infrared communication circuit and two groups of RS485 telecommunication circuits, and the input of infrared communication circuit is connected with the COM1 of single-chip microcomputer, and the input of 2 groups of RS485 telecommunication circuits is connected with the COM1 of single-chip microcomputer.
Sampling module 4 in the present embodiment is provided with current sampling circuit, voltage sampling circuit, pulse signal sampling circuit, temperature sampling circuit and humidity sample circuit, in sampling module 4, the outfan of sample circuit is connected with single-chip microcomputer input, wherein, current signal on current terminal mouth is sampled by current sampling circuit, voltage signal on voltage link port is sampled by voltage sampling circuit, pulse signal sampling circuit is to the pulse signal on meritorious pulse signal input terminal on verification electric energy meter 1 Wiring port, pulse signal on idle pulse signal input terminal and the pulse signal on multifunctional pulse signal input terminal are sampled, the temperature of environment is sampled by temperature sampling circuit, the humidity of environment is sampled by humidity sample circuit, there is the measurement function of site environment temperature and humidity, checking data can be carried out the correction of temperature and humidity influence amount.
Tester in the present embodiment also has shell, tester viewing area, verification electric energy meter viewing area, tester Wiring port, verification connection box of electric energy meter port, current terminal mouth, voltage link port and communication module 3 socket, specifically, tester viewing area includes display screen, luminous tube, communication window, button, and verification electric energy meter 1 viewing area includes display screen, luminous tube, button. Tester Wiring port includes meritorious pulse signal output end pulse signal output end, idle, multifunctional pulse signal output terminal, RS485 Interface Terminal. Verification electric energy meter 1 Wiring port includes meritorious pulse signal input terminal pulse signal input terminal, idle, multifunctional pulse signal input terminal, RS485 Interface Terminal. The communication window of the outfan docking tester viewing area of infrared communication circuit, the outfan of 2 groups of RS485 telecommunication circuits is connected with the RS485 Interface Terminal of tester Wiring port and tester Wiring port respectively, and the communication input of communication module socket is connected with the COM1 of single-chip microcomputer.
Adopt meritorious, the idle pulse signal sampling control signal as electric energy meter on-site calibrator of verification electric energy meter 1, it is achieved electric current, voltage, the sampling of frequency and verification electric energy meter 1 are synchronized by electric energy meter on-site calibrator, improve the checking precision of tester.
There is the RS485 communication interface of master station mode, it is possible to read the measurement data of verified electric energy meter 1 and parameter is set, it is simple to detecting electric parameters and the function of verified electric energy meter 1. There is communication module 3 socket, it is possible to insert wireless communication module 3 or carrier communication module 3, it is achieved remotely monitoring and verification.
Current terminal mouth in the present embodiment includes input terminal and the lead-out terminal of A, B, C three-phase current, voltage link port includes input terminal and the zero line input terminal of A, B, C three-phase voltage, adopt three-phase electric energy list structure form, electric current, voltage link mode, and mounting means is identical with three-phase electric energy meter, it is simple to in-site installation and long-time use.
The intelligent electric energy meter on-site calibrator of the present embodiment also includes power module 5, and power module 5 is made up of switching power circuit, back-up battery circuit, provides power supply to respectively sampling module 4, data processing module 2, communication module 3.
Should be appreciated that specific embodiment described above is only for explaining this utility model, be not used to limit this utility model. The apparent change extended out by spirit of the present utility model or variation are still among protection domain of the present utility model.
Claims (9)
1. a intelligent electric energy meter on-site calibrator, it is characterised in that including:
Verification electric energy meter (1), described verification electric energy meter (1) is provided with for detection by verifying alternating current-direct current testing circuit and the DC offset circuit of the ac and dc current of electric energy meter (1), and described DC offset circuit is used for offsetting the magnetic flux that verification electric energy meter (1) DC component produces;
Data processing module (2), described data processing module (2) is processed verification electric energy meter (1) the detection single-chip microcomputer of signal, memorizer and clock chip and constitutes by reception;
Communication module (3), described communication module (3) is provided with infrared communication circuit and two groups of RS485 telecommunication circuits, the input of infrared communication circuit is connected with the COM1 of single-chip microcomputer, and the input of 2 groups of RS485 telecommunication circuits is connected with the COM1 of single-chip microcomputer;
Sampling module (4), described sampling module (4) is provided with current sampling circuit, voltage sampling circuit, pulse signal sampling circuit, temperature sampling circuit and humidity sample circuit, and in described sampling module (4), the outfan of sample circuit is connected with single-chip microcomputer input.
2. the intelligent electric energy meter on-site calibrator according to claim 1, it is characterized in that, described DC offset circuit is the DC compensation coil being located in verification electric energy meter (1), and described DC compensation coil injects a reverse magnetic flux to the iron core of verification electric energy meter (1).
3. the intelligent electric energy meter on-site calibrator according to claim 1, it is characterized in that, described memorizer is connected with single-chip microcomputer respectively with clock chip, the sequential that described clock chip is required for producing single-chip microcomputer work, described single-chip microcomputer input is connected to button, and the outfan of single-chip microcomputer is connected to luminous tube and display screen.
4. the intelligent electric energy meter on-site calibrator according to claim 1, it is characterized in that, current signal on current terminal mouth is sampled by described current sampling circuit, voltage signal on voltage link port is sampled by voltage sampling circuit, pulse signal sampling circuit is to the pulse signal on meritorious pulse signal input terminal on verification connection box of electric energy meter port, pulse signal on idle pulse signal input terminal and the pulse signal on multifunctional pulse signal input terminal are sampled, the temperature of environment is sampled by temperature sampling circuit, the humidity of environment is sampled by humidity sample circuit.
5. the intelligent electric energy meter on-site calibrator according to claim 1, it is characterized in that, described tester also has shell, tester viewing area, verification electric energy meter viewing area, tester Wiring port, verification connection box of electric energy meter port, current terminal mouth, voltage link port and communication module socket.
6. the intelligent electric energy meter on-site calibrator according to claim 5, it is characterized in that, the communication window of the outfan docking tester viewing area of described infrared communication circuit, the outfan of 2 groups of RS485 telecommunication circuits is connected with the RS485 Interface Terminal of tester Wiring port and tester Wiring port respectively, and the communication input of communication module socket is connected with the COM1 of single-chip microcomputer.
7. the intelligent electric energy meter on-site calibrator according to claim 6, it is characterized in that, described tester Wiring port includes meritorious pulse signal output end pulse signal output end, idle, multifunctional pulse signal output terminal and RS485 Interface Terminal, and described verification connection box of electric energy meter port includes merit pulse signal input terminal pulse signal input terminal, idle, multifunctional pulse signal input terminal and RS485 Interface Terminal.
8. the intelligent electric energy meter on-site calibrator according to claim 7, it is characterised in that described tester viewing area includes display screen, luminous tube, communication window, button, and described verification electric energy meter viewing area includes display screen, luminous tube, button.
9. the intelligent electric energy meter on-site calibrator according to claim 8, it is characterized in that, current terminal mouth includes input terminal and the lead-out terminal of A, B, C three-phase current, and voltage link port includes input terminal and the zero line input terminal of A, B, C three-phase voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521112654.XU CN205301570U (en) | 2015-12-28 | 2015-12-28 | On --spot check gauge of intelligent electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521112654.XU CN205301570U (en) | 2015-12-28 | 2015-12-28 | On --spot check gauge of intelligent electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301570U true CN205301570U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521112654.XU Expired - Fee Related CN205301570U (en) | 2015-12-28 | 2015-12-28 | On --spot check gauge of intelligent electric energy meter |
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| Country | Link |
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| CN (1) | CN205301570U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008344A (en) * | 2018-01-19 | 2018-05-08 | 陈劲游 | Buckle formula three-phase four-wire electric energy meter on-spot check gauge |
| CN108152785A (en) * | 2018-01-19 | 2018-06-12 | 陈劲游 | Buckle type three-phase three-wire electric energy meter on-site calibration instrument |
| CN112255584A (en) * | 2020-09-04 | 2021-01-22 | 国网冀北电力有限公司计量中心 | Remote online calibration method for intelligent electric energy meter |
-
2015
- 2015-12-28 CN CN201521112654.XU patent/CN205301570U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008344A (en) * | 2018-01-19 | 2018-05-08 | 陈劲游 | Buckle formula three-phase four-wire electric energy meter on-spot check gauge |
| CN108152785A (en) * | 2018-01-19 | 2018-06-12 | 陈劲游 | Buckle type three-phase three-wire electric energy meter on-site calibration instrument |
| CN112255584A (en) * | 2020-09-04 | 2021-01-22 | 国网冀北电力有限公司计量中心 | Remote online calibration method for intelligent electric energy meter |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20201228 |