CN202661545U - Three-phase electric energy meter - Google Patents
Three-phase electric energy meter Download PDFInfo
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- CN202661545U CN202661545U CN 201220283871 CN201220283871U CN202661545U CN 202661545 U CN202661545 U CN 202661545U CN 201220283871 CN201220283871 CN 201220283871 CN 201220283871 U CN201220283871 U CN 201220283871U CN 202661545 U CN202661545 U CN 202661545U
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- electric energy
- energy meter
- phase electric
- microprocessor
- computation chip
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Abstract
The utility model discloses a three-phase electric energy meter which comprises a first metering chip, a microprocessor, a communication module and an internal memory. An input end of the first metering chip is electrically connected with three-phase alternating current; an output end of the first metering chip, the communication module and the internal memory are connected with the microprocessor respectively; the three-phase electric energy meter further comprises a second metering chip; an input end of the second metering chip is connected with the three-phase alternating current; and an output end of the second metering chip is connected with the microprocessor. The working reliability of the three-phase electric meter is high.
Description
Technical field
The utility model relates to the electric energy meter technical field, specifically is a kind of three-phase electric energy meter.
Background technology
The three-phase electric energy meter of prior art comprises computation chip, microprocessor, communication module and internal memory, and the input end of described computation chip is electrically connected with three-phase alternating current, and the output terminal of described computation chip, communication module, internal memory all are connected with microprocessor.There is following defective in the three-phase electric energy meter of said structure in the use procedure of reality: because the three-phase electric energy meter of prior art adopts the metering of single metering chip, therefore when this computation chip damages, can stop gage work, thereby cause the functional reliability of the three-phase electric energy meter of prior art to reduce.In addition, owing to adopt the metering of single metering chip, therefore can cause the measuring accuracy of three-phase electric energy meter lower.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, and a kind of functional reliability height and the high three-phase electric energy meter of measuring accuracy are provided.
The technical solution of the utility model is, a kind of three-phase electric energy meter is provided, comprise the first computation chip, microprocessor, communication module and internal memory, the input end of described the first computation chip is electrically connected with three-phase alternating current, the output terminal of described the first computation chip, communication module, internal memory all are connected with microprocessor, described three-phase electric energy meter also comprises the second computation chip, and the input end of described the second computation chip is electrically connected with three-phase alternating current, and the output terminal of described the second computation chip is connected with microprocessor.
After adopting above structure, the utility model compared with prior art has the following advantages:
The utility model three-phase electric energy meter adopts two computation chips meterings, and namely therefore double-loop metering can also adopt the metering of another one computation chip when a computation chip damages, thereby so that the functional reliability of the three-phase electric energy meter of prior art increase.Simultaneously, owing to adopt two circuit two computation chips metering, can analyze, compare the data error of two chips by the output Data Comparison of two chips, thereby measuring accuracy is drawn accurate an analysis.Therefore the measuring accuracy of the utility model three-phase electric energy meter is high.
Description of drawings
Accompanying drawing is the structural representation of the utility model three-phase electric energy meter.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in drawings, a kind of three-phase electric energy meter of the utility model, comprise the first computation chip, microprocessor, communication module and internal memory, the input end of described the first computation chip is electrically connected with three-phase alternating current, the output terminal of described the first computation chip, communication module, internal memory all are connected with microprocessor, wherein the first computation chip, communication module and the transmission of microprocessor one-way data, internal memory and microprocessor are bidirectional data transfers.Described three-phase electric energy meter also comprises the second computation chip, and the input end of described the second computation chip is electrically connected with three-phase alternating current, and the output terminal of described the second computation chip is connected with microprocessor.
The utility model proposes and adopt two-way independently voltage, current sampling circuit and computation chip/metering module, adopt the way to manage of similar Source of Gateway Meter " major-minor table ": major and minor loop all through calibration, and has independently calibration pulse output before dispatching from the factory; The electrical energy pulse that microprocessor can provide according to major and minor loop/electric energy equivalent adds up respectively, and regularly judges the measurement deviation (when not surpassing setting value, microprocessor can not add up the energy of subloop) in major and minor loop; When surpassing setting value, the electric energy meter automatic alarm also adds up respectively the electric energy added value of major and minor loop when surpassing setting value, thereby has improved measuring accuracy and the functional reliability of three-phase electric energy meter.
Below only be described with regard to most preferred embodiment of the present utility model, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (1)
1. three-phase electric energy meter, comprise the first computation chip, microprocessor, communication module and internal memory, the input end of described the first computation chip is electrically connected with three-phase alternating current, the output terminal of described the first computation chip, communication module, internal memory all are connected with microprocessor, it is characterized in that: described three-phase electric energy meter also comprises the second computation chip, the input end of described the second computation chip is electrically connected with three-phase alternating current, and the output terminal of described the second computation chip is connected with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283871 CN202661545U (en) | 2012-06-15 | 2012-06-15 | Three-phase electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220283871 CN202661545U (en) | 2012-06-15 | 2012-06-15 | Three-phase electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661545U true CN202661545U (en) | 2013-01-09 |
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ID=47456443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220283871 Expired - Lifetime CN202661545U (en) | 2012-06-15 | 2012-06-15 | Three-phase electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698598A (en) * | 2013-12-26 | 2014-04-02 | 华立仪表集团股份有限公司 | Ammeter and low-error pulse output method thereof |
-
2012
- 2012-06-15 CN CN 201220283871 patent/CN202661545U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698598A (en) * | 2013-12-26 | 2014-04-02 | 华立仪表集团股份有限公司 | Ammeter and low-error pulse output method thereof |
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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 | ||
| CP03 | Change of name, title or address |
Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Patentee after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315131, AUX Industrial Park, Mingguang North Road, Jiangshan Town, Ningbo, Yinzhou District, Zhejiang 1166, China Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |