CN2876793Y - High accuracy electric energy meter using section type sampling - Google Patents
High accuracy electric energy meter using section type sampling Download PDFInfo
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- CN2876793Y CN2876793Y CN 200620006648 CN200620006648U CN2876793Y CN 2876793 Y CN2876793 Y CN 2876793Y CN 200620006648 CN200620006648 CN 200620006648 CN 200620006648 U CN200620006648 U CN 200620006648U CN 2876793 Y CN2876793 Y CN 2876793Y
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Abstract
The utility model relates to a high accuracy electric energy meter using section type sampling, which comprises an electronic type electric energy meter. A single-phase or three-phase current or voltage separately passes an over-current distributor or a voltage negative booster to generate a voltage signal, which is divided into a two ways or multiple ways after passing a signal processor and then transferred to AD respectively; the signal is then transferred to an MCU for processing after AD conversion. The advantages include: 1. use a plurality section of AD sampling to improve the sampling precision of the AD, enabling a wider sampling range of front end data and can be used for making a high precision electronic type electric energy meter of more multiples; 2. using section type AD sampling has a cost several-fold lower and a precision several-fold times and decades of times higher than that of a non-section type AD sampling; 3. as long as increasing the amount of divided sections, a wider measuring range will be possible while satisfying the precision and the accuracy. Therefore, the utility model has the advantages of wide measuring range, low cost and easy to extend.
Description
Technical field:
The utility model relates to the high-precision electric energy meter of a kind of employing block sampling voltage (electric current), belongs to electronic electric energy meter and makes the field.
Background technology:
Granted publication CN 2599592Y, title " electronic electric energy meter shunt ", this shunt is processed into the groove of the certain width and the degree of depth in the middle of two red copper input terminal plates that are connected together, in groove, put into solder flux, then the copper-manganese plate is put into groove, copper-manganese and red copper input terminal plate are tightly welded together by heating, pressurization.Become groove milling in red copper input terminal plate central longitudinal to milling continuous part at last, and form two input ends.On the copper-manganese plate, be provided with the sampling joint, on input terminal plate, be provided with earth connection point.But this shunt also is not used in the sampling of electric current.
Summary of the invention:
Purpose of design: design the high-precision electric energy meter of a plurality of AD block sampling of a kind of usefulness signal as the data-switching of electric energy meter signal.
Design proposal: in order to realize above-mentioned purpose of design, improve the sampling precision of simulated data, the utility model uses the data transfer device of a plurality of AD block sampling signals as the electric energy meter signal, is principal character of the present utility model.Can show the manufacturing field in electronic type, good Yu the bad topmost technical parameter of measurement electronic electric energy meter quality is: the measuring accuracy of electronic electric energy meter.Can the measuring accuracy that improve electronic electric energy meter effectively be to be related to one of key that can electronic electric energy meter be approved by market, but the key that improves the electronic electric energy meter measuring accuracy is the sampling precision of voltage (electric current).If solved the not sampling precision of the voltage of electronic electric energy meter (electric current), also just can't realize the accurate measurement of electronic electric energy meter at all.Yet the data-switching of single AD sampled signal as the electric energy meter signal all adopted in the voltage of the electronic electric energy meter of purpose (electric current) sampling, and its precision more originally can't improve, and can't be approved by market.1. the utility model is divided into multistage AD sampling with adopting voltage (electric current) by signal processor (signal amplifies or dwindles), with the sampling precision of raising AD, thereby makes the scope of front end data sampling wideer, can make the table of more multiples.2. use non-sectional type AD sampling, then the precision of desired AD is high more a lot of than the precision of the AD that uses sectional type AD sampling, and will consider the relation of sampling rate, so the price of AD relatively can be high doubly more a lot of than using the AD that uses in the fractional sampler like this.3. aspect controlled expansion,, just can make electric energy meter when satisfying precision and accuracy, make the measurement range higher as long as increase the quantity of segmentation.Thereby, use sectional type AD sampling in electric energy meter is used, to have good prospect.Its technical scheme: the high-precision electric energy meter that adopts fractional sampler, it comprises electronic electric energy meter, single-phase or three-phase current or voltage obtain the voltage letter by current diverter or voltage drop depressor respectively, the signal output part of current diverter or voltage drop depressor connects the signal input part of signal processor, the signal input part of signal processor is divided into two the road or multichannel and be connected with the signal input part of AD respectively and after the AD data-switching, the signal output part of AD connects the signal input part of MCU, and MUC handles data.
The utility model advantage is: the one, by being divided into multistage AD sampling, can further improve the sampling precision of AD, make the scope of front end data sampling wideer, can make the high-precision electronic formula electric energy meter of more multiples, if, can make 1.5 (30) A electric energy meters in 1%--2000% (20Ib) scope, can both satisfy and be better than the requirement of the 0.2s grade standard in " GB/T 17883-19990.2S level exchanges active electric energy meter with 0.5S level state type " standard by segmentation AD sampling; The 2nd, on cost, if adopt sectional type AD sampling, its cost improves several times even tens times than the low several times of price, the precision of non-sectional type AD; The 3rd, aspect controlled expansion,, just can make electric energy meter when satisfying precision and accuracy as long as increase the quantity of segmentation, make that to measure range wideer, so the characteristics that have wide-range, low cost, are easy to expand.
Description of drawings:
Fig. 1 is the local circuit block diagram of first kind of embodiment that adopts the high-precision electric energy meter of fractional sampler.
Fig. 2 is the local circuit block diagram of second kind of embodiment that adopts the high-precision electric energy meter of fractional sampler.
Embodiment:
Embodiment 1: with reference to accompanying drawing 1.Adopt the high-precision electric energy meter of fractional sampler, it comprises electronic electric energy meter, and the manufacture craft of electronic electric energy meter is a prior art, is not described herein at this.(current diverter is meant current transformer or manganese copper diverter and is prior art by current diverter respectively for single-phase or three-phase current or voltage, be not described herein at this) or the voltage drop depressor (the voltage drop depressor is meant voltage transformer (VT) or resistor network and is prior art, be not described herein at this) obtain voltage letter, the signal output part of current diverter or voltage drop depressor connects the signal input part of signal processor (signal amplifies or dwindles), the signal input part of signal processor is divided into two the road or multichannel and be connected with the signal input part of AD respectively and after the AD data-switching, the signal output part of AD connects the signal input part of MCU, and MUC handles data.
Embodiment 2: with reference to accompanying drawing 2.On the basis of embodiment 1, be example mutually with three-phase and four-line circuit A, the A phase current signal produces a voltage signal V1 by modes such as current transformer or manganese copper diverters, being in proportion of this voltage signal V1 and electric current; Simultaneously the voltage of A phase obtains voltage signal V2 after by voltage transformer (VT) or resistor network step-down, being in proportion of this voltage signal V2 and voltage.V1 and V2 signal are by signal processor, and demultiplexing is delivered to a plurality of AD, and after the AD data-switching, MCU handles data again.As Fig. 1: divide 2 sections with current return, use 2 road AD to be example, current signal obtains corresponding voltage signal V1 by processing, and voltage signal V1 is by after signal processor I1 amplification or dwindling, by AD data processing conversion I1, become analog signal conversion digital signal to handle to MCU then; After voltage signal V1 amplifies by signal processor I2 or dwindles,, handle to MCU after analog signal conversion become digital signal by AD data-switching I2.Handle by MCU, can obtain corresponding current data.Certainly, if in order to improve precision, can being divided into more multistage, we handle.
Equally, B phase AD ALT-CH alternate channel, C phase AD ALT-CH alternate channel also can obtain corresponding electric current, information of voltage by the disposal route that is similar to the A phase.
What need understand is: though the foregoing description is to the utility model detailed explanation of contrasting; but these explanations are just to simple declaration of the present utility model; rather than to restriction of the present utility model; any innovation and creation that do not exceed in the utility model connotation all fall in the protection domain of the present utility model.
Claims (5)
1, a kind of high-precision electric energy meter that adopts fractional sampler, it comprises electronic electric energy meter, it is characterized in that: single-phase or three-phase current or voltage obtain the voltage letter by current diverter or voltage drop depressor respectively, the signal output part of current diverter or voltage drop depressor connects the signal input part of signal processor, the signal input part of signal processor is divided into two the road or multichannel and be connected with the signal input part of AD respectively and after the AD data-switching, the signal output part of AD connects the signal input part of MCU, and MUC handles data.
2, the high-precision electric energy meter of employing fractional sampler according to claim 1 is characterized in that: single-phase or three-phase current produces being in proportion of voltage signal and voltage signal and electric current by current diverter.
3, the high-precision electric energy meter of employing fractional sampler according to claim 1 is characterized in that: single-phase or three-phase voltage produces being in proportion of voltage signal and voltage signal and voltage by the voltage shunt.
4, the high-precision electric energy meter of employing fractional sampler according to claim 1 and 2 is characterized in that: current diverter is meant current transformer or manganese copper diverter.
5, the high-precision electric energy meter of employing fractional sampler according to claim 1 and 2 is characterized in that: the voltage drop depressor is meant voltage transformer (VT) or resistor network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006648 CN2876793Y (en) | 2006-04-03 | 2006-04-03 | High accuracy electric energy meter using section type sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006648 CN2876793Y (en) | 2006-04-03 | 2006-04-03 | High accuracy electric energy meter using section type sampling |
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| Publication Number | Publication Date |
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| CN2876793Y true CN2876793Y (en) | 2007-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620006648 Expired - Lifetime CN2876793Y (en) | 2006-04-03 | 2006-04-03 | High accuracy electric energy meter using section type sampling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116794A (en) * | 2010-12-06 | 2011-07-06 | 广东雅达电子股份有限公司 | Metering method of single-phase electric energy meter with wide range |
| CN102353836A (en) * | 2011-07-15 | 2012-02-15 | 珠海中慧微电子有限公司 | Method for dynamically adjusting current channel gain of wide-range electric energy meter |
| CN102565528A (en) * | 2012-03-13 | 2012-07-11 | 钜泉光电科技(上海)股份有限公司 | Electric energy meter |
| CN102749489A (en) * | 2011-04-20 | 2012-10-24 | 北京德威特继保自动化科技股份有限公司 | Signal sampling device and method |
| CN103197138A (en) * | 2013-02-22 | 2013-07-10 | 王金泽 | Intelligent electric meter with function of detecting power supply reliability and voltage qualified rate and detecting method thereof |
| CN116593769A (en) * | 2023-07-17 | 2023-08-15 | 烟台东方威思顿电气有限公司 | High-precision electric energy calculation method with wide dynamic range |
-
2006
- 2006-04-03 CN CN 200620006648 patent/CN2876793Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116794A (en) * | 2010-12-06 | 2011-07-06 | 广东雅达电子股份有限公司 | Metering method of single-phase electric energy meter with wide range |
| CN102749489A (en) * | 2011-04-20 | 2012-10-24 | 北京德威特继保自动化科技股份有限公司 | Signal sampling device and method |
| CN102353836A (en) * | 2011-07-15 | 2012-02-15 | 珠海中慧微电子有限公司 | Method for dynamically adjusting current channel gain of wide-range electric energy meter |
| CN102353836B (en) * | 2011-07-15 | 2014-09-10 | 珠海中慧微电子有限公司 | Method for dynamically adjusting current channel gain of wide-range electric energy meter |
| CN102565528A (en) * | 2012-03-13 | 2012-07-11 | 钜泉光电科技(上海)股份有限公司 | Electric energy meter |
| CN102565528B (en) * | 2012-03-13 | 2014-04-16 | 钜泉光电科技(上海)股份有限公司 | Electric energy meter |
| CN103197138A (en) * | 2013-02-22 | 2013-07-10 | 王金泽 | Intelligent electric meter with function of detecting power supply reliability and voltage qualified rate and detecting method thereof |
| CN103197138B (en) * | 2013-02-22 | 2015-09-23 | 王金泽 | A kind of intelligent electric meter and monitoring method with power supply reliability and rate of qualified voltage monitoring function |
| CN116593769A (en) * | 2023-07-17 | 2023-08-15 | 烟台东方威思顿电气有限公司 | High-precision electric energy calculation method with wide dynamic range |
| CN116593769B (en) * | 2023-07-17 | 2023-10-27 | 烟台东方威思顿电气有限公司 | High-precision electric energy calculation method with wide dynamic range |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU PAX-HUALONG ELECTRONIC TECHNOLOGY CO., LT Free format text: FORMER NAME OR ADDRESS: HUALONG ELECTRONIC TECHNOLOGY CO., LTD., HANGZHOU |
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| CP03 | Change of name, title or address |
Address after: 310018 investment center building, No. 14, 17 street, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: Hangzhou Baifu Hualong Electronic Technology Co., Ltd. Address before: 310018, No. 12, No. 15, Hangzhou economic and Technological Development Zone (Xiasha), Zhejiang, Hangzhou Patentee before: Hualong Electronic Technology Co., Ltd., Hangzhou |
|
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU BAIFU ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME OR ADDRESS: HANGZHOU PAX-HUALONG ELECTRONIC TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Investment center building, No. 14, 17 street, Hangzhou economic and Technological Development Zone, Zhejiang, Hangzhou Province, China: 310018 Patentee after: Hangzhou PAX Electronic Technology Co., Ltd. Address before: Investment center building, No. 14, 17 street, Hangzhou economic and Technological Development Zone, Zhejiang, Hangzhou Province, China: 310018 Patentee before: Hangzhou Baifu Hualong Electronic Technology Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 310018 No. 12, No. 500, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang Patentee after: Hangzhou PAX Electronic Technology Co., Ltd. Address before: 310018 investment center building, No. 14, 17 street, Hangzhou economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: Hangzhou PAX Electronic Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20070307 |
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| EXPY | Termination of patent right or utility model |