CN111060727A - Electric energy meter - Google Patents
Electric energy meter Download PDFInfo
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- CN111060727A CN111060727A CN202010043182.6A CN202010043182A CN111060727A CN 111060727 A CN111060727 A CN 111060727A CN 202010043182 A CN202010043182 A CN 202010043182A CN 111060727 A CN111060727 A CN 111060727A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The application provides an electric energy meter, includes: the electric energy meter comprises an electric energy meter shell, a base meter module and an external module; the base table module specifically comprises: the controller circuit, the metering module circuit and the external module interface; the first communication end of the controller circuit is in communication connection with the metering module circuit through the bus circuit; the second communication end of the controller circuit is in communication connection with the external circuit interface through a bus circuit; the controller circuit and the metering module circuit are arranged in the electric energy meter shell, and the external circuit interface is embedded on the electric energy meter shell and used for being connected with the external module. The electric energy meter provided by the application is characterized in that the meter structure is divided into the base meter module and the external module, the base meter module is used for executing the basic metering function of the electric energy meter, the rest functional modules are used as the external modules, the external module interfaces reserved on the shell are used for being connected with the base meter module, plug and play are achieved, modularization of the electric energy meter is achieved, and the technical problem that the existing electric energy meter is poor in expansibility is solved.
Description
Technical Field
The application relates to the field of electric power metering equipment, in particular to an electric energy meter.
Background
Along with the development of economy in China, the demand of residents and enterprises on electric power is increasingly improved, and meanwhile, along with the adjustment of national energy policies, the popularization and application of various new energy sources such as photovoltaic, wind power, energy storage and the like are realized, the requirements on electric energy metering and quality level are gradually improved, and the coordination and exchange between an electric power network and electric power markets and users are increasingly tight.
Along with the upgrading and upgrading speed of the power grid, services are more and more complex, and the existing electric energy meter has the technical problem of poor expansibility due to the fact that the hardware design structure is fixed, so that the ever-increasing power grid service requirements cannot be met.
Disclosure of Invention
The application provides an electric energy meter, which is used for solving the technical problem that the existing electric energy meter is poor in expansibility.
In view of the above, the present application provides an electric energy meter, comprising: the electric energy meter comprises an electric energy meter shell, a base meter module and an external module;
the base table module specifically comprises: the controller circuit, the metering module circuit and the external module interface;
the first communication end of the controller circuit is in communication connection with the metering module circuit through a bus circuit;
the second communication end of the controller circuit is in communication connection with the external circuit interface through the bus circuit;
the controller circuit and the metering module circuit are arranged in the electric energy meter shell, and the external circuit interface is embedded on the electric energy meter shell and used for being connected with the external module.
Optionally, the bus circuit specifically includes: a high-speed bus circuit and a low-speed bus circuit;
the external module interface specifically comprises: the high-speed external module interface is connected with the high-speed bus circuit, and the low-speed external module interface is connected with the low-speed bus circuit.
Optionally, the external module specifically includes: a non-intrusive load identification circuit;
and the control end of the non-invasive load identification circuit is in communication connection with the controller circuit through the low-speed external module interface.
Optionally, the external module specifically includes: a load control circuit;
and the control end of the load control circuit is in communication connection with the controller circuit through the low-speed external module interface.
Optionally, the external module specifically includes: an uplink communication module;
and the control end of the uplink communication module is in communication connection with the controller circuit through the high-speed external module interface.
Optionally, the external module specifically includes: a downlink communication module;
and the control end of the downlink communication module is in communication connection with the controller circuit through the low-speed external module interface.
Optionally, the controller circuit specifically includes: the system comprises a processor chip, a man-machine interaction management circuit, an EEPROM circuit, a FLASH circuit, an ESAM circuit, a USB communication circuit and a copy stop battery management circuit;
the control end of the man-machine interaction management circuit, the control end of the EEPROM circuit, the control end of the FLASH circuit, the control end of the ESAM circuit, the control end of the USB communication circuit and the control end of the stop-copy battery management circuit are respectively in communication connection with the processor chip.
Optionally, the controller circuit specifically includes: the device comprises a metering chip, a voltage sampling circuit, a current sampling circuit, a storage circuit, an RTC clock circuit, a standby power supply, an infrared interface circuit, a temperature measuring circuit and a photoelectric isolation circuit;
the standby power supply is used for supplying electric energy to the metering chip, the voltage sampling circuit, the current sampling circuit, the storage circuit, the RTC clock circuit, the infrared interface circuit, the temperature measuring circuit and the photoelectric isolation circuit;
the output end of the voltage sampling circuit, the output end of the current sampling circuit, the control end of the storage circuit, the signal output end of the RTC clock circuit, the control end of the infrared interface circuit, the control end of the temperature measuring circuit and the signal input end of the photoelectric isolation circuit are respectively in communication connection with the metering chip.
