CN201788227U - Electric energy meter - Google Patents
Electric energy meter Download PDFInfo
- Publication number
- CN201788227U CN201788227U CN201020518279XU CN201020518279U CN201788227U CN 201788227 U CN201788227 U CN 201788227U CN 201020518279X U CN201020518279X U CN 201020518279XU CN 201020518279 U CN201020518279 U CN 201020518279U CN 201788227 U CN201788227 U CN 201788227U
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- CN
- China
- Prior art keywords
- electric energy
- crystal oscillator
- energy metering
- microprocessor
- energy meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses an electric energy meter which comprises an electric energy metering circuit, a power supply circuit, a microprocessor, a crystal oscillator and a memory circuit, wherein the input terminal of the electric energy metering circuit is connected with an AC wire led from an external network; the output terminal of the electric energy metering circuit is connected with an AC wire that is used by a user; the microprocessor is connected with the electric energy metering circuit, the crystal oscillator and the memory circuit respectively; and the power supply circuit is connected with the microprocessor, the electric energy metering circuit and the memory circuit respectively; and a temperature compensation crystal oscillator is arranged inside the crystal oscillator. The electric energy meter can accurately meter electric energy even being arranged in high-temperature environment.
Description
Technical field
The utility model relates to electric energy meter commonly used in a kind of daily life.
Background technology
The electric energy meter of prior art comprises ic for energy metering, power circuit, microprocessor, crystal oscillator and memory circuit, the input end of described ic for energy metering taps into the alternating current wires of coming with outer net and is connected, and the output terminal of described ic for energy metering is connected with the alternating current wires that the user uses.Described microprocessor is connected with ic for energy metering, crystal oscillator, memory circuit respectively, is used for the disposal system internal data.Described power circuit is connected with microprocessor, ic for energy metering and memory circuit respectively, for they provide working power.There is following defective in the electric energy meter of said structure in the use of reality: along with the continuous development of electric energy meter technology, electric energy meter begins to have increasing function, and along with the increasing of electric energy meter function, electric energy meter is inner can to produce a large amount of heats, causes the temperature in the electric energy meter to raise.And when electric energy meter works long hours in this hot environment,, therefore will inevitably cause electric energy meter the inaccurate situation of metering to occur owing to the crystal oscillator in the electric energy meter is subjected to temperatures involved to make toggle rate change.
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 electric energy meter that still can accurately measure electric energy in hot environment is provided.
The technical solution of the utility model is, a kind of electric energy meter is provided, comprise ic for energy metering, power circuit, microprocessor, crystal oscillator and memory circuit, the input end of described ic for energy metering taps into the alternating current wires of coming with outer net and is connected, and the output terminal of described ic for energy metering is connected with the alternating current wires that the user uses; Described microprocessor is connected with ic for energy metering, crystal oscillator, memory circuit respectively; Described power circuit is connected with microprocessor, ic for energy metering and memory circuit respectively, and described crystal oscillator is a built-in temperature compensation crystal oscillator.
Described built-in temperature compensation crystal oscillator model is RX8025T.
After adopting above structure, the utility model compared with prior art has the following advantages:
Crystal oscillator in the utility model electric energy meter is a built-in temperature compensation crystal oscillator, this crystal oscillator can be realized accurate timing in wide temperature range, thereby avoided causing the true problem of crystal oscillator timing uncertainty, made electric energy meter in hot environment, still can accurately measure electric energy by high temperature.
Description of drawings
Accompanying drawing is the circuit block diagram of the utility model 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 electric energy meter of the utility model, comprise ic for energy metering, power circuit, microprocessor, crystal oscillator and memory circuit, the input end of described ic for energy metering taps into the alternating current wires of coming with outer net and is connected, and the output terminal of described ic for energy metering is connected with the alternating current wires that the user uses.Described microprocessor is connected with ic for energy metering, crystal oscillator, memory circuit respectively, is used for the disposal system internal data.Described power circuit is connected with microprocessor, ic for energy metering and memory circuit respectively, for they provide working power.Above-mentioned connection is lead and connects.
Described crystal oscillator is a built-in temperature compensation crystal oscillator.
The model of described microprocessor is NEC0485, and described built-in temperature compensation crystal oscillator model is RX8025T.Ic for energy metering, power circuit and memory circuit all are the known circuit of those of ordinary skill in the industry technical field, are not therefore just describing in detail.During work,, therefore guaranteed that electric energy meter still can accurately measure electric energy in hot environment because built-in temperature compensation crystal oscillator can be realized accurate timing in wide temperature range.
Below only be described, but can not be interpreted as it is restriction claim with regard to most preferred embodiment of the present utility model.The utility model is not limited only to above embodiment, and its concrete structure allows variation.In every case the various variations of being done in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (2)
1. electric energy meter, comprise ic for energy metering, power circuit, microprocessor, crystal oscillator and memory circuit, the input end of described ic for energy metering taps into the alternating current wires of coming with outer net and is connected, and the output terminal of described ic for energy metering is connected with the alternating current wires that the user uses; Described microprocessor is connected with ic for energy metering, crystal oscillator, memory circuit respectively; Described power circuit is connected with microprocessor, ic for energy metering and memory circuit respectively, it is characterized in that: described crystal oscillator is a built-in temperature compensation crystal oscillator.
2. electric energy meter according to claim 1 is characterized in that: described built-in temperature compensation crystal oscillator model is RX8025T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020518279XU CN201788227U (en) | 2010-09-01 | 2010-09-01 | Electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020518279XU CN201788227U (en) | 2010-09-01 | 2010-09-01 | Electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788227U true CN201788227U (en) | 2011-04-06 |
Family
ID=43820186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020518279XU Expired - Lifetime CN201788227U (en) | 2010-09-01 | 2010-09-01 | Electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788227U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884608A (en) * | 2017-11-02 | 2018-04-06 | 钜泉光电科技(上海)股份有限公司 | A kind of electric energy meter control system and clock correction method |
-
2010
- 2010-09-01 CN CN201020518279XU patent/CN201788227U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884608A (en) * | 2017-11-02 | 2018-04-06 | 钜泉光电科技(上海)股份有限公司 | A kind of electric energy meter control system and clock correction method |
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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: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo Sanxing Electric Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |