CN201273922Y - Three phase electronic multifunctional carrier electric energy meter - Google Patents
Three phase electronic multifunctional carrier electric energy meter Download PDFInfo
- Publication number
- CN201273922Y CN201273922Y CNU200820136352XU CN200820136352U CN201273922Y CN 201273922 Y CN201273922 Y CN 201273922Y CN U200820136352X U CNU200820136352X U CN U200820136352XU CN 200820136352 U CN200820136352 U CN 200820136352U CN 201273922 Y CN201273922 Y CN 201273922Y
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Abstract
The utility model provides a three-phase electronic multifunctional carrier watt-hour meter, relates to a watt-hour meter. A digital signal processor DSP is separately connected with the data port and the control port of an ARM core microcontroller through a data bus and a control bus. A flash memory FLASH or a ferroelectric memory FRAM is connected with the ARM core microcontroller through the data bus. The output port of the ARM core microcontroller is connected with an LCD display module through the data bus. After the three phases of A, B and C pass through the filter, and the current signal and the voltage signal of each phase are separately accessed into the input port of a digital signal processor through a high speed A/D module. The ARM core microcontroller is an ARM core microcontroller using STM 32 CORTEX-M3 technology. The utility model uses digital signal processor DSP to collect and process data. The data collection calculation can reach to the measuring accuracy requirement of 0.2s watt-hour meter. The three-phase electronic multifunctional carrier watt-hour meter has excellent electromagnetic compatibility. The accuracy and the stability of the signal accessing into the collection part can be ensured from the hardware.
Description
Technical field
The utility model relates to electric energy meter, the multi-functional carrier electric energy meter of a kind of specifically three-phase electronic.
Background technology
Existing electric energy meter mostly uses Soc (System on Chip) computation chip to finish data collection task, and is not good enough on the reliability of the dirigibility of data acquisition, precision.One of existing solution is to adopt to finish data collection task based on application-specific integrated circuit chip ATT7022B, the inner collecting part of ATT7022B has adopted digital filtering technique, have advantages such as fast operation, but its algorithm is cured among the IC in this scheme, can't change, when carrying out high-precision measuring, its stability, dirigibility are good inadequately.
The utility model content
At the defective that exists in the prior art, the purpose of this utility model is to provide a kind of three-phase electronic multi-functional carrier electric energy meter, adopt digital signal processing DSP (Digital SignalProcessing) software algorithm to carry out the collection and the processing of data, the data acquisition algorithm can reach the measuring accuracy requirement of 0.2s electric energy meter, have good Electromagnetic Compatibility, guarantee precision and stability after signal enters acquisition module from hardware.
For reaching above purpose, the technical scheme that the utility model is taked is:
The multi-functional carrier electric energy meter of a kind of three-phase electronic, it is characterized in that: digital signal processor DSP passes through data bus, control bus is examined the FPDP of microcontroller respectively with ARM, control port connects, flash memory FLASH or ferroelectric memory FRAM are connected with ARM nuclear microcontroller by data bus, the output port of ARM nuclear microcontroller is connected with the LCD display module by data bus, A, B, the C three-phase is through after the filtering, the current signal of each phase, voltage signal is respectively by the input port of a high-speed a/d module incoming digital signal processor, and the ARM that said ARM nuclear microcontroller is a STM32 CORTEX-M3 technology examines microcontroller.
On the basis of technique scheme, the model of said digital signal processor DSP is TMS320F2812, and the model of said ARM nuclear microcontroller is STM32F103VB.
On the basis of technique scheme, the high-speed a/d module is connected with FPDP, the control port of digital signal processor DSP respectively by data bus, control bus.
On the basis of technique scheme, the power interface of LCD display module, ARM nuclear microcontroller, digital signal processor and high-speed a/d module is connected with the corresponding power supply interface of power module respectively.
On the basis of technique scheme, also be provided with one and the adaptive standby power supply module of power module.
The multi-functional carrier electric energy meter of three-phase electronic described in the utility model, adopt digital signal processing DSP (Digital Signal Processing) software algorithm to carry out the collection and the processing of data, the data acquisition algorithm can reach the measuring accuracy requirement of 0.2s electric energy meter, have good Electromagnetic Compatibility, guarantee precision and stability after signal enters acquisition module from hardware.Said software algorithm comprises the collection and the Processing Algorithm of several data such as software filtering algorithm.
Description of drawings
The utility model has following accompanying drawing:
The master control of the multi-functional carrier electric energy meter of Fig. 1 three-phase electronic and collecting part system chart
The mutual inductance of Fig. 2 electric current and voltage inserts the annexation synoptic diagram
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the master control and the collecting part system chart of the multi-functional carrier electric energy meter of three-phase electronic described in the utility model, digital signal processor DSP passes through data bus, control bus is examined the FPDP of microcontroller respectively with ARM, control port connects, flash memory FLASH or ferroelectric memory FRAM are connected with ARM nuclear microcontroller by data bus, the output port of ARM nuclear microcontroller is connected with the LCD display module by data bus, A, B, the C three-phase is through after the filtering, the current signal of each phase, voltage signal is respectively by the input port of a high-speed a/d module incoming digital signal processor, and the ARM that said ARM nuclear microcontroller is the STM32CORTEX-M3 technology examines microcontroller.Each is provided with two high-speed a/d modules mutually respectively and is used for sampled voltage signal, current signal, is provided with six high-speed a/d modules altogether.On the basis of technique scheme, the model of said digital signal processor DSP is TMS320F2812, and the model of said ARM nuclear microcontroller is STM32F103VB.For example, as shown in Figure 2, all signals all insert by mutual inductor, the voltage of mutual inductor output, electric current is realized synchronous A/D sampling by the high-speed a/d module, the data that the A/D sampling obtains pass to digital signal processor TMS320F2812 by the parallel port again, digital signal processor TMS320F2812 carries out digitized processing to the signal that sampling obtains, filtering interfering, calculate energy data and other relevant data, STM32F103VB reads for ARM nuclear microcontroller, ARM nuclear microcontroller STM32F103VB is according to the demand of task, send corresponding order, reading of data or parameter is set, and with the data of accumulative total or parameter according to corresponding requirement, store corresponding flash memory FLASH or ferroelectric memory FRAM the inside into.Owing to used ARM nuclear microcontroller STM32F103VB and digital signal processor TMS320F2812; therefore can be according to the practical application needs; come Adjustment System software by programming; thereby system is carried out maximum protection; can not produce unallowed error with the metering that guarantees energy data, fully guarantee the accuracy of metering because of power down or other interference and uncertain factor.
On the basis of technique scheme, the high-speed a/d module is connected with FPDP, the control port of digital signal processor DSP respectively by data bus, control bus.
On the basis of technique scheme, the power interface of LCD display module, ARM nuclear microcontroller, digital signal processor and high-speed a/d module is connected with the corresponding power supply interface of power module respectively.
On the basis of technique scheme, also be provided with one and the adaptive standby power supply module of power module.When power module can not provide electric power, standby power supply module was taken over power module automatically electric power is provided.
The utility model adopts high-speed synchronous collection of simulant signal+DSP+ARM scheme, carry out advanced Digital Signal Processing after the signals collecting, the benefit of doing like this is that the collection and the metering of energy data all has very big dirigibility, and guaranteed the precision of metering, can be by software upgrading, to adapt in the future better sampling algorithm, obtain better precision and more data.And, its the corresponding measuring accuracy of 0.2s level electric energy meter, dirigibility, function and the stability that adopt technique scheme are than the table meter with the application-specific integrated circuit design, be greatly improved, processing to unexpected abnormality on the software is more flexible, all these is that application-specific integrated circuit institute is inaccessiable, and has fully improved the anti-interference in the metering process.Harsh requirements such as the technical solution of the utility model can satisfy the demand of the overwhelming majority, is requiring high place can also adopt the scheme of DSP+ARM+FPGA, but this scheme cost, and power consumption is big, and the construction cycle is long relatively.
Claims (5)
1. multi-functional carrier electric energy meter of three-phase electronic, it is characterized in that: digital signal processor DSP passes through data bus, control bus is examined the FPDP of microcontroller respectively with ARM, control port connects, flash memory FLASH or ferroelectric memory FRAM are connected with ARM nuclear microcontroller by data bus, the output port of ARM nuclear microcontroller is connected with the LCD display module by data bus, A, B, the C three-phase is through after the filtering, the current signal of each phase, voltage signal is respectively by the input port of a high-speed a/d module incoming digital signal processor, and the ARM that said ARM nuclear microcontroller is a STM32 CORTEX-M3 technology examines microcontroller.
2. the multi-functional carrier electric energy meter of three-phase electronic as claimed in claim 1 is characterized in that: the model of said digital signal processor DSP is TMS320F2812, and the model of said ARM nuclear microcontroller is STM32F103VB.
3. the multi-functional carrier electric energy meter of three-phase electronic as claimed in claim 1 is characterized in that: the high-speed a/d module is connected with FPDP, the control port of digital signal processor DSP respectively by data bus, control bus.
4. as claim 1 or the multi-functional carrier electric energy meter of 2 or 3 described three-phase electronics, it is characterized in that: the power interface of LCD display module, ARM nuclear microcontroller, digital signal processor and high-speed a/d module is connected with the corresponding power supply interface of power module respectively.
5. the multi-functional carrier electric energy meter of three-phase electronic as claimed in claim 4 is characterized in that: also be provided with one and the adaptive standby power supply module of power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820136352XU CN201273922Y (en) | 2008-09-23 | 2008-09-23 | Three phase electronic multifunctional carrier electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820136352XU CN201273922Y (en) | 2008-09-23 | 2008-09-23 | Three phase electronic multifunctional carrier electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273922Y true CN201273922Y (en) | 2009-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820136352XU Expired - Fee Related CN201273922Y (en) | 2008-09-23 | 2008-09-23 | Three phase electronic multifunctional carrier electric energy meter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353929A (en) * | 2011-10-10 | 2012-02-15 | 青岛乾程电子科技有限公司 | Protection cabinet device for electric meter detection |
| CN102735920A (en) * | 2011-04-11 | 2012-10-17 | 襄樊金顿电气有限公司 | Multi-phase power parameter synchronous acquisition circuit |
| CN103454490A (en) * | 2012-05-28 | 2013-12-18 | 湖南省电力公司科学研究院 | Intelligent metering system and intelligent metering method on basis of Blackman-harris window spectrum correction |
| CN104062495A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Touch type electric energy data test recorder |
-
2008
- 2008-09-23 CN CNU200820136352XU patent/CN201273922Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735920A (en) * | 2011-04-11 | 2012-10-17 | 襄樊金顿电气有限公司 | Multi-phase power parameter synchronous acquisition circuit |
| CN102353929A (en) * | 2011-10-10 | 2012-02-15 | 青岛乾程电子科技有限公司 | Protection cabinet device for electric meter detection |
| CN103454490A (en) * | 2012-05-28 | 2013-12-18 | 湖南省电力公司科学研究院 | Intelligent metering system and intelligent metering method on basis of Blackman-harris window spectrum correction |
| CN104062495A (en) * | 2014-07-03 | 2014-09-24 | 国家电网公司 | Touch type electric energy data test recorder |
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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: 20090715 Termination date: 20120923 |