CN202339379U - Single-phase kilowatt-hour meter with multiple meter-reading modes - Google Patents
Single-phase kilowatt-hour meter with multiple meter-reading modes Download PDFInfo
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- CN202339379U CN202339379U CN2011205104634U CN201120510463U CN202339379U CN 202339379 U CN202339379 U CN 202339379U CN 2011205104634 U CN2011205104634 U CN 2011205104634U CN 201120510463 U CN201120510463 U CN 201120510463U CN 202339379 U CN202339379 U CN 202339379U
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- electric energy
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- energy meter
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Abstract
The utility model discloses a single-phase kilowatt-hour meter with multiple meter-reading modes. The single-phase kilowatt-hour meter comprises a microprocessor, a kilowatt-hour meter unit, a voltage sampling unit, a current sampling unit and a power circuit, wherein the signal output ends of the voltage sampling unit and the current sampling unit are connected with the signal input end of the kilowatt-hour meter unit; the data output end of the kilowatt-hour meter unit is connected with the data input end of the microprocessor; the output end of the microprocessor is connected with an LCD (liquid crystal display) display module; the microprocessor is also connected with a clock circuit, a storage, an infrared communication circuit, a GPRS (general packet radio service) communication circuit and a carrier communication circuit; and the power input end of the power circuit is respectively connected with the power input end of the kilowatt-hour meter unit, the power input end of the microprocessor and the power input end of a serial communication circuit. The single-phase kilowatt-hour meter disclosed by the technical scheme can provide multiple meter-reading modes, and is simple and convenient.
Description
Technical field
The present technique scheme belongs to electric power metering device, specifically is a kind of many meter reading methods single-phase electric energy meter.
Background technology
In the prior art, because the limitation of use occasion, for example city, rural area or factory and enterprise etc., meter reading personnel's workload is very big, and, also be not easy to control.In addition because the situation of application scenario is different, stable, the reliability of electric energy meter there is the higher requirement of ratio.
Summary of the invention
In order to solve the problems referred to above that exist in the prior art, the present technique scheme proposes a kind of many meter reading methods single-phase electric energy meter, and is specific as follows:
A kind of many meter reading methods single-phase electric energy meter comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of said microprocessor is connected with the LCD display module; Microprocessor also is connected with clock circuit, storer, infrared communication circuit, GPRS telecommunication circuit and carrier communication circuit;
The power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
Said electric energy meter metering units is electric energy meter computation chip ADE7755.
Said voltage sample unit is a resistor voltage divider network.
Said current sampling unit adopts copper-manganese resistance as sampling resistor.
The principle of this electric energy meter is; Tested alternating voltage and electric current are through delivering to special-purpose electric energy computation chip through after a series of digital processings behind the sampling with high precision; Convert the pulse duration frequency signal that is directly proportional with active power to and give microprocessor; Microprocessor carries out timesharing with pulse signal according to the period rate and adds up, and obtains total electric weight and each rate electric weight, and the result is saved in the data memory.Microprocessor is accomplished simultaneously and is shown and the function of carrying out message exchange with outside (infrared communication, 485 serial communications, carrier communication, electric GPRS communicate by letter), can realize multiple meter reading method; Advantages such as that this table has is highly reliable, high precision, long-life.It is wide that its adapts to voltage range, and complete machine need not be adjusted after dispatching from the factory.
Description of drawings
Fig. 1 is the theory diagram of present technique scheme.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present technique scheme is further specified as follows:
With reference to figure 1, a kind of many meter reading methods single-phase electric energy meter comprises microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of said microprocessor is connected with the LCD display module; Microprocessor also is connected with clock circuit, storer, infrared communication circuit, GPRS telecommunication circuit and carrier communication circuit;
The power input of said power circuit connects seized circuit; Power circuit can adopt Switching Power Supply, and the power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
Said electric energy meter metering units is electric energy meter computation chip ADE7755.
Said voltage sample unit is a resistor voltage divider network.
Said current sampling unit adopts copper-manganese resistance as sampling resistor.
Carrier communication circuit and GPSS telecommunication circuit can be matched the matured product of different manufacturers, in this example preferably
KQ-100E type power line carrier, PLC module, this carrier communication module can directly and between the microprocessor be passed through digital signal communication.
This electric energy meter can satisfy multiple meter reading method by the existing ripe circuit module circuit and the control/calculation function of microprocessor.
Claims (4)
1. meter reading method single-phase electric energy meter more than a kind is characterized in that comprising microprocessor, electric energy meter metering units, voltage sample unit, current sampling unit and power circuit; The signal output part of said voltage sample unit and current sampling unit is connected the signal input part of electric energy meter metering units; The data output end of electric energy meter metering units connects the data input pin of microprocessor;
The output terminal of said microprocessor is connected with the LCD display module; Microprocessor also is connected with clock circuit, storer, infrared communication circuit, GPRS telecommunication circuit and carrier communication circuit;
The power output end of power circuit connects the power input of electric energy meter metering units, the power input of microprocessor and the power input of serial communication circuit respectively.
2. many meter reading methods single-phase electric energy meter according to claim 1 is characterized in that said electric energy meter metering units is electric energy meter computation chip ADE7755.
3. many meter reading methods single-phase electric energy meter according to claim 1 is characterized in that said voltage sample unit is a resistor voltage divider network.
4. many meter reading methods single-phase electric energy meter according to claim 1 is characterized in that said current sampling unit adopts copper-manganese resistance as sampling resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205104634U CN202339379U (en) | 2011-12-09 | 2011-12-09 | Single-phase kilowatt-hour meter with multiple meter-reading modes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205104634U CN202339379U (en) | 2011-12-09 | 2011-12-09 | Single-phase kilowatt-hour meter with multiple meter-reading modes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339379U true CN202339379U (en) | 2012-07-18 |
Family
ID=46488070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205104634U Expired - Fee Related CN202339379U (en) | 2011-12-09 | 2011-12-09 | Single-phase kilowatt-hour meter with multiple meter-reading modes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202339379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901852A (en) * | 2012-10-31 | 2013-01-30 | 中国民航大学 | Multifunctional multi-rate electric energy metering system based on medium-frequency power supply of civil airport |
| CN103344804A (en) * | 2013-07-16 | 2013-10-09 | 沈阳时尚实业有限公司 | Hot plugging device of GPRS module of three-phase multi-functional table |
-
2011
- 2011-12-09 CN CN2011205104634U patent/CN202339379U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901852A (en) * | 2012-10-31 | 2013-01-30 | 中国民航大学 | Multifunctional multi-rate electric energy metering system based on medium-frequency power supply of civil airport |
| CN103344804A (en) * | 2013-07-16 | 2013-10-09 | 沈阳时尚实业有限公司 | Hot plugging device of GPRS module of three-phase multi-functional table |
| CN103344804B (en) * | 2013-07-16 | 2016-06-22 | 沈阳时尚实业有限公司 | A kind of can the three-phase multi-functional table of warm swap GPRS module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120718 Termination date: 20131209 |