CN110133338B - Double-core electric energy meter and display method - Google Patents
Double-core electric energy meter and display method Download PDFInfo
- Publication number
- CN110133338B CN110133338B CN201910409908.0A CN201910409908A CN110133338B CN 110133338 B CN110133338 B CN 110133338B CN 201910409908 A CN201910409908 A CN 201910409908A CN 110133338 B CN110133338 B CN 110133338B
- Authority
- CN
- China
- Prior art keywords
- display
- core
- metering
- video memory
- management
- Prior art date
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000015654 memory Effects 0.000 claims abstract description 119
- 238000004891 communication Methods 0.000 claims abstract description 30
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012795 verification Methods 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G01R11/16—Adaptations of counters to electricity meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention discloses a double-core electric energy meter, which belongs to the technical field of electric energy meters and comprises a metering module and a management module, wherein the management module is connected to the metering module through an SPI (serial peripheral interface) communication interface; the metering module comprises a metering core, a display and a display key, and the management module comprises a management core; the metering core is internally provided with a video memory for caching all video memory frames output to the display; the metering core is connected to the display through the video memory, and the video memory consists of a plurality of metering video memory frames and a plurality of management video memory frames; and the display key is connected to the display pin of the metering core and used for switching the current video memory frame of the video memory. The electric energy meter and the display method thereof do not change a server-client communication model of the double-core electric energy meter, realize flexible display of management module data in the metering module, and solve the problem that the management module is not installed and cannot meet the requirement of the verification regulation.
Description
Technical Field
The invention relates to the technical field of electric energy meters, in particular to a double-core electric energy meter and a display method.
Background
JJG596 is the regulation for the State administration of quality and supervision to test electric energy meters according to the national standard. The method comprises the following 7 verification items: appearance inspection, alternating voltage test, shunt running test, starting test, basic error, instrument constant test and clock day timing error. The existing scheme can not meet the requirements of the verification regulations when a management module is lacked. The method comprises the following specific steps:
in the regulation, the 'appearance inspection' project needs to inspect the electric quantity display, and no display is realized after the management module is removed, so that the regulation requirement is not met;
the instrument constant test in the regulation also needs to read display data for recording the electric energy values at the starting time and the ending time of the verification project. After the management module is removed, no display is carried out, and the requirements of regulations are not met; the existing design can only read the electric energy data through a metering RS485 communication port, and the modification of the verification regulation and the use of communication for reading the electric energy are not feasible, because the communication protocols of the electric energy meter are various and are evolved all the time, the verification regulation can not determine the specific communication protocol.
In the 'clock day timing error' test in the regulation, the existing scheme is that a management core sends a command to a metering core, and the test can be carried out only after the 'multifunctional port output' is switched to second signal output. The 'clock day timing error' cannot be verified after the management module is removed.
The existing scheme does not design the display in the metering core, and the main technical difficulty is that the related data of the management core cannot be displayed after the display is designed in the metering core. Although the "multi-function port output" function is easily designed to the metering core, it is meaningless to design the "multi-function port output" function to the metering core since the display cannot be designed to the metering core.
The measurement core and the management core have a lot of data to be displayed, and a server-client communication model between the double cores determines that only the management core actively takes data from the measurement core and displays the data in the management core. The measurement core can not actively take data to the management core and display the data in the measurement core. In the meter reading system, data is requested from the metering core through the management core, so that the roles of a server and a client cannot be interchanged. In addition, the firmware of the management core needs to be upgraded frequently, and the data of the newly added display and the final display bitmap data of the management core are unpredictable for the metering core. When the management core is upgraded, the metering core needs to be upgraded at the same time, and the accurate display can be realized. But the metering core program is not scalable as required by IR 46.
In the existing scheme, in order to keep the display data and the metering core synchronous real-time performance, a management core needs to inquire the metering core data in real time. The real-time query mode occupies too much management core resources and SPI communication bandwidth. The efficiency of the management core in acquiring other data of the metering core and the efficiency of the management core itself are reduced.
Disclosure of Invention
In view of the above defects in the prior art, the present invention provides a two-core electric energy meter, which realizes flexible display of management module data in a metering module; the electric energy meter without the management module can correctly measure and display the electric quantity; after the electric energy meter management core program of the installation management module is upgraded, even if the management display data is changed, the metering core program does not need to be upgraded. The problem that the requirement of verification regulations cannot be met without installing a management module is solved. Meanwhile, the problem that when the display needs to be changed, the metering core program needs to be upgraded at the same time when the management core program is upgraded, and the requirement that the IR46 metering core program cannot be upgraded is solved.
The first embodiment of the invention provides a double-core electric energy meter, which comprises a metering module and a management module, wherein the metering module is connected to the management module through an SPI communication interface;
the metering module comprises a metering core, a display and a display key, and the management module comprises a management core;
the metering core is internally provided with a video memory for caching all video memory frames output to the display;
the metering core is connected to the display through the display memory;
the video memory consists of a plurality of metering video memory frames and a plurality of management video memory frames;
the metering video memory frame is used for caching each frame bitmap of internal data of the metering core;
the management video memory frame is used for caching each frame bitmap of data transmitted by the management core;
and the display key is connected to the display pin of the metering core and used for switching the current video memory frame of the video memory.
Optionally, the number of the metering video memory frames in the video memory is fixed, and the total number of the metering video memory frames corresponds to the requirement of the maximum number of the display screens.
Optionally, the video memory frames in the video memory are provided with numbers.
A second embodiment of the present invention provides a display method for a two-core electric energy meter, including:
respectively distributing the video memory frames of the video memory in the metering core to the metering module and the management module;
when the management core determines that the display needs to be updated, the management core converts the data needing to be updated into a display bitmap and sends the display bitmap to the metering core through the SPI communication port;
when the metering core determines that the display needs to be updated, the metering core converts the data needing to be updated into a display bitmap and stores the display bitmap into a display memory corresponding to a metering display frame;
and the metering core detects whether a management core SPI communication writing request is received or not, and stores the display bitmap sent by the management core into a display memory corresponding to the management display frame under the condition of receiving the display bitmap sent by the management core.
Optionally, after the metering core converts the data to be updated into a display bitmap and stores the display bitmap in the display memory corresponding to the metering display memory frame, or;
and after storing the bitmap sent by the management core into the video memory corresponding to the management display frame, the method also comprises the step of marking and displaying the updating mark by the metering core when the stored video memory frame is the currently displayed video memory frame.
Optionally, the method further includes setting a round display time by the metering core, and when the round display time is reached, setting a next numbered memory frame in the memory as a current memory frame by the metering core, and displaying the update request flag in a juxtaposed manner.
Optionally, the method further includes pressing a wheel display key, setting a next numbered video memory frame in the video memory as a current video memory frame by the metering core, and juxtaposing the display update request flag.
Optionally, before sending the current frame to the display for display, the method further includes checking, by the measurement core, the display update request flag.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the communication model of the dual-core server-client is not changed, and the role of the dual-core in the communication model is also not changed, so that the flexible display of the management core data in the metering core is realized;
2. the requirement that the IR46 metering core program is not upgradable is met, and after the management core program is upgraded, the metering core is not required to be upgraded even if the display is changed.
3. Showing the same amount of data as the existing scheme, SPI bandwidth occupancy is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The drawings of the invention are illustrated as follows:
FIG. 1 is a block diagram of the electric energy meter according to the present invention;
FIG. 2 is a flow chart of a method for displaying an electric energy meter according to an embodiment of the present invention;
fig. 3 is a diagram of a video memory data structure according to an embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1, the electric energy meter with two cores of the present invention includes a metering module and a management module, wherein the metering module is connected to the management module through an SPI communication interface;
the metering module comprises a metering core, a display and a display key, and the management module comprises a management core;
the metering core is internally provided with a video memory for caching all video memory frames output to the display;
the metering core is connected to the display through the display memory;
the video memory consists of a plurality of metering video memory frames and a plurality of management video memory frames;
the metering video memory frame is used for caching each frame bitmap of internal data of the metering core;
the management video memory frame is used for caching each frame bitmap of data transmitted by the management core;
and the display key is connected to the display pin of the metering core and used for switching the current video memory frame of the video memory.
As shown in FIG. 1, the two-core meter comprises two subsystems, namely a metering core and a management core, wherein the two subsystems are connected through an SPI (serial peripheral interface). The communication is performed in a server-client model, wherein the metering core is a server and provides data reading and setting services to the management core. The management core is a client, the management core initiates a request to the metering core, the metering core responds, and the metering core cannot actively initiate the request to the management core.
The metering core system comprises a metering chip, a metering single chip microcomputer, a metering memory, a metering RS485 communication port, a clock chip, a clock battery, a super capacitor, a multifunctional output, a display key, an infrared communication port and the like.
The management core system comprises a management single chip microcomputer, a management memory, a safety chip, a management RS485 communication port and load control.
Optionally, the number of the metering video memory frames in the video memory is fixed, and the total number of the metering video memory frames corresponds to the requirement of the maximum number of the display screens.
Optionally, the video memory frames in the video memory are provided with numbers.
As shown in FIG. 2, a memory array meeting the maximum display screen number required in the future is arranged in the internal part of the metering core, the memory in the front part is fixedly distributed for data display of the metering core, and the occupied amount of the memory in the part is solidified because the program of the metering core cannot be upgraded. The rear part of the memory is allocated to the management core for use, and when the management core displays a small data screen, the tail part of the memory has empty data. The current screen serial number is that the current demonstration adopts that position pointer of showing the deposit, and when the key wheel shows or automatic timing wheel shows, current screen serial number adds 1, moves down, switches the demonstration content, and when current screen serial number reached last management core and shows the deposit, the circulation was got back to 1 st screen and is showed the deposit.
On the basis of the foregoing embodiment, in the power supply of the dual-core electric energy meter system in this embodiment, an electrically isolated transformer multi-path output winding is adopted to provide mutually isolated power supplies for the metering module and the management module, respectively, and the normal operation of the metering module is not affected by the damage of the power supply of the management module.
As shown in fig. 1, the metering module includes a voltage sampling device, a current sampling device, a metering chip, a metering core, a metering memory, a metering RS485 communication port, a clock chip, a clock battery, a super capacitor, a multifunctional output device, a display key, an infrared communication port, and the like.
The voltage sampling circuit and the current sampling circuit are connected with an AD sampling pin of the metering chip, and the metering chip samples analog quantities such as voltage, current, frequency and the like through the pin;
the metering chip is connected with the metering core through a UART, the FM33G045 metering core is adopted in the embodiment, the metering chip carries out filtering, amplification, AD conversion and digital operation on the sampling analog quantity, and then electric parameters such as voltage, current, frequency, power factor and the like and electric energy data obtained through calculation are transmitted to the metering core through the UART port.
The metering core and the metering memory are connected by an I2C bus and an SPI bus, and the metering core accumulates electric energy and stores the electric energy into the metering memory after calculation and verification.
The clock battery and the super capacitor jointly supply power to the clock chip by utilizing the unidirectional conduction characteristic of the 2 diodes, and the system power supply charges the super capacitor through the unidirectional conduction characteristic of the diodes.
When the power supply of the double-core electric energy meter system normally supplies power, the power supply of the double-core electric energy meter system charges the super capacitor, and the voltage of the super capacitor is higher than that of the battery, so that the super capacitor supplies power to the clock chip.
When power failure occurs, when the battery is electrified, the super capacitor supplies power to the clock chip through the diode in the first stage, and when the voltage of the super capacitor is equal to the voltage of the battery in the second stage, the super capacitor and the battery supply power to the clock chip together.
When the power is cut off during transmission and the battery is not charged, the power is supplied by the super capacitor in the first stage and the second stage, and the clock can be maintained for more than 2 days.
The metering core is connected with the clock chip through an I2C bus, and the metering core reads the clock data of the clock chip through an I2C bus.
The metering core is connected with the display through an I2C bus, converts data needing to be displayed, such as electric parameters, electric energy, clocks and the like, into bitmaps, stores the bitmaps as display memory frames into corresponding display memories, and sends the display memory data to the display through an I2C bus for displaying.
The display key is connected to the input pin of the metering core, and the metering core detects the falling edge of the input pin caused by the key to switch the frame number of the video memory and refresh the display.
The infrared communication port is connected to the management core through a UART;
the multifunctional output port is connected with the rear part through a multifunctional open-drain output port of the metering core and a second signal open-drain output port of the clock chip;
the management core is connected with the metering core through an SPI bus, the management core in the embodiment adopts an FM33A048 management core, and the management core reads data such as electric parameters, electric energy, clocks and the like generated by the metering core through the SPI bus. And simultaneously, the data display bitmap required to be displayed by the management core is sent to the metering core through the SPI bus.
The management core system comprises a management core, a management memory, a security chip, a management RS485 communication port, a load control module, an uplink module, a downlink module and a Bluetooth module.
The management memory is connected with the management core through an I2C bus and an SPI bus;
the security chip is connected with the management core through an ISO7816 port; the management RS485 communication port is isolated by an optical coupler and then connected with the management core through a UART;
the load control is connected to the management core through two pins of switching-off and switching-on;
the uplink module, the downlink module and the Bluetooth module are respectively connected to the management core through UARTs;
the invention also aims to provide a display method of a double-core electric energy meter, which realizes flexible display of management core data in a metering core without changing a double-core server-client communication model and the role of the double-core in the communication model, and comprises the following steps:
the method comprises the following steps:
respectively distributing the video memory frames of the video memory in the metering core to the metering module and the management module;
when the management core determines that the display needs to be updated, the management core converts the data needing to be updated into a display bitmap and sends the display bitmap to the metering core through the SPI communication port;
when the metering core determines that the display needs to be updated, the metering core converts the data needing to be updated into a display bitmap and stores the display bitmap into a display memory corresponding to a metering display frame;
and the metering core detects whether a management core SPI communication writing request is received or not, and stores the display bitmap sent by the management core into a display memory corresponding to the management display frame under the condition of receiving the display bitmap sent by the management core.
Optionally, after the metering core converts the data to be updated into a display bitmap and stores the display bitmap in the display memory corresponding to the metering display memory frame, or;
and after storing the bitmap sent by the management core into the video memory corresponding to the management display frame, the method also comprises the step of marking and displaying the updating mark by the metering core when the stored video memory frame is the currently displayed video memory frame.
Optionally, the method further includes setting a round display time by the metering core, and when the round display time is reached, setting a next numbered memory frame in the memory as a current memory frame by the metering core, and displaying the update request flag in a juxtaposed manner.
Optionally, the method further includes pressing a wheel display key, setting a next numbered video memory frame in the video memory as a current video memory frame by the metering core, and juxtaposing the display update request flag.
Optionally, before sending the current frame to the display for display, the method further includes checking, by the measurement core, the display update request flag.
As shown in fig. 3, which is a flow chart of the display method of the present invention,
a management core process:
1. the client detects the display update to determine whether data needs to be sent to the metering core;
2. collecting all updated data and states of the management core after the bitmap data is sent and displayed last time;
3. converting the collected data and state into bitmap data which can be directly sent to a display;
4. sending bitmap data to a metering core;
a core metering process:
1. collecting the data and the state of the metering core which is updated after the metering video memory is updated last time;
2. and converting the collected metering core data and the collected states into bitmap data, storing the bitmap data into the metering core related memory, and marking the memory updating mark.
3. And checking whether new bitmap data of the management core is received or not, if new data exists, storing the new bitmap data into the related memory of the management core, and marking the update mark of the memory.
4. And processing and displaying the key message and the display time of the timing wheel, and switching to the next screen serial number if the display needs to be switched.
5. And checking the current video memory updating identification generated in the previous step or switching to the next screen, and then sending the corresponding video memory content to the display for displaying.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (8)
1. A double-core electric energy meter is characterized by comprising a metering module and a management module, wherein the metering module is connected to the management module through an SPI communication interface;
the metering module comprises a metering core, a display and a display key, and the management module comprises a management core;
the metering core is internally provided with a video memory for caching all video memory frames output to the display;
the metering core is connected to the display through the display memory;
the video memory consists of a plurality of metering video memory frames and a plurality of management video memory frames;
the metering video memory frame is used for caching each frame bitmap of internal data of the metering core;
the management video memory frame is used for caching each frame bitmap of data transmitted by the management core;
and the display key is connected to the display pin of the metering core and used for switching the current video memory frame of the video memory.
2. A two-core electric energy meter according to claim 1, characterized in that: the number of the metering video memory frames in the video memory is fixed, and the total number of the video memory frames in the metering video memory frames corresponds to the requirement of the maximum number of the display screens.
3. A two-core electric energy meter according to claim 2, characterized in that: and the video memory frames in the video memory are provided with numbers.
4. A display method of a double-core electric energy meter is characterized by comprising the following steps:
respectively distributing the video memory frames of the video memory in the metering core to the metering module and the management module;
when the management core determines that the display needs to be updated, the management core converts the data needing to be updated into a display bitmap and sends the display bitmap to the metering core through the SPI communication port;
when the metering core determines that the display needs to be updated, the metering core converts the data needing to be updated into a display bitmap and stores the display bitmap into a display memory corresponding to a metering display frame;
and the metering core detects whether a management core SPI communication writing request is received or not, and stores the display bitmap sent by the management core into a display memory corresponding to the management display frame under the condition of receiving the display bitmap sent by the management core.
5. The display method of the two-core electric energy meter according to claim 4, characterized in that after the metering core converts the data to be updated into the display bitmap and stores the display bitmap in the corresponding display memory of the metering display memory frame, or;
and after storing the bitmap sent by the management core into the video memory corresponding to the management display frame, the method also comprises the step of marking and displaying the updating mark by the metering core when the stored video memory frame is the currently displayed video memory frame.
6. The method as claimed in claim 5, further comprising setting a display time of the measurement core, and setting a next numbered frame in the memory as a current frame and displaying the update request flag in parallel when the display time of the measurement core is reached.
7. The method as claimed in claim 6, further comprising pressing a display button of the wheel, and setting a next numbered frame in the memory as a current frame by the metering core, and displaying the update request flag in parallel.
8. The method as claimed in claim 6 or 7, wherein before the current frame is sent to the display for display, the method further comprises the step of checking the display update request flag by the metering core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409908.0A CN110133338B (en) | 2019-05-16 | 2019-05-16 | Double-core electric energy meter and display method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409908.0A CN110133338B (en) | 2019-05-16 | 2019-05-16 | Double-core electric energy meter and display method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110133338A CN110133338A (en) | 2019-08-16 |
| CN110133338B true CN110133338B (en) | 2021-03-30 |
Family
ID=67574671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910409908.0A Active CN110133338B (en) | 2019-05-16 | 2019-05-16 | Double-core electric energy meter and display method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110133338B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305305A (en) * | 2020-02-21 | 2021-02-02 | 贵州电网有限责任公司 | Isolation processing system between two cores of modular electric energy meter |
| CN112098924B (en) * | 2020-11-04 | 2021-02-23 | 南方电网数字电网研究院有限公司 | Interactive function testing method and device based on double-core intelligent electric meter |
| CN112698068A (en) * | 2020-12-08 | 2021-04-23 | 烟台科大正信电气有限公司 | Internet of things modular electric energy meter capable of monitoring temperature of terminal block |
| CN114764959A (en) * | 2021-01-13 | 2022-07-19 | 辽宁思凯科技股份有限公司 | Double-core intelligent water meter |
| CN112858993B (en) * | 2021-02-20 | 2023-06-13 | 南方电网数字电网科技(广东)有限公司 | Double-core electric energy meter test system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062814B (en) * | 2009-11-16 | 2012-10-17 | 上海安科瑞电气股份有限公司 | ZIGBEE technology-based three-phase guide rail-type installed electric energy meter |
| KR101166329B1 (en) * | 2012-01-10 | 2012-07-18 | 송원순 | Data concentrator unit using a power line communication remote meter reading |
| CN104330619B (en) * | 2014-09-16 | 2016-01-20 | 杭州西力电能表制造有限公司 | Transformer electric energy meter and heat Balance Calculation alarm method thereof |
| CN104391173A (en) * | 2014-12-08 | 2015-03-04 | 国网宁夏电力公司固原供电公司 | Jump-out type expenditure-controlled intelligent electric energy meter system and jump-out type expenditure-controlled intelligent electric energy meter |
| CN205176133U (en) * | 2015-12-14 | 2016-04-20 | 威胜集团有限公司 | Electric energy meter based on SOC measures chip |
| CN108414830A (en) * | 2018-02-05 | 2018-08-17 | 国网江苏省电力有限公司苏州供电分公司 | Twin-core intelligent electric meter with non-invasive powerline road breakdown judge function |
| CN108761160A (en) * | 2018-08-20 | 2018-11-06 | 贵州电网有限责任公司 | A kind of electric energy meter legality measurement and non-legal system functional hardware separated structure |
| CN109739863B (en) * | 2019-01-22 | 2021-03-02 | 威胜集团有限公司 | Electric energy meter data management method |
-
2019
- 2019-05-16 CN CN201910409908.0A patent/CN110133338B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110133338A (en) | 2019-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110133338B (en) | Double-core electric energy meter and display method | |
| GB2565177A (en) | Electric energy meter, checking method therefor, and storage medium | |
| CN204102247U (en) | A kind of intellectual water meter control device based on 3G wireless communication technology | |
| CN103489387A (en) | Displayer picture switching response time test system and method | |
| US10194389B2 (en) | Data processing device, data processing method, and program for sampling rate control of sensors | |
| CN107680399A (en) | Wireless method for detecting parking stalls and parking space detector | |
| CN109862123A (en) | Data processing method, Internet of Things module and equipment | |
| CN103177565A (en) | Bus scheduling information adjusting system based on actual bus taking requests | |
| CN101726708B (en) | Battery voltage data acquisition system | |
| CN106896710A (en) | Scene configurable time synchronization test system and implementation method | |
| CN207257386U (en) | A kind of vehicle-mounted liquid crystal combination instrument | |
| CN112419698B (en) | Electric energy meter data transmission method, system and device based on distribution line message specification | |
| CN108802532A (en) | Hardware function self checking method | |
| CN210609246U (en) | Cloud thing allies oneself with intelligent stereo set control system | |
| CN209044355U (en) | A kind of composite type processing unit | |
| CN113933739A (en) | Direct current fault recording device and fault recording method | |
| CN203164618U (en) | GPS timing apparatus | |
| US20200357107A1 (en) | Automated inspection system and automated inspection method | |
| CN104749430A (en) | Circuit line loss monitoring device | |
| CN209606511U (en) | A kind of multiloop electric quantity collector with wireless communication function | |
| Wang et al. | Design of Power Monitoring System Based on Wireless Network | |
| CN215641732U (en) | Portable battery parameter testing device | |
| CN108628264A (en) | A kind of commodity refine production operation system and method on a large scale | |
| CN116582772B (en) | Electric energy data acquisition method, system, electronic equipment and medium | |
| CN216209832U (en) | Intelligent electric meter on-site operation and maintenance detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |