CN217689160U - Three-phase alternating current metering module with original waveform output - Google Patents
Three-phase alternating current metering module with original waveform output Download PDFInfo
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- CN217689160U CN217689160U CN202122813230.8U CN202122813230U CN217689160U CN 217689160 U CN217689160 U CN 217689160U CN 202122813230 U CN202122813230 U CN 202122813230U CN 217689160 U CN217689160 U CN 217689160U
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Abstract
A three-phase alternating current metering module with original waveform output comprises a metering chip and a memory; the metering chip comprises voltage and current sampling ports which are respectively connected with the three-phase current sampling signals and the three-phase voltage sampling signals; the metering chip comprises at least 1 external communication port through I 2 The C bus is connected with the memory. The metering module supports high-precision electric energy metering, has high-precision original waveform sampling and outputting functions, and can be used for deep power load analysis.
Description
Technical Field
The utility model relates to a power consumption information acquisition technical field, concretely relates to take three-phase of original waveform output to exchange metering module.
Background
With the rapid development of power technology, people have higher and higher requirements for the quality of electric energy, and various departments such as electric power, environmental protection and the like pay more and more attention to the load conditions of users. At present, one of core problems to be solved urgently in development of the smart power grid is how to accurately acquire power consumption data of a user so as to complete new services of finely analyzing power consumption load components, enriching and expanding energy consumption optimization, assisting government supervision and the like.
For analyzing the field load condition, equipment is needed to collect the field original waveform and output the field original waveform to the upper-level analysis equipment, which is not completed by the traditional electric energy metering equipment. Devices with raw waveform acquisition often do not have the capability of power metering. The utility model discloses to above-mentioned problem, give further improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take three-phase alternating-current metering module of original waveform output, it supports high accuracy electric energy measurement, possesses the original waveform sampling of high accuracy and output function simultaneously, and original waveform can be used to deep power load analysis.
In order to achieve the above object, the utility model provides a three-phase alternating current metering module with original waveform output, which comprises a metering chip and a memory;
the metering chip comprises voltage and current sampling ports which are respectively connected with the three-phase current sampling signal and the three-phase voltage sampling signal;
the metering chip comprises at least 1 external communication port, through I 2 The C bus is connected with the memory.
Furthermore, the metering chip also comprises two external communication ports which are a data transmission serial port and an SPI bus respectively;
the metering chip is connected with the primary master control chip through a data transmission serial port;
and the metering chip outputs original waveform data outwards through the SPI bus.
Furthermore, the metering chip outputs original waveform data to the special load identification module through the SPI bus.
Furthermore, the type of the metering chip is RN7326, which is a three-phase metering SOC integrated with the metering chip and the MCU.
Furthermore, the original waveform sampling frequency of the metering chip is 6.4kHz, and the sampling precision is 24 bits.
To sum up, the utility model provides a three-phase alternating current metering module with original waveform output, which comprises a metering chip and a memory; the metering chip comprises voltage and current sampling ports which are respectively connected with the three-phase current sampling signal and the three-phase voltage sampling signal; the metering chip comprises at least 1 external communication port through I 2 The C bus is connected with the memory. The metering module supports high-precision electric energy metering, has high-precision original waveform sampling and outputting functions, and can be used for deep power load analysis. The beneficial effects of the utility model are that:
1. the utility model provides an integrated SOC metering module.
2. The utility model provides a measurement and storage of voltage, electric current, power and electric energy can be accomplished to the metering module.
3. The utility model provides a take metering module of original waveform output.
Drawings
Fig. 1 is a schematic diagram of the electrical principle structure of the present invention.
Fig. 2 is a block diagram of an application case of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in figure 1, the three-phase AC metering module with original waveform output comprises a metering chip 1, wherein the metering chip 1 passes through I 2 The C bus 7 is connected with the EEPROM memory 2, the metering chip 1 is connected with the three-phase current sampling signal 3 and the three-phase voltage sampling signal 4, and the metering chip 1 also comprises another two external communication ports, namely a data transmission serial port 5 and an SPI bus 6.
The three-phase current sampling signal 3 comprises an A-phase current sampling signal, a B-phase current sampling signal and a C-phase current sampling signal, and the three-phase voltage sampling signal 4 comprises an A-phase voltage sampling signal, a B-phase voltage sampling signal and a C-phase voltage sampling signal.
The metering chip can be connected with the upper level main control chip-management core through a serial port, and original waveform data is output outwards through an SPI bus; through I 2 The C bus is connected with the EEPROM memory.
The utility model discloses use three phase current sampled signal and three phase voltage sampled signal to insert the measurement chip, wherein the chip model of measurement chip is RN7326. The metering chip obtains voltage, current, phase and power data by AD conversion, filtering, integration and accumulation of input current and voltage sampling signals, calculates electric energy data and further generates frozen data according to configuration. The metering chip stores the electric energy and the frozen data into the EEPROM memory.
Furthermore, the metering chip is of a model number RN7326, is a three-phase metering SOC and integrates the metering chip and the MCU;
furthermore, the metering chip has complete metering and management functions and can independently complete the AD conversion, the electric energy metering and the data storage functions of the sampling signals;
further, the metering chip stores voltage, current, power, electrical energy, and freeze data in the EEPROM memory;
furthermore, the metering chip can be connected with the management chip through a serial port and is used for reading data such as current, power, electric energy and the like of the metering chip by the management chip;
furthermore, the metering chip outputs original waveform data outwards through the SPI bus, and the metering chip can be a management chip or a special load identification module as a data receiving party;
furthermore, the sampling frequency of the original waveform of the metering chip reaches 6.4kHz, the sampling precision is 24bit, and the electric energy metering error is less than 0.1%.
As shown in FIG. 2 is an application case of the utility model, it includes a three-phase AC metering module 8 of taking original waveform output, metering module 8 passes through data transmission serial ports 5 and is connected with management core 9, and metering module 8 passes through SPI bus 6 and is connected with special load identification module 10.
In this application case, the management core reads data such as voltage, current, power, electric energy and the like in the metering module through the data transmission serial port, and meanwhile, parameter configuration can be carried out on the metering module through the data transmission serial port. The metering module sends the original waveform data to the special load identification module through the SPI bus, and the special load identification module analyzes the type, start and stop and other information of the electric equipment of a user through the original waveform data.
The utility model discloses a three phase current, three phase voltage sampling technique that the patent application relates to are regarded as prior art, and these technical features's concrete structure, theory of operation, spatial arrangement mode adopt the field conventional selection can, should not be regarded as the utility model discloses an invention point place, the utility model discloses a do not do further specifically expand the detailing.
The utility model discloses the function of electric energy measurement, data storage and original waveform output has integrateed, can be such as specially change and go on using on the terminal, transform it into the equipment that supports the load and discern. And simultaneously the utility model discloses use special measurement SOC, be in the same place measurement chip and MCU integration, effectively reduced measurement circuit printed board cloth area and management core operand.
To sum up, the utility model provides a three-phase alternating current metering module with original waveform output, which comprises a metering chip and a memory; the metering chip comprises voltage and current sampling ports which are respectively connected with the three-phase current sampling signal and the three-phase voltage sampling signal; the metering chip comprises at least 1 external communication port, through I 2 The C bus is connected with the memory. The metering module supports high-precision electric energy metering, has high-precision original waveform sampling and outputting functions, and can be used for deep power load analysis. The utility model has the advantages that:
1. the utility model provides an integrated SOC metering module.
2. The utility model provides a measurement and storage of voltage, electric current, power and electric energy can be accomplished to the metering module.
3. The utility model provides a take metering module of original waveform output.
It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (3)
1. A three-phase AC metering module with original waveform output is characterized by comprising a metering chip and a memory;
the metering chip comprises voltage and current sampling ports which are respectively connected with the three-phase current sampling signal and the three-phase voltage sampling signal;
the metering chip comprises at least 1 external communication port, through I 2 The C bus is connected with the memory;
the metering chip also comprises two external communication ports which are a data transmission serial port and an SPI bus respectively;
the metering chip is connected with the primary master control chip through a data transmission serial port;
the metering chip outputs original waveform data outwards through an SPI bus;
and the metering chip outputs original waveform data to the special load identification module through the SPI bus.
2. The three-phase alternating current metering module with the original waveform output as claimed in claim 1, wherein the metering chip is a three-phase metering SOC with the model number of RN7326, and is integrated with the metering chip and the MCU.
3. The three-phase alternating current metering module with the original waveform output according to any one of claims 1-2, wherein the original waveform sampling frequency of the metering chip is 6.4kHz, and the sampling precision is 24 bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122813230.8U CN217689160U (en) | 2021-11-17 | 2021-11-17 | Three-phase alternating current metering module with original waveform output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122813230.8U CN217689160U (en) | 2021-11-17 | 2021-11-17 | Three-phase alternating current metering module with original waveform output |
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| Publication Number | Publication Date |
|---|---|
| CN217689160U true CN217689160U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122813230.8U Active CN217689160U (en) | 2021-11-17 | 2021-11-17 | Three-phase alternating current metering module with original waveform output |
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| Country | Link |
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| CN (1) | CN217689160U (en) |
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2021
- 2021-11-17 CN CN202122813230.8U patent/CN217689160U/en active Active
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