CN202614844U - Single phase electronic type electric energy meter based on DDS (digital display scope) processor - Google Patents
Single phase electronic type electric energy meter based on DDS (digital display scope) processor Download PDFInfo
- Publication number
- CN202614844U CN202614844U CN 201220343929 CN201220343929U CN202614844U CN 202614844 U CN202614844 U CN 202614844U CN 201220343929 CN201220343929 CN 201220343929 CN 201220343929 U CN201220343929 U CN 201220343929U CN 202614844 U CN202614844 U CN 202614844U
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- electric energy
- circuit
- dds
- energy meter
- meter
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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 - Fee Related
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Abstract
The utility model provides a single phase electronic type electric energy meter based on a DDS (digital display scope) processor. The electric energy meter comprises a DDS control unit, an electric energy collection unit, an infrared communication circuit, an RS (remote sensing) 485 communication circuit, a liquid crystal display circuit and a data storage unit, wherein the DDS control unit is in electrical signal connection with the electric energy collection unit, the infrared communication circuit, the RS 485 communication circuit, the liquid crystal display circuit, and the data storage unit respectively; the electric energy collection unit comprises a voltage sampling circuit, a current sampling circuit, a filter processing circuit, and an electric energy measuring chip; the voltage sampling circuit and the current sampling circuit are respectively in electrical signal connection with the filter processing circuit; and the filter processing circuit is in electrical signal connection with the electric energy measuring chip. The single phase electronic type electric energy meter has the electric energy measuring and storage function, and can carry out information interaction in real time, thus solving the problem of reading meter by man power, and displaying the meter reading directly, intuitively and understandably.
Description
Technical field
The utility model relates to a kind of single-phase electronic energy meter based on the DDS processor.
Background technology
Because now the rural area major part all is the register electric energy meter, perhaps the electric energy meter of mechanical type is not with any communication function, fully need the person of checking meter people for checking meter.And this kind of table is to have liquid crystal display, and is more directly understandable aspect demonstration.Removing this has also increased infrared and the RS-485 communication function, and having remedied the people is the defective of checking meter.
Summary of the invention
The purpose of the utility model is to solve above weak point, and a kind of high performance electric energy metrical function that has is provided, and can carry out the single-phase electronic energy meter of information interaction in real time.
Technology that the utility model adopted is as follows:
A kind of single-phase electronic energy meter based on the DDS processor; Comprise DDS control module, electric energy acquisition unit, infrared communication circuit, RS485 telecommunication circuit, liquid crystal display circuit and data storage cell, the DDS control module is connected with electric energy acquisition unit, infrared communication circuit, RS485 telecommunication circuit, liquid crystal display circuit, data storage cell electric signal respectively; Described electric energy acquisition unit comprises voltage sampling circuit, current sampling circuit, Filtering Processing circuit and electric energy computation chip; Voltage sampling circuit, current sampling circuit are connected with Filtering Processing circuit electric signal respectively; The Filtering Processing circuit is connected with the electric energy computation chip electric signal, and described DDS control module adopts the PIC16F1937 chip.
The utlity model has the electric energy metrical memory function, can carry out information interaction in real time, solved the problem of manual metering, show more directly considerable, understandable.
Description of drawings
This single-phase electronic energy meter of Fig. 1 structured flowchart;
The wiring diagram of this single-phase electronic energy meter of Fig. 2.
Embodiment
Further specify according to Figure of description
As shown in Figure 1; Single-phase electronic energy meter based on the DDS processor; Comprise DDS control module 1, electric energy acquisition unit 4, infrared communication circuit 2, RS485 telecommunication circuit 3, liquid crystal display circuit 6 and data storage cell 5, the DDS control module divides 1 not to be connected with electric energy acquisition unit 4, infrared communication circuit 2, RS485 telecommunication circuit 3, liquid crystal display circuit 6, data storage cell 5 electric signal; Described electric energy acquisition unit 4 comprises voltage sampling circuit, current sampling circuit, Filtering Processing circuit and electric energy computation chip; Voltage sampling circuit, current sampling circuit are connected with Filtering Processing circuit electric signal respectively, and the Filtering Processing circuit is connected with the electric energy computation chip electric signal.Described DDS control module 1 adopts the PIC16F1937 chip.This electric energy meter is gathered resident's electricity consumption through electric energy chip, and gives DDS microprocessor pulse signal, DDS microprocessor pulse signals stack metering user power consumption, and memory circuit gives data storage.This electric energy meter also has an energy pulse output function.In view of the general used electric energy meter of rural subscribers is the electric energy meter of communication function, this kind of table has specially increased infrared communication, is convenient to be no more than the interior palm machine of 5 meters scopes and carries out copy reading.RS485 has then realized the function of remote meter reading, and the department for the manual metering area is better managed with convenient.
As shown in Figure 2, electric industry department receives electric energy meter incoming end 9 to the 220V power supply, and the terminals 10 of house lead in make the user obtain voltage and normally make electrical appliance.In order to guarantee that electrical energy meter accuracy is qualified, metrological service is detected in the test side 7 of electric energy meter.In order to reach the function of remote meter reading, 8 mouthfuls of RS485 interface end to accomplish meter-reading function.
This electric energy meter can be power department advanced, reliable metering outfit is provided.Technical feature meets GB/T17215.321-2008 " alternating current measuring equipment specific (special) requirements the 21st part: state type active electric energy meter (1 grade and 2 grades) ", possesses the infrared and RS-485 communication function in optional this locality, and communication protocol meets DL/T645-2007 " multifunctional electric energy meter communication protocol ".
Claims (1)
1. based on the single-phase electronic energy meter of DDS processor; Comprise DDS control module, electric energy acquisition unit, infrared communication circuit, RS485 telecommunication circuit, liquid crystal display circuit and data storage cell, it is characterized in that: the DDS control module is connected with electric energy acquisition unit, infrared communication circuit, RS485 telecommunication circuit, liquid crystal display circuit, data storage cell electric signal respectively; Described electric energy acquisition unit comprises voltage sampling circuit, current sampling circuit, Filtering Processing circuit and electric energy computation chip; Voltage sampling circuit, current sampling circuit are connected with Filtering Processing circuit electric signal respectively; The Filtering Processing circuit is connected with the electric energy computation chip electric signal, and described DDS control module adopts the PIC16F1937 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343929 CN202614844U (en) | 2012-07-08 | 2012-07-08 | Single phase electronic type electric energy meter based on DDS (digital display scope) processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220343929 CN202614844U (en) | 2012-07-08 | 2012-07-08 | Single phase electronic type electric energy meter based on DDS (digital display scope) processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202614844U true CN202614844U (en) | 2012-12-19 |
Family
ID=47348533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220343929 Expired - Fee Related CN202614844U (en) | 2012-07-08 | 2012-07-08 | Single phase electronic type electric energy meter based on DDS (digital display scope) processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202614844U (en) |
-
2012
- 2012-07-08 CN CN 201220343929 patent/CN202614844U/en not_active Expired - Fee Related
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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: 20121219 Termination date: 20130708 |