Optionally, the high-speed bus circuit is specifically an SPI bus circuit.
Optionally, the low-speed bus circuit is specifically an RS485 bus circuit.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides an electric energy meter, includes: the electric energy meter comprises an electric energy meter shell, a base meter module and an external module; the base table module specifically comprises: the controller circuit, the metering module circuit and the external module interface; the first communication end of the controller circuit is in communication connection with the metering module circuit through a bus circuit; the second communication end of the controller circuit is in communication connection with the external circuit interface through the bus circuit; the controller circuit and the metering module circuit are arranged in the electric energy meter shell, and the external circuit interface is embedded on the electric energy meter shell and used for being connected with the external module.
The electric energy meter provided by the application is characterized in that the meter structure is divided into the base meter module and the external module, the base meter module is used for executing the basic metering function of the electric energy meter, the rest functional modules are used as the external modules, the external module interfaces reserved on the shell are used for being connected with the base meter module, plug and play are achieved, modularization of the electric energy meter is achieved, and the technical problem that the existing electric energy meter is poor in expansibility is solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an electric energy meter provided in the present application;
fig. 2 is a schematic structural diagram of a controller circuit of an electric energy meter provided by the present application;
fig. 3 is a schematic structural diagram of a metering module circuit of an electric energy meter provided in the present application.
Detailed Description
The embodiment of the application provides an electric energy meter, which is used for solving the technical problem of poor expansibility of the existing electric energy meter.
The function and performance of the electric energy meter, which is the most important part of electric energy metering, cannot meet the increasing demands. The main function of the existing electric energy meter is to realize the charging of electric energy and provide charging standards for power companies and users, and when the power utilization environment and the user requirements change, the electric energy meter cannot meet the additional functional requirements.
The problems of the existing electric energy meter include: the expansion performance is poor, the structure is fixed, the hardware design is realized by adopting a scheme of a metering chip and a CPU, the structure is simple, and part of electric meters in models can be configured with the communication module, but a plurality of modules cannot be expanded at the same position. When new functions such as sequential charging, load identification and the like need to be added, the structure and hardware of the electric energy meter can only be changed, the electric energy meter needs to be greatly modified, and the simple, convenient and flexible extension on the basis of the original structure cannot be achieved.
In order to make the objects, features and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to fig. 3, an embodiment of the present application provides an electric energy meter, including: the electric energy meter comprises an electric energy meter shell, a base meter module and an external module;
the base table module specifically comprises: the device comprises a controller circuit 1, a metering module circuit 2 and an external module interface;
a first communication end of the controller circuit 1 is in communication connection with the metering module circuit 2 through a bus circuit 3;
the second communication end of the controller circuit 1 is in communication connection with the external circuit interface through the bus circuit 3;
the controller circuit 1 and the metering module circuit 2 are arranged in the electric energy meter shell, and the external circuit interface is embedded in the electric energy meter shell and used for being connected with the external module.
It should be noted that the controller circuit 1, the metering module circuit 2, and the bus circuit 3 provided in this embodiment are necessary parts of the smart meter, and are disposed in the electric energy meter housing, wherein the controller circuit 1 is configured to uniformly control operations of the respective module circuits of the smart meter, and includes the metering module circuit 2 and an external module connected thereto, the metering module circuit 2 is configured to perform a metering function, and the bus is configured to transmit data, which together form a base meter of the smart meter, thereby implementing a basic function of the smart meter. The rest module circuits can be used as external modules, and are connected with the controller circuit 1 through the bus circuit 3 by utilizing external module interfaces arranged on the shell of the electric energy meter, so that the electric energy meter is accessed for use, and the function expansion of the electric energy meter is realized.
More specifically, the bus circuit 3 specifically includes: a high-speed bus circuit 31 and a low-speed bus circuit 32;
the external module interface specifically comprises: a high-speed external module interface connected to the high-speed bus circuit 31, and a low-speed external module interface connected to the low-speed bus circuit 32.
More specifically, the high-speed bus circuit 31 is specifically an SPI bus circuit.
More specifically, the low-speed bus circuit 32 is specifically an RS485 bus circuit.
It should be noted that the bus circuit 3 of the present embodiment specifically includes: the high-speed bus circuit 31 and the low-speed bus circuit 32, wherein, the high-speed bus circuit 31 is the multipath SPI signal that the controller circuit 1 outputs, connect to the interface terminal needing high-speed communication, the high-speed interface of the invention outputs to the upstream communication circuit and measures the module circuit 2; the interface terminal of the metering module receives the high-speed data sent by the metering module and then sends the high-speed data to the non-intrusive load identification module; the low-speed bus is a communication signal based on serial RS485, and the terminals of all module circuits can be accessed to the signal, so that information interaction of each module is completed; in addition, the bus circuit 3 of the present embodiment may further include some auxiliary signal line circuits, such as I/O, address, interrupt, which are controlled by the controller circuit 1 and cooperate with the control of each configuration module; when the application site needs to be configured with the customized function, only an external module with the corresponding function needs to be connected with an appropriate external module interface selected from the electric energy meter shell, and the function of the external module can be realized by inserting the module with the corresponding function.
More specifically, the external module specifically includes: a non-intrusive load identification circuit 41;
the control terminal of the non-invasive load identification circuit 41 is in communication connection with the controller circuit 1 through the low-speed external module interface.
More specifically, the external module specifically includes: a load control circuit 42;
the control end of the load control circuit 42 is in communication connection with the controller circuit 1 through the low-speed external module interface.
More specifically, the external module specifically includes: an upstream communication module 43;
the control end of the uplink communication module 43 is in communication connection with the controller circuit 1 through the high-speed external module interface.
More specifically, the external module specifically includes: a downstream communication module 44;
the control end of the downlink communication module 44 is in communication connection with the controller circuit 1 through the low-speed external module interface.
More specifically, the controller circuit 1 specifically includes: the system comprises a processor chip 11, a man-machine interaction management circuit 12, an EEPROM circuit 13, a FLASH circuit 14, an ESAM circuit 15, a USB communication circuit 16 and a copy stop battery management circuit 17;
the control end of the human-computer interaction management circuit 12, the control end of the EEPROM circuit 13, the control end of the FLASH circuit 14, the control end of the ESAM circuit 15, the control end of the USB communication circuit 16, and the control end of the stop-copying battery management circuit 17 are in communication connection with the processor chip 11, respectively.
It should be noted that the human-computer interaction management circuit 12 of the present embodiment includes keys, a liquid crystal display and the like, the liquid crystal display adopts a dot matrix liquid crystal, and the keys implement data viewing; the EEPROM circuit 13 is mainly responsible for storing data such as relevant parameters of the ammeter and the like, and is communicated with the controller circuit 1 through an IIC interface; the FLASH circuit 14 is mainly used for storing a control program of the electric meter and upgrading the spare space of the program, and is communicated with the controller circuit 1 through the SPI interface; meanwhile, the controller circuit 1 communicates with an ESAM (Embedded Secure Access Module) through a 7816 interface to realize functions such as security authentication and the like; the controller circuit 1 can also be used for fast online upgrade of management programs and fast data export through the SPI extension USB interface. The controller circuit 1 also leads out a high-speed bus and a low-speed bus to an external module interface connected with the bus, so that the expansion and application of other functional modules are facilitated.
More specifically, the controller circuit 1 specifically includes: the device comprises a metering chip 21, a voltage sampling circuit 22, a current sampling circuit 23, a storage circuit, an RTC clock circuit 25, a standby power supply 29, an infrared interface circuit 26, a temperature measuring circuit 27 and a photoelectric isolation circuit 28;
the standby power supply 29 is configured to provide electric energy to the metering chip 21, the voltage sampling circuit 22, the current sampling circuit 23, the storage circuit 24, the RTC clock circuit 25, the infrared interface circuit 26, the temperature measuring circuit 27, and the optoelectronic isolation circuit 28;
the output end of the voltage sampling circuit 22, the output end of the current sampling circuit 23, the control end of the storage circuit 24, the signal output end of the RTC clock circuit 25, the control end of the infrared interface circuit 26, the control end of the temperature measuring circuit 27 and the signal input end of the photoelectric isolation circuit 28 are respectively in communication connection with the metering chip 21;
it should be noted that the metering chip 21 is a core computing unit of the metering module circuit 2, and is responsible for performing high-frequency sampling and computing processing on an input signal, and for outputting a sampling signal and a computing result; the voltage and current signal conditioning circuit amplifies, filters, matches and the like the input current and voltage small signals and outputs the signals to the metering chip 21; the storage circuit 24 is responsible for storing information such as parameters and metering results, and cannot be changed externally; the RTC circuit provides an accurate clock for the metering chip 21; the standby power supply circuit maintains the basic functions of the metering module after the external power failure of the electric energy meter; the infrared circuit realizes the output of infrared pulse and the functions of calibrating the meter and the like; the temperature measuring circuit 27 measures temperature to realize temperature detection of the terminal wiring, and prevents the terminal wiring from heating to damage and burn the ammeter due to short circuit; photoelectric isolation circuit 28 mainly realizes the isolation of signal of telecommunication, prevents that the impact of outside voltage electric current signal from to the influence of other circuits of electric energy meter, and measurement chip 21 passes through serial UART interface and SPI interface to carry out the communication through photoelectric isolation signal and control circuit, carry out the interaction of message, measurement chip 21 can send high-speed sampling data to non-invasive load identification circuit through high-speed SPI mouth.
The electric energy meter provided by the embodiment of the application is characterized in that the meter structure is divided into the base meter module and the external module, the base meter module is used for executing the basic metering function of the electric energy meter, the rest functional modules are used as the external modules, the external module interface reserved on the shell is utilized to be connected with the base meter module, different functional circuit modules can be configured through the bus circuit 3 module, the expansion is flexible, the interfaces are various, different functional modules can be selected and matched according to actual needs, the hardware of the electric energy meter does not need to be changed, the adaptability is high, different user requirements are met, and the technical problem that the existing electric energy meter is poor in expansibility is solved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. An electric energy meter, comprising: the electric energy meter comprises an electric energy meter shell, a base meter module and an external module;
the base table module specifically comprises: the controller circuit, the metering module circuit and the external module interface;
the first communication end of the controller circuit is in communication connection with the metering module circuit through a bus circuit;
the second communication end of the controller circuit is in communication connection with the external circuit interface through the bus circuit;
the controller circuit and the metering module circuit are arranged in the electric energy meter shell, and the external circuit interface is embedded on the electric energy meter shell and used for being connected with the external module.
2. The electric energy meter according to claim 1, wherein the bus circuit comprises: a high-speed bus circuit and a low-speed bus circuit;
the external module interface specifically comprises: the high-speed external module interface is connected with the high-speed bus circuit, and the low-speed external module interface is connected with the low-speed bus circuit.
3. The electric energy meter according to claim 2, wherein the external module specifically comprises: a non-intrusive load identification circuit;
and the control end of the non-invasive load identification circuit is in communication connection with the controller circuit through the low-speed external module interface.
4. The electric energy meter according to claim 2, wherein the external module specifically comprises: a load control circuit;
and the control end of the load control circuit is in communication connection with the controller circuit through the low-speed external module interface.
5. The electric energy meter according to claim 2, wherein the external module specifically comprises: an uplink communication module;
and the control end of the uplink communication module is in communication connection with the controller circuit through the high-speed external module interface.
6. The electric energy meter according to claim 2, wherein the external module specifically comprises: a downlink communication module;
and the control end of the downlink communication module is in communication connection with the controller circuit through the low-speed external module interface.
7. The electric energy meter according to claim 2, wherein the controller circuit comprises: the system comprises a processor chip, a man-machine interaction management circuit, an EEPROM circuit, a FLASH circuit, an ESAM circuit, a USB communication circuit and a copy stop battery management circuit;
the control end of the man-machine interaction management circuit, the control end of the EEPROM circuit, the control end of the FLASH circuit, the control end of the ESAM circuit, the control end of the USB communication circuit and the control end of the stop-copy battery management circuit are respectively in communication connection with the processor chip.
8. The electric energy meter according to claim 2, wherein the controller circuit comprises: the device comprises a metering chip, a voltage sampling circuit, a current sampling circuit, a storage circuit, an RTC clock circuit, a standby power supply, an infrared interface circuit, a temperature measuring circuit and a photoelectric isolation circuit;
the standby power supply is used for supplying electric energy to the metering chip, the voltage sampling circuit, the current sampling circuit, the storage circuit, the RTC clock circuit, the infrared interface circuit, the temperature measuring circuit and the photoelectric isolation circuit;
the output end of the voltage sampling circuit, the output end of the current sampling circuit, the control end of the storage circuit, the signal output end of the RTC clock circuit, the control end of the infrared interface circuit, the control end of the temperature measuring circuit and the signal input end of the photoelectric isolation circuit are respectively in communication connection with the metering chip.
9. An electric energy meter according to any one of claims 1 to 8, characterized in that the high-speed bus circuit is embodied as an SPI bus circuit.
10. An electric energy meter according to any one of claims 1 to 8, characterized in that the low-speed bus circuit is embodied as an RS485 bus circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043182.6A CN111060727A (en) | 2020-01-15 | 2020-01-15 | Electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043182.6A CN111060727A (en) | 2020-01-15 | 2020-01-15 | Electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111060727A true CN111060727A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010043182.6A Pending CN111060727A (en) | 2020-01-15 | 2020-01-15 | Electric energy meter |
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| CN (1) | CN111060727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112217795A (en) * | 2020-09-07 | 2021-01-12 | 国家电网有限公司 | Method and device for managing communication safety of intelligent electric meter |
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