CN202119831U - Three phase intelligent electric energy meter with auxiliary power source - Google Patents
Three phase intelligent electric energy meter with auxiliary power source Download PDFInfo
- Publication number
- CN202119831U CN202119831U CN2011202068960U CN201120206896U CN202119831U CN 202119831 U CN202119831 U CN 202119831U CN 2011202068960 U CN2011202068960 U CN 2011202068960U CN 201120206896 U CN201120206896 U CN 201120206896U CN 202119831 U CN202119831 U CN 202119831U
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- Prior art keywords
- power supply
- electric energy
- energy meter
- power source
- diode
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- 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
A three phase intelligent electric energy meter with an auxiliary power source comprises a main power source and an auxiliary power source, wherein the main power source is connected with a load via a first diode, the auxiliary power source is connected with the load via a second diode, the cathode of the first diode is connected with the cathode of the second diode, and an output voltage of the auxiliary power source is higher than the output voltage of the main power source. The three phase intelligent electric energy meter can reliably and safely conduct power source switching management, thereby guaranteeing power supply of the electric energy meter.
Description
Technical field
The utility model relates to a kind of three-phase intelligent electric energy meter.
Background technology
Existing electric energy meter only is provided with a power supply usually, after this power supply does not have electricity, causes the electric energy meter dead electricity, causes the forfeiture of electric energy meter information recorded possibly.
Summary of the invention
Have only a power supply for overcoming existing intelligent electric energy meter, can't ensure the shortcoming of electric energy meter power supply, the utility model provides a kind of ability to carry out the power supply handover management reliable and securely, the three-phase intelligent electric energy meter of the band accessory power supply of the power supply of guarantee electric energy meter.
The three-phase intelligent electric energy meter of band accessory power supply; It is characterized in that: comprise the primary power and the accessory power supply that are connected with load; Described primary power is connected with load through first diode; Described accessory power supply is connected with load through second diode, and the negative pole of described first diode links to each other with the negative pole of second diode, and the output voltage of described accessory power supply is higher than the output voltage of described primary power.
Further, described load comprises micro-control unit (MCU), display module and peripheral feed circuit.
The technical conceive of the utility model is: primary power and accessory power supply power supply are separated from each other, and the voltage of the voltage ratio primary power output of accessory power supply output wants high.Primary power is given MCU through diode, shows, and the peripheral circuit power supply, accessory power supply is given MCU through diode, shows, the peripheral circuit power supply, the switching of primary power and accessory power supply is through the pressure drop of diode.When primary power has electricity if accessory power supply is not supplied power, supply power to electric energy meter by primary power; When accessory power supply had electricity if primary power is not supplied power, accessory power supply was supplied power to electric energy meter.When if primary power and accessory power supply have electricity simultaneously, supply power to electric energy meter because the voltage of the voltage ratio primary power output of accessory power supply output is high by accessory power supply.
The utlity model has and to carry out the power supply handover management reliable and securely, ensure the advantage of the power supply of electric energy meter.
Description of drawings
Fig. 1 is the circuit diagram that the primary power of the utility model connects load.
Fig. 2 is the circuit diagram of accessory power supply.
Embodiment
With reference to accompanying drawing, further specify the utility model:
The three-phase intelligent electric energy meter of band accessory power supply; Comprise the primary power and the accessory power supply that are connected with load; Described primary power is connected with load through first diode; Described accessory power supply is connected with load through second diode, and the negative pole of described first diode links to each other with the negative pole of second diode, and the output voltage of described accessory power supply is higher than the output voltage of described primary power.
Described load comprises micro-control unit (MCU), display module and peripheral feed circuit.
The technical conceive of the utility model is: primary power and accessory power supply power supply are separated from each other, and the voltage of the voltage ratio primary power output of accessory power supply output wants high.Primary power is given MCU through diode, shows, and the peripheral circuit power supply, accessory power supply is given MCU through diode, shows, the peripheral circuit power supply, the switching of primary power and accessory power supply is through the pressure drop of diode.When primary power has electricity if accessory power supply is not supplied power, supply power to electric energy meter by primary power; When accessory power supply had electricity if primary power is not supplied power, accessory power supply was supplied power to electric energy meter.When if primary power and accessory power supply have electricity simultaneously, supply power to electric energy meter because the voltage of the voltage ratio primary power output of accessory power supply output is high by accessory power supply.
The utlity model has and to carry out the power supply handover management reliable and securely, ensure the advantage of the power supply of electric energy meter.
The described content of this instructions embodiment only is enumerating the way of realization of utility model design; The protection domain of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection domain of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (2)
1. be with the three-phase intelligent electric energy meter of accessory power supply; It is characterized in that: comprise the primary power and the accessory power supply that are connected with load; Described primary power is connected with load through first diode; Described accessory power supply is connected with load through second diode, and the negative pole of described first diode links to each other with the negative pole of second diode, and the output voltage of described accessory power supply is higher than the output voltage of described primary power.
2. the three-phase intelligent electric energy meter of band accessory power supply as claimed in claim 1 is characterized in that: described load comprises micro-control unit, display module and peripheral feed circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068960U CN202119831U (en) | 2011-06-17 | 2011-06-17 | Three phase intelligent electric energy meter with auxiliary power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202068960U CN202119831U (en) | 2011-06-17 | 2011-06-17 | Three phase intelligent electric energy meter with auxiliary power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119831U true CN202119831U (en) | 2012-01-18 |
Family
ID=45460885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202068960U Expired - Lifetime CN202119831U (en) | 2011-06-17 | 2011-06-17 | Three phase intelligent electric energy meter with auxiliary power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338826A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Three-phase intelligent electric energy meter with auxiliary power supply |
-
2011
- 2011-06-17 CN CN2011202068960U patent/CN202119831U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338826A (en) * | 2011-06-17 | 2012-02-01 | 杭州炬华科技股份有限公司 | Three-phase intelligent electric energy meter with auxiliary power supply |
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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 | ||
| CP02 | Change in the address of a patent holder |
Address after: 310030 No. 9 Longtan Road, front street, Yuhang District, Zhejiang, Hangzhou Patentee after: Hangzhou Sunrise Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310030 West Lake science and Technology Park West eight road No. 2 Yinjiang Software Park building C Patentee before: Hangzhou Sunrise Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |