CN202159083U - Electricity stealing resistant electricity meter - Google Patents
Electricity stealing resistant electricity meter Download PDFInfo
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- CN202159083U CN202159083U CN2011202055566U CN201120205556U CN202159083U CN 202159083 U CN202159083 U CN 202159083U CN 2011202055566 U CN2011202055566 U CN 2011202055566U CN 201120205556 U CN201120205556 U CN 201120205556U CN 202159083 U CN202159083 U CN 202159083U
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Abstract
The utility model relates to the technical field of single phase electricity meters, and particularly provides an electricity stealing resistant electricity meter, which comprises a power circuit, a measuring unit, a single chip microcomputer control unit and an intelligent electricity meter basic function module. The output end of the power circuit is respectively connected with the measuring unit and the single chip microcomputer control unit and supplies power for the measuring unit and the single chip microcomputer control unit, a battery power supply circuit is further arranged in the electricity meter and respectively connected with the measuring unit and the single chip microcomputer control unit. The electricity stealing resistant electricity meter can not only meet requirements for high accuracy and low power consumption, but also detect whether a user steals electricity in the absence of lacking a zero line.
Description
Technical field
The utility model relates to the single-phase electric energy meter technical field, is specifically related to a kind of anti-electricity-theft electric energy meter.
Background technology
Along with the continuous development of intelligent electric energy meter technology, the electrical energy meter anti-theft electricity function is also being updated.From the anti-electricity-theft computation chip of use the earliest (as 7751) to through the main negative channel current size of double-loop metering contrast phase or the like method whether, whether stealing of judges accurately.But these anti-electricity-theft methods all need electric energy meter in normal operating conditions, if the electric energy meter zero line is broken off by artificial, only live wire has electric current to pass through, and then electric energy meter itself can not be worked, and just can't learn whether stealing of user.
Summary of the invention
The purpose of the utility model is exactly in order to overcome the weak point of above-mentioned prior art, and a kind of anti-electricity-theft electric energy meter is provided, and not only can satisfy the requirement of high precision, low-power consumption, can also lack under the situation of zero line, detects whether stealing of user.
The purpose of the utility model realizes through following technical measures: a kind of anti-electricity-theft electric energy meter; Comprise power circuit, metering units, Single-chip Controlling unit and intelligent electric energy meter basic function module; The output terminal of said power circuit respectively with the power supply that links of metering units and Single-chip Controlling unit; Also be provided with battery feed circuit in its said ammeter, said battery feed circuit links with metering units and Single-chip Controlling unit respectively.
In technique scheme, said battery feed circuit is by diode D1 ~ D3, resistance R 1, and FET BG1, battery BA1 forms; The positive pole of said diode D1 and power circuit 1 end link, and negative pole and metering units link, power circuit 2 end ground connection; Ground connection after the positive pole of diode D2 and battery BA1 link, negative pole and Single-chip Controlling unit power end link; The positive pole of the positive pole of diode D3 and diode D1 links, and the negative pole of negative pole and diode D2 links; The negative pole of the source electrode of said FET BG1 and diode D2 links, and drain electrode and the metering units of FET BG1 link, and the grid of FET BG1 and Single-chip Controlling unit controls end link, and are connected with resistance R 1 between the source electrode of FET BG1 and the grid.
A kind of anti-electricity-theft electric energy meter of the utility model also can provide power supply to computation chip through battery breaking off under the situation of zero line, and whether detect the live wire passage has electric current to flow through, whether stealing of judges.So just avoided artificial cut-out electric energy meter zero line, made the electric energy meter cisco unity malfunction and the situation of carrying out stealing takes place.In addition, the present invention also has advantages such as high precision, high reliability, low-power consumption.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model embodiment anti-electricity-theft electric energy meter.
Fig. 2 is the circuit connecting figure of battery feed circuit among the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
As shown in Figure 1; Present embodiment provides a kind of anti-electricity-theft electric energy meter; Comprise power circuit, metering units, Single-chip Controlling unit and intelligent electric energy meter basic function module; The output terminal of said power circuit respectively with the power supply that links of metering units and Single-chip Controlling unit, also be provided with battery feed circuit in its said ammeter, said battery feed circuit links with metering units and Single-chip Controlling unit respectively.
Above-mentioned Single-chip Controlling unit also links with intelligent electric energy meter basic function module and metering units respectively, is used to realize the electricity consumption measurement function.
As shown in Figure 2, in the present embodiment battery feed circuit by diode D1 ~ D3, resistance R 1, FET BG1, battery BA1 forms; The positive pole of said diode D1 and power circuit 1 end link, and negative pole and metering units link, power circuit 2 end ground connection; Ground connection after the positive pole of diode D2 and battery BA1 link, negative pole and Single-chip Controlling unit power end link; The positive pole of the positive pole of diode D3 and diode D1 links, and the negative pole of negative pole and diode D2 links; The negative pole of the source electrode of said FET BG1 and diode D2 links, and drain electrode and the metering units of FET BG1 link, and the grid of FET BG1 and Single-chip Controlling unit controls end link, and are connected with resistance R 1 between the source electrode of FET BG1 and the grid.
The utility model anti-electricity-theft electric energy meter principle of work be: when electric energy meter power supply just often; External power source is supplied power to metering units through diode D1 through power circuit, gives the power supply of Single-chip Controlling unit through diode D3, and the joining P1 control of this moment Single-chip Controlling unit and battery feed circuit mouth is a high level; FET BG1 is a cut-off state; Battery BA1 does not work, and diode D2 shields, and prevents that battery from damaging.When electric energy meter can not normal power supply, the P1 of Single-chip Controlling unit control mouthful was low level, FET BG1 conducting; Give metering units and the power supply of Single-chip Controlling unit by battery BA1; Resistance R 1 is a current-limiting resistance, and diode D3 shields, and prevents electric current backflow.At this moment, when the electric energy meter live wire had electric current to flow through, metering units just can normally sample, measure, and was sent to the Single-chip Controlling unit to the electricity consumption data and preserves, but Single-chip Controlling unit recording user this moment is just in stealing.
The content that this instructions is not done to describe in detail belongs to this area professional and technical personnel's known prior art.
Claims (2)
1. anti-electricity-theft electric energy meter; Comprise power circuit, metering units, Single-chip Controlling unit and intelligent electric energy meter basic function module; The output terminal of said power circuit respectively with the power supply that links of metering units and Single-chip Controlling unit; It is characterized in that: also be provided with battery feed circuit in the said ammeter, said battery feed circuit links with metering units and Single-chip Controlling unit respectively.
2. anti-electricity-theft electric energy meter according to claim 1 is characterized in that: said battery feed circuit is by diode D1 ~ D3, resistance R 1, and FET BG1, battery BA1 forms; The positive pole of said diode D1 links to each other with power circuit 1 end, and negative pole links to each other with metering units, power circuit 2 end ground connection; Ground connection after the positive pole of diode D2 links to each other with battery BA1, negative pole links to each other with Single-chip Controlling unit power end; The positive pole of diode D3 links to each other with the positive pole of diode D1, and negative pole links to each other with the negative pole of diode D2; The source electrode of said FET BG1 links to each other with the negative pole of diode D2; The drain electrode of FET BG1 links to each other with metering units; The grid of FET BG1 links to each other with the control end of Single-chip Controlling unit, is connected with resistance R 1 between the source electrode of FET BG1 and the grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202055566U CN202159083U (en) | 2011-06-17 | 2011-06-17 | Electricity stealing resistant electricity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202055566U CN202159083U (en) | 2011-06-17 | 2011-06-17 | Electricity stealing resistant electricity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159083U true CN202159083U (en) | 2012-03-07 |
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ID=45766715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202055566U Expired - Fee Related CN202159083U (en) | 2011-06-17 | 2011-06-17 | Electricity stealing resistant electricity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253260A (en) * | 2011-06-17 | 2011-11-23 | 武汉盛帆电子股份有限公司 | Electricity stealing-prevention electric energy meter |
| WO2014101630A1 (en) | 2012-12-28 | 2014-07-03 | 华立仪表集团股份有限公司 | Near-infrared reading device and ammeter |
-
2011
- 2011-06-17 CN CN2011202055566U patent/CN202159083U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253260A (en) * | 2011-06-17 | 2011-11-23 | 武汉盛帆电子股份有限公司 | Electricity stealing-prevention electric energy meter |
| WO2014101630A1 (en) | 2012-12-28 | 2014-07-03 | 华立仪表集团股份有限公司 | Near-infrared reading device and ammeter |
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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: 20120307 Termination date: 20140617 |
|
| EXPY | Termination of patent right or utility model |