CN206684287U - Electric energy meter error automatic detection device - Google Patents
Electric energy meter error automatic detection device Download PDFInfo
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- CN206684287U CN206684287U CN201720050494.3U CN201720050494U CN206684287U CN 206684287 U CN206684287 U CN 206684287U CN 201720050494 U CN201720050494 U CN 201720050494U CN 206684287 U CN206684287 U CN 206684287U
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- energy meter
- electric energy
- electric capacity
- electric
- decoupling network
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Abstract
The utility model discloses a kind of electric energy meter error automatic detection device, including power source and light pulse signal collector, also include the voltage decoupling network and electric current decoupling network being connected with power source, the master control set being connected with light pulse signal collector, the voltage decoupling network and electric current decoupling network are in parallel, and the input of voltage decoupling network and electric current decoupling network connects power source, output end is connected with tested electric energy meter, and tested electric energy meter is connected with light pulse signal collector.The utility model gives tested electric energy meter to power by power source through overvoltage decoupling network and electric current decoupling network, the error of electric energy meter is calculated by gathering the cycle of tested electric energy meter light pulse signal, error of the electric energy meter in EMC test can be detected reliably, stably, exactly, solve the problem that electric energy meter error is detected in the case where complicated strong electromagnetic harasses environment.
Description
Technical field
It the utility model is related to electric energy meter detection field, more particularly to a kind of electric energy meter error automatic detection device.
Background technology
Because the calibrator for watt-hour meter of in the market does not consider the Electro Magnetic Compatibility of device in itself, therefore, device mostly
Interference free performance is very poor.In the EMC test of electric energy meter, it can not often be normally carried out detecting using such verifying attachment
Or influence the accuracy of electric energy meter error detection.
In addition, the alternative recommended as some electric energy meter product standards, some mechanisms and manufacturer are simultaneous in electromagnetism
Hold in experiment, the light pulse quantity sent using electric energy meter when manually meter reads application with not applying electromagnetic disturbance respectively is simultaneously counted accordingly
The method for calculating the electric energy meter degree of accuracy, this method, which exists, to be expended the time, is easily introduced human error while can only interpretation mean error
Defect.
Utility model content
The purpose of this utility model is to provide a kind of electric energy meter error automatic detection device, can reliably, stably, accurately
Detect error of the electric energy meter in EMC test in ground.
To realize the purpose, there is provided a kind of electric energy meter error automatic detection device, including power source and light pulse signal
Collector, in addition to the voltage decoupling network and electric current decoupling network being connected with power source, are connected with light pulse signal collector
Master control set, the voltage decoupling network and electric current decoupling network are in parallel, and voltage decoupling network and electric current decoupling network
Input connect power source, output end is connected with tested electric energy meter, and tested electric energy meter is connected with light pulse signal collector.
Preferably, the light pulse signal collector includes photoelectric signal transforming module, connects with photoelectric signal transforming module
The first MCU master controls connect, the first wireless transport module being connected with the first MCU master controls, the photoelectric signal transforming module and quilt
Survey electric energy meter connection.
Preferably, the master control set includes the second wireless transport module, second be connected with the second wireless transport module
MCU master controls, the TFT-LCD touch display modules being connected with the 2nd MCU master controls, second wireless transport module and first wireless
Transport module wireless connection.
Preferably, the photoelectric signal transforming module is provided with is converted into electricity by the optical signal that the tested electric energy meter of reception exports
The photistor and voltage comparator of signal.
Preferably, the voltage decoupling network and electric current decoupling network are EMI power filter.
Preferably, the first electric capacity and the X electric capacity that the 5th electric capacity is 0.22uF in the voltage decoupling network, the second electric capacity,
3rd electric capacity, the 6th electric capacity and the 7th electric capacity are 4700pF Y capacitance, and the first inductance is 1mH common mode inductance, and the second inductance is
10mH common mode inductance.
Preferably, the 8th electric capacity and the X electric capacity that the 11st electric capacity is 0.22uF, the 9th electricity in the electric current decoupling network
Appearance, the tenth electric capacity, the 12nd electric capacity and the 13rd electric capacity are 4700pF Y capacitance, and the 3rd inductance is 1mH common mode inductance, the
Four inductance are 10mH common mode inductance.
