CN1605875A - Multifunctional single-phase digital watthour meter - Google Patents
Multifunctional single-phase digital watthour meter Download PDFInfo
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- CN1605875A CN1605875A CN 200310100837 CN200310100837A CN1605875A CN 1605875 A CN1605875 A CN 1605875A CN 200310100837 CN200310100837 CN 200310100837 CN 200310100837 A CN200310100837 A CN 200310100837A CN 1605875 A CN1605875 A CN 1605875A
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Abstract
The invention provides an arrangement for realizing multifunctional single-phase digital watthour meter which comprises, three ways of analog-digital converter (ADC), at least two groups of effective value arithmetic elements and an electricity stealing judgment unit, at least a power arithmetic element and at least a numerical frequency conversion element, the electricity stealing judgment unit includes an electricity stealing judgment logic circuit and a read-write register, which configures different electricity anti-theft judgment normalized value according to different environment of applications, the electricity stealing judgment logic circuit proceeds judgment computation based on the effective value of the two ways of electric current and value configured in the register, and sends out the electricity stealing signal and right current instantaneous value for participating the power computation, the power arithmetic element calculates the energy power, and the numerical frequency conversion unit completes the impulse output conversion.
Description
Affiliated technical field
This utility model relates to the multi-functional framework of the single-phase digital kilowatt-hour meter of a kind of realization, especially realizes the framework of the single-phase digital kilowatt-hour meter that anti-electricity-theft and different stealing standards are judged according to different applied environments.
Background technology
Early stage single-phase digital kilowatt-hour meter is only finished the function of metering active energy, comprises No. 2 analog-digital converters (ADC), 1 group of multiplier, 1 group of low-pass filter (LPF), 1 road integrator (INTER) and 1 way word frequency converter.Along with electric energy tolerance application and development, the single-phase digital kilowatt-hour meter of anti-stealing electricity function has appearred having, on simple single-phase digital kilowatt-hour meter basis, increased No. one analog-digital converter and a stealing decision circuitry, chosen and meet a road of stealing criterion in the two tunnel different current paths and measure computing as effective current values.This framework is simple, hardware is realized being easier to, but owing to the anti-electricity-theft criterion difference of country variant, to anti-electricity-theft electric energy computing method difference, can not satisfy all different applied environments.
Summary of the invention
In order to overcome the deficiency that existing single-phase digital kilowatt-hour meter framework can not satisfy all different applied environments, the utility model adopts read-write register value to carry out the stealing judgement as criterion, can adapt to various stealing criterions neatly, alleviated requirement to hardware, simultaneously also can satisfy some special applications requirement, for example two road electric currents be stacked up as effective current values.
Framework of the present utility model comprises: No. 3 analog-digital converters (analog-digitalconverter), at least 2 group effective value arithmetic elements, stealing judging unit, at least 1 road Power arithmetic unit and at least 1 way word frequency converting unit.The technical scheme that it adopted is: No. 3 analog-digital converters accept to represent respectively the 2 tunnel different current paths and the analog input signal of 1 tunnel voltage path, finish the conversion from the simulating signal to the digital signal.The effective value computing unit is done the effective value computing to the output result of analog-digital converter (ADC), and operation result is as the input signal of stealing judging unit.The stealing judging unit comprises stealing decision logic circuit and a read-write register, this register can be provided with different anti-electricity-theft criterion values according to different applied environments, the value that is provided with in the effective value of 2 road electric currents that stealing decision logic circuit obtains according to computing and the register, judge computing, corresponding stealing marking signal and the correct current instantaneous value of sending to the participation Power arithmetic sent; The Power arithmetic unit comprises 1 group of multidigit unit's multiplier and 1 group of low-pass filter, calculate active power, can also increase by 1 road Power arithmetic unit and be used to calculate reactive power, the numerical frequency converting unit comprises 1 group inte gration device (INTER) and 1 group of accumulator element (DF), finish the meritorious energy pulses output conversion of being asked, can also increase the pulse output conversion that 1 way word frequency converting unit is used to finish quadergy.
The utility model can satisfy current all single-phase digital electric energy metricals require with additional function in, carry out the setting of stealing criterion value by read-write register, satisfy all different applied environments, physics realization is easier to.
Description of drawings
Fig. 1 is the structural map of embodiment.
Fig. 2 is a framework frame diagram of the present utility model.Each frame of broken lines is a working cell among the figure, and middle horizontal dotted line is the requisite ingredient of this framework with top, is to select the part that increases with the lower part.
Embodiment
As shown in Figure 2, in a typical digital kilowatt-hour meter is used, total system is made of this framework (multifunctional single phase digital kilowatt-hour meter) and a single-chip microcomputer, single-chip microcomputer writes read-write register in the stealing judging unit to different anti-electricity-theft standard values, by this framework the signal of input is handled output power pulse signal (CF) and stealing marking signal (QD) then.
Claims (2)
1, a kind of framework of multifunctional single phase digital kilowatt-hour meter, comprise No. 3 analog-digital converters (ADC), at least 2 group effective value arithmetic elements, stealing judging unit, at least 1 road Power arithmetic unit and at least 1 way word frequency converting unit, it is characterized in that: the stealing judging unit is made up of a read-write register and stealing decision logic circuit.
2, stealing judging unit according to claim 1 is characterized in that: read-write register can be provided with different anti-electricity-theft criterion values according to different applied environments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100837 CN1605875A (en) | 2003-10-06 | 2003-10-06 | Multifunctional single-phase digital watthour meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310100837 CN1605875A (en) | 2003-10-06 | 2003-10-06 | Multifunctional single-phase digital watthour meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1605875A true CN1605875A (en) | 2005-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310100837 Pending CN1605875A (en) | 2003-10-06 | 2003-10-06 | Multifunctional single-phase digital watthour meter |
Country Status (1)
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| CN (1) | CN1605875A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443905C (en) * | 2006-12-15 | 2008-12-17 | 北京中星微电子有限公司 | Apparatus for generating signals against fraudulent using electricity |
| CN102998525A (en) * | 2011-09-15 | 2013-03-27 | 无锡华润矽科微电子有限公司 | Multifunctional single-phase electric energy measuring circuit and automatic ammeter calibrating method thereof |
| CN112098712A (en) * | 2020-07-28 | 2020-12-18 | 宁波三星医疗电气股份有限公司 | Electricity larceny prevention method |
-
2003
- 2003-10-06 CN CN 200310100837 patent/CN1605875A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443905C (en) * | 2006-12-15 | 2008-12-17 | 北京中星微电子有限公司 | Apparatus for generating signals against fraudulent using electricity |
| CN102998525A (en) * | 2011-09-15 | 2013-03-27 | 无锡华润矽科微电子有限公司 | Multifunctional single-phase electric energy measuring circuit and automatic ammeter calibrating method thereof |
| CN102998525B (en) * | 2011-09-15 | 2016-06-08 | 无锡华润矽科微电子有限公司 | Single-phase multifunctional electric energy metering circuit and ammeter automatic calibrating method thereof |
| CN112098712A (en) * | 2020-07-28 | 2020-12-18 | 宁波三星医疗电气股份有限公司 | Electricity larceny prevention method |
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