CN202471787U - Single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny - Google Patents
Single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny Download PDFInfo
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- CN202471787U CN202471787U CN2012200848036U CN201220084803U CN202471787U CN 202471787 U CN202471787 U CN 202471787U CN 2012200848036 U CN2012200848036 U CN 2012200848036U CN 201220084803 U CN201220084803 U CN 201220084803U CN 202471787 U CN202471787 U CN 202471787U
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- live wire
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- intelligent electric
- cost control
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Abstract
The utility model relates to a single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny. The single-phase cost control intelligent electric meter comprises a metering chip, a microprocessor and a path of voltage sampling return circuit which are connected together. The single-phase cost control intelligent electric meter is characterized by two paths of current sampling return circuits; the two paths of current sampling return circuits are electrically connected with a live wire and a zero line respectively so as to sample the current output of the live wire and the zero line; besides, the two paths of current sampling return circuits are electrically connected with the input end of the metering chip; and the output end of the metering chip is electrically connected with the microprocessor. The electric energy metering of the single-phase cost control intelligent electric meter is based on the greater current of the live wire and the zero line, even if no load current flows through one of the live wire and the zero line, the electric meter can accurately meter electric energy and charge, so that the common electric larceny attempt by a short-circuited live wire can be effectively prevented, and the economic loss caused by electric larceny to the power supply department is reduced.
Description
Technical field
The utility model relates to a kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit.
Background technology
Along with rapid development of national economy, the raising of living standards of the people, each electric appliances of family is more and more; Electricity consumption of resident increases severely, and receives ordering about of economic interests, has many illegal stealing electricity phenomenons in the society; Cause great economic loss to power supply department; According to numerous stealing case analysis, stealing is many starts with from WT-MSR, and electric energy meter metering electric weight is by voltage, electric current, power factor (PF) three elements and the decision of the product of time; Therefore any one that changes in the electric energy metrical three elements all can make electric energy meter measure less or not measure, and reaches the purpose of stealing.
Single-phase expense control electric energy meter in the market possesses game clock lid event recording function and powerful security function; Can effectively prevent to open watchcase distorting to electric energy meter inside metering circuit and operational factor; But because electric energy metrical carries out based on the live wire electric current, neutral line current is not participated in electric energy metrical, when in the electric energy meter outside live wire turnover line being implemented fraudulent use electricity by short-circuit; There are few metering or non-metering problem; When the on-load switch of control live wire break-make tripped, electric current flow through from shorting stub fully especially, and no any electric current flows through on the live wire current sample element shunt; Ammeter does not measure fully in this case; Though management system can be found the behavior of live wire fraudulent use electricity by short-circuit unusually through long-range copy reading and comparison electric energy meter live wire, neutral line current parameter difference, considers time-division charge rate electricity price factor, remedies the quantitatively difficult problem of ubiquity for the electricity charge of stealing electric weight.
The utility model content
The purpose of the utility model provides a kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit, can effectively prevent the behavior of live wire fraudulent use electricity by short-circuit.
A kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit; Comprise the computation chip and microcontroller and one road voltage sampling loop that are connected; Its special feature is; Also comprise two-way current sampling loop, the electric current output of live wire and zero line is sampled thereby this two-way current sampling loop is electrically connected with live wire and zero line respectively; This two-way current sampling loop all is electrically connected with the input end of said computation chip in addition, and the output terminal of computation chip is electrically connected with microcontroller.
Wherein computation chip is the single-phase multifunctional computation chip.
Wherein microcontroller is a single-chip microcomputer.
The electric energy metrical of the utility model electric energy meter carries out based on the greater in live wire and two electric currents of zero line; Even in two lines, there is a line to have no load current to flow through; Electric energy meter also can be correct the metering electric energy and the electricity charge; Therefore can effectively contain the stealing attempt of common live wire short circuit, reduce the economic loss that stealing causes to power supply department.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of the utility model.
Embodiment
As shown in Figure 1; A kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit; Comprise the computation chip and microcontroller and one road voltage sampling loop that are connected; Also comprise two-way current sampling loop, the electric current output of live wire and zero line is sampled thereby this two-way current sampling loop is electrically connected with live wire and zero line respectively; This two-way current sampling loop all is electrically connected with the input end of said computation chip in addition, and the output terminal of computation chip is electrically connected with microcontroller.
Computation chip is the single-phase multifunctional computation chip, and microcontroller is a single-chip microcomputer.
The anti-electricity-theft special-purpose computation chip of RN8209 single-phase multifunctional that computation chip specifically can adopt the little Science and Technology Ltd. of the sharp ability in Shenzhen to produce, the 78F0526 single-chip microcomputer that microcontroller adopts Japanese NEC Corporation to produce.
The principle of work of the utility model is: single-chip microcomputer regularly reads and compares the value of computation chip live wire and neutral line current register; If these two electric current phase differences surpass the threshold values of setting; Single-chip microcomputer is selected the passage of current channel bigger in two electric currents of computation chip as current electric energy metrical; Exporting sound and light alarm signal indication stealing state simultaneously takes place; Because of electric energy metrical carries out based on the greater in these two electric currents, even in two lines, there is a line to have no load current to flow through, the metering electric energy that electric energy meter also can be correct.
Claims (3)
1. single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit; Comprise the computation chip and microcontroller and one road voltage sampling loop that are connected; It is characterized in that: also comprise two-way current sampling loop, the electric current output of live wire and zero line is sampled thereby this two-way current sampling loop is electrically connected with live wire and zero line respectively; This two-way current sampling loop all is electrically connected with the input end of said computation chip in addition, and the output terminal of computation chip is electrically connected with microcontroller.
2. a kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit as claimed in claim 1, it is characterized in that: wherein computation chip is the single-phase multifunctional computation chip.
3. according to claim 1 or claim 2 a kind of single-phase expense control intelligent electric energy meter that prevents the live wire fraudulent use electricity by short-circuit, it is characterized in that: wherein microcontroller is a single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200848036U CN202471787U (en) | 2012-03-08 | 2012-03-08 | Single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200848036U CN202471787U (en) | 2012-03-08 | 2012-03-08 | Single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471787U true CN202471787U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200848036U Expired - Fee Related CN202471787U (en) | 2012-03-08 | 2012-03-08 | Single-phase cost control intelligent electric meter capable of preventing short-circuited live wire electric larceny |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471787U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323637A (en) * | 2013-05-23 | 2013-09-25 | 国家电网公司 | Low-voltage intelligent electric meter electricity-stealing checking device |
| CN104181386A (en) * | 2014-09-03 | 2014-12-03 | 哈尔滨电工仪表研究所 | Single-phase fee charged intelligent ammeter |
| CN106918738A (en) * | 2015-12-28 | 2017-07-04 | 上海贝岭股份有限公司 | The metering control system of current divider in electric energy meter |
| CN108375712A (en) * | 2018-05-21 | 2018-08-07 | 潍坊五洲浩特电气有限公司 | Intelligent line inspection instrument |
| CN106097588B (en) * | 2016-06-15 | 2018-11-02 | 无锡市恒通电器有限公司 | A kind of single-phase cost-control intelligent ammeter |
| CN109444497A (en) * | 2018-11-07 | 2019-03-08 | 杭州万高科技股份有限公司 | A kind of anti-electricity-theft single-phase electric energy meter |
-
2012
- 2012-03-08 CN CN2012200848036U patent/CN202471787U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323637A (en) * | 2013-05-23 | 2013-09-25 | 国家电网公司 | Low-voltage intelligent electric meter electricity-stealing checking device |
| CN104181386A (en) * | 2014-09-03 | 2014-12-03 | 哈尔滨电工仪表研究所 | Single-phase fee charged intelligent ammeter |
| CN106918738A (en) * | 2015-12-28 | 2017-07-04 | 上海贝岭股份有限公司 | The metering control system of current divider in electric energy meter |
| CN106918738B (en) * | 2015-12-28 | 2020-08-25 | 上海贝岭股份有限公司 | Metering control system of shunt in electric energy meter |
| CN106097588B (en) * | 2016-06-15 | 2018-11-02 | 无锡市恒通电器有限公司 | A kind of single-phase cost-control intelligent ammeter |
| CN108375712A (en) * | 2018-05-21 | 2018-08-07 | 潍坊五洲浩特电气有限公司 | Intelligent line inspection instrument |
| CN109444497A (en) * | 2018-11-07 | 2019-03-08 | 杭州万高科技股份有限公司 | A kind of anti-electricity-theft single-phase 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 |
Granted publication date: 20121003 Termination date: 20150308 |
|
| EXPY | Termination of patent right or utility model |