Compared with prior art, its advantage is the utility model：
The utility model gives tested electric energy meter to power by power source through overvoltage decoupling network and electric current decoupling network, leads to
Cross and gather the cycle for being tested electric energy meter light pulse signal to calculate the error of electric energy meter, can detect reliably, stably, exactly electric
Error of the energy table in EMC test, solves the problem that electric energy meter error is detected in the case where complicated strong electromagnetic harasses environment.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is light pulse signal collector structured flowchart in the utility model；
Fig. 3 is master control set structured flowchart in the utility model；
Fig. 4 is voltage decoupling network structural representation；
Fig. 5 is electric current decoupling network structural representation.
Embodiment
With reference to embodiment, the utility model will be further described, but does not form to of the present utility model any
Limitation, the modification of any limited number of time made in the utility model claims scope, still in claim of the present utility model
In the range of.
As shown in Figures 1 to 5, the utility model provides a kind of electric energy meter error automatic detection device, including power source 3
With light pulse signal collector 2, in addition to the voltage decoupling network 4 and electric current decoupling network 5 being connected with power source 3, with light arteries and veins
The master control set 1 of the connection of signal picker 2 is rushed, voltage decoupling network 4 and electric current decoupling network 5 are in parallel, and voltage decoupling net
The input of network 4 and electric current decoupling network 5 connects power source 3, and output end is connected with tested electric energy meter 6, be tested electric energy meter 6 with
Light pulse signal collector 2 connects.
Light pulse signal collector 2 includes photoelectric signal transforming module 7, first be connected with photoelectric signal transforming module 7
MCU master controls 8, the first wireless transport module 9 being connected with the first MCU master controls 8, photoelectric signal transforming module 7 and tested electric energy meter
6 connections.
Master control set 1 includes the second wireless transport module 10, the 2nd MCU master being connected with the second wireless transport module 10
Control 11, the TFT-LCD touch display modules 12 being connected with the 2nd MCU master controls 11, second wireless transport module 10 and first
The wireless connection of wireless transport module 9.
In the present embodiment, master control set 1 calculates the number of tested electric energy meter light pulse signal, calculates tested electric energy meter
In the light pulse cycle, maximum relative error value of the tested electric energy meter in the case where having interference and noiseless situation is calculated, and retain maximum
Value.Tested electric energy meter 6 has light pulse output end for red LED.
Photoelectric signal transforming module 7 is provided with the light that the optical signal that the tested electric energy meter 6 of reception exports is converted into electric signal
Quick transistor and voltage comparator.The receiving terminal photoelectric signal transforming module 7 of light pulse collector 2 passes through photistor and voltage
The optical signal of the tested light pulse output signal of electric energy meter 6 is converted into electric signal by comparator, is transmitted further to the first MCU master controls 8 and is entered
Row processing.First wireless transport module 9 and the wireless connection of the second wireless transport module 10.
In the present embodiment, the precision of power source 3 is 0.05 grade, exports stable voltage and current.
Voltage decoupling network 4 and electric current decoupling network 5 are EMI power filter.Voltage decoupling network 4 and electric current decoupling net
In network 5 first electric capacity C1 and the 5th electric capacity C5 be 0.22uF X electric capacity, the second electric capacity C2, the 3rd electric capacity C3, the 6th electric capacity C6 and
7th electric capacity C7 is 4700pF Y capacitance, and the first inductance L1 is 1mH common mode inductance, and the common mode that the second inductance L2 is 10mH is electric
Sense.In electric current decoupling network 5 the 8th electric capacity C8 and the 11st electric capacity C11 be 0.22uF X electric capacity, the 9th electric capacity C9, the tenth electricity
Holding the Y capacitance that C10, the 12nd electric capacity C12 and the 13rd electric capacity C13 are 4700pF, the 3rd inductance L3 is 1mH common mode inductance,
4th inductance L4 is 10mH common mode inductance.
In the present embodiment, voltage decoupling network 4 and electric current decoupling network 5 are secondary power supply filter network, and voltage is gone
First common mode inductance L1 and the second electric capacity C2, the 3rd electric capacity C3 are used for filtering common mode interference signal, the first electric capacity C1 in coupling network 4
It is used to filter out DM EMI signal, the second common mode inductance L2 and the 6th electric capacity C6, the 7th electricity with the first common mode inductance L1 leakage inductance
Hold C7 and be used for filtering common mode interference signal, the 5th electric capacity C5 and the second common mode inductance L2 leakage inductance, which are used to filtering out DM EMI, to be believed
Number., just can be effectively by electromagnetic interference filtering in potential circuit by such combination.In electric current decoupling network 4
Three common mode inductance L3 and the 9th electric capacity C9, the tenth electric capacity C10 are used for filtering common mode interference signal, and the 8th electric capacity C8 and the 3rd is common
Mould inductance L3 leakage inductance is used to filter out DM EMI signal, the 4th common mode inductance L4 and the 12nd electric capacity C12, the 13rd electric capacity
C13 is used for filtering common mode interference signal, and the 11st electric capacity C11 and the 4th common mode inductance L4 leakage inductance are used to filter out DM EMI letter
Number., just can be effectively by electromagnetic interference filtering in current circuit by such combination.
Wherein, the filtering requirements being chosen to be in the utility model of each component parameters size are determined, net is decoupled in voltage
In network, the first electric capacity C1 and the 5th electric capacity C5 selection, selected by a large amount of actual tests, select filtering during 0.22uf to cut
Only frequency is optimal, if selection electric capacity is a little big, filter cutoff frequency reduces, if selection electric capacity is a little bit smaller, filtering is cut
Only frequency increases.Because the type of interference signal is different, their frequency spectrum is also different.If the small filter cutoff frequency of selection
Rate, then the interference signal of some relatively high dot frequencies filter out, if the big filter cutoff frequency of selection, some are relative
The interference signal of a low dot frequency filters out, so the first electric capacity C1 and the 5th electric capacity C5 selections 0.22uf is the most suitable.Together
Reason, in electric current decoupling network, the 8th electric capacity C8 and the 11st electric capacity C11 selection are also such.Therefore, institute according to the actual requirements
Choosing each element can be optimal in the utility model carry out secondary power supply filtering, filtering the more general filter network of frequency range it is wide, have
Splendid high/low frequency interference suppressioning characteristic.
In the present embodiment, master control set 1 was calculated the cycle for being tested the light pulse output signal of electric energy meter 6：During detection,
Power source 3 exports stable voltage and current by voltage decoupling network 4 and electric current decoupling network 5, is tested electric energy meter 6 and detects work(
The voltage and current that rate source 3 exports, and optical signal is exported by light pulse output end, light pulse collector 2 passes through optical telecommunications
The optical signal that the tested electric energy meter 6 received exports is converted into electric signal and is sent to the first MCU master controls 8 by number modular converter 7 to be entered
After row processing, the second wireless transport module 10 of master control set 1, the second nothing are wirelessly transmitted to by the first wireless transport module 9
The signal received is transferred to the 2nd MCU master controls 11 and handled by line transport module 10, now master control set 1 obtain for quilt
The value surveyed under the noiseless situation of electric energy meter 6, records value N1 now.Electromagnetic compatibility detection device is then turned on, to being tested electric energy
Table 6 applies interference, and tested electric energy meter 6 is in the case of electromagnetic interference, and now, master control set 1 receives the light arteries and veins of tested electric energy meter 6
Output signal is rushed, is exactly the value N2 under noisy condition.Master control set 1 calculates the relative error E=of tested electric energy meter simultaneously
(N2-N1) * 100/N1, the relative error Emax of maximum is retained.Display processing knot is carried out by TFT-LCD touch display modules 12
Fruit.
It the above is only preferred embodiment of the present utility model, it should be pointed out that for those skilled in the art,
On the premise of not departing from the utility model structure, several modifications and improvements can also be made, these are new all without this practicality is influenceed
The effect and practical applicability that type is implemented.
Claims (7)
1. a kind of electric energy meter error automatic detection device, including power source (3) and light pulse signal collector (2), its feature exist
In：Also include the voltage decoupling network (4) and electric current decoupling network (5) being connected with power source (3), with light pulse signal collector
(2) master control set (1) of connection, the voltage decoupling network (4) and electric current decoupling network (5) are in parallel, and voltage decoupling net
The input of network (4) and electric current decoupling network (5) connects power source (3), and output end is connected with tested electric energy meter (6), is tested
Electric energy meter (6) is connected with light pulse signal collector (2).
A kind of 2. electric energy meter error automatic detection device according to claim 1, it is characterised in that：The light pulse signal
Collector (2) includes photoelectric signal transforming module (7), the first MCU master controls (8) being connected with photoelectric signal transforming module (7), with
The first wireless transport module (9) of first MCU master controls (8) connection, the photoelectric signal transforming module (7) and tested electric energy meter
(6) connect.
A kind of 3. electric energy meter error automatic detection device according to claim 1 or 2, it is characterised in that：The master control dress
Putting (1) includes the second wireless transport module (10), the 2nd MCU master controls (11) being connected with the second wireless transport module (10), with
The TFT-LCD touch display modules (12) of 2nd MCU master controls (11) connection, second wireless transport module (10) and the first nothing
Line transport module (9) wireless connection.
A kind of 4. electric energy meter error automatic detection device according to claim 2, it is characterised in that：The photosignal turns
Mold changing block (7) is provided with the photistor and voltage that the optical signal that the tested electric energy meter (6) of reception exports is converted into electric signal
Comparator.
A kind of 5. electric energy meter error automatic detection device according to claim 1, it is characterised in that：The voltage decouples net
Network (4) and electric current decoupling network (5) are EMI power filter.
A kind of 6. electric energy meter error automatic detection device according to claim 5, it is characterised in that：The voltage decouples net
The first electric capacity (C1) and the 5th electric capacity (C5) are 0.22uF X electric capacity in network (4), the second electric capacity (C2), the 3rd electric capacity (C3), the
Six electric capacity (C6) and the 7th electric capacity (C7) are 4700pF Y capacitance, and the first inductance (L1) is 1mH common mode inductance, the second inductance
(L2) common mode inductance for being 10mH.
A kind of 7. electric energy meter error automatic detection device according to claim 5, it is characterised in that：The electric current decouples net
8th electric capacity (C8) and the X electric capacity that the 11st electric capacity (C11) is 0.22uF, the 9th electric capacity (C9), the tenth electric capacity in network (5)
(C10), the 12nd electric capacity (C12) and the Y capacitance that the 13rd electric capacity (C13) is 4700pF, the 3rd inductance (L3) are 1mH common mode
Inductance, the 4th inductance (L4) are 10mH common mode inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050494.3U CN206684287U (en) | 2017-01-13 | 2017-01-13 | Electric energy meter error automatic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050494.3U CN206684287U (en) | 2017-01-13 | 2017-01-13 | Electric energy meter error automatic detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206684287U true CN206684287U (en) | 2017-11-28 |
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ID=60395840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720050494.3U Expired - Fee Related CN206684287U (en) | 2017-01-13 | 2017-01-13 | Electric energy meter error automatic detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206684287U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872922A (en) * | 2018-06-01 | 2018-11-23 | 杭州海兴电力科技股份有限公司 | Electromagnetic interference detection method, system and electromagnetic interference detector |
| CN110133346A (en) * | 2019-06-26 | 2019-08-16 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of connection structure reducing electric energy surface contact resistance |
| CN110943608A (en) * | 2018-09-21 | 2020-03-31 | 中车株洲电力机车研究所有限公司 | EMI filter for motor driver |
| CN113765364A (en) * | 2021-09-07 | 2021-12-07 | 北京精密机电控制设备研究所 | Parameter-adjustable-based EMI filter assembly |
-
2017
- 2017-01-13 CN CN201720050494.3U patent/CN206684287U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872922A (en) * | 2018-06-01 | 2018-11-23 | 杭州海兴电力科技股份有限公司 | Electromagnetic interference detection method, system and electromagnetic interference detector |
| CN110943608A (en) * | 2018-09-21 | 2020-03-31 | 中车株洲电力机车研究所有限公司 | EMI filter for motor driver |
| CN110133346A (en) * | 2019-06-26 | 2019-08-16 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of connection structure reducing electric energy surface contact resistance |
| CN110133346B (en) * | 2019-06-26 | 2024-01-26 | 广东省计量科学研究院（华南国家计量测试中心） | Connection structure for reducing contact resistance of electric energy meter |
| CN113765364A (en) * | 2021-09-07 | 2021-12-07 | 北京精密机电控制设备研究所 | Parameter-adjustable-based EMI filter assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171128 Termination date: 20200113 |