CN2921840Y - Single-phase antistealing electricity electric energy meter - Google Patents
Single-phase antistealing electricity electric energy meter Download PDFInfo
- Publication number
- CN2921840Y CN2921840Y CN 200620006649 CN200620006649U CN2921840Y CN 2921840 Y CN2921840 Y CN 2921840Y CN 200620006649 CN200620006649 CN 200620006649 CN 200620006649 U CN200620006649 U CN 200620006649U CN 2921840 Y CN2921840 Y CN 2921840Y
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- electric energy
- energy meter
- computation chip
- live wire
- zero line
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Abstract
The utility model relates to a single-phase anti-stealing electricity electric energy meter, which comprises an electric energy meter. The output ends of the live wire and naught wire of the electric energy meter are connected with signal input ends of a manganin current divider respectively. The signal output ends of the manganin current divider are connected with signal output ends of the live wire measurement chip and the naught wire measurement chip respectively. The signal output ends of the live wire measurement chip and the naught wire measurement chip are connected with signal output ends of MCU respectively. Advantages of the utility model are that: I) electricity stolen conditions can be configured as demanded due to the adoption of dual measurement chips to realize the function of a single-phase anti-stealing electricity electric energy meter, utilization of shunt for sampling current signals and treatment of dual pulse via MCU; II) without strong external magnetic disturbance, the utility model ensures the measurement accuracy while loading current has a DC component.
Description
Technical field:
The utility model relates to a kind of electrical energy meter anti-theft electricity circuit and electric energy meter thereof, belongs to electric energy meter and makes the field.
Background technology:
The present single-phase anti-electricity-theft electric energy meter that uses, design proposal is to use special anti-electricity-theft computation chip such as ADE7751 etc., current sample uses two current transformers or manganese copper diverter of a current transformer, the limitation of this scheme is: the one, when the difference of live wire electric current and neutral line current is judged to be stealing greater than 12.5% the time, metering circuit switches to the big Na Yilu of current value, and this difference can not be set according to user's request; The 2nd, because of making Current Transformer, be subjected to outside strong magnetic interference easily as the current sample element, when having DC component, load current can not guarantee the accuracy of measuring.
Summary of the invention:
Purpose of design: avoid the weak point in the background technology, design the single-phase anti-electricity-theft electric energy meter of two measuring elements of a kind of employing.
Design proposal: in order to realize above-mentioned purpose of design, on the structural design of circuit, adopt two common computation chips (as ADE7755) and carry out current sample by shunt (manganese copper diverter), use MCU to realize the processing of two-way pulse, purpose is to be provided with the stealing decision condition, not influenced by the external magnetic field, be not subjected to the influence of DC component in the electric current, its anti-electricity-theft spirit is high, effective.Its technical scheme: single-phase anti-electricity-theft electric energy meter, it comprises electric energy meter, the live wire of electric energy meter and zero line input end connect the signal input part of manganese copper diverter respectively, start to exchange fire the respectively signal input part of line computation chip and zero line computation chip of the signal output part of manganese copper diverter, the signal output part of live wire computation chip and zero line computation chip connects the signal input part of MCU respectively.
The utility model is compared with background technology, the one, adopt the two-way computation chip to realize single-phase anti-electricity-theft table function, by shunt sample rate current signal, by MCU to two-way pulse handle, the stealing condition can be provided with by demand; The 2nd, be not subjected to outside strong magnetic interference, when having DC component, load current can guarantee metering accuracy.
Description of drawings:
Fig. 1 is the frame structure synoptic diagram of single-phase anti-electricity-theft electric energy meter.
Embodiment:
Embodiment 1: with reference to accompanying drawing 1.Single-phase anti-electricity-theft electric energy meter, it comprises electric energy meter, and the formation of electric energy meter structure and circuit is a prior art, is not described herein at this, and the application only narrates the burglar-proof electric circuit of electric energy meter.The live wire of electric energy meter and zero line input end connect the signal input part of manganese copper diverter respectively, start to exchange fire the respectively signal input part of line computation chip and zero line computation chip of the signal output part of manganese copper diverter, the signal output part of live wire computation chip and zero line computation chip connects the signal input part of MCU respectively.The live wire of electric energy meter and zero line input end be the signal input part of connecting resistance network respectively, start to exchange fire the respectively signal input part of line computation chip and zero line computation chip of the signal output part of resistor network.The shared same power supply of live wire computation chip and MCU.The zero line computation chip is powered separately.Zero line computation chip and MCU are provided with buffer circuit.Its principle is as follows: the live wire current signal is input to (CH1) in the live wire computation chip by shunt, the live wire computation chip with live wire 220V as reference voltage, zero line voltage is input to (CH2) in the live wire computation chip after by the resistor network step-down, carries out digital multiply and low pass in computation chip inside and handles and can obtain the L with the proportional pulse output of actual consumption electric weight Pulse; Equally, neutral line current (electric current after the load of flowing through) signal is input in the zero line computation chip by shunt, the zero line computation chip with zero line voltage as reference voltage, live wire 220V is input in the zero line computation chip after by the resistor network step-down, carries out digital multiply and low pass in computation chip inside and handles and can obtain the N with the proportional pulse output of actual consumption electric weight Pulse.MCU and live wire metering circuit use same road power supply; The zero line computation chip is powered separately, and Pulse N is input among the MCU after isolating.MCU send display module after pulse is handled to two-way, obtains information about power.
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 single-phase anti-electricity-theft electric energy meter, it comprises electric energy meter, it is characterized in that: the live wire of electric energy meter and zero line input end connect the signal input part of manganese copper diverter respectively, start to exchange fire the respectively signal input part of line computation chip and zero line computation chip of the signal output part of manganese copper diverter, the signal output part of live wire computation chip and zero line computation chip connects the signal input part of MCU respectively.
2, single-phase anti-electricity-theft electric energy meter according to claim 1, it is characterized in that: the live wire of electric energy meter and zero line input end be the signal input part of connecting resistance network respectively, start to exchange fire the respectively signal input part of line computation chip and zero line computation chip of the signal output part of resistor network.
3, single-phase anti-electricity-theft electric energy meter according to claim 1 is characterized in that: the shared same power supply of live wire computation chip and MCU, the zero line computation chip is powered separately.
4, single-phase anti-electricity-theft electric energy meter according to claim 1 is characterized in that: the shared same power supply of live wire computation chip and MCU, the zero line computation chip is powered separately.
5, single-phase anti-electricity-theft electric energy meter according to claim 1, it is characterized in that: zero line computation chip and MCU are provided with buffer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006649 CN2921840Y (en) | 2006-04-03 | 2006-04-03 | Single-phase antistealing electricity electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006649 CN2921840Y (en) | 2006-04-03 | 2006-04-03 | Single-phase antistealing electricity electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2921840Y true CN2921840Y (en) | 2007-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620006649 Expired - Lifetime CN2921840Y (en) | 2006-04-03 | 2006-04-03 | Single-phase antistealing electricity electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2921840Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072978A (en) * | 2011-01-25 | 2011-05-25 | 武汉盛帆电子股份有限公司 | Single-phase double-circuit manganese copper metering anti-theft electric charge-controlled intelligent electric energy meter |
| CN105223392A (en) * | 2015-10-30 | 2016-01-06 | 国网新疆电力公司电力科学研究院 | Based on the Anti-fradulance of IEC62056 standard |
| CN106405181A (en) * | 2016-10-31 | 2017-02-15 | 国网山东省电力公司济南供电公司 | Electric energy meter with anti-electricity stealing monitoring function |
| WO2018053726A1 (en) * | 2016-09-21 | 2018-03-29 | 深圳市思达仪表有限公司 | Method for generating pulses by double manganin sampling circuits of single-phase three-wire electric energy meter |
| CN109061263A (en) * | 2018-08-31 | 2018-12-21 | 宁波三星智能电气有限公司 | A kind of electrical energy meter anti-theft electricity method |
| CN111007436A (en) * | 2019-12-27 | 2020-04-14 | 广东电科院能源技术有限责任公司 | Electric leakage detection device |
| CN114487529A (en) * | 2022-01-17 | 2022-05-13 | 无锡市恒通电器有限公司 | Single-phase electric energy meter with instantaneous value electricity stealing and electric leakage prevention detection function and with time scale/phase angle |
-
2006
- 2006-04-03 CN CN 200620006649 patent/CN2921840Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072978A (en) * | 2011-01-25 | 2011-05-25 | 武汉盛帆电子股份有限公司 | Single-phase double-circuit manganese copper metering anti-theft electric charge-controlled intelligent electric energy meter |
| CN105223392A (en) * | 2015-10-30 | 2016-01-06 | 国网新疆电力公司电力科学研究院 | Based on the Anti-fradulance of IEC62056 standard |
| WO2018053726A1 (en) * | 2016-09-21 | 2018-03-29 | 深圳市思达仪表有限公司 | Method for generating pulses by double manganin sampling circuits of single-phase three-wire electric energy meter |
| CN106405181A (en) * | 2016-10-31 | 2017-02-15 | 国网山东省电力公司济南供电公司 | Electric energy meter with anti-electricity stealing monitoring function |
| CN106405181B (en) * | 2016-10-31 | 2018-08-07 | 国网山东省电力公司济南供电公司 | A kind of electric energy meter with anti-electricity-theft monitoring function |
| CN109061263A (en) * | 2018-08-31 | 2018-12-21 | 宁波三星智能电气有限公司 | A kind of electrical energy meter anti-theft electricity method |
| CN111007436A (en) * | 2019-12-27 | 2020-04-14 | 广东电科院能源技术有限责任公司 | Electric leakage detection device |
| CN114487529A (en) * | 2022-01-17 | 2022-05-13 | 无锡市恒通电器有限公司 | Single-phase electric energy meter with instantaneous value electricity stealing and electric leakage prevention detection function and with time scale/phase angle |
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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 |
|
| 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. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070711 |
|
| EXPY | Termination of patent right or utility